Nourieh Sharifi; Mohammad Javad Yazdanpanah
Volume 2, Issue 3 , June 2007, , Pages 97-99
Abstract
Background and Objective: Cutaneous cytology is the study of scraping or smears obtained from skin lesions. Although not commonly employed, cutaneous cytology has been a useful tool for clinicians due to simplified procedures and high sensitivity and specificity of presurgical clinical diagnosis of common ...
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Background and Objective: Cutaneous cytology is the study of scraping or smears obtained from skin lesions. Although not commonly employed, cutaneous cytology has been a useful tool for clinicians due to simplified procedures and high sensitivity and specificity of presurgical clinical diagnosis of common types of skin tumors. This investigation was conducted to study usefulness of cutaneous cytology in diagnosis of basal and squamous cell carcinoma. Methods: We collected 42 skin tumors in total, clinically presumed to be either BCC (n = 31) or SCC (n = 10). Samples were taken by the scraping technique. After smearing the cells onto several glass slides, they were fixed with 96% alcohol. The specimens were stained with Papanicolaou stain. Punch biopsies were taken to confirm the clinical and cytologic impression. Results: Cytodiagnosis and histopathologic examination of 42 cases of BCC (n = 32) and SCC (n = 10) showed a significant concordance between histopathology of skin specimen and cytologic diagnosis with a sensitivity rate of 96.8% and specificity rate of 90% and with a high positive predictive value of 96.8%. Conclusion: Cytologic examination is easy to perform, saves time, and provides a rapid and reliable procedure in diagnosis and confirmation of non-melanoma malignant skin tumors (BCC and SCC).
Mahdieh Rajabi-Moghaddam; Hamid Abbaszadeh-Bidokhty; Ali Bijani
Abstract
Background & Objectives: Odontogenic cysts are among the most frequent destructive lesions of jaws which their pathogenesis and growth mechanism are not cleared. With respect to different roles of mast cells, they may play a role in the pathogenesis and growth of odontogenic cysts. The aim of present ...
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Background & Objectives: Odontogenic cysts are among the most frequent destructive lesions of jaws which their pathogenesis and growth mechanism are not cleared. With respect to different roles of mast cells, they may play a role in the pathogenesis and growth of odontogenic cysts. The aim of present study was to evaluate mast cells in the most common odontogenic cyst. Methods: Thirty paraffin-embedded tissue blocks including 10 radicular cysts, 10 dentigerous cysts and 10 odontogenic keratocysts were used and 5 micron sections stained with toluidine blue and observed by light microscope under ×400 magnification to evaluate mast cells within these cysts. For each case, 5 high-power field areas, selected from hot-spot areas, were considered and each area divided into 3 zones: intra-epithelial zone, sub-epithelial zone and deep zone. Results: Most of the studied cyst showed presence of mast cells. There was not any significant difference in mast cell count between studied cysts (P-values > 0.05).With respect to intra-epithelial, sub-epithelial and deep zones, there was not any significant difference between three studied cysts. There was not any significant difference between sub-epithelial zone and deep zone within each of these cysts. There was only significant difference between intra-epithelial zone and sub-epithelial zone within dentigerous cysts and odontogenic keratocysts (P-value < 0.05). Conclusion: Prevalence of mast cells in fibrous wall of odontogenic cysts suggests their activity in these cysts. Mast cells may not be directly involved in the pathogenesis of odontogenic keratocysts.
Afsaneh Ghasemi; Ali Davati; Saloumeh Peyvandi
Volume 1, Issue 3 , June 2006, , Pages 109-112
Abstract
Background and Objective: Cervical cancer involves many women annually and Pop smear test has played a significant role in reducing its mortality and for this reason, its improvement is very essential. In this respect, cervex brush is a new tool that has been introduced in many countries. Therefore, ...
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Background and Objective: Cervical cancer involves many women annually and Pop smear test has played a significant role in reducing its mortality and for this reason, its improvement is very essential. In this respect, cervex brush is a new tool that has been introduced in many countries. Therefore, this study was conducted to compare Pop smears from cotton swab-spatula and Cervex brush methods with regard to cell number. Materials and Methods: The clinical trial and randomized protocol of this study was conducted on 400 women as referrals of gynecology clinic of Hazrat Rassoul Akram (s) hospital and the cases with inclusion criteria were further investigated and their data using above-mentioned methods were compared. For statistical analysis, SPSS software and student’s t-test and chi-square tests were used. Results: It was found out that the mean age of cases was 34.13 ± 9.3 years. Meanwhile, there was a significant difference between the groups regarding endocervical cells (p<0.001) and bleeding on sampling (p<0.001). Conclusion: It is concluded that appropriate use of Cervex brush method can prevent the need for re-sampling regarding Pop smear test and in this way it can lower health-related costs.
Microbiology
Samira Rashidian; Roghayeh Teimourpour; Zahra Meshkat
Volume 11, Issue 2 , April 2016, , Pages 112-119
Abstract
Background: Tuberculosis (TB) remains as a major cause of death around the world. Construction of a new vaccine against tuberculosis is an effective way to control it. Several vaccines against this disease have been developed. The aim of the present study was to cloning of tb10.4 gene in pcDNA3.1+ plasmid ...
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Background: Tuberculosis (TB) remains as a major cause of death around the world. Construction of a new vaccine against tuberculosis is an effective way to control it. Several vaccines against this disease have been developed. The aim of the present study was to cloning of tb10.4 gene in pcDNA3.1+ plasmid and evaluation of its expression in eukaryotic cells. Methods: Firstly, tb10.4 fragment was amplified by PCR and the PCR product was digested with restriction enzymes. Next, it was cloned into pcDNA3.1+ plasmid. Following that, pcDNA3.1+/tb10.4 recombinant plasmid was transfected into eukaryotic cells. Results: 5700 bp band for pcDNA3.1+/tb10.4 recombinant plasmid and 297 bp fragment for tb10.4 were observed. Cloning and transfection were successful and designed recombinant vector was confirmed by sequencing. Conclusion: Successful cloning provides a basis for the development of new DNA vaccines against tuberculosis. In the current study, the aim was cloning of tb10.4 gene in pcDNA3.1+ plasmid and transfection into eukaryotic cells.
Farhad Razjou; Abolfazl Dabir Moghaddam; Gharib Karimi; Maryam Zadsar
Abstract
Background & Objective: Bacterial, contamination of blood components are a significant risk for transfusion reactions. Inherently, platelet concentrates (PCs) are vulnerable to bacterial contamination, due to the storage condition of processed PCs at room temperature, which provide very suitable ...
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Background & Objective: Bacterial, contamination of blood components are a significant risk for transfusion reactions. Inherently, platelet concentrates (PCs) are vulnerable to bacterial contamination, due to the storage condition of processed PCs at room temperature, which provide very suitable conditions for the proliferation of microorganisms. The current study aimed at investigating the transfusion associated septic reaction rate in patients with hemato-oncological diseases in Imam Khomeini Hospital, Tehran, Iran, and identifying the contaminating bacteria. Methods: A total of 3056 adult patients of the Cancer Center of Imam Khomeini Hospital in Tehran transfused with PCs were studied based on the clinical symptoms of septic transfusion reaction from June 1, 2010 to May 31, 2011. Patient presented with the criteria of reaction and the residual components were evaluated for bacterial contamination by Bac T/Alert system. Results: Patients with leukemia or lymphoma transfused with random-donor PCs were evaluated the signs and symptoms of transfusion reaction occurred only in 12 (%0.4) cases. Automated cultivation found 3 positive blood cultures. Among these a male recipient was categorized as possible septic transfusion reaction and Citrobacterfreundii was isolated from blood sample. Conclusion: Appropriate clinical utilization of PCs transfusion, and ongoing vigilance to recognize, investigate, promptly treat, and report all suspicious transfusion reactions are necessary to manage the transfusion complication including transfusion-transmitted infections (TTI).
Alireza Abdollahi; Mehrnaz Rasoulinejad; Seyed Jalil Mousavi; Fatemeh Fattahi; Akram Sarbiaei
Volume 4, Issue 3 , June 2009, , Pages 113-117
Abstract
Background and Objective: Brucellosis is a main transmittable zoonotic disease, which is endemic, and a common health burden in Iran. Adenosine deaminase (ADA) is an essential enzyme which is involved in purine metabolism and its role in immune system is very important. The aim of this study ...
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Background and Objective: Brucellosis is a main transmittable zoonotic disease, which is endemic, and a common health burden in Iran. Adenosine deaminase (ADA) is an essential enzyme which is involved in purine metabolism and its role in immune system is very important. The aim of this study was to determine serum changes of ADA and C-reactive protein (CRP) levels in patients with brucellosis. Patients and Methods: The study was a case-control one on 36 patients and 36 controls. The serum level of ADA and quantitative CRP was measured in both patients and controls. We also measured the Wright, Coomb,s Wright and 2-mecapto ethanol (2ME) in two participants groups. Statistical analysis was performed using SPSS for windows Version 11.5 Results: ADA serum level in patients group showed a significant difference compared to control group (31.64±25.1 vs. 13.97±3.9, P<0.0001). Quantitative CRP level in patients group was higher than control group significantly (25 ±20.7 vs 6.9±4.4 , P,s Wright, and 2ME with serum ADA and CRP levels (P=NS). Conclusion: This finding shows the serum level of ADA and CRP are two important parameters in diagnosis, treatment of brucellosis with the considering of the clinical manifestations and other paraclinic findings. However it is advisable to perform more studies.
Uropathology
Hedieh Moradi Tabriz; Maedeh Obohat; Farzan Vahedifard; Arezoo Eftekharjavadi
Abstract
Background & Objective: Transitional cell carcinoma (TCC) is the world's seventh most common tumor and forms more than 90% of urinary bladder tumors. Invasive tumors have had a poor prognosis, even with surgical treatment and chemotherapy. Some studies have found that an increase of mast cells in ...
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Background & Objective: Transitional cell carcinoma (TCC) is the world's seventh most common tumor and forms more than 90% of urinary bladder tumors. Invasive tumors have had a poor prognosis, even with surgical treatment and chemotherapy. Some studies have found that an increase of mast cells in TCC is related to the tumor grade and its aggressiveness. This study investigated the relationship between mast cell density (MCD) and features of TCC (tumor stage, grade, prognosis, and recurrence). Materials & Methods: Fifty-one cases with TCC were selected, and MCD was determined by immunohistochemistry (IHC) and Giemsa staining. Mortality rate and tumor recurrence were recorded. Results: The MCD mean was higher in high-grade tumors than in low-grade tumors (in IHC method: 9.127 vs 5.296; in Giemsa method: 5.512 vs 2.608). Also, the MCD mean in dead patients was higher than in survived patients (in IHC method: 11.390 vs 6.211; in Giemsa method: 7.460 vs 3.35). Patients with tumor recurrence had a higher MCD mean than those without recurrence (in IHC method: 9.395 vs 5.475; in Giemsa method: 5.715 vs 2.931). Conclusion: Using mast cell tryptase and Giemsa, MCD has a positive correlation with tumor grade in TCC. Correlations between MCD, recurrence, prognosis, and tumor stage are probably caused by the effect of tumor grade (all with p <0.05).
Bone & Soft tissue Pathology
Monireh Halimi; Samad BeheshtiRouy; Davood Salehi; Seyed Ziaeddin Rasihashemi
Abstract
Background and Objective: Early diagnosis of malignant pleural mesothelioma (MPM) is the key point of its treatment. The main problem is the precise diagnosis of mesothelioma and its differentiation from metastatic lung adenocarcinoma. Mesothelioma exhibits complex immunohistochemical characteristics. ...
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Background and Objective: Early diagnosis of malignant pleural mesothelioma (MPM) is the key point of its treatment. The main problem is the precise diagnosis of mesothelioma and its differentiation from metastatic lung adenocarcinoma. Mesothelioma exhibits complex immunohistochemical characteristics. The aim of this study was to study hybrid immunohistochemistry in the differential diagnosis of primary malignant pleural effusion from metastatic pulmonary cancers. Material and Methods: Twenty tissue samples in paraffin blocks from the pathology department of Imam Reza Hospital in Tabriz whose pathology reports cited mesothelioma or metastatic lung adenocarcinomas, were included in the studies. These tissues were deemed appropriate for IHC in terms of tissue quality and quantity. They were studied and evaluated for pathological markers. Results: In patients with adenocarcinoma CK7 in 100% of patients (13 patients), TTF1 in 61.5% of patients (8 patients) and CEA in 53.8% of patients (7 patients) were positive, but HBME1 and Calretinin were negative for all patients. In patients with mesothelioma, HBME1 and Calretinin were positive in 100% of patients (7 patients) and TTF1, CEA and CK7 were negative. Conclusion: The results of this study showed that CEA, CK7, TTF1, Calretinin and HBME1 are suitable criteria for differentiating between metastatic lung adenocarcinoma and mesothelioma, and can differentiate the mesothelioma and adenocarcinoma with high accuracy.
Fahimeh Asadi Amoli; Ali Sadeghi Tarri; Khalil Hamzeh Doost; Naser Kamalian; Hedieh Moradi Tabriz
Volume 6, Issue 3 , June 2011, , Pages 124-132
Abstract
Background and Objectives: We aimed at evaluating the efficacy of fine needle aspiration biopsy (FNA) in comparison with histopathology and demonstrating whether cytological study could be a proper diagnostic tool in orbital mass lesions. Materials and Methods: In a cross sectional study during 36 months, ...
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Background and Objectives: We aimed at evaluating the efficacy of fine needle aspiration biopsy (FNA) in comparison with histopathology and demonstrating whether cytological study could be a proper diagnostic tool in orbital mass lesions. Materials and Methods: In a cross sectional study during 36 months, patients referred to our ophthalmologic center affiliated to Tehran University of Medical Sciences, for evaluation of orbital masses, were selected for FNA. After the surgery, the results of FNA were compared against histopathologic diagnoses as our gold standard method. Finally, the frequencies of specimen adequacy, the accuracy of FNA in distinguishing benign and malignant lesions and in the exact definitive diagnosis of the disorders were reported. Results: In 27.4% of the total 62 cases, the specimens were inadequate for cytologic evaluations. The rate of specimen adequacy in malignant and benign lesions was 82.6 % and 66.66%, respectively. From the morphologic point of view, the rate of the exact definitive diagnosis of malignant and benign disorders in the total 62 cases was 78.2% and 38.46% and; in the adequate specimens, it was 94.73% and 57.69%, respectively. There was no false positive FNA result for malignant cells and only in one malignant case, the FNA report was falsely negative. All data wee analyzed by SPSS software and p value Conclusion: FNA was considered more beneficial in the diagnosis of malignant lesions. FNA is a relatively noninvasive, rapid, specific, and accurate method for the preoperative primary diagnosis of orbital mass lesions and especially in malignant lesions and in some conditions, specific diagnoses can be achieved.
Alireza Azizzadeh Delshad; Marjan Heshmati; Mohammad Hossein Ghaini
Volume 5, Issue 3 , June 2010, , Pages 126-131
Abstract
Background and Objective: Garlic has been known worldwide as a dietary constituent with many pharmacological effects. The present in vitro study was designed to investigate the putative anticancer effect of garlic extract on cancer cells, and if this effect was through apoptosis induction. Material ...
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Background and Objective: Garlic has been known worldwide as a dietary constituent with many pharmacological effects. The present in vitro study was designed to investigate the putative anticancer effect of garlic extract on cancer cells, and if this effect was through apoptosis induction. Material and Methods: Human colon adenocarcinoma cells HT29 were treated with different doses (1, 5 and 10 mg/ml) of fresh garlic extract in cell culture at 24, 48 and 72 h. Cell death was assessed by viability test, and its apoptotic nature was determined by terminal deoxynucleotidyltransferase-mediated dUTP nick end labeling (TUNEL) assay. All experiments were statistically analyzed using SPSS 11.5 software Results: Garlic extract induced a dose-dependent cell death with the highest values at 72 hours. The apoptosis analyses by TUNEL assay demonstrated that in each dose/time group the apoptotic values are much less prominent than the related cell death percentage found in viability test. In every dose, the sum of apoptotic cells in all three-time points was nearly equal to the percentage of cell death at 72 hours. Conclusion: Fresh garlic extract can induce a dose-dependent apoptotic cell death in cultured HT29 cell line.
Sayed Shojaeddin Shayegh; Hassan Semeyare; Mahmod Nasr; Farzin Ghanavati
Volume 3, Issue 3 , June 2008, , Pages 129-134
Abstract
Background and Objective: The concept of immediate occlusal loading with dental implants offers several advantages. In this research, the effect of type of restoration on Osseointegration rate of dental implants was histologically evaluated. Materials and Methods: Three months prior to implantation, ...
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Background and Objective: The concept of immediate occlusal loading with dental implants offers several advantages. In this research, the effect of type of restoration on Osseointegration rate of dental implants was histologically evaluated. Materials and Methods: Three months prior to implantation, the lower premolar teeth of 15 dogs were extracted. Then, 3 to 4 Maestro™ implants were placed in the healed extraction sites for each dog (n=48). Dividing the dogs into 3 groups, the implants were either loaded 48 hours later, with metallic or prefabricated acrylic crowns, or were left unloaded until the time of sacrifice. Three months after implant insertion, the animals were sacrificed and the samples were investigated to define the Osseo integration rate, lamellar and woven bone percentage and local inflammation of the regenerated bone. Results: No significant difference in the observed criteria was observed among the three groups (p>0.05); however, the unloaded group had the highest osseointegration rate and the group with metallic crown loaded had the least. The prosthesis type had no significant effect on the implant success rate (p>0.05). Lamellar and woven bone percentage of regenerated bone also did not differ in the three groups (p>0.05). One implant from each group failed in this study. Conclusion: Compared to unloaded implants, bone regeneration seems to have similar histological characteristics around immediately loaded dental implants and if properly carried out, these two kinds of restoration materials do not seem to affect the osseointegration and the bone regeneration process.
Behnam Mohammadi-Ghalehbin; Shahram Habibzadeh; Mohsen Arzanlou; Roghayeh Teimourpour; Saeideh Amani Ghayum
Abstract
Background & objective: Pneumocystis pneumonia (PCP) is responsible for pulmonary infection in immunocompromised patients. This study aimed to investigating the frequency of Pneumocystis colonization in patients hospitalized in the intensive care unit (ICU) and evaluating the relationship between ...
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Background & objective: Pneumocystis pneumonia (PCP) is responsible for pulmonary infection in immunocompromised patients. This study aimed to investigating the frequency of Pneumocystis colonization in patients hospitalized in the intensive care unit (ICU) and evaluating the relationship between PCP and Pneumocystis colonization. Methods: In the current cross sectional study bronchoalveolar lavage (BAL)fluids of 100 patients were collected from surgery and neurosurgery ICUs with different underlying corticosteroid therapy conditions. Patients were divided into 2 groups (patients who received corticosteroids and not received corticosteroids). Direct examination on BAL fluids was performed by the Gomori methenamine silver andGiemsa staining techniques. Additionally, 2 filtered air samples of the 2 above mentioned units were collected. A nested-PCR targeted mtLSUrRNA gene and sequencing were used to identify Pneumocystis spp. Results: In direct microscopy, 31 out of 100 hospitalized patients (31%) showed positive results. Twenty-three (46%) of smear positive patients were from the group of patients who received corticosteroid, the other 8(16%) were from the group of patients who didn’t receive corticosteroids (P= 0.001). Pneumocystis jirovecii DNA was detected in 77 out of 100 BAL samples by nested-PCR (77%) in which 40(52%) and 37(48%) samples were obtained from the patients who received and not received corticosteroids, respectively. Pneumocystis genome was found in 1 of the 2 filtered air samples. Conclusion: A significant number of patients who received corticosteroids were also colonized by P. jirovecii that may predispose to PCP or be transmitted to susceptible patients. A significant relationship was observed between the mean hospital stay and detection rate.
GI, Liver & Pancreas Pathology
Seyed Amir Miratashi Yazdi; Elham Nazar
Abstract
Background & Objective: Lymphovascular tumoral invasion is a typical histopathological feature of gastric carcinomas and supports the recognition of high-risk patients for the recurrence. We aimed to study the CD31 expression in diverse subtypes of gastric carcinomas and to show its association with ...
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Background & Objective: Lymphovascular tumoral invasion is a typical histopathological feature of gastric carcinomas and supports the recognition of high-risk patients for the recurrence. We aimed to study the CD31 expression in diverse subtypes of gastric carcinomas and to show its association with the histopathologic findings of the carcinoma to assess the prognosis.Methods: This cross-sectional study was conducted on 40 established patients of gastric adenocarcinoma from radical gastrectomy. The patients were classified according to the pathology assessments. Tumoral tissues were assessed by immunohistochemical staining for the CD31 expression. Malignant behavior was estimated by the histopathological evaluations.Results: CD31 positivity was described in 23 (57.5%) of all evaluated patients. The assessment of CD31 expression and tumor features presented no significant association between the CD31 expression and patients’ age, sex, tumor site, size, grade and stage, subtypes of carcinoma, perineural invasion, and also lymphovascular invasion (P>0.05).Conclusion: Lymphovascular invasion makes valuable additional evidence that might be useful to detect gastric carcinoma patients at high risk for the recurrence, who could be candidates for more supplementary therapies. However, in our society, the CD31 expression did not show any association with the aggressive histopathologic features of this tumor.
Peyman Mohammadi Torbati; Pejman Fard Esfehani
Volume 1, Issue 4 , September 2006, , Pages 149-154
Abstract
Background and Objective: Since the advent of mammography screening, ductal carcinoma in situ (DCIS) of the breast has been diagnosed increasingly. In contrast to the situation in invasive breast carcinoma, there are only a few reports on androgen receptor (AR) status in DCIS and few reports on estrogen ...
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Background and Objective: Since the advent of mammography screening, ductal carcinoma in situ (DCIS) of the breast has been diagnosed increasingly. In contrast to the situation in invasive breast carcinoma, there are only a few reports on androgen receptor (AR) status in DCIS and few reports on estrogen (ER) and progesterone (PR) receptors. Materials and Methods: AR expression was examined in 51 cases of DCIS of the breast and correlated to the degree of differentiation and ER/PR expression status in accordance to immunohistochemical results. Results: AR immunoreactivity was noted in 17 of the cases, whereas the other 34 cases were negative. There was also no significant association between AR expression and the degree of differentiation of DCIS; two of the 11 well-differentiated DCIS cases, nine of the 17 intermediately differentiated cases, and six of the 23 poorly differentiated cases were AR positive (p = 0.091). However, a strong association was shown between the expression of ER (p<0.001) and PR (p = 0.002) and the degree of differentiation of DCIS. In addition, no significant association was found between the expression of AR and the expression of ER (p = 0.37) or PR (p = 0.63) in DCIS of the breast. Conclusion: Clinically significant number of cases of DCIS of the breast expresses AR, which may affect accurate typing of DCIS. Moreover, the expression of AR (but not ER or PR) in DCIS does not appear to be associated with the degree of differentiation.
Amitis Ramezani; Minoo Mohraz; Mohammad Banifazl; Latif Gachkar; Sara Jam; Ali Eslamifar; Farhad Yaghmaie; Kambiz Nemati; Arezoo Aghakhani
Volume 2, Issue 4 , September 2007, , Pages 154-158
Abstract
Background and Objective: Dyslipidemia has become a common problem in human immunodeficiency virus (HIV) disease, especially in patients on combination antiretroviral therapy. In this study we aimed to determine the prevalence of dyslipidemia and metabolic abnormalities in 2 groups of HIV infected patients ...
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Background and Objective: Dyslipidemia has become a common problem in human immunodeficiency virus (HIV) disease, especially in patients on combination antiretroviral therapy. In this study we aimed to determine the prevalence of dyslipidemia and metabolic abnormalities in 2 groups of HIV infected patients receiving highly active antiretroviral therapy (HAART) and antiretroviral-naive patients. Patients and Methods: Forty HIV infected patients treated by HAART as a case group (6 females and 34 males) with a mean age of 40.7 ± 10 years and 15 HIV naïve as a control group (2 females and 13 males) with a mean age of 38.40 ± 8.3 enrolled in this study. The two groups were well matched in respect to age, sex and CD4 cell counts. A standardized questionnaire with epidemiological, clinical, and therapeutic data was completed by physicians. Blood samples were obtained for metabolic measurements. CD4 positive cell count was measured by f lowcytometry. Results: Levels of total cholesterol, triglycerides, LDL, HDL, lactate, and FBS were elevated in 24%, 37%, 3.7%, 44.4%, 29.6% and 11% of patients respectively. There was a significant difference regarding mean total cholesterol and LDL between treated group and controls (p<0.05). There was also no significant difference between treated group and controls regarding triglyceride, HDL, lactate and FBS levels. Conclusion: Our study demonstrated that metabolic abnormalities are relatively common in HIV-infected patients receiving HAART. Therefore, it is recommended to screen the HIV infected patients on HAART for metabolic disorders, potential of morbidity, and possible long-term cardiovascular risk factors.
Mahmoud Reza Kalantari; Tayyebeh Nazeran; Fatemeh Varshoee Tabrizi
Volume 7, Issue 3 , July 2012, , Pages 157-164
Abstract
Background and Aims: P504S (AMACR) is a mitochondrial enzyme expressed in renal cell carcinoma. Some of immunohistochemical markers in renal cell tumors are independent prognostic factor and show relation with histologic grading. AMACR expression increases with higher histological grading in different ...
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Background and Aims: P504S (AMACR) is a mitochondrial enzyme expressed in renal cell carcinoma. Some of immunohistochemical markers in renal cell tumors are independent prognostic factor and show relation with histologic grading. AMACR expression increases with higher histological grading in different tumors; however, in RCC it is not obvious. In this study, we tried to investigate if any relation existed between nuclear grading in renal cell carcinoma and P504S.
Materials & Methods: Fort five cases of formalin fixed paraffin embedded tissue of renal cell carcinoma with different nuclear grades were selected and immunostained using primary antibody to P504s and quantified with H-Score, multiplicative (Mqs) and Additive quick score (Aqs).
Results: P504S was positive in 37 out of 45 (82%) cases. (Mean ± SD) of H-Score: grade I =182±44. II=218±161, III=215±55, IV=190. Mean ± SD of Add quick score: grade I= 6.6± 1.8, II= 7.24±1.4, III= 7.78±1.2, IV= 8. Mean ± SD of Multi quick score: grade I= 9± 5.6, II= 11.38±5, III =12.89±4.7, IV= 12. (Aqs Vs H- Score: r = 0.701, P < 0.007), (Mqs Vs H-Score: r = 0.808, P < 0.001)
Conclusion: P504S is one of the important immunohistochemical markers in primary and metastatic RCC. Our results show that there is no statistically correlation between histological grade of RCC and AMACR staining in semi – quantitative measurement. We suggest AMACR staining to be used as a diagnostic immunohistochemical marker in conjunction with other markers in differential diagnosis of metastatic renal papillary and even clear cell carcinoma.
Sepideh Siadati; Nasibeh Khorram; Mohaddeseh Mirzapour
Volume 8, Issue 3 , July 2013, , Pages 159-164
Abstract
Background and Objectives: There are a few studies on histopathologic type of oral lesions especially from Iran. The aim of this study was to survey the oral lesions in Babol, northern Iran.
Methods: The histopathology records were retrospectively reviewed for all lesions of oral cavity and ...
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Background and Objectives: There are a few studies on histopathologic type of oral lesions especially from Iran. The aim of this study was to survey the oral lesions in Babol, northern Iran.
Methods: The histopathology records were retrospectively reviewed for all lesions of oral cavity and jaws, during the years 1990 to 2009. The data were collected from the archive of pathology and analyzed based on age, gender, site of lesion and histopathologic type.
Results: From the 465 studied specimens, the mean age was 34.6 ± 20.3 years old; female to male ratio was 1.1: 1. The most frequent lesions were inflammatory/reactive (60%), tumoral (25%), cystic (14.2%), and tumor like lesions (0.8%), respectively. The most common inflammatory lesion was mucocele as 54 cases (19.4%). Ameloblastoma was the most common odontogenic tumor (55.5%). The most common odontogenic cyst was radicular cyst (44.8%), and the most common non-odontogenic cyst was mucus retention cyst (75%).
Conclusion: It seems that the malignant oral and jaw lesions have been more prevalent in this study compared to others, thus, the patients must be biopsied earlier to rule out malignant oral lesion in histologic examination.
Horieh Saderi; Parviz Owlia; Maryam Eslami
Volume 4, Issue 4 , September 2009, , Pages 161-166
Abstract
Background and Objectives: Staphylococcus aureus is an important cause of nosocomial and community-acquired infections in every region of the world. Clindamycin is one of the alternative agents used to treat S. aureus infections and accurate identification of clindamycin resistance is important to prevent ...
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Background and Objectives: Staphylococcus aureus is an important cause of nosocomial and community-acquired infections in every region of the world. Clindamycin is one of the alternative agents used to treat S. aureus infections and accurate identification of clindamycin resistance is important to prevent therapeutic failure. Unfortunately, inducible clindamycin resistance is not detected by standard susceptibility tests. This study aimed to determine the prevalence of the macrolides-lincosamides-streptogramins B (MLSB) resistance in S. aureus isolated in four university hospitals in Tehran, Iran. Material & Methods: Two hundreds and forty-four non-duplicate clinical isolates of S. aureus (133 methicillin resistant S. aureus (MRSA) and 111 methicillin susceptible (MSSA) S. aureus) were collected in 2008. Antimicrobial susceptibilities were determined by the D-test. Results: Altogether, 68% and 61.1% of isolates were resistant to erythromycin and clindamycin, respectively; with higher resistance in MRSA isolates compared to MSSA isolates. The constitutive MLSB (cMLSB) resistance phenotype was recognized in 61.1%, while 5.3% had shown inducible MLSB (iMLSB) resistance phenotype. Constitutive MLSB resistance phenotype predominated over inducible MLSB resistance phenotype and susceptible phenotype (83.9, 9.3 and 6.8%, respectively) among the MRSA isolates, whereas susceptible phenotype predominated over constitutive MLSB resistance phenotype and inducible MLSB resistance phenotype (62.6, 31.3 and 2%, respectively) among the MSSA isolates. Conclusion:Considering the higher prevalence of clindamycin resistance in MRSA isolates compared MSSA isolates, routine D-test of MRSA isolates is strongly recommended to prevent treatment failure.
Seyedeh Maryam Sharafi; Iraj Rasooli; Ali Dehghan Kashani; Parviz Owlia; Mohammad Bagher Rezaee; Shakiba Darvish Alipoor Astaneh
Volume 5, Issue 4 , September 2010, , Pages 184-193
Abstract
Background and Objectives: There is a profound inclination among people toward consumption of herbs and herbal products. Some of these products are harmful while health-promoting potentials of some others should be discovered. In the present study the antibacterial, antioxidant, acute and subchronic ...
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Background and Objectives: There is a profound inclination among people toward consumption of herbs and herbal products. Some of these products are harmful while health-promoting potentials of some others should be discovered. In the present study the antibacterial, antioxidant, acute and subchronic and cancer cell toxicity of methanolic and aqueous extracts of Rosa damascena Mill. was studied. Materials and Methods: Antimicrobial activities were determined by agar disc diffusion method. Total phenol content was estimated. Antioxidative properties of the extracts were determined by bleaching of beta carotene or 2,20-diphenylpicrylhydrazyl (DPPH). The Ferric-Reducing Antioxidant Power (FRAP) was expressed as gallic acid equivalents or known Fe (II) concentration for rose extracts and blood sera respectively. Acute and subchronic toxicity and cytotoxicity of the extracts were tested using animal model or Hela cells. Hematology and clinical chemistry parameters were noted. Results: Staphylococcus aureus was found susceptible. The total phenol contents of the methanolic and aqueous extracts were 132.67±3.51 and 117.33±6.81 μg Gallic acid equivalent/mg sample, respectively. Antioxidative effects were higher than those of the synthetic antioxidants were. A dose dependent levels of FRAP was noted in blood sera of rats gavaged with the extracts. Decrease in cholesterol/HDL and LDL/HDL ratios, fasting glucose, blood urea nitrogen, creatinine and uric acid is suggestive of promising therapeutic potentials of the extract. Inhibitory concentration of 50% (IC50) of 4.5 µg/ml was determined for cytotoxicity of the extract against Hela cell line. Conclusion: The results suggest application of rose extract as a natural antioxidant and health-promoting agent.
Amitis Ramezani; Ali Eslamifar; Latif Gachkar; Zahra Pournasiri; Mohammad Banifazl; Arezoo Aghakhani; Mohammad Rabbani; Mohammad Amin Faghih; Ali Akbar Velayati
Volume 3, Issue 4 , September 2008, , Pages 186-190
Abstract
ABSTRACT Background and Objective: There have been concerns over possible association between mercury and neurodevelopmental outcomes in infants. In this study we aimed to determine whether blood levels of mercury are above safe values in Iranian infants or not. Materials and Methods: A ...
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ABSTRACT Background and Objective: There have been concerns over possible association between mercury and neurodevelopmental outcomes in infants. In this study we aimed to determine whether blood levels of mercury are above safe values in Iranian infants or not. Materials and Methods: A total of 85 infants (0, 2, 4 and 6 months old) were enrolled in this study. All of them received vaccines according to Iranian immunization schedules. We measured total mercury in all blood samples by cold vapor atomic absorption. Results: The mean concentration of blood mercury in our subjects were as follows: newborns as 33.95 ± 11.86 nmol/l (with a range of 23.93-52.84), 2 months as 32.94 ± 11.76 nmol/l (with a range of 23.92-52.84), 4 months as 30.44 ± 10.44 nmol/l (with a range of 23.92-50.85) and 6 months as 37.93 ± 12.97 nmol/l (with a range of 21.43-52.34). There was not any significant difference for the mean concentration of blood mercury in those age groups. The lowest level of blood mercury detected was 21.43 nmol/l and the highest level was 52.84 nmol/l. Conclusion: The finding of this study showed that approximately 33% of the infants had blood mercury levels above the U.S. Environmental Protection Agency recommended reference dose of 5.8 μg/l (29 nmol/l). Therefore, it is needed to reduce exposure of infants to mercury from all sources including thimerosal containing vaccines (TCVs) in Iran.
Majid Asadi-Shekaari; Hassan Eftekhar Vaghefi; Masoud Ezzat Abadi pour; Vahid Sheibani; Ali Shams Ara; Parisima Behbahani
Volume 6, Issue 4 , September 2011, , Pages 187-192
Abstract
Background and Objective: As one of the widely used drugs, aspirin (acetyl-salicylic acid, ASA) plays an important role in stroke treatment and prevention. In a previous study, we demonstrated ASA injection at 30 min after ischemia onset is neuroprotective. To determine whether the neurons protected ...
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Background and Objective: As one of the widely used drugs, aspirin (acetyl-salicylic acid, ASA) plays an important role in stroke treatment and prevention. In a previous study, we demonstrated ASA injection at 30 min after ischemia onset is neuroprotective. To determine whether the neurons protected by ASA had a normal ultrastructure, hippocampal CA1 pyramidal neurons were examined by Transmission Electron Microscope (TEM).
Material and Methods: Adult male wistar rats were divided into three different groups (6 animals/group): Sham-operated, control (48 MCAO+vehicle) and aspirin (48 MCAO + ASA). ASA (30 mg/kg) was injected 30 min after ischemia onset. The animals were killed 2 days after ischemia induction and their brain removed, processed, and examined under a TEM.
Results: Apoptotic changes were observed in rats not treated with ASA. In contrast, pyramidal neuron ultrastructure appeared normal in rats that exhibited neuroprotection (defined at the light microscope level) by ASA when studied two days after ischemia.
Conclusion: We conclude that administration of ASA after permanent focal cerebral ischemia remains a considerable therapeutic strategy.
Arijit Majumdar; Angshuman Jana; Soumali Biswas; Swagata Bhattacharyya; Anirban Jana
Volume 9, Issue 3 , July 2014, , Pages 193-198
Abstract
Background and Objective: Fine needle aspiration cytology (FNAC) is well accepted as a useful diagnostic technique in the management of adult patients with head and neck lumps. But, until recently, very few reports have been obtained regarding the role of FNAC in nonthyroidal neck masses in children. ...
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Background and Objective: Fine needle aspiration cytology (FNAC) is well accepted as a useful diagnostic technique in the management of adult patients with head and neck lumps. But, until recently, very few reports have been obtained regarding the role of FNAC in nonthyroidal neck masses in children. Hence, the objective of our study was to determine the diagnostic value of fine needle aspiration cytology in the diagnosis of paediatric nonthyroidalneck masses.
Methods: This descriptive study was conducted at the Department of Pathology,Dr.BCRoyPGIPSKolkata from January2012 to December 2012. Hundred patients with non-thyroidal neck masses fulfilling theinclusion criteria were included in the study. Fine needle aspirations were performed by Leishman-Giemsa staining.
Results: The most common nonneoplastic neck swelling seen in children were an enlarged lymph node due to inflammation 38(42.2%),i.e., reactive lymphadenitis. Others were TB lymphadenitis25(27.8%), nonTB granulomatous lymphadenitis 2(2.22%), chr.sialadenitis 2(2.22%), branchial cyst 4(4.44%) and epidermal cyst 3(3.33%) cases.
Overall sensitivity, specificity, positive predictive value and negative predictive value of FNAC in our cases are 93.06%, 72.22%, 93.06% and 72.22%.
Conclusion:FNA is a valuable diagnostic tool in the management of children with the clinical presentation of a suspicious neck mass. The technique reduces the need for more invasive and costly procedures like open biopsy.
Masood Saleem Mir; Mohammad Maqbool Darzi; Hilal Musadiq Khan; Shayaib Ahmad Kamil; Asif Hassan Sofi; Sarfaraz Ahmad Wani
Volume 9, Issue 2 , April 2014, , Pages 197-112
Abstract
Background & Objectives: Alloxan & streptozotocin are used for inducing diabetic models. Their combination has been used to reduce the individual chemical dosage and minimize the side effects. Present investigation was aimed at studying pre-diabetic clinical changes induced by low doses of Alloxan-STZ ...
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Background & Objectives: Alloxan & streptozotocin are used for inducing diabetic models. Their combination has been used to reduce the individual chemical dosage and minimize the side effects. Present investigation was aimed at studying pre-diabetic clinical changes induced by low doses of Alloxan-STZ cocktail in rabbits.
Methods: New Zealand White rabbits, 1-1.5 kg body weight, were administered alloxan (@50 mg/kg b.w.) and STZ (@ 35mg/kg b.w.) cocktail, as single intravenous dose. Blood glucose levels were monitored (0 h, 20 min, 1 h, and then hourly up to 9 h) and clinical signs noted. Rabbits surviving up to 9 hours were given glucose therapy.
Results: The cocktail caused immediate transient hypoglycaemia, followed by hyperglycaemia, and then progressively severe hypoglycaemia. Hypoglycaemia caused characteristic behavioural alterations from lethargy, through aesthesia, muscular weakness to recumbency. Severely affected rabbits revealed intermittent convulsions and died in coma.
Conclusion: Low dose Alloxan-STZ cocktail induced triphasic immediate response in rabbits. The behavioural changes reflected glycaemic status serving as a guide for institution of glucose therapy.
Masoume Bina; Abazar Pournajaf; Shiva Mirkalantari; Malihe Talebi; Gholamreza Irajian
Abstract
Background and Objective: The production of carbapenemases especially Klebsiella pneumoniae carbapenemase (KPC) is the most important mechanism of enzymatic resistance in isolated Enterobacteriaceae such as K. pneumoniae. The purpose of this study was detected of the carbapenemase producer K. pneumoniae ...
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Background and Objective: The production of carbapenemases especially Klebsiella pneumoniae carbapenemase (KPC) is the most important mechanism of enzymatic resistance in isolated Enterobacteriaceae such as K. pneumoniae. The purpose of this study was detected of the carbapenemase producer K. pneumoniae strains with phenotypic and genotypic methods. Method: Out of 800 strains, 270 K. pneumoniae strains (33.7%), were obtained. Antibiotic susceptibility test was performed by disk diffusion method in accordance with CLSI guidelines. Carbapenem resistant strains were identified by the Modified Hodge Test based on CLSI instruction and PCR for surveying the presence of bla-KPC gene. Results: A total 270 K. pneumoniae strains were collected. Antibiotic susceptibility test results showed the highest and lowest resistance was related to piperacillin (60.6%) and carbapenems (14.6%) respectively. 80.5% (33 of 41) isolates were positive by MHT, but all of them (100%) were negative for amplification of the bla-KPC gene in the PCR method. Conclusion: The MHT was an appropriate method for approving carbapenemase production. Moreover, a laboratory could accept the carbapenemase production with PCR method for the bla-KPC gene, which has the additional profit of validating which KPC is present. How to cite this article: Bina M, Pournajaf A, Mirkalantari S, Talebi M, Irajian G. Detection of the Klebsiella pneumoniae carbapenemase (KPC) in K. pneumoniae Isolated from the Clinical Samples by the Phenotypic and Genotypic Methods. Iran J Pathol. 2015;10(3):199-205.
Microbiology
Zahra Naseri; Nasrin Bahmani; Mohammad Yosef Alikhani; Seyed Hamid Hashemi; Ghodratollah Roshanaei
Abstract
Background & Objective: Brucellosis is one of the most prevalent bacterial zoonotic diseases which afflicts both humans and animals. Genetic factors play an important role in susceptibility to brucellosis. One of these factors is interferon-gamma (IFN-g), which is vital in the defense mechanism against ...
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Background & Objective: Brucellosis is one of the most prevalent bacterial zoonotic diseases which afflicts both humans and animals. Genetic factors play an important role in susceptibility to brucellosis. One of these factors is interferon-gamma (IFN-g), which is vital in the defense mechanism against infectious diseases such as brucellosis. The purpose of this study was to evaluate the relationship between two single nucleotide polymorphisms (SNPs) at positions -611 and -56 within the promoter region of interferon-gamma receptor-1 gene (IFN-g R1) and brucellosis. Methods: In this research,thegenomic DNA was collected from 60 peripheral blood samples infected with brucellosis and 68 healthy volunteers. DNA was extracted by salting out method. Then, DNA genotypes were analyzed using polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLP). Results: The results showed that there is a significant difference in -611 SNP frequencies between control and patient groups. At position -611, CC genotype was related to patient group (P=0.024) and TT genotype was related to the control group. According to the results, males had a higher frequency of Brucella infection. Conclusion: The presence of C allele in position -611 in IFNγ R1 gene promoter was related to a higher risk of disease and susceptibility to brucellosis. Moreover, the presence of T allele in position -611 in IFN-g R1 gene promoter was related to a lower risk of disease.
