Hematopathology
Fakhri Mohaghegh Zahed; Shahriar Dabiri; Abdolreza Javadi; Sajjadeh Movahedinia; Manzumeh Shamsi Meymandi Pharm; Bahram Dabiri; Parisa khorasani Esmaili; Mitra Sadat Rezaei; Mehrdad Farokhniya
Abstract
Background: To gain insight into the pathogenesis and clinical course of COVID-19 from a historical perspective, we reviewed paraclinical diagnostic tools of this disease and prioritized the patients with a more severe form of disease admitted to intensive care units (ICUs). The objective was to better ...
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Background: To gain insight into the pathogenesis and clinical course of COVID-19 from a historical perspective, we reviewed paraclinical diagnostic tools of this disease and prioritized the patients with a more severe form of disease admitted to intensive care units (ICUs). The objective was to better predict the course and severity of the disease by collecting more paraclinical data, specifically by examining the relationship between hematological findings and cytological variation of blood neutrophils and monocytes.Methods: This retrospective study was conducted on 112 patients with confirmed COVID-19 admitted to Imam Hossein Hospital (Tehran, Iran) from August to September 2020. Peripheral blood smears of these patients were differentiated according to several cytological variations of neutrophils and monocytes, and the correlation to the severity of the disease was specified.Results: The mean percentages of degenerated monocytes, degenerated granulocytes, and spiky biky neutrophils were significantly different among critical and non-critical patients (P<0.05). Degenerated monocytes and granulocytes were higher in critical patients as opposed to spiky biky neutrophils, which were higher among non-critical ones. Comparing the peripheral blood smears of COVID-19 patients (regarding pulmonary involvement in chest computed tomography [CT] scans [subtle, mild, moderate, and severe groups]), the twisted form of neutrophils was significantly higher in the subtle group than in the mild and moderate groups (P=0.003).Conclusion: Different cytological morphologies of neutrophils and monocytes, including degenerated monocytes, degenerated granulocytes, and spiky biky and twisted neutrophils, could help to predict the course and severity of the disease.
Infectious Diseases
Parisa Khorasani Esmaili; Shahriar Dabiri; Sajjadeh Movahedinia; Saeedeh Shojaeepour; Fatemeh Bagheri; Hanie Ranjbar; Manzumeh Shamsi Meymandi; Elham Mohebi; Mehrdad Farokhniya
Abstract
Background & Objective: Since December 2019 in Wuhan, China there is a new form of pneumonia and after expansion in other countries, World Health Organization (WHO) called it Coronavirus Disease 2019 (COVID-19). Since the clinical laboratory findings have played an important role in the progression ...
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Background & Objective: Since December 2019 in Wuhan, China there is a new form of pneumonia and after expansion in other countries, World Health Organization (WHO) called it Coronavirus Disease 2019 (COVID-19). Since the clinical laboratory findings have played an important role in the progression of the disease, this study aimed to evaluate the laboratory findings in COVID-19 patients (before vaccination).Methods: In this case-control study that was conducted from February to August 2020; the laboratory test status in 101 positive COVID-19 patients was evaluated and compared with 101 healthy individuals.Results: The results of our study showed that 21% of patients had low WBC, 24.75% low RBC, 37.62%, low Hb, 18.81% with low HCT, 29.7%, low Plt, 41.58% had High PT, 71.29% high CRP, 17.82% high urea, 11.88% high CR, 15.84% high LDH, 10.89% low sodium, 14.75% low potassium (K). The quantitative examination of blood factors showed that lymph%, mixed%, PLT, HCT, Hb, and RBC were higher in the control group than in the case group. While Neu%, WBC, PTT, CRP, UREA, LDH, K in the patient group were higher than in the control group.Conclusion: According to the results of the study, it can be concluded that in the clinical treatment of COVID-19 patients, much attention should be paid to the laboratory indicators to identify and intervene early in critically ill patients.
Head and Neck Pathology
Parisa Khorasani Esmaili; Shahriar Dabiri; Ayeh Shamsadini; Tooraj Reza Mirshekari
Abstract
Malignant melanoma of the sinonasal area is a rare tumor that arises from melanocytes in the nasal mucosa and is more aggressive than the cutaneous type with a poor prognosis.We report a 60-year-old female with the initial chief complaint of nasal cavity fullness, continuous epistaxis, and nasal bone ...
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Malignant melanoma of the sinonasal area is a rare tumor that arises from melanocytes in the nasal mucosa and is more aggressive than the cutaneous type with a poor prognosis.We report a 60-year-old female with the initial chief complaint of nasal cavity fullness, continuous epistaxis, and nasal bone deformity in the past two months.In a primary examination, a black mass was found, and in an excisional biopsy, the pathologist reported sinonasal malignant melanoma, which was confirmed after IHC staining.In spindle cell tumors of the head and neck area, we should be aware of mucosal malignant melanoma as a differential diagnosis.
Infectious Diseases
Parisa Khorasani Esmaili; Shahriar Dabiri; Tooraj Reza Mirshekari; Fatemeh Nabipour; Ayeh Shamsadini; Hadi Eslami; Mohammad Ali Damghani; Ali Asghar Arabi; Maryam Amizadeh; Fatemeh Fani; Navid Gharaei; Shiva Pouradeli
Abstract
Background & Objective: Mucormycosis (also called black fungus) is an opportunistic serious fungal infection caused by mucormycetes. It can occur in diabetes mellitus patients and other immunosuppressive conditions with recent predisposing factors such as maxillofacial surgery and corticosteroid ...
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Background & Objective: Mucormycosis (also called black fungus) is an opportunistic serious fungal infection caused by mucormycetes. It can occur in diabetes mellitus patients and other immunosuppressive conditions with recent predisposing factors such as maxillofacial surgery and corticosteroid usage.Methods: In this study, 14 patients were referred to the otorhinolaryngology or ophthalmology ward of Shafa Hospital (Kerman, Iran) with primary symptoms of nasal fullness and Facial nerve dysfunction; they were admitted to the hospital to rule out the fungal infection. An endoscopic biopsy was taken from facial sinuses or orbit, and a microscopic evaluation was performed using hematoxylin and eosin (H&E) and periodic acid–Schiff (PAS) staining methods to rule out mucormycosis.Results: In the histopathological examination, broad-based nonseptate branching fungal hyphae were found in nasal sinuses through the endoscopic biopsy. Most of the patients had diabetes mellitus with a primary symptom of facial nerve palsy; also, most of them received corticosteroids (intravenous [IV] or intramuscular [IM] injection). All patients have recently been infected with COVID-19 (less than 1 month ago).Conclusion: COVID-19 infection could play a predisposing factor for many opportunistic infections, such as fungal elements); thus, the physician should be aware of the dose and day of corticosteroid therapy to prevent these infections.
Breast Pathology
Amin Jafari Oliayi; Shahriar Dabiri
Abstract
Background & Objective: Long noncoding RNAs (lncRNAs) as challenging molecules are more known compared to those in the last decade. These transcripts have been validated for carcinogenesis in many types of tissue. Functions of lncRNAs in cancer induction include cell cycle, epithelial to mesenchymal ...
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Background & Objective: Long noncoding RNAs (lncRNAs) as challenging molecules are more known compared to those in the last decade. These transcripts have been validated for carcinogenesis in many types of tissue. Functions of lncRNAs in cancer induction include cell cycle, epithelial to mesenchymal transition progression, apoptosis inhibition, cell migration, and invasion stimulation . LncRNA small nucleolar host (SNHG6) have been proven as an oncogenic transcript in many types of cancer.Methods: RNA extraction was performed for 47 breast specimens in patients with cancer and cDNAs were synthesized. Relative expression of target variants was determined by qPCR and calculated based on the ΔΔCt method. SNHG6 203 was cloned into pcDNA 3.1+ vector for overexpression in MCF7 (HER2-) and SK-BR3 (HER2+) cells. The cell cycle progression of transfected cells was assessed by flow cytometry. Cell migration ability of transfected cells was evaluated by the scratch method and Image J software. Finally, cell viability was assessed by the MTT method.Results: Among four splice variants of SNHG6 (202, 203, 204, and 207), SNHG6 203 was proved as an overexpressed splice variant in breast cancer tumors. This transcript was expressed in HER2-negative breast tumors more frequently than in the positive ones. Overexpression of this variant in target cells resulted in cell cycle progression of MCF7 as HER2-negative cells. Moreover, the overexpression of SNHG6 203 led to a lower migration ability of MCF7 cells and a non-significant reduction of their viability as HER2-negative breast cancer cells.
Infectious Diseases
Moslem Bahadori; Mohammad Hossein Azizi; Shahriar Dabiri; Neda Bahadori
Abstract
The nucleolus is a subcellular membraneless structure of eukaryotic cells. In 1965, in a world’s southern summer summit in Uruguay, the role of the nucleolus as the site of ribosome synthesis, biogenesis, and processing of tRNA was conclusively established. Today, accumulating evidence confirm ...
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The nucleolus is a subcellular membraneless structure of eukaryotic cells. In 1965, in a world’s southern summer summit in Uruguay, the role of the nucleolus as the site of ribosome synthesis, biogenesis, and processing of tRNA was conclusively established. Today, accumulating evidence confirm the multiple functions of the nucleolus, including tRNA precursor processing, cell stress sensing, as well as being influential in gene silencing, senescence, lifespan, DNA damage response (DDR), and cell cycle regulation. Therefore, nucleolopathy is observed in various human diseases. Modern advances have provided fundamental insights concerning how and why the nucleolus is targeted by different pathogenic organisms. Viruses are major organisms that disrupt the normal function of the nucleus and produce nucleoli proteins for facilitating the replication of viruses causing viral infections. In this review, we focus on the possible role of nucleoli upon coronavirus infections, in particular coronavirus disease 2019.
GI, Liver & Pancreas Pathology
Amin Jafari Oliayi; Shahriar dabiri; Malek Hossein Asadi
Abstract
Background & Objective: Colorectal cancer (CRC), like other cancers, needs faster and more accurate identifications. A well-timed prognosis of CRC could be an important turning point in the survival of patients. Supplementary signs, such as long non-coding RNAs (lncRNAs), could be helpful for this ...
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Background & Objective: Colorectal cancer (CRC), like other cancers, needs faster and more accurate identifications. A well-timed prognosis of CRC could be an important turning point in the survival of patients. Supplementary signs, such as long non-coding RNAs (lncRNAs), could be helpful for this purpose. A new possible biomarker for CRC identification is introduced by this study.Methods: RNA extraction was performed by the RNX-Plus solution for 64 tumor and non-tumor tissues. Complementary DNAs (cDNAs) were synthesized, and quantitative real-time PCR was performed for relative expression level measurement and the data was analyzed statistically using the Prism 6 software. For Small nucleolar host gene 6 knockdown, siRNA was designed based on Reynolds rules. The cells were cultured in their appropriate media, and the siRNA-lipofectamine complex was formed. The transfection complex was presented for sw48, sw480, and sw1116 as CRC cells with different grades. After transfection, the SNHG6/β actin ratio was determined. Then, the distribution of siRNA-treated cells was determined by the Partec flow cytometer instrument and analyzed by the FloMax software.Results: SNHG6 was more expressed in CRC tumors than non-tumor tissues. In tumor tissues, SNHG6 upregulation and tumors’ grade progression were concurrent. SNHG6 was upregulated in cases with lymphovascular invasion than in cases with perineural invasion. The knockdown of SNHG6 conduced to G1 arrest in CRC cells, more noticeably in high-grade ones.Conclusion: SNHG6 could be applied as a consideration to differentiate tumor and non-tumor tissues and grade definition in colorectal malignancies, and it could participate in colorectal tumor formation as a cell cycle progressive factor.
Microbiology
Abdolreza Javadi; Shahriar Dabiri; Manzumeh Shamsi Meymandi; Mohammad Hashemi-Bahremani; Hussein Soleimantabar; Bahram Dabiri; Houman Vosough; Maryam Gheidi Sharan; Farnoosh Sedaghati
Abstract
Background & Objective: Coronavirus disease 2019 (COVID-19) is progressively spreading, and many researchers have focused on the prognostic value of laboratory analyses. This study reviewed routine blood parameters, upper respiratory viral load, and chest imaging in recovered and expired COVID-19 ...
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Background & Objective: Coronavirus disease 2019 (COVID-19) is progressively spreading, and many researchers have focused on the prognostic value of laboratory analyses. This study reviewed routine blood parameters, upper respiratory viral load, and chest imaging in recovered and expired COVID-19 patients and evaluated possible correlations.Methods: In this retrograde study, 138 COVID-19 cases were enrolled. Chest tomography scores of patients, routine hematologic and biochemical parameters, and respiratory viral loads were measured. Furthermore, their correlation with severity of disease and the outcome was investigated during a week of admission.Results: The mean age of participants was 58.6±16; 36.2% of whom were diagnosed as critical, 8.7% expired, and 46% showed less than 50% lung opacity. The expiring rate was only correlated to the severity of illness and viral load. During admission, hemoglobin concentration was decreased in critical patients (from 11.49±0.27 to 10.59±0.36, P=0.042) and also among CT-scan scoring groups (P=0.000), while neutrophils (P=0.04), WBC (P=0.03), and platelets (P=0.000) count were increased. In patients with more than 50% lung opacity, leukocyte counts were decreased, but neutrophil and platelets counts showed raise (all P<0.05), while other hematologic parameters did not change. CRP and LDH demonstrated no increase based on the severity of the illness, RT-PCR viral loads and/or outcome. However, both CRP and LDH were increased in patients with more than 50% lobal opacity (CRP: 69.3±9.9 to 1021.1±7.5 and LDH:589.5±93.2 to 1128.6±15.81, P<0.05).Conclusion: We found that hemoglobin, white blood cells, neutrophil, lymphocytes, and platelets count together with chest tomography score might be beneficial for expedition the diagnosis, assessmen the severity of the disease, and outcome in the hospitalized cases, while CRP and LDH might be considered as the consequence of lung involvement.
Cytology
Saeedeh Shojaeepour; Shahriar Dabiri; Bahram Dabiri; Masoud Imani; Maryam Fekri Soofi Abadi; Fatemeh Hashemi
Abstract
Background & Objective: Reproductive toxicity of cadmium (Cd) as an environmental toxicant has been proved in animals and humans. Exposure to Cd impairs testes organs and can reduce male fertility. The present study was designed to investigate the spectrum of histopathological changes in testicular ...
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Background & Objective: Reproductive toxicity of cadmium (Cd) as an environmental toxicant has been proved in animals and humans. Exposure to Cd impairs testes organs and can reduce male fertility. The present study was designed to investigate the spectrum of histopathological changes in testicular tissue focusing on Sertoli cells in rats following Cd intoxication.Methods: In the present experiment, acute testicular toxicity was induced by an intraperitoneal injection of 1.2 mg/kg CdCl2 to the animals in the test group, while the control group received normal saline. After 52 days, the animals were euthanized, and testicular tissue was stained by Hematoxylin and Eosin. In addition, immunohistochemical staining was performed on Sertoli cells for Wilms' Tumor, Melan-A, and CD99 to evaluate histopathological changes.Results: Cd caused significant alterations in seminiferous tubules with varying effects on the patterns of spermatozoa production. These histopathological changes were significantly higher in the Cd group, compared to the control group.Conclusion: The Cd-induced stepwise spectrum changes included sloughing, disorganization, hypospermatogenesis, spermatic cell arrest, germ cell hypoplasia, Sertoli cell-only pattern, fibro-hyalinized seminiferous tubules, and calcification. Sertoli cells accumulated and created multinucleated giant cells in the seminiferous tubules during the atrophic process, which could be dependent upon Sertoli cells viability and function.
Cytology
Zahra Rahemi; Abdolreza Javadi; Behrang Kazeminejad; Abdolali Ebrahimi; Houman Vosough; Afsoon Taghavi; Shahriar Dabiri
Abstract
Background & Objective: Early detection of malignancies in the serous fluids has been remained an issue. A classic diagnostic tool for the ascites and pleural effusions is cytologic study (morphology) with approximately 98% specificity for the detection of cancer cells. This study aimed to evaluate ...
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Background & Objective: Early detection of malignancies in the serous fluids has been remained an issue. A classic diagnostic tool for the ascites and pleural effusions is cytologic study (morphology) with approximately 98% specificity for the detection of cancer cells. This study aimed to evaluate the diagnostic value of three complementary markers in the serosal fluids of patients with malignant cytology and suspected cases.Methods: Seventy two patients with serosal effusion treated in three teaching hospitals were studied. The cases underwent a diagnostic workup to determine the pleural effusion malignancy and etiologies. Complementary markers, including CEA, CA15-3, and CA125 were measured in serosal fluids of three categories of benign, suspicious, and malignant. The study was carried out by Chemiluminescence immunoalayzer. The morphologies were re-evaluated by a consulting Cytopathologist.Results: Of 72 serosal fluid specimens, 41 (56.9%) were related to pleural effusion and 31 (43.1%) were related to ascites. The sensitivity of CEA, CA125, and CA15-3 biomarkers were 64, 84, and 68%, respectively, and the specificity of each test was 100, 86, and 96%, respectively. This was statistically achieved for the combination of the area of markers below the curve (AUC), 0.93 and 90% sensitivity and 91% specificity. Conclusion: The results suggest that complementary CA125, CA15-3, and CEA markers assayed with well-developed immunoassay method might be useful in the differentiation between malignant and benign effusions while combined with conventional cytology. CA125 yielded a significant correlation between cytomorphology and biomarkers based on the correlation coefficient analysis.
Maryam Iranpour; Shahriar Dabiri; Mitra Rezazade; Fatemeh Bagheri
Abstract
Background & Objective: Cervical intraepithelial neoplasia (CIN) is a dysmaturation process in squamous cells in epithelial layer, which highly increases the risk of developing cervical cancer. The aim of this study was to compare the expression of three biomarkers, p16, p63, and CK17 in patients ...
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Background & Objective: Cervical intraepithelial neoplasia (CIN) is a dysmaturation process in squamous cells in epithelial layer, which highly increases the risk of developing cervical cancer. The aim of this study was to compare the expression of three biomarkers, p16, p63, and CK17 in patients with CIN and in those with atypical squamous metaplasia (ASM). Methods: In this study, 100 patients underwent a colposcopy-guided cervix biopsy. Immunostaining for the biomarkers was undertaken on tissue samples containing ASM (n=50) and CIN (n=50). Results: Immunostaining for CK7, P63, and P16 in patients with CIN significantly increased compared to ASM subjects. Conclusion: The expression of CK17, P63, and P16 in CIN varied from that in ASM. The mentioned biomarkers were reliable factors to distinguish ASM from CIN; however, all biomarkers could differentiate CIN from its mimics due to their high degree of sensitivity and specificity.
Neuropathology
Elham Jafari; Shiva Didehban; Shahriar Dabiri; Behshad Mofid
Abstract
A heterogeneous group of CNS tumors are characterized by mixed neuroepithelial and mesenchymal features. Glial tumors manifesting this phenomenon are referred to as gliosarcoma. These tumors are usually mistaken for cerebral metastases or meningioma at operation. Their histological studies have revealed ...
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A heterogeneous group of CNS tumors are characterized by mixed neuroepithelial and mesenchymal features. Glial tumors manifesting this phenomenon are referred to as gliosarcoma. These tumors are usually mistaken for cerebral metastases or meningioma at operation. Their histological studies have revealed an admixture of gliomatous and sarcomatous tissues, which leads to a biphasic pattern. The mesenchymal component can present in different forms such as fibrosarcoma, undifferentiated pleomorphic sarcoma, chondro-osteogenic, and myogenic differentiation, as well as angiosarcomatous and liposarcomatous types. Squamous differentiation, adenoid formations and glandular structures may also be displayed.Herein, we report a rare case who was admitted to the emergency room with decreased consciousness resembling methadone poisoning. Clinical work-up showed a temporoparietal mass on radiological investigation. Histopathological evaluation of the brain mass revealed a gliosarcoma with adenoid formations and a mesenchymal component, which manifested as chondrosarcomatous differentiation. Immunohistochemical studies confirmed the histologic diagnosis through positivity for EMA, GFAP, S100, and vimentin expression in different components.
Dermatopathology
Simin Shamsi meymandi; Shahriar Dabiri; Alireza ZeynadiniMeymand; Maryam Iranpour; Maryam Khalili; Sorour Alijani; Mahin Aflatoonian
Abstract
Background & Objective:Basal cell carcinoma (BCC) is classified into BCC1 or low risk (nodular, superficial type) and BCC2 or high risk (micronodular, morpheaform, infiltrative, and basosquamous types) based on clinical behavior. This study attempts to evaluate immunohistochemical (IHC) findings ...
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Background & Objective:Basal cell carcinoma (BCC) is classified into BCC1 or low risk (nodular, superficial type) and BCC2 or high risk (micronodular, morpheaform, infiltrative, and basosquamous types) based on clinical behavior. This study attempts to evaluate immunohistochemical (IHC) findings and clinical features associated with local aggressiveness and recurrence in BCC lesions.Methods:This is a cross-sectional descriptive study conducted on 42 paraffin blocks (22 BCC1, 20 in BCC2) at Pathology Department of Afzalipour Teaching Hospital. First, demographic features of the patients were recorded and pathology blocks were classified by two dermatopathologists based on histopathological types of BCC1 and BCC2. Then, primary monoclonal antibodies including CD10, CD1a, SMA, Ki67, CD34, and P53 were utilized for IHC study. We compared BCC1 and BCC2 according to IHC markers, demographic features of patients, and tumoral features.Results:The mean number of Langerhans cells (LCs) within epidermis above tumor mass was 14+1.92 and 4.7±1.23 in BCC1 and BCC2, respectively; these results show a significant difference between the two groups (P=0.001). P53 was positive in 41.13±6.39% and 74.5 ±6.26% of the tumor cells in BCC1 and BCC2 groups, which was statistically significant (P=0.001). Also, the mean number of blood vessels was 14.40±1.30 and 21.40±1.97 in BCC1 and BCC2, that was statistically significant (P=0.005).Conclusion: Higher numbers of angiogenesis (SMA positive) and positive P53 were observed in BCC2 than BCC1. Also, more active positive CD1a cells were observed in BCC1 compared to BCC2.
Seyedeh Mehrnaz Kouhbanani nejad; Farzaneh Armin; Shahriar dabiri; Ali Derakhshani; Maryam Iranpour; Alireza Farsinejad
Volume 13, Issue 4 , October 2018, , Pages 454-460
Abstract
Background and Objective: In recent years, due to increasing number of patients with non-healing skin ulcers, skin substitutes have been used. Skin substitutes contain living cells causing faster and more effective wound healing. Therefore, research on the use of autologous and allogeneic cells such ...
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Background and Objective: In recent years, due to increasing number of patients with non-healing skin ulcers, skin substitutes have been used. Skin substitutes contain living cells causing faster and more effective wound healing. Therefore, research on the use of autologous and allogeneic cells such as fibroblasts in skin substitutes has attracted attentions. However, there are discrepancies in the immune responses to allogeneic fibroblasts. Therefore, we aimed to review the immune responses to allogeneic fibroblasts.Methods: Donor fibroblasts were isolated from the skin of three rats. Nine recipient rats which were subcutaneously injected with three different regimens, were divided into three groups: Group 1; phosphate buffered saline (PBS) without cells (control), group 2: allogeneic fibroblasts of one animal source suspended in phosphate buffered saline, and group 3; phosphate buffered saline containing mixed allogeneic fibroblasts of three animal sources. The skin samples were biopsied at 1, 3 and 7 days after injection and studied histopathologically. Results and Conclusion: No signs of redness and edema were observed in the injection sites. In pathology examination, changes such as vasculitis, eosinophils and lymphocytes accumulation around fibroblasts, fibroblast apoptosis and transplant rejection at the injection site were not observed in either group.Subcutaneous injection of allogeneic fibroblasts in rats can be introduced as a promising approach for wound healing as they do not stimulate the immune system.
Hematopathology
Noushin Pouryazdanpanah; Shahriar Dabiri; Ali Derakhshani; Reza Vahidi; Alireza Farsinejad
Volume 13, Issue 4 , October 2018, , Pages 461-466
Abstract
Background and Objectives: The mesenchymal stem cells derived from peripheral blood (PB) have been recognized as a promising source for allogeneic cell therapy. The aim of this study was to investigate the isolation, growth and differentiation ability of peripheral blood-isolated mesenchymal stem cells. ...
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Background and Objectives: The mesenchymal stem cells derived from peripheral blood (PB) have been recognized as a promising source for allogeneic cell therapy. The aim of this study was to investigate the isolation, growth and differentiation ability of peripheral blood-isolated mesenchymal stem cells. Methods: The mononuclear cells were purified from fresh peripheral blood using density gradient centrifugation then cultured in a suitable medium, expanded and characterized. In the following, these cells were cultured in specific adipogenic and osteogenic differentiation media.Results and Conclusion: In spite of the absence of any stimulating factor, the cells adhered to the flasks and developed a rather homogeneous, spindle-shaped morphology after consecutive passages. The cells were confirmed to have mesenchymal phenotype by expression of specific markers (CD90, CD105, and CD73) and absence of CD45 marker, which is specific for hematopoietic stem cells. They could differentiate into lineage-specific committed cells (osteoblasts and adipocytes). According to the findings, the conventional, labour-intensive and time-consuming approaches are not necessary to obtain an optimal number of cells from peripheral blood. This relatively accessible and minimally invasive source of stem cells may open a new era for practical exploitation in regenerative medicine.
Azadeh Sadat Nazouri; omolbanin asadpour; Shahriar Dabiri; Bahram Pourseyedi; Mohamad reza Lashkarizadeh; Hamid Zeinalyneghad
Abstract
Background & objective: Breast cancer is the leading cause of cancer related death in females. Sphingosine kinase 1 (SPHK1) and its product sphingosine-1-phosphate (S1P) are the essential key regulator molecules in breast cancer through their ability to promote cell proliferation, angiogenesis, cell ...
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Background & objective: Breast cancer is the leading cause of cancer related death in females. Sphingosine kinase 1 (SPHK1) and its product sphingosine-1-phosphate (S1P) are the essential key regulator molecules in breast cancer through their ability to promote cell proliferation, angiogenesis, cell proliferation, and lymphagiogenesis. SPHK1 is overexpressed in multiple types of cancer including breast cancer and is associated with resistance to treatment. The current study aimed at investigating the expression of SPHK1 in estrogen and progesterone receptors (ER, PR) negative in comparison to ER, and PR positive breast cancer and their normal controls, and also finding the relationship between SPHK1 expression and high body index (BMI) in the selected groups with breast cancer. Methods: A total of 120 human breast cancer tissue specimens were analyzed for SPHK1 expression using quantitative real–time polymerase chain reaction (q RT-PCR) assay. Detection of hormonal status of breast cancer tissue samples was conducted by immunohistochemical assay. Result: The current study findings showed that the level of SPHK1expression in the breast cancer tissue was significantly higher in patients with estrogen and progesterone negative receptors, compared to the ones without them (P-value< 0.05). The obtained data confirmed that the obesity in patients with ER negative was higher than the ones with positive receptors (BMI> 25). Conclusion: The current study showed that expression of SPHK1gene was higher in the patients with ER and PR negative breast cancer and high BMI, compared with other groups.
Elham Taheri; Shahriar dabiri; Manzoomeh Shamsi Meymandi; Ebrahim Saedi
Abstract
Background & Objective: There is a complicated interaction between leishmaniasis and the host immune cells, and also between the host immune cells. These interactions have fundamental effects on the outcome of the disease. The current study aimed at characterizing the number, distribution, co-localization, ...
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Background & Objective: There is a complicated interaction between leishmaniasis and the host immune cells, and also between the host immune cells. These interactions have fundamental effects on the outcome of the disease. The current study aimed at characterizing the number, distribution, co-localization, and interrelation of 4 types of inflammatory cells in different clinical forms of dry-type cutaneous leishmaniasis (CL). Methods: Thirty-nine cases of CL were studied. The cases were classified clinically as 14 cases of acute leishmaniasis with indurated papules, nodules, and plaques with central crust formation < 2 years, 7 cases of chronic type with non-healing lesions > 2 years, and 12 cases of lupoid leishmaniasis with characteristic papules around previous scars of CL > 2 years. Paraffin-embedded blocks were stained with hematoxylin and eosin (H&E) and also stained immunohistochemically for CD4, CD8, CD68, and CD1a. Results: In acute CL, there was a significant correlation between CD68+ macrophages and CD1a+ epidermal dendritic cells (DCs); the population of CD68+ macrophages and CD1a+ epidermal DCs increased in parallel. In lupoid CL, there was a significant correlation between CD1a+ epidermal DCs, and CD1a+ dermal DCs and population of CD1a+ epidermal DCs; the number of CD1a+ dermal DCs increased in parallel. Conclusions: The result of the current study could be used as a baseline to design and study the new targeted therapy of synergistic effects of macrophages and DCs to phagocytizing leishmania bodies; and/or suggestion planning of individualizing setup of vaccine by autologous interaction of macrophages and DC in CL.
Moeinadin Safavi; Shahriar Dabiri
Volume 11, Issue 3 , July 2016, , Pages 296-297
Abstract
Hemangiomas are considered as vascular malformations which are categorized by the type of vascular channel to capillary, cavernous, venous or arteriovenous(1). Their usual locations are soft tissue , cutaneous or subcutaneous tissue and bone especially vertebra(2).However, intradural extramedullary hemangiomas ...
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Hemangiomas are considered as vascular malformations which are categorized by the type of vascular channel to capillary, cavernous, venous or arteriovenous(1). Their usual locations are soft tissue , cutaneous or subcutaneous tissue and bone especially vertebra(2).However, intradural extramedullary hemangiomas are rare and most of them fall in cavernous type category. Hereby, authors report a woman with spinal intradural extramedullary capillary hemangioma which is exceedingly rare.
Biology & Genetic
Shahriar Dabiri; Mohammadmehdi Moeini aghtaei; Jahanbano Shahryari; Manzume Shamis meymandi; Sahar Amirpour-Rostami; Reza Foutohi-Ardekani
Volume 11, Issue 2 , April 2016, , Pages 104-111
Abstract
Background: The breast cancer is the most prevalent cancer among women, on the other hand absence of myoepithelial cells play a pivotal role in pathogenesis of this cancer. Thus we aimed to investigate the possible abilities of the molecular assay technique to find a relationship between mammary serine ...
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Background: The breast cancer is the most prevalent cancer among women, on the other hand absence of myoepithelial cells play a pivotal role in pathogenesis of this cancer. Thus we aimed to investigate the possible abilities of the molecular assay technique to find a relationship between mammary serine protease inhibitor (Maspin) gene expression possibly secreted by myoepithelial cells, grade of breast cancer and other prognostics factors (ER, PR, and c-erb-B2). Methods: Paraffin embedded blocks of 31 breast cancer patients together with two normal breast tissues were used for IHC staining and Maspin gene RNA detection uses the real-time PCR method. Applying QIAGEN kit, we were able to measure Maspin RNA and Extract the cDNA of different samples for evaluating the Maspin RNA level. Results: We found that the RNA level was considerably lowerin these cancer samples compared with normal samples. In addition, different grades of breast cancer in the obtained results adopt some distinguishable values. The Maspin expression in samples with grades II and III is much lower than the ones in normal group (P<0.05) which could be considered as a promising way in diagnosing of this disease. The results showed no considerable differences in Maspin gene expression of the c-erb-B2 scores in the tumor group except the samples having score 0. The other observation of this research study confirmed that Maspin gene expression couldn't show any differences between the values of both ER and PR in different scores of the tumor group. On the other hand, the cDNA of these patients showed lower values compared with normal samples. Conclusion: Maspin expression was reduced in samples with grade II& III of invasive ductal carcinoma. Based on expression of Maspin Inc-erb-B2, it seems that more expression happened in normal group comparing with different scores of it. We could suggest that there was a reverse relationship between tumor formation and Maspin gene expression. These results showed possible role of Maspin as prognostic factor.
Moeinadin Safavi; Shahriar Dabiri
Volume 11, Issue 2 , April 2016, , Pages 186-188
Abstract
Leishmaniasis include several clinical manifestations, mostly cutaneous, visceral and mucosal (1, 2). Various species can lead to diverse clinical presentations. Thus species identification contribute to proper management (3). Localized Leishmania Lymphadenitis (LLL) is a distinct entity in clinicopathologic ...
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Leishmaniasis include several clinical manifestations, mostly cutaneous, visceral and mucosal (1, 2). Various species can lead to diverse clinical presentations. Thus species identification contribute to proper management (3). Localized Leishmania Lymphadenitis (LLL) is a distinct entity in clinicopathologic field presenting with isolated lymphadenitis and possible cocomitant cutaneous lesion in the absence of systemic visceral involvement (4). Species identification has been acceptable by conventional microscopic evaluation, serologic methods such as isoenzyme and monoclonal antibody detection and particularly PCR. However, definite identification and confirmation of parasite without gene sequencing have always been doubted (5).
Moeinadin Safavi; Shahriar dabiri; Nahid Monsefi
Volume 11, Issue 1 , January 2016, , Pages 85-87
Shahriar Dabiri; Hassan Manafi Anari; Simin Shamsi Meymandi; Reza Fotouhi Ardakani; Sahar Amirpour Rostami; Manzumeh Shamsi Meymandi; Perikala Vijayananda Kumar
Volume 8, Issue 4 , October 2013, , Pages 247-254
Abstract
Background and Objectives: Kerman Province, especially city of Bam in the southeast part of Iran, is epidemics for dry type cutaneous leishmaniasis (DTCL). This study was conducted to compare the effect of different treatments on parasite DNA load following therapies using Real-Time PCR method.
Materials ...
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Background and Objectives: Kerman Province, especially city of Bam in the southeast part of Iran, is epidemics for dry type cutaneous leishmaniasis (DTCL). This study was conducted to compare the effect of different treatments on parasite DNA load following therapies using Real-Time PCR method.
Materials and Methods: Fifteen patients were divided into three groups under therapy with intralesional meglumine antimoniate, topical imiquimod and combination of both drugs. After obtaining consent from patients, punch biopsies were taken before and after treatment .To compare the amount of DNA load a relative quantitative Real-Time PCR method was designed and set up using Leishmania tropica ITS (internal transcribed spacer) gene. After doing PCR, the obtained results were analyzed using 2^-ΔΔCT method and relativity of DNA load before and after treatment were calculated.
Results: The highest falling of DNA load was for imiquimod (mean 4/7 cases), glucantime (mean 2/2 cases) and combination therapy (mean 2/4). From clinical point of view combination therapy had the best response. On the other hand, the overall IHC findings showed good response based on decreased CD1a epidermal, increased CD1a dermal, decreased CD68 macrophages and increased CD3 and CD20 of dermis.
Conclusion: We set up a new method to compare Leishmania DNA load using the stable human gene of beta actin for normalization. We concluded that imiquimod was immune modulator and had synergistic effects on the best parasitocidal drug of glucantime for better response.
Shahriar Dabiri; Hadiseh Zakeridana; Manzoumeh Shamsi Meymandi; Abbass Etminan; Jalal Azmandian; Simindokhet Habibzadeh; Farzaneh Khazanfari; Saeideh Parvaresh
Volume 8, Issue 4 , October 2013, , Pages 255-262
Abstract
Background & Objectives: Chronicity of lupus nephritis (LN) should be considered for interaction of cell mediated immunity (CMI) and dendritic cells in glomeruli and tubulointerstitial areas. In this study establishment of immunohistopathological changes of dendritic cells and other immune effector ...
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Background & Objectives: Chronicity of lupus nephritis (LN) should be considered for interaction of cell mediated immunity (CMI) and dendritic cells in glomeruli and tubulointerstitial areas. In this study establishment of immunohistopathological changes of dendritic cells and other immune effector cells in lupus nephritis comparing with non-lupus nephritis was performed.
Materials & Methods: Renal needle biopsies of 35 cases of lupus nephritis and 35 cases of other causes of persistent proteinuria were compared for immunohistochemistry for plasmacytoid (CD123), myeloid (CD11c) dendritic cells, macrophages (CD68) and lymphocytes (CD4) markers. Statistical analysis of the data was performed using Spearman and Pearson correlation or ANOVA and t- student test (P < 0.05).
Results:Significant difference of glomerular and interstitial spaces for presence of myeloid-plasmacytoid dendritic cells and lymphocytes except macrophages between lupus nephritis and other causes of persistent proteinuria have found (P<0.001). Positive significant correlations were observed between glomerular presentation of myeloid dendritic cells and chronicity index but not with other markers in lupus nephritis (P <0.001). Statistically significant changes between presence of all markers and activity index were not observed (P >0.05).
Conclusions: The myeloid dendritic cells might have synergistic role with other immune cells in pathogenesis and progression or chronicity of lupus nephritis.
Seyed Hassan Hosseini Hooshyar; Hamid Zeinalinejad; Mehran Mosallami; Shahriar Dabiri; Jahanbanoo Shahryari; Moeinadin Safavi
Volume 8, Issue 4 , October 2013, , Pages 267-272
Abstract
We present unusual retained remnants of hidden conjoined twin of possible abdominal pagus after 21 years who presented with abdomenpain and incidentally have found his forbidden conjoined twin. He presented for many years with a palpable epigastric mass, and recent abdominal pain, early satiety, nausea ...
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We present unusual retained remnants of hidden conjoined twin of possible abdominal pagus after 21 years who presented with abdomenpain and incidentally have found his forbidden conjoined twin. He presented for many years with a palpable epigastric mass, and recent abdominal pain, early satiety, nausea and vomiting. The mass was a like deformed fetus weighing 815 gr who was anencephalic and deprived of viscera but there was a distinct vascular connection through the rig limb. Microscopic examination revealed a normal epidermis with melanocytes overlying dermis with mature adnexa. The fetus plain film after surgery showed a rather complete skeletal system. All above findings were in favor of fetus in fetus, a rare congenital entity in which a nonviable parasitic fetus grows within the body of its twin.
Hadiseh Zakeridana; Ali Naderi; Ahmad Ahangaran; Shahriar Dabiri
Volume 8, Issue 3 , July 2013, , Pages 178-183
Abstract
Inflammatory myofibroblastic tumor is an uncommon benign neoplasm and its presentation in small bowel is rare. Due to clinical manifestation, laboratory data and radiologic results, there is an increased risk of over diagnosis as malignant tumors particularly malignant lymphoma in childhood therefore ...
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Inflammatory myofibroblastic tumor is an uncommon benign neoplasm and its presentation in small bowel is rare. Due to clinical manifestation, laboratory data and radiologic results, there is an increased risk of over diagnosis as malignant tumors particularly malignant lymphoma in childhood therefore may be resulting in wrong therapeutic approach. However pathologic findings could be demonstrated definite diagnosis based on markedly proliferation of bland looking spindle cells which their presence can be confirmed by immunohistochemistry staining to show myofibroblastic differentiation. We describe here an unusual presentation of inflammatory myofibroblastic tumor of the terminal ileum in a 19-month-old girl who presented with anemia, eosinophilia, intestinal obstruction, focal ossification and dystrophic calcification within the tumor.