Evaluation of sHLA-G levels in serum of patients with prostate cancer identify as a potential of tumor marker / 대한해부학회지

Prostate cancer is the most common cancer type in men and is the second cause of death, due to cancer, in patients over 50, after lung cancer. Prostate specific antigen (PSA) is a widely used tumor marker for prostate cancer. Recently, PSA is discovered in non-prostatic cancer tissues in men and women raising doubts about its specificity for prostatic tissues. PSA exists in low serum level in healthy men and in higher levels in many prostate disorders, including prostatitis and prostate cancer. Thus, a supplementary tumor marker is needed to accurately diagnose the cancer and to observe the patient after treatment. Recently, soluble human leukocyte antigen-G (sHLA-G) has been introduced as a new tumor marker for different cancer types, including colorectal, breast, lung, and ovary. The present descriptive-experimental study was carried out including patients with malignant prostate tumor, patients with benign prostate tumor, and a group of health men as the control group, as judged by an oncologist as well as a pathologist. After sterile blood sampling, sHLA-G was measured by enzyme-linked immunosorbent assay in each group. The data was then analyzed using one-way ANOVA. P≤0.05 was considered as statistically significant. The results showed that the mean of sHLA-G level was high in patients. Also, it was found that there was a significant difference in sHLA serum level between the three groups. The data revealed that sHLA-G can be a novel supplementary tumor marker in addition to PSA to diagnose prostate cancer.

Erratum to: Evaluation of sHLA-G levels in serum of patients with prostate cancer identify as a potential of tumor marker / 대한해부학회지

No abstract available.

Frequency of human papillumavirus among women with high-grade squamous intraepithelial lesions and invasive cervical cancer attending Shahid Beheshti University of Medical Sciences Clinics, Tehran, Iran

The previous studies reported some information about prevalence release of high-risk HPV types in HSIL or cervical cancer globally and in Iran, however, this information is not enough for final judgment about vaccination against HPV or any screening program. The aim of the present study was to assess the HPV type distribution in HSIL and ICC specimens of women attending Shahid Beheshti University of Medical Sciences teaching hospitals, Tehran, Iran for treatment during 10 years. This retrospective- descriptive study evaluated the HPV type distribution of pathologic specimens of Iranian women with invasive cervical cancer [ICC] and high-grade squamous cell intraepithelial lesions [HSIL]. Formalinfixed tumor biopsies that were retrieved from women presenting with histological confirmation for ICC and 17 pathologic confirmation for HSIL specimens. The most frequently identified HPV type 16 among both groups, women with invasive cervical cancer [42.18%] and women with High Grade Squamous Intraepithelial Lesion [29.41%], followed by HPV18, HPV31 and 26. HPV16 and / or 18 accounted for 82.2% of all infected samples. The dominance of HPV16 over other high-risk types might be even higher than in a region with low HPV exposure. However, there was no strong evidence for any judgment that show to the policy makers; which one is cost-effectiveness and feasibility for cervical cancer prevention in Iran, vaccination, screening or both? More population based study and national meta-analysis needed for better understanding of HPV prevalence and HPV DNA patterns in Iran

Cluster and principal component analysis of human glioblastoma multiforme [GBM] tumor proteome

Glioblastoma Multiforme [GBM] or grade IV astrocytoma is the most common and lethal adult malignant brain tumor. Several of the molecular alterations detected in gliomas may have diagnostic and/or prognostic implications. Proteomics has been widely applied in various areas of science, ranging from the deciphering of molecular pathogen nests of discuses. In this study proteins were extracted from the tumor and normal brain tissues and then the protein purity was evaluated by Bradford test and spectrophotometry. In this study, proteins were separated by 2-Dimensional Gel [2DG] electrophoresis method and the spots were then analyzed and compared using statistical data and specific software. Protein clustering analysis was performed on the list of proteins deemed significantly altered in glioblastoma tumors [t-test and one-way ANOVA; P< 0.05]. The 2D gel showed totally 876 spots. We reported, 172 spots were exhibited differently in expression level [fold > 2] for glioblastoma. On each analytical 2D gel, an average of 876 spots was observed. In this study, 188 spots exhibited up regulation of expression level, whereas the remaining 232 spots were decreased in glioblastoma tumor relative to normal tissue. Results demonstrate that functional clustering [up and down regulated] and Principal Component Analysis [PCA] has considerable merits in aiding the interpretation of proteomic data. 2D gel electrophoresis is the core of proteomics which permitted the separation of thousands of proteins. High resolution 2DE can resolve up to 5,000 proteins simultaneously. Using cluster analysis, we can also form groups of related variables, similar to what is practiced in factor analysis

study of "dihydropyrimidinase related proteins [DRPs]" expression changes influence in malignant astrocytoma brain tumor

Dihydropyrimidinase Related Proteins [DRPs] have known homologous to the Collapsing Response Mediator Proteins [CRMPs]. The DRP gene family has comprised four members, DRP 1, 2, 3, and 4, all out of which have considered to be involved in axonal outgrowth and path-finding. The protein has extracted from tumor, normal brain tissues, and then the protein purity has evaluated by Bradford test and spectrophotometric methods. In this study, proteins has separated by Two-Dimensional Gel [2DG] electrophoresis method and then spots have analyzed and compared using statistical data and specific software [Progenesis Same Spots].Spots have identified by pH isoelectric, molecular weights and data banks. The 2D gel has shown 800 spots totally. Two spots have reported for DRP2, and one spot has reported for DRP3 in the human brain proteome, that have differed in pH isoelectric, and Molecular Weights values. This protein family has involved in neuronal differentiation and axonal guidance, and abundantly influenced in the developing brain, but their expression persisted into adulthood. DRP2 has regulated by phosphorylation, Glycogen synthase kinase 3, regulate phosphorylation of DRP2 an inactive from, and induced neuronal polarity

patient with cystic lymphangioma in pancreas

Cystic lymphangioma of the pancreas is extremely rare, accounting for less than 1% of pancreatic tumors. Though congenital, it can affect all age groups. Cystic lympangioma occurs more frequently in females. Patients usually present with epigastric pain and an associated palpable epigastric mass. Complete excision is curative, even though, depending on the tumor location, surgery may be simple or involve extensive pancreatic resection and anastomoses. In this case report, we discuss a 63 -year old patient who presented with epigastric pain and on investigation was found to have pancreatic head cystic lymphangioma. At surgery the tumor was completely excised, with preservation of pancreatic duct. Histology and immunohistochemistry confirmed cystic lymphangioma of the pancreas. This case highlights that a diagnosis of cystic lymphangioma of the pancreas should be taken into consideration as a differential diagnosis of pancreatic cystic lesions

prevalence of Chlamydia trachomatis in patients who remained symptomatic after completion of sexually transmitted infection treatment

Sexually transmitted infections [STIs] are among the most common causes of illness in the world and have far-reaching health, economic and social consequences for many countries. Failure to diagnose and treat STIs at an early stage may result in serious complications and sequels. This study aimed to determine the prevalence of Chlamydia trachomatis infection in patients who remain symptomatic after completion of their first episode of treatment for STI. We conducted a cross-sectional study on 49 patients suffering from symptoms or signs of sexually transmitted infections despite their first complete anti STI treatment. Conducting physical exam and smear preparation from vaginal discharge, diagnosis was confirmed by Polymerase chain reaction [PCR] method on every patient's first-voided urine sample. Among the etiologic factors investigated in this study, Chlamydia was reported in 17 patients. Trichomoniasis, Candidiasis, Gonorrhea and nonspecific germs were next organisms with 11, 9, 6 and 6 patients, respectively. Sixteen specimens were PCR positive [32.65%], while 33 patients had negative PCR results [67.34%] for Chlamydia trachomatis. Gonorrheal infection was the most prevalent infection in patients with completed treatment [6/10], which must be remembered in patients follow ups, because this prevalence warrants empirical therapy for Gonorrheain similar clinical conditions. Chlamydia trachomatis was the responsible organism in approximately a quarter of patients [17/75] who despite their full compliance on anti-Chlamydial treatment still suffered from signs and symptoms of STI. This rate also recommends empirical therapy for Chlamydia trachomatis in the similar clinical signs and symptoms

study of contractility of proximal surgical margin in esophageal cancer

The marginal length from main tumor in esophageal cancer is a considerable issue regarding surgical management and adjuvant treatment, so we decided to study the contractility effect on the proximal surgical margin after immersing it in 10% buffered formalin as a fixative. The proximal marginal length of ten sequential patients with esophageal cancer who underwent transhiatal esophagectomy were studied, on the operating table as fresh specimens, immediately after resection, and next 24, 48 and 72 hours after immersing in 10% buffered formalin. The contraction continued through the day 3, the mean contractility after one day was about 27%, after two days was 33% and after three days was 38%. This study shows how the proximal esophageal margin can vary by the time, after immersing in 10% buffered formalin and should be considered in every settings and reporting documents by pathologists

Hedgehog signalling pathway: carcinogenesis and targeted therapy

Hedgehog signalling pathway has not only a critical role in cell proliferation, differentiation and tissue polarity at embryonic period but also has a vital role in stem cell proliferation, tissue healing and carcinogenesis. Recent research has increased our understanding of this pathway and its relation to other signalling pathways. In addition, a large number of studies confirmed the alteration of Hh signalling pathway in various types of human malignancies including basal cell carcinomas, medulloblastomas, lung, gastrointestinal, ovarian, breast, prostate cancers and leukemia. More than 50 small biomolecules have been introduced which have inhibitory effects on Hh signalling pathway. Although, in many tumors some acceptable results have been showed in phase I clinical trial, closer studies are required to improve drug bioavailability, to decrease the side effects and to find the right small molecules for specific types of cancers, considering patients overall benefits as well

[Evaluation of immunoreactivity of cellular markers of CD15 and CD30 among patients with classic Hodgkin's lymphoma]

Hodgkin's lymphoma [HL] is a curable lymphoid malignancy. Different Immunohistochemical markers specially CD15 and CD30 are used to diagnose HL and differentiate it from other lymphomas including anaplastic large cell lymphoma [ALCL]; this study was carried out in patients with Hodgkin's lymphoma to determine the frequency of these markers in Iranian patients with HL. A cross sectional study was done out on all patients with definite diagnosis of classic Hodgkin's lymphoma in the selected hospitals. Patients were classified according to WHO classification of the HL type into: mixed cellularity, nodular sclerosis, lymphocyte rich and lymphocyte depletion subtypes. CD15 and CD30 immunophenotype were detected by monoclonal immunostaining method. The frequency was determined in each group and C.I. [confidence interval] was calculated for the Iranian population. The studies were done on 65 patients. Mean age was 31.9 +/- 18.1 years. 37 [56.9%] were male. CD15 and CD30 was positive in 50 [76.9%] and 58 [89.2%] respectively. Both markers were positive in 46 [70.8%] and were negative in 3 [4.6%]. There was no significant relationship between CD15 and CD30 positivity and age/ gender [p<0.6]. It seems that there is a high frequency of positivity for CD15 or CD30 in Iranian patients with Hodgkin's lymphoma. These markers are useful in diagnosis of Hodgkin's lymphoma. However, in cases who are CD15 negative and CD30 positive, it is better to use additional markers for avoiding misdiagnosis as anaplastic large cell lymphoma

Clinicopathological features of primary central nervous system lymphoma

To investigate the anatomic location, immunologic, and clinicopathological features of patients with primary central nervous system lymphoma [PCNSL]. From May 1993 to December 2004, at Shohada Hospital, Tehran, Iran, the clinical data of 110 PCNSL patients, including the age, sex, duration of symptoms, radiological findings, site of tumors, immune status, and history of immunocompromised state [such as organ transplantation, radiotherapy, steroid therapy or AIDS] were assessed. The mean age of the patients with PCNSL was 47.02 +/- 15.8 years. There were 42 female and 68 male patients. One hundred and six cases [96.3%] were diagnosed as B-cell lymphoma. Most of the PCNSL in our study are unifocal. More than 70% of tumors were in a cerebral hemisphere and periventricular location, usually involving the corpus callosum or basal ganglia. No patients had been in immunocompromised states. Symptoms of increased intracranial pressure or changes in personality, vision, or motor function are most common. Seizures are seen in approximately 10% of patients. The number of PCNSL cases showed a gradual rise in incidence. The results of this single hospital 12-year survey of PCNSL are in agreement with data from other single institutions and regional surveys concerning clinical features. However, in contrast with the literature, most of our patients were immunocompetent. The age at diagnosis is also lower than in most reports