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Introduction: Salivary gland tumors (SGTs) may represent a considerable diagnostic challenge, primarily because of the complexity of the classification and the rarity of several entities. Since proliferative activity is a reliable method to assess tumor biology. There has been continuous research to find such biological markers. Ki-67 is a widely accepted proliferation marker, with its expression tightly associated with the cell cycle. It is implicated in many of human cancers as a prognostic factor. MCM-3, member of minichromosome maintenance proteins family, is upregulated in proliferating cells. MCM-3 overexpression in almost all human cancers implicates that it might facilitate the tumorigenesis by playing a role in the malignant transformation of cells. Objectives: to evaluate the MCM-3 protein expression in benign and malignant salivary gland tumors and compare the obtained results with the expression of Ki-67 proliferation antigen. Materials and methods: Immunohistochemical analysis of 20 cases of SGTs with 2 sections from each specimen (20 sections for antiKi-67antibody and 20 sections for antiMCM3antibody) and 5 control cases. Immunohistochemical staining was performed using a Labeled Strept-Avidin Biotin method (LSAB). Results: Normal salivary gland tissue showed negative immunoreactivity for both Ki-67 and MCM-3 in epithelial and myoepithelial cells. All the examined cases showed positive expression for both proliferative markers in benign and malignant SGTs, with different intensities. Conclusions: The proliferative markers Ki-67 and MCM-3 proteins are overexpressed in malignant salivary gland tumors, than benign ones. Both Ki-67 and MCM-3 may be reliably applied as diagnostic markers to distinguish benign from malignant salivary gland tumors.

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TOP2A gene status has a significantly positive correlation with HER2/neu status while it has a significantly negative correlation with hormone receptor status.

Opportunistic viral infections make an important threat to renal transplant recipients (RTRs), and with the use of more intense newly-developed immunosuppressive drugs; the risk of renal allograft loss due to reactivation of these viruses considerably increased. At the top priority of these viruses, human cytomegalovirus and other herpes viruses in addition to polyomavirus, reactivation of these viruses in these chronically immunosuppressed RTRs can lead to renal impairment and subsequently loss, unless early detected and properly treated. Keywords: kidney transplantation, viral infections Citation: Al-Obaidi AB, Jasim MB, Hussein MR, Kadhim HS, Habib MA. Opportunistic viral infections after kidney transplantation: A review. Iraqi JMS. 2020; 18(2): 79-93. doi: 10.22578/IJMS.18.2.1

Background: Peripheral blood lymphocytes (PBL)of Rheumatoid arthritis (RA)patients have a property of phenotypic and functional activation. Glutathione S-transferase pi (GSTπ) has been implicated in playing an important role in the initiation and progression of cellular activation. Objectives: To determine the percentage of cellular expression of GSTπ in the lymphocytes of RA patients in comparison with controls and to explore the relation between its cellular expression and disease activity pattern. Patients and Methods: This prospective study included46 RA patients and 17 healthy controls. Blood samples were taken and from all subjects PBL were isolated and then smeared on slides. The cellular reactivity for GSTπ was determined by immunocytochemistry technique. Results: This study found lower expression of GSTπ in the RA patients with a statistical significant difference with control group, while no statistical difference was found in RA with high and minimum disease activity groups. No correlation was observed between GSTπ with Disease Activity Score (DAS). Conclusion: Although the decrease in the expression of GSTπ in PBLs was pronounced in RA patients, however it doesn't correlate with disease activity state.

Background: Peripheral blood lymphocytes (PBL)of Rheumatoid arthritis (RA)patients have a property of phenotypic and functional activation. Glutathione S- transferase pi (GSTπ) has been implicated in playing an important role in the initiation and progression of cellular activation.Objectives: To determine the percentage of cellular expression of GSTπ in the lymphocytes of RA patients in comparison with controls and to explore the relation between its cellular expression and disease activity pattern.Patients and Methods: This prospective study included46 RA patients and 17 healthy controls. Blood samples were taken and from all subjects PBL were isolated and then smeared on slides. The cellular reactivity for GSTπ was determined by immunocytochemistry technique.Results: This study found lower expression of GSTπ in the RA patients with a statistical significant difference with control group, while no statistical difference was found in RA with high and minimum disease activity groups. No correlation was observed between GSTπ with Disease Activity Score (DAS).Conclusion: Although the decrease in the expression of GSTπ in PBLs was pronounced in RA patients, however it doesn’t correlate with disease activity state.

Background: Depression, a state of low mood and aversion to activity, can affect people's thoughts, behavior, tendencies, feelings, and sense of well-being. It can either be short-term or long-term, depending on the severity of the person's condition. Risk factors include personal or family history of depression, major life changes, trauma, stress, certain physical illnesses, and medications. Objective: This study investigates the prevalence of depression among medical students at the University of Baghdad, college of medicine in Iraq, and the association between some variables and depression. Subjects and Methods: A cross-sectional study design with a convenience sampling method was conducted. A sample of 323 medical students attending the University of Baghdad, college of medicine, were included in this study between July 2019 and September 2019, regardless of their age or gender. The study included five grades according to the year 2019-2020. An online survey was conducted using Google Forms which included two sections. Section 1 included questions about participants' demographics. The second section included the PHQ-9 (Patient Health Questionnaire-9) score. Results: A total of 323 students of different demographics participated in this study. The number of males was 108 (33.4%), and the number of females was 215 (66.6%). The frequency of participants who got mild depression was the highest, i.e., 127 (39.3%), whereas 85 (26.3%) were non-depressed. Therefore, this study sample had a high prevalence of depression. On the other hand, the frequency of mild-moderate depression was 57.9%. Conclusion: The prevalence of depression among medical students at the University of Baghdad was high. Gender, having friends, having a medical condition or disease, having family issues, whether it's easy to communicate with others, encountering an event that affected them, and having a family member who suffers from a psychological condition are associated with depression among students. In contrast, age, marital status, college year, seeking help in the past, and having a part-time job have no association with depression