ذولي الاسئلة اللي تكرر منهن امسكيو الfungi الاتذكرهن اشرتهن بالوردي بس انتو اقروهن كلهن
#microbiology
What are the verulence factors of H.pylori that helps this bacteria to cause different diseases?
#كوز د زينب ..
#مهم
وجايبته قبل الدكتوره
Amantidine and rimantidine
inhibiting the uncoating of viral RNA in infected cells and thus effectively preventing viral replication.
Amantadine interferes with the release of infectious viral nucleic acid into the host cell through interaction with the transmembrane domain of the M2 protein of the virus. It also appears to prevent virus assembly during replication in some cases.
■■■■
Tamiflu
Oseltamivir exerts its antiviral activity by inhibiting the activity of the viral neuraminidase enzyme found on the surface of the virus, which prevents budding from the host cell, viral replication, and infectivity.
Figure 1. Mechanisms of action of monoclonal antibody-based products.
(A) Targeting growth factor receptors, blocking the binding of an activating ligand and inhibiting receptor homo- and heterodimerization;
(B) Targeting of tumour vasculature receptor or its ligands inhibiting angiogenesis;
(C) Induction of apoptosis by recruitment of immune effector cells (ADCC) or activation of the complement cascade (CDC), and the use of antibody-based molecules to engineer T lymphocytes (CAR T cells);
(D) Immune checkpoint inhibition by blockade of the PD-1/PD-L1 axis or CTLA-4 inhibitory receptors, increasing cytotoxic T cell activity;
(E) Simultaneous targeting of two antigens, one on tumour cells and one on effector T cells, by using bispecific antibodies (BITE, bispecific T-cell enhancing); and
(F) Delivery of payloads such as toxins and radioisotopes to tumour cells. Created with BioRender.com (accessed on 17 March 2021)
Growth Characteristics H pylori
نختصرها بcom.U 💀
catalase positive
oxidase positive
motile
urease positive (strong producer of urease)
#د_زينب
#مرشح
#تذكر
Neisseria
More than one sexually transmitted disease may be acquired at the same time, e.g. gonorrhea with syphilis, Chlamydia, human immunodeficiency virus (HIV), hepatitis B virus, so need treatment for more than one pathogen.
Why patients with immunodeficiencies such as AIDS and SCID are
more susceptible to various cancers ?
because they lack essential T-cell or cytotoxic functions.
Possible causes of cancerous transformation include:
Irregularities in mitosis.
Genetic damage.
Activation of oncogenes.
Infection by retroviruses.
#طالب
#مرشح
مهم جدا Mcq
🔁Burkitt lymphoma➡️ the translocation chromosome 8 to chromosome 14.
🔁Myelogenous leukemia➡️translocation of a proto-oncogene on chromosome 9 to a different site on chromosome 22.
❌️colorectal carcinomas➡️ (deletion on chromosome 17).
❌️Retinoblastoma ➡️(deletions on chromosome 13).
➕️cells bearing three rather than the usual pair of chromosome ➡️leukemia (occurring with chromosome 8 and 12).
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#مرشح
نصيحة اخاف مقرر تترك الفطريات لان ماتلحك حاول تخصص وقت تحل هاي الاسئلة وحتى لو تحفظهم لان على اغلب تتكرر نفس الاسئلة .
Читать полностью…1-lipopolysaccharides (adhere to host cell inflammation )
2-outer membrane protein (OMP) / adhere to host cell)
3-Exotoxin (the vaculating (VAC) gastric mucosal cell).
4- the secretary enzyme :
A)Urease (neutralize gastric acid )
B)mucinase , protease , lipase .
5-flagella
6-The effector cytotoxin( Cytotoxin associated gene A “ CAG A).
صراحه هذا سويته حسب الرسم الموجود بالملزمه .
طب بابل دفعة 2010
تصوير مقطع امتحان الاوسكي
حاليا
د.كرار علاء طبيب مقيم في امريكا
د.معز طبيب أورام
قناة توفير كتب طبية مع التوصيل ❤️
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مرشح ومهم ويجي💀
What are differenses between Campylobacter and Salmonella?
#د_زينب
#مرشح
Bacteria cease Reactive arthritis:
Campylobacter
Shigella
Salmonella
Chlamydia
Ureaplasma
Yersinia
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#مرشح
مهم مرشح
What interrelationship between genes and cancer ?
(1) Cancer cells often have damaged chromosomes.
(2) A specific alteration in a gene can lead to cancer.
(3) The predisposition for some cancers is inherited.
(4) Rates of cancer are highest in Immunodeficiency diseases
(5) Mutagenic agents cause cancer.
(6) Cells contain genes that can be transformed to cancer-causing oncogenes.
(7) Tumor-suppressor genes (antioncogenes) exist in the normal genome
#د_طالب
#مرشح