Management of biobanking for medical genetics research

Biobanking is one of the most important elements of the modern infrastructure for biomedical research. Organization of a biobank on the basis of the N. P. Bochkov Medical Genetics Research Center provides a centralized infrastructure for preparing biomaterial for research. Biobank has the format of a research equipment sharing center and works with two types of unique biomaterials from patients with genetic diseases: blood/blood components and vital cells of various tissue origin. The storage facility of the Biobank is equipped with low-temperature (-80° C) and cryostorage (-196° C) systems. Identification and search of samples is carried out using a bar-coding system and is implemented through the information interface of the biobank, which is integrated into the general database of patients at the Medical Genetics Research Center. Information on biomaterial samples is presented in periodically updated catalogs on the page of equipment sharing center “Biobank”. Biobank collection is available to internal and external users.

Blood Transfusion in Obstetrics and Gynecology: A Retrospective Analysis in Government Naseerullah Babar Hospital Peshawar

OBJECTIVES: To evaluate the indications of blood transfusion in the Obstetrics and Gynecology Department of Government NaseerUllah Khan Babar Memorial Hospital. METHODOLOGY: This retrospective observational study was performed on indoor gynecology and obstetrics patients for the period of one year, a total of 100 patients were included in this study that received blood transfusion. Samples were collected by non-random convenience sampling after getting approval from the hospital ethical committee. Data was analyzed by using SPSS version 20. RESULTS: In this study a total of 100 patients who received blood transfusion were analyzed, out of 100 patients 78% of patients received transfusion due to obstetrical causes and 22% patients got transfused for gynecological causes. Most common blood group transfused was B+ and O+ and mean hemoglobin level at which patients received blood transfusion was 9.7g/dl. Blood components preparation can provide components to treat two to three patients from a single donor. The use of packed cell transfusion should be promoted instead of whole blood transfusion that is not even needed in most of the cases. CONCLUSION: Blood transfusion practice has been used aggressively in gynecology and obstetrics in some cases even without proper indications. There is a need to modify this practice by correcting anemia through drugs to avoid the inappropriate use of blood. Use of blood components should be encouraged.

Evaluation of bacterial contamination of blood components in a tertiary care centre

not available Bangladesh Journal of Medical Science Vol. 21(1) 2022 Page : 213-215

Perbedaan PERBEDAAN NILAI LEKOSIT ANTARA KOMPONEN DARAH PACKED RED CELLS (PRC) DAN PACKED RED CELLS LEUCODEPLETED (PRC-LD) DI UTD PMI KOTA SURABAYA TAHUN 2019

This leukodepleted PRC (PRC-LD) is considered capable of preventing reactions related to blood transfusions because it contains only a small number of leukocytes. The blood component of PRC-LD has also been shown to prevent or reduce transfusion reactions. Leukodepleted is a procedure to reduce the number of leukocytes in the blood or blood components to be transfused to a minimum of <1x106 leukocytes/unit (European standard) or reduce the number of leukocytes >99%. The purpose of this study was to see the difference in leukocyte values ​​in the PRC and PRC-LD components. The method used is analytic, namely research that aims to determine the relationship between variables within the scope of the laboratory. The method used is a comparative study. This study used 30 samples of PRC products and 30 samples of Leucodepleted PRC products at UTD PMI Surabaya City with 450 cc bags. The study was conducted in October - December 2019. The result was that the leukocyte value in the PRC blood component contained blood quality that did not meet the specifications as many as 30 bags (100%) had leukocyte levels >1x106 per bag. Meanwhile, the blood component of PRC-LD contains blood quality that meets the specifications as many as 30 bags (100%), having leukocyte levels <1x106 per bag. Conclusion The quality of PRC Leukodepleted blood component products, the quality of leukocyte levels that meet the specifications, there are 30 blood bags (100%). Keywords: Packed Red Cells Leukodepleted

Impact of transfusion of blood components on the recipient immune system

Transfusions of blood provide essential therapeutic measures in a number of pathological conditions. However, when carrying out blood component therapy, it is important to consider probability of post-transfusion complications. Most of them are immune-mediated side effects. The unfavorable consequences of blood transfusions can manifest at long-range time periods, and pathogenesis of these phenomena may be associated not only with the presence of alloantibodies. They may be caused by alloimmunization to HLA antigens, leukocyte factors, including cytokines, products of leukocyte degranulation, as well as storage-related erythrocyte damage («storage lesion»), immunomodulatory properties of extracellular vesicles or microparticles derived from blood components, and other factors. Despite significant number of publications on this issue, a lot of unresolved issues still remain, concerning transfusion-related effects of blood components on the immune system of recipients. The review article provides the results of current studies in this area. We present and discuss the results of current studies and the features of transfusion-mediated immunomodulation (TRIM) revealed over recent years, when transfusing different blood components. The role of plasma factors, microparticles, platelets and erythrocytes, HLA sensitization and microchimerism in the development of TRIM is highlighted, the data on occurrence and clinical features of TRIM in perioperative period are presented. A separate section of the review provides information about recent clinical studies, devoted to the issues of TRIM in different clinical cohorts, including newborns, patients with malignant neoplasms, immunocompromised patients after heart and vascular surgery. The data on TRIM incidence in the patients with exhausted immune system due to previous disease or treatment, severe comorbidity, extensive surgical thoracic/abdominal intervention and artificial circulation are also in scope. As based on the studies performed, the role of distinct measures, e.g., washing of erythrocyte concentrates, leukodepletion, and gamma irradiation are discussed in view of potential TRIM prevention. The results of published research do not allow us to draw definite conclusions about the effects of blood component transfusion on the immune system of recipients with respect to differences between the studied groups of patients, characteristics of the studied disorders and clinical situations, diversity of hemocomponents, as well as varying standards of transfusion therapy adopted in different countries. However, the systematic literature review may provide some guidance in transfusion-mediated immune modulation.

PENGARUH WAKTU PENYIMPANAN DARAH TERHADAP KADAR HEMOGLOBIN PADA KOMPONEN WHOLE BLOOD DARAH DONOR

Blood transfusion is the process of distributing blood from donors to patients with the aim of replacing blood lost due to bleeding, surgery, shock and malfunctioning of the blood-forming organs that require replacement blood in the form of whole blood or blood components. Blood is stored with the First in First Out (FIFO) system, which is a system that regulates the expulsion of blood in which the first blood that enters will be removed first. The storage period of blood will experience changes in blood components, especially erythrocytes will experience significant changes in shape over the length of time blood storage. The purpose of this study was to determine the difference in hemoglobin levels of donor blood before and after storage for 7 days. This research was conducted at the Blood Transfusion Unit of PMI Kudus Regency. The number of samples used as many as 15 samples. The results showed that there were differences in hemoglobin levels before storage and after storage for 7 days (0.000). The average value before storage was 14.7 g/dl, after storage for 7 days 18.2 g/dl, the highest hemoglobin before storage was 15.4 g/dl, the highest after storage was 18.2 g/dl, while the lowest hemoglobin was before storage. storage 14.0 gr/dl and after storage 17.3 gr/dl. The conclusion is there is a significant difference between hemoglobin levels before storage and after storage for 7 days.