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Iloukou PJ, Boumba AL, Pouki FS, Massengo NR, Takale RP, Moukassa D, Ennaji MM. Gene expression profiling of p53 and c-myc in HTLV-1 positive blood donors in Congo. Vopr Virusol 2024; 69:127-133. [PMID: 38843019 DOI: 10.36233/0507-4088-199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Indexed: 06/15/2024]
Abstract
OBJECTIVES The HTLV-1 infection persists for life, remaining as asymptomatic viral reservoirs in most patients, ensuring the chain of transmission, but around 4% develop adult T-cell leukemia/lymphoma (ATLL). HTLV-1 is an oncogenic retrovirus that transforms CD4+ T lymphocytes and deregulates the lymphoproliferative pathways that contribute to the development of ATLL. To achieve cell transformation, most oncogenic retroviruses use proto-oncogene capture transduction, with proviral integration disrupting the expression of tumor suppressors or proto-oncogenes. THE AIM We conducted this study on the prevalence of HTLV-1 infection in blood donors to expand the HTLV-1 database, assess the risk of transmission via blood products, as well as evaluate the risk of persistent infection or development of neoplastic diseases in HTLV-1 carriers. MATERIALS AND METHODS This is a cross-sectional study of blood donors of all categories. For this study, 265 blood donors were recruited at the Centre National de Transfusion Sanguine in Brazzaville. After testing for HTLV-1 antibodies by ELISA, proviral DNA was extracted from all ELISA-positive samples for detection by nested PCR, followed by RT qPCR using specific primers p53 and c-myc for gene expression. RESULTS 20/265 were positive for anti-HTLV-1 antibody, 5 donors were positive for proviral DNA. The prevalence of HTLV-1 was 1.8%. All HTLV-1-positive donors were male (1.8%), with a positive correlation (p = 0.05); the 1.1% of positive donors were regular, with the majority aged between 31 and 45 years (1.5%), and concubine donors were the most frequent (1.1%). All samples showed normal expression of the p53 and c-myc genes. CONCLUSION The prevalence, though low, remains a serious problem. No abnormal p53 orc-mycgene expression was detected in HTLV-1-positive donors, which could mean that none of the T lymphocytes in these donors had been transformed by HTLV-1.
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Affiliation(s)
- P J Iloukou
- Hassan II University of Casablanca
- Marien N'gouabi University
| | - A L Boumba
- Marien N'gouabi University
- National institute for Research in Health Sciences (IRSSA)
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Mengjiao L, Yushan X, Yan L, Dawei C, Xiaojun Z, Yongjun W, Cuifen S, Jue X. Prevalence of transfusion-transmitted infections in hospitalized patients before transfusion and volunteer blood donors in Zhejiang Province, China. Infect Dis Now 2024; 54:104861. [PMID: 38316362 DOI: 10.1016/j.idnow.2024.104861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVES To assess the need for screening of transfusion-transmitted infections (TTIs) in blood products, we assessed TTI seroprevalence in blood donors and hospitalized patients. METHODS We collected 2760 serum samples from three regions of Hangzhou, Ningbo and Huzhou from April 2021 to March 2022, and they tested by enzyme-linked immunosorbent assay (ELISA) for Hepatitis B surface antigen (HBsAg), Hepatitis C (HCV), Treponema pallidum (TP), Cytomegalovirus (CMV), Epstein-Barr virus (EBV), Hepatitis E virus (HEV) and Human T-cell lymphotropic virus type 1/2 (HTLV-1/2) antibody levels. RESULTS Screening test results showed that the positive rates for HBsAg, anti-HCV and anti-TP were 3.01 %, 0.39 % and 0.18 %, respectively. The positive rates for CMV IgM and CMV IgG were 0.76 % and 96.96 %, while the positive rates for EB VCA-IgM and EB EA-IgG were 1.88 % and 10.47 %; those for HEV IgM and HEV IgG were 1.16 % and 26.05 %, while the HTLV-1/2 antibody positive rate was 0.04 %. The positive rates for CMV IgG, EB EA-IgG and HEV IgG in hospitalized patients before transfusion were higher than in volunteer blood donors, and the difference was statistically significant (P < 0.05). The overall co-infection rate was 0.29 %. The positive rates for EB VCA-IgM in the males were significantly higher than in females, and EB VCA-IgM and HEV IgG prevalence varied significantly by age. CONCLUSION Our data demonstrate the risk of TTI exposure and TTI transmission in the Zhejiang population, which poses a threat to blood safety. It is hoped that expansion of pathogen categories (CMV, EBV, HEV and HTLV-1/2) and blood screening programs will contribute to the future adoption of scientific blood transfusion methods.
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Affiliation(s)
- Lin Mengjiao
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Xu Yushan
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Lv Yan
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Cui Dawei
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | | | - Wang Yongjun
- Key Laboratory of Blood Safety Research of Zhejiang Province, Blood Center of Zhejiang Province, Hangzhou 310052, China
| | - Shen Cuifen
- Department of Clinical Laboratory, Huzhou Central Hospital, Huzhou 313000, China
| | - Xie Jue
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
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Madeira HS, da Silva CM, Scapini NC, de Peder LD, Teixeira JJV. Correlation between serology and nucleic acid amplification test in blood donors who are reactive for hepatitis B virus, hepatitis C and human immunodeficiency virus and evaluation of the epidemiological profile of infected people in blood centers in the State of Paraná. Saudi Pharm J 2021; 29:586-596. [PMID: 34194265 PMCID: PMC8233538 DOI: 10.1016/j.jsps.2021.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 04/13/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES To compare the results of conventional serological tests and molecular technology (NAT, Nucleic Acid Amplification Test), identify donors in the diagnostic window period, and determine the prevalence of hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV) among the samples of blood donors blocked by serological screening. METHODS A retrospective cross-sectional study was carried out by analyzing blood donor information contained in the database of 20 blood centers in Paraná, from January 2018 to December 2019. RESULTS A total of 1,496 blood bags were reactive for HBV, HCV, or HIV in serological and/or NAT tests. The 20th Regional Health (RH) Unit had the greatest number of unfit individuals with altered screening for the three infections, with a prevalence of 0.70%. The lowest number of blocked blood donors occurred in the 15th RH, with a prevalence of 0.08%. The highest prevalence of HBV occurred in the 8th RH, with a reagent serology of 0.34% and a positive NAT of 0.17%. For HCV, the prevalence for reagent serology was 0.28%, while that for NAT was 0.02%, which occurred in the 20th RH. For HIV and for NAT, the prevalence of blood donors with positive serology occurred in the 20th RH, at 0.25% and 0.04%, retrospectively. The 13th RH had the highest prevalence of HIV in relation to NAT, that is, conventional serology in concomitance with NAT technology, at 0.07%. During the 2-year period, only 1 reactive donor in the 9th was found for NAT (HBV), in a diagnostic window. CONCLUSION In Paraná's blood centers, the inability to donate due to HBV, HCV, and HIV, occurred mainly in initial donors, men, those with >8 years of education, aged 16-45 years, married, and O positive. The most affected regions were located in the west and northwest of Paraná. Most of the results showed a discrepancy between the methodologies used.
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Affiliation(s)
- Heloise Skiavine Madeira
- Clinical Analyses Laboratory, University Center of Assis Gurgacz Foundation, Cascavel, Paraná, Brazil
| | - Claudinei Mesquita da Silva
- Clinical Analyses Laboratory, University Center of Assis Gurgacz Foundation, Cascavel, Paraná, Brazil
- Post-Graduate Program in Health Sciences, Maringá State University, Maringá, Paraná, Brazil
| | | | - Leyde Daiane de Peder
- Clinical Analyses Laboratory, University Center of Assis Gurgacz Foundation, Cascavel, Paraná, Brazil
- Post-Graduate Program in Biosciences and Physiopathology, Maringá State University, Maringá, Paraná, Brazil
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Patel K, Zhang A, Zhang MH, Bunachita S, Baccouche BM, Hundal H, Lavado LK, Agarwal A, Malik P, Patel UK. Forty Years Since the Epidemic: Modern Paradigms in HIV Diagnosis and Treatment. Cureus 2021; 13:e14805. [PMID: 34094761 PMCID: PMC8172004 DOI: 10.7759/cureus.14805] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 05/02/2021] [Indexed: 12/29/2022] Open
Abstract
Human immunodeficiency virus (HIV) is a viral infection that, when transmitted through the exchange of certain bodily fluids, destroys various immune cells and contributes to an overall weakened immune system. If left untreated, HIV progresses to acquired immunodeficiency syndrome (AIDS) - a chronic, life-threatening condition that puts patients at risk for opportunistic infections. Since the emergence of HIV nearly a century ago, the world has seen tremendous advances in elucidating its pathology and progression. These advances have been accompanied by an increased understanding of how subsequent effects and symptoms manifest in afflicted individuals. These discoveries, coupled with the ever-improving technologies and methodologies used for detection and treatment, provide the scientific and medical community with a solid grasp of HIV. Despite this significant headway, there is still much progress to be made; medical advances have allowed people with HIV to manage their disease and live a longer, healthier life, but a definite cure is yet to be found. Thus, the following literature review serves as both an extensive compendium of our current understanding of HIV - its pathology, testing/detection, repercussions, and treatment - and an acknowledgement of the areas that still require further research.
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Affiliation(s)
- Karan Patel
- Medicine, Cooper Medical School of Rowan University, Camden, USA
| | - Alex Zhang
- Medicine, Cooper Medical School of Rowan University, Camden, USA
| | - Michelle H Zhang
- Psychological & Brain Sciences and Biology, Johns Hopkins University, Baltimore, USA
| | - Sean Bunachita
- Molecular and Cellular Biology, Johns Hopkins University, Baltimore, USA
| | | | - Henna Hundal
- Max Bell School of Public Policy, McGill University, Montreal, CAN
| | | | | | - Preeti Malik
- Public Health, Icahn School of Medicine at Mount Sinai, New York, USA
- Neurology, Massachusetts General Hospital, Boston, USA
| | - Urvish K Patel
- Public Health and Neurology, Icahn School of Medicine at Mount Sinai, New York, USA
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Payandeh M, Zamanian MH, Nomanpour B, Farhadi MS, Janbakhsh A, Rostamian M, Elahi A, Jafari S, Dehghannejad M. Survey of HCMV in allogenic and autologous stem cell transplantation by real-time PCR in Kermanshah, west of Iran. Infect Agent Cancer 2021; 16:8. [PMID: 33531035 PMCID: PMC7856721 DOI: 10.1186/s13027-021-00349-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/27/2021] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Human Cytomegalovirus (HCMV) is the most important viral pathogen in people undergoing bone marrow transplantation (BMT). HCMV detection in the early stages makes is possible to save the patients' lives through immediate and timely treatment. The aim of this study was to investigate the status of HCMV using the real-time PCR method in BMT patients in Kermanshah, west of Iran. METHODS HCMV monitoring was done in 120 patients who underwent BMT, 38 allogeneic cases and 82 autologous cases, using the ELISA serology test before transplantation. The participants were followed up 100 days after transplantation for HCMV detection in blood samples using real-time PCR. Preemptive therapy started with Ganciclovir and Foscarnet when the viral load was > 200 HCMV DNA copies/ml. RESULTS Despite preemptive therapy, infection recurred in less than 1 month. HCMV recurred more frequently in patients undergoing allogenic transplation versus those receiving autologous transplantation. Recurrence was seen in 5 patients receiving allogenic transplantation. HCMV recurrence occurred in five patients with allogeneic transplantation. Twelve patients undergoing allogeneic or autologous transplantation (83%) and a virus load of > 1000 copies/ml showed HCMV-related symptoms. Three patients died, two due to HCMV-related pneumonia and the other one due to a fungal infection. CONCLUSION Real-time PCR may be a useful method for quantification and monitoring of HCMV recurrence and may be helpful in choosing more efficient HCMV preemptive treatment in BMT recipients.
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Affiliation(s)
- Mehrdad Payandeh
- Hematology and Medical Oncology Dept., Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hossein Zamanian
- Infectious Diseases Dept., School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Bizhan Nomanpour
- Microbiology Dept., Medical school of Kermanshah, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Alireza Janbakhsh
- Infectious Diseases Dept., School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mosayeb Rostamian
- Infectious Diseases Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Azam Elahi
- Clinical Research Development Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Somayeh Jafari
- Clinical Research Development Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Dehghannejad
- Medical School of Kermanshah, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Xu T, Yi ZM, Luo JM, Yu HL, Fan YH, Lu H, Zhao SM, Jiang TL. Prevalence and trends of transfusion-transmittable infections among blood donors in Southwest China. J Public Health (Oxf) 2020; 41:55-61. [PMID: 29351630 DOI: 10.1093/pubmed/fdx189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 12/25/2017] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The high prevalence of transfusion-transmitted infections (TTIs) is causing serious harm to human health worldwide. The aim of this research was to assess the prevalence and influencing factors of TTIs in Southwest China. METHODS A retrospective study of blood donor records from January 2008 to December 2015 was conducted. All samples were screened for HBV, HCV, HIV and syphilis. The donor's data was recorded and analyzed statistically using SPSS software. RESULTS We revealed that the prevalence of TTIs showed a decreasing trend from 2.39 to 1.98%, and this was slightly lower than that in other regions of China. Syphilis infection was the most serious issue among blood donors in Southwest China, which demonstrated a significantly higher rate than that in other areas of China. The high infection rate of the female and farmer groups in rural regions is worth noting. The logistic regression model showed that age, occupation and donor category was the influential factors for TTIs. CONCLUSIONS The overall prevalence of TTIs demonstrated a decreasing trend from 2008 to 2015 in Southwest China, but there is still a sufficient threat to blood safety, and more efforts are needed to further guarantee blood safety in China.
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Affiliation(s)
- Ting Xu
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Zhong-Mei Yi
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Jun-Mei Luo
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - He-Lian Yu
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Ya-Han Fan
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Hua Lu
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Shu-Ming Zhao
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Tian-Lun Jiang
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Street, Shapingba District, Chongqing, China
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Eren C. An analysis on HBsAg, Anti-HCV, Anti-HIV½ and VDRL test results in blood donors according to gender, age range and years. PLoS One 2019; 14:e0219709. [PMID: 31536507 PMCID: PMC6752833 DOI: 10.1371/journal.pone.0219709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 06/29/2019] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE Blood transfusion is the most frequently used and life-saving therapeutic procedure today. Transmission of virus, bacteria and parasitic microorganisms may occur due to transfusion (Transfusion transmitted infections-TTIs). Hepatitis B and C, human immunodeficiency virus (HIV) and syphilis (Treponema pallidum) bear the risk of transmission by transfusion. Hepatitis B surface antigen (HBsAg), anti-HCV, anti-HIV½ and syphilis antibody (VDRL: Venereal Disease Research Laboratory) are routinely controlled in all donated blood samples. The aim of the present study was to analyze the seroprevalence rates of blood donors through screening test results according to duration, age range and gender. MATERIAL AND METHODS Data of all blood donors obtained from blood Centre of Marmara University Pendik Training and Research Hospital between January 2013 and October 2018 were analyzed retrospectively. Serum samples of the donors were analyzed for HBsAg, anti-HCV, anti-HIV½ and VDRL. Test results of 114.240 donors were scanned. Gender, age range and distribution by years of these donors were analyzed. According to age distribution of donors were divided into 4 groups. RESULTS There were 114.240 participants including 106.153 (92.9%) males and 8.087 (7.1%) females. The positivity rate of HBsAg was detected 0.4% (36/8087) in females and 0.5% (500/106.153) in males. The positivity rate of anti-HCV was detected 0.4% (32/8.087) in females and 0.3% (344/106.153) in males. The positivity rate of anti HIV½ was 0.1% (9/8.087) in females and 0.1% (92/106.153) in males whereas the positivity rate of VDRL was 0.5% (41/8.087) in females and 0.3% (362/ 106.153) in males. Positivity rate for HBsAg and HCV were lower in the cases between 18 and 30 years of age. The positivity rates for anti-HIV½ was not significantly different according to the age range. Positivity rate for VDRL was higher in the cases at 51 years of age and older. CONCLUSION No difference was found between men and women in terms of HBsAg, anti-HCV and anti-HIV½positivity. However, VDRL test positivity was significantly higher in female participants. Furthermore, HBsAg, anti-HCV and VDRL positivity rates increased by age.
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Affiliation(s)
- Canan Eren
- Marmara University Pendik Training and Research Hospital, Medical Microbiology and Blood Centre, Pendik, Istanbul
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Cao WW, Zhou RR, Ou X, Shi LX, Xiao CQ, Chen TY, Tan H, Fan XG, Li BJ, Li N. Prevalence of hepatitis B virus, hepatitis C virus, human immunodeficiency virus and Treponema pallidum infections in hospitalized patients before transfusion in Xiangya hospital Central South University, China from 2011 to 2016. BMC Infect Dis 2018; 18:145. [PMID: 29606088 PMCID: PMC5879580 DOI: 10.1186/s12879-018-3051-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 03/20/2018] [Indexed: 01/17/2023] Open
Abstract
Background Human immunodeficiency virus (HIV), hepatitis B virus (HBV), hepatitis C virus (HCV) and Treponema pallidum (TP) infections are considered classic transfusion-transmissible infections (TTIs). Few data are available about the prevalence of TTIs in patients before blood transfusion in China. This study aimed to investigate the seroprevalence of four TTIs among patients before blood transfusion in Xiangya Hospital Central South University, China. Methods From 2011 to 2016, 442,121 hospitalized patients before possible blood transfusion were tested for hepatitis B surface antigen (HBsAg), anti-HCV, syphilis antibody (anti-TP) and anti-HIV. Results Of the 442,121 patients, the overall positivity of the four TTI serum markers was 15.35%. The positive rates of HBsAg, anti-HCV, anti-HIV and anti-TP were 10.98, 1.43, 0.16 and 2.78%, respectively. TTI serum markers showed a significant difference by gender, with positive rates of 17.98% for males and 12.79% for females. The prevalence of TTI serum markers varied significantly by age. The overall co-infection rate was 0.63%, and the top three multiple infections were HBV-TP, HBV-HCV, and HCV-TP. The co-infection rates of HBV-TP and HBV-HCV showed a significant decrease from 2011 to 2016, while the rates of other co-infections remained stable. Conclusions The prevalence of TTIs in patients before blood transfusion is much higher compared to that in blood donors in the region. The infection rates of HIV and TP increased, and the infection rate of HBsAg decreased in recent years. Electronic supplementary material The online version of this article (10.1186/s12879-018-3051-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wei-Wei Cao
- Department of Blood Transfusion of Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Rong-Rong Zhou
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, China
| | - Xinghua Ou
- Center for Disease Prevention and Control of Changsha, Changsha, China
| | - Ling-Xi Shi
- Department of Blood Transfusion of Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Chao-Qi Xiao
- Department of Blood Transfusion of Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Ting-Yin Chen
- Department of Information of Xiangya Hospital, Central South University, Changsha, China
| | - Hua Tan
- Center for Disease Prevention and Control of Kaifu District, Changsha, China
| | - Xue-Gong Fan
- Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, China
| | - Bi-Juan Li
- Department of Blood Transfusion of Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China
| | - Ning Li
- Department of Blood Transfusion of Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan Province, China.
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Enhanced opsonisation of Rhesus D-positive human red blood cells by recombinant polymeric immunoglobulin G anti-G antibodies. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2017; 16:200-208. [PMID: 28686149 DOI: 10.2450/2017.0176-16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 03/15/2017] [Indexed: 11/21/2022]
Abstract
BACKGROUND Anti-RhD antibodies (anti-D) are important in the prophylaxis of haemolytic disease of the foetus and newborn (HDFN) due to RhD incompatibility. Current preparations of anti-D are sourced from hyperimmune human plasma, so its production carries a risk of disease and is dependent on donor availability. Despite the efforts to develop a monoclonal preparation with similar prophylactic properties to the plasma-derived anti-D, no such antibody is yet available. Here we studied the agglutinating, opsonic and haemolytic activities of two recombinant polymeric immunoglobulins (Ig) against the G antigen of the Rh complex. MATERIALS AND METHODS Recombinant polymeric anti-G IgG1 (IgG1μtp) and IgG3 (IgG3μtp) were produced in vitro, purified by protein G-affinity chromatography, and analysed by gel electrophoresis. Their agglutinating, opsonic and haemolytic activities were evaluated using haemagglutination, erythrophagocytosis, and complement activation assays. RESULTS The recombinant IgG1μtp and IgG3μtp anti-G antibodies ranged from 150,000 to 1,000,000 Da in molecular weight, indicating the formation of polymeric IgG. No complement activation or haemolytic activity was detected upon incubation of RhD-positive red-blood cells with the polymeric anti-G IgG. Both polymers were better opsonins than a prophylactic preparation of plasma-derived anti-D. DISCUSSION The enhanced opsonic properties of the polymeric anti-G IgG1μtp and IgG3μtp could allow them to mediate the clearance of RhD-positive red blood cells from circulation more efficiently than natural or other synthetic prophylactic anti-D options. Their inability to induce complement-mediated haemolysis would be prophylactically convenient and is comparable in vitro to that of the available plasma-derived polyclonal anti-D preparations. The described properties suggest that polymeric antibodies like these (but with anti-D specificity) may be testable candidates for prophylaxis of HDFN caused by anti-D.
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Shander A, Bracey AW, Goodnough LT, Gross I, Hassan NE, Ozawa S, Marques MB. Patient Blood Management as Standard of Care. Anesth Analg 2016; 123:1051-3. [DOI: 10.1213/ane.0000000000001496] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wagner T, Pabst MA, Leitinger G, Reiter U, Kozma N, Lanzer G, Huppertz B. Impact of constant storage temperatures and multiple warming cycles on the quality of stored red blood cells. Vox Sang 2013; 106:45-54. [PMID: 23909508 DOI: 10.1111/vox.12074] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 07/02/2013] [Accepted: 07/04/2013] [Indexed: 11/26/2022]
Abstract
BACKGROUND Red blood cells (RBCs) are routinely stored in liquid state at temperatures below 6°C, and RBC unit core temperature should not exceed 10°C during transport. Since the critical temperature of 10°C was chosen mostly arbitrarily, this study investigated the effect of both constant temperature settings as well as multiple rewarming cycles on stored RBCs with respect to morphology, biochemical parameters and haemolysis. MATERIALS AND METHODS Buffy coat-depleted filtered RBCs were used as standard products. RBCs were stored at 1-6°C (reference group, n = 12), 13 and 22°C (test groups, n = 12 each) or stored at 1-6°C and warmed up five times to 10, 13, or 22°C for a period of 24 h each. Various biochemical parameters were measured weekly. RBCs were further investigated using electron microscopy. RESULTS Red blood cells stored constantly at 13 or 22°C showed stable haemolysis rates until day 28 and day 14, respectively. RBCs stored at 1-6°C with five warming-up periods to 10, 13 or 22°C each lasting 24 h (total 120 h) did not exceed the limit of the haemolysis rate at the end of storage. Differently shaped erythrocytes were found in all samples, but more crenate erythrocytes appeared after 42 days of storage independent of temperature profiles. CONCLUSION Red cells can be kept at constant temperatures above 6°C without apparent harmful effects at least until day 14, whereas multiple warming cycles for no longer than 24 h at 10, 13 or 22°C with subsequent cooling do not cause quality loss as assessed using the in vitro assays employed in this study.
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Affiliation(s)
- T Wagner
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Graz, Graz, Austria
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Behr-Gross ME, Heiden M, Norda R. Contributions du comité directeur de transfusion sanguine du Conseil de l’Europe à la détermination des règles de sélection des donneurs de sang et de composants sanguins et à l’étude des conduites sexuelles ayant un impact sur la sécurité transfusionnelle. Transfus Clin Biol 2013; 20:127-38. [DOI: 10.1016/j.tracli.2013.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
BACKGROUND Needle stick injuries are associated with a risk of infection. The aim of this study was to collate the reasons for the failure to carry out prophylactic measures from the perspective of those affected. METHODS An anonymous internet questionnaire was designed to record the experiences of health care workers at the University Hospital Rostock with secondary infection prophylaxis after needle stick injuries. RESULTS During the investigation period 106 questionnaires were returned. There were deficiencies in the acceptance of prophylactic measures due to job-associated lack of time and social pressure. CONCLUSION The study suggests reorganization of work-flows and additional educational measures about the necessity of prophylactic procedures after needle stick injuries.
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Ji ZH, Li CY, Lv YG, Cao W, Chen YZ, Chen XP, Tian M, Li JH, An QX, Shao ZJ. The prevalence and trends of transfusion-transmissible infectious pathogens among first-time, voluntary blood donors in Xi'an, China between 1999 and 2009. Int J Infect Dis 2012. [PMID: 23195637 DOI: 10.1016/j.ijid.2012.10.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES The prevalence of infectious diseases is increasing in developing countries, and this may threaten the biological safety of donated blood. This study analyzed trends in the prevalence of transfusion-transmissible infectious pathogens among Chinese, first-time, voluntary blood donors from 1999 to 2009 to evaluate the potential for disease transmission. METHODS From 1999 to 2009, all first-time donors at the Xi'an Blood Service (XBS) were screened for hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV), and syphilis infections using enzyme-linked immunosorbent assays (ELISA); results were confirmed using alternative commercial kits. The prevalence and temporal trends were analyzed using the Cochran-Armitage trend test and other appropriate methods. RESULTS From 1999 to 2009, 263 299 first-time blood donors were analyzed. The overall prevalence rates were 1.16% for HBV, 0.51% for HCV, 0.02% for HIV, and 0.31% for syphilis. There was a significant decrease in the trend for HBV and HCV infections, while a significant increase was found for syphilis. The prevalence of HIV infection remained low and stable during the study period. CONCLUSIONS These findings suggest that HBV infection is the primary threat to blood safety, while the increasing prevalence of syphilis might also be a potential threat.
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Affiliation(s)
- Zhao-Hua Ji
- Department of Epidemiology, School of Public Health, The Fourth Military Medical University, No. 17, Changle West Road, Xi'an, China 710032
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15
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Wagner B, Grabein B. 'Sterility Testing of Blood Components and Advanced Therapy Medicinal Products' (Munich, April 29, 2010) Organized by the DGTI Section 'Safety in Hemotherapy' - Meeting Report. Transfus Med Hemother 2012; 38:334-336. [PMID: 22670121 DOI: 10.1159/000331397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 08/02/2011] [Indexed: 11/19/2022] Open
Abstract
Neither screening method completely detects all clinically relevant bacterial contaminations. The effect of sampling time and volume as well as standardization of the assay applied has also to be taken into account. Therefore, minimizing the risk of contamination during manufacture by measures such as donor selection, skin disinfection, division, and processing within closed systems remains crucial. In this context new concepts in sterility testing, especially with instable advanced therapy medicinal products (ATMPs), are needed as well as reassessment of pathogen inactivation techniques. At present hemovigilance data indicate that shortening the shelf life of platelet concentrates as introduced in Germany 2008 reduced the risk of transfusion-transmitted bacterial infections to the same extent as bacterial screening as done in Canada or the Netherlands. The evolving methodological progress, e.g. by standardizing culture methods or enhancing detection systems, requires careful follow-up in parallel to hemovigilance data in order to ensure optimal bacterial safety in hemotherapy.
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Affiliation(s)
- Beate Wagner
- Abteilung Tranfusionsmedizin und Hämostaseologie, Klinikum der Universität München, Germany
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16
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Yong-Lin Y, Qiang F, Ming-Shun Z, Jie C, Gui-Ming M, Zu-Hu H, Xu-Bing C. Hepatitis B surface antigen variants in voluntary blood donors in Nanjing, China. Virol J 2012; 9:82. [PMID: 22500577 PMCID: PMC3342217 DOI: 10.1186/1743-422x-9-82] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Accepted: 04/14/2012] [Indexed: 02/06/2023] Open
Abstract
Background Hepatitis B virus (HBV) is still one of the serious infectious risks for the blood transfusion safety in China. One plausible reason is the emergence of the variants in the major antigenic alpha determinant within the major hydrophilic region (MHR) of hepatitis B surface antigen (HBsAg), which have been assumed to evade the immune surveillance and pose a challenge to the disease diagnosis. It is well documented that some commercial ELISA kits could detect the wild-type but not the mutant viruses. The high prevalence of HBV in China also impaired the application of nucleic acid testing (NAT) in the improvement of blood security. Molecular epidemiological study of HBsAg variations in China is still limited. This study was designed to identify the prevalence of mutations in the HBsAg in voluntary blood donors in Nanjing, China. Methods A total of 20,326 blood units were enrolled in this study, 39 donors were positive for HBV S gene in the nested-PCR. Mutations in the major hydrophilic region (MHR; aa 99-169) were identified by direct sequencing of S region. Results Among of 20,326 blood units in the Red Cross Transfusion Center of Nanjing from October 2008 to April 2009, 296 samples (1.46%, 296/20,326) were HBsAg positive in the 2 successive rounds of the ELISA test. In these HBsAg positive units, HBV S gene could be successfully amplified from 39 donors (13.18%, 39/296) in the nested-PCR. Sequence analysis revealed that 32 strains (82.1%, 32/39) belong to genotype B, 7 strains (17.9%, 7/39) to genotype C. Besides well known G145R, widely dispersed variations in the MHR of S region, were observed in 20 samples of all the strains sequenced. Conclusions HBV/B and HBV/C are dominant in Nanjing, China. The mutations in the MHR of HBsAg associated with disease diagnosis are common.
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Schlagenhauf A, Kozma N, Leschnik B, Wagner T, Muntean W. Thrombin receptor levels in platelet concentrates during storage and their impact on platelet functionality. Transfusion 2012; 52:1253-9. [PMID: 22233332 DOI: 10.1111/j.1537-2995.2011.03475.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Quality control of platelet (PLT) concentrates is challenging, due to PLT lesions, which are difficult to detect with routine methods. The search for reliable PLT lesion biomarkers is focused on the role of PLTs in primary hemostasis. PLT transfusions also have a significant impact on secondary hemostasis. In this phase, responsiveness of PLTs to small amounts of thrombin is crucial. PAR1 and PAR4 are protease-activated receptors and are responsible for thrombin reactivity of human PLTs. This study should elucidate if levels of those two receptors are changing in PLT concentrates during storage and if those changes have an impact on PLT aggregation and support of thrombin generation. STUDY DESIGN AND METHODS PLT concentrates from buffy coat preparations were stored in SSP+ solution for 9 days at 22±2°C on a horizontal flatbed agitator, and samples were taken daily for analysis. PAR1 and PAR4 levels were evaluated using Western blot analysis. PLT aggregation was measured using Born aggregometry and specific PAR1 or PAR4 agonists. Thrombin generation was measured using calibrated automated thrombography. RESULTS Levels of both receptors (PAR1 and PAR4) started to decrease after 5 days of storage. PAR1-mediated PLT aggregation remained constant, whereas PAR4-mediated PLT aggregation decreased with storage time. Rate of thrombin generation was accelerated after 5 days of storage. CONCLUSION Decreasing levels of PARs in PLT concentrates after 5 days of storage influenced PAR4-mediated, but not PAR1-mediated, aggregation. Thrombin generation with senescent PLTs was increased, which may be attributed to other mechanisms promoting increased phosphatidylserine exposure.
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Affiliation(s)
- Axel Schlagenhauf
- Department of General Pediatrics and Adolescent Medicine, Medical University of Graz, Graz, Austria
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Kozma N, Speletz H, Reiter U, Lanzer G, Wagner T. Impact of 13.56-MHz radiofrequency identification systems on the quality of stored red blood cells. Transfusion 2011; 51:2384-90. [DOI: 10.1111/j.1537-2995.2011.03169.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Frey BM, Schlenke P. Safeguards in Blood Supply: A National and European Challenge. ACTA ACUST UNITED AC 2010; 37:109-110. [PMID: 20737015 DOI: 10.1159/000315041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Beat M Frey
- Blood Transfusion Service SRC, Schlieren-Zürich, Switzerland
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