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Fiseha T, Alemayehu E, Mohammed O, Gedefie A, Adamu A, Tamir Z, Gebreweld A. Reference Intervals of Haematological Parameters for Apparently Healthy Adults in Northeast Ethiopia. Int J Gen Med 2023; 16:5309-5321. [PMID: 38021065 PMCID: PMC10660733 DOI: 10.2147/ijgm.s430751] [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: 07/15/2023] [Accepted: 11/10/2023] [Indexed: 12/01/2023] Open
Abstract
Background Clinical laboratory reference intervals play a vital role in evaluating overall well-being, tracking the progression of diseases, and detecting potential harmful effects and complications. Despite evidence revealing disparities, many African nations currently rely on reference intervals for blood analysis obtained mainly from Western populations. This practice increases the risk of misidentifying and misdiagnosing healthy individuals. The aim of this study was to establish common hematological parameters reference intervals for healthy adults in Northeast Ethiopia. Methods This community-based cross-sectional study consisted of 328 individuals who were presumed to be in good health. To assess their blood-related characteristics, blood samples were collected and analyzed using the advanced Dirui BF-6500 analyzer, along with serological testing. In accordance with guidelines provided by the Clinical and Laboratory Standards Institute, the study employed a non-parametric approach to calculate the medians and 95% confidence intervals. To explore potential variations between males and females, a statistical test known as the Mann-Whitney U-test was used to compare the reference intervals. Results The established reference intervals were: white blood cells 3.5-11.3×109/L; red blood cells 4.0-6.1×1012/L; hemoglobin 11.2-17.5g/dL; hematocrit 35.4-52.0%; MCV 77.9-93.8fl; MCH 24.7-32.0pg; MCHC 306-349g/L; RDW-CV 12.1-13.8% and platelet 131-391×109/L. The reference values of monocytes, eosinophils, red blood cells, hemoglobin, hematocrit and RDW-CV in males were higher than females, while females had significantly higher platelet counts compared to males. The reference intervals discovered differed from the reference intervals now in use, those mentioned in earlier research in Ethiopia or other African nations, as well as those conducted on Western populations. Conclusion In the adult demographic of Northeast Ethiopia, specific reference intervals for commonly observed hematological parameters were established, tailored to the local community. Consequently, these reference intervals hold the potential to enhance informed decision-making within this population, by providing valuable guidance when interpreting laboratory test outcomes.
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Affiliation(s)
- Temesgen Fiseha
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Ermiyas Alemayehu
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Ousman Mohammed
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Alemu Gedefie
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Aderaw Adamu
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Zemenu Tamir
- Department of Medical Laboratory Sciences, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Angesom Gebreweld
- Department of Medical Laboratory Science, College of Health Sciences, Mekelle University, Mekelle, Ethiopia
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Zhong R, Wu X, Liu Z, He Z, Zhang X, Liu J, Cao Y, Wang H. A study on the correlation between hemoglobin concentration and the storage quality of suspended red blood cells prepared from the whole blood of Tibetan male residents. Front Med (Lausanne) 2023; 9:1062778. [PMID: 36743680 PMCID: PMC9895097 DOI: 10.3389/fmed.2022.1062778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/28/2022] [Indexed: 01/21/2023] Open
Abstract
Background Previous studies reported that the blood of Tibetans living at different altitudes may vary slightly. There is evidence that the harsh environmental conditions at high altitudes, such as low pressure and hypoxia, may affect the morphology and hemorheology of red blood cells (RBCs). Hypoxia would increase the levels of hemoglobin ([Hb]) and hematocrit (Hct), potentially increasing blood hyperviscosity and compromising blood collection and transfusions. Therefore, it is critical to investigate the in vitro storage quality of Tibetan RBCs. Objectives In this study, the in vitro quality of suspended RBCs (SRBCs) prepared from whole blood (WB) of Tibetan residents with varying Hb concentrations ([Hb]) was measured during storage, and the relationship between the major factors in RBC storage and [Hb] was studied. Materials and methods The WB of Tibetan men was divided into three groups based on [Hb] levels (group A: 120 < Hb ≤ 185 g/L; group B: 185 < Hb ≤ 210 g/L; group C: Hb > 210 g/L). The SRBCs prepared from WB were examined aseptically on days 1, 14, 21, and 35 after storage. Results [Hb] was not correlated with mean corpuscular volume (MCV), adenosine triphosphate (ATP), pH, P50, and hemolysis. There was a moderate or strong negative association between platelets (PLT) and [Hb] from days 1 to 35, and the PLT number of group C was lower than group A during storage. Group C had the highest change rates of electrolytes, glucose, and lactate, and there were moderate or strong positive correlations between lactate and [Hb] (r = 0.3772, p = 0.0045), glucose and [Hb] (r = 0.5845, p < 0.0001), Na+ and [Hb] (r = 0.3966, p = 0.0027), and K+ and [Hb] (r = 0.4885, p = 0.0002). Group B had the highest change rates of 2,3-DPG on day 35, and there was a negative correlation between 2,3-DPG and [Hb] (r = -0.4933, p = 0.0001). Conclusions These new data on the [Hb] could have implications for researchers wishing to study the storage quality of Tibetan SRBCs, particularly in the context of erythrocyte metabolism, and we propose finding a new, suitable alternative solution for plateau SRBCs, particularly the blood with [Hb] greater than 185 g/L. Our results could have important implications for researchers wishing to study the potential framework of high-altitude-induced SRBC storage lesions.
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Affiliation(s)
- Rui Zhong
- Peking Union Medical College, Institute of Blood Transfusion, Chinese Academy of Medical Science, Chengdu, Sichuan, China
| | - Xiaodong Wu
- Department of Critical Care Medicine, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu, China
| | - Zhijuan Liu
- Department of Clinical Laboratory, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - Zeng He
- Department of Biobank, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu, China
| | - Xuejun Zhang
- Peking Union Medical College, Institute of Blood Transfusion, Chinese Academy of Medical Science, Chengdu, Sichuan, China
| | - Jiaxin Liu
- Peking Union Medical College, Institute of Blood Transfusion, Chinese Academy of Medical Science, Chengdu, Sichuan, China
| | - Ye Cao
- Peking Union Medical College, Institute of Blood Transfusion, Chinese Academy of Medical Science, Chengdu, Sichuan, China,*Correspondence: Ye Cao ✉
| | - Hong Wang
- Peking Union Medical College, Institute of Blood Transfusion, Chinese Academy of Medical Science, Chengdu, Sichuan, China,Hong Wang ✉
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Yang H, Yang G, Xu M, Zhao Y, He S, Wang Q, Wen Y, Huang C, Wu J, Ren C, Yang Y, He S. Impact of high altitude on the incidence of postoperative venous thromboembolism and its genetic susceptibility: A meta-analysis and systematic review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156632. [PMID: 35691358 DOI: 10.1016/j.scitotenv.2022.156632] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 06/07/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The effect of high-altitude (HA) on venous thromboembolism (VTE) and its mechanism remains ambiguous. To clarify this, we aimed to conduct a meta-analysis and systematic review to evaluate the incidence of VTE at HA and comparatively low altitude (LA) and figure out the intrinsic risk factors such as susceptibility genes of patients with VTE at HA. METHODS We selected studies that explored the risk factors for HA and VTE by searching PubMed, Embase, and Web of Science to analyze the impact of HA on VTE. All relevant studies before August 2021 were screened using the terms ([high altitude] OR [plateau] OR [mountain]) AND ([venous thromboembolism] OR [deep vein thrombosis] OR [pulmonary embolism]). Latest studies on the gene of HA-VTE patients were also summarized and analyzed. RESULTS Fifteen studies were eventually assessed, and the overall numbers of subjects with and without VTE were 1475 and 286,926 respectively. The overall incidence of VTE, deep vein thrombosis (DVT) and pulmonary embolism (PE) in the HA group was significantly higher than that in the LA group (P < 0.01). The overall incidence of VTE, DVT and PE in the HA group was significantly higher than that in the LA group at 30 days post operation (P < 0.05, P < 0.05 and P < 0.01, respectively). At 90 days post operation, incidence of VTE and PE in the HA group was higher than that in the LA group (P < 0.01and P < 0.01, respectively), but there was no difference in the incidence of DVT (P = 0.07). Regarding endogenous factors, the analysis of genes in patients with HA-VTE revealed numerous targeted genes such as ANG, ACE, lncRNA-LINC00 659/UXT-AS1 and GP4. CONCLUSIONS We observed a significant association between HA and the overall incidence of VTE and that at 30/90 days post operation, indicating that HA may be a risk factor for VTE.
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Affiliation(s)
- Haihong Yang
- Department of Anesthesiology, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Guan Yang
- Department of Pain, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Meiling Xu
- Department of Geriatrics, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Yuanyuan Zhao
- The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Shengdong He
- The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Qiwu Wang
- The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Yi Wen
- The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Chen Huang
- The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Jianping Wu
- Department of Neurosurgery, The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Chao Ren
- The General Hospital of Western Theater Command, Chengdu 610083, China
| | - Yongxiang Yang
- Department of Neurosurgery, The General Hospital of Western Theater Command, Chengdu 610083, China.
| | - Siyi He
- Department of Cardiovascular Surgery, The General Hospital of Western Theater Command, Chengdu 610083, China.
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Zhang R, Yu X, Shen Y, Yang C, Liu F, Ye S, Du X, Ma L, Cao H, Wang Z, Li C. Correlation between RBC changes and coagulation parameters in high altitude population. ACTA ACUST UNITED AC 2019; 24:325-330. [PMID: 30669960 DOI: 10.1080/16078454.2019.1568658] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To explore the correlations between RBCs indexes and the basic coagulation parameters, and provide data for further studies on high altitude-induced thrombotic disease. METHODS A total of eligible 433 volunteers were divided into different groups according to HGB concentration and HCT, respectively. PT, APTT, TT and Fbg were measured by clotting assays. HGB content, HCT and PLT count were assessed by automated hematology analyzer. RESULTS APTT and PT were significantly higher in group 4 (high HGB or HCT groups) (p < 0.05 for all comparison) and PLT count was significantly lower in group 4 than in other groups (p < 0.01 for all comparison). APTT and PT showed negative correlations with HGB concentration (r = -0.168 and -0.165 resp.; both p < 0.01), whereas positive correlations were found between APTT and HCT, PT and HCT (r = 0.225 and 0.258, resp.; both p < 0.01). PLT, TT and Fbg showed no correlation with HGB and HCT. CONCLUSIONS HGB and HCT may not correlate with basic coagulation parameters in high altitude population, their predictive value for high altitude-induced thrombotic disease may relatively independent and this remain to be determined in further studies.
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Affiliation(s)
- Rong Zhang
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Xiaochuan Yu
- b People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture , Sichuan , People's Republic of China
| | - Yuanzhen Shen
- b People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture , Sichuan , People's Republic of China
| | - Chunhui Yang
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Fengjuan Liu
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Shengliang Ye
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Xi Du
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Li Ma
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Haijun Cao
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Zongkui Wang
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
| | - Changqing Li
- a Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College , Chengdu , People's Republic of China
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Enawgaw B, Birhan W, Abebe M, Terefe B, Baynes HW, Deressa T, Melku M. Haematological and immunological reference intervals for adult population in the state of Amhara, Ethiopia. Trop Med Int Health 2018; 23:765-773. [PMID: 29752840 DOI: 10.1111/tmi.13071] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Reference intervals (RIs) currently being used in Ethiopia are derived from western populations. Thus, this study aimed to establish locally derived haematological and immunological RIs. METHOD The study was conducted in Amhara State, Ethiopia with a total of 967 (55.2% males) participants. 56.9% of males and 43.1% of females were eligible for haematological and immunological RI determination. A non-parametric test was used for the determination of upper (97.5th percentile) and lower (2.5th percentile) reference interval limits with 95% CI. The Harris and Boyd Rule was used to determine the need of partitioning of reference intervals based on gender. RESULT The established 95% reference intervals (2.5th-97.5th percentile) were: for WBC: 3-11.2 × 109 /l; for platelet: 90-399 × 109 /l; for RBC: 4-6 × 1012 /l for males and 3.5-5.6 × 1012 /l for females; for haemoglobin: (Hgb) 12-18.9 g/dl for males and 10.7-17.5 g/dl for females; for PCV: 35.7-55.3% for males and 32.2-50.1% for females; for CD4: 400-1430 × 109 /l for males and 466-1523 × 109 /l for females; for CD4 percentage: 18-49.1% for males and 21.3-52.9% for females; for MCV: 81-100 fl; for MCH: 25.3-34.6 pg; MCHC: 28.8-36.9%; for RDW: 11.6-15.4% and for MPV: 8-12.3 fl. Males had significantly higher RBC, Hgb and PCV than females. CD4 counts and CD4 percentage were significantly higher in females. CONCLUSION The reference intervals established in this study differ from others and thus should be used for the interpretation of laboratory results in diagnosis and safety monitoring in clinical trials in Amhara.
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Affiliation(s)
- Bamlaku Enawgaw
- Department of Hematology & Immunohematology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Wubet Birhan
- Department of Immunology & Molecular Biology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Molla Abebe
- Department of Clinical Chemistry, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Betelihem Terefe
- Department of Hematology & Immunohematology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Habtamu Wondifraw Baynes
- Department of Clinical Chemistry, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Tekalign Deressa
- Department of Clinical Chemistry, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Mulugeta Melku
- Department of Hematology & Immunohematology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
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Ozarda Y, Ichihara K, Bakan E, Polat H, Ozturk N, Baygutalp NK, Taneli F, Guvenc Y, Ormen M, Erbayraktar Z, Aksoy N, Sezen H, Demir M, Eskandari G, Polat G, Mete N, Yuksel H, Vatansev H, Gun F, Akin O, Ceylan O, Noyan T, Gozlukaya O, Aliyazicioglu Y, Kahraman S, Dirican M, Tuncer GO, Kimura S, Eker P. A nationwide multicentre study in Turkey for establishing reference intervals of haematological parameters with novel use of a panel of whole blood. Biochem Med (Zagreb) 2017; 27:350-377. [PMID: 28694726 PMCID: PMC5493180 DOI: 10.11613/bm.2017.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/08/2017] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION A nationwide multicentre study was conducted to establish well-defined reference intervals (RIs) of haematological parameters for the Turkish population in consideration of sources of variation in reference values (RVs). MATERIALS AND METHODS K2-EDTA whole blood samples (total of 3363) were collected from 12 laboratories. Sera were also collected for measurements of iron, UIBC, TIBC, and ferritin for use in the latent abnormal values exclusion (LAVE) method. The blood samples were analysed within 2 hours in each laboratory using Cell Dyn and Ruby (Abbott), LH780 (Beckman Coulter), or XT-2000i (Sysmex). A panel of freshly prepared blood from 40 healthy volunteers was measured in common to assess any analyser-dependent bias in the measurements. The SD ratio (SDR) based on ANOVA was used to judge the need for partitioning RVs. RIs were computed by the parametric method with/without applying the LAVE method. RESULTS Analyser-dependent bias was found for basophils (Bas), MCHC, RDW and MPV from the panel test results and thus those RIs were derived for each manufacturer. RIs were determined from all volunteers' results for WBC, neutrophils, lymphocytes, monocytes, eosinophils, MCV, MCH and platelets. Gender-specific RIs were required for RBC, haemoglobin, haematocrit, iron, UIBC and ferritin. Region-specific RIs were required for RBC, haemoglobin, haematocrit, UIBC, and TIBC. CONCLUSIONS With the novel use of a freshly prepared blood panel, manufacturer-specific RIs' were derived for Bas, Bas%, MCHC, RDW and MPV. Regional differences in RIs were observed among the 7 regions of Turkey, which may be attributed to nutritional or environmental factors, including altitude.
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Affiliation(s)
- Yesim Ozarda
- Department of Medical Biochemistry, Uludag University School of Medicine, Bursa, Turkey
| | - Kiyoshi Ichihara
- Department of Laboratory Sciences, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Ebubekir Bakan
- Department of Medical Biochemistry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Harun Polat
- Department of Medical Biochemistry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Nurinnisa Ozturk
- Department of Medical Biochemistry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Nurcan K Baygutalp
- Department of Medical Biochemistry, Ataturk University School of Medicine, Erzurum, Turkey
| | - Fatma Taneli
- Department of Medical Biochemistry, Celal Bayar University School of Medicine, Manisa, Turkey
| | - Yesim Guvenc
- Department of Medical Biochemistry, Celal Bayar University School of Medicine, Manisa, Turkey
| | - Murat Ormen
- Department of Medical Biochemistry, Dokuz Eylul University School of Medicine, Izmir, Turkey
| | - Zubeyde Erbayraktar
- Department of Medical Biochemistry, Dokuz Eylul University School of Medicine, Izmir, Turkey
| | - Nurten Aksoy
- Department of Medical Biochemistry, Harran University School of Medicine, Urfa, Turkey
| | - Hatice Sezen
- Department of Medical Biochemistry, Harran University School of Medicine, Urfa, Turkey
| | - Meltem Demir
- Department of Medical Biochemistry, Medicalpark Hospital, Antalya, Turkey
| | - Gulcin Eskandari
- Department of Medical Biochemistry, Mersin University School of Medicine, Mersin, Turkey
| | - Gurbuz Polat
- Department of Medical Biochemistry, Mersin University School of Medicine, Mersin, Turkey
| | - Nuriye Mete
- Department of Medical Biochemistry, Dicle University School of Medicine, Diyarbakir, Turkey
| | - Hatice Yuksel
- Department of Medical Biochemistry, Dicle University School of Medicine, Diyarbakir, Turkey
| | - Husamettin Vatansev
- Department of Medical Biochemistry, Selçuk University School of Medicine, Konya, Turkey
| | - Fatma Gun
- Department of Medical Biochemistry, Selçuk University School of Medicine, Konya, Turkey
| | - Okhan Akin
- Department of Medical Biochemistry, Keçiören Teaching and Research Hospital, Ankara, Turkey
| | - Ozlem Ceylan
- Department of Medical Biochemistry, Keçiören Teaching and Research Hospital, Ankara, Turkey
| | - Tevfik Noyan
- Department of Medical Biochemistry, Ordu University School of Medicine, Ordu, Turkey
| | - Ozgul Gozlukaya
- Department of Medical Biochemistry, Ordu University School of Medicine, Ordu, Turkey
| | - Yuksel Aliyazicioglu
- Department of Medical Biochemistry, Karadeniz Teknik University School of Medicine, Trabzon, Turkey
| | - Sevim Kahraman
- Department of Medical Biochemistry, Karadeniz Teknik University School of Medicine, Trabzon, Turkey
| | - Melahat Dirican
- Department of Medical Biochemistry, Uludag University School of Medicine, Bursa, Turkey
| | - Gul Ozlem Tuncer
- Department of Medical Biochemistry, Uludag University School of Medicine, Bursa, Turkey
| | - Shogo Kimura
- Department of Laboratory Sciences, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Pinar Eker
- Department of Medical Biochemistry, Kuzey Laboratories, Fatih Sultan Mehmet Hospital, Istanbul
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yong M. Large Population Study for Age- and Gender- Related Variations of Platelet Indices in Southwest China Healthy Adults. ACTA ACUST UNITED AC 2015. [DOI: 10.15406/htij.2015.01.00023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Relación entre células sanguíneas y variables metabólicas en mujeres indígenas de diferentes edades que viven a gran altitud. TIP REVISTA ESPECIALIZADA EN CIENCIAS QUÍMICO-BIOLÓGICAS 2014. [DOI: 10.1016/s1405-888x(14)72085-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Isık T, Tanboga IH, Ayhan E, Uyarel H, Kaya A, Kurt M, Erdogan E, Ergelen M, Cicek G, Akgul O, Ghannadian B. Impact of altitude on predicting midterm outcome in patients with ST elevation myocardial infarction. Clin Appl Thromb Hemost 2012; 19:382-8. [PMID: 22473026 DOI: 10.1177/1076029612440165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study investigated the effects of altitude on occurrence of mid-term negative events among patients presenting with ST elevation myocardial infarction (STEMI). This study enrolled 492 patients with STEMI. 119 of those patients were living at an intermediate altitude (1960 m, Group I) and 373 were living at sea level (0 m, Group II). There was no significant difference between the different altitude groups in terms of the incidence of cardiac death, urgent target vessel revascularization (TVR), stroke/transient ischemic attack (TIA) and composite endpoints. However, Group I had a significantly higher reinfarction incidence when compared with the Group II. Independent predictors of 6-month composite endpoints were history of statin use, presentation with acute stent thrombosis, peak CK-MB level, success of procedure, Killip classification, and left ventricular ejection fraction. In conclusion, altitude status and altitude-related hematologic changes had no influence over the mid-term outcomes in STEMI patients treated with percutaneous intervention.
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Affiliation(s)
- Turgay Isık
- Department of Cardiology, Balikesir University, School of Medicine, Balıkesir, Turkey.
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Vij AG. Effect of prolonged stay at high altitude on platelet aggregation and fibrinogen levels. Platelets 2009; 20:421-7. [DOI: 10.1080/09537100903116516] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lehmann T, Mairbäurl H, Pleisch B, Maggiorini M, Bärtsch P, Reinhart WH. Platelet count and function at high altitude and in high-altitude pulmonary edema. J Appl Physiol (1985) 2006; 100:690-4. [PMID: 16421278 DOI: 10.1152/japplphysiol.00991.2005] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Platelet aggregation is the key process in primary hemostasis. Certain conditions such as hypoxia may induce platelet aggregation and lead to platelet sequestration primarily in the pulmonary microcirculation. We investigated the influence of high-altitude exposure on platelet function as part of a larger study on 30 subjects with a history of high-altitude pulmonary edema (HAPE) and 10 healthy controls. All participants were studied in the evening and the next morning at low altitude (450 m) and after an ascent to high altitude (4,559 m). Platelet count, platelet aggregation (platelet function analyzer PFA100; using epinephrine and ADP as activators), plasma soluble P (sP)-selectin, and the coagulation parameters prothrombin fragments 1+2 and thrombin-antithrombin complex were measured. High-altitude exposure decreased the platelet count, shortened the platelet function analyzer closure time by approximately 20%, indicating increased platelet aggregation, increased sP-selectin levels to approximately 250%, but left plasma coagulation unaffected. The HAPE-susceptible subjects were prophylactically treated with either tadalafil (a phosphodiesterase 5 inhibitor), dexamethasone, or placebo in a double-blind way. Subgroup analyses between these different treatments and comparisons of the seven placebo-treated individuals developing HAPE and controls revealed no differences in platelet count, platelet aggregation, or sP-selectin values. We conclude that exposure to high altitude activates platelets, which leads to platelet aggregation, platelet consumption, and decreased platelet count. These effects are, however, not more pronounced in individuals with a history of HAPE or actually suffering from HAPE than in controls and therefore may not be a pathophysiological mechanism of HAPE.
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Affiliation(s)
- T Lehmann
- Dept. of Internal Medicine, Kantonsspital, CH-7000 Chur, Switzerland
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Frick M, Rinner A, Mair J, Alber HF, Mittermayr M, Pachinger O, Humpeler E, Schobersberger W, Weidinger F. Transient impairment of flow-mediated vasodilation in patients with metabolic syndrome at moderate altitude (1700 m). Int J Cardiol 2006; 109:82-7. [PMID: 15993499 DOI: 10.1016/j.ijcard.2005.05.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2005] [Revised: 04/27/2005] [Accepted: 05/28/2005] [Indexed: 11/18/2022]
Abstract
BACKGROUND The influence of moderate altitude on the cardiovascular system in patients with metabolic syndrome has not been investigated sufficiently, yet. The aim of this study was to assess the effect of acute and mid-term exposure to moderate altitude (1,700 m) on endothelial function in patients with metabolic syndrome. METHODS Flow-mediated (FMD) and nitroglycerin-mediated vasodilation (NMD) were assessed in 18 patients with coronary risk factors on 5 occasions: (1) at location A (576 m), (2) on the first day at moderate altitude (location B, 1,700 m), (3) after 3 weeks at moderate altitude, (4) and (5) again at location A (6 and 16 weeks after the stay at moderate altitude, respectively). In addition, markers of lipid metabolism, serum erythropoietin and endothelin were measured. RESULTS FMD on the first day at moderate altitude was similar compared to baseline FMD at location A (7.0 +/- 3.3 vs. 7.4 +/- 4.6%; NS). A 3-week stay at moderate altitude was associated with a significant reduction in FMD (7.4 +/- 4.6 vs. 3.8 +/- 2.5%; p < 0.05) despite a decrease in baseline diameter (4.5 +/- 0.3 vs. 4.3 +/- 0.4 mm; p < 0.05). Six weeks after returning to location A, FMD was still reduced compared to baseline (4.3 +/- 2.8%; p < 0.05) and after further 16 weeks, FMD returned to baseline values (5.5 +/- 3.5%). However, metabolic parameters improved significantly. In contrast, NMD and endothelin levels remained unchanged. CONCLUSION In patients with metabolic syndrome, a sojourn of 3 weeks at moderate altitude leads to a prolonged, but reversible impairment of FMD. The discrepancy to improvement of other cardiovascular and metabolic parameters requires further investigation.
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Affiliation(s)
- Matthias Frick
- Division of Cardiology, Innsbruck Medical University, Anichstrasse 35, A-6020 Innsbruck, Austria, Europe
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Butkiewicz AM, Kemona H, Dymicka-Piekarska V, Matowicka-Karna J, Radziwon P, Lipska A. Platelet count, mean platelet volume and thrombocytopoietic indices in healthy women and men. Thromb Res 2006; 118:199-204. [PMID: 16139337 DOI: 10.1016/j.thromres.2005.06.021] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2005] [Revised: 05/19/2005] [Accepted: 06/13/2005] [Indexed: 12/01/2022]
Abstract
UNLABELLED Gender-dependent differences in platelet count have been demonstrated in few studies. In women platelet count is higher than in men, which seems to reflect different hormonal profiles or a compensatory mechanism associated with menstrual blood loss. The aim of the study was to assess platelet count, mean platelet volume and thrombocytopoietic indices in women and men. The study was conducted on healthy blood donors divided into groups: F - 60 women and M - 65 men. Platelet count and mean platelet volume were determined on a haematological analyser Advia 120, Bayer. The following thrombocytopoietic indices were measured: thrombopoietin concentration (ELISA), percentage of reticulated platelets (flow cytometry, COULTER EPICS XL) and absolute reticulated platelet count. RESULTS Higher platelet count was noted in the group of women 252.35 +/- 41.25 x 10(9)/l as compared to men 221.87 +/- 37.63 x 10(9)/l (p = 0.0002). At the same time women had lower thrombopoietin concentration 156.50 +/- 57.18 pg/ml compared to men 180.46 +/- 60.98 pg/ml, (p = 0.03). No statistically significant differences were found in the mean platelet volume, percentage of reticulated platelets or absolute reticulated platelet count between group F and M. CONCLUSIONS Platelet count is gender-dependent, being higher in women than in men. Thrombopoietin concentration is gender-dependent and is lower in women than in men. In physiological conditions, there is no correlation between platelet count and thrombopoietin concentration in women (r = -0.155) and men (r = -0.2586).
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Affiliation(s)
- Anna M Butkiewicz
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, Poland.
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