Distribution Of ABO Blood Types Research Articles

Correlation Between ABO Blood Grouping and Erythrocyte Sedimentation Rate (ESR) in Periodontal Diseases.

This study investigates the relationship between erythrocyte sedimentation rate (ESR) and ABO blood grouping in the context of periodontal disorders. Periodontal diseases, chronic inflammatory conditions that damage the tissues supporting teeth, can lead to tooth loss if left untreated. ESR, a common hematological test indicating systemic inflammation, has been linked to the severity of periodontal disease. ABO blood grouping, a hereditary trait, is linked to a higher risk of various oral and systemic diseases. By synthesizing existing research, this study explores the potential of the connection between blood type ABO and ESR levels in individuals with periodontal disorders, examining studies that assess the distribution of ABO blood types and corresponding ESR values among periodontal patients.

A retrospective study of the proportional distribution of ABO blood types in SARS-CoV-2 patients in Jodhpur (western India).

Coronavirus disease 2019 (COVID-19) has infected millions of people globally. Many recent studies have suggested that the ABO blood type may contribute to COVID-19 infection immunopathogenesis. We aimed to determine the proportional distribution of COVID-19 infection among ABO blood types. This retrospective research was conducted in the city of Jodhpur (Rajasthan), India. The research involved 1140 COVID-19 patients, whose medical records were available in blood banks. The data was evaluated statistically using IBM SPSS 26. The proportion of blood group B among infected patients was highest (37.36%). Among all the cases, blood group A had the highest odds ratio of 1.062 (CI 95%, 0.92-1.21, p = 0.412). All versus one blood group analysis also showed that blood group A (odds ratio = 1.062 [CI 95%, 0.92-1.22] p = 0.412) was more likely to be infected with COVID-19 than the remaining blood groups. In the year 2021, blood group B had the highest risk of COVID-19 infection (odds ratio = 1.138). Based on our findings, the blood groups A and B are more likely to be infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The overall average age for COVID-19 infection was lower, and the number of incidences in female patients was higher in 2021, relative to 2020. We found no evident relationship between COVID-19 vulnerabilities and blood group. A summary of the research is presented in Supplementary Figure 1.

Relation of Immune Thrombocytopenia and Blood Group: A Retrospective Single Center Study

Aim: Although blood group antigens were initially identified as erythrocyte surface antigens and their significance was mainly ascribed to serology, it soon became evident that these antigens are widely distributed in human tissues such as platelets. Immunthrombocytopenia (ITP) is a common autoimmune disorder characterized by a low platelet count. In our study, we investigated the relationship between ABO and Rhesus (Rh) blood groups and primary ITP.
 Material and Methods: A retrospective study was conducted at our center with 304 patients diagnosed with primary ITP and 491 blood donors.
 Results: ABO phenotype in patients group A, B, O, AB were 42.8%, 14.1%, 34.9%, 8.2%, respectively and 51.6%, 8.1%, 27.9%, 12.4% in the control group, respectively. Rh phenotype in patients group positive or negative 87.5%, 12.5 % respectively and 88.8%, 11.2% in the control group, respectively. A total of 304 patients with primary ITP, consisting of 203 (66.8%) females, and 101(33,2%) males were included in this study. The mean age was 49,5 ±18 years. There was no significant difference in the distribution of ABO blood types and Rh factor by gender (respectively p=0.176, p= 0.195).
 Conclusion: In our study, no significant difference was found between the blood group distribution in the population and the blood group distribution of patients diagnosed with primary ITP.

Efficient use of immunosuppressants for kidney transplants

A recent development of immunosuppressive protocols (or simply, suppressants) offers a new option to patients suffering from end-stage renal disease: transplants from biologically incompatible donors. Suppressants are currently being used for direct transplants within patient–donor pairs, but they can be utilized more efficiently when combined with kidney exchanges. To assess the welfare gains from doing so, we introduce the “minimum chains algorithms” for different sizes of feasible exchanges. Using these algorithms, we calculate the minimal number of suppressants needed for transplants for a group of patient–donor pairs. Our simulation results show that (i) a significant reduction of suppressants can be achieved by implementing this proposal, (ii) it suffices to arrange 2-way exchanges for the best use of suppressants, and (iii) the welfare gain varies with the ABO blood-type distribution, and the gain in Korea appears to be larger than that in the United States. Finally, we assess the value (or cost) of each patient–donor pair by comparing the outcomes of the pools with and without the pair.

Distribution of ABO and Rh-D Blood Group Antigens Among Blood Donors in the Amhara Regional State, Ethiopia.

BackgroundThe ABO and Rh blood group systems are the most commonly used blood group systems in clinical settings. They are clinically significant for blood transfusion, organ transplantation, genetic studies, forensic determinations, and medico-legal issues. Therefore, this study aimed to determine the distribution of ABO and Rh-D blood groups among blood donors in the Amhara regional state, Ethiopia.MethodsA cross-sectional study was conducted from March 2016 to September 2018 among blood donors in the four blood bank districts (Gondar, Bahir Dar, Debre Markos, and Dessie) of the Amhara regional state, Ethiopia. A total of 1040 blood donors aged from 18 years old to 60 years old were included using a simple random sampling technique. A structured questionnaire and a data collection sheet were used to obtain the socio-demographic data and blood group types of study participants. The ABO and Rh-D blood groups were typed using commercially prepared antisera after 1 mL of blood was taken from blood bags. The data was cleared by Epi-Info Version 7 and extracted into SPSS version 25 for analysis. The distribution of data was checked by using the Shapiro–Wilk test. Then, the data was presented in tables and figures.ResultsIn this study, out of 1040 study participants, 55.6% were males with a median age of 20 years (IQR = 19–24 years). In this study, the distribution of ABO blood types O, A, B, and AB was 41.6% (433/1040), 28.7% (298/1040), 22.2% (229/1040), and 7.7% (80/1040), respectively. On the other hand, the Rh-D positivity was 92.5% (962/1040).ConclusionThe overall predominant ABO blood group in the Amhara regional state was O (41.6%), and the least was AB (7.7%). Besides, the overall Rh-D negative blood distribution was 7.5%, which ranged from 4.46% to 9.6%. Therefore, this information would be useful to the blood banks, especially in the planning of blood transfusion programmers.

ABO Blood Type and Risk of Peyronie's Disease in Japanese Males.

PurposeAlthough multiple mechanisms associated with Peyronie’s disease (PD) have been proposed, details regarding etiologic factors, especially genetic, remain unclear. We examined the relationship of the ABO blood type system, known as a genetic factor associated with susceptibility to a number of diseases, with PD in Japanese males.Materials and MethodsWe compared 202 Japanese PD patients treated with surgery at our hospital between March 2004 and December 2019 with 846 randomly selected non-PD male patients who underwent urological surgery during the same period regarding distribution of ABO blood types. In addition, we assessed the risk of PD according to blood type group among all study participants using odds ratio (OR) and 95% confidence interval (CI) calculations.ResultsThe distribution of individual blood types in the control group was nearly the same as that in the general Japanese population. In contrast, O, A, B, and AB blood types were noted in 37.6%, 36.1%, 14.9% and 11.4%, respectively, of the PD patients, which was significantly different from the control group, where blood type O was found in 29.1% and B in 23.2% (p<0.05). Our results showed that as compared with patients with blood group B, those with another blood type were more likely to develop PD, among which type O had a significantly increased OR of 2.018 (CI, 1.271–3.205).ConclusionsThese are the first reported results showing that ABO blood type may be associated with risk of PD, though further investigations are needed.

The association of ABO blood types with host susceptibility to hemorrhagic fever with renal syndrome.

Since the discovery of ABO blood types, there has been mounting evidence of the association between blood types and infectious diseases. However, so far, there is rarely available research about the potential role of ABO blood types in haemorrhagic fever with renal syndrome (HFRS) infection. Our aim was to investigate the relationship between ABO blood types and the development of HFRS infection in Qingdao, China. We carried out a retrospective study enrolling 116 HFRS patients as the case group and 373 healthy subjects as the control group. ABO blood type distribution was analysed using the Chi-square test and logistic regression analysis. Results showed that the distribution of ABO blood types between the two groups was significantly different (X2 = 18.151, P &lt; 0.05). Blood type B was less frequently observed [odds ratio (OR), 0.404; confidence interval (CI), 0.238–0.684; P &lt; 0.01], while blood type AB was more frequently observed in the case group (OR, 2.548; CI, 1.427–4.549; P &lt; 0.01). Since significantly more males were affected than females, we further analysed the data by gender as well as blood types and obtained consistent results for males. Our findings indicated that populations with blood type AB might be more prone to HFRS infection, whereas those with blood type B might be less susceptible to HFRS infection, which will help to make risk stratification in infection control.

Role of ABO blood system in COVID-19: Findings from a southern Italian study.

COVID-19 is a worldwide infection caused by SARS-CoV-2 and infects humans by binding to the ACE2 receptor. Blood group ABO glycoproteins can influence the binding of the virus to ACE2. The role of ABO blood system in the susceptibility to infection as well as in the clinical outcome of infected patients is still controversial and needs to be clarified. We conducted a retrospective study of 167 patients positive for SARS-CoV-2 who underwent nasopharyngeal swab, and of a control group represented by 891 subjects negative for SARS-CoV-2, to assess the association between ABO and Rh blood system and occurrence of SARS-CoV-2 infection, clinical presentation, and outcome of disease. In the cohort of patients positive for SARS-CoV-2, no statistically significant difference in the distribution of ABO blood types compared with controls was observed. Patients with blood type A had a higher risk of developing symptomatic disease (p= 0.002; odds ratio [OR=3.592]; 95% confidence interval [CI]=1.576-8.187) compared to patients with blood types B, AB, and O. Patients with blood types B (p= 0.021; OR=0.293; 95%CI=0.099-0.869) and O (p= 0.018; OR=0.417; 95%CI=0.199-0.871) showed a lower risk in comparison to the other groups. The clinical progression to mild/moderate and severe/critical disease and the mortality showed no association. Moreover, no relationship with Rh blood type was found. Our findings support a role of ABO blood type in the development of symptomatic disease with a higher risk in subjects with blood type A and a protective effect of blood types B and O. Blood types do not seem, however, to play a role in susceptibility, progression to severe disease, and death.

Frequency and Prognostic Value of ABO Blood Groups in Patients with Hypertension, Obesity, Diabetes Mellitus, and Anemia in Local Population of Al-Najaf City/ Iraq

This study was designed to investigate the distribution of ABO blood types and the possible association of hypertension, diabetes mellitus, obesity, and anemia diseases with ABO types. A total of 535 individuals 277 (51.77% males and 258 (48.22% females) were participating in the present study. Among them, 389 healthy subjects (187 (48.07% males and 202 (51.92% females) as well as 146 patients 90 (61.60%) males and 56 (38.40% females), 67 (37.85 % had hypertension, 51 (28.81%) had DM, 29 (16.38% had obesity and 30 (16.94%) subjects had anemia, the participants were attending hospitals, clinics, and laboratories. The demographic and clinical details, including ABO blood groups, blood glucose, blood pressure, blood hemoglobin as well as height and weight were obtained for both groups. Data analysis was done using the Chi-square test for comparing data. Based on the results, O blood type was the most common group with a percentage of (43.18% and 47.26%) followed by A type (25.44% and 26.02%) then B (22.87% and 13.01%), and AB (8.48% and 13.69%) respectively for healthy and non-healthy individuals. Hypertension and diabetes mellitus diseases were the greatest percentage (37.85% and 28.81%) respectively comparing with obesity (16.38%) and anemia (16.94%). The present study indicated that individuals of blood group O and A (52.48% and 23.75%, respectively) were more susceptible to diseases as compared with patients of blood group B (12.70%) and AB (11.04%). Our results suggested that the relative risk for hypertensive and diabetic patients was found to be higher in blood group AB (45% and 35% respectively) and lower in blood group O (36.84% and 25.26% respectively); high incidence of obesity was found in type O blood (24.21%) compared to other ABO types, while anemia was prone for patients with A blood group (20.93%). The results showed no association between ABO blood groups with hypertension, diabetes mellitus, obesity, and anemia diseases.

Association between the dynamics of the COVID-19 epidemic and ABO blood type distribution.

The coronavirus disease 2019 (COVID-19) pandemic is currently the most critical challenge in public health. An understanding of the factors that affect severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection will help fight the COVID-19 pandemic. This study sought to investigate the association between SARS-CoV-2 infection and blood type distribution. The big data provided by the World Health Organization (WHO) and Johns Hopkins University were used to assess the dynamics of the COVID-19 epidemic. The infection data in the early phase of the pandemic from six countries in each of six geographic zones divided according to the WHO were used, representing approximately 5.4 billion people around the globe. We calculated the infection growth factor, doubling times of infection and death cases, reproductive number and infection and death cases in relation to the blood type distribution. The growth factor of infection and death cases significantly and positively correlated with the proportion of the population with blood type A and negatively correlated with the proportion of the population with blood type B. Compared with the lower blood type A population (<30%), the higher blood type A population (⩾30%) showed more infection and death cases, higher growth factors and shorter case doubling times for infections and deaths and thus higher epidemic dynamics. Thus, an association exists between SARS-CoV-2 and the ABO blood group distribution, which might be useful for fighting the COVID-19 pandemic.

ABO blood type analysis in patients with chronic obstructive pulmonary disease

Tobacco smoking is major risk factor for development of chronic obstructive pulmonary disease (COPD), which appears in 15-20% of smokers. Apart from smoking, exposure to polluted air and various noxae, and several genetic factors influence its development as well. The ABO blood type distribution varies among populations in the world, but also within subpopulations. A large number of studies have shown a correlation between blood types and the pathology of various diseases. These markers, used in population genetic research, have mainly shown deviations in the representation of blood groups in different diseases, compared to the general population. The aim of this study was to determine the ABO blood types distribution in patients with COPD compared to the general population, and their possible association with COPD stage, patients? nutritional status and lung function impairment. This observational, prospective study included 150 patients (68.7% men and 31.3% women), average age 64.80 ? 8.38 years, diagnosed with COPD. Data were collected at the Clinical Center of Montenegro in Podgorica and at the Special Hospital for Lung Diseases Brezovik in Niksic. Determination of blood types of the ABO system and Rh factors for all subjects was performed at the Blood Transfusion Center in Podgorica. Apart from patients? tobacco smoking status (duration of smoking and the number of cigarettes smoked per day expressed in pack/years for current smokers and former smokers), we also analyzed their exposure to various other noxae, their body mass index, and lung function in correlation to ABO blood type and Rh factor, and performed statistical analysis. We found a significant difference in the distribution of ABO blood types in patients with COPD compared to the general population. The highest frequency of blood type A was found in patients with COPD. We also found the lowest average values of spirometry parameters in that group, which represented majority of those patients with respiratory insufficiency having the most severe stage of the disease. Combined blood types A, B and were significantly more common in patients with COPD in comparison to blood type O, which is the least represented (23.3%). The least obstructive disturbance of pulmonary ventilation was found in the patients with B type. Respiratory insufficiency showed differences in gender representation, found in 40.4% of women, and in 25.2% of men with terminal phase of COPD. The prevalence of AB, higher than expected, decreases with the severity of the disease.

ABO Blood Group is Associated with COVID-19 Susceptibility: a Systematic Review and Meta-Analysis

Introduction: Conflicting evidences exist that ABO blood groups correlate with the susceptibility to COVID-19 and its clinical outcomes. This study aimed to pool available articles that assessed a possible relationship between COVID-19 and ABO blood groups. Materials and methods: A search was conducted in four databases comprising Pubmed/Medline, Google scholar, Journal storage (JSTOR) and African Journals Online (AJOL) for relevant studies available before 25th August 2020 and contained extractable data on ABO blood type distribution and COVID-19 disease. Search terms included a combination of “ABO blood group, and COVID-19, coronavirus, and SARS-COV-2”. Results: Fourteen articles that met study inclusion criteria were selected from a total of five hundred and eighty-five articles identified through database search. The fourteen articles reviewed comprised of a total of 73934 subjects (13189 SARS-COV-2 positive cases and 60745 controls). Overall, the risk of SARS-COV-2 infection was found to be significantly increased in patients with blood group A with ORs: 1.24 (95%Cl: 1.09-1.41, P = 0.001). Additionally, blood group O subjects were seen to have decreased odds of contracting COVID-19 infection (OR: 0.78, 95%Cl: 0.68 – 0.89, P=0.0003). No significant association was found between ABO blood groups and COVID -19 severity and mortality. Conclusions: Blood group A was associated with a higher risk of SARS-COV-2 infection whereas risk of infection was lower in blood group O subjects. No statistical significant association was found between ABO blood groups and COVID-19 severity and mortality. The precise role of ABO blood group in COVID-19 susceptibility, severity and mortality requires further research for clarification.

Does PCR Cycle Threshold for SARS-CoV-2 have Association with ABO Blood Group Types?

Introduction: Corona Virus Disease-19 (COVID-19) caused by the Severe Acute Respiratory Syndrome-Corona Virus-2 (SARS-CoV-2) has led to a global pandemic. Currently, the standard method for the diagnosis of COVID-19 is the detection of SARS-CoV-2 by Reverse Transcriptase Quantitative Polymerase Chain Reaction (RT-qPCR). Lower Cycle threshold (Ct) value of PCR is found to be associated with increased probability of progression to severe disease and infectivity. Blood group A individuals have been found to be more susceptible to infection by SARS-CoV-2 while that of O blood group have lower risk of infection. There has been growing scientific interest to obtain data which may characterise the susceptibility to COVID-19 infection and determine the risk factors which may be associated with progression and severity of the disease. Aim: To study the association of RT-qPCR Ct values for SARS-CoV-2 with ABO blood group types. Materials and Methods: A prospective observational study was conducted at tertiary care centre in western Maharashtra, India where in a total of 116 symptomatic admitted patients between mid-July to mid-August 2020 and was found to be positive for SARS-CoV-2 by RT-qPCR were enrolled in the study. Ct values for pan-Sarbecovirus E-gene and SARS-CoV-2 specific RdRP gene were recorded for each patient. In addition, all the patients were typed for ABO blood grouping. Distribution of different ABO blood group types in SARS-CoV-2 positive patients were analysed and was compared with blood groups in 882 non-COVID-19 blood donors comprising control group. Ct values for E and RdRP gene were also analysed in respect to different age group, gender and blood group types. Blood group records of voluntary healthy blood donors reporting at our centre between September to November 2019 were obtained. Results: Of the 116 patients, 33 (28.45%) comprised of type A, 34 (29.31%) of type B, 41 (35.34%) were of type O and remaining 8 (6.90%) had AB blood group type. Compared to the control group, no significant difference was noted in the distribution of ABO blood types in SARS-CoV-2 positive patients. Also, no statistical significance was found in the Ct values with respect to age, gender and different ABO blood group types. Conclusion: RT-qPCR Ct values for SARS-CoV-2 infection have no association with ABO blood group types.

P.142: Trends of duration on waiting list for kidney transplantation in single center.

Background: A rapid increase of End Stage Renal Disease (ESRD) compares to the limited number of donors aggravated organ shortages and led to a longer waiting time for Deceased Donor Kidney Transplantation (DDKT). Methods: To mitigate the situation and suggest alternatives, the current status of waiting time for first- DDKT, re-DDKT and simultaneous pancreas-kidney transplantation (SPK) along with its prognostic factors were analyzed. A total of 2,776 DDKT patients, who registered on Korean Network for Organ Sharing (KONOS) through Seoul National University Hospital (SNUH) from January 1st 2000 to December 31st 2018, were assessed in this study. A statistical analysis performed by using SPSS. Results: As of December 31st 2018, a total of 2,776 were registered for deceased donor kidney transplantation and 672 successful kidney transplant recipients were classified into three groups; First-DDKT (616, 91.6%), Re-DDKT (14, 2.1%) and SPK (42, 6.3%). Mean age was 45,7 ± 16.7 and males were 403 (60%). The ABO blood type distribution was fairly even considering regional characteristics; A 234 (34.8%), B 189 (28.1%), AB 99 (14.7%), O 150 (22.3%), respectively. The average waiting period of transplantations was 42 months and blood type O (P < 0.01) was an independent risk factor for long waiting time for DDKT; blood type A 44 months, B 41 months, AB 39 months, and O 45 months. The waiting period of each five years showed a certain trend that it has significantly increased after 2010: Within 155 patients who registered from 2000 to 2004, 132 (85%) transplantation has completed with an average waiting period of 63 months and 23 (14%) patients are still waiting for the donors with an average waiting period of 126 months. For 437 patients in the next five years, from 2005 to 2009, 234 (54%) transplantation has completed with an average waiting period of 62 months and 203 (46%) patients are still waiting for the donors with an average waiting period of 126 months. There was a drop in the speed of the transplantation after 2010; 1,074 patients, who registered between 2010 and 2014, 286 (27%) transplantation has completed with an average waiting period of 30 months and 788 (23%) patients are still waiting for the donors with an average waiting period of 77 months. The trend has continued on the recent group; 1,109 patients, who registered between 2015 and 2018, 20 (2%) transplantation has completed with an average waiting period of 6 months and 1,098 (98%) patients are still waiting for the donors with an average waiting period of 23months. Conclusions: This study has shown that the kidney transplantation took forty-two months in average from the registration until the operation and the waiting time for DDKT has been extended since 2010. Therefore, Extended Criteria Donor (ECD) should be recommended for risky groups such as old registrants with blood type of O.

Serum amylase activity altered by the ABO blood group system in Chinese subjects.

ObjectiveThe underlying interactions between ABO blood group antigens and pancreatic exocrine tissue have been demonstrated, and serum amylase was synthesized by pancreatic ductal cells. Thus, we investigated the link between ABO blood type and serum amylase activity in Chinese subjects.MethodsOur study included 343 relatively healthy Chinese individuals, and the data were retrieved from electronic medical record database.ResultsA increased trend was observed for serum amylase activity in ABO blood type distribution, and we found that serum amylase activity was remarkable increased in subjects with O blood type compared to those with non‐O blood type (P = 0.013). Logistic regression analysis indicated that serum amylase was independently associated with individuals with O blood group (adjusted odds ratio 1.574; 95% CI, 1.022‐2.425, P = 0.039).ConclusionsThe present evidence suggests a significant link between serum amylase activity and ABO blood type in the study population, indicating ABO blood type may be associated with the susceptibility of pancreatic disease.

The clinical relevance of ABO blood type in 100 patients with acute subdural hematoma.

ObjectiveThe correlation of depleted blood through midline shift in acute subdural hematoma remains the most reliable clinical predictor to date. On the other hand, patient’s ABO blood type has a profound impact on coagulation and hemostasis. We conducted this study to evaluate the role of patient’s blood type in terms of incidence, clinical course and outcome after acute subdural hematoma bleeding.Methods100 patients with acute subdural hematoma treated between 2010 and 2015 at the author’s institution were included. Baseline characteristics and clinical findings including Glasgow coma scale, Glasgow outcome scale, hematoma volume, rebleeding, midline shift, postoperative seizures and the presence of anticoagulation were analyzed for their association with ABO blood type.ResultsPatient’s with blood type O were found to have a lower midline shift (p<0.01) and significantly less seizures (OR: 0.43; p<0.05) compared to non-O patients. Furthermore, patients with blood type A had the a significantly higher midline shift (p<0.05) and a significantly increased risk for postoperative seizures (OR: 4.01; p<0.001). There was no difference in ABO blood type distribution between acute subdural hematoma patients and the average population.ConclusionThe ABO blood type has significant influence on acute subdural hematoma sequelae. Patient’s with blood type O benefit in their clinical course after acute subdural hematoma whereas blood type A patients are at highest risk for increased midline shift and postoperative seizures. Further studies elucidating the biological mechanisms of blood type depended hemostaseology and its role in acute subdural hematoma are required for the development of an appropriate intervention.

Clinical Impact of ABO and Rhesus D Blood Type Groups in Patients With Chronic Heart Failure

Blood group systems based on red blood cell antigens are genetically determined and can identify patients at risk. Type non-O of the ABO blood group system has been associated with coronary artery disease, thrombosis, and a worse prognosis. The present study evaluated the distribution of blood group types in patients with heart failure (HF) and the impact on clinical outcome. We evaluated the ABO and Rhesus D antigen (RhD) blood types in a large cohort of chronic HF patients (n = 3,815). ABO blood type distribution in the HF population was not significantly different to that reported in the general national population (A 40%, B 20%, AB 8%, and O 33%). The percentage of Rh-negative per blood type was also similar (A 10%, B 9%, AB 10%, and O 7%). Patients with type O were more likely to be hypertensive compared with non-O type. Mean follow-up was 4.2years. Overall survival during follow-up was 55%. Cox regression analysis after adjustment for significant predictors demonstrated that RhD-negative was associated with a worse prognosis in patients with ischemic cardiomyopathy (n = 2,881, 76%): hazard ratio 1.26, 95% confidence interval 1.04 to 1.53, p = 0.02. Type non-O was also independently associated with a worse prognosis compared with type O in patients with non-ischemic cardiomyopathy: hazard ratio 1.32, 95% confidence interval 1.04 to 1.67, p = 0.02. In conclusion, blood group type distribution in HF patients are similar to the general population. RhD-negative is associated with a worse prognosis in patients with ischemic cardiomyopathy.

Genetic Susceptibility to Rotavirus Gastroenteritis and Vaccine Effectiveness in Taiwanese Children

The genetic susceptibility to and vaccine effectiveness against rotavirus gastroenteritis were different in distinct ethnic groups. The case-control study was aimed to evaluate the effectiveness of rotavirus vaccines and associations between the histo-blood group antigens and susceptibility to rotavirus infections in a Taiwanese population. Cases were children <18 years old who were hospitalized because of laboratory-confirmed rotavirus infection. Controls were healthy children matched to cases by age and gender. The secretor status and Lewis antigen and ABO types were determined by molecular methods. A total of 68 cases and 133 controls were included. Rotavirus immunization was recorded in 8 (12%) cases and 77 (58%) controls, indicating a vaccine effectiveness of 90.3% (95% confidence interval [CI], 78.1% − 95.7%). The secretor and Lewis-positive genotypes were independently associated with increased risk of rotavirus infections (matched odds ratio [mOR] 28.5, 95% CI 2.94–277, P = 0.003 and mOR 16.8, 95% CI 1.08–2601, P = 0.04, respectively). The distribution of ABO blood types did not differ significantly between cases and controls (P = 0.47). In conclusion, Taiwanese children with the secretor genotype and Lewis-positive genotype were at increased risk of moderate-to-severe rotavirus infections. The illness can be effectively prevented by immunization in this population.

Association Between ABO Blood Type and Postoperative Cognitive Dysfunction in Elderly Patients Undergoing Unilateral Total Hip Arthroplasty Surgery in China.

BackgroundPostoperative cognitive dysfunction (POCD) is a postoperative complication after surgery and anesthesia. Whether ABO blood types are associated with POCD in elderly patients undergoing unilateral total hip arthroplasty surgery in China is unclear.Material/MethodsFirstly, 142 elderly patients were divided into a POCD group and a non-POCD group according to the Mini Mental State Examination (MMSE) scores and ABO blood types were analyzed. Secondly, according to ABO blood type, the selected 226 patients were divided into 4 groups: type A group, type B group, type AB group, and type O group. Then, all patients completed the MMSE before and after surgery. Finally, the occurrence of POCD was recorded and related data were analyzed.ResultsFirstly, there was a significant difference in both groups in terms of distribution of ABO blood types, and elderly patients who developed POCD were more likely to have type A blood and less likely to have type O blood. Secondly, compared with elderly patients with type A blood, those with type O had higher MMSE scores on the first day and the seventh day after surgery. Finally, the risk of developing POCD was significantly higher in patients with type A blood and on the first day and the seventh day after surgery the risk of developing POCD was significantly lower in patients with type O blood.ConclusionsElderly patients with type A blood have higher risk of developing early POCD and those with type O blood have less risk of developing early POCD.

Association of ABO blood types and clinicopathological features of ureteral transitional cell carcinoma in a single-center in China.

The purpose of this study was to evaluate the correlation of ABO blood types and clinicopathological characteristics of patients with ureteral transitional cell carcinoma. In our study, an entire cohort of 239 patients who were pathological diagnosed as ureteral transitional cell carcinoma (TCC) between February 2002 and March 2010 were reviewed retrospectively. Variables including demographic features, tumor grades, tumor stages, type of surgery and number of tumors as well as ABO blood types status were evaluated. The relationship between the ABO blood group and clinicopathological variables was assessed by Chi-squared analysis. The ratio of male to female was 1: 1.12. The median age at diagnosis was 68.5 years. A total of 111 neoplasms located in the right ureter. A total of 218 patients had radical nephroureterectomy (RNU). Multifocality was observed in 32 patients. The pathology was as follow: Grade 1 (seven cases), Grade 2 (110 cases) and Grade 3 (122 cases); Ta and T1 (83 cases), T2-T4 (156 cases). The distribution of ABO blood types was A, B, O and AB in 70 (29.3%), 76 (31.8%), 66 (27.6%) and 27 (11.3%), respectively. There were no significant differences in the clinicopathological variables among individuals with different ABO blood types. In a subgroup analysis, B and O group showed a worse tumor stage compared with A and AB groups (P = 0.01). B and O blood types are at higher risk of muscle invasive ureteral TCC as compared with A and AB blood types. We suggest ABO blood types to be taken into consideration when urologists select therapeutic schemes for individuals with ureteral TCC.