scholarly journals Type of article: Research article “Association of ABO blood groups with craniofacial morphology among orthodontic patients of Kathmandu district”

2019 ◽  
Author(s):  
Sanjay Prasad Gupta

Abstract Background: The craniofacial morphology and blood groups both are related to genetic components, hence it can be hypothesized that blood groups have an association with craniofacial morphology. Some studies showed the relationship whereas others could not find any relationship that may be due to geographic diversity of the population. The aim of this study was to find out the relationship between ABO blood groups and craniofacial morphology among orthodontic patients of Kathmandu district. Materials and Methods: In this cross sectional study, a total of 385 participants (age range from 13-45 years) were selected among the orthodontic patients who came for orthodontic treatment in private orthodontic clinics. After obtaining written consent, all the patient’s demographic information were recorded and lateral cephalograms were obtained from the patient’s record. Blood group of all the participants was recorded. Results: The study found that among the total of 385 participants, 162 (42.07%) were male while 223 (57.93%) were female and the mean age was 16.31±4.38 years. Twenty cephalometric parameters depicting craniofacial morphology were digitally analyzed using lateral cephalogram. The prevalence of blood group O patients was highest (32.20%) followed by blood group B (30.64%), blood group A (29.88%) and blood group AB (7.28%). Statistical analysis with one way ANOVA was used for association of numerical data and blood groups that revealed nine out of twenty cephalometric parameters were statistically significant among different blood groups (p<0.05). Tukey post hoc test was done to find out where the significant difference occurs among the groups. Conclusions: The evaluation of the relationship between blood group and craniofacial morphology revealed that blood groups have association with some craniofacial parameters. This suggest, there may be some genetic influence of ABO blood group on craniofacial morphology. Keywords ABO blood groups, Craniofacial morphology, Association, Orthodontic patients

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0249252
Author(s):  
Reaz Mahmud ◽  
Mohammad Aftab Rassel ◽  
Farhana Binte Monayem ◽  
S. K. Jakaria Been Sayeed ◽  
Md Shahidul Islam ◽  
...  

Background Globally, studies have shown conflicting results regarding the association of blood groups with SARS CoV-2 infection. Objective To observe the association between ABO blood groups and the presentation and outcomes of confirmed COVID-19 cases. Design, setting, and participants This was a prospective cohort study of patients with mild-to-moderately severe COVID-19 infections who presented in the COVID-19 unit of Dhaka Medical College Hospital and were enrolled between 01 June and 25 August, 2020. Patients were followed up for at least 30 days after disease onset. We grouped participants with A-positive and A-negative blood groups into group I and participants with other blood groups into group II. Results The cohort included 438 patients; 52 patients were lost to follow-up, five died, and 381 completed the study. The prevalence of blood group A [144 (32.9%)] was significantly higher among COVID-19 patients than in the general population (p < 0.001). The presenting age [mean (SD)] of group I [42.1 (14.5)] was higher than that of group II [38.8 (12.4), p = 0.014]. Sex (p = 0.23) and co-morbidity (hypertension, p = 0.34; diabetes, p = 0.13) did not differ between the patients in groups I and II. No differences were observed regarding important presenting symptoms, including fever (p = 0.72), cough (p = 0.69), and respiratory distress (p = 0.09). There was no significant difference in the median duration of symptoms in the two group (12 days), and conversion to the next level of severity was observed in 26 (20.6%) and 36 patients (13.8%) in group I and II, respectively. However, persistent positivity of RT-PCR at 14 days of initial positivity was more frequent among the patients in group I [24 (19%)] than among those in group II [29 (11.1%)]. Conclusions The prevalence of blood group A was higher among COVID-19 patients. Although ABO blood groups were not associated with the presentation or recovery period of COVID-19, patients with blood group A had delayed seroconversion.


2006 ◽  
Vol 76 (6) ◽  
pp. 996-1003 ◽  
Author(s):  
Toshiya Endo ◽  
Rieko Ozoe ◽  
Sugako Yoshino ◽  
Shohachi Shimooka

Abstract Objective: The purpose of this study was to explore the association of hypodontia patterns and variations in craniofacial morphology in Japanese orthodontic patients. Materials and Methods: A total of 50 girls with hypodontia (the total group) were selected and categorized into anterior, posterior, and anterior-posterior groups according to the location of the congenitally missing teeth. By using the lateral cephalograms of each subject, 28 angular and 37 linear measurements were made. The cephalometric data were statistically analyzed and compared among the groups and with the Japanese cephalometric standards from 36 age-matched female subjects without hypodontia or malocclusion (the control group). Results: Every hypodontia group showed shorter anterior and overall cranial base lengths, shorter maxillary length, greater retroclination and elongation of mandibular incisors, and a larger interincisal angle than the control group. The total and anterior-posterior groups especially exhibited a significantly more prognathic mandible, larger retroclination of maxillary incisors, and a more counterclockwise-rotated occlusal plane. Furthermore, these skeletal and dental deviations were more remarkable in the anterior-posterior group than in either the anterior or the posterior group. Anterior hypodontia exerted as much influence on craniofacial morphology as posterior hypodontia. Conclusions: When orthodontic treatment is performed on patients with hypodontia, not only the number but also the distribution of missing teeth should be taken into consideration, though there was no significant difference in craniofacial morphology between anterior hypodontia and posterior hypodontia.


Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 254-254 ◽  
Author(s):  
Letian Dai ◽  
Shawn Cotton ◽  
Alistair Macartney ◽  
Geoffrey Savidge ◽  
Anwar Alhaq

Abstract Plasma levels of vWF are known to be influenced by ABO blood groups, although the mechanism remains unresolved. Group O individuals have a significantly lower level of plasma vWF than those with group A, B or AB. This relative lower level of plasma vWF may result in a bleeding tendency and a shorter half-life of infused factor VIII in group O individuals. The formation of immune complexes between vWF and autoantibodies has been shown to accelerate vWF clearance from plasma in acquired von Willebrand syndrome. However, so far no evidence has been presented that the presence of autoantibodies against vWF is involved in lowering plasma level of vWF in group O individuals. In the present study, plasma samples were obtained from 199 healthy blood donors of blood group O (50), group A (50), group B (49), and group AB (50). A time-resolved fluorescence immunoassay (TRFIA) was developed to detect anti-vWF IgG in plasma samples. Briefly, 100 μl of diluted plasma was loaded on to duplicated vWF-coated and untreated control wells of a microplate. After incubation and washing, 100 μl of Europium-labeled anti-human IgG conjugate (1:500 dilution) was added to the plate to detect vWF IgG. The time-delayed fluorescence was then measured with a Victor microplate reader (PerkinElmer, Turku, Finland). The fluorescence counts of the control wells were subtracted from those of the vWF-coated wells. The results show that anti-vWF IgG was present in all four blood groups (Table 1). Of these blood groups, group O had the highest anti-vWF IgG level with 9.8 x 105 fluorescence counts, which was 2.7- to 3.5-fold higher than that of group A, B or AB. There was a significant difference in the anti-vWF IgG levels between group O and the rest of group A, B or AB. Quantitative analysis of plasma vWF by ELISA showed that the concentration of plasma vWF of group O was 29 to 35% lower than that of group A, B or AB (Table 1). These results suggest that TRFIA is a sensitive assay for detection of anti-vWF IgG in plasma samples, and the presence of the high level of anti-vWF Ig G in group O individuals may be responsible for lowing plasma vWF by acceleration of vWF clearance. Anti-VWF IgG levels and vWF concentrations in diffeent ABO blood groups Group O (n=50) Group A (n=50) Group B (n=49) Group AB (n=50) Data are presented as a mean ± SD. *P<0.01 compared with group A, B or AB. +P<0.01 compared with group A,B or AB. Anti-vWF IgG (x 105 Fluorescence counts) 9.8 ± 6.9* 2.8 ± 2.8 3.1 ± 3.0 3.6 ± 3.5 Concentration of vWF (% of normal controls) 116 ± 42+ 165 ± 46 165 ± 42 179 ± 49


1981 ◽  
Vol 87 (1) ◽  
pp. 139-146 ◽  
Author(s):  
M. Lebiush ◽  
L. Rannon ◽  
J. D. Kark

SummaryAn outbreak of influenza caused by the A(H1N1) subtype in military recruits in February 1978 afforded an opportunity to study the association of ABO blood groups with influenza morbidity and serological response. Fifty-eight per cent of 336 recruits became clinically ill. There was no differential distribution of clinical influenza by blood group. However, seroconversion to a titre of ≥ 20 was significantly and appreciably higher in groups A and B than O and AB. Also, among those with serologically confirmed clinical influenza, the occurrence was significantly higher in groups A and B than groups O and AB.


Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 32-33
Author(s):  
Waleed Alduaij ◽  
Sarah Al-Youha ◽  
Ahmad Al-Serri ◽  
Sulaiman Almazeedi ◽  
Mohannad Al-Haddad ◽  
...  

Background: Factors determining inherent susceptibility to infection with the novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and the risk of severe outcomes in infected individuals remain poorly understood. Landsteiner ABO blood groups have been linked to host susceptibility to various infections through the interaction of the carbohydrate moieties defining ABO antigens with micro-organisms and the immune system. Previous studies of the original SARS coronavirus (SARS-CoV-1) demonstrated a decreased susceptibility to infection in group O individuals (Cheng et al. JAMA 2005; 293:1450-1) and the ability of plasma-derived anti-A antibodies to block the interaction between viral spike protein and human angiotensin-converting enzyme 2 receptor in vitro (Guillon et al. Glycobiology 2008; 18:1085-93). A recent genome-wide association study of patients with respiratory failure complicating coronavirus disease 2019 (COVID-19) suggested a higher risk of severe disease in group A, and a protective effect in group O (Ellinghaus et al. NEJM 2020 DOI:10.1056/NEJMoa2020283). Since the inception of the COVID-19 pandemic, a broad testing strategy was implemented in Kuwait and all individuals testing positive for SARS-CoV-2 were admitted to a single facility, including asymptomatic individuals. Here we examined the clinical outcomes of this cohort with respect to ABO blood group and compared its blood group distribution to that of the general population. Methods: All patients testing positive for SARS-CoV-2 by polymerase chain reaction assay of a nasopharyngeal swab specimen that were admitted to Jaber Hospital between February 24th to May 27th 2020 were included in the study. Relevant demographic and clinical data were extracted from hospital records. An anonymized summary of the distribution of blood types of the entire population of Kuwait was obtained from a national database and used as a control group. Clinical outcomes were in accordance with international consensus definitions. Appropriate statistical tests were used for bivariate analysis. Multivariate logistic regression was performed to determine relationships between variables of interest and outcome. Results: Of 3305 SARS-CoV-2 positive patients 37.1%, 25.5%, 28.9% and 8.5% were group O, A, B and AB respectively. 69.2% were male and 30.8% were female. Median age was 42 years. 48.1% were Kuwaiti citizens and 51.9% were non-Kuwaiti. Commonest comorbidities were hypertension (21.5%) and diabetes (20.1%). 17.4% were obese. 37.2% were asymptomatic on admission. There was no significant difference in baseline characteristics among the blood groups. Univariate analysis of clinical outcomes revealed no significant differences in need for oxygen support, admission to intensive care, intubation or death among the blood groups. However, rates of any adverse event and pneumonia differed significantly (Table 1). Multivariable analysis adjusted for age, sex, obesity and comorbidities showed that group A had higher odds of developing pneumonia compared to the other blood groups combined (adjusted odds ratio 1.32, 95% confidence interval 1.02-1.72, p&lt;0.0363). We found no relationship between pneumonia and other blood groups. Compared to the general population, the COVID-19 cohort had a lower frequency of group O, equivalent frequency of group A and higher frequency of groups B and AB (Table 2). This trend was independent of nationality (Kuwaiti versus non-Kuwaiti). Incorporation of Rh (D) status did not impact the trend observed with ABO blood groups. Finally, no significant difference in Rh (D) status was found between the COVID-19 and general populations (Rh positive 93.4% versus 93.6% respectively, p=0.99) Conclusion: In a large, unselected patient population, no association between blood group and severe clinical outcomes in COVID-19 was found. Consistent with reports in other populations, we found a lower prevalence of blood group O in SARS-CoV-2 positive individuals and higher prevalence of blood group B and AB implicating a potential role of ABO blood group in susceptibility to infection. No association between SARS-CoV-2 infection with blood group A or Rh (D) group was found. Further examination of the mechanistic link between ABO antigens, antibodies and SARS-CoV-2, and its implications on controlling the current pandemic is warranted. Disclosures No relevant conflicts of interest to declare.


Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 4990-4990
Author(s):  
Terry Mizrahi ◽  
Caroline Laverdière ◽  
Michele David ◽  
Jean-Marie Leclerc ◽  
Lehana Thabane ◽  
...  

Abstract Background: Individuals with non-O blood group are shown to have increased risk of thromboembolism (TE). The exact pathogenesis of the prothrombotic effect of non-O blood group, is however not known. Because individuals with O-blood group have low levels of von Willebrand factor (vWF) compared to those with non-O blood group, vWF has been contemplated as a pathogenetic mechanism in ABO blood group-related prothrombotic risk. However, the available data regarding the role of vWF in the thrombotic risk of non-O blood group are inconclusive. Children with acute lymphoblastic leukemia (ALL) are at increased risk of TE. Several factors such as older age, leukemia phenotype and asparaginase have been shown to impact the risk of TE in children with ALL. We have recently shown that non-O blood group and circulating blasts were significant risk factors for TE in children with ALL. We have also shown that at diagnosis of ALL patients with circulating blasts have significantly higher levels of vWF compared to those without circulating blasts.  Within the context of a larger study aimed to define risk factors for symptomatic TE (sTE) in children with de novo ALL, we undertook a sub-study to evaluate the relationship of ABO blood groups and vWF level at diagnosis of ALL, and to evaluate the impact of circulating blasts on the vWF levels in children with O and non-O blood groups. We hypothesized that compared to patients with O-blood group, those with non-O blood group will have significantly higher levels of vWF and that circulating blasts will have additive effect on the vWF levels in patients with non-O blood group.  Methods : The multicenter, prospective, analytical cohort study included consenting patients (1-≤18 yrs. of age) with de novo ALL enrolled on the Dana-Farber Cancer Institute 05-001 therapeutic trial. Details of patient demography including ABO blood group, ALL diagnosis, therapy and symptomatic TE (sTE) were collected. Samples collected prior to starting ALL-therapy were analyzed centrally for prothrombotic defects (PD) including [protein C, S, antithrombin, Factor VIII:C, vWF, anticardiolipin antibodies and gene polymorphisms of methylene tetrahydrofolate reductase C677T, prothrombin G20210A, Factor V Leiden]. Age-adjusted standardized laboratory data defined PD. Regression analyses evaluated relationship between risk factors and sTE. Thrombosis-free survival was estimated using Kaplan-Meier method.  Results : Of 131 enrolled patients [mean age (range) 6.4 (1-17) yrs.; 70 boys], 21 (16%) developed sTE. ABO blood group information was available for 127 patients; 51 patients had blood group O and 76 non-O (57 with blood group A, 15 with B, and 4 with AB). There was no impact of PD including vWF on the risk of sTE. Older age compared to age ≤ 5 yr. [Odds Ratio (OR) 1.9, p=0.029] and non-O blood-group (OR 4.27, p=0.028) compared to O group were identified as independent predictors for development of sTE. Patients with peripheral blasts had higher odds of developing sTE (OR 7.79; p=0.059).The sTE-free survival was affected by older age (Hazard ratio (HR) 1.1, p 0.03), ALL risk type (HR 3.0, p 0.025) and blood group (O blood group vs non-O blood group, HR 0.23, p 0.03). Table 1 compares the vWF levels in patients with O and non-O blood group and those with and without circulating blasts. Overall, there was no difference in the vWF level at ALL diagnosis between patients with O vs. Non-O blood group. Patients with circulating blasts had higher levels of vWF at ALL diagnosis compared to those without circulating blasts; this comparison was statistically significant for non-O blood group. However, there was no interaction between ABO blood group and circulating blasts on vWF levels (p=0.723)  Conclusion : There was no effect of blood group type on the vWF level at diagnosis of ALL. Patients with circulating blasts had significantly higher levels of vWF at ALL diagnosis and the vWF levels were significantly higher in patients with non-O blood group and circulating blasts. Although it is likely that the relationship between blood group and vWF may be affected by effect of circulating blasts on vWF, we showed no interaction between ABO blood groups and circulating blasts on the vWF levels at diagnosis of ALL in children. Small sample size is a limitation of current study. Further studies with larger sample size are needed to elaborate the relationship between vWF, ABO blood groups, and circulating blasts. Disclosures No relevant conflicts of interest to declare.


2020 ◽  
pp. 31-33

The distribution ABO blood groups among patients with breast cancer were as follow: blood group type O (40.8%), blood group type A (25.0%), B (23.7%), and AB (10.4%), for the donor’s healthy control, ABO blood groups percentages were as follow: type O (39.9%) type A (28.1%), type B (22.0%), and type AB (9.9%). There is no significant association between blood types ABO and the breast cancer. (P > 0.05) Rh factor has a significant difference between patients with breast cancer and healthy control (P=0.002). There were significant differences in age categories among patients with breast cancer and controls. (p= 0.000) .


Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 3314-3314
Author(s):  
Jill M. Johnsen ◽  
Kerry W Lannert ◽  
Ermias Yohannes ◽  
Xiomara Castillo ◽  
Karl C. Desch

Abstract Abstract 3314 ABO(H) is a carbohydrate blood group system primarily expressed on red cells, blood vessels, and mucosal surfaces. ABO blood group is known to influence von Willebrand Factor (VWF) levels, with low VWF associated with blood group O and increased diagnosis of von Willebrand Disease. Conversely, non-O blood group is associated with high VWF levels, and both non-O blood group and high VWF are associated with thrombotic vascular disease. We sought to characterize VWF levels relative to ABH glycan phenotypes in 1129 individuals from a healthy sibling cohort, the Genes and Blood Clotting Cohort (GABC). VWF:Ag levels were determined by AlphaLISA (Perkin Elmer) in platelet poor plasma. ABH forensic techniques were adapted to samples of RBC-rich, frozen buffy coat in the study repository. In brief, buffy coat fractions were diluted in TBS, applied to nitrocellulose, and A and B glycans detected using murine monoclonal anti-A (Immucor) or murine monoclonal anti-B (Immucor) followed by and streptavidin-conjugated donkey anti-mouse IgG HRP (Jackson ImmunoResearch). A biotinylated Ulex europaeus agglutinin (UEA lectin, Vector Labs) was used to detect H, followed by streptavidin-HRP. Blots were imaged using ImageQuant (GE) and scored semi-quantitatively for glycan density by two blinded independent observers using reference buffy coats from normal blood donors. ABO blood group frequencies were similar to that of the U.S. population (O=40%, A=42%, B=12%, AB=6%). Also consistent with previous reports, VWF:Ag levels varied significantly between ABO blood groups (O<A<B=AB, see Table 1). Within blood group A, we observed variation in A glycan density (scored 1+ to 3+). Lower A glycan density (similar to the A2 reference) correlated significantly (p<0.01) with lower VWF:Ag levels (see Table 1), and also appeared to have higher detectable H antigen. We also observed wide variation in H glycan density (scored 1+ to 5+). Overall, detection of A and B glycan density patterns were inversely related to H glycan, consistent with glycosylation of H by the ABO enzyme. Interestingly, higher H density correlated significantly (p<0.01) with lower VWF:Ag levels, even within blood group O (see Table 2). In summary, ABH glycan variation may impact VWF in a more complex fashion than previously suspected. Although these data are limited to semi-quantitative analyses by the heterogeneous nature of RBC-rich buffy coat, our findings are consistent with expectations for major ABO blood group frequencies and show that variation of RBC rich-buffy coat ABH glycan density within and between ABO blood groups correlates with VWF:Ag level. This work also suggests a previously unsuspected association between VWF and variation in H antigen, which we hypothesize may be due to variation in the FUT genes or other loci affecting H glcosylation patterns. Further work to characterize the complexity of the ABH carbohydrate system and its genetic determinants is warranted to better understand the impact of ABH subtypes on VWF and vascular phenotypes. Table 1. ABO Blood Groups, Buffy Coat A Glycan Density, and VWF:Ag Level Number of Subjects ABO Blood Group VWF:Ag (+/−1SD) VWF Difference (Ovs.Avs.Bvs.AB)* Difference from Group O* 454 O 90+/−35 473 A 119+/−45 p<0.01 p<0.01 138 B 130+/−50 p<0.01 p<0.01 64 AB 128+/−52 NS p<0.01 Number of Subjects A Glycan Density Avg H Glycan Density VWF:Ag (+/−1SD) VWF Difference (A1+vs.2+vs.3+)* Difference from A 1+* 68 1+ 3.5 98+/−40 195 2+ 2.4 123+/−44 p<0.01 p<0.01 210 3+ 2.0 123+/−45 NS p<0.01 * Each section above: One-way ANOVA; post-hoc Tukey's Least Significant Difference. Table 2. Buffy Coat H Glycan Density and VWF:Ag Level H Glycan Density in All Subjects Number of Subjects H Glycan Density VWF:Ag (+/−1SD) VWF Difference (H1vs.2vs.3vs.4vs.5)* Difference from H 1+* 52 1+ 135+/−46 257 2+ 130+/−53 NS NS 260 3+ 117+/−44 p<0.01 p<0.01 307 4+ 99+/−37 p<0.01 p<0.01 252 5+ 88+/−32 p<0.05 p<0.01 H Glycan Density in Blood Group O Subjects Number of Subjects H Glycan Density** VWF:Ag (+/−1SD) VWF Difference (H3+vs.4+vs.5+)* Difference from H 3+* 29 3+ 115+/−57 207 4+ 92+/−33 p<0.01 p<0.01 214 5+ 85+/−30 NS p<0.01 * One-way ANOVA; post-hoc: Tukey's Least Significant Difference. ** No blood group O individuals scored <3+ H glycan density. Disclosures: No relevant conflicts of interest to declare.


2020 ◽  
Vol 5 (02) ◽  
pp. 111-116
Author(s):  
Rachana Katna ◽  
Ch Srinivasa Rao ◽  
Aswin Kumar M. ◽  
Farheen Fatima ◽  
Madhuri Taranikanti

Abstract Objectives The present study was designed to explore the relation between ABO blood group and cardiovascular risk factors in the patients attending tertiary care hospital in South India. Materials and Methods One hundred nine patients, each male and female with different cardiovascular diseases, were included in the study and their ABO blood groups were analyzed with the cardiovascular risk factors. A detailed history was taken from all the patients regarding cardiovascular risk factors like high blood pressure, diabetes, and lipidemic. Total cholesterol, high density lipoprotein (HDL) cholesterol, low density lipoprotein (LDL) cholesterol, and serum triglycerides were determined for assessing lipidemia. Blood grouping was done using standard tube technique. Red cell and serum grouping was performed and results documented. Association between ABO blood groups and cardiovascular risk factors was done using chi-square test and Spearman’s correlation. Results The distribution of ABO blood groups shows that blood group O (41.28%) was more common in patients followed by group B (29.36%), group A (19.27%), and group AB (10.09%). One-hundred six cases (97.2%) were Rh D positive. A statistically significant difference was observed between gender and total cholesterol, LDL cholesterol and BMI with p value <0.05. In the study population, distribution of major cardiovascular risk factors, especially diabetes mellitus and dyslipidaemia, with ABO blood groups shows that there was no significant difference observed between blood groups and these cardiovascular risk factors. However, statistical significance was there between blood group O and hypertension (p = 0.03). Conclusion There was no significant difference between the blood groups and the major cardiovascular risk factors were diabetes and lipids, but there was an association between blood group O and hypertension.


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