High Frequency of Unusual ABO Alleles in Patients with Leukemia.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 2712-2712
Author(s):  
Marcia C.Z. Novaretti ◽  
Madalena M.N.S. Pares ◽  
Alexandre E. Domingues ◽  
Pedro E. Dorlhiac-llacer ◽  
Dalton A.F. Chamone
Keyword(s):  
Blood Group ◽  
Blood Donors ◽  
Catalytic Domain ◽  
Test Technique ◽  
Single Nucleotide ◽  
Pcr Screening ◽  
Specific Pcr ◽  
Group A ◽  
Group B

Abstract Background: Mutations critical for ABO group phenotypes which encode the catalytic domain of ABO glycosyltransferases have been studied in healthy blood donors. Weakening of A and B transferases have been reported in patients with leukemia, particularly those in which the myeloid lineage is involved. The purpose of this study was to use sequence specific PCR (PCR-SSP) to perform ABO genotyping of leukemic patients. Material and Methods: A total of 108 unrelated leukemic patients were initially classified serologically using tube test technique and gel test for ABO typing and subgroup detection. Genomic DNA was prepared from peripheral blood cells. All samples were then screened by 32 different PCR-SSP, each specific for a single nucleotide variation to screen 16 known polymorfic sites of exons 6 and 7 (modified from Seltsam, Transfusion 2003,43(4):428–39. Results: The results of PCR screening were conclusive and consistent with the ABO phenotypes in 71 patients (65.07%). Common ABO alleles were found in only 15 (13.8%) of patients studied. Unusual ABO alleles were found in 26 of 28 blood group O patients (ABO*O05, ABO*O21, ABO*O30, ABO*O33, ABO*O35, ABO*O36, ABO*O43 and ABO*O45), in 20 of 43 blood group A patients (ABO*A103, ABO*A104, ABO*A106, ABO*A202, ABO*A203), in 8 of 10 blood group B patients (ABO*B104, ABO*B105) and in 2 of 4 AB blood group patients (ABO*Bx01, ABO*B103). In 37 patients (34.2%), PCR screening revealed allele combinations that were incompatible with known ABO allele combinations or subgroups predicted by serologic analysis. Conclusion: This is the first report of using PCR-SSP for ABO genotyping of leukemic patients. The pathophysiologic role of unusual ABO allele combinations in patients with leukemia warrants further investigation.

scholarly journals AB0-incompatibility of mother and fetus: the role of anti-glycan alloantibodies in the hemolytic disease of newborns

2021 ◽  
Vol 23 (1) ◽  
pp. 17-34
Author(s):  
P. S. Obukhova ◽  
A. V. Kachanov ◽  
N. A. Pozdnyakova ◽  
M. M. Ziganshina
Keyword(s):  
Red Blood Cells ◽  
Blood Group ◽  
Blood Cells ◽  
Hemolytic Disease ◽  
Disease Condition ◽  
Mother And Child ◽  
Group A ◽  
Group B ◽  
Maternal Igg

The mother and fetus incompatibility due to Rh-factor, blood group or other blood factors can lead to hemolytic disease of the fetus and newborn (HDN). HDN is a clinical disease condition of the fetus and newborn as a result of hemolysis, when maternal IgG alloantibodies cross the placenta and destroy the red blood cells of the fetus and newborn. The child disease begins in utero and can dramatically increase immediately after birth. As a result, hyperbilirubinemia and anemia develop, that can lead to abortions, serious complications, or death of the neonates in the absence of proper therapy. The range of HDN has changed significantly now compared to previous decades. Half a century ago, HDN was considered an almost complete synonym of RhD-alloimmunization, and this was a frequent problem for newborns. By now due to the high effective of Rh-conflict prevention, immunological AB0-conflicts have become the most common cause of HDN. The review aimes to one of the main causes of jaundice and anemia in neonates at present, i.e. HDN due to immunological AB0-conflict of mother and newborn (AB0-HDN). The main participants of the AВ0- incompatibility mother and child are considered, namely A- and B-glycans, as well as the corresponding anti-glycan alloantibodies. Close attention is paid to the structure features of glycan alloantigens on the red blood cells of the fetus and adult. The possible correlation of the frequency and severity of HDN with the blood group of mother and child, as well as with the titer of maternal alloantibodies, has been considered. The influence of immunoglobulin G subclasses on the AB0-HDN development has been evaluated. In most cases, AB0-HDN appear when the mother has the blood group 0, and the fetus has the group A (subgroup A1) or the group B. Other rare incidences of AB0-incompatibility with severe course are occurred. As a whole the etiology of AB0-HDN is complex and the HDN severity is influenced by many factors. The authors have analyzed statistical data, as well as the prevalence of AB0-incompatibility and AB0-HDN in various regions of the world. Current approaches to the diagnosis of AB0-HDN are discussed in addition. By now the problems of AB0- HDN occurrence and developing of ways to overcome this disease remain relevant.

scholarly journals Association of Viral Hepatitis with ABO Blood Group in apparently Normal Iraqi Blood Donors

2020 ◽  
Vol 10 (03) ◽  
pp. 421-425
Author(s):  
Suad Azeez Hassan ◽  
Suhair Hassan Alkutbi ◽  
Eman S. Nassir ◽  
Haider Hassan Lilo
Keyword(s):  
Hepatitis B ◽  
Blood Group ◽  
Blood Donors ◽  
Blood Groups ◽  
Public Health Issue ◽  
Blood Group A ◽  
B Virus ◽  
Group A ◽  
Group B ◽  
Apparently Healthy

Hepatitis B virus (HBV) and hepatitis C virus (HCV) infections are counted as a public health issue worldwide. The virus is transmitted to infect others through blood and blood products. Appointed blood groups and Rh-positive are more prone to the transmission of the infection by blood transfusion. The aim of this study is to find out the frequency of hepatitis B and C in apparently healthy blood donors and whether there is an association between ABO and Rh blood groups. ABO blood groups and their relationship with HBV and HCV infections were studied in 87,124 blood donors of both genders. Out of these donors, 353 individuals were found to be infected with HBV and HCV with a ratio of 1:250. The study was conducted between January to June 2018, which was presented to the Central Blood Bank in Baghdad and Al-Razi Medical Centre. It found that most hepatitis B and C blood donors were blood group O with a prevalence of 33.7 and 45.5%, respectively, while the results for those with blood group A showed 28.5 and 22.7% HBV and HCV infections, respectively. On the other hand, the incidence of HBV in individuals with blood group B was 29.8%, and HCV was 23.8%. AB blood group donors demonstrated the least incidence at 7.9% for both HBV and HCV. In conclusion, it has been found that there is a significant association between blood groups and Rh factor with hepatitis B and C infections.

scholarly journals Distribution of ABO, Rhesus D and Subgroups of ABO among Blood Donors in Sokoto, North Western Nigeria

2020 ◽  
pp. 6-13
Author(s):  
A. B. Ibrahim ◽  
H. Attahiru ◽  
O. Erhabor ◽  
P. F. Udomah ◽  
A. Yakubu ◽  
...  
Keyword(s):  
Blood Group ◽  
Blood Donors ◽  
Blood Groups ◽  
Blood Group A ◽  
Significant Difference ◽  
Tile Method ◽  
Group A ◽  
The Common ◽  
Group B ◽  
North Western

ABO, Rhesus D and subgroups of ABO are highly immunogenic and are the common cause of antibody production in mismatched blood transfusions, haemolytic transfusion reaction and maternal alloimmunization. The aim of this study was to determine the occurrence of ABO, Rh D and subgroups of ABO among blood donors attending Specialist Hospital Sokoto, Nigeria. ABO, Rhesus D and subgroups of ABO antigen status of 176 blood donors with mean age of 30.44 ± 8.210 years attending Specialist Hospital Sokoto were determined using tile method for ABO and Rh D and conventional tube method for anti- A1, anti- H reagents for ABO subgroups respectively. Among the 176 subjects tested, blood group O+ was the most frequent group with 93 (52.8%), 39 (22.2%) were blood group B+, 37(21.0%) were blood group A+, 5 (2.8%) were blood group AB+, 2 (1.1%) were blood group O-. No data was obtained for A-, B- and AB- blood groups.  Out of 37 A blood groups obtained, 31 (83.8%) had A1 antigens and 6 (16.2%) had A2 antigens. Out of the 5 AB blood groups, all had A1B antigens. The study also shows that there was statistically significant difference between blood group A and ethnic groups (Hausa, Fulani and Yoruba) (p<0.05). Blood group O was found to be the most frequent followed by B, A and AB except among Hausa which revealed a pattern of O> A> B> AB. ABO, subgroups shows majority had A1 followed by A2 and A1B respectively.

scholarly journals Prevalence of ABO and Rh blood groups and their association with Transfusion-Transmissible Infections (TTIs) among Blood Donors in Islamabad, Pakistan

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Muhammad Yousaf Khan ◽  
Farwa Sijjeel ◽  
Ahmareen Khalid ◽  
Rukhshan Khurshid ◽  
Umm E Habiba ◽  
...  
Keyword(s):  
Viral Infection ◽  
Blood Group ◽  
Blood Donors ◽  
Blood Groups ◽  
Abo Blood Group ◽  
Blood Group System ◽  
Syphilis Infection ◽  
Group System ◽  
Group A ◽  
Group B

Certain Rh positive blood groups showed a link between the ABO blood grouping and susceptibility to some infectious ailments. Study was carried out to find the association of ABO Blood Group System / Rh type with different viral infection. A retrospective observational study was carried in 7631 blood donors to find the association of ABO Blood Group System / Rh type with viral infection due to hepatitis B virus, hepatitis C virus, human immunodeficiency virus and Syphilis. Data of the study indicateF that the highest incidence of blood group in blood donor was B followed by O, A and AB. The incidence of HBsAg +ve, HCV Ab +ve and infection of Syphilis was also highest in donor with blood group B followed by O, A and AB. Blood group A were more susceptible to HIV Ab +ve followed by blood group B, O and AB. The group B donors had the greatest risk of viral infection with HBV, HCV, HIV, and Syphilis; followed by the groups O, A, and AB. Donors in group AB had the lowest incidence rate of all viral infection. The study revealed that blood group B is most prevalent among donors, followed by blood groups O, A, and AB. On the other side, the rate of HBV, HCV, HIV, and Syphilis infection was greatest among group B donors, followed by group O, group A, and group AB. Copyright(c) The Authors

Tissue Ki67 proliferative index expression and pathological changes in hemodialysis arteriovenous fistulae: Preliminary single-center results

2021 ◽  
pp. 112972982110154
Author(s):  
Raffaella Mauro ◽  
Cristina Rocchi ◽  
Francesco Vasuri ◽  
Alessia Pini ◽  
Anna Laura Croci Chiocchini ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Hot Spot ◽  
Wall Thickening ◽  
Proliferating Cells ◽  
Ki 67 ◽  
Group A ◽  
The Mean ◽  
Set Up ◽  
Group B

Background: Arteriovenous fistula (AVF) for hemodialysis integrates outward remodeling with vessel wall thickening in response to drastic hemodynamic changes. Aim of this study is to determine the role of Ki67, a well-established proliferative marker, related to AVF, and its relationship with time-dependent histological morphologic changes. Materials and methods: All patients were enrolled in 1 year and stratified in two groups: (A) pre-dialysis patients submitted to first AVF and (B) patients submitted to revision of AVF. Morphological changes: neo-angiogenesis (NAG), myointimal thickening (MIT), inflammatory infiltrate (IT), and aneurysmatic fistula degeneration (AD). The time of AVF creation was recorded. A biopsy of native vein in Group A and of arterialized vein in Group B was submitted to histological and immunohistochemical (IHC) analysis. IHC for Ki67 was automatically performed in all specimens. Ki67 immunoreactivity was assessed as the mean number of positive cells on several high-power fields, counted in the hot spots. Results: A total of 138 patients were enrolled, 69 (50.0%) Group A and 69 (50.0%) Group B. No NAG or MIT were found in Group A. Seven (10.1%) Group A veins showed a mild MIT. Analyzing the Group B, a moderate-to-severe MIT was present in 35 (50.7%), IT in 19 (27.5%), NAG in 37 (53.6%); AD was present in 10 (14.5%). All AVF of Group B with the exception of one (1.4%) showed a positivity for Ki67, with a mean of 12.31 ± 13.79 positive cells/hot spot (range 0–65). Ki67-immunoreactive cells had a subendothelial localization in 23 (33.3%) cases, a myointimal localization in SMC in 35 (50.7%) cases. The number of positive cells was significantly correlated with subendothelial localization of Ki67 ( p = 0.001) and with NA ( p = 0.001). Conclusions: Native veins do not contain cycling cells. In contrast, vascular cell proliferation starts immediately after AVF creation and persists independently of the time the fistula is set up. The amount of proliferating cells is significantly associated with MIT and subendothelial localization of Ki67-immunoreactive cells, thus suggesting a role of Ki-67 index in predicting AVF failure.

scholarly journals High Basal Maximal Standardized Uptake Value (SUVmax) in Follicular Lymphoma Identifies Patients with a Low Risk of Long-Term Relapse

Cancers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2876
Author(s):  
Giovanni Manfredi Assanto ◽  
Giulia Ciotti ◽  
Mattia Brescini ◽  
Maria Lucia De Luca ◽  
Giorgia Annechini ◽  
...  
Keyword(s):  
Risk Factors ◽  
Follicular Lymphoma ◽  
Standardized Uptake Value ◽  
Metabolic Tumor Volume ◽  
Late Relapse ◽  
Prognostic Role ◽  
Pet Ct ◽  
Group A ◽  
Group B

Background: Despite that the unfavorable prognostic role of a high Total Metabolic Tumor Volume (TMTV) in Follicular Lymphoma has been demonstrated, the role of SUVmax alone at baseline PET/CT could have a different prognostic role. Patients and Methods: We performed a retrospective observational monocentric cohort study. All patients affected by FL who underwent a basal PET/CT were included. Two subgroups were identified and compared in terms of PFS and OS: (A) Basal SUVmax ≤ 6; and (B) Basal SUVmax > 6. Results: Ninety-four patients were included, 34 in group A (36.2%) and 60 in group B (63.8%). The PFS at two years was comparable in the two groups (97%). The five-year PFS was 73.5% for group A and 95% for group B (p 0.005). The five-year PFS in the whole cohort was 87.5%. A clear advantage was confirmed in group A in the absence of other risk factors. Patients with SUVmax ≤ 6 and no risk factors showed a 5-year PFS of 73% against 83% for patients with SUVmax > 6 and at least two risk factors. Conclusion: A high FDG uptake favorably correlated with PFS. A low basal SUVmax reflected a higher rate of late relapse requiring a prolonged follow-up. The basal SUVmax is an approachable parameter with prognostic implications.

scholarly journals Clinical significance of late diastolic tissue doppler parameters after onset of STEMI: from the view point of the timing of the echocardipography

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
N Iwahashi ◽  
J Kirigaya ◽  
M Horii ◽  
T Abe ◽  
E Akiyama ◽  
...  
Keyword(s):  
Tissue Doppler ◽  
Atrial Function ◽  
Diastolic Velocity ◽  
Long Time ◽  
Group A ◽  
St Elevation ◽  
Group B ◽  
First Time

Abstract Background The early transmitral flow velocity (E) divided by the early diastolic velocity of the mitral valve annulus (e') is referred to as the “E/e' ratio,” is useful even for ST elevation acute myocardial infarction (STEMI). However, the role of late diastolic velocity (a') which reveals the atrial function for STEMI is still unclear. Objectives We evaluated the clinical usefulness of tissue Doppler including atrial function for a first-time STEMI by long time follow up. Furthermore, we evaluated the meaning of each parameters by performing immediately after PCI or 2 weeks later. Methods We treated consecutive 571 first-time STEMI patients by immediate PCI within 12 hours after onset, and we examined 270 patients at immediately after PCI (GroupA, 65 years, 250 male) and 301 patients at 2 weeks after onset (GroupB, 64 years, 243 male). We examined trans mitral flow and TDI, then defined E/e' as LV filling pressure and A/a' as left atrial function. We followed them for a long time (&gt;5 years). The primary end point (PE) was cardiac death or re-admission for heart failure (HF). Results We followed the patients in Group A for 10 years, Group B for 5 years. PE occurred in 64 patients in GroupA during 10 years, and 45 patients in GroupB during 5 years. We analyzed the univariate and multivariate Cox hazard analyses and we compared e' and a', E/e' and A/a' (Table). In GroupA, a' and A/a' were the independent predictors, on the other hand neither a' nor A/a' were the predictors in GroupB. E/e' was an independent predictor both in GroupA and B. Conclusion TDI parameters have different meanings by the timing of echocardiography after onset of a first-time STEMI. These results demonstrated that atrial dysfunction immediately after onset of STEMI suggests the poor prognosis after STEMI. Cox Hazard Proportional Analysis Funding Acknowledgement Type of funding source: None

scholarly journals ABO groups can play a role in susceptibility and severity of COVID-19

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
S. Samra ◽  
M. Habeb ◽  
R. Nafae
Keyword(s):  
Blood Group ◽  
Abo Blood Group ◽  
Infection Group ◽  
Mechanically Ventilated ◽  
Blood Group A ◽  
Group A ◽  
Study Population ◽  
Group B ◽  
The Relationship ◽  
Seriously Ill

Abstract Background A few people infected by the coronavirus become seriously ill, while others show little to no signs of the symptoms, or are asymptomatic. Recent researches are pointing to the fact that the ABO blood group might play an important role in a person’s susceptibility and severity of COVID-19 infection. Aim of the study: try to understand the relationship between ABO groups and COVID-19 (susceptibility and severity). Results A total of (507) patients were included in this study. The study population was divided based on the ABO blood group into types A+, A−, B+, AB, O+, and O−. Blood group A was associated with high susceptibility of infection: group A, 381 (75.1%); and less common in group O, 97 (19.2%), group B, 18 (3.5%), and group AB, 11 (2.2%). The severity of COVID-19 infection was common in non-blood group O where (20 (7.1%), 4 (26.7%), 2 (11%), and 1 (9%) in type A+, A−, B+, and AB, respectively), while in type O 3.1%. And mechanically ventilated patients were 22 (5.9%), 2 (13.4%), 2 (11.1%), and 1 (1%). Mortality was high in blood groups A and B, 16 (4.37%) and 1 (5.5%), respectively, while in blood group O, it was 1%. Conclusion The incidence, severity, and mortality of COVID-19 were common in non-blood group O. While blood group O was protected against COVID-19.

scholarly journals Role of Prophylactic Antibiotics in the Management of Postoperative Endodontic Pain

2015 ◽  
Vol 16 (12) ◽  
pp. 939-943 ◽  
Author(s):  
Leena Alsomadi ◽  
Riyad Al Habahbeh
Keyword(s):  
Pain Scale ◽  
Prophylactic Antibiotics ◽  
Post Treatment ◽  
Endodontic Treatment ◽  
Significant Difference ◽  
Group A ◽  
Inflammatory Drugs ◽  
Anti Inflammatory ◽  
Group B

ABSTRACT Aim To investigate the efficacy of using antibiotics in post endodontic treatment as a method to alleviate post-treatment pain. Materials and methods After completion of endodontic treatment 129 patients were randomly divided into two groups: Group A (65 patients) received Ibuprofen 400 mg one tablet before procedure and one tablet every 8 hours for the first day, then one tablet once indicated by pain. Group B (64 patients) received the same regimen as group A in addition to amoxicillin, clavulanic acid tablets (one tablet before the procedure, and then one tablet twice daily for a total of 3 days). Intensity of pain at 8 hours interval using visual analog scale (VAS) and total number of Ibuprofen tablets used was recorded by patients. Results Peak postoperative pain occurred at 16 hours posttreatment in both groups, there was a significant difference in the pain scale between the two groups in favor for group B over group A (3.8 vs 2.1 respectively). Pain scale was significantly lower in group B at 24, 32, 40, and 48 hours post-treatment with a p-value of < 0.05. The pain scale at 56, 64 and 72 hours were also less in group B, although could not show up as statistical difference. Patients in group A used statistically significant more Ibuprofen than patients in group B (486 vs 402). Conclusion Antibiotic prescription to manage post endodontic treatment pain results in less pain with less consumption of Ibuprofens. Clinical significance Pain management in endodontics is a real challenge, nonsteroidal anti-inflammatory drugs (NSAIDS) are used effectively in many patients to alleviate post endodontic pain. Nonsteroidal anti-inflammatory drugs may have adverse reactions or may be contraindicated. Short-term use of antibiotics to alleviate pain can be of clinical benefits in these patients. How to cite this article Alsomadi L, Al Habahbeh R. Role of Prophylactic Antibiotics in the Management of Postoperative Endodontic Pain. J Contemp Dent Pract 2015;16(12):939-943.

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