scholarly journals Histo-Blood Group Antigens in Children with Symptomatic Rotavirus Infection

Viruses ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 339 ◽  
Author(s):  
Raúl Pérez-Ortín ◽  
Susana Vila-Vicent ◽  
Noelia Carmona-Vicente ◽  
Cristina Santiso-Bellón ◽  
Jesús Rodríguez-Díaz ◽  
...  
Keyword(s):  
Blood Group ◽  
Control Group ◽  
Human Populations ◽  
Blood Group Antigens ◽  
Symptomatic Infection ◽  
Rotavirus Infection ◽  
Rotavirus Gastroenteritis ◽  
Group A Rotaviruses ◽  
Group A ◽  
Prevalent Strain

Group A rotaviruses are a major cause of acute gastroenteritis in children. The diversity and unequal geographical prevalence of rotavirus genotypes have been linked to histo-blood group antigens (HBGAs) in different human populations. In order to evaluate the role of HBGAs in rotavirus infections in our population, secretor status (FUT2+), ABO blood group, and Lewis antigens were determined in children attended for rotavirus gastroenteritis in Valencia, Spain. During three consecutive years (2013–2015), stool and saliva samples were collected from 133 children with rotavirus infection. Infecting viral genotypes and HBGAs were determined in patients and compared to a control group and data from blood donors. Rotavirus G9P[8] was the most prevalent strain (49.6%), followed by G1P[8] (20.3%) and G12P[8] (14.3%). Rotavirus infected predominantly secretor (99%) and Lewis b positive (91.7%) children. Children with blood group A and AB were significantly more prone to rotavirus gastroenteritis than those with blood group O. Our results confirm that a HBGA genetic background is linked to rotavirus P[8] susceptibility. Rotavirus P[8] symptomatic infection is manifestly more frequent in secretor-positive (FUT2+) than in non-secretor individuals, although no differences between rotavirus G genotypes were found.

scholarly journals Dual Recognition of Sialic Acid and αGal Epitopes by the VP8* Domains of the Bovine Rotavirus G6P[5] WC3 and of Its Mono-reassortant G4P[5] RotaTeq Vaccine Strains

2019 ◽  
Vol 93 (18) ◽  
Author(s):  
Mia Madel Alfajaro ◽  
Ji-Yun Kim ◽  
Laure Barbé ◽  
Eun-Hyo Cho ◽  
Jun-Gyu Park ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Blood Group ◽  
Intestinal Epithelial Cells ◽  
Sialic Acids ◽  
Blood Group Antigens ◽  
Intestinal Epithelial ◽  
Content Type ◽  
Group A Rotaviruses ◽  
Group A ◽  
Small Intestinal

ABSTRACTGroup A rotaviruses, an important cause of severe diarrhea in children and young animals, initiate infection via interactions of the VP8* domain of the VP4 spike protein with cell surface sialic acids (SAs) or histo-blood group antigens (HBGAs). Although the bovine G6P[5] WC3 strain is an important animal pathogen and is also used in the bovine-human reassortant RotaTeq vaccine, the receptor(s) for the VP8* domain of WC3 and its reassortant strains have not yet been identified. In the present study, HBGA- and saliva-binding assays showed that both G6P[5] WC3 and mono-reassortant G4P[5] strains recognized the αGal HBGA. The infectivity of both P[5]-bearing strains was significantly reduced in αGal-free MA-104 cells by pretreatment with a broadly specific neuraminidase or by coincubation with the α2,6-linked SA-specificSambucus nigralectin, but not by the α2,3-linked specific sialidase or byMaackia amurensislectin. Free NeuAc and the αGal trisaccharide also prevented the infectivity of both strains. This indicated that both P[5]-bearing strains utilize α2,6-linked SA as a ligand on MA104 cells. However, the two strains replicated in differentiated bovine small intestinal enteroids and in their human counterparts that lack α2,6-linked SA or αGal HBGA, suggesting that additional or alternative receptors such as integrins, hsp70, and tight-junction proteins bound directly to the VP5* domain can be used by the P[5]-bearing strains to initiate the infection of human cells. In addition, these data also suggested that P[5]-bearing strains have potential for cross-species transmission.IMPORTANCEGroup A rotaviruses initiate infection through the binding of the VP8* domain of the VP4 protein to sialic acids (SAs) or histo-blood group antigens (HBGAs). Although the bovine G6P[5] WC3 strain is an important animal pathogen and is used as the backbone in the bovine-human reassortant RotaTeq vaccine, the receptor(s) for their P[5] VP8* domain has remained elusive. Using a variety of approaches, we demonstrated that the WC3 and bovine-human mono-reassortant G4P[5] vaccine strains recognize both α2,6-linked SA and αGal HBGA as ligands. Neither ligand is expressed on human small intestinal epithelial cells, explaining the absence of natural human infection by P[5]-bearing strains. However, we observed that the P[5]-bearing WC3 and G4P[5] RotaTeq vaccine strains could still infect human intestinal epithelial cells. Thus, the four P[5] RotaTeq vaccine strains potentially binding to additional alternative receptors may be efficient and effective in providing protection against severe rotavirus disease in human.

Does Having Rotavirus Infection in Early Childhood Increase the Risk of Celiac Disease?

2021 ◽  
Author(s):  
Meryem Keceli Basaran ◽  
Caner Dogan ◽  
Mahmut Bal ◽  
Seda Geylani Gulec ◽  
Nafiye Urganci
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Celiac Disease ◽  
Genetic Factors ◽  
Pediatric Patients ◽  
Control Group ◽  
Rotavirus Infection ◽  
Rotavirus Gastroenteritis ◽  
Significant Difference ◽  
Espghan Guidelines

Abstract Objective With the increasing prevalence of celiac disease (CD) in the population, possible risk factors are under investigation. Environmental and genetic factors that trigger the immune response have been analyzed for many years. This study investigates the presence of CD in children with rotavirus infection. Rotavirus infection is thought to be a risk factor for CD. Methods Included in the study were 105 of 160 pediatric patients hospitalized due to symptomatic rotavirus infection between 2012 and 2018. These children were screened for CD 45.6 ± 18.2 (14–90) months following the rotavirus infection diagnosed with CD as per ESPGHAN guidelines. Results A total of 105 pediatric patients who had rotavirus gastroenteritis were included in the study. The age of the children with rotavirus infection was 3.98 ± 1 (2–6) months. In terms of CD, it was 45.6 ± 18.2 months. Around 14 to 90 months later, patients were called for control. CD developed in four (3.8%) of the children with rotavirus, whereas none of the children in the control group developed CD. Conclusion Rotavirus infection may be a risk factor for CD through immune mechanisms. There are genetic and various environmental factors for the development of CD. Although the CD's occurrence on children who had rotavirus gastroenteritis in our study also supported this situation, there was no statistically significant difference.

scholarly journals Heterogeneic expression of blood group A and H isoantigens in bladder tumors: association with nuclear volume.

1989 ◽  
Vol 37 (7) ◽  
pp. 1153-1155 ◽  
Author(s):  
T F Orntoft ◽  
K Nielsen
Keyword(s):  
Blood Group ◽  
Transitional Cell ◽  
Antigen Expression ◽  
Nuclear Volume ◽  
Intratumor Heterogeneity ◽  
Blood Group Antigens ◽  
Pathological Grade ◽  
Blood Group A ◽  
Group A ◽  
The Mean

Intratumor heterogeneity is a major problem in immunodiagnosis and treatment of carcinomas. To elucidate the well-known heterogeneity in transitional-cell carcinomas of the ability to express blood group ABO isoantigens, a stereological estimate of the mean nuclear volume in areas expressing blood group antigens was compared to the estimate from areas of identical pathological grade at which antigen expression was deleted. Four microscopic fields were examined from antigen-positive and four from antigen-negative areas in sections from 21 blood group O and 20 blood group A individuals. The sections were stained before examination by an indirect peroxidase method using monoclonal anti-H and anti-A antibodies. The mean nuclear volume increased, as expected, with increasing pathological grade. In blood group O individuals the mean nuclear volume was 241.5 microns 3 in antigen-positive areas and 338.2 microns 3 in antigen-negative areas (2p less than 0.0005) of identical pathological grade. In group A individuals the mean nuclear volume was 217.1 microns 3 in positive areas and 351.1 microns 3 in corresponding negative areas (2p less than 0.0025). The variation in volume parameter was essentially caused by a true variation between tumors (greater than 82%). The results indicate a complex biological mechanism associated with the cellular ability to express blood group antigens.

scholarly journals Blood Group A Antigen Is a Coreceptor inPlasmodium falciparum Rosetting

2000 ◽  
Vol 68 (5) ◽  
pp. 2971-2975 ◽  
Author(s):  
Antonio Barragan ◽  
Peter G. Kremsner ◽  
Mats Wahlgren ◽  
Johan Carlson
Keyword(s):  
Blood Group ◽  
Blood Cells ◽  
Malaria Parasite ◽  
General Feature ◽  
Enzymatic Digestion ◽  
Clinical Isolates ◽  
Rosette Formation ◽  
Blood Group Antigens ◽  
Blood Group A ◽  
Group A

ABSTRACT The malaria parasite Plasmodium falciparum utilizes molecules present on the surface of uninfected red blood cells (RBC) for rosette formation, and a dependency on ABO antigens has been previously shown. In this study, the antirosetting effect of immune sera was related to the blood group of the infected human host. Sera from malaria-immune blood group A (or B) individuals were less prone to disrupt rosettes from clinical isolates of blood group A (or B) patients than to disrupt rosettes from isolates of blood group O patients. All fresh clinical isolates and laboratory strains exhibited distinct ABO blood group preferences, indicating that utilization of blood group antigens is a general feature of P. falciparumrosetting. Soluble A antigen strongly inhibited rosette formation when the parasite was cultivated in A RBC, while inhibition by glycosaminoglycans decreased. Furthermore, a soluble A antigen conjugate bound to the cell surface of parasitized RBC. Selective enzymatic digestion of blood group A antigen from the uninfected RBC surfaces totally abolished the preference of the parasite to form rosettes with these RBC, but rosettes could still form. Altogether, present data suggest an important role for A and B antigens as coreceptors in P. falciparum rosetting.

scholarly journals Histochemical reactivity of the Geodia cydonium agglutinin (GCA) in human tissues.

1991 ◽  
Vol 39 (4) ◽  
pp. 491-505 ◽  
Author(s):  
M Vierbuchen ◽  
G Uhlenbruck ◽  
F G Hanisch ◽  
W E Müller ◽  
M Ortmann ◽  
...  
Keyword(s):  
Binding Site ◽  
Blood Group ◽  
Lectin Binding ◽  
Blood Group Antigens ◽  
Group Status ◽  
Geodia Cydonium ◽  
Group A ◽  
Complex Carbohydrates ◽  
Group B ◽  
Inhibition Studies

We applied a peroxidase-antiperoxidase technique to study the distribution pattern and binding characteristics of the lectin from the marine sponge Geodia cydonium (Geodia cydonium agglutinin; GCA) in various human tissues. This lectin has been shown to possess a broad reactivity, but there was a distinct distribution of binding sites within the different organs. In the histochemical system GCA displayed no blood group specificity and labeled red blood cells, the vascular endothelium, and epithelial cells showing blood group antigen expression independent of the ABH blood group status. However, inhibition of GCA reactivity by simple sugars and complex carbohydrates demonstrated tissue-specific differences of lectin binding related to the ABH blood group status of the tissue and revealed information on the structural requirements of the histological lectin binding site. Tissues that totally lacked blood group antigens or that expressed only the H-antigen disclosed a GCA reactivity which was completely inhibited by lactose. In contrast, tissues that expressed blood group A- or blood group B-antigen exhibited a lactose-resistant lectin binding which was inhibited only by water-soluble blood group substance A from peptone A and by bovine glycophorin but not by other complex carbohydrates, including human glycophorin and human asialoglycophorin. Competitive inhibition studies in situ revealed that GCA binding was not inhibited by blood group type I/II carbohydrate sequence-specific lectins or by lectins with other sugar specificities. Inhibition by lactose of GCA binding to some histological sites indicates that the binding site consists of a beta-linked galactose-containing disaccharide. However, periodate oxidation of tissue sections had no effect on lectin binding, pointing to a subterminal location of the relevant sequence. The results obtained from inhibition studies with simple saccharides and complex carbohydrates in relation to the expression of ABH blood group antigens suggest a complex lectin combining site(s) in histological specimens. The lectin may possess either one binding site with a range of affinities for different carbohydrates (besides beta-linked disaccharides the GCA binding site accommodates to carbohydrate determinants carrying the blood group A or blood group B determinant), or may possess two different binding sites. Besides an acceptor site for beta-linked disaccharides, an additional binding site may exist accommodating to extended carbohydrate sequences related to A or B blood group structures. In conclusion, GCA represents a blood group-nonspecific lectin whose binding affinities are determined by the ABH blood group status of the tissue.

scholarly journals Molecular Detection of Rotavirus in Mollusks from the Oued El Maleh Estuary of Mohammedia, Morocco

2021 ◽  
Author(s):  
Abderrahim Hatib ◽  
Najwa Hassou ◽  
Abdelouahab Benani ◽  
Jamal Eddine Hafid ◽  
Moulay Mustapha Ennaji
Keyword(s):  
Real Time ◽  
Enteric Bacteria ◽  
Human Populations ◽  
Rt Pcr ◽  
Wet Season ◽  
Rotavirus A ◽  
Viral Loads ◽  
Wide Range ◽  
Group A Rotaviruses ◽  
Group A

Viral outbreaks can result from the consumption of contaminated bivalve mollusks. However, despite the regulation related to enteric bacteria in food products, the consumption of raw and undercooked mollusks remains linked to viral epidemics in human populations. Real-time RT-PCR is a highly sensitive approach for detecting and quantifying enteric viruses, and after eliminating enzymatic amplification inhibitors from samples of interest, sensitive and specific tests, like real-time RT-PCR, can facilitate the detection and quantification of a wide range of viruses that are concentrated in mollusk digestive tissues. The aim of the present study was to evaluate the prevalence of Group-A rotaviruses in mussel (Mytilus edulis Linnaeus, 1758) specimens (n=576) collected downstream of the Oued El Maleh Estuary, which is along the coast of Mohammedia City in Morocco, using real-time RT-PCR. Rotavirus A RNA was detected in 37.5% (n=18) of the 48 sample batches, and viral loads ranged from 0.42×101 to 1.8603×104 genomic copies per g digestive tissue. Most (72.22%) of the positive samples were collected during the wet season (September-April), and the probability of detecting rotaviruses was significantly greater during the wet season than during the dry season (P<0.001). Monitoring Rotavirus A and similar viruses in shellfish may help prevent viral contamination and preserve public health.

scholarly journals Blood group and Human Leucocyte Antigen sub-type as determinants to keloid formation and Recurrence in Keloid Patients; A prospective longitudinal cohort study

2021 ◽  
Author(s):  
Ferdinand Nangole ◽  
Kelsey Ouyang ◽  
George Agak ◽  
Julius Ogeng'o ◽  
Anzala Omu
Keyword(s):  
Blood Group ◽  
Genetic Factors ◽  
Control Group ◽  
Prospective Longitudinal Study ◽  
Female Ratio ◽  
Blood Group A ◽  
Significant Difference ◽  
Group A ◽  
Surgical Conditions ◽  
Prospective Longitudinal

Abstract The role of genetic factors in keloid is a firmed by the fact that keloids have been shown to occur among members of the same family.. We undertook this study to determine whether there is any association between patients’ bloodgroup and HLA sub-types to keloids and keloid recurrence. This was a prospective longitudinal study of patients with keloids and a control of patients managed for other surgical conditions with no keloids. Blood was taken from each patient and analysed for blood group and HLA sub-types using the sequence specific primer geno-typing. Data captured were summarized and analysed using students T-test to compare means. Probability values significance was at 0.05. A total of 90 patients with keloids and 59 in a control group were followed up in the study. The male to female ratio of the patients was 2:1. The most common blood group for both groups was blood group O at 51.3% and 49.2%, followed by blood group A and B respectively. Patients with keloids had a significantly higher positive alleles with DQA*01, DQB1*05, DQB1*06 and DRB1*15. There was an association between blood group A and DQB1*06 and recurrence. In conclusion, this study demonstrates that there is significant difference in HLA sub-types among patients who form keloids and the non-keloid forming patients among our study cohorts. Salient differences were also noted in patients with keloid recurrence based on their blood group, a pointer to the significance of genetic factors in keloid pathogenesis and severity.

scholarly journals Assessment of Correlations Between Neonatal Jaundice and Phototherapy With Childhood Diabetes Type 1

2020 ◽  
Author(s):  
Mehri Ayati ◽  
Amir Hossein Movahedian ◽  
Ziba Mosayebi
Keyword(s):  
Diabetes Mellitus ◽  
Type 1 Diabetes ◽  
Blood Group ◽  
Neonatal Jaundice ◽  
Control Group ◽  
Case Group ◽  
History Of ◽  
Group A ◽  
Childhood Type

Previous investigations have indicated an association between modulation of developing the immune system with increased risk of autoimmune diseases such as type 1 Diabetes Mellitus (T1DM). Objectives: In the present study, we aimed to evaluate correlations between the positive history of blood group incompatibility, neonatal jaundice, and phototherapy with childhood type 1 DM. A case-control retrospective study was carried out in an Iranian Hospital in 2015. One-hundred subjects aged 1-15 years with T1DM were included as the case group. One-hundred healthy children were also considered as the control group. A questionnaire composed of demographic-clinical data was completed for each subject. Correlations between childhood type 1diabetes and some clinical risk factors were determined. One hundred cases with type 1 diabetes and 100 healthy control children entered the study. A significant association between maternal gestational diabetes mellitus and childhood T1DM was observed (P=0.05, OR=3.789). The history of neonatal jaundice in the case group was significantly higher than in the control group (P=0.02, OR=4.667). ABO incompatibilities in the case group were associated with 19 neonates with blood group A and 2 neonates with blood group B (mothers' blood group; O) (P=0.005, OR=7.397). In the case group, 29 of 38 cases with a history of jaundice had received phototherapy while in the control group, 19 participants had undergone phototherapy (P=0.126, OR=1.707). Results have indicated that neonatal Jaundice and ABO incompatibility could increase the risk of childhood T1DM. Moreover, maternal GDM should be considered as an increased subsequent risk of childhood T1D.

scholarly journals Genetic Susceptibility to Human Norovirus Infection: An Update

Viruses ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 226 ◽  
Author(s):  
Johan Nordgren ◽  
Lennart Svensson
Keyword(s):  
Genetic Susceptibility ◽  
Blood Group ◽  
Phenotypic Diversity ◽  
In Vivo Studies ◽  
Human Populations ◽  
Blood Group Antigens ◽  
Human Norovirus ◽  
The Impact ◽  
High Infectivity

Noroviruses are the most common etiological agent of acute gastroenteritis worldwide. Despite their high infectivity, a subpopulation of individuals is resistant to infection and disease. This susceptibility is norovirus genotype-dependent and is largely mediated by the presence or absence of human histo-blood group antigens (HBGAs) on gut epithelial surfaces. The synthesis of these HBGAs is mediated by fucosyl- and glycosyltransferases under the genetic control of the FUT2 (secretor), FUT3 (Lewis) and ABO(H) genes. The so-called non-secretors, having an inactivated FUT2 enzyme, do not express blood group antigens and are resistant to several norovirus genotypes, including the predominant GII.4. Significant genotypic and phenotypic diversity of HBGA expression exists between different human populations. Here, we review previous in vivo studies on genetic susceptibility to norovirus infection. These are discussed in relation to population susceptibility, vaccines, norovirus epidemiology and the impact on public health.

scholarly journals Rotavirus symptomatic infection among unvaccinated and vaccinated children in Valencia, Spain

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Raúl Pérez-Ortín ◽  
Cristina Santiso-Bellón ◽  
Susana Vila-Vicent ◽  
Noelia Carmona-Vicente ◽  
Jesús Rodríguez-Díaz ◽  
...  
Keyword(s):  
Vaccine Coverage ◽  
National Health System ◽  
Epidemiological Data ◽  
Immunological Methods ◽  
Rotavirus Vaccine ◽  
Symptomatic Infection ◽  
Rotavirus Infection ◽  
Rotavirus Vaccination ◽  
Group A ◽  
Rotavirus Infections

Abstract Background Human group A rotavirus is the leading cause of severe acute gastroenteritis in young children worldwide. Immunization programs have reduced the disease burden in many countries. Vaccination coverage in the Autonomous Region of Valencia, Spain, is around 40%, as the rotavirus vaccine is not funded by the National Health System. Despite this low-medium vaccine coverage, rotavirus vaccination has substantially reduced hospitalizations due to rotavirus infection and hospital-related costs. However, there are very few studies evaluating symptomatic rotavirus infections not requiring hospitalization in vaccinated children. The objective of this study was to investigate symptomatic rotavirus infections among vaccinated children in the health area served by the Hospital Clínico Universitario of Valencia, Spain, from 2013 to 2015. Methods A total of 133 children younger than 5 years of age with rotavirus infection were studied. Demographic and epidemiological data were collected and informed consent from their caretakers obtained. Rotavirus infection was detected by immunological methods and G/P rotavirus genotypes were determined by RT-PCR, following standard procedures from the EuroRotaNet network. Results Forty infants (30.1%; 95% CI: 22.3–37.9) out of 133 were diagnosed with symptomatic rotavirus infection despite having been previously vaccinated, either with RotaTeq (85%) or with Rotarix (15%). Children fully vaccinated against rotavirus (24.8%), partially vaccinated (5.3%) and unvaccinated (69.9%) were found. The infecting genotypes showed high G-type diversity, although no significant differences were found between the G/P genotypes infecting vaccinated and unvaccinated children during the same time period. G9P[8], G12P[8] and G1P[8] were the most prevalent genotypes. Severity of gastroenteritis symptoms required 28 (66.6%) vaccinated and 67 (73.6%) unvaccinated children to be attended at the Emergency Room. Conclusion Rotavirus vaccine efficacy in reducing the incidence of severe rotavirus infection has been well documented, but symptomatic rotavirus infection can sometimes occur in vaccinees.

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