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https://www.readbyqxmd.com/read/28636595/nlrp9b-inflammasome-restricts-rotavirus-infection-in-intestinal-epithelial-cells
#1
Shu Zhu, Siyuan Ding, Penghua Wang, Zheng Wei, Wen Pan, Noah W Palm, Yi Yang, Hua Yu, Hua-Bing Li, Geng Wang, Xuqiu Lei, Marcel R de Zoete, Jun Zhao, Yunjiang Zheng, Haiwei Chen, Yujiao Zhao, Kellie A Jurado, Ningguo Feng, Liang Shan, Yuval Kluger, Jun Lu, Clara Abraham, Erol Fikrig, Harry B Greenberg, Richard A Flavell
Rotavirus, a leading cause of severe gastroenteritis and diarrhoea in young children, accounts for around 215,000 deaths annually worldwide. Rotavirus specifically infects the intestinal epithelial cells in the host small intestine and has evolved strategies to antagonize interferon and NF-κB signalling, raising the question as to whether other host factors participate in antiviral responses in intestinal mucosa. The mechanism by which enteric viruses are sensed and restricted in vivo, especially by NOD-like receptor (NLR) inflammasomes, is largely unknown...
June 21, 2017: Nature
https://www.readbyqxmd.com/read/28634691/modulation-of-rotavirus-severe-gastroenteritis-by-the-combination-of-probiotics-and-prebiotics
#2
REVIEW
Guadalupe Gonzalez-Ochoa, Lilian K Flores-Mendoza, Ramona Icedo-Garcia, Ricardo Gomez-Flores, Patricia Tamez-Guerra
Annual mortality rates due to infectious diarrhea are about 2.2 million; children are the most vulnerable age group to severe gastroenteritis, representing group A rotaviruses as the main cause of disease. One of the main factors of rotavirus pathogenesis is the NSP4 protein, which has been characterized as a viral toxin involved in triggering several cellular responses leading to diarrhea. Furthermore, the rotavirus protein NSP1 has been associated with interferon production inhibition by inducing the degradation of interferon regulatory factors IRF3, IRF5, and IRF7...
June 20, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28627832/molecular-epidemiological-traits-of-group-a-rotaviruses-in-japanese-children-during-transitional-period-of-rotavirus-vaccine-implementation-2011-2014
#3
Sayaka Takanashi, Aksara Thongprachum, Shoko Okitsu, Shuichi Nishimura, Masaaki Kobayashi, Hideaki Kikuta, Atsuko Yamamoto, Kumiko Sugita, Tsuneyoshi Baba, Satoshi Hayakawa, Masashi Mizuguchi, Hiroshi Ushijima
BACKGROUND: Group A rotavirus (RVA) vaccines have been introduced in Japan since 2011. To investigate the molecular epidemiological traits of RVA during the transitional period of rotavirus vaccine implementation in Japan, this study was undertaken by following up three-decade long surveillance conducted in the same regions. METHODS: RVA were screened and genotyped by RT-PCR from diarrheal samples collected from non-hospitalized patients in six localities (Hokkaido, Tokyo, Shizuoka, Osaka, Kyoto, and Saga) during 2011 - 2014...
May 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28627429/impact-of-rotavirus-vaccination-on-child-mortality-morbidity-and-rotavirus-related-hospitalizations-in-bolivia
#4
Lucia Inchauste, Maritza Patzi, Kjetil Halvorsen, Susana Solano, Raul Montesano, Volga Iñiguez
BACKGROUND: The public health impact of rotavirus vaccination in countries with high child mortality rates remains to be established. RV1 rotavirus vaccine was introduced in Bolivia in August 2008. We describe trends in deaths, hospitalizations and healthcare visits due to acute gastroenteritis (AGE) and in rotavirus-related hospitalizations, among children <5 years of age, during pre and post-vaccination periods. METHODS: Data was obtained from the National Health Information System to calculate vaccine coverage and AGE-related health indicators...
June 13, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28626585/first-detection-of-ds-1-like-g1p-8-human-rotavirus-strains-from-children-with-diarrhoea-in-the-philippines
#5
D Yamamoto, A Tandoc, E Mercado, F Quicho, S Lupisan, M Obata-Saito, M Okamoto, A Suzuki, R Tamaki, L Sombrero, R Olveda, H Oshitani
No abstract text is available yet for this article.
July 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28624334/seasonality-and-autoimmune-diseases-the-contribution-of-the-four-seasons-to-the-mosaic-of-autoimmunity
#6
REVIEW
Abdulla Watad, Shir Azrielant, Nicola Luigi Bragazzi, Kassem Sharif, Paula David, Itay Katz, Gali Aljadeff, Mariana Quaresma, Galya Tanay, Mohammad Adawi, Howard Amital, Yehuda Shoenfeld
Autoimmune diseases (ADs) are a heterogeneous groups of diseases that occur as a results of loss of tolerance to self antigens. While the etiopathogeneis remain obscure, different environmental factors were suggested to have a role in the development of autoimmunity, including infections, low vitamin D levels, UV radiation, and melatonin. Interestingly, such factors possess seasonal variation patterns that could influence disease development, severity and progression. Vitamin D levels which reach a nadir during late winter and early spring is correlated with increased disease activity, clinical severity as well as relapse rates in several disease entities including multiple sclerosis (MS), non-cutaneous flares of systemic lupus erythematosus (SLE), psoriasis, and rheumatoid arthritis (RA)...
June 14, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28623456/pertussis-and-rotavirus-vaccines-controversies-and-solutions
#7
REVIEW
Nabaneeta Dash, Sanjay Verma
Pertussis and rotavirus vaccines have been the subject of several controversies over the years. In this paper the authors discuss facts and myths behind these controversies and also suggest solutions to overcome some limitations of these vaccines. The whole-cell pertussis vaccine (wPV) came into disrepute due to the associated adverse reactions, resulting in its replacement by acellular pertussis vaccine (aPV) in industrialized nations in 1990s. Although wPV is known to have more side effects; but they are usually minor...
June 16, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28623028/impact-and-cost-effectiveness-of-rotavirus-vaccination-in-bangladesh
#8
Clint Pecenka, Umesh Parashar, Jacqueline E Tate, Jahangir A M Khan, Devin Groman, Stephen Chacko, Md Shamsuzzaman, Andrew Clark, Deborah Atherly
INTRODUCTION: Diarrheal disease is a leading cause of child mortality globally, and rotavirus is responsible for more than a third of those deaths. Despite substantial decreases, the number of rotavirus deaths in children under five was 215,000 per year in 2013. Of these deaths, approximately 41% occurred in Asia and 3% of those in Bangladesh. While Bangladesh has yet to introduce rotavirus vaccination, the country applied for Gavi support and plans to introduce it in 2018. This analysis evaluates the impact and cost-effectiveness of rotavirus vaccination in Bangladesh and provides estimates of the costs of the vaccination program to help inform decision-makers and international partners...
June 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28622358/rotavirus-replication-is-correlated-with-s-g2-interphase-arrest-of-the-host-cell-cycle
#9
Selene Glück, Antonino Buttafuoco, Anita F Meier, Francesca Arnoldi, Bernd Vogt, Elisabeth M Schraner, Mathias Ackermann, Catherine Eichwald
In infected cells rotavirus (RV) replicates in viroplasms, cytosolic structures that require a stabilized microtubule (MT) network for their assembly, maintenance of the structure and perinuclear localization. Therefore, we hypothesized that RV could interfere with the MT-breakdown that takes place in mitosis during cell division. Using synchronized RV-permissive cells, we show that RV infection arrests the cell cycle in S/G2 phase, thus favoring replication by improving viroplasms formation, viral protein translation, and viral assembly...
2017: PloS One
https://www.readbyqxmd.com/read/28620404/oral-administration-of-a-seed-based-bivalent-rotavirus-vaccine-containing-vp6-and-nsp4-induces-specific-immune-responses-in-mice
#10
Hao Feng, Xin Li, Weibin Song, Mei Duan, Hong Chen, Tao Wang, Jiangli Dong
Rotavirus is the leading cause of severe diarrheal disease among newborns. Plant-based rotavirus vaccines have been developed in recent years and have been proven to be effective in animal models. In the present study, we report a bivalent vaccine candidate expressing rotavirus subunits VP6 and NSP4 fused with the adjuvant subunit B of E. coli heat-labile enterotoxin (LTB) in maize seeds. The RT-PCR and Western blot results showed that VP6 and LTB-NSP4 antigens were expressed and accumulated in maize seeds...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28613141/completely-genomic-and-evolutionary-characteristics-of-human-dominant-g9p-8-group-a-rotavirus-strains-in-yunnan-china
#11
Ziqin Dian, Binghui Wang, Mao Fan, Shuwei Dong, Yue Feng, A-Mei Zhang, Li Liu, Hua Niu, Yuanyue Li, Xueshan Xia
G9P[8] rotavirus A (RVA) has been identified as the predominant genotype circulating in Yunnan, China. To elucidate the molecular characteristics of its genetic composition at the whole-genome level, the genomes of 12 strains isolated from paediatric patients with diarrhoea were fully sequenced and characterized. Eleven of the 12 strains were genotyped as G9-P[8]-I1-R1-C1-M1-A1-N1-T1-E1-H1, which is closely related to the Wa-like genotype 1 constellation. In contrast, one strain was genotyped as G9-P[8]-I1-R1-C1-M1-A1-N2-T1-E1-H1, with the NSP2 gene characterized as a DS-1 like genotype...
June 14, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28609219/parents-insights-after-pediatric-hospitalization-due-to-rotavirus-gastroenteritis-in-italy
#12
Federico Marchetti, Volker Vetter, Giorgio Conforti, Susanna Esposito, Paolo Bonanni
Most of the severe cases of acute gastroenteritis in infants and children under five globally are caused by rotavirus infection. There are nearly 15,000 rotavirus gastroenteritis (RVGE) hospitalizations in Italy each year, which could be reduced by available rotavirus vaccines. In addition to the economic and societal burden, RVGE hospitalization could impact families negatively. The aim of this survey was to obtain parents' insights after hospitalization of their child for RVGE. Parents, of 500 children aged 0-5 years, were interviewed about their experience of RVGE hospitalization and asked to rate their stress on different items and overall...
June 13, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28606817/phylogenetic-analysis-of-g1p-8-and-g12p-8-rotavirus-a-samples-obtained-in-the-pre-and-post-vaccine-periods-and-molecular-modeling-of-vp4-and-vp7-proteins
#13
Tâmera Nunes Vieira Almeida, Teresinha Teixeira de Sousa, Roosevelt Alves da Silva, Fabíola Souza Fiaccadori, Menira Souza, Kareem Rady Badr, Divina das Dôres de Paula Cardoso
Reduction in morbimortality rates for acute gastroenteritis (AGE) by Rotavirus A (RVA) has been observed after the introduction of vaccines, however the agent continues to circulate. The present study described the genomic characterization of the 11 dsRNA segments of two RVA samples G1P[8] obtained in the pre- and post-vaccination periods and one of G12P[8] sample (post-vaccine), compared to Rotarix™ vaccine. Analysis by molecular sequencing of the samples showed that the three samples belonged to genogroup I...
June 9, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28606119/molecular-epidemiology-of-avian-rotaviruses-group-a-and-d-shed-by-different-bird-species-in-nigeria
#14
Maude Pauly, Oluwole O Oni, Aurélie Sausy, Ademola A Owoade, Christopher A O Adeyefa, Claude P Muller, Judith M Hübschen, Chantal J Snoeck
BACKGROUND: Avian rotaviruses (RVs) cause gastrointestinal diseases of birds worldwide. However, prevalence, diversity, epidemiology and phylogeny of RVs remain largely under-investigated in Africa. METHODS: Fecal samples from 349 birds (158 symptomatic, 107 asymptomatic and 84 birds without recorded health status) were screened by reverse transcription PCR to detect RV groups A and D (RVA and RVD). Partial gene sequences of VP4, VP6, VP7 and NSP4 for RVA, and of VP6 and VP7 for RVD were obtained and analyzed to infer phylogenetic relationship...
June 12, 2017: Virology Journal
https://www.readbyqxmd.com/read/28604328/the-status-of-vaccine-availability-and-associated-factors-in-tshwane-government-clinics
#15
Ntombenhle Judith Ngcobo, Mercy G Kamupira
BACKGROUND: Vaccines have greatly contributed to the control of vaccine-preventable diseases and to human development. Efforts by many countries to introduce new vaccines are a significant move towards achieving the sustainable development goal for health. However, effective vaccine supply chains that ensure an uninterrupted supply of vaccines are pivotal to attaining universal access to life-saving vaccines and sustainable development. The introduction of new vaccines puts a strain on supply chains; South Africa (SA) is no exception, as there are indications of vaccine stock-outs in clinics...
May 24, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28603021/detection-of-uncommon-g3p-3-rotavirus-a-rva-strain-in-rat-possessing-a-human-rva-like-vp6-and-a-novel-nsp2-genotype
#16
Giovanni Ianiro, Ilaria Di Bartolo, Luca De Sabato, Guglielmo Pampiglione, Franco M Ruggeri, Fabio Ostanello
Rotavirus is one of the leading causes of acute gastroenteritis in infants and young children. RVAs infect not only humans but also a wide range of mammals including rats, which represent a reservoir of several other zoonotic pathogens. Due to the segmented nature of the RVA genome, animal RVA strains can easily adapt to the human host by reassortment with co-infecting human viruses. This study aims to detect and characterize RVA in the intestinal content of Italian sinantropic rats (Rattus rattus). Out of 40 samples examined following molecular approach, one resulted positive for RVA...
June 8, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28592985/child-feeding-practices-and-diarrheal-disease-among-children-less-than-two-years-of-age-of-the-nomadic-people-in-hadaleala-district-afar-region-northeast-ethiopia
#17
Zemichael Gizaw, Wondwoson Woldu, Bikes Destaw Bitew
BACKGROUND: Diarrhea is a serious public health problem in Ethiopia. It is responsible for 24-30% of all infant deaths and there is a lack of evidence on the health burdens among the nomadic people. This study was therefore designed to assess the prevalence of diarrhea among children less thanvtwo year's of age and its association with feeding practices among the nomadic people in Hadaleala district, northeast Ethiopia. METHODS: A cross-sectional study was conducted in Hadaleala district...
2017: International Breastfeeding Journal
https://www.readbyqxmd.com/read/28591681/structural-features-of-glycan-recognition-among-viral-pathogens
#18
REVIEW
Sreejesh Shanker, Liya Hu, Sasirekha Ramani, Robert L Atmar, Mary K Estes, B V Venkataram Prasad
Recognition and binding to host glycans present on cellular surfaces is an initial and critical step in viral entry. Diverse families of host glycans such as histo-blood group antigens, sialoglycans and glycosaminoglycans are recognized by viruses. Glycan binding determines virus-host specificity, tissue tropism, pathogenesis and potential for interspecies transmission. Viruses including noroviruses, rotaviruses, enteroviruses, influenza, and papillomaviruses have evolved novel strategies to bind specific glycans often in a strain-specific manner...
June 4, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/28591260/presence-of-rotavirus-and-free-living-amoebae-in-the-water-supplies-of-karachi-pakistan
#19
Farzana Abubakar Yousuf, Ruqaiyyah Siddiqui, Naveed Ahmed Khan
Rotavirus and pathogenic free-living amoebae are causative agents of important health problems, especially for developing countries like Pakistan where the population has limited access to clean water supplies. Here, we evaluated the prevalence of rotavirus and free-living amoebae (Acanthamoeba spp., Balamuthia mandrillaris, Naegleria fowleri) in drinking water supplies of Karachi, Pakistan. Six water filtration plants that supply drinking water to the population of Karachi were investigated. Additionally, drinking water samples from households were analyzed for the presence of rotavirus and free-living amoebae...
June 1, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28584458/epidemiology-of-rotavirus-in-the-iranian-children-a-systematic-review-and-meta-analysis
#20
REVIEW
Seyed Hamid Reza Monavari, Shima Hadifar, Shayan Mostafaei, Ali Miri, Mohsen Keshavarz, Farhad Babaei, Mohsen Moghoofei
Rotavirus is associated with increased risk for severe diarrhea in infants and young children worldwide. This systematic review and meta-analysis was performed to determine the prevalence rate of rotavirus from different parts of Iran and provide an overall relative frequency (RF) for Iran. We performed a systematic literature review from several databases including PubMed, ISI Web of Science, Scopus, OVID, MAG IRAN, IranMedex, and Iranian Scientific Information Database. We searched the following keywords: "rotavirus," "rotavirus infection," "acute gastroenteritis," "diarrhea," "children," "infant," and "Iran...
April 2017: Journal of Global Infectious Diseases
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