cord-000082-jy7j8sh0 2009 cord-000374-gt2pwc9b 2011 With these considerations in mind, in the present study, we introduce a bottom-up genotype-phenotype analysis to investigate the association between genetic polymorphisms and autonomic control of heart rate dynamics, using three common polymorphisms in genes encoding b-adrenergic receptor (b-AR) as an example. The analyses of the present study were two-fold: 1) a nonrandomness index [17] derived from the IBS method was applied to quantify the nonlinear aspect of HRV according to b-AR genotype and to test the correlation of this index with standard HRV indices; and 2) using agglomerative hierarchical cluster analysis, we unsupervisedly categorized these subjects into clusters based on pairwise dissimilarity among heart rate dynamics, and then we investigated the association of these clustering patterns with b-AR gene polymorphisms. The data presented in this study demonstrate a significant association of a common b 2 -AR polymorphism, Arg16Gly, with the non-randomness index, a nonlinear HRV measure derived from the IBS method. cord-000483-zgapjjjw 2011 cord-001601-tsuz3j40 2015 An assessment was made of the antiviral activities and mechanisms of action of paeonol (PA) and 1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose (PGG) from Paeonia lactiflora root toward HRV-2 and HRV-4 in MRC5 cells using a tetrazolium method and real-time quantitative reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay. These findings suggest that PGG and PA may block or reduce the entry of the viruses into the cells to protect the cells from the virus destruction and abate virus replication, which may play an important role in interfering with expressions of rhinovirus receptors (intercellular adhesion molecule-1 and low-density lipoprotein receptor), inflammatory cytokines (interleukin (IL)-6, IL-8, tumor necrosis factor, interferon beta, and IL-1β), and Toll-like receptor, which resulted in diminishing symptoms induced by HRV. In the presence of 100 μg/mL PA or 20 μg/mL PGG in MRC5 cell cultures infected with HRV-2, the RNA replication levels were reduced by 30.1 and 14.3 fold, respectively, compared to the levels in the cell cultures without the compounds (Fig 4A) . cord-002257-30s14h9j 2016 cord-004694-43yvs52a 2009 cord-004749-wyzb8v4a 1989 cord-005392-0pgcfk6b 2011 title: Development of a Quantitative Real-Time Nucleic Acid Sequence-Based Amplification Assay with an Internal Control Using Molecular Beacon Probes for Selective and Sensitive Detection of Human Rhinovirus Serotypes In this study, we developed the first quantitative real-time nucleic acid sequence-based amplification assay with an internal control using molecular beacon probes for selective and sensitive detection of human rhinovirus serotypes. Aim of this study was to develop the first quantitative real-time nucleic acid sequence-based amplification assay internally controlled using molecular beacon for selective and sensitive detection of HRV serotypes. To estimate the dynamic range of the real-time NASBA assay (range of concentrations over which the method performs in a linear manner with an acceptable level of trueness and precision), we used HRV standard dilutions from 10 8 copies/ll to 1 copy/ll. Evaluation of a real-time nucleic acid sequence-based amplification assay using molecular beacons for detection of human immunodeficiency virus type 1 cord-007234-hcpa8ej5 2007 cord-009773-pbm2vs5h 2006 cord-009877-3cyz6o9c 2005 cord-009922-t1hoox6e 2005 This paper describes the first enzyme‐linked immunosorbent assay for the detection of rhinovirus antigens in clinical specimens (nasal washings), either directly or following overnight cell culture amplification. Secondly, a direct ELISA system was developed in which the nasal washings or control antigen (uninfected tissue culture fluid) were added directly to each of a set of duplicate ELISA plate wells coated with either pre-or postchallenge rabbit anti HRV-EL hyperimmune serum. Figure 2 shows the results obtained with nasal washings, collected from three volunteers on consecutive days following HKV-EL or saline challenge, tested in both the cell-culture-amplified (CCA)-ELISA and direct ELISA systems. Although we would like to emphasise that our data are preliminary, both the direct and CCA-ELISAs gave a good correlation with virus isolation when used to detect rhinovirus antigens in nasal washings (obtained from 18 volunteers challenged with either HRV-EL or saline). cord-010075-72jodunj 2011 Expression of MR, CD91 and CD31 were decreased in patients with NEA or COPD, but not signifi cantly changed in EA Conclusion Impaired sputum-macrophage phagocytosis of apoptotic cells in NEA is associated with reduced expression of key macrophage recognition molecules. Conclusions Subjects with severe persistent asthma have an eating pattern of lower diet quality with higher intakes of fat and lower intakes of fi bre than healthy controls, which is related to lower lung function and increased airway infl ammation. Support and Confl ict of Interest Nil. Methods We performed a retrospective chart review of all adult patients who had an ICC over a 24-month period within a tertiary hospital respiratory service. The objectives of our study were to (1) determine the point prevalence and identify viruses associated with exacerbations and (2) evaluate clinical and investigational differences between viral infection positive and negative exacerbations in children with non-CF bronchiectasis. cord-010160-wk8k2igu 2012 cord-015893-e0fofgxq 2011 cord-016499-5iqpl23p 2014 A convenience population of 15 healthy children (1-9 years old) without asthma were followed during at least three seasons, and picornaviruses were detected in 5 % of 740 specimens (21 % of infections) not associated with symptoms, The impact of HRV typing and of sampling based only on symptoms. Clinical features and complete genome characterization of a distinct human rhinovirus genetic cluster, probably representing a previously undetected HRV species, HRV-C, associated with acute respiratory illness in children Comparison of results of detection of rhinovirus by PCR and viral culture in human nasal wash specimens from subjects with and without clinical symptoms of respiratory illness Detection of human rhinovirus C viral genome in blood among children with severe respiratory infections in the Philippines cord-016783-8x05oh5q 2010 cord-018421-wy3mtafh 2016 cord-022084-hap7flng 2009 The Centers for Disease Control and Prevention (CDC) recommends the immunization of persons aged 50 years and older; residents of nursing homes; children and adults with chronic cardiovascular or pulmonary disease, including asthma; persons chronically ill with diabetes mellitus, renal dysfunction, or hemoglobinopathies; immunosuppressed patients including those with HIV infection; children and adolescents on chronic aspirin therapy who may develop postinfluenza Reye'' s syndrome; women who will be pregnant during the influenza season; children aged 6 to 23 months; those who can transmit influenza to persons at high risk, such as health-care workers and household contacts of those at high risk including children 0 to 23 months of age; crew members of cruise ships; providers of essential services; and unimmunized travelers to areas where influenza may be circulating, including the tropics, the southern hemisphere between April and September, and those traveling in large organized tourist groups. cord-023298-ysur3sjq 2011 Expression of MR, CD91 and CD31 were decreased in patients with NEA or COPD, but not signifi cantly changed in EA Conclusion Impaired sputum-macrophage phagocytosis of apoptotic cells in NEA is associated with reduced expression of key macrophage recognition molecules. Conclusions Subjects with severe persistent asthma have an eating pattern of lower diet quality with higher intakes of fat and lower intakes of fi bre than healthy controls, which is related to lower lung function and increased airway infl ammation. Support and Confl ict of Interest Nil. Methods We performed a retrospective chart review of all adult patients who had an ICC over a 24-month period within a tertiary hospital respiratory service. The objectives of our study were to (1) determine the point prevalence and identify viruses associated with exacerbations and (2) evaluate clinical and investigational differences between viral infection positive and negative exacerbations in children with non-CF bronchiectasis. cord-023302-p9pxz44a 2011 Expression of MR, CD91 and CD31 were decreased in patients with NEA or COPD, but not signifi cantly changed in EA Conclusion Impaired sputum-macrophage phagocytosis of apoptotic cells in NEA is associated with reduced expression of key macrophage recognition molecules. Conclusions Subjects with severe persistent asthma have an eating pattern of lower diet quality with higher intakes of fat and lower intakes of fi bre than healthy controls, which is related to lower lung function and increased airway infl ammation. Support and Confl ict of Interest Nil. Methods We performed a retrospective chart review of all adult patients who had an ICC over a 24-month period within a tertiary hospital respiratory service. The objectives of our study were to (1) determine the point prevalence and identify viruses associated with exacerbations and (2) evaluate clinical and investigational differences between viral infection positive and negative exacerbations in children with non-CF bronchiectasis. cord-023305-5lb9kho6 2011 Expression of MR, CD91 and CD31 were decreased in patients with NEA or COPD, but not signifi cantly changed in EA Conclusion Impaired sputum-macrophage phagocytosis of apoptotic cells in NEA is associated with reduced expression of key macrophage recognition molecules. Conclusions Subjects with severe persistent asthma have an eating pattern of lower diet quality with higher intakes of fat and lower intakes of fi bre than healthy controls, which is related to lower lung function and increased airway infl ammation. Support and Confl ict of Interest Nil. Methods We performed a retrospective chart review of all adult patients who had an ICC over a 24-month period within a tertiary hospital respiratory service. The objectives of our study were to (1) determine the point prevalence and identify viruses associated with exacerbations and (2) evaluate clinical and investigational differences between viral infection positive and negative exacerbations in children with non-CF bronchiectasis. cord-023314-rwjxk8v4 2011 Expression of MR, CD91 and CD31 were decreased in patients with NEA or COPD, but not signifi cantly changed in EA Conclusion Impaired sputum-macrophage phagocytosis of apoptotic cells in NEA is associated with reduced expression of key macrophage recognition molecules. Conclusions Subjects with severe persistent asthma have an eating pattern of lower diet quality with higher intakes of fat and lower intakes of fi bre than healthy controls, which is related to lower lung function and increased airway infl ammation. Support and Confl ict of Interest Nil. Methods We performed a retrospective chart review of all adult patients who had an ICC over a 24-month period within a tertiary hospital respiratory service. The objectives of our study were to (1) determine the point prevalence and identify viruses associated with exacerbations and (2) evaluate clinical and investigational differences between viral infection positive and negative exacerbations in children with non-CF bronchiectasis. cord-023333-b7w9zrl6 2011 Expression of MR, CD91 and CD31 were decreased in patients with NEA or COPD, but not signifi cantly changed in EA Conclusion Impaired sputum-macrophage phagocytosis of apoptotic cells in NEA is associated with reduced expression of key macrophage recognition molecules. Conclusions Subjects with severe persistent asthma have an eating pattern of lower diet quality with higher intakes of fat and lower intakes of fi bre than healthy controls, which is related to lower lung function and increased airway infl ammation. Support and Confl ict of Interest Nil. Methods We performed a retrospective chart review of all adult patients who had an ICC over a 24-month period within a tertiary hospital respiratory service. The objectives of our study were to (1) determine the point prevalence and identify viruses associated with exacerbations and (2) evaluate clinical and investigational differences between viral infection positive and negative exacerbations in children with non-CF bronchiectasis. cord-023343-y17z9w2x 2011 Expression of MR, CD91 and CD31 were decreased in patients with NEA or COPD, but not signifi cantly changed in EA Conclusion Impaired sputum-macrophage phagocytosis of apoptotic cells in NEA is associated with reduced expression of key macrophage recognition molecules. Conclusions Subjects with severe persistent asthma have an eating pattern of lower diet quality with higher intakes of fat and lower intakes of fi bre than healthy controls, which is related to lower lung function and increased airway infl ammation. Support and Confl ict of Interest Nil. Methods We performed a retrospective chart review of all adult patients who had an ICC over a 24-month period within a tertiary hospital respiratory service. The objectives of our study were to (1) determine the point prevalence and identify viruses associated with exacerbations and (2) evaluate clinical and investigational differences between viral infection positive and negative exacerbations in children with non-CF bronchiectasis. cord-023713-daz2vokz 2013 A systematic review and metaanalysis of the longitudinal studies relating maternal vitamin D status during pregnancy to childhood outcomes concluded that high maternal dietary vitamin D intake is associated with a reduced risk of children wheezing up to the age of 5 years (OR = 0.56; 95% CI, 0.42 to 0.73). The Dutch Prevention and Incidence of Asthma and Mite allergy (PIAMA) birth cohort study related symptom data prospectively collected annually from 3863 children up to the age of 8 years to land-use regression estimates of individual NO 2 , PM 2.5 , and soot exposures at their birth addresses. 327 A systematic review and meta-analysis of prospective birth cohort studies evaluating the effects of allergen (i.e., HDM or dietary) avoidance during pregnancy concluded that early-life allergen avoidance in isolation does not reduce the likelihood of asthma in children at age 5 years (OR = 1.22; 95% CI, 0.83 to 1.78). cord-023766-qx0qdjmt 2018 cord-103367-fxvvndic 2020 cord-225218-x32a4sp3 2020 cord-252347-vnn4135b 2007 cord-253564-3y1wdepc 2007 cord-258336-zs04l3s0 2017 cord-259997-8f8di4eu 2018 cord-268093-ta6k0uyz 2013 The presence of the new HRV-C strain in severe respiratory disease has further instilled research interest in the clinical impact, molecular biology and epidemiology of HRVs. As research of HRV is limited [8] , especially in Asian developing countries, this study aims to examine the molecular epidemiology, the demographic characteristics and clinical features including the newly discovered HRV-C species, among hospitalized children less than 5 years of age with ALRTI in Malaysia. HRV infected patients were admitted earlier compared to RSV and influenza; children with HRV presented to the hospital after a mean duration of 1.9 days (ranged 1-9 days) as compared with HRV (4.0 days, p = <0.001) and IFV-A (4.8 days, p = 0.002). Our study revealed that HRV infected children were hospitalized earlier in the course of their disease and were less febrile on presentation as compared to RSV and IFV-A infections. cord-269922-ddpud48b 2018 cord-270892-ycc3csyh 2010 [79] [80] [81] [82] Taken together, the results of natural cold studies as well as of experimental infection in human volunteers clearly demonstrate that HRV are able to replicate in the upper as well as in the lower airways. Such an anti-HRV drug would have to be (i) with broad spectrum activity because of the high number of HRV serotypes, (ii) administered very early in infection to demonstrate a good antiviral effect because of the fast infection kinetics, (iii) very safe because of the broad application by millions of people, and (iv) directed against a highly conserved target with low risk of resistance development. The HRV-induced CPE, infectious virus titers, viral protein expression, and RNA synthesis can be chosen as parameters to evaluate the anti-HRV activity of compounds in cell-culture based assays. Due to the lack of a small-animal model for HRV infection until 2008, the experimental human challenge model has to be used to approve effects of potential antiviral drugs under controlled conditions in preclinical studies. cord-272125-dez1nzg4 2010 A specific immunoglobulin E (IgE) sensitization for common food and aeroallergens and other atopy‐related variables including total IgE, blood and nasal eosinophils, exhaled nitric oxide, eczema and atopic eczema, parental allergy and asthma, number of wheezing episodes, positive asthma predictive index or asthma and use of inhaled corticosteroid were correlated with specific viral etiology. The number of sensitizations was particularly associated with sole rhinovirus etiology (odds ratio 4.59; 95% confidence interval 1.78, 11.8; adjusted to age and sex), followed by aeroallergen sensitization (respectively; 4.18; 2.00, 8.72), total IgE level (2.06; 1.32, 3.21), food allergen sensitization (2.02; 1.08, 3.78), and nasal eosinophil count (1.52; 1.08, 2.13). Log 10 Number of sensitizations were particularly associated with sole HRV etiology (odds ratio 4.59; adjusted to age and sex), followed by aeroallergen sensitization (respectively, 4.18), total IgE level (2.06), food allergen sensitization (2.02), and nasal eosinophil count (1.52) (p < 0.05 for all, Fig. 1b , Table S2 ). cord-274943-fn3m14cn 2017 cord-275275-wy8d6cw3 2013 cord-278438-bnjkmegh 2002 cord-280391-5kiu2pb6 2011 cord-281158-vjh9z7l4 2018 cord-281162-2pu7x5rj 2019 cord-284875-hsa2r7ns 2020 cord-284889-hth8nf5b 2013 cord-287063-kheek4lx 2012 cord-289358-4abypk6o 2014 cord-290773-kgb8r561 2018 cord-291238-myjyw8ei 2010 Although the most commonly identifi ed viruses have been infl uenza virus and respiratory syncytial virus (RSV) (1), human rhinovirus (HRV) is being increasingly associated with severe respiratory disease and outbreaks in these facilities (2) (3) (4) (5) (6) . As a result, the number of outbreaks caused by HRV in long-term care facilities, and the associated illness and death, may be substantially underestimated. During the surveillance period, 297 respiratory disease outbreaks in long-term care facilities were reported to the Ontario Public Health Laboratory; we received samples from 269 facilities (Table 1) . We cautiously assume that HRV was the causative organism for 174 (59%) of the 297 respiratory outbreaks in long-term care facilities in Ontario during the surveillance period. Neighbor-joining phylogenetic tree of human rhinoviruses (HRV) isolated from 4 respiratory disease outbreaks with associated deaths in long-term care facilities, Ontario, Canada. cord-291486-5h96msv1 2007 cord-299537-lbx1plqx 2010 cord-299672-dq1y1gkc 2010 cord-307333-n6jc0jy3 2014 cord-307602-2cmgu7rf 2007 cord-307990-skrye40w 2012 cord-309497-3v0asfa7 2012 cord-310171-1fmsxx2s 2014 cord-314841-b5l6epy3 2019 cord-316245-n6tmn4ph 2015 cord-316319-m6uha1qn 2013 cord-316932-fia1w9jt 2005 cord-317198-mean7sj9 2016 cord-317499-mxt7stat 2014 cord-317548-ft7lkpzq 2007 cord-318016-987w5i6t 2010 To investigate a possible role for human rhinovirus C in respiratory exacerbations of children with cystic fibrosis, we conducted microbiologic testing on respiratory specimens from 103 such patients in São Paulo, Brazil, during 2006–2007. To investigate a possible role for human rhinovirus C in respiratory exacerbations of children with cystic fi brosis, we conducted microbiologic testing on respiratory specimens from 103 such patients in São Paulo, Brazil, during 2006-2007. In the study reported here, we obtained samples from patients during routine visits and exacerbations, which enabled us to identify a distinct role of different HRV subtypes. (3) , in which they used real-time nucleic acid sequence-based amplifi cation in conjunction with molecular markers to investigate the presence of 9 respiratory viruses in children with CF, described an association of viral infections with respiratory exacerbations, particularly those caused by infl uenza A, infl uenza B, and rhinovirus (3). cord-319942-ava86u8y 2018 cord-321989-1enjopig 2017 cord-324216-ce3wa889 2008 cord-325137-6c6er06a 2016 cord-327344-8gi1wb76 2009 This article describes the development and optimization of a reverse transcription (RT) real-time PCR assay for quantification of HRV RNA in clinical samples. Clinical specimens originated from the Virology Unit of the Fig. 1 Standard curve (from 10 2 to 10 5 copies/reaction) and dynamic range (from 10 7 to 10 1 copies/reaction) of the real-time RT-PCR developed in this study Azienda Ospedaliero-Universitaria San Giovanni Battista, Turin, and included 110 bronchoalveolar lavages (BAL) obtained from 84 patients (M/F, 57/27; mean age, 57.8 years; range, . The performance of the RT real-time PCR developed in this study was examined over different concentrations of HRV RNA and it was found to be very sensitive with a minimum cut-off for detection of 10 0 copy/reaction and was linear up to 10 1 copies. In conclusion, the RT real-time PCR assay developed in this study could represent a useful tool for diagnosing HRV infections, quantifying the viral load and could be applicable for routine diagnostic workup of upper as well as lower respiratory tract diseases. cord-327610-cm3vkpcn 2020 cord-327701-1qgaxcqq 2019 In a prospective longitudinal study utilizing intensive weekly home-based active surveillance to evaluate the household transmission of nine respiratory viruses in rural South Asia, initial infection in young children was associated with the greatest risk of symptomatic respiratory virus household transmission with spread to infants occurring in 45% of transmission events. A higher proportion of initial infection among this group resulted in secondary cases compared to other age groups, including school-age children and mothers, a finding confirmed in our multivariable model of transmission incidence. While a model of Kenya transmission data supports immunizing school-age children to diminish transmission of the virus to infants, our study suggests that in rural South Asia, preschool-age children are more likely to transmit respiratory viruses to other household members [38] . Our study of non-influenza respiratory virus transmission within households in rural Nepal highlights the importance of targeting preschool-age children to prevent the spread of respiratory viral illness. cord-328795-rs1sd42z 2016 cord-333261-knj2rrut 2011 cord-336713-if6f58ii 2001 To investigate the development and sites of residence of intestinal memory B cells, and their role in protective immunity to reinfection with an enteric virus, we assessed the association between memory B cell and antibody-secreting cell (ASC) responses and protection using a gnotobiotic pig model for human rotavirus (HRV) infection and diarrhoea. The isotypes, quantities and tissue distribution of rotavirus-specific memory B cells and ASC were evaluated prechallenge (28 and 83 postinoculation days [PID]) and postchallenge (7 postchallenge days [PCD]), using enzyme-linked immunospot (ELISPOT) assay, in gnotobiotic pigs inoculated once with virulent or three times with attenuated HRV and challenged at PID 28 with the corresponding virulent HRV. In previous studies, 3, 4 we reported that the number of rotavirus-speci®c immunoglobulin A (IgA) antibody-secreting cells (ASC) present in the intestinal lamina propria of gnotobiotic pigs at the time of challenge (primary ASC) correlates with protection against infection and diarrhoea when challenged with human rotavirus (HRV). cord-342993-deuytbml 2010 cord-345817-rrf3dbnb 2011 cord-346253-0mnsm6s4 2012 HRV are the most common viral agents [33] ; Other respiratory tract viruses detected in children with an asthma exacerbation include RSV, influenza, coronavirus, hMPV, parainfluenza virus, adenovirus, and bocavirus [34] [35] [36] . Beside importance for bone health, vitamin D plays an important role in adequate function of both the innate and adaptive immune systems including development of dendritic cells and regulatory T lymphocytes [151, 152] production of antimicrobial proteins by airway epithelium [153] , modifying the effect of intestinal flora on inflammatory disorders [107] , and modulation of the inflammatory response to viral infections [154] . In a recent study of 48 children from five to 18 years of age, with newly diagnosed asthma, vitamin D supplementation during the northern hemisphere winter months (September to July) prevented declining serum concentrations of 25(OH) D and reduced the risk of asthma exacerbation triggered by acute respiratory tract infections [161] . cord-351571-gwtkrt5u 2013 cord-352273-sras8r5z 2017 cord-354011-v9t2b2ca 2013 cord-356027-ckdx56j1 2016