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Nokso-Koivisto J, Ehrlich GD, Enoksson F, Komatsu K, Mason K, Melhus Å, Patel JA, Vijayasekaran S, Ryan A. Otitis media: Interactions between host and environment, immune and inflammatory responses. Int J Pediatr Otorhinolaryngol 2024; 176:111798. [PMID: 38041988 DOI: 10.1016/j.ijporl.2023.111798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/12/2023] [Accepted: 11/19/2023] [Indexed: 12/04/2023]
Abstract
OBJECTIVE To review and highlight progress in otitis media (OM) research in the areas of immunology, inflammation, environmental influences and host-pathogen responses from 2019 to 2023. Opportunities for innovative future research were also identified. DATA SOURCES PubMed database of the National Library of Medicine. REVIEW METHODS Key topics were assigned to each panel member for detailed review. Search of the literature was from June 2019 until February 2023. Draft reviews were collated, circulated, and discussed among panel members at the 22nd International Symposium on Recent Advances in Otitis Media in June 2023. The final manuscript was prepared and approved by all the panel members. CONCLUSIONS Important advances were identified in: environmental influences that enhance OM susceptibility; polymicrobial middle ear (ME) infections; the role of adaptive immunity defects in otitis-proneness; additional genes linked to OM; leukocyte contributions to OM pathogenesis and recovery; and novel interventions in OM based on host responses to infection. Innovative areas of research included: identification of novel bacterial genes and pathways important for OM persistence, bacterial adaptations and evolution that enhance chronicity; animal and human ME gene expression, including at the single-cell level; and Sars-CoV-2 infection of the ME and Eustachian tube.
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Affiliation(s)
- Johanna Nokso-Koivisto
- Department of Otorhinolaryngology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.
| | - Garth D Ehrlich
- Department of Microbiology and Immunology and Department of Otolaryngology - Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, USA
| | | | - Kensei Komatsu
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, USA
| | - Kevin Mason
- The Research Institute at Nationwide Children's Hospital, Infectious Diseases Institute, The Ohio State University School of Medicine, Columbus, OH, USA
| | - Åsa Melhus
- Department of Medical Sciences, Section of Clinical Bacteriology, Uppsala University, Uppsala, Sweden
| | - Janak A Patel
- Department of Infection Control & Healthcare Epidemiology and Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, USA
| | - Shiyan Vijayasekaran
- Perth ENT Centre, Perth Children's Hospital, University of Western Australia, Perth, Australia
| | - Allen Ryan
- Department of Surgery, Division of Otolaryngology, University of California San Diego, San Diego, CA, USA
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Rapp AR, Okorodudu AO, Nguyen DK, Patel JA. A True Negative HIV Antibody Result with an Initially Incorrect Interpretation-A Diagnostic Conundrum in HIV Screening. Clin Chem 2021; 67:1318-1321. [PMID: 34597369 DOI: 10.1093/clinchem/hvab121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 12/29/2020] [Indexed: 11/13/2022]
Affiliation(s)
- Alexandra R Rapp
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, TX
| | - Anthony O Okorodudu
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, TX
| | - Diana K Nguyen
- Department of Pediatrics, University of Texas Medical Branch at Galveston, Galveston, TX
| | - Janak A Patel
- Department of Pediatrics, University of Texas Medical Branch at Galveston, Galveston, TX
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Patel JA, Badiani AA, Nielsen FBH, Assi S, Unadkat V, Patel B, Courtney C, Hallas L. COVID-19 and autism: Uncertainty, distress and feeling forgotten. Public Health Pract (Oxf) 2020; 1:100034. [PMID: 34173571 PMCID: PMC7392884 DOI: 10.1016/j.puhip.2020.100034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/20/2020] [Accepted: 07/26/2020] [Indexed: 12/22/2022] Open
Affiliation(s)
- J A Patel
- London School of Hygiene and Tropical Medicine, United Kingdom.,University of Southampton School of Medicine, United Kingdom
| | - A A Badiani
- University of Liverpool School of Medicine, United Kingdom
| | - F B H Nielsen
- London School of Hygiene and Tropical Medicine, United Kingdom
| | - S Assi
- University of Southampton School of Medicine, United Kingdom
| | - V Unadkat
- University of Southampton School of Medicine, United Kingdom
| | - B Patel
- University of Liverpool School of Medicine, United Kingdom
| | - C Courtney
- University of Liverpool School of Medicine, United Kingdom
| | - L Hallas
- London School of Hygiene and Tropical Medicine, United Kingdom
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Patel JA, Nielsen FBH, Badiani AA, Assi S, Unadkat VA, Patel B, Ravindrane R, Wardle H. Poverty, inequality and COVID-19: the forgotten vulnerable. Public Health 2020; 183:110-111. [PMID: 32502699 PMCID: PMC7221360 DOI: 10.1016/j.puhe.2020.05.006] [Citation(s) in RCA: 375] [Impact Index Per Article: 93.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 05/02/2020] [Indexed: 12/16/2022]
Affiliation(s)
- J A Patel
- London School of Hygiene and Tropical Medicine, UK; University of Southampton School of Medicine, UK.
| | | | - A A Badiani
- University of Liverpool School of Medicine, UK
| | - S Assi
- University of Southampton School of Medicine, UK
| | - V A Unadkat
- University of Southampton School of Medicine, UK
| | - B Patel
- University of Liverpool School of Medicine, UK
| | - R Ravindrane
- London School of Hygiene and Tropical Medicine, UK
| | - H Wardle
- London School of Hygiene and Tropical Medicine, UK
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Pathak PK, Dhami AJ, Chaudhari DV, Patel JA. Motion and kinematics parameters of frozen-thawed bovine spermatozoa assessed by Biovis CASA. IJDS 2019. [DOI: 10.33785/ijds.2019.v72i03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Larson ED, Magno JPM, Steritz MJ, Llanes EGDV, Cardwell J, Pedro M, Roberts TB, Einarsdottir E, Rosanes RAQ, Greenlee C, Santos RAP, Yousaf A, Streubel SO, Santos ATR, Ruiz AG, Lagrana-Villagracia SM, Ray D, Yarza TKL, Scholes MA, Anderson CB, Acharya A, Gubbels SP, Bamshad MJ, Cass SP, Lee NR, Shaikh RS, Nickerson DA, Mohlke KL, Prager JD, Cruz TLG, Yoon PJ, Abes GT, Schwartz DA, Chan AL, Wine TM, Cutiongco-de la Paz EM, Friedman N, Kechris K, Kere J, Leal SM, Yang IV, Patel JA, Tantoco MLC, Riazuddin S, Chan KH, Mattila PS, Reyes-Quintos MRT, Ahmed ZM, Jenkins HA, Chonmaitree T, Hafrén L, Chiong CM, Santos-Cortez RLP. A2ML1 and otitis media: novel variants, differential expression, and relevant pathways. Hum Mutat 2019; 40:1156-1171. [PMID: 31009165 DOI: 10.1002/humu.23769] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 02/26/2019] [Accepted: 04/18/2019] [Indexed: 12/16/2022]
Abstract
A genetic basis for otitis media is established, however, the role of rare variants in disease etiology is largely unknown. Previously a duplication variant within A2ML1 was identified as a significant risk factor for otitis media in an indigenous Filipino population and in US children. In this report exome and Sanger sequencing was performed using DNA samples from the indigenous Filipino population, Filipino cochlear implantees, US probands, Finnish, and Pakistani families with otitis media. Sixteen novel, damaging A2ML1 variants identified in otitis media patients were rare or low-frequency in population-matched controls. In the indigenous population, both gingivitis and A2ML1 variants including the known duplication variant and the novel splice variant c.4061 + 1 G>C were independently associated with otitis media. Sequencing of salivary RNA samples from indigenous Filipinos demonstrated lower A2ML1 expression according to the carriage of A2ML1 variants. Sequencing of additional salivary RNA samples from US patients with otitis media revealed differentially expressed genes that are highly correlated with A2ML1 expression levels. In particular, RND3 is upregulated in both A2ML1 variant carriers and high-A2ML1 expressors. These findings support a role for A2ML1 in keratinocyte differentiation within the middle ear as part of otitis media pathology and the potential application of ROCK inhibition in otitis media.
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Affiliation(s)
- Eric D Larson
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Jose Pedrito M Magno
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines
| | - Matthew J Steritz
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Erasmo Gonzalo D V Llanes
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Jonathan Cardwell
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Melquiadesa Pedro
- Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Tori Bootpetch Roberts
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Elisabet Einarsdottir
- Folkhälsan Institute of Genetics and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Rose Anne Q Rosanes
- Department of Community Dentistry, College of Dentistry, University of the Philippines Manila, Manila, Philippines
| | - Christopher Greenlee
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | | | - Ayesha Yousaf
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Sven-Olrik Streubel
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | | | - Amanda G Ruiz
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Sheryl Mae Lagrana-Villagracia
- Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Dylan Ray
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Talitha Karisse L Yarza
- Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Newborn Hearing Screening Reference Center, University of the Philippines Manila - National Institutes of Health (NIH), Manila, Philippines
| | - Melissa A Scholes
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Catherine B Anderson
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Anushree Acharya
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Samuel P Gubbels
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Michael J Bamshad
- Department of Genome Sciences, University of Washington, Seattle, Washington
| | - Stephen P Cass
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Nanette R Lee
- USC-Office of Population Studies Foundation, Inc. and Department of Anthropology, Sociology and History, University of San Carlos, Cebu, Philippines
| | - Rehan S Shaikh
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Deborah A Nickerson
- Department of Genome Sciences, University of Washington, Seattle, Washington
| | - Karen L Mohlke
- Department of Genetics, University of North Carolina, Chapel Hill, North Carolina
| | - Jeremy D Prager
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Teresa Luisa G Cruz
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Patricia J Yoon
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Generoso T Abes
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - David A Schwartz
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Abner L Chan
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Todd M Wine
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Eva Maria Cutiongco-de la Paz
- Philippine Genome Center, University of the Philippines, Quezon City, Philippines.,University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Norman Friedman
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Katerina Kechris
- Department of Biostatistics and Bioinformatics, Colorado School of Public Health, Aurora, Colorado
| | - Juha Kere
- Folkhälsan Institute of Genetics and Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Suzanne M Leal
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Ivana V Yang
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Janak A Patel
- Division of Infectious Diseases, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
| | - Ma Leah C Tantoco
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Saima Riazuddin
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Maryland School of Medicine, Baltimore, Maryland
| | - Kenny H Chan
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Department of Pediatric Otolaryngology, Children's Hospital Colorado, Aurora, Colorado
| | - Petri S Mattila
- Department of Otorhinolaryngology, Head & Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Maria Rina T Reyes-Quintos
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Newborn Hearing Screening Reference Center, University of the Philippines Manila - National Institutes of Health (NIH), Manila, Philippines.,University of the Philippines Manila - National Institutes of Health, Manila, Philippines
| | - Zubair M Ahmed
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Maryland School of Medicine, Baltimore, Maryland
| | - Herman A Jenkins
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Tasnee Chonmaitree
- Division of Infectious Diseases, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
| | - Lena Hafrén
- Department of Otorhinolaryngology, Head & Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Charlotte M Chiong
- Department of Otorhinolaryngology, University of the Philippines Manila College of Medicine - Philippine General Hospital, Manila, Philippines.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Newborn Hearing Screening Reference Center, University of the Philippines Manila - National Institutes of Health (NIH), Manila, Philippines
| | - Regie Lyn P Santos-Cortez
- Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado.,Philippine National Ear Institute, University of the Philippines Manila - National Institutes of Health, Manila, Philippines.,Center for Children's Surgery, Children's Hospital Colorado, Aurora, Colorado
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Patel JA. Infections of the Ears, Nose, Throat, and Sinuses. Clin Infect Dis 2019. [DOI: 10.1093/cid/ciy893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Janak A Patel
- Division of Pediatric Infectious Diseases and Immunology, Children’s Hospital, University of Texas Medical Branch, Galveston
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Chaudhary NJ, Patel DM, Dhami AJ, Vala KB, Hadiya KK, Patel JA. Effect of Doublesynch and Estradoublesynch protocols on estrus induction, conception rate, plasma progesterone, protein, and cholesterol profile in anestrus Gir heifers. Vet World 2018; 11:542-548. [PMID: 29805223 PMCID: PMC5960797 DOI: 10.14202/vetworld.2018.542-548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 03/31/2018] [Indexed: 11/20/2022] Open
Abstract
Aim This study aimed to evaluate the efficacy of Doublesynch and Estradoublesynch protocols on estrus induction, conception rates, plasma progesterone, protein, and cholesterol profile in anestrus Gir heifers. Materials and Methods In this study, 50 pubertal anestrus Gir heifers were selected from the field and farm conditions. The heifers were dewormed (injection ivermectin, 100 mg, s/c) and supplemented with minerals and vitamins (injection organic phosphorus 800 mg and injection Vitamin AD3E and Biotin 10 ml i/m) and multi-mineral bolus at 1 bolus daily for 7 days. The heifers were randomly divided into three groups: Doublesynch (n=20), Estradoublesynch (n=20), and control (n=10). The animals were monitored for estrus response, estrus interval, behavioral signs, and conception rates after induced/first, second, and third cycle post-treatment. Blood samples were obtained on day 0, day 9, day 12, and on day 12 post-artificial insemination (AI) for determination of plasma progesterone, protein, and cholesterol profile. Results The estrus response rate between Doublesynch and Estradoublesynch protocols was similar between treated heifers (85% and 95%). The interval from the second prostaglandin F2α (PGF2α) injection to estrus induction did not differ between the groups (63.87±4.19 vs. 58.27±3.83 h). The conception rates following induced estrus (20% vs. 30%), at the second cycle (23.07% vs. 16.66%), at the third cycle (22.22% vs. 30.00%), and the overall conception rate (45% and 55%) within 27.89±5.75 and 26.45±5.48 days were the same across the treatment groups. The mean plasma progesterone concentrations were significantly (p<0.01) higher on day 9 (second PGF2α injection) and day 12 post-AI compared to day 0 (first PGF2α injection) and the day of fixed-timed artificial insemination. The concentrations were also significantly (p<0.05) higher in conceived than non-conceived heifers on day 9 of treatment and day 12 post-AI in both the protocols. The mean plasma cholesterol concentrations were significantly higher during peak follicular and luteal phases compared to the initial anestrus phase in both the protocols. The values were also higher in non-conceived than conceived animals in both the protocols. The plasma protein profile was not influenced by the sampling days or conceived and non-conceived status. Conclusion The results showed that both Doublesynch and Estradoublesynch protocols resulted in similar estrus induction and conception rates with modulation of plasma progesterone and cholesterol profile in anestrus Gir heifers.
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Affiliation(s)
- N J Chaudhary
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - D M Patel
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - A J Dhami
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - K B Vala
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Junagadh Agricultural University, Junagadh - 362 001, Gujarat, India
| | - K K Hadiya
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - J A Patel
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
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Chonmaitree T, Jennings K, Golovko G, Khanipov K, Pimenova M, Patel JA, McCormick DP, Loeffelholz MJ, Fofanov Y. Nasopharyngeal microbiota in infants and changes during viral upper respiratory tract infection and acute otitis media. PLoS One 2017; 12:e0180630. [PMID: 28708872 PMCID: PMC5510840 DOI: 10.1371/journal.pone.0180630] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 06/18/2017] [Indexed: 01/21/2023] Open
Abstract
Background Interferences between pathogenic bacteria and specific commensals are known. We determined the interactions between nasopharyngeal microbial pathogens and commensals during viral upper respiratory tract infection (URI) and acute otitis media (AOM) in infants. Methods We analyzed 971 specimens collected monthly and during URI and AOM episodes from 139 infants. The 16S rRNA V4 gene regions were sequenced on the Illumina MiSeq platform. Results Among the high abundant genus-level nasopharyngeal microbiota were Moraxella, Haemophilus, and Streptococcus (3 otopathogen genera), Corynebacterium, Dolosigranulum, Staphylococcus, Acinetobacter, Pseudomonas, and Bifidobacterium. Bacterial diversity was lower in culture-positive samples for Streptococcus pneumoniae, and Haemophilus influenzae, compared to cultured-negative samples. URI frequencies were positively associated with increasing trend in otopathogen colonization. AOM frequencies were associated with decreasing trend in Micrococcus colonization. During URI and AOM, there were increases in abundance of otopathogen genera and decreases in Pseudomonas, Myroides, Yersinia, and Sphingomonas. Otopathogen abundance was increased during symptomatic viral infection, but not during asymptomatic infection. The risk for AOM complicating URI was reduced by increased abundance of Staphylococcus and Sphingobium. Conclusion Otopathogen genera played the key roles in URI and AOM occurrences. Staphylococcus counteracts otopathogens thus Staphylococcal colonization may be beneficial, rather than harmful. While Sphingobium may play a role in preventing AOM complicating URI, the commonly used probiotic Bifidobacterium did not play a significant role during URI or AOM. The role of less common commensals in counteracting the deleterious effects of otopathogens requires further studies.
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Affiliation(s)
- Tasnee Chonmaitree
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, United States of America
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States of America
- * E-mail:
| | - Kristofer Jennings
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Georgiy Golovko
- Sealy Center for Structural Biology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Kamil Khanipov
- Sealy Center for Structural Biology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Maria Pimenova
- Sealy Center for Structural Biology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Janak A. Patel
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, United States of America
| | - David P. McCormick
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Michael J. Loeffelholz
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States of America
| | - Yuriy Fofanov
- Sealy Center for Structural Biology, University of Texas Medical Branch, Galveston, TX, United States of America
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Barenkamp SJ, Chonmaitree T, Hakansson AP, Heikkinen T, King S, Nokso-Koivisto J, Novotny LA, Patel JA, Pettigrew M, Swords WE. Panel 4: Report of the Microbiology Panel. Otolaryngol Head Neck Surg 2017; 156:S51-S62. [PMID: 28372529 DOI: 10.1177/0194599816639028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective To perform a comprehensive review of the literature from July 2011 until June 2015 on the virology and bacteriology of otitis media in children. Data Sources PubMed database of the National Library of Medicine. Review Methods Two subpanels comprising experts in the virology and bacteriology of otitis media were created. Each panel reviewed the relevant literature in the fields of virology and bacteriology and generated draft reviews. These initial reviews were distributed to all panel members prior to meeting together at the Post-symposium Research Conference of the 18th International Symposium on Recent Advances in Otitis Media, National Harbor, Maryland, in June 2015. A final draft was created, circulated, and approved by all panel members. Conclusions Excellent progress has been made in the past 4 years in advancing our understanding of the microbiology of otitis media. Numerous advances were made in basic laboratory studies, in animal models of otitis media, in better understanding the epidemiology of disease, and in clinical practice. Implications for Practice (1) Many viruses cause acute otitis media without bacterial coinfection, and such cases do not require antibiotic treatment. (2) When respiratory syncytial virus, metapneumovirus, and influenza virus peak in the community, practitioners can expect to see an increase in clinical otitis media cases. (3) Biomarkers that predict which children with upper respiratory tract infections will develop otitis media may be available in the future. (4) Compounds that target newly identified bacterial virulence determinants may be available as future treatment options for children with otitis media.
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Affiliation(s)
- Stephen J Barenkamp
- 1 Department of Pediatrics, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Tasnee Chonmaitree
- 2 Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, USA
| | | | - Terho Heikkinen
- 4 Department of Pediatrics, University of Turku and Turku University Hospital, Turku, Finland
| | - Samantha King
- 5 The Research Institute at Nationwide Children's Hospital and Ohio State University, Columbus, Ohio, USA
| | - Johanna Nokso-Koivisto
- 6 Department of Otorhinolaryngology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Laura A Novotny
- 5 The Research Institute at Nationwide Children's Hospital and Ohio State University, Columbus, Ohio, USA
| | - Janak A Patel
- 2 Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, USA
| | - Melinda Pettigrew
- 7 Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut, USA
| | - W Edward Swords
- 8 Department of Microbiology and Immunology, Wake Forest University, Winston-Salem, North Carolina, USA
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Ilyas MIM, Zangbar B, Nfonsam VN, Maegawa FA, Joseph BA, Patel JA, Wexner SD. Are there differences in outcome after elective sigmoidectomy for diverticular disease and for cancer? A national inpatient study. Colorectal Dis 2017; 19:260-265. [PMID: 27422847 DOI: 10.1111/codi.13461] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 05/20/2016] [Indexed: 12/15/2022]
Abstract
AIM The postoperative outcome after elective sigmoidectomy for diverticulitis has not been compared to that for cancer. The study aimed to evaluate the differences in the postoperative outcome after sigmoidectomy for diverticular disease and cancer. METHOD The National Inpatient Sample Database was used to identify patients who underwent elective sigmoid resection for diverticular disease or cancer between 2004 and 2011. After excluding patients with metastatic cancer and preoperative weight loss, sigmoid cancer and diverticulitis patients were matched using propensity score, controlling for age, gender, race, type of operation (open vs laparoscopic) and comorbidities. The end-points of interest were infective complications, reoperation, anastomotic leakage, rebleeding, length of hospital stay and in-hospital mortality. RESULTS After propensity score matching (diverticulitis 11 192 patients, sigmoid cancer 11 192 patients), the mean age was 65 ± 12.5 years, 53.8% were male and 61.5% were Caucasian. Only 18.0% of the operations were done by laparoscopy. The overall complication rate was 17.7% and the in-hospital mortality rate was 0.9%. The diverticulitis group had a higher rate of surgical site infection (3.2% vs 2.6%, P = 0.004), intra-abdominal abscess formation (1.2% vs 0.4%, P < 0.0001) and reoperation (6.1% vs 4.1%, P < 0.0001) compared with the cancer group. The cancer group had a higher incidence of pneumonia (1.9% vs 1.5%, P = 0.01) and anastomotic leakage (9.2% vs 8.3%, P = 0.001). There was no difference in sepsis, deep vein thrombosis, respiratory failure, renal failure, rebleeding, overall complication rate or length of hospital stay. Subgroup analysis showed a higher in-hospital mortality for cancer than for diverticulitis patients whether resected by open or by laparoscopic surgery. CONCLUSION Although elective sigmoidectomy for diverticular disease has a higher risk of infective complications, elective sigmoidectomy for cancer has a higher risk of anastomotic leakage.
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Affiliation(s)
- M I M Ilyas
- Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - B Zangbar
- Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - V N Nfonsam
- Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - F A Maegawa
- Department of Surgery, Southern Arizona VA Health Care System, Tucson, Arizona, USA
| | - B A Joseph
- Department of Surgery, University of Arizona, Tucson, Arizona, USA
| | - J A Patel
- Department of Colorectal Surgery, University of Kentucky, Lexington, Kentucky, USA
| | - S D Wexner
- Department of Colorectal Surgery, Cleveland Clinic Florida, Weston, Florida, USA
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Barenkamp SJ, Ogra PL, Bakaletz LO, Chonmaitree T, Heikkinen T, Hurst DS, Kawauchi H, Kurono Y, Leiberman A, Murphy TF, Patel JA, Sih TM, St Geme JW, Stenfors LE. 5. Microbiology and Immunology. Ann Otol Rhinol Laryngol 2016. [DOI: 10.1177/00034894051140s109] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Ogra PL, Barenkamp SJ, DeMaria TF, Bakaletz LO, Chonmaitree T, Heikkinen T, Hurst DS, Kawauchi H, Kurono Y, Patel JA, Sih TM, Stenfors LE, Suzuki M. 6. Microbiology and Immunology. Ann Otol Rhinol Laryngol 2016. [DOI: 10.1177/00034894021110s309] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Giebink GS, Bakaletz LO, Barenkamp SJ, Eskola J, Green B, Gu XX, Harada T, Heikkinen T, Karma P, Klein JO, Kurono Y, Mogi G, Murphy TF, Ogra PL, Patel JA, Suzuki M, Yamanaka N. 7. Vaccine. Ann Otol Rhinol Laryngol 2016. [DOI: 10.1177/00034894021110s310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Giebink GS, Bakaletz LO, Barenkamp SJ, Green B, Gu XX, Heikkinen T, Hotomi M, Karma P, Kurono Y, Kyd JM, Murphy TF, Ogra PL, Patel JA, Pelton SI. 6. Vaccine. Ann Otol Rhinol Laryngol 2016. [DOI: 10.1177/00034894051140s110] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Chonmaitree T, Trujillo R, Jennings K, Alvarez-Fernandez P, Patel JA, Loeffelholz MJ, Nokso-Koivisto J, Matalon R, Pyles RB, Miller AL, McCormick DP. Acute Otitis Media and Other Complications of Viral Respiratory Infection. Pediatrics 2016; 137:peds.2015-3555. [PMID: 27020793 PMCID: PMC4811317 DOI: 10.1542/peds.2015-3555] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/22/2016] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Viral upper and lower respiratory tract infections (URI, LRI) are common in infants. We determined the prevalence of viral URI and its complications, including acute otitis media (AOM) and LRI, and assessed the effect of bacterial-viral interactions, and genetic and environmental risks on AOM development. METHODS Healthy infants were enrolled from near birth and followed to the first episode of AOM up to 12 months of age. Nasopharyngeal specimens were collected at monthly intervals (months 1-6, 9) and during viral URI episodes for bacterial culture and viral polymerase chain reaction studies. Subjects were followed closely for AOM development. RESULTS A total of 367 infants were followed for 286 child-years; 887 URI (305 infants) and 180 AOM episodes (143 infants) were documented. Prevalence of URI, LRI, and AOM in the first year was 3.2, 0.25, and 0.67 per child-year, respectively. Cumulative AOM incidence by ages 3, 6, and 12 months was 6%, 23%, and 46%. Infants with and without AOM had 4.7 and 2.3 URI episodes per child-year, respectively (P < .002). Pathogenic bacterial colonization rates by month were significantly higher in infants with AOM (P < .005). Breastfeeding reduced both URI and AOM risks (P < .05). Significant bacterial-viral interactions occurred with Moraxella catarrhalis and a variety of respiratory viruses and altered URI and AOM risks. CONCLUSIONS Almost half of infants experienced AOM by age 1. Important AOM risk factors included frequent viral URI, pathogenic bacterial colonization, and lack of breastfeeding. Bacterial-viral interactions may play a significant role in AOM pathogenesis and deserve further investigation.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Richard B. Pyles
- Departments of Pediatrics, ,Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas
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Dhami AJ, Nakrani BB, Hadiya KK, Patel JA, Shah RG. Comparative efficacy of different estrus synchronization protocols on estrus induction response, fertility and plasma progesterone and biochemical profile in crossbred anestrus cows. Vet World 2015; 8:1310-6. [PMID: 27047035 PMCID: PMC4774743 DOI: 10.14202/vetworld.2015.1310-1316] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/24/2015] [Accepted: 10/05/2015] [Indexed: 11/30/2022] Open
Abstract
Aim: To evaluate estrus induction response and fertility including plasma progesterone and biochemical profile following use of three standard hormonal protocols in anestrus crossbred cows. Materials and Methods: The study was carried out on 40 true anestrus and 10 normal cyclic cows. 10 anestrus cows each were treated with standard intravaginal controlled internal drug release (CIDR) device, Ovsynch (GPG) protocol, and Norgestomet ear implant with fixed-time artificial insemination (FTAI). 10 anestrus cows were kept as untreated control while 10 cows exhibiting the first estrus within 90 days postpartum without any treatment served as normal cyclic control. Blood samples were obtained from treated cows on day 0, 7, 9 (AI) of treatment and day 21 post-AI, and from control groups on the day of AI and day 21 post-AI for estimation of plasma progesterone, protein, cholesterol, calcium, and inorganic phosphorus profile. Results: The use of CIDR, Ovsynch, and Norgestomet ear implant protocols resulted in 100% estrus induction with conception rates at induced estrus of 60%, 50%, and 50%, and the overall of three cycles as 80%, 80%, and 70%. In untreated anestrus control (n=10), only three cows exhibited spontaneous estrus within 90 days of follow-up and conceived giving the first service and overall conception rates of 66.66% and 30.00%, respectively. In normal cyclic control (n=10), the conception rates at first and overall of three cycles were 50% and 80%. The overall mean plasma progesterone (P4) concentrations in anestrus cows studied on day 0 (initiation), 7 (prostaglandin injection and/or removal of implant), 9 (FTAI) of treatment and on day 21 post-AI revealed that the values on day 7 and 21 were significantly (p<0.01) higher than other two periods in all three groups. The concentrations were significantly (p<0.05) higher in conceived than non-conceived group on day 21 post-AI in CIDR (4.36±0.12 vs. 1.65±0.82 ng/ml) and Ovsynch (4.85±0.62 vs. 1.59±0.34 ng/ml), but not in Norgestomet ear implant (4.50±0.53 vs. 3.02±1.15 ng/ml) or normal cyclic group (5.39±0.67 vs. 3.13±0.37 ng/ml). The cholesterol and protein levels were significantly higher, but not the calcium and phosphorus, in normal cyclic control than in anestrus groups. The influence of treatment days and pregnancy status was not significant for any of the biochemical constituents in any of the groups. Conclusion: Ovsynch and/or CIDR synchronization protocol can be effectively used to improve fertility up to 80% in anestrus cows, as compared to 30% in anestrus control, combined with plasma progesterone to delineate the reproductive status before and after treatment.
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Affiliation(s)
- A J Dhami
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand-388 001, Gujarat, India
| | - B B Nakrani
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand-388 001, Gujarat, India
| | - K K Hadiya
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand-388 001, Gujarat, India
| | - J A Patel
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand-388 001, Gujarat, India
| | - R G Shah
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand-388 001, Gujarat, India
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Santos-Cortez RLP, Chiong CM, Reyes-Quintos MRT, Tantoco MLC, Wang X, Acharya A, Abbe I, Giese AP, Smith JD, Allen EK, Li B, Cutiongco-de la Paz EM, Garcia MC, Llanes EGD, Labra PJ, Gloria-Cruz TLI, Chan AL, Wang GT, Daly KA, Shendure J, Bamshad MJ, Nickerson DA, Patel JA, Riazuddin S, Sale MM, Chonmaitree T, Ahmed ZM, Abes GT, Leal SM. Rare A2ML1 variants confer susceptibility to otitis media. Nat Genet 2015; 47:917-20. [PMID: 26121085 PMCID: PMC4528370 DOI: 10.1038/ng.3347] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 06/03/2015] [Indexed: 11/15/2022]
Abstract
A duplication variant within the middle ear-specific gene A2ML1 cosegregates with otitis media in an indigenous Filipino pedigree (LOD score = 7.5 at reduced penetrance) and lies within a founder haplotype that is also shared by 3 otitis-prone European-American and Hispanic-American children but is absent in non-otitis-prone children and >62,000 next-generation sequences. We identified seven additional A2ML1 variants in six otitis-prone children. Collectively, our studies support a role for A2ML1 in the pathophysiology of otitis media.
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Affiliation(s)
- Regie Lyn P. Santos-Cortez
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Charlotte M. Chiong
- Philippine National Ear Institute, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Ma. Rina T. Reyes-Quintos
- Philippine National Ear Institute, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Ma. Leah C. Tantoco
- Philippine National Ear Institute, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
| | - Xin Wang
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Anushree Acharya
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Izoduwa Abbe
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Arnaud P. Giese
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, Maryland, USA
| | - Joshua D. Smith
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - E. Kaitlynn Allen
- Center for Public Health Genomics, University of Virginia School of Medicine, Charlottesville, Virginia, USA
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, Virginia, USA
| | - Biao Li
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Eva Maria Cutiongco-de la Paz
- Institute of Human Genetics, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
- Department of Pediatrics, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Marieflor Cristy Garcia
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Erasmo Gonzalo D.V. Llanes
- Philippine National Ear Institute, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Patrick John Labra
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Teresa Luisa I. Gloria-Cruz
- Philippine National Ear Institute, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Abner L. Chan
- Philippine National Ear Institute, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Gao T. Wang
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Kathleen A. Daly
- Department of Otolaryngology, Head and Neck Surgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - Jay Shendure
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - Michael J. Bamshad
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - Deborah A. Nickerson
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - Janak A. Patel
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, USA
| | - Saima Riazuddin
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, Maryland, USA
| | - Michele M. Sale
- Center for Public Health Genomics, University of Virginia School of Medicine, Charlottesville, Virginia, USA
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, Virginia, USA
- Department of Public Health Sciences, University of Virginia, Charlottesville, Virginia, USA
| | | | - Tasnee Chonmaitree
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, USA
| | - Zubair M. Ahmed
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, Maryland, USA
| | - Generoso T. Abes
- Philippine National Ear Institute, University of the Philippines Manila – National Institutes of Health, Manila, Philippines
- Department of Otorhinolaryngology, University of the Philippines College of Medicine – Philippine General Hospital, Manila, Philippines
| | - Suzanne M. Leal
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
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Chaudhari DV, Dhami AJ, Hadiya KK, Patel JA. Relative efficacy of egg yolk and soya milk-based extenders for cryopreservation (-196°C) of buffalo semen. Vet World 2015; 8:239-44. [PMID: 27047080 PMCID: PMC4774711 DOI: 10.14202/vetworld.2015.239-244] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/03/2015] [Accepted: 01/12/2015] [Indexed: 11/25/2022] Open
Abstract
Aim: The aim was to compare commercially available soybean milk-based extenders, viz. Bioxcell® and Optixcell® (IMV, France) with standard Tris-citrate-fructose-egg yolk-glycerol (TFYG) extender for cryopreservation of buffalo semen. Materials and Methods: Semen was collected twice a week in artificial vagina from six sexually mature, 4-6 years old, healthy breeding bulls of Surti buffalo breed. In all 48 qualifying ejaculates (8 per bull) having initial motility >70% were split into three equal aliquots and were diluted (at 34°C keeping 100×106 sperm ml−1) in TFYG, Bioxcell and Optixcell extenders. The French mini straws filled from each aliquot were gradually cooled to 4-5°C, equilibrated at 4°C for 4 h and frozen in liquid nitrogen 2 vapor using programmable biofreezer. Just before freezing (post-equilibration) and 24 h after frozen storage, the samples were evaluated for various sperm quality parameters using standard protocols. Frozen semen straws were thawed in a water bath at 37°C for 30 s. The post-thaw incubation survival (37°C for 1 h) was assessed through motility rating at 0, 30 and 60 min of incubation. Results: The mean percentages of prefreeze sperms in TFYG, Bioxcell and Optixcell extenders in terms of progressive motility (69.48±0.37, 68.02±0.49, 70.94±0.38), viability (79.21±0.39, 77.38±0.48, 81.58±0.38), total abnormalities (7.90±0.14, 8.60±0.16, 7.08±0.15), intact acrosome (89.54± 0.18, 88.58±0.22, 90.52±0.21) and hypoosmotic swelling (HOS) reactivity (67.96±0.32, 65.65±0.42, 70.23±0.37) varied significantly (p<0.05) between extenders. Similar pattern of significant (p<0.05) variations between these extenders for post-thaw sperm progressive motility (47.71±0.79, 44.38±0.85, 49.90±0.90), viability (57.19±0.79, 53.85±0.84, 59.67±0.91), total abnormalities (12.33±0.17, 12.75±0.21, 11.27±0.18), intact acrosome (76.83±0.23, 75.90± 0.27, 78.50±0.25) and HOS reactivity (45.02±0.84, 42.31±0.82, 47.81±0.90) was also observed for TFYG, Bioxcell and Optixcell extenders. The recently launched improved soybean milk-based extender Optixcell excelled the older Bioxcell extender and even standard TFYG in respect of some of the sperm quality parameters. Conclusion: The advantages of soy lecithin-based bovine semen extenders over egg yolk regarding sanitary issues are unquestionable but still egg yolk-based semen extenders are widely used because of the cost factor and good in vivo fertility results.
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Affiliation(s)
- D V Chaudhari
- Sabarmati Ashram Gaushala, Ahmedabad, Gujarat, India
| | - A J Dhami
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, India
| | - K K Hadiya
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, India
| | - J A Patel
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, India
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Chonmaitree T, Alvarez-Fernandez P, Jennings K, Trujillo R, Marom T, Loeffelholz MJ, Miller AL, McCormick DP, Patel JA, Pyles RB. Symptomatic and asymptomatic respiratory viral infections in the first year of life: association with acute otitis media development. Clin Infect Dis 2014; 60:1-9. [PMID: 25205769 PMCID: PMC4318943 DOI: 10.1093/cid/ciu714] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Sensitive viral diagnostic methods have identified increasing prevalence of asymptomatic viral infection. This study determined the epidemiologic characteristics and etiology of asymptomatic upper respiratory tract infection in the first year of life and the association with acute otitis media complication. Background. Sensitive diagnostic assays have increased the detection of viruses in asymptomatic individuals. The clinical significance of asymptomatic respiratory viral infection in infants is unknown. Methods. High-throughput, quantitative polymerase chain reaction assays were used to detect 13 common respiratory viruses from nasopharyngeal specimens collected during 2028 visits from 362 infants followed from near birth up to 12 months of age. Specimens were collected at monthly interval (months 1–6 and month 9) and during upper respiratory tract infection (URTI) episodes. Subjects were followed closely for acute otitis media (AOM) development. Results. Viruses were detected in 76% of 394 URTI specimens and 27% of asymptomatic monthly specimens. Rhinovirus was detected most often; multiple viruses were detected in 29% of the specimens. Generalized mixed-model analyses associated symptoms with increasing age and female sex; detection of respiratory syncytial virus (RSV), influenza, rhinovirus, metapneumovirus, and adenovirus was highly associated with symptoms. Increasing age was also associated with multiple virus detection. Overall, 403 asymptomatic viral infections in 237 infants were identified. Viral load was significantly higher in URTI specimens than asymptomatic specimens but did not differentiate cases of URTI with and without AOM complication. The rate of AOM complicating URTI was 27%; no AOM occurred following asymptomatic viral infections. AOM development was associated with increasing age and infection with RSV, rhinovirus, enterovirus, adenovirus, and bocavirus. Conclusions. Compared to symptomatic infection, asymptomatic viral infection in infants is associated with young age, male sex, low viral load, specific viruses, and single virus detection. Asymptomatic viral infection did not result in AOM.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Richard B Pyles
- Departments of Pediatrics Microbiology and Immunology, University of Texas Medical Branch, Galveston
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Marom T, Alvarez PE, Jennings K, Patel JA, McCormick D, Chonmaitree T. Acute Bacterial Sinusitis Complicating Viral Upper Respiratory Tract Infection in Young Children. Otolaryngol Head Neck Surg 2014. [DOI: 10.1177/0194599814541627a256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives: (1) Analyze the clinical characteristics of upper respiratory infections (URIs) complicated by acute bacterial sinusitis (ABS) in young children. (2) Describe the bacteria and viruses isolated in nasopharyngeal specimens in children with ABS. Methods: We identified ABS episodes in a prospective, longitudinal cohort study of 294 children (aged 6-35 months at enrollment), who were followed up for one year to capture all URI episodes and complications. At the initial URI visit (median day = 4), nasopharyngeal samples were obtained for bacterial cultures and viral studies. The study was conducted at the University of Texas Medical Branch, Galveston, during 2003-2007. Results: Of 1295 documented URI episodes, 103 (8%) episodes (in 73 children) were complicated by ABS, 32 of which were concurrent with acute otitis media. The majority (72%) of ABS episodes were diagnosed based on persistent symptoms or a biphasic course. The average age was 18.8 ± 7.2 months; white children were more likely to have ABS episodes than blacks ( P = .01). Viruses were detected in 63% during the initial URI visit; rhinovirus detection was positively correlated with ABS ( P = .01). Bacterial cultures were positive in 82/83 (99%) available samples; polymicrobial (56%), Moraxella catarrhalis (20%) and Streptococcus pneumoniae (10%) were the most common cultures. Presence of pathogenic bacteria overall and presence of M. catarrhalis during URI were positively correlated with ABS risk ( P = .04 for both). Conclusions: ABS complicates 8% of URIs in children. Girls have more frequent ABS episodes than boys. Presence of rhinovirus and M catarrhalis during URI are positively correlated with ABS risk.
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Nokso-Koivisto J, Chonmaitree T, Jennings K, Matalon R, Block S, Patel JA. Polymorphisms of immunity genes and susceptibility to otitis media in children. PLoS One 2014; 9:e93930. [PMID: 24718616 PMCID: PMC3981756 DOI: 10.1371/journal.pone.0093930] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 03/11/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Acute otitis media (OM) is a common disease which often develops through complex interactions between the host, the pathogen and environmental factors. We studied single nucleotide polymorphisms (SNPs) of genes involved in innate and adaptive immunity, and other host and environmental factors for their role in OM. METHODS Using Sequenom Massarray platform, 21 SNPs were studied in 653 children from prospective (n = 202) and retrospective (n = 451) cohorts. Data were analyzed for the relationship between SNPs and upper respiratory infection (URI) frequency, risk of acute OM during URI episodes, and proneness to recurrent OM. RESULTS Increased risk for OM proneness was associated with CX3CR1 (Thr280Met) SNP and with a jointly interactive group of IL-10 (-1082) SNP, IL-1β (-511) wild type genotype and white race. Family history of OM proneness independently increased the risk for frequent URIs, OM occurrence during URI, and OM proneness. Additionally, IL-1β (-31) SNP was associated with increased risk for frequent URIs, but IL-10 (-592), IL-1β (-511), IL-5 (-746) and IL-8 (-251) SNPs were associated with decreased risk of URI. CONCLUSION IL-1β (-31), CX3CR1 (Thr280Met), IL-10 (-1082) and IL-1β (-511) SNPs were associated with increased risk for frequent URIs or OM proneness.
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Affiliation(s)
- Johanna Nokso-Koivisto
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Tasnee Chonmaitree
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Kristofer Jennings
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Reuben Matalon
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Stan Block
- Kentucky Pediatric Research, Inc., Bardstown, Kentucky, United States of America
| | - Janak A. Patel
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, United States of America
- * E-mail:
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Murphy TF, Chonmaitree T, Barenkamp S, Kyd J, Nokso-Koivisto J, Patel JA, Heikkinen T, Yamanaka N, Ogra P, Swords WE, Sih T, Pettigrew MM. Panel 5: Microbiology and immunology panel. Otolaryngol Head Neck Surg 2013; 148:E64-89. [PMID: 23536533 DOI: 10.1177/0194599812459636] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The objective is to perform a comprehensive review of the literature from January 2007 through June 2011 on the virology, bacteriology, and immunology related to otitis media. DATA SOURCES PubMed database of the National Library of Medicine. REVIEW METHODS Three subpanels with co-chairs comprising experts in the virology, bacteriology, and immunology of otitis media were formed. Each of the panels reviewed the literature in their respective fields and wrote draft reviews. The reviews were shared with all panel members, and a second draft was created. The entire panel met at the 10th International Symposium on Recent Advances in Otitis Media in June 2011 and discussed the review and refined the content further. A final draft was created, circulated, and approved by the panel. CONCLUSION Excellent progress has been made in the past 4 years in advancing an understanding of the microbiology and immunology of otitis media. Advances include laboratory-based basic studies, cell-based assays, work in animal models, and clinical studies. IMPLICATIONS FOR PRACTICE The advances of the past 4 years formed the basis of a series of short-term and long-term research goals in an effort to guide the field. Accomplishing these goals will provide opportunities for the development of novel interventions, including new ways to better treat and prevent otitis media.
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Affiliation(s)
- Timothy F Murphy
- Clinical and Translational Research Center, University at Buffalo, State University of New York, Buffalo, New York 14203, USA.
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Jain S, Basraon S, Loeffelholz MJ, Patel JA. The pattern of indeterminate human immunodeficiency virus test and follow-up evaluation in pregnant women. Am J Perinatol 2011; 28:467-72. [PMID: 21136348 DOI: 10.1055/s-0030-1270114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We studied the pattern of indeterminate HIV serological tests among pregnant women with follow-up testing in the postpartum period. Medical records of pregnant women were reviewed over a 2-year period. Of 16,596 pregnant women, 127 (0.8%) had positive HIV enzyme-linked immunoassay (ELISA) result. With Western blot (WB) test, 54 (0.33%) were positive, 43 (0.26%) were negative, and 30 (0.18%) were indeterminate. One of the 30 women (3.3%) with indeterminate WB converted to positive WB during pregnancy. White and black women were more likely to have an unconfirmed positive ELISA (indeterminate or negative WB) than Hispanics ( P = 0.021). The positive WB rate for black women was significantly higher ( P < 0.001) than other racial/ethnic groups. The postpartum follow-up testing of 14 women with indeterminate WB varied between 4 to 20 weeks; 16 did not have any postpartum follow-up test. The common bands in indeterminate WB were P24, P18, and nonviral proteins. The pattern of indeterminate WB result and its follow-up was variable during pregnancy and postpartum period. There is a need for development of national standards of care for indeterminate WB mothers and their infants in the postpartum period. Additional studies are needed to determine the cause of indeterminate tests, reducing their occurrence in the testing process, and the optimum time for testing in the postpartum period.
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Affiliation(s)
- Sangeeta Jain
- Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, USA.
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McCormick DP, Grady JJ, Diego A, Matalon R, Revai K, Patel JA, Han Y, Chonmaitree T. Acute otitis media severity: association with cytokine gene polymorphisms and other risk factors. Int J Pediatr Otorhinolaryngol 2011; 75:708-12. [PMID: 21440944 PMCID: PMC3272162 DOI: 10.1016/j.ijporl.2011.02.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 02/18/2011] [Accepted: 02/25/2011] [Indexed: 11/26/2022]
Abstract
BACKGROUND We have previously shown an association between polymorphisms of proinflammatory cytokine genes and susceptibility to upper respiratory tract infection and acute otitis media. It has not been known whether polymorphisms or risk factors are associated with the severity of acute otitis media. OBJECTIVE To evaluate the influences of proinflammatory cytokine gene polymorphisms and other risk factors on severity of acute otitis media following upper respiratory tract infection. METHODS In a prospective, longitudinal study, children aged 6-35 months were followed for one year for occurrences of upper respiratory tract infection and acute otitis media. Children were studied for TNFα(-308), interleukin (IL)-6(-174) and IL-1β(+3953) polymorphisms, taking into account age, gender, race, family history of otitis, tobacco smoke exposure, breast feeding, day of upper respiratory tract infection at the time of diagnosis and pneumococcal vaccine status. Symptoms and signs of acute otitis media were graded according to a validated scale. The association between acute otitis media clinical severity, polymorphic genotypes, and risk factors were analyzed using statistical models that account for multiple episodes of acute otitis media per child. RESULTS A total of 295 episodes of acute otitis media in 128 subjects was included. More severe acute otitis media symptoms were associated with young age (P=0.01), family history of acute otitis media (P=0.002), tobacco smoke exposure (P=0.008), and early diagnosis of otitis after onset of upper respiratory tract infection (P=0.02). Among children with a bulging or perforated tympanic membrane (206 episodes, 104 subjects), those who had the IL-1 β(+3953) polymorphism, experienced higher symptom scores (P<0.02). CONCLUSION This is the first report of the association between risk factors and acute otitis media severity. Risk factors such as tobacco smoke exposure and a positive family history appear to be more significantly associated with acute otitis media severity than proinflammatory gene polymorphisms. Clinical severity may be an important factor contributing to the incidence and costs of acute otitis media, because children with more severe symptoms might be more likely to be brought for a medical visit, receive a diagnosis of acute otitis media, and be prescribed an antibiotic.
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Affiliation(s)
- David P. McCormick
- Department of Pediatrics The University of Texas Medical Branch at Galveston, Texas
| | - James J. Grady
- Department of Preventive Medicine and Community Health, The University of Texas Medical Branch at Galveston, Texas
| | - Alejandro Diego
- Department of Pediatrics The University of Texas Medical Branch at Galveston, Texas
| | - Reuben Matalon
- Department of Pediatrics The University of Texas Medical Branch at Galveston, Texas, Department of Human Biological Chemistry and Genetics The University of Texas Medical Branch at Galveston, Texas
| | - Krystal Revai
- Department of Pediatrics The University of Texas Medical Branch at Galveston, Texas
| | - Janak A. Patel
- Department of Pediatrics The University of Texas Medical Branch at Galveston, Texas
| | - Yimei Han
- Department of Preventive Medicine and Community Health, The University of Texas Medical Branch at Galveston, Texas
| | - Tasnee Chonmaitree
- Department of Pediatrics The University of Texas Medical Branch at Galveston, Texas, Department of Pathology The University of Texas Medical Branch at Galveston, Texas
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Patel JA, Nair S, Ochoa EE, Huda R, Roberts NJ, Chonmaitree T. Interleukin-6⁻¹⁷⁴ and tumor necrosis factor α⁻³⁰⁸ polymorphisms enhance cytokine production by human macrophages exposed to respiratory viruses. J Interferon Cytokine Res 2010; 30:917-21. [PMID: 20973681 DOI: 10.1089/jir.2010.0033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Interleukin-6⁻¹⁷⁴ (IL-6⁻¹⁷⁴) and tumor necrosis factor α⁻³⁰⁸ (TNFα⁻³⁰⁸) are high-cytokine-producing genotypes that are known to increase the susceptibility to infectious diseases, but their influence on cytokine production induced by respiratory viruses is unknown. We exposed human monocyte-derived macrophages from IL-6⁻¹⁷⁴, TNFα⁻³⁰⁸, and normal genotype donors to different respiratory viruses. Respiratory syncytial virus (RSV) stimulation was associated with higher IL-6 concentrations in IL-6⁻¹⁷⁴ donors than in normal donors (P = 0.015); 2 of 7 (29%) polymorphic donors were poor responders compared with 6 of 7 (86%) normal donors (P = 0.002). Adenovirus, influenza virus, and RSV stimulations were associated with higher TNFα concentrations in TNFα⁻³⁰⁸ donors than in normal donors (P = 0.03, <0.01, <0.01). A similar trend was seen with rhinovirus stimulation, but this was not significant. These results show that IL-6⁻¹⁷⁴ and TNFα⁻³⁰⁸ gene polymorphisms lead to enhanced production of the respective cytokines when exposed to specific respiratory viruses. This, in turn, may influence the susceptibility to, severity of, and recovery from respiratory virus infections, or influence the immune response to and reactogenicity of viral vaccines.
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Affiliation(s)
- Janak A Patel
- Division of Pediatric Infectious Disease and Immunology, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas 77555-0371, USA.
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Kalu SU, Loeffelholz M, Beck E, Patel JA, Revai K, Fan J, Henrickson KJ, Chonmaitree T. Persistence of adenovirus nucleic acids in nasopharyngeal secretions: a diagnostic conundrum. Pediatr Infect Dis J 2010; 29:746-50. [PMID: 20308936 PMCID: PMC3206289 DOI: 10.1097/inf.0b013e3181d743c8] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Polymerase chain reaction (PCR) assays increase the rate of viral detection in clinical specimens, compared with conventional virologic methods. Studies suggest that PCR may detect virus nucleic acid (NA) that persists in the respiratory tract. METHODS We analyzed virologic data from children having frequent upper respiratory infections (URI), who were followed up in a longitudinal study. Nasopharyngeal secretions were collected at URI onset and when acute otitis media was diagnosed; virus studies were performed using conventional diagnostics and PCR. Repeated presence of adenovirus by PCR was further studied by sequencing and phylogenetic analysis. RESULTS Of 581 URI episodes in 76 children, 510 viruses were detected. Of the viruses detected by PCR, 15% were those detected previously; repeated positives occurred most frequently with adenovirus. Sequencing results were available in 13 children with repeated adenovirus detection; the following 4 patterns of infection were identified (16 instances): (1) adenovirus of the same serotype and strain detected continuously (n = 8 instances), (2) adenovirus of different serotypes detected during sequential URI episodes (n = 3), (3) adenovirus of the same serotype but different strains detected during sequential URI episodes (n = 3), and (4) adenovirus of the same serotype and strain detected intermittently (n = 2). CONCLUSIONS Among children with frequent URIs, repeated positive PCR results for adenovirus NA may represent a new serotype/strain, or persistence of viral NA. Results must be interpreted with caution; clinical correlation and presence of other viruses are important. Further longitudinal studies of children during and after infection are required for better understanding of the clinical significance of positive PCR tests for adenovirus NA in the respiratory tract.
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Affiliation(s)
- Stella U. Kalu
- Department of Pediatrics, University of Texas, Medical Branch at Galveston, Galveston, TX
| | - Michael Loeffelholz
- Department of Pathology, University of Texas, Medical Branch at Galveston, Galveston, TX
| | - Eric Beck
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI
| | - Janak A. Patel
- Department of Pediatrics, University of Texas, Medical Branch at Galveston, Galveston, TX
| | - Krystal Revai
- Department of Pediatrics, University of Texas, Medical Branch at Galveston, Galveston, TX
| | - Jiang Fan
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI
| | | | - Tasnee Chonmaitree
- Department of Pediatrics, University of Texas, Medical Branch at Galveston, Galveston, TX
- Department of Pathology, University of Texas, Medical Branch at Galveston, Galveston, TX
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Abstract
BACKGROUND The role of acute phase cytokines generated in the nasopharynx during viral upper respiratory infection (URI) in subsequent development of acute otitis media (AOM) has not been examined. METHODS We studied 326 virus-positive URI episodes in 151 children aged 6-36 months. Nasopharyngeal secretions collected within 1 to 7 days of URI onset were studied for viruses by conventional and molecular techniques, and for concentrations of IL-1beta, IL-6, and TNFalpha by multiplex enzyme-linked immunosorbent assay. Children were followed up for 28 days to document AOM complication. RESULTS IL-1beta, IL-6, and TNFalpha concentrations correlated positively with each other (P<0.001). IL-6 and TNFalpha concentrations were higher in males than in females (P=0.01 and 0.02). IL-6 and TNFalpha concentrations were inversely correlated with age (P=0.02 and 0.05). IL-6 concentrations correlated positively with duration of fever (P=0.006) and correlated negatively with the number of days of URI symptoms (P=0.026). Furthermore, IL-6 concentrations were significantly higher during adenovirus and influenza virus URIs as compared with enterovirus and rhinovirus URIs (P<0.01). IL-1beta concentrations were higher during URI episodes with AOM than those without AOM (P<0.001). CONCLUSIONS We found IL-6 nasopharyngeal secretions concentrations to be higher with adenovirus and influenza infection, and in children with systemic febrile response during URI. However, IL-1beta was found to play a more important role in the development of AOM after URI. Additional studies are needed to further define the role of acute phase cytokines in virus-induced AOM.
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Affiliation(s)
- Janak A. Patel
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
| | - Sangeeta Nair
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
| | - Krystal Revai
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
| | - James Grady
- Department of Preventive Medicine and Community Health, University of Texas Medical Branch, Galveston, Texas
| | - Tasnee Chonmaitree
- Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas
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Patel JA, Anderson E, Dong J. False Positive Ultrasensitive HIV bDNA Viral Load Results in Diagnosis of Perinatal HIV-Infection in the Era of Low Transmission. Lab Med 2009. [DOI: 10.1309/lmaotfwvlh1b5a5k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Revai K, Patel JA, Grady JJ, Nair S, Matalon R, Chonmaitree T. Association between cytokine gene polymorphisms and risk for upper respiratory tract infection and acute otitis media. Clin Infect Dis 2009; 49:257-61. [PMID: 19522649 DOI: 10.1086/599833] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND We previously reported an association between tumor necrosis factor alpha (TNFalpha)(-308)and interleukin (IL)-6(-174) polymorphisms and otitis susceptibility by history. Acute otitis media occurs most commonly as a complication of upper respiratory tract infection (URI); it is not clear why some children develop acute otitis media after URI and others do not. Our objective was to prospectively evaluate the association of TNFalpha(-308)and IL-6(-174) polymorphisms with URI and with acute otitis media development after URI. METHODS Children aged 6-35 months were prospectively followed for occurrences of URI and acute otitis media. Blood or buccal mucosa samples were collected for DNA extraction to determine cytokine genotypes. Active and passive surveillance was used to capture all URI episodes during the 1-year follow-up period in order to study the rate of acute otitis media following URI. Data were analyzed using SAS software (SAS Institute) and general estimating equations modeling. RESULTS Two hundred forty-two children were followed over 2689 patient-months and had DNA genotyped; 1235 URI episodes occurred, and 392 (32%) were complicated by acute otitis media. Children who had IL-6(-174) polymorphism had a higher susceptibility to URI during the study period (incidence density ratio, 1.24) and were more likely to meet established otitis susceptibility criteria (P < .01). Presence of TNFalpha(-308) polymorphism was associated with increased risk for acute otitis media after an episode of URI (odds ratio, 1.43). CONCLUSIONS TNFalpha(-308) and IL-6(-174) genotypes are associated with increased risk for symptomatic URI and acute otitis media following URI. Future studies may be designed to carefully look at the interaction of these genetic polymorphisms with modifiable environmental risk factors.
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Affiliation(s)
- Krystal Revai
- Department of Pediatrics, University of Texas Medical Branch at Galveston, Texas, USA.
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Abstract
Competitive interactions between bacteria differ by number and species present; thus, vaccination and treatment strategies may alter nasopharyngeal flora and disease susceptibility. Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, and Staphylococcus aureus often colonize the nasopharynx. Children are susceptible to bacterial infections during or soon after upper respiratory tract infection (URI). We describe colonization with these 4 bacteria species alone or in combination during URI. Data were from a prospective cohort of healthy children 6 to 36 months of age followed up for 1 year. Analyses of 968 swabs from 212 children indicated that S. pneumoniae colonization is negatively associated with colonization by H. influenzae. Competitive interactions shifted when H. influenzae and M. catarrhalis colonized together. In this situation, the likelihood of colonization with all 3 species is higher. Negative associations were identified between S. pneumoniae and S. aureus and between H. influenzae and S. aureus. Polymicrobial interactions differed by number and species of bacteria present. Antimicrobial therapy and vaccination strategies targeting specific bacterial species may alter the flora in unforeseen ways.
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Chonmaitree T, Revai K, Grady JJ, Clos A, Patel JA, Nair S, Fan J, Henrickson KJ. Viral upper respiratory tract infection and otitis media complication in young children. Clin Infect Dis 2008; 46:815-23. [PMID: 18279042 PMCID: PMC2744371 DOI: 10.1086/528685] [Citation(s) in RCA: 260] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2007] [Accepted: 10/13/2007] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND The common cold or upper respiratory infection (URI) is highly prevalent among young children and often results in otitis media (OM). The incidence and characteristics of OM complicating URI due to specific viruses have not been well studied. METHODS We performed a prospective, longitudinal cohort study of 294 healthy children (age range, 6 months to 3 years). Each child was observed for 1 year to assess the occurrence of URI, acute OM (AOM), and OM with effusion (OME) complicating URI due to specific viruses. RESULTS We documented 1295 URI episodes (5.06 episodes per child-year) and 440 AOM episodes (1.72 episodes per child-year). Virus studies were performed for 864 URI episodes; 63% were virus positive. Rhinovirus and adenovirus were most frequently detected during URI. The overall incidence of OM that complicated URI was 61%, including a 37% incidence of AOM and a 24% incidence of OME. Young age was the most important predictor of AOM that complicated URI. AOM occurred in approximately one-half of children with URI due to adenovirus, respiratory syncytial virus, or coronavirus and in approximately one-third of those with URI due to influenza virus, parainfluenza virus, enterovirus, or rhinovirus. CONCLUSIONS More than 60% of episodes of symptomatic URI among young children were complicated by AOM and/or OME. Young age and specific virus types were predictors of URI complicated by AOM. For young children, the strategy to prevent OM should involve prevention of viral URI. The strategy may be more effective if the priority is given to development of means to prevent URI associated with adenovirus and respiratory syncytial virus.
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Affiliation(s)
- Tasnee Chonmaitree
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX 77555-0371, USA.
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Revai K, Dobbs LA, Nair S, Patel JA, Grady JJ, Chonmaitree T. Incidence of acute otitis media and sinusitis complicating upper respiratory tract infection: the effect of age. Pediatrics 2007; 119:e1408-12. [PMID: 17545367 DOI: 10.1542/peds.2006-2881] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Infants and young children are prone to developing upper respiratory tract infections, which often result in bacterial complications such as acute otitis media and sinusitis. We evaluated 623 upper respiratory tract infection episodes in 112 children (6-35 months of age) to determine the proportion of upper respiratory tract infection episodes that result in acute otitis media or sinusitis. Of all upper respiratory tract infections, 30% were complicated by acute otitis media and 8% were complicated by sinusitis. The rate of acute otitis media after upper respiratory tract infection declined with increasing age, whereas the rate of sinusitis after upper respiratory tract infection peaked in the second year of life. Risk for acute otitis media may be reduced substantially by avoiding frequent exposure to respiratory viruses (eg, avoidance of day care attendance) in the first year of life.
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Affiliation(s)
- Krystal Revai
- Department of Pediatrics, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555-0371, USA
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Patel JA, Nguyen DT, Revai K, Chonmaitree T. Role of respiratory syncytial virus in acute otitis media: implications for vaccine development. Vaccine 2007; 25:1683-9. [PMID: 17156899 PMCID: PMC1828634 DOI: 10.1016/j.vaccine.2006.10.045] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2006] [Revised: 10/12/2006] [Accepted: 10/20/2006] [Indexed: 11/18/2022]
Abstract
We summarize herein the results of various virologic studies of acute otitis media (AOM) conducted at our site over a 10-year period. Among 566 children with AOM, respiratory syncytial virus (RSV) was the most common virus identified in either middle ear fluid or nasal wash; it was found in 16% of all children and 38% of virus-positive children. Seventy-one percent of the children with RSV were 1 year of age or older, which was significantly older than all other viruses combined (P=0.045). RSV infection was associated with the common bacterial pathogens causing AOM. Past efforts to develop vaccines for RSV have emphasized prevention of lower respiratory tract infection in infants, which is a more serious problem but less common than AOM. Our results suggest that RSV vaccines that work only against infection in older children may have value in preventing AOM, the most common pediatric disease.
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Affiliation(s)
- Janak A Patel
- Departments of Pediatrics, University of Texas Medical Branch, Galveston, TX 77555-0371, United States.
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Patel JA, Nair S, Revai K, Grady J, Saeed K, Matalon R, Block S, Chonmaitree T. Association of proinflammatory cytokine gene polymorphisms with susceptibility to otitis media. Pediatrics 2006; 118:2273-9. [PMID: 17142509 DOI: 10.1542/peds.2006-0764] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE Susceptibility to otitis media results from complex interactions among genetic factors of the host, exposure to pathogens, and environmental influences. The objective of this study was to study the role of single-nucleotide polymorphisms of regulatory elements of proinflammatory cytokine genes tumor necrosis factor-alpha(-308), interleukin-1beta(+3953), and interleukin-6(-174), in susceptibility to recurrent otitis media in childhood. METHODS A total of 505 children (296 otitis media susceptible, 209 nonsusceptible as control) were enrolled at 2 sites (Texas and Kentucky). DNA of the children was studied for specific single-nucleotide polymorphisms by restriction fragment length polymorphism assay and confirmed by gene sequencing. RESULTS In the overall study group, tumor necrosis factor-alpha(-308) and interleukin-6(-174) heterozygous or homozygous polymorphisms (high cytokine-producing genotypes) were significantly associated with otitis media susceptibility. The same association was found in a match-paired subgroup of 384 subjects. In the overall study group, there was a significant step-wise increase in otitis media susceptibility with increasing number of concomitant polymorphic genotypes. Simultaneous combination of tumor necrosis factor-alpha(-308) and interleukin-6(-174) polymorphisms further increased the risk for otitis media susceptibility. These 2 polymorphic genotypes also were associated with the increased risk for tympanostomy tube placement. Children who had tumor necrosis factor-alpha(-308) polymorphism and were breastfed for <1 month or exposed to cigarette smoke were more likely to be otitis media susceptible. CONCLUSIONS Our data suggest that tumor necrosis factor-alpha(-308) and interleukin-6(-174) polymorphisms are associated with increased risk for otitis media susceptibility and placement of tympanostomy tubes. Environmental factors such as breastfeeding may modify the risk for otitis media susceptibility in polymorphic individuals.
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Affiliation(s)
- Janak A Patel
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX 77555-0371, USA
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Abstract
A case of acute, invasive, sinusitis caused by the dematiaceous mold Exserohilum rostratum is presented. Herein we examine the subtypes of fungal sinusitis and briefly discuss some characteristics, pathologic and microbiologic differential diagnoses and management strategies of Exserohilum sinus infection in an immunocompromised patient.
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Affiliation(s)
- P Rocco Lasala
- Department of Pathology and the Division of Hematology and Oncology, University of Texas Medical Branch, Galveston, USA
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Barenkamp SJ, Kurono Y, Ogra PL, Leiberman A, Bakaletz LO, Murphy TF, Chonmaitree T, Patel JA, Heikkinen T, Sih TM, Hurst DS, St Geme JW, Kawauchi H, Stenfors LE. Recent advances in otitis media. 5. Microbiology and immunology. Ann Otol Rhinol Laryngol Suppl 2005; 194:60-85. [PMID: 15700937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Affiliation(s)
- Stephen J Barenkamp
- Department of Pediatrics, St Louis University School of Medicine, Missouri, USA
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Giebink GS, Kurono Y, Bakaletz LO, Kyd JM, Barenkamp SJ, Murphy TF, Green B, Ogra PL, Gu XX, Patel JA, Heikkinen T, Pelton SI, Hotomi M, Karma P. Recent advances in otitis media. 6. Vaccine. Ann Otol Rhinol Laryngol Suppl 2005; 194:86-103. [PMID: 15700938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Affiliation(s)
- G Scott Giebink
- Department of Pediatrics, University of Minnesota Medical School, Minneapolis, USA
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Piper GL, Patel NA, Patel JA, Malay MB, Julian TB. Neoadjuvant chemotherapy for locally advanced breast cancer results in alterations in preoperative tumor marker status. Am Surg 2004; 70:1103-6. [PMID: 15663054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Neoadjuvant therapy followed by breast-conserving surgery has become an acceptable option for patients with locally advanced breast cancer. Although a distinct survival benefit has not been demonstrated using this approach, several questions have been raised following such therapy including its effects on receptor status and tumor markers. The current study retrospectively reviews estrogen receptor (ER), progesterone receptor (PR), and HER2-neu status in 55 consecutive patients treated by neoadjuvant chemotherapy. Preoperative and postoperative tumor markers were available for 43 of the 55 patients (78%). The pathologic complete tumor response rate (pCR) for this group was 19 per cent (8/43). Of those patients who did not achieve a pCR (n = 35), a change in tumor markers was seen in 25.7 per cent (9/35) of patients. When compared to a control group not undergoing neoadjuvant therapy, a significantly higher percent change in marker expression was noted in the neoadjuvant group (25.7% vs 5.9%, P = 0.046). ER, PR, and HER2-neu status remain important prognostic indicators for breast cancer. Tumor markers are useful in planning adjuvant therapy regimens. In this review, nearly 19 per cent of patients achieved a pCR. In patients not achieving a pCR, one in four patients had at least one change in tumor marker status. This study demonstrates the importance of establishing receptor and marker status prior to neoadjuvant therapy, as many patients will achieve a pCR and make tumor analysis impossible. Postoperative marker studies should be performed given the possibility of a change in status. The clinical relevance of this data will require further long-term follow-up. Until such data becomes available, caution should be considered when basing adjuvant therapy regimens on preoperative tumor marker studies alone.
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Affiliation(s)
- G L Piper
- Departments of Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania 15212, USA
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Patel NA, Piper G, Patel JA, Malay MB, Julian TB. Accurate axillary nodal staging can be achieved after neoadjuvant therapy for locally advanced breast cancer. Am Surg 2004; 70:696-9; discussion 699-700. [PMID: 15328803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Lymph node status remains the most important prognostic indicator for breast cancer. Recent reports have established that the accuracy of assessing lymph node status is proportional to the number of nodes dissected. The accuracy of axillary staging following neoadjuvant chemotherapy has been cited as a technical concern due to limited node retrieval. The current study attempts to evaluate the ability to perform sentinel node biopsy (SNB) and formal axillary node dissection (AND) following neoadjuvant chemotherapy and to compare these results with non-neoadjuvant patients. One hundred sixteen consecutive patients undergoing SNB with simultaneous AND were retrospectively reviewed. Forty-two of these patients were treated with neoadjuvant chemotherapy prior to AND. Overall success rate in performing SNB in the neoadjuvant group was 95 per cent, and no false negatives have been noted to date. The overall SNB success rate in the non-neoadjuvant group was also 95 per cent with a false negative rate of 3 per cent. After AND in each group, a mean of 21 nodes were retrieved in the neoadjuvant group and 17.9 nodes in the non-neoadjuvant group (P = 0.018). In the neoadjuvant group, there were 19 node positive patients (42%) and 21 patients (28%) in the non-neoadjuvant group (P = 0.16). The mean number of positive nodes per patient was also similar between the two groups (2.9 in the neoadjuvant group vs 1.67 in the non-neoadjuvant group, P = 0.10). Following neoadjuvant therapy, accurate evaluation of the axilla is feasible. In this study, the mean number of nodes is significantly different in favor of the neoadjuvant group, but there is no significant difference in the number of node positive patients identified or in the mean number of positive nodes identified per patient. SNB is technically feasible with accuracy similar to that seen in patients with no history of neoadjuvant therapy. Neoadjuvant chemotherapy extends the use of breast-conserving therapy without sacrificing the ability to accurately stage the axilla either by use of standard axillary dissection or SNB.
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Affiliation(s)
- N A Patel
- Department of Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania 15212, USA
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Mason NA, Neudeck BL, Welage LS, Patel JA, Swartz RD. Comparison of 3 vancomycin dosage regimens during hemodialysis with cellulose triacetate dialyzers: post-dialysis versus intradialytic administration. Clin Nephrol 2003; 60:96-104. [PMID: 12940611 DOI: 10.5414/cnp60096] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
AIMS Traditionally, vancomycin is administered following dialysis to minimize drug loss when high-flux membranes are employed. Unfortunately, this approach is extremely inconvenient for patients and staff, requiring the patients to remain in the unit for at least 1 hour following dialysis. This study was designed to evaluate the feasibility of administering vancomycin during hemodialysis. Specifically, this study was designed to compare the pharmacokinetics of vancomycin when administered during the last 1-2 hours of dialysis (i.e. intra-dialytic administration) to that administered after completion of dialysis. MATERIALS AND METHODS In a randomized, 3-way crossover trial, the pharmacokinetics of vancomycin were evaluated in 9 hemodialysis patients, comparing vancomycin 15 mg/kg following dialysis (Phase I), vancomycin 15 mg/kg during the last hour of hemodialysis (Phase II) or vancomycin 30 mg/kg during the last 2 hours of hemodialysis (Phase III). Vancomycin plasma concentrations were obtained over an 8-day period and subsequent comparisons between the treatment approaches were made with paired t-tests or ANOVA, as appropriate. Dialysate vancomycin concentrations determined on Day 1 and Day 3 of Phases II and III were used to calculate the fraction of vancomycin dose removed, and were compared to plasma data using paired t-tests. RESULTS Vancomycin was significantly removed (33.4 to 39.5%) during a 3- to 4-hour high-flux dialysis session occurring on Day 3 after vancomycin administration. Mean serum concentrations immediately following intradialytic vancomycin administration of 15 mg/kg over the last hour of dialysis or 30 mg/kg over the last 2 hours of dialysis were initially high (77.7 and 95.5 mcg/ml respectively), but fell to 25.9 and 40.5 mcg/ml, respectively, by 4 hours post-dialysis. Predialysis concentrations on Days 3, 5 and 8 were similar for vancomycin 30 mg/kg administered over the last 2 hours of dialysis as compared with a 15 mg/kg dose given after dialysis. Vancomycin 15 mg/kg over the last hour of dialysis resulted in significantly lower subsequent predialysis concentrations than the other dosing schemes. CONCLUSIONS Vancomycin administration of 30 mg/kg over the last 2 hours of dialysis achieves serum concentrations similar to conventional dosing of 15 mg/kg after dialysis and would allow dosing on a weekly basis.
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Affiliation(s)
- N A Mason
- College of Pharmacy, The University of Michigan, Ann Arbor, MI 48109-1065, USA.
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Bakaletz LO, Barenkamp SJ, Eskola J, Green B, Gu XX, Harada T, Heikkinen T, Karma P, Klein JO, Kurono Y, Mogi G, Murphy TF, Ogra PL, Patel JA, Suzuki M, Yamanaka N. Recent advances in otitis media. 7. Vaccine. Ann Otol Rhinol Laryngol Suppl 2002; 188:82-94. [PMID: 11968864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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DeMaria TF, Bakaletz LO, Chonmaitree T, Heikkinen T, Hurst DS, Kawauchi H, Kurono Y, Patel JA, Sih TM, Stenfors LE, Suzuki M. Recent advances in otitis media. 6. Microbiology and immunology. Ann Otol Rhinol Laryngol Suppl 2002; 188:62-81. [PMID: 11968862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Abstract
HIV infection has emerged as a colossal problem with epidemic proportions. According to an estimate from UNAIDS about 36.1 million people all over the world are infected at present. In India about 3.5 million people are infected. The infection has evolved into phase II process of disease evolution, spreading from high-risk population to the general population. The antenatal HIV seropositivity has shown a steady increase from 0.1% to 2% in some tertiary care hospitals in Mumbai. Pediatric HIV infection presents with diverse clinical manifestations. In developing countries like India, diagnosis of infection during first year of life in perinatally exposed infants poses a problem due to lack of easy accessibility and increased cost of diagnostic facilities like HIV-PCR, CD4/CD8 counts and viral cultures. Moreover, lack of adequate drugs and exorbitant cost of sustaining antiretroviral therapy complicates the management issues. An assortment of antiretovirals is available in USA and other developed countries. In India drugs like zidovudine, lamivudine, stavudine, nevirapine and indinavir are available and are used in symptomatic patients. CDC has defined definite treatment guidelines for pediatric population recently. These guidelines need to be modified in our set up. At the present juncture in India the emphasis remains on the prevention and treatment of opportunistic infections like tuberculosis and pneumocystis carinii and on prevention of perinatal transmission with zidovudine. This brief review deals with various clinical manifestations as relevant in a developing country like India and recent advances in antiretroviral therapy.
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Affiliation(s)
- D Kaul
- Department of Pediatrics, Sir Ganga Ram Hospital, New Delhi-110060, India
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Patel NA, Patel JA, Stins MF, Kim KS, Chang SL. Dexamethasone affects cytokine-mediated adhesion of HL-60 human promyelocytic leukemia cells to cultured dermal microvascular endothelial cells. Clin Immunol 2001; 99:387-94. [PMID: 11358436 DOI: 10.1006/clim.2001.5029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Leukocyte endothelial adhesion (LEA) is the prelude to a complex cascade of reactions following an immunological challenge. Recently, LEA has been implicated in the molecular basis of several dermatological disorders. While the role of proinflammatory cytokines, such as interleukin-1 beta (IL-1beta) and tumor necrosis factor-alpha (TNF-alpha), in LEA has been investigated using nondermal models, limited data exist regarding their effects on LEA in dermal models. This study shows that cotreatment of cultured human dermal endothelial cells (CADMEC) with IL-1beta and TNF-alpha resulted in a marked increase in the adherence of human promyelocytic leukemia (HL-60) cells to CADMEC and an increase in expression of intercellular adhesion molecule-1 and E-selectin. Pretreatment of CADMEC with dexamethasone, a long-lasting glucocorticoid, resulted in a decrease in both HL-60 cell adhesion to CADMEC and adhesion molecule expression. Taken together, these data demonstrate that LEA may play a role in inflammatory skin conditions and in the mechanisms underlying the potential use of glucocorticoids as a treatment option.
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Affiliation(s)
- N A Patel
- Department of Biology, Seton Hall University, South Orange, New Jersey 07079, USA
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Arbona SI, Melville SK, Hanson IC, Squires JE, Doyle M, Doran TI, Patel JA, Handal GA, Hauger SB, Murphey DK, Dominguez K. Mother-to-child transmission of the human immunodeficiency virus in Texas. Pediatr Infect Dis J 2001; 20:602-6. [PMID: 11419503 DOI: 10.1097/00006454-200106000-00011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The Pediatric Spectrum of HIV Diseases (PSD) project has been collecting data on HIV-exposed children in Texas since 1989. These data have now been analyzed to describe mother-to-child transmission in Texas and to provide much needed information on the magnitude of the pediatric HIV epidemic in the state. METHODS We examined trends in the numbers of perinatally exposed children and perinatally acquired cases of HIV in the Texas PSD cohort. We calculated transmission rates and relative risks for 656 children born from January, 1995, to July, 1998, that received all or part of the ACTG 076 regimen. RESULTS Only a small proportion (38%) of pairs of an HIV-infected mother and her HIV-exposed child received the full AIDS Clinical Trial Group 076 (ACTG 076) regimen; only 73% of the mothers received at least some prenatal care. In recent years, however, the numbers of perinatally exposed children and perinatally acquired cases of HIV have decreased in Texas. Univariate analyses showed that a reduction in the vertical transmission of HIV was associated with receipt of a full ACTG 076 regimen, receipt of a partial ACTG 076 regimen and residence in Dallas County. CONCLUSIONS Findings identify a gap in meeting the health care needs of pregnant HIV-infected women and suggest missed opportunities to prevent mother-to-child transmission of HIV. At the same time this study confirms progress in prevention efforts to reduce mother-to-child transmission of HIV in Texas.
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Affiliation(s)
- S I Arbona
- Bureau of HIV and STD Prevention, Texas Department of Health, Austin 78756-3199, USA.
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