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Sengkeopraseuth B, Co KC, Leuangvilay P, Mott JA, Khomgsamphanh B, Somoulay V, Tsuyuoka R, Chiew M, Ketmayoon P, Jones J, Pusch E, Jang Y, Barnes J, Davis CT, Phommachanh P, Khamphaphongphane B, Olsen SJ, Xangsayyarath P. First human infection of avian influenza A(H5N6) virus reported in Lao People's Democratic Republic, February-March 2021. Influenza Other Respir Viruses 2021; 16:181-185. [PMID: 34761535 PMCID: PMC8818831 DOI: 10.1111/irv.12934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/19/2021] [Accepted: 10/24/2021] [Indexed: 12/03/2022] Open
Abstract
In March 2021, Lao People's Democratic Republic (Laos) reported an avian influenza A(H5N6) virus infection in a 5‐year‐old child identified through sentinel surveillance. This was the first human A(H5N6) infection reported outside of China. A multidisciplinary investigation undertook contact tracing and enhanced human and animal surveillance in surrounding villages and live bird markets. Seven Muscovy ducks tested positive for highly pathogenic avian influenza A(H5N6) viruses. Sequenced viruses belonged to clade 2.3.4.4h and were closely related to viruses detected in poultry in Vietnam and to previous viruses detected in Laos. Surveillance and coordinated outbreak response remain essential to global health security.
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Affiliation(s)
- Bounthanom Sengkeopraseuth
- National Center for Laboratory and Epidemiology, Department of Communicable Disease Control, Ministry of Health, Vientiane, Lao PDR
| | | | | | - Joshua A Mott
- U. S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Virasack Somoulay
- National Center for Laboratory and Epidemiology, Department of Communicable Disease Control, Ministry of Health, Vientiane, Lao PDR
| | | | - May Chiew
- World Health Organization, Vientiane, Lao PDR
| | | | - Joyce Jones
- U. S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Elizabeth Pusch
- U. S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Yunho Jang
- U. S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - John Barnes
- U. S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Phouvong Phommachanh
- National Animal Health Laboratory, Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Lao PDR
| | - Bouaphanh Khamphaphongphane
- National Center for Laboratory and Epidemiology, Department of Communicable Disease Control, Ministry of Health, Vientiane, Lao PDR
| | - Sonja J Olsen
- U. S. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Phonepadith Xangsayyarath
- National Center for Laboratory and Epidemiology, Department of Communicable Disease Control, Ministry of Health, Vientiane, Lao PDR
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Eldefrawy F, Xu HS, Pusch E, Karkoura A, Alsafy M, Elgendy S, Williams SM, Navara K, Guo TL. Modulation of folliculogenesis in adult laying chickens by bisphenol A and bisphenol S: Perspectives on ovarian morphology and gene expression. Reprod Toxicol 2021; 103:181-190. [PMID: 34147626 DOI: 10.1016/j.reprotox.2021.06.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 01/18/2021] [Revised: 05/25/2021] [Accepted: 06/15/2021] [Indexed: 10/21/2022]
Abstract
Both bisphenol A (BPA) and its analog bisphenol S (BPS) are industrial chemicals that have been used to make certain plastic products applied in chicken farms, including food and water containers. They are endocrine disrupting chemicals (EDCs) with xenoestrogenic activities and affect reproductive success in many ways. It was hypothesized that BPA and BPS could adversely affect the folliculogenesis in chickens due to their disruption of the estrogen responses, using either genomic or non-genomic mechanisms. This study investigated the deleterious effects of BPA and BPS on the ovaries when adult layer chickens were orally treated with these EDCs at 50 μg/kg body weight, the reference dose for chronic oral exposure of BPA established by the U.S. EPA. The chickens in both BPA and BPS-treated groups showed a decreased number of the preovulatory follicles. BPA-treated chickens showed a significant decrease in the diameter of F1. Additionally, both BPA and BPS treatments increased the infiltrations of lymphocytes and plasma cells in ovaries. Moreover, it was found that the ovaries of BPS-treated chickens weighed the most among the groups. RNA sequencing and subsequent pathway enrichment analysis of differentially expressed genes revealed that both BPA- and BPS-treatment groups showed significant changes in gene expression and pathways related to reproduction, immune function and carcinogenesis. Taken together, both BPA and BPS are potentially carcinogenic and have deleterious effects on the fertility of laying chickens by inducing inflammation, suggesting that BPS may not be a safe replacement for BPA.
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Affiliation(s)
- Fatma Eldefrawy
- Department of Anatomy and Embryology, College of Veterinary Medicine, Alexandria University, Egypt; Department of Veterinary Biomedical Sciences, University of Georgia, Athens, GA, United States
| | - Hannah Shibo Xu
- Department of Veterinary Biomedical Sciences, University of Georgia, Athens, GA, United States
| | - Elizabeth Pusch
- Department of Poultry Science, College of Agricultural and Environmental Sciences, University of Georgia, Athens, GA, United States
| | - Ashraf Karkoura
- Department of Anatomy and Embryology, College of Veterinary Medicine, Alexandria University, Egypt
| | - Mohamed Alsafy
- Department of Anatomy and Embryology, College of Veterinary Medicine, Alexandria University, Egypt
| | - Samir Elgendy
- Department of Anatomy and Embryology, College of Veterinary Medicine, Alexandria University, Egypt
| | - Susan M Williams
- Department of Population Health, Poultry Diagnostic and Research Center, University of Georgia, Athens, GA, United States
| | - Kristen Navara
- Department of Poultry Science, College of Agricultural and Environmental Sciences, University of Georgia, Athens, GA, United States
| | - Tai L Guo
- Department of Veterinary Biomedical Sciences, University of Georgia, Athens, GA, United States.
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Oehler R, Pusch E, Zellner M, Dungel P, Hergovics N, Homoncik M, Eliasen MM, Brabec M, Roth E. Cell type-specific variations in the induction of hsp70 in human leukocytes by feverlike whole body hyperthermia. Cell Stress Chaperones 2001; 6:306-15. [PMID: 11795467 PMCID: PMC434413 DOI: 10.1379/1466-1268(2001)006<0306:ctsvit>2.0.co;2] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2000] [Revised: 03/20/2001] [Accepted: 03/22/2001] [Indexed: 11/24/2022] Open
Abstract
Fever has been associated with shortened duration and improved survival in infectious disease. The mechanism of this beneficial response is still poorly understood. The heat-inducible 70-kDa heat shock protein (Hsp70) has been associated with protection of leukocytes against the cytotoxicity of inflammatory mediators and with improved survival of severe infections. This study characterizes the induction of Hsp70 by feverlike temperatures in human leukocytes in vitro and in vivo. Using flow cytometry, Hsp70 expression was determined in whole blood samples. This approach eliminated cell isolation procedures that would greatly affect the results. Heat treatment of whole blood in vitro for 2 hours at different temperatures revealed that Hsp70 expression depends on temperature and cell type; up to 41 degrees C, Hsp70 increased only slightly in lymphocytes and polymorphonuclear leukocytes. However, in monocytes a strong induction was already seen at 39 degrees C, and Hsp70 levels at 41 degrees C were 10-fold higher than in the 37 degrees C control. To be as close as possible to the physiological situation during fever, we immersed healthy volunteers in a hot water bath, inducing whole body hyperthermia (39 degrees C), and measured leukocyte Hsp70 expression. Hsp70 was induced in all leukocytes with comparable but less pronounced cell type-specific variations as observed in vitro. Thus, a systemic increase of body temperature as triggered by fever stimulates Hsp70 expression in peripheral leukocytes, especially in monocytes. This fever-induced Hsp70 expression may protect monocytes when confronted with cytotoxic inflammatory mediators, thereby improving the course of the disease.
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Affiliation(s)
- R Oehler
- Surgical Research Laboratories, University of Vienna, Austria.
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