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Zendt M, Bustos Carrillo FA, Kelly S, Saturday T, DeGrange M, Ginigeme A, Wu L, Callier V, Ortega-Villa A, Faust M, Chang-Rabley E, Bugal K, Kenney H, Khil P, Youn JH, Osei G, Regmi P, Anderson V, Bosticardo M, Daub J, DiMaggio T, Kreuzburg S, Pala F, Pfister J, Treat J, Ulrick J, Karkanitsa M, Kalish H, Kuhns DB, Priel DL, Fink DL, Tsang JS, Sparks R, Uzel G, Waldman MA, Zerbe CS, Delmonte OM, Bergerson JRE, Das S, Freeman AF, Lionakis MS, Sadtler K, van Doremalen N, Munster V, Notarangelo LD, Holland SM, Ricotta EE. Characterization of the antispike IgG immune response to COVID-19 vaccines in people with a wide variety of immunodeficiencies. Sci Adv 2023; 9:eadh3150. [PMID: 37824621 PMCID: PMC10569702 DOI: 10.1126/sciadv.adh3150] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 09/07/2023] [Indexed: 10/14/2023]
Abstract
Research on coronavirus disease 2019 vaccination in immune-deficient/disordered people (IDP) has focused on cancer and organ transplantation populations. In a prospective cohort of 195 IDP and 35 healthy volunteers (HV), antispike immunoglobulin G (IgG) was detected in 88% of IDP after dose 2, increasing to 93% by 6 months after dose 3. Despite high seroconversion, median IgG levels for IDP never surpassed one-third that of HV. IgG binding to Omicron BA.1 was lowest among variants. Angiotensin-converting enzyme 2 pseudo-neutralization only modestly correlated with antispike IgG concentration. IgG levels were not significantly altered by receipt of different messenger RNA-based vaccines, immunomodulating treatments, and prior severe acute respiratory syndrome coronavirus 2 infections. While our data show that three doses of coronavirus disease 2019 vaccinations induce antispike IgG in most IDP, additional doses are needed to increase protection. Because of the notably reduced IgG response to Omicron BA.1, the efficacy of additional vaccinations, including bivalent vaccines, should be studied in this population.
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Affiliation(s)
- Mackenzie Zendt
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Fausto A. Bustos Carrillo
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
- Office of Data Science and Emerging Technologies, Office of Science Management and Operations, NIAID, NIH, Rockville, MD, USA
| | - Sophie Kelly
- Trans-NIH Shared Resource on Biomedical Engineering and Physical Science, National Institute of Biomedical Imaging and Bioengineering (NIBIB), NIH, Bethesda, MD, USA
| | | | - Maureen DeGrange
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
- Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Anita Ginigeme
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
- Medical Science and Computing LLC, Rockville, MD, USA
| | - Lurline Wu
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Viviane Callier
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Ana Ortega-Villa
- Biostatistics Research Branch, Division of Clinical Research, NIAID, NIH, Rockville, MD, USA
| | | | - Emma Chang-Rabley
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Kara Bugal
- Division of Laboratory Medicine, NIH Clinical Center, Bethesda, MD,USA
| | - Heather Kenney
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Pavel Khil
- Division of Laboratory Medicine, NIH Clinical Center, Bethesda, MD,USA
| | - Jung-Ho Youn
- Division of Laboratory Medicine, NIH Clinical Center, Bethesda, MD,USA
| | - Gloria Osei
- Division of Laboratory Medicine, NIH Clinical Center, Bethesda, MD,USA
| | - Pravesh Regmi
- Division of Laboratory Medicine, NIH Clinical Center, Bethesda, MD,USA
| | - Victoria Anderson
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Marita Bosticardo
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Janine Daub
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Thomas DiMaggio
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Samantha Kreuzburg
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Francesca Pala
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Justina Pfister
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Jennifer Treat
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Jean Ulrick
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | | | - Heather Kalish
- Trans-NIH Shared Resource on Biomedical Engineering and Physical Science, National Institute of Biomedical Imaging and Bioengineering (NIBIB), NIH, Bethesda, MD, USA
| | - Douglas B. Kuhns
- Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Debra L. Priel
- Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Danielle L. Fink
- Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - John S. Tsang
- Department of Immunobiology and Yale Center for Systems and Engineering Immunology, Yale School of Medicine, New Haven, CT, USA
- Department of Biomedical Engineering, Yale University, New Haven, CT,USA
| | - Rachel Sparks
- Laboratory of Immune System Biology, DIR, NIAID, NIH, Bethesda, MD,USA
| | - Gulbu Uzel
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Meryl A. Waldman
- Kidney Disease Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD, USA
| | - Christa S. Zerbe
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Ottavia M. Delmonte
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Jenna R. E. Bergerson
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Sanchita Das
- Division of Laboratory Medicine, NIH Clinical Center, Bethesda, MD,USA
| | - Alexandra F. Freeman
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Michail S. Lionakis
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Kaitlyn Sadtler
- Section for Immunoengineering, NIBIB, NIH, Bethesda, MD, USA
| | | | | | - Luigi D. Notarangelo
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Steven M. Holland
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Emily E. Ricotta
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research (DIR), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
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Avila LP, Sweeney KM, Evans CR, White DL, Kim WK, Regmi P, Williams SM, Nicholds J, Wilson JL. Body composition, gastrointestinal, and reproductive differences between broiler breeders fed using everyday or skip-a-day rearing programs. Poult Sci 2023; 102:102853. [PMID: 37423014 PMCID: PMC10344816 DOI: 10.1016/j.psj.2023.102853] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/30/2023] [Accepted: 06/04/2023] [Indexed: 07/11/2023] Open
Abstract
Broiler breeder feed restriction practices have intensified as broiler feed efficiency has been improved. Skip-a-day (SAD) rearing regimen has controlled breeder growth, although this practice has become questionable for the modern breeder. We compared everyday (ED) and SAD programs and evaluated their impact on pullet growth performance, body composition, gastrointestinal tract development, and reproduction. At d 0, Ross 708 (Aviagen) pullet chicks (n = 1,778) were randomly assigned to 7 floor pens. Three pens were fed using the ED and 4 pens with SAD program through wk 21 using a chain-feeder system. ED and SAD grower diets were formulated to be isonutritious, with the only difference that ED diets had more crude fiber. Pullets (n = 44 per pen) were moved to 16 hen pens by treatment at wk 21 with 3 YP males (Aviagen) in each pen. All birds were fed common laying diets. In addition to BW data, sampled pullets and hens were scanned using dual energy X-ray absorptiometry (DEXA) to obtain body bone density and composition. Hen performance and hatchery metrics were recorded through wk 60. ED birds were heavier with similar nutrient intake from wk 10 to 45 (P ≤ 0.013). Pullet uniformity was unaffected by feeding method (P ≥ 0.443). SAD pullets had less body fat at wk 19 (P = 0.034) compared to ED pullets, likely as a metabolic consequence of intermittent feeding. SAD birds had lower bone density at wk 7, 15, and 19 (P ≤ 0.026). At 4 wk of age, SAD pullets had less intestinal villi goblet cells compared to ED pullets (P ≤ 0.050), possibly explained by the effect that feed removal has on cell migration rates. Overall egg-specific gravity (P = 0.057) and hatch of fertile % (P = 0.088) tended to be higher in eggs from ED hens. Altogether, ED feeding increased young pullet intestinal goblet cells and increased both bone density and body fat at wk 19. ED program improved pullet feed conversion (2.6% less feed) and increased eggshell quality and hatch of fertile.
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Affiliation(s)
- L P Avila
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - K M Sweeney
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - C R Evans
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - D L White
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - W K Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - P Regmi
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - S M Williams
- Department of Population Health, University of Georgia, Athens, GA 30602, USA
| | - J Nicholds
- Department of Population Health, University of Georgia, Athens, GA 30602, USA
| | - J L Wilson
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA.
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Ahmmed P, Reynolds J, Bozkurt A, Regmi P. Continuous heart rate variability monitoring of freely moving chicken through a wearable electrocardiography recording system. Poult Sci 2022; 102:102375. [PMID: 36565628 PMCID: PMC9800322 DOI: 10.1016/j.psj.2022.102375] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/17/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Identification and quantification of stress and stress inducing factors are important components of animal welfare assessment and essential parts of poultry management. Measurement of the autonomic nervous system's influence on cardiac function using heart rate and heart rate variability (HR/HRV) indices can provide a non-invasive assessment of the welfare status of an animal. This paper presents a preliminary study showing the feasibility of continuous long-term measurement of HR/HRV indices in freely moving chicken. We developed and evaluated an electrocardiography (ECG) based HR/HRV recording system that can be used as a poultry wearable backpack for research studies. The backpack system was first validated against a commercial ECG amplifier, and the corresponding estimations of HR values matched well with each other. Then, an in vivo proof-of-concept experiment was conducted on floor-reared chickens to collect ECG data for 2 weeks. The extracted HR/HRV values show strong alignment with circadian patterns and well-defined sleep cycles. Wearable devices, like the backpack ECG system used in this study, may be best suited for application in freely moving poultry to get an insight into circadian abnormalities and sleep quality for stress and welfare management.
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Affiliation(s)
- P. Ahmmed
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - J. Reynolds
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - A. Bozkurt
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - P. Regmi
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA,Corresponding author:
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Jacobs L, Blatchford RA, de Jong IC, Erasmus MA, Levengood M, Newberry RC, Regmi P, Riber AB, Weimer SL. Enhancing their quality of life: environmental enrichment for poultry. Poult Sci 2022; 102:102233. [PMID: 36351344 PMCID: PMC9647224 DOI: 10.1016/j.psj.2022.102233] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/27/2022] [Accepted: 10/02/2022] [Indexed: 11/07/2022] Open
Abstract
Providing environmental enrichments that increase environmental complexity can benefit poultry welfare. This Poultry Science Association symposium paper is structured around four themes on 1) poultry preferences and affective states 2) species-specific behavior, including play behavior and the relationship between behavior, activity level and walking ability, 3) environmental enrichment and its relationship with indicators of welfare, and 4) a case study focusing on the application of enrichments in commercial broiler chicken production. For effective enrichment strategies, the birds' perspective matters most, and we need to consider individual variation, social dynamics, and previous experience when assessing these strategies. Play behavior can be a valuable indicator of positive affect, and while we do not yet know how much play would be optimal, absence of play suggests a welfare deficit. Activity levels and behavior can be improved by environmental modifications and prior research has shown that the activity level of broilers can be increased, at least temporarily, by increasing the environmental complexity. However, more research on impacts of enrichments on birds' resilience, on birds in commercial conditions, and on slow(er)-growing strains is needed. Finally, incorporating farmers' expertise can greatly benefit enrichment design and implementation on commercial farms.
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Affiliation(s)
- L Jacobs
- School of Animal Sciences, Virginia Tech, Blacksburg, VA, USA.
| | - R A Blatchford
- Department of Animal Science, Center for Animal Welfare, University of California, Davis, CA, USA
| | - I C de Jong
- Wageningen Livestock Research, Wageningen, the Netherlands
| | - M A Erasmus
- Department of Animal Sciences, Purdue University, West Lafayette, IA, USA
| | | | - R C Newberry
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | - P Regmi
- Department of Poultry Science, University of Georgia, Athens, GA, USA
| | - A B Riber
- Department of Animal Science, Aarhus University, Aarhus, Denmark
| | - S L Weimer
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
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Garcia J, Jones D, Gast R, Robison C, Regmi P, Karcher D. Influence of forage substrates on environmental and egg microbiology in cage-free aviary housing. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2021.100225] [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: 10/19/2022] Open
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Regmi P, Jones D, Gast R, Guard J, Karcher D. Egg carton and eggshell: is there a possibility of Salmonella cross-contamination? J APPL POULTRY RES 2021. [DOI: 10.1016/j.japr.2021.100185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Regmi P, Khanal S, Neelakanta G, Sultana H. Tick-Borne Flavivirus Inhibits Sphingomyelinase ( IsSMase), a Venomous Spider Ortholog to Increase Sphingomyelin Lipid Levels for Its Survival in Ixodes scapularis Ticks. Front Cell Infect Microbiol 2020; 10:244. [PMID: 32656091 PMCID: PMC7325911 DOI: 10.3389/fcimb.2020.00244] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 02/11/2020] [Accepted: 04/27/2020] [Indexed: 12/24/2022] Open
Abstract
Our previous study showed that cells from medically important arthropods, such as ticks, secrete extracellular vesicles (EVs) including exosomes that mediate transmission of flavivirus RNA and proteins to the human cells. Understanding the molecular determinants and mechanism(s) of arthropod-borne flavivirus transmission via exosome biogenesis is very important. In this current study, we showed that in the presence of tick-borne Langat Virus (LGTV; a member of tick-borne encephalitis virus complex), the expression of arthropod IsSMase, a sphingomyelinase D (SMase D) that catalyzes the hydrolytic cleavage of substrates like sphingomyelin (SM) lipids, was significantly reduced in both Ixodes scapularis ticks (in vivo) and in tick cells (in vitro). The IsSMase reduced levels correlated with down-regulation of its activity upon LGTV replication in tick cells. Our data show that LGTV-mediated suppression of IsSMase allowed accumulation of SM lipid levels that supported membrane-associated viral replication and exosome biogenesis. Inhibition of viral loads and SM lipid built up upon GW4869 inhibitor treatment reversed the IsSMase levels and restored its activity. Our results suggest an important role for this spider venomous ortholog IsSMase in regulating viral replication associated with membrane-bound SM lipids in ticks. In summary, our study not only suggests a novel role for arthropod IsSMase in tick-LGTV interactions but also provides new insights into its important function in vector defense mechanism(s) against tick-borne virus infection and in anti-viral pathway(s).
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Affiliation(s)
- Pravesh Regmi
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, United States
| | - Supreet Khanal
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, United States
| | - Girish Neelakanta
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, United States
| | - Hameeda Sultana
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, United States.,Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA, United States
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Abstract
Studies and reports on uptake of health services in Nepal and other low-income countries often focus on limitations due to physical factors, such as travel distance to health facility, or lack of medical facilities or electricity at the health care centre or focus on resources, such as lack of service providers, or lack of appropriately trained staff.
In this editorial article, we highlight the importance of discrimination as a reason for people not seeking available health care. Discrimination is particularly a barrier to service usage among the most deprived people in society, such as the Dalit community in Nepal and South Asia more generally. We discuss the caste-based discrimination in Nepal and its effects on health outcomes of those groups who experience such discrimination.
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Regmi P, Robison CI, Jones DR, Gast RK, Tempelman RJ, Karcher DM. Effects of different litter substrates and induced molt on production performance and welfare quality parameters of white Leghorn hens housed in multi-tiered aviary system. Poult Sci 2018; 97:3397-3404. [PMID: 29878244 DOI: 10.3382/ps/pey211] [Citation(s) in RCA: 7] [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] [Received: 01/23/2018] [Accepted: 04/27/2018] [Indexed: 11/20/2022] Open
Abstract
More than 90% of the commercial egg production in the United States is pledged to be in cage-free systems by 2025. Management practices like induced molting and litter area management have come under scrutiny because of the housing system change. The aim of this study was to determine the welfare and production implications of different litter substrates and also evaluate induced molting of hens in a cage-free system. Bovan White hens were housed in a multi-tier aviary system with daily access to open litter area of either Astroturf (AT), wood shavings (SH), or straw (ST) and bare concrete floor (CO) serving as control. At 68 wk of age, molt was induced in half of the hens whereas the other half continued without molting to 116 wk. Production and welfare parameters were measured periodically throughout first and second cycles. Litter substrate did not influence hen-day production and case-weight measurements. However, CO had the lowest total number of eggs produced during the first cycle (P < 0.05). Hen-day percentage was approximately 14% greater in molted hens during the second cycle with egg case weight being heavier in non-molt hens toward the end of second cycle (P < 0.05). The only welfare parameter influenced by litter substrate during the first cycle was a greater crop feather loss in AT than ST at mid-lay (P < 0.05). Keel deformations increased with age irrespective of the litter substrate with 91.5% of palpated hens having keel deformations at the end of first cycle (P < 0.05). Molting did not influence the keel palpation and footpad scores whereas frequency of moderate comb wound was greater in molt hens during molt (P < 0.05). Severe feather loss was seen in non-molt hens during the second cycle (P < 0.05). Litter substrate does not affect production and physical parameters of welfare of hens in a multi-tier aviary system. Additionally, induced molting can be successfully carried out in the multi-tier cage-free system.
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Affiliation(s)
- P Regmi
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - C I Robison
- Department of Animal Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - D R Jones
- US National Poultry Research Center, USDA-ARS, Egg Safety and Quality Research Unit, Athens, GA 30605, USA
| | - R K Gast
- US National Poultry Research Center, USDA-ARS, Egg Safety and Quality Research Unit, Athens, GA 30605, USA
| | - R J Tempelman
- Department of Animal Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - D M Karcher
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
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Jones D, Karcher D, Regmi P, Robison C, Gast R. Hen genetic strain and extended cold storage influence on physical egg quality from cage-free aviary housing system. Poult Sci 2018; 97:2347-2355. [DOI: 10.3382/ps/pex052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 03/23/2018] [Indexed: 11/20/2022] Open
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11
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Jones D, Ward G, Regmi P, Karcher D. Impact of egg handling and conditions during extended storage on egg quality. Poult Sci 2018; 97:716-723. [DOI: 10.3382/ps/pex351] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/25/2017] [Indexed: 11/20/2022] Open
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12
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Regmi P, Nelson N, Haut R, Orth M, Karcher D. Influence of age and housing systems on properties of tibia and humerus of Lohmann White hens
: Bone properties of laying hens in commercial housing systems. Poult Sci 2017; 96:3755-3762. [DOI: 10.3382/ps/pex194] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 06/27/2017] [Indexed: 11/20/2022] Open
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13
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Regmi P, Cox A, Robison C, Karcher D. Correlation analysis of cortical geometry of tibia and humerus of white leghorns using clinical quantitative computed tomography and microcomputed tomography scans. Poult Sci 2017; 96:2950-2955. [DOI: 10.3382/ps/pex064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 02/28/2017] [Indexed: 11/20/2022] Open
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14
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Regmi P, Baral B, Raut M, Khanal M. Atherogenic index of plasma for prediction of future cardiovascular disease in prediabetes and diabetes population. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.636] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Regmi P, Nelson N, Steibel JP, Anderson KE, Karcher DM. Comparisons of bone properties and keel deformities between strains and housing systems in end-of-lay hens. Poult Sci 2016; 95:2225-34. [PMID: 27433008 DOI: 10.3382/ps/pew199] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 05/04/2016] [Indexed: 01/28/2023] Open
Abstract
Susceptibility of caged layers to osteoporosis and cage layer fatigue has generated interest in newer housing systems that favor increased load-bearing activities. However, high incidences of fractures incurred during lay period have been reported in these newer systems. This study is aimed at determining the housing and strain effects on bone properties: dry weight, percentage ash content, cortical density (CBD), cortical thickness (CBT), and keel bone deformities. Tibia, femur, and keel from Hy-Line Brown (HB), Hy-Line Silver Brown (SB), and Barred Plymouth Rock (BR) hens housed in conventional cages (CC), cage-free (CF), and cage-free with range (outdoor access; R) were studied. At 78 wk, 60 hens from each strain and housing system combination were euthanized and bones were excised for analysis. Quantitative computed tomography (QCT) was used to measure CBD and CBT in each bone. Three-dimensional images of keels were generated from software using QCT scans to analyze the deformities. Tibiae CBT was greater (P < 0.01) in BR compared to other two strains. Between housing systems, CBT was greater (P < 0.05) for mid and distal tibia of R and CF compared to CC. Tibiae and femoral cortex were denser (P < 0.05) in BR compared to HB and SB. There was no effect of housing system for femur CBD, but CBD was greater (P < 0.05) for middle and distal tibia of birds housed in R compared to CC. CBD for keel bone was greater (P < 0.05) in CF and R birds compared to CC birds. The housing system did not influence the dry bone weight and ash percentage of tibiae and femur. Each housing system was associated with high prevalence (>90%) of keel deformities and the housing and genotype influenced the type of deformity. These findings indicate that range and cage-free housing may have beneficial impact on tibia and keel bone integrity compared to conventional cages but the improvement may not be sufficient to prevent fractures or deformities of keel.
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Affiliation(s)
- P Regmi
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan
| | - N Nelson
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan
| | - J P Steibel
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan
| | - K E Anderson
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, North Carolina
| | - D M Karcher
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan
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Jones DR, Guard J, Gast RK, Buhr RJ, Fedorka-Cray PJ, Abdo Z, Plumblee JR, Bourassa DV, Cox NA, Rigsby LL, Robison CI, Regmi P, Karcher DM. Influence of commercial laying hen housing systems on the incidence and identification of Salmonella and Campylobacter. Poult Sci 2016; 95:1116-24. [PMID: 26976901 PMCID: PMC4876611 DOI: 10.3382/ps/pew036] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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: 09/25/2015] [Accepted: 01/05/2016] [Indexed: 11/30/2022] Open
Abstract
The housing of laying hens is important for social, industrial, and regulatory aspects. Many studies have compared hen housing systems on the research farm, but few have fully examined commercial housing systems and management strategies. The current study compared hens housed in commercial cage-free aviary, conventional cage, and enriched colony cage systems. Environmental and eggshell pool samples were collected from selected cages/segments of the housing systems throughout the production cycle and monitored for Salmonella and Campylobacter prevalence. At 77 wk of age, 120 hens per housing system were examined for Salmonella and Campylobacter colonization in the: adrenal glands, spleen, ceca, follicles, and upper reproductive tract. All isolates detected from environmental swabs, eggshell pools, and tissues were identified for serotype. Two predominant Salmonella were detected in all samples: S. Braenderup and S. Kentucky. Campylobacter coli and C. jejuni were the only Campylobacter detected in the flocks. Across all housing systems, approximately 7% of hens were colonized with Salmonella, whereas > 90% were colonized with Campylobacter. Salmonella Braenderup was the isolate most frequently detected in environmental swabs (P < 0.0001) and housing system impacted Salmonella spp. shedding (P < 0.0001). Campylobacter jejuni was the isolate most frequently found in environmental swabs (P < 0.01), while housing system impacted the prevalence of C. coli and jejuni in ceca (P < 0.0001). The results of this study provide a greater understanding of the impact of hen housing systems on hen health and product safety. Additionally, producers and academia can utilize the findings to make informed decisions on hen housing and management strategies to enhance hen health and food safety.
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Affiliation(s)
- D R Jones
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - J Guard
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - R K Gast
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - R J Buhr
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - P J Fedorka-Cray
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - Z Abdo
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - J R Plumblee
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - D V Bourassa
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - N A Cox
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - L L Rigsby
- USDA, Agricultural Research Service, US National Poultry Research Center, Athens, GA 30605
| | - C I Robison
- Department of Animal Science, Michigan State University, East Lansing, MI 48824
| | - P Regmi
- Department of Animal Science, Michigan State University, East Lansing, MI 48824
| | - D M Karcher
- Department of Animal Science, Michigan State University, East Lansing, MI 48824
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Regmi P, Smith N, Nelson N, Haut R, Orth M, Karcher D. Housing conditions alter properties of the tibia and humerus during the laying phase in Lohmann white Leghorn hens. Poult Sci 2016; 95:198-206. [DOI: 10.3382/ps/pev209] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2015] [Indexed: 11/20/2022] Open
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Kedia A, Dwivedy AK, Pandey AK, Kumar RR, Regmi P, Dubey NK. Efficacy of chemically characterized Foeniculum vulgare Mill seed essential oil in protection of raw tobacco leaves during storage against fungal and aflatoxin contamination. J Appl Microbiol 2015; 119:991-8. [PMID: 26218659 DOI: 10.1111/jam.12915] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/29/2015] [Accepted: 07/08/2015] [Indexed: 01/18/2023]
Abstract
AIMS To report fungal and aflatoxin contamination in stored tobacco leaves and the potential of Foeniculum vulgare (fennel) seed essential oil (EO) as a plant-based preservative in protection of tobacco during storage. METHODS AND RESULTS Mycological analysis of tobacco samples was done by surface sterilization and serial dilution tests. The Aspergillus flavus isolates were screened for their toxigenicity. Both in vivo and in vitro tests were done to evaluate antifungal and antiaflatoxigenic efficacy of chemically characterized EO. The mycoflora analysis revealed 108 fungal colonies belonging to five genera and nine species. All A. flavus isolates were found aflatoxigenic during screening. Gas chromatography and mass spectrometry analysis of EO identified 19 components (99·66%); estragole being the major component (47·49%). The EO showed broad fungitoxicity at 1·25 μl ml(-1) and 100% inhibition to AFB1 production as well as ergosterol synthesis at 1·0 μl ml(-1) concentration. EO showed 100% protection of stored tobacco samples from aflatoxin B1 contamination. CONCLUSIONS The fennel EO can thus be formulated as a plant-based preservative for food items. SIGNIFICANCE AND IMPACT OF THE STUDY The present investigation comprises the first report on antiaflatoxin efficacy of fennel oil and its potency in the protection of tobacco leaves from fungal and aflatoxin contamination during storage.
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Affiliation(s)
- A Kedia
- Laboratory of Herbal Pesticides, Centre of advanced study in Botany, Banaras Hindu University, Varanasi, India
| | - A K Dwivedy
- Laboratory of Herbal Pesticides, Centre of advanced study in Botany, Banaras Hindu University, Varanasi, India
| | - A K Pandey
- Laboratory of Herbal Pesticides, Centre of advanced study in Botany, Banaras Hindu University, Varanasi, India
| | - R R Kumar
- Laboratory of Herbal Pesticides, Centre of advanced study in Botany, Banaras Hindu University, Varanasi, India
| | - P Regmi
- Laboratory of Herbal Pesticides, Centre of advanced study in Botany, Banaras Hindu University, Varanasi, India
| | - N K Dubey
- Laboratory of Herbal Pesticides, Centre of advanced study in Botany, Banaras Hindu University, Varanasi, India
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Casey-Trott T, Heerkens JLT, Petrik M, Regmi P, Schrader L, Toscano MJ, Widowski T. Methods for assessment of keel bone damage in poultry. Poult Sci 2015; 94:2339-50. [PMID: 26287001 DOI: 10.3382/ps/pev223] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [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: 01/28/2015] [Accepted: 06/15/2015] [Indexed: 12/22/2022] Open
Abstract
Keel bone damage (KBD) is a critical issue facing the laying hen industry today as a result of the likely pain leading to compromised welfare and the potential for reduced productivity. Recent reports suggest that damage, while highly variable and likely dependent on a host of factors, extends to all systems (including battery cages, furnished cages, and non-cage systems), genetic lines, and management styles. Despite the extent of the problem, the research community remains uncertain as to the causes and influencing factors of KBD. Although progress has been made investigating these factors, the overall effort is hindered by several issues related to the assessment of KBD, including quality and variation in the methods used between research groups. These issues prevent effective comparison of studies, as well as difficulties in identifying the presence of damage leading to poor accuracy and reliability. The current manuscript seeks to resolve these issues by offering precise definitions for types of KBD, reviewing methods for assessment, and providing recommendations that can improve the accuracy and reliability of those assessments.
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Affiliation(s)
- T Casey-Trott
- Animal and Poultry Science, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - J L T Heerkens
- Institute for Agricultural and Fisheries Research, Animal Sciences Unit - Farm Animal Welfare & Behaviour Research Group, Scheldeweg 68, 9090 Melle, Belgium
| | - M Petrik
- Animal and Poultry Science, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - P Regmi
- Department of Animal Science, Anthony Hall, 474 S. Shaw Lane, East Lansing, MI 48824 USA
| | - L Schrader
- Research Center for Proper Housing: Poultry and Rabbits (ZTHZ) Division of Animal Welfare, VPH Institute, University of Bern, Burgerweg 22, 3052 Zollikofen, Switzerland
| | - M J Toscano
- Research Center for Proper Housing: Poultry and Rabbits (ZTHZ) Division of Animal Welfare, VPH Institute, University of Bern, Burgerweg 22, 3052 Zollikofen, Switzerland
| | - T Widowski
- Animal and Poultry Science, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
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Abstract
Alternative housing systems for laying hens provide mechanical loading and help reduce bone loss. Moreover, achieving greater peak bone mass during pullet phase can be crucial to prevent fractures in the production period. The aim of this study was to determine the housing system effects on bone quality of pullets. Tibiae and humeri of White Leghorn pullets reared in conventional cages (CCs) and a cage-free aviary (AV) system were studied. At 16 wk, 120 birds at random from each housing system were euthanized. Right and left tibiae and humeri were collected and further analyzed. Cortical bone density and thickness were measured using computed tomography. Periosteal and endosteal dimensions were measured at the fracture site during mechanical testing. At 4, 8, 12, and 16 wk, serum concentrations of osteocalcin and hydroxylysyl pyridinoline were analyzed as markers of bone formation and resorption. Cortical bone density was higher (P<0.05) in humeri of AV pullets, and tibiae were denser (P<0.05) for AV pullets in the distal section of the bone compared to CC pullets. Ash content was higher (P<0.05) in AV humeri with no difference in tibiae ash content. Tibiae and humeri of AV pullets had a thicker cortex than the CC pullets (P<0.05). Additionally, the tibiae and humeri of AV pullets had greater (P<0.05) second moment of areas than the CC pullets. While some bone material properties between groups were different (P<0.05), the differences were so small (<7%) that they likely have no clinical significance. Serum osteocalcin concentrations were not different between the treatments, but hydroxylsyl pyridinoline concentrations were higher in CC pullets at 12 wk compared to the AV pullets and the effect reversed at 16 wk (P<0.05). These findings indicate that tibiae and humeri respond differently to load bearing activities during growth. The improved load bearing capability and stiffness in bones of AV pullets were related to increased cross-sectional geometry.
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Affiliation(s)
- P Regmi
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan 48824
| | - T S Deland
- Orthopaedic Biomechanics Laboratories, Michigan State University, East Lansing Michigan 48824
| | - J P Steibel
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan 48824
| | - C I Robison
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan 48824
| | - R C Haut
- Orthopaedic Biomechanics Laboratories, Michigan State University, East Lansing Michigan 48824
| | - M W Orth
- Department of Animal and Food Sciences, Texas Tech University, Lubbock, Texas 79409
| | - D M Karcher
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan 48824
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Van Wyhe R, Regmi P, Powell B, Haut R, Orth M, Karcher D. Bone characteristics and femoral strength in commercial toms: The effect of protein and energy restriction. Poult Sci 2014; 93:943-52. [DOI: 10.3382/ps.2013-03604] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Pandeya A, Sharma M, Regmi P, Basukala A, Lamsal M. Pattern of dyslipidemia and evaluation of non-HDL cholesterol as a marker of risk factor for cardiovascular disease in type 2 diabetes mellitus. Nepal Med Coll J 2012; 14:278-282. [PMID: 24579534] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
People with type 2 Diabetes have an elevated risk for developing cardiovascular disease (CVD) for which dyslipidemia is the major contributor. Diabetic patients have characteristic pattern of dyslipidemia with decreased level of high density lipoprotein cholesterol (HDL-C) and elevated triglycerides (TG) level. However, in diabetes mellitus, low density lipoprotein cholesterol (LDL-C) which is used as one of the markers for the risk of CVD, is underestimated so in such cases the levels of non-High density lipoprotein cholesterol (non-HDL-C) can be a stronger predictor of CVD as it strongly correlates with atherogenic lipoproteins. Therefore, an attempt has been made to evaluate the level of non-HDL-C as a newer marker for the risk of cardiovascular disease and to find out the pattern of dyslipidemia in diabetes mellitus. The present study comprised of 82 type 2 Diabetic cases and 81 non-diabetic controls. Among the diabetics, the majority of the subjects (61.0%) were HDL-C dyslipidemic. However, among the controls, the maximum numbers of individuals (40.7%) were TG dyslipidemic. Diabetics have significantly elevated ratio of total cholesterol to high density lipoprotein cholesterol (TC/HDL-C) and the significant increased levels of non-high density lipoprotein cholesterol (non-HDL-C) compared to controls which can be used as markers of dyslipidemia and can also be used to predict the risk of cardiovascular disease in type 2 Diabetes Mellitus.
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Affiliation(s)
- A Pandeya
- Department of Biochemistry, Kathmandu Medical College, Kathmandu.
| | - M Sharma
- Department of Pathology, NPHL, Kathmandun Nepal
| | - P Regmi
- Nepal Medical College, Kathmandu
| | - A Basukala
- Bonn-Rhein-Sieg University of Applied Sciences, Germany
| | - M Lamsal
- BP Koirala Institute of Health Sciences, Dharan
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Upreti D, Regmi P, Pant P, Simkhada P. Young people's knowledge, attitude, and behaviour on STI/HIV/AIDS in the context of Nepal: a systematic review. Kathmandu Univ Med J (KUMJ) 2010; 7:383-91. [PMID: 20502079 DOI: 10.3126/kumj.v7i4.2759] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Sexual and reproductive health of young people has become a major health problem in recent decades. Recent and rapidly increasing Human Immune Deficiency Virus (HIV) rates show an urgent need for Sexually Transmitted Infections (STIs) and HIV prevention interventions in Nepal. OBJECTIVES This paper attempts to assess knowledge, attitude and behaviour on STIs/HIV/AIDS in the context of young peoples of Nepal. METHOD AND MATERIAL A systematic review based on the available literature was carried out including both qualitative and quantitative studies. RESULTS Our findings indicate that the overall knowledge regarding STIs and HIV/AIDS is high although the level of knowledge seems to differ according to education, gender, and area of residence. Knowledge about condoms was also very high but practice of correct and consistent use in premarital and extramarital sexual relations with non-regular partners seems to be lower. The overall sexual behaviour among young people is unsafe. CONCLUSION This suggests that young people's sexual and reproductive health issues need to be further addressed and explored in order to promote safer and responsible sexual behaviour.
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Affiliation(s)
- D Upreti
- Section of Population Health, University of Aberdeen, UK.
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Regmi P, Simkhada P, Van Teijlingen ER. Sexual and reproductive health status among young peoples in Nepal: opportunities and barriers for sexual health education and services utilization. Kathmandu Univ Med J (KUMJ) 2008; 6:248-256. [PMID: 18769100] [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: 05/26/2023]
Abstract
This article attempts to summarise the situation of sexual and reproductive health among young people in Nepal. Modernisation and social transformation are occurring rapidly in Nepalese society. Growing expansion of communication and transportation networks, urbanisation and in-migration of population to urban areas is creating a different socio-cultural environment, which is conducive to more social interactions between young girls and boys in Nepal. Rising age at marriage has now opened a window of opportunity for pre-marital and unsafe sexual activity among young people in Nepal which creates risks of unwanted pregnancy, STIs/HIV and AIDS. Several socio-economic, demographic and cultural factors have been identified as encouraging factors for risk taking behaviours among young people. Improving access to youth friendly services, implementing peer education programmes for school and out of school going adolescents, developing effective Information, Communication and Education (IEC) materials and curricula have been highly suggested to improve the existing young people's sexual and reproductive health status.
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Affiliation(s)
- P Regmi
- Department of Public Health, University of Aberdeen, United Kingdom.
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Pramanik T, Regmi P, Shrestha P. Detection of individuals prone to develop hypertension in their future life. Nepal Med Coll J 2008; 10:35-37. [PMID: 18700629] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Hypertension is a global burning health problem. Early detection of proneness to hypertension may help an individual to lead a healthy life by altering the life style (by diet restriction, exercise etc.). Subjects at high risk of future hypertension e.g. the persons of hypertensive family and/or having high resting heart rate etc. show blood pressure hyper-responsiveness to stress. Elevated blood pressure due to sympathetic stimulation prevailed longer time in susceptible persons. In the present study sympathetic stimulation exerted through cold pressor test (hand immersion up to the wrist in 4 degrees C water) resulted in elevation of blood pressure and heart rate in all young male normotensive individuals (age 18-35 years, n=72). Nevertheless, blood pressure and heart rate returned to baseline, following 5 minutes of withdrawal of the stressor, in case of volunteers from normotensive families. On the other hand, the subjects whose parents, either or both were reported to be hypertensive showed elevated diastolic blood pressure even after 5 minutes of withdrawal of the said stressor- indicating that the autonomic nervous system in them was not competent enough for lowering the diastolic pressure quickly to baseline as observed in the volunteers from the normotensive families. The present study revealed that the young subjects who showed greater and prolonged responsiveness to diastolic blood pressure due to sympathetic stimulation through cold pressor test are prone to develop hypertension in future.
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Affiliation(s)
- T Pramanik
- Department of Physiology, Nepal Medical College Kathmandu, Nepal
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