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Chu L, Chen K, Yang Z, Crowley S, Dubrow R. A unified framework for assessing interaction effects among environmental exposures in epidemiologic studies: A case study on temperature, air pollution, and kidney-related conditions in New York state. Environ Res 2024; 248:118324. [PMID: 38301759 DOI: 10.1016/j.envres.2024.118324] [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] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 12/05/2023] [Accepted: 01/26/2024] [Indexed: 02/03/2024]
Abstract
BACKGROUND There are various methods to assess interaction effects. However, current methods have limitations, and quantification of interaction effects is rarely performed. This study aimed to develop a unified quantitative framework for assessing interaction effects. METHODS We proposed a novel framework using log-linear models with a product term(s) across the exposures that generates parametric bi-variate association and interaction effect surfaces and allows flexible functional forms for exposures in the interaction term(s). In a case study, we assessed the interaction effects between temperature and air pollution (i.e., PM2.5, NO2, and O3) on risk for kidney-related conditions in New York State (2007-2016) using a case-crossover design with conditional logistic models. Our measures of exposure were the moving averages at lag 0-5 days for air pollution (linear) and daytime mean outdoor wet-bulb globe temperature (WBGT; using a natural cubic spline). RESULTS We derived closed-form expressions for the magnitude of multiplicative interaction effects (the joint relative risk divided by the product of the two conditional relative risks) and their uncertainties. In the case study, we found a Bonferroni-corrected significant multiplicative interaction effect (IE) between outdoor WBGT at the 99th percentile (median as the reference) and (1) PM2.5 (per 5 μg/m3 increase, IE = 1.052; 95 % confidence interval [CI]: 1.019, 1.087) for acute kidney failure and (2) O3 (per 5 ppb increase; IE = 1.022; 95 % CI: 1.008, 1.036) for urolithiasis (the latter being inconclusive based on the sensitivity analysis). CONCLUSIONS Our framework allows different functional forms of exposure variables in the interaction term, quantifies the magnitudes of entire-exposure-range (in addition to discrete exposure level) multiplicative interaction effects and their uncertainties in a categorical or continuous (linear or non-linear) manner, and harmonizes the two-way evaluation of effect modification. The case study underscores co-consideration of heat and air pollution when estimating health burden and designing heat/pollution alert systems.
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Affiliation(s)
- Lingzhi Chu
- Department of Environmental Health Sciences, Yale School of Public Health, 60 College Street, New Haven, CT, 06520-8034, USA; Yale Center on Climate Change and Health, Yale School of Public Health, 60 College Street, New Haven, CT, 06520-8034, USA.
| | - Kai Chen
- Department of Environmental Health Sciences, Yale School of Public Health, 60 College Street, New Haven, CT, 06520-8034, USA; Yale Center on Climate Change and Health, Yale School of Public Health, 60 College Street, New Haven, CT, 06520-8034, USA
| | - Zhuoran Yang
- Department of Statistics and Data Science, Yale University, 24 Hillhouse Avenue, New Haven, CT, 06511-6814, USA
| | - Susan Crowley
- Department of Medicine (Nephrology), Yale University School of Medicine, New Haven, CT, 06520, USA; Veterans Administration Health Care System of Connecticut, West Haven, CT, 06516, USA
| | - Robert Dubrow
- Department of Environmental Health Sciences, Yale School of Public Health, 60 College Street, New Haven, CT, 06520-8034, USA; Yale Center on Climate Change and Health, Yale School of Public Health, 60 College Street, New Haven, CT, 06520-8034, USA
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Videla Rodriguez EA, Mitchell JBO, Smith VA. Robust identification of interactions between heat-stress responsive genes in the chicken brain using Bayesian networks and augmented expression data. Sci Rep 2024; 14:9019. [PMID: 38641606 PMCID: PMC11031576 DOI: 10.1038/s41598-024-58679-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 04/02/2024] [Indexed: 04/21/2024] Open
Abstract
Bayesian networks represent a useful tool to explore interactions within biological systems. The aims of this study were to identify a reduced number of genes associated with a stress condition in chickens (Gallus gallus) and to unravel their interactions by implementing a Bayesian network approach. Initially, one publicly available dataset (3 control vs. 3 heat-stressed chickens) was used to identify the stress signal, represented by 25 differentially expressed genes (DEGs). The dataset was augmented by looking for the 25 DEGs in other four publicly available databases. Bayesian network algorithms were used to discover the informative relationships between the DEGs. Only ten out of the 25 DEGs displayed interactions. Four of them were Heat Shock Proteins that could be playing a key role, especially under stress conditions, where maintaining the correct functioning of the cell machinery might be crucial. One of the DEGs is an open reading frame whose function is yet unknown, highlighting the power of Bayesian networks in knowledge discovery. Identifying an initial stress signal, augmenting it by combining other databases, and finally learning the structure of Bayesian networks allowed us to find genes closely related to stress, with the possibility of further exploring the system in future studies.
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Affiliation(s)
| | - John B O Mitchell
- EaStCHEM School of Chemistry and BSRC, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - V Anne Smith
- School of Biology, University of St Andrews, St Andrews, Fife, KY16 9TH, UK.
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Khosravipour M, Golbabaei F. Short-term ambient temperature variations and incidence of preterm birth: A systematic review and meta-analysis. Int J Hyg Environ Health 2024; 256:114319. [PMID: 38171266 DOI: 10.1016/j.ijheh.2023.114319] [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] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 12/18/2023] [Accepted: 12/23/2023] [Indexed: 01/05/2024]
Abstract
This study aimed to determine the short-term effects of ambient temperature variations exposures on the incidence of preterm birth (PTB) for each single lag day (lag0 to lag6) and cumulative lag days (lag0-1 to lag0-6) up to a week before birth. To find relevant publications, online databases, including Web of Science, PubMed, and Scopus were searched with appropriate keywords and Mesh terms from their inception to October 25, 2023. Overall, the number of 39 observational studies with 12.5 million pregnant women and 700.000 cases of PTB met our eligibility criteria. The associations of temperature variations with the incidence of PTB were investigated with two different meta-analyses, including the percentile meta-analysis (comparing different percentiles (P1 to P99) with a referent percentile (P50)), and the linear meta-analysis (per 5 °C increment of the temperature levels). For the percentile meta-analysis, we observed both extreme cold (P1, only lag 0) and heat (P95 and P99 with the highest risk at lag1 and lag0-6) exposures can be significantly associated with a higher risk of PTB. The pooled RR (95 % CI) per 5 °C increase in the temperature levels at lag0-6 was estimated as 1.038 (1.018, 1.058) for the overall analysis. Subgroup analysis based on the season shows a significant association in the warm season (RR = 1.082 and 95 % CI = 1.036, 1.128) at all lag days but not the cold season. For the single lag day, we observed the risk of PTB is the highest at lag1 and decreased with moving to lag6. In sum, we suppose there is a nearly V-shape non-linear association between air temperature levels and the incidence of PTB with the linear relationship for each unit increase (also decrease) in the temperature levels above (also below) moderate temperature limits. Future studies should investigate possible association of occupational heat and cold exposure during pregnancy on the incidence of adverse birth outcomes such as PTB.
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Affiliation(s)
- Masoud Khosravipour
- Occupational Health Engineering Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Farideh Golbabaei
- Occupational Health Engineering Department, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
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de Andrade Pantoja MH, Poleti MD, de Novais FJ, Duarte KKS, Mateescu RG, Mourão GB, Coutinho LL, Fukumasu H, Titto CG. Skin transcriptomic analysis reveals candidate genes and pathways associated with thermotolerance in hair sheep. Int J Biometeorol 2024; 68:435-444. [PMID: 38147121 DOI: 10.1007/s00484-023-02602-4] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 11/10/2023] [Accepted: 12/09/2023] [Indexed: 12/27/2023]
Abstract
The skin plays an important role in thermoregulation. Identification of genes on the skin that contribute to increased heat tolerance can be used to select animals with the best performance in warm environments. Our objective was to identify candidate genes associated with the heat stress response in the skin of Santa Ines sheep. A group of 80 sheep assessed for thermotolerance was kept in a climatic chamber for 8 days at a stress level temperature of 36 °C (10 am to 04 pm) and a maintenance temperature of 28 °C (04 pm to 10 am). Two divergent groups, with seven animals each, were formed after ranking them by thermotolerance using rectal temperature. From skin biopsy samples, total RNA was extracted, quantified, and used for RNA-seq analysis. 15,989 genes were expressed in sheep skin samples, of which 4 genes were differentially expressed (DE; FDR < 0.05) and 11 DE (FDR 0.05-0.177) between the two divergent groups. These genes are involved in cellular protection against stress (HSPA1A and HSPA6), ribosome assembly (28S, 18S, and 5S ribosomal RNA), and immune response (IGHG4, GNLY, CXCL1, CAPN14, and SAA-4). The candidate genes and main pathways related to heat tolerance in Santa Ines sheep require further investigation to understand their response to heat stress in different climatic conditions and under solar radiation. It is essential to verify whether these genes and pathways are present in different breeds and to understand the relationship between heat stress and other genes identified in this study.
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Affiliation(s)
- Messy Hannear de Andrade Pantoja
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, 13635-900, Brazil
| | - Mirele Daiana Poleti
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, 13635-900, Brazil
| | - Francisco José de Novais
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, 13635-900, Brazil
| | - Kelly Kéffny Souza Duarte
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, 13635-900, Brazil
| | - Raluca G Mateescu
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - Gerson Barreto Mourão
- Escola Superior de Agricultura Luiz de Queiroz Universidade de São Paulo, Av. Pádua Dias, 11, Piracicaba, São Paulo, Brazil
| | - Luiz Lehmann Coutinho
- Escola Superior de Agricultura Luiz de Queiroz Universidade de São Paulo, Av. Pádua Dias, 11, Piracicaba, São Paulo, Brazil
| | - Heidge Fukumasu
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, 13635-900, Brazil
| | - Cristiane Gonçalves Titto
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, 13635-900, Brazil.
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Goto H, Nakashima H, Mori K, Tanoue K, Ito S, Kearney BM, Kato A, Nakashima M, Imakiire T, Kumagai H, Kinoshita M, Oshima N. l-Carnitine pretreatment ameliorates heat stress-induced acute kidney injury by restoring mitochondrial function of tubular cells. Am J Physiol Renal Physiol 2024; 326:F338-F351. [PMID: 38095023 DOI: 10.1152/ajprenal.00196.2023] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 02/15/2024] Open
Abstract
A major complication of heat-related illness is the development of acute kidney injury (AKI) and damage to kidney tubular cells. Because kidney tubular cells use fatty acids as a major energy source, impaired fatty acid oxidation (FAO) may be associated with kidney injury due to heat stress. Carnitine is essential in the transportation of fatty acid into mitochondria for FAO. To date, there has been little attention given to the role of carnitine in heat-related illness and AKI. To evaluate the relationship between carnitine inadequacy and heat-related illness severity or AKI, we examined serum carnitine levels in patients with heat-related illness. We also used heat-stressed mice to investigate the effect of l-carnitine pretreatment on various kidney functions such as mitochondrial activity, proinflammatory changes in kidney macrophages, and histological damage. We observed an elevation in serum acylcarnitine levels, indicating carnitine insufficiency in patients with severe heat-related illness and/or AKI. l-Carnitine pretreatment ameliorated ATP production in murine tubular cell mitochondria and prevented a change in the kidney macrophage population dynamics observed in AKI: a decrease in tissue-resident macrophages, influx of bone marrow-derived macrophages, and change toward proinflammatory M1 polarization. In conclusion, carnitine insufficiency may be closely associated with severe heat-related illness and related AKI. Enhancement of the FAO pathway by l-carnitine pretreatment may prevent heat stress-induced AKI by restoring mitochondrial function.NEW & NOTEWORTHY Enhancing fatty acid oxidation (FAO) after acute kidney injury (AKI) improves renal outcomes. This report shows that carnitine insufficiency, which could inhibit FAO, correlates to severe heat-related illness and AKI in a clinical study. We also demonstrate that administering l-carnitine to mice improves mitochondrial respiratory function and prevents deleterious changes in renal macrophage, resulting in improved renal outcomes of heat-induced AKI. l-Carnitine may be an effective preventive treatment for severe heat-related illness and related AKI.
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Affiliation(s)
- Hiroyasu Goto
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Japan
| | - Hiroyuki Nakashima
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Japan
| | - Kazuma Mori
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Japan
| | - Keiko Tanoue
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Japan
| | - Seigo Ito
- Self-Defense Force Iruma Hospital, Iruma, Japan
| | - Bradley M Kearney
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Japan
- United States Army Japan Engineer and Scientist Exchange Program, Camp Zama, Zama, Japan
| | - Azusa Kato
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Japan
| | - Masahiro Nakashima
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Japan
| | - Toshihiko Imakiire
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Japan
| | - Hiroo Kumagai
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Japan
| | - Manabu Kinoshita
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Japan
| | - Naoki Oshima
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Japan
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Stelios V, Ilias G, Ioannis P, Christos A, Elias P, Paschalis F. Effect of three different insect larvae on growth performance and antioxidant activity of thigh, breast, and liver tissues of chickens reared under mild heat stress. Trop Anim Health Prod 2024; 56:80. [PMID: 38358592 PMCID: PMC10869369 DOI: 10.1007/s11250-024-03923-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/06/2024] [Indexed: 02/16/2024]
Abstract
This study investigated the potential of insect-based diets to mitigate heat stress impact on broiler chickens, focusing on growth performance and antioxidant stability. Four dietary groups were examined, including a control and three treated groups with Tenebrio molitor (TM), Hermetia illucens (HI), and Zophobas morio (ZM) larvae, respectively, at a 5% replacement ratio. Temperature and relative humidity of the poultry house were monitored. Under heat stress conditions, the HI-fed group consistently exhibited the highest body weight, demonstrating their remarkable growth-promoting potential. TM-fed broilers also displayed commendable growth compared to the control. Insect larvae inclusion in the diet improved feed intake during early growth stages, indicating their positive influence on nutrient utilization. Regarding antioxidant stability, malondialdehyde (MDA) levels in the liver, an oxidative stress and lipid peroxidation marker, were significantly lower in the TM-fed group, suggesting reduced oxidative stress. While the specific insect-based diet did not significantly affect MDA levels in thigh and breast tissues, variations in the total phenolic content (TPC) were observed across tissues, with HI larvae significantly increasing it in the breast. However, the total antioxidant capacity (TAC) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) levels did not differ significantly among dietary groups in the examined tissues. Results suggest that insect-based diets enhance broiler growth and potentially reduce oxidative stress, particularly in the liver. Dietary presence of bioactive compounds may contribute to these benefits. Further research is required to fully elucidate the mechanisms underlying these findings. Insect-based diets seem to offer promise as feed additives in addressing the multifaceted challenges of oxidative stress and enhancing broiler health and resilience under heat stress conditions.
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Affiliation(s)
- Vasilopoulos Stelios
- Laboratory of Nutrition, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, PC, Greece
| | - Giannenas Ilias
- Laboratory of Nutrition, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, PC, Greece.
| | - Panitsidis Ioannis
- Laboratory of Nutrition, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, PC, Greece
| | - Athanassiou Christos
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Phytokou Str., 38446, Volos, N. Ionia, Greece
| | - Papadopoulos Elias
- Laboratory of Parasitology and Parasitic Diseases, Faculty of Veterinary Medicine, Aristotle University, 54124, Thessaloniki, Greece
| | - Fortomaris Paschalis
- Laboratory of Animal Husbandry, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
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Yue C, Zhang K, Liu Z, Lü W, Guo H, Zhao L, Song X, Fang JKH. The Role of the TLR4-MyD88 Signaling Pathway in the Immune Response of the Selected Scallop Strain "Hongmo No. 1" to Heat Stress. Animals (Basel) 2024; 14:497. [PMID: 38338140 PMCID: PMC10854496 DOI: 10.3390/ani14030497] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
The innate immunity of marine bivalves is challenged upon exposure to heat stress, especially with increases in the frequency and intensity of heat waves. TLR4 serves a classical pattern recognition receptor in recognizing pathogenic microorganisms and activating immune responses. In this study, three genes, HMTLR4, HMMyD88 and HMTRAF6, were characterized as homologs of genes in the TLR4-MyD88 signaling pathway in the selected scallop strain "Hongmo No. 1". According to RT-PCR, acute heat stress (32 °C) inhibited genes in the TLR4-MyD88 signaling pathway, and LPS stimulation-induced activation of TLR4-MyD88 signal transduction was also negatively affected at 32 °C. ELISA showed LPS-induced tumor necrosis factor alpha (TNF-α) or lysozyme (LZM) activity, but this was independent of temperature. RNA interference (RNAi) confirmed that HMTLR4 silencing suppressed the expression of its downstream gene, whether at 24 °C or at 32 °C. The level of TNF-α and the activity of LZM also decreased after injection with dsRNA, indicating a negative effect on the innate immunity of scallops. Additionally, acute heat stress affected the suppression of downstream gene expression when compared with that at 24 °C, which led us to the hypothesis that heat stress directly influences the downstream targets of HMTLR4. These results enrich the knowledge of scallop immunity under heat stress and can be beneficial for the genetic improvement of new scallop strains with higher thermotolerance.
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Affiliation(s)
- Chenyang Yue
- Guangdong Marine Invertebrates Science and Technology Innovation Center, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (K.Z.); (W.L.); (H.G.); (L.Z.); (X.S.)
- Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China
| | - Kexin Zhang
- Guangdong Marine Invertebrates Science and Technology Innovation Center, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (K.Z.); (W.L.); (H.G.); (L.Z.); (X.S.)
| | - Zhigang Liu
- Guangdong Marine Invertebrates Science and Technology Innovation Center, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (K.Z.); (W.L.); (H.G.); (L.Z.); (X.S.)
| | - Wengang Lü
- Guangdong Marine Invertebrates Science and Technology Innovation Center, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (K.Z.); (W.L.); (H.G.); (L.Z.); (X.S.)
| | - Hui Guo
- Guangdong Marine Invertebrates Science and Technology Innovation Center, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (K.Z.); (W.L.); (H.G.); (L.Z.); (X.S.)
- Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China
| | - Liqiang Zhao
- Guangdong Marine Invertebrates Science and Technology Innovation Center, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (K.Z.); (W.L.); (H.G.); (L.Z.); (X.S.)
| | - Xinyu Song
- Guangdong Marine Invertebrates Science and Technology Innovation Center, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (K.Z.); (W.L.); (H.G.); (L.Z.); (X.S.)
| | - James Kar-Hei Fang
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong 999077, China;
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Batabyal A, Rivi V, Benatti C, Blom JMC, Tascedda F, Lukowiak K. Snails go on a fast when acetylsalicylic acid comes along with heat stress: A possible effect of HSPs and serotonergic system on the feeding response. Comp Biochem Physiol C Toxicol Pharmacol 2024; 276:109805. [PMID: 38013046 DOI: 10.1016/j.cbpc.2023.109805] [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: 07/25/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023]
Abstract
A novel food followed by sickness, causes a taste-specific conditioned aversion, known as the 'Garcia effect'. We recently found that both a heat shock stressor (30 °C for 1 h - HS) and the bacterial lipopolysaccharide (LPS) can be used as 'sickness-inducing' stimuli to induce a Garcia effect in the pond snail Lymnaea stagnalis. Additionally, if snails are exposed to acetylsalicylic acid (ASA) present in aspirin tablets before the LPS injection, the formation of the Garcia effect is prevented. Here, we hypothesized that exposing snails to crushed aspirin before the HS (ASA-HS) would prevent the HS-induced 'sickness state' and - therefore -the Garcia effect. Unexpectantly, the ASA-HS procedure induced a generalized and long-lasting feeding suppression. We thus investigate the molecular effects underlying this phenomenon. While the exposure to the HS alone resulted in a significant upregulation of the mRNA levels of the Heat Shock Protein 70 (HSP 70) in snails' central ring ganglia, the ASA-HS procedure induced an even greater upregulation of HSP70, suggesting that the ASA-HS combination causes a severe stress response that inhibits feeding. Additionally, we found that the ASA-HS procedure induced a significant downregulation of the mRNA levels of genes involved with the serotoninergic system which regulates feeding in snails. Finally, the ASA-HS procedure prevented HS-induced upregulation of the mRNA levels of key neuroplasticity genes. Our study indicates that two sickness-inducing stimuli can have different physiological responses even if behavioral outcomes are similar under some learning contexts.
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Affiliation(s)
- Anuradha Batabyal
- Department of Physical and Natural Sciences, FLAME University, India; Department of Physiology and Pharmacology, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary T2N 4N1, AB, Canada.
| | - Veronica Rivi
- Dept. of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Cristina Benatti
- Dept. of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy; Centre of Neuroscience and Neurotechnology, University of Modena and Reggio Emilia, Modena, Italy
| | - Johanna M C Blom
- Centre of Neuroscience and Neurotechnology, University of Modena and Reggio Emilia, Modena, Italy; Dept. of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Fabio Tascedda
- Dept. of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy; Centre of Neuroscience and Neurotechnology, University of Modena and Reggio Emilia, Modena, Italy; CIB, Consorzio Interuniversitario Biotecnologie, Trieste, Italy
| | - Ken Lukowiak
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary T2N 4N1, AB, Canada
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Maloney E, Duffy D. Deciphering the relationship between temperature and immunity. Discov Immunol 2024; 3:kyae001. [PMID: 38567294 PMCID: PMC10917241 DOI: 10.1093/discim/kyae001] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/01/2023] [Accepted: 01/29/2024] [Indexed: 04/04/2024]
Abstract
Fever is a hallmark symptom of disease across the animal kingdom. Yet, despite the evidence linking temperature fluctuation and immune response, much remains to be discovered about the molecular mechanisms governing these interactions. In patients with rheumatoid arthritis, for instance, it is clinically accepted that joint temperature can predict disease progression. But it was only recently demonstrated that the mitochondria of stimulated T cells can rise to an extreme 50°C, potentially indicating a cellular source of these localized 'fevers'. A challenge to dissecting these mechanisms is a bidirectional interplay between temperature and immunity. Heat shock response is found in virtually all organisms, activating protective pathways when cells are exposed to elevated temperatures. However, the temperature threshold that activates these pathways can vary within the same organism, with human immune cells, in particular, demonstrating differential sensitivity to heat. Such inter-cellular variation may be clinically relevant given the small but significant temperature differences seen between tissues, ages, and sexes. Greater understanding of how such small temperature perturbations mediate immune responses may provide new explanations for persistent questions in disease such as sex disparity in disease prevalence. Notably, the prevalence and severity of many maladies are rising with climate change, suggesting temperature fluctuations can interact with disease on multiple levels. As global temperatures are rising, and our body temperatures are falling, questions regarding temperature-immune interactions are increasingly critical. Here, we review this aspect of environmental interplay to better understand temperature's role in immune variation and subsequent risk of disease.
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Affiliation(s)
- Elizabeth Maloney
- Translational Immunology Unit, Institut Pasteur, Université Paris Cité, Paris, France
- Frontiers of Innovation in Research and Education PhD Program, LPI Doctoral School, Paris, France
| | - Darragh Duffy
- Translational Immunology Unit, Institut Pasteur, Université Paris Cité, Paris, France
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Wang C, Sun D, Deng Q, Sun L, Hu L, Fang Z, Zhao J, Gooneratne R. Elephantopus scaber L. Polysaccharides Alleviate Heat Stress-Induced Systemic Inflammation in Mice via Modulation of Characteristic Gut Microbiota and Metabolites. Nutrients 2024; 16:262. [PMID: 38257155 PMCID: PMC10819175 DOI: 10.3390/nu16020262] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/07/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
Elephantopus scaber L. (ESL) is a Chinese herb that is used both as a food and medicine, often being added to soups in summer in south China to relieve heat stress (HS), but its exact mechanism of action is unknown. In this study, heat-stressed mice were gavaged with ESL polysaccharides (ESLP) at 0, 150, 300, and 450 mg/kg/d-1 (n = 5) for seven days. The gut microbiota composition, short-chain fatty acids (SCFAs), seven neurotransmitters in faeces, expression of intestinal epithelial tight junction (TJ) proteins (Claudin-1, Occludin), and serum inflammatory cytokines were measured. The low dose of ESLP (ESLL) improved the adverse physiological conditions; significantly reduced the cytokines (TNF-α, IL-1β, IL-6) and lipopolysaccharide (LPS) levels (p < 0.05); upregulated the expression of Claudin-1; restored the gut microbiota composition including Achromobacter and Oscillospira, which were at similar levels to those in the normal control group; significantly increased beneficial SCFAs like butyric acid and 5-HT levels in the faeces of heat-stressed mice; and significantly decreased the valeric acid and glutamic acid level. The level of inflammatory markers significantly correlated with the above-mentioned indicators (p < 0.05). Thus, ESLL reduced the HS-induced systemic inflammation by optimizing gut microbiota (Achromobacter, Oscillospira) abundance, increasing gut beneficial SCFAs like butyric acid and 5-HT levels, and reducing gut valeric and glutamic acid levels.
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Affiliation(s)
- Chen Wang
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (C.W.); (D.S.); (L.S.); (L.H.); (Z.F.)
| | - Dongfang Sun
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (C.W.); (D.S.); (L.S.); (L.H.); (Z.F.)
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Qi Deng
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (C.W.); (D.S.); (L.S.); (L.H.); (Z.F.)
| | - Lijun Sun
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (C.W.); (D.S.); (L.S.); (L.H.); (Z.F.)
| | - Lianhua Hu
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (C.W.); (D.S.); (L.S.); (L.H.); (Z.F.)
| | - Zhijia Fang
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (C.W.); (D.S.); (L.S.); (L.H.); (Z.F.)
| | - Jian Zhao
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia;
| | - Ravi Gooneratne
- Department of Wine, Food and Molecular Biosciences, Faculty of Agriculture and Life Sciences, Lincoln University, P.O. Box 85084, Lincoln 7647, New Zealand;
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Al-Qaisi M, Abdelqader A, Abuajamieh M, Abedal-Majed MA, Al-Fataftah ARA. Impacts of dietary betaine on rectal temperature, laying performance, metabolism, intestinal morphology, and follicular development in heat-exposed laying hens. J Therm Biol 2023; 117:103714. [PMID: 37740994 DOI: 10.1016/j.jtherbio.2023.103714] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/25/2023]
Abstract
This experiment assessed the influences of betaine (BET; 2000 mg/kg) on rectal temperature (Tr), laying performance, metabolism, intestinal morphology, and follicular development in heat-stressed hens. One-hundred and twenty-eight Hisex white hens (42wks) were housed in 4 battery cages (8 pens/cage; 4 hens/pen) and divided into 4 treatments: 1) thermoneutral (TN) environments and a control diet (TNCON), 2) TN and a diet accompanied with BET (TNBET), 3) heat stress (HS) environments and a control diet (HSCON), or 4) HS and a diet accompanied with BET (HSBET). Following acclimation (15d), hens of TNCON and TNBET remained in TN, while HSCON and HSBET hens were subjected to cyclical HS (5d; 16.9-37.5 °C). Cyclical HS increased Tr compared with TN hens (1.6 °C; P < 0.01), but supplemental BET decreased Tr (0.4 °C; P < 0.01). Relative to TN treatments, HS declined egg production, weight, and mass (18, 4.2, and 26%, respectively; P < 0.01), but BET ameliorated the egg production and mass (13.1 and 16.2%, respectively; P < 0.01). Compared with HSCON, feed conversion ratio and survival rate were improved in HSBET hens (12.3 and 6.25%, respectively; P ≥ 0.03). Relative to TN hens, HS elevated glucose and blood urea nitrogen (BUN) levels (15 and 4%, respectively; P ≤ 0.04). Supplemental BET decreased BUN levels (6.6%; P < 0.01) relative to HSCON hens. Furthermore, HS diminished jejunal villus height and villus surface area (∼27 and 35%, respectively; P < 0.01) relative to TN hens but were unaltered by BET supplementation. Relative to TN hens, HS decreased oviduct's weight, ovary's length, and ovarian primordial and primary follicles count (18, 23, 34 and 44%, respectively; P < 0.01) and caused fibrosis in shell gland (3-fold; P = 0.05). Collectively, HS impaired productivity, metabolism, intestinal architecture, and reproductive efficiency. Feeding BET reduced Tr, improved laying performance, and slightly altered metabolism but did not affect intestinal and follicular measurements in heat-stressed hens.
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Affiliation(s)
- Mohmmad Al-Qaisi
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan.
| | - Anas Abdelqader
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
| | - Mohannad Abuajamieh
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
| | - Mohamed A Abedal-Majed
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
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12
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Sampath V, Shalakhti O, Veidis E, Efobi JAI, Shamji MH, Agache I, Skevaki C, Renz H, Nadeau KC. Acute and chronic impacts of heat stress on planetary health. Allergy 2023; 78:2109-2120. [PMID: 36883412 DOI: 10.1111/all.15702] [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: 12/05/2022] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 03/09/2023]
Abstract
Heat waves are increasing in intensity, frequency, and duration causing significant heat stress in all living organisms. Heat stress has multiple negative effects on plants affecting photosynthesis, respiration, growth, development, and reproduction. It also impacts animals leading to physiological and behavioral alterations, such as reduced caloric intake, increased water intake, and decreased reproduction and growth. In humans, epidemiological studies have shown that heat waves are associated with increased morbidity and mortality. There are many biological effects of heat stress (structural changes, enzyme function disruption, damage through reactive oxygen or nitrogen species). While plants and animals can mitigate some of these effects through adaptive mechanisms such as the generation of heat shock proteins, antioxidants, stress granules, and others, these mechanisms may likely be inadequate with further global warming. This review summarizes the effects of heat stress on plants and animals and the adaptative mechanisms that have evolved to counteract this stress.
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Affiliation(s)
- Vanitha Sampath
- Sean N. Parker Center for Allergy and Asthma Research at Stanford University, California, Stanford, USA
| | - Omar Shalakhti
- Sean N. Parker Center for Allergy and Asthma Research at Stanford University, California, Stanford, USA
| | - Erika Veidis
- Center for Innovation in Global Health, Stanford University, California, Stanford, USA
| | - Jo Ann Ifeoma Efobi
- Sean N. Parker Center for Allergy and Asthma Research at Stanford University, California, Stanford, USA
| | - Mohamed H Shamji
- National Heart and Lung Institute, Imperial College London, London, UK
- NIHR Imperial Biomedical Research Centre, London, UK
| | - Ioana Agache
- Faculty of Medicine, Transylvania University, Brasov, Romania
| | - Chrysanthi Skevaki
- Institute of Laboratory Medicine, Member of the German Center for Lung Research (DZL), Philipps-University Marburg, Marburg, Germany
- German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, Marburg, Germany
| | - Harald Renz
- Institute of Laboratory Medicine, Member of the German Center for Lung Research (DZL), Philipps-University Marburg, Marburg, Germany
- German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, Marburg, Germany
- Department of Clinical Immunology and Allergology, Sechenov University, Moscow, Russia
- Kilimanjaro Christian Medical University College (KCMUCo), Moshi, Tanzania
| | - Kari C Nadeau
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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Zan GX, Qin YC, Xie WW, Gao CQ, Yan HC, Wang XQ, Zhou JY. Heat stress disrupts intestinal stem cell migration and differentiation along the crypt-villus axis through FAK signaling. Biochim Biophys Acta Mol Cell Res 2023; 1870:119431. [PMID: 36632926 DOI: 10.1016/j.bbamcr.2023.119431] [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] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
During heat stress (HS), the intestinal epithelium suffers damage due to imbalance of tissue homeostasis. However, the specific mechanism by which intestinal stem cells (ISCs) migrate and differentiate along the crypt-villus axis to heal lesions upon insult is unclear. In our study, C57BL/6 mice and IPEC-J2 cells were subjected to normal ambient conditions (25 °C for 7 days in vivo and 37 °C for 18 h in vitro) or 41 °C. The results showed that HS impaired intestinal morphology and barrier function. The numbers of ISCs (SOX9+ cells), mitotic cells (PCNA+ cells), and differentiated cells (Paneth cells marked by lysozyme, absorptive cells marked by Villin, goblet cells marked by Mucin2, enteroendocrine cells marked by Chromogranin A, and tuft cells marked by DCAMKL1) were reduced under high temperature. Importantly, BrdU incorporation confirmed the decreased migration ability of jejunal epithelial cells exposed to 41 °C. Furthermore, intestinal organoids (IOs) expanded from jejunal crypt cells in the HS group exhibited greater growth disadvantages. Mechanistically, the occurrence of these phenotypes was accompanied by FAK/paxillin/F-actin signaling disruption in the jejunum. The fact that the FAK agonist ZINC40099027 reversed the HS-triggered inhibition of IPEC-J2 cell differentiation and migration further confirmed the dominant role of FAK in response to high-temperature conditions. Overall, the present investigation is the first to reveal a major role of FAK/paxillin/F-actin signaling in HS-induced ISC migration and differentiation along the crypt-villus axis, which indicates a new therapeutic target for intestinal epithelial regeneration after heat injuries.
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Affiliation(s)
- Geng-Xiu Zan
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Ying-Chao Qin
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Wen-Wen Xie
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Chun-Qi Gao
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Hui-Chao Yan
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Xiu-Qi Wang
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
| | - Jia-Yi Zhou
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China; HenryFok School of Biology and Agriculture, Shaoguan University, Shaoguan 512005, China.
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Abstract
Heat stress can cause tissue damage and metabolic disturbances, including intestinal and liver dysfunction, acid-base imbalance, oxidative damage, inflammatory response, and immune suppression. Serious cases can lead to heatstroke, which can be life-threatening. The body often finds it challenging to counteract these adverse effects, and traditional cooling methods are limited by the inconvenience of tool portability and the difficulty of determining the cooling endpoint. Consequently, more research was conducted to prevent and mitigate the negative effect of heat stress via nutritional intervention. This article reviewed the pathological changes and altered metabolic mechanisms caused by heat stress and discussed the protein (amino acid), vitamin, trace element, and electrolyte action pathways and mechanisms to mitigate heat stress and prevent heat-related disease. The main food sources for these nutrients and the recommended micronutrient supplementation forms were summarized to provide scientific dietary protocols for special populations.
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Affiliation(s)
- Xinwei Chen
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - Wanlu Liu
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - He Li
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - Jian Zhang
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - Changli Hu
- Jinmailang Beverage Corporation Limited, Beijing, China
| | - Xinqi Liu
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
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Al-Qaisi M, Abedal-Majed MA, Abuajamieh M, Alnimer M, Al-Fataftah ARA, Irshaid R, Titi H, Abdelqader A. Effects of dietary betaine on body temperature indices, performance, metabolism, and hematological variables of dairy heifer calves during hot summer conditions. Vet World 2022; 15:1657-1664. [PMID: 36185518 PMCID: PMC9394152 DOI: 10.14202/vetworld.2022.1657-1664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/31/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Heat stress (HS) can negatively impact farm animal productivity and adversely affect animal welfare worldwide, placing a major financial burden on global livestock producers. Dietary betaine (trimethylglycine) has been known to have several biological functions, which may aid in offering beneficial effects on livestock productivity during HS conditions. However, information on the role of dietary betaine in heat-stressed dairy heifer calves is yet to be documented. Therefore, this study aimed to assess the effects of supplementing dietary betaine on body temperature indices, blood metabolites, productive performance, and complete blood count (CBC) (hematological indices) in hyperthermic dairy heifer calves.
Materials and Methods: In total, 14 Holstein heifer calves (4.0 ± 0.9 months old) were individually housed and randomly allocated to one of two dietary treatments: (1) a control diet (CON; n = 7) and (2) a control diet complemented with 21 g/d of natural betaine (BET; n = 7) top-dressed once daily. The experiment lasted for 28 d, during which all animals were subjected to natural cyclic HS conditions (26.1–39.2°C; 73.2–84.0 temperature–humidity index). Rectal temperature (RT) and respiration rate (RR) were measured twice daily (0700 and 1500 h), whereas dry matter intake (DMI) was measured once daily (0800 h). In addition, blood samples (collected from the jugular vein) were analyzed for metabolites and CBC on days 7, 14, 21, and 28.
Results: Relative to CON, BET supplementation was able to decrease RT on day 23 of the experiment (p = 0.04). Alternatively, RR was similar between the dietary treatments (p = 0.73). Feeding BET did not affect DMI compared with CON during HS conditions (p = 0.48). Furthermore, compared with CON, BET supplementation did not change leukocytes, neutrophils, lymphocytes, and hematocrit levels during HS conditions (p ≥ 0.17). However, a post hoc analysis indicated that hematocrit levels were decreased in BET-fed calves on day 7 of the study compared with CON calves during HS conditions (p = 0.05). Moreover, circulating glucose, albumin, and triglycerides were found to be similar between dietary treatments (p ≥ 0.55).
Conclusion: BET supplementation slightly reduced RT and circulating hematocrit but did not affect other metrics in this HS experiment. More research into the effects of different doses of dietary BET on dairy heifer calves is needed.
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Affiliation(s)
- Mohmmad Al-Qaisi
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Mohamed A. Abedal-Majed
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Mohannad Abuajamieh
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Mufeed Alnimer
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | | | - Rabie Irshaid
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Hosam Titi
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Anas Abdelqader
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
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Videla EA, Tortone SM, Marin RH, Nazar FN. Age matters: Differential effects of the exposure to elevated environmental temperatures on representative variables of the immune system in juvenile and adult female Japanese quail. J Therm Biol 2022; 107:103257. [DOI: 10.1016/j.jtherbio.2022.103257] [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] [Received: 06/01/2021] [Revised: 05/04/2022] [Accepted: 05/17/2022] [Indexed: 11/30/2022]
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