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Subclinical hypothyroidism in the infertile female population: a guideline. Fertil Steril 2024; 121:765-782. [PMID: 38163620 DOI: 10.1016/j.fertnstert.2023.12.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 12/28/2023] [Indexed: 01/03/2024]
Abstract
There is controversy regarding whether to treat subtle abnormalities of thyroid function in infertile female patients. This guideline document reviews the risks and benefits of treating subclinical hypothyroidism in female patients with a history of infertility and miscarriage, as well as obstetric and neonatal outcomes in this population.
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Liu R, Liu Q, Xu S, Mei R. Mood instability and low back pain: a mendelian randomization study. Front Neurol 2023; 14:1252329. [PMID: 37786864 PMCID: PMC10541504 DOI: 10.3389/fneur.2023.1252329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 08/29/2023] [Indexed: 10/04/2023] Open
Abstract
Objective Low back pain is a prevalent and debilitating condition worldwide, with significant implications for individuals' quality of life and productivity. The aim of this study was to assess the relationship between mood instability and the risk of developing chronic low back pain, using a rigorously designed mendelian randomization methodology. Method The study incorporated both univariate and multivariate mendelian randomization to analysis the causal relationship between mood instability and the risk of developing chronic low back pain. The data on mood instability from the Integrative Epidemiology Unit (IEU) opened Genome-Wide Association Studies (GWAS) project (IEU-opened GWAS project). Data on low back pain were collected from two sources: One source is the IEU open GWAS project (discovery data). Another source is a GWAS meta-analysis (replication data). Inverse variance weighted method, weighted median method, MR-Egger regression, and mendelian randomization pleiotropy residual sum and outlier method were used for mendelian randomization analysis. Result The univariable mendelian randomization analysis shows a statistically significant correlation between mood instability and the risk of low back pain. Several methods were performed, including inverse variance weighting (discovery data: odds ratio = 3.544, 95% confidence interval = 1.785-7.039, p = 0.000; replication data: odds ratio = 3.167, 95% confidence interval = 2.476-4.052, p = 0.000), MR-Egger (discovery data: odds ratio = 7.178, 95% confidence interval = 0.057-909.525, p = 0.429; replication data: odds ratio = 2.262, 95% confidence interval = 0.580-8.825, p = 0.246), weighted median (discovery data: odds ratio = 2.730, 95% confidence interval = 1.112-6.702, p = 0.028; replication data: odds ratio = 3.243, 95% confidence interval = 2.378-4.422, p = 0.000), MR-PRESSO (discovery data: odds ratio = 3.544, 95% confidence interval = 1.785-7.039, p = 0.001; replication data: odds ratio = 3.167, 95% confidence interval = 2.476-4.052, p = 0.000) methods. The results were consistent across these methods. The results obtained from discovery data are consistent with those obtained from discovery data. In the multivariable mendelian randomization, after adjusting for various covariates such as body mass index, current tobacco smoking, alcohol intake frequency, Total body bone mineral density, and vigorous physical activity, there is a consistent correlation between mood instability and chronic low back pain. Conclusion This study provides robust evidence supporting a causal relationship between mood instability and the development of low back pain. Our findings suggest that addressing mood instability may play a crucial role in prevention and management strategies for individuals experiencing low back pain.
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Affiliation(s)
- Renyang Liu
- Department of Orthopaedics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
- Center for Clinical Evidence-Based and Translational Medicine, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
| | - Qian Liu
- Department of Neurology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
| | - Shaoyong Xu
- Center for Clinical Evidence-Based and Translational Medicine, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
- Department of Endocrinology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
| | - Rongcheng Mei
- Department of Orthopaedics, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, China
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Zhang T, Xie Q, Wang L, Wang Y, Yan Z, Li Z, Teng Y, Xu Z, Chen Y, Pan F, Tao J, Cai J, Liang C, Pan H, Su H, Cheng J, Hu W, Zou Y. Impact of climate factors and climate-gene interaction on systemic lupus erythematosus patients' response to glucocorticoids therapy. J Clin Lab Anal 2023; 37:e24945. [PMID: 37488812 PMCID: PMC10492452 DOI: 10.1002/jcla.24945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 06/08/2023] [Accepted: 07/11/2023] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND Glucocorticoids (GCs) were the essential drugs for systemic lupus erythematosus (SLE). However, different patients differ substantially in their response to GCs treatment. Our current study aims at investigating whether climate variability and climate-gene interaction influence SLE patients' response to the therapy of GCs. METHODS In total, 778 SLE patients received therapy of GCs for a study of 12-week follow-up. The efficacy of GCs treatment was evaluated using the Systemic Lupus Erythematosus Disease Activity Index. The climatic data were provided by China Meteorological Data Service Center. Additive and multiplicative interactions were examined. RESULTS Compared with patients with autumn onset, the efficacy of GCs in patients with winter onset is relatively poor (ORadj = 1.805, 95%CIadj : 1.181-3.014, padj = 0.020). High mean relative humidity during treatment decreased the efficacy of GCs (ORadj = 1.033, 95%CIadj : 1.008-1.058, padj = 0.011), especially in female (ORadj = 1.039, 95%CIadj : 1.012-1.067, padj = 0.004). There was a significant interaction between sunshine during treatment and TRAP1 gene rs12597773 on GCs efficacy (Recessive model: AP = 0.770). No evidence of significant interaction was found between climate factors and the GR gene polymorphism on the improved GCs efficacy in the additive model. Multiplicative interaction was found between humidity in the month prior to treatment and GR gene rs4912905 on GCs efficacy (Dominant model: OR = 0.470, 95%CI: 0.244-0.905, p = 0.024). CONCLUSIONS Our findings suggest that climate variability influences SLE patients' response to the therapy of GCs. Interactions between climate and TRAP1/GR gene polymorphisms were related to GCs efficacy. The results guide the individualized treatment of SLE patients.
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Affiliation(s)
- Tingyu Zhang
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Qiaomei Xie
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Linlin Wang
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Yuhua Wang
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Ziye Yan
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Zhen Li
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Ying Teng
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Zhiwei Xu
- School of Public Health, Faculty of MedicineUniversity of QueenslandHerstonQueenslandAustralia
| | - Yangfan Chen
- Department of Rheumatology and ImmunologyThe First Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina
| | - Faming Pan
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Jinhui Tao
- Department of Rheumatology and ImmunologyThe First Affiliated Hospital of University of Science and Technology of ChinaHefeiAnhuiChina
| | - Jing Cai
- Department of Rheumatology and ImmunologyThe First Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina
| | - Chunmei Liang
- Department of Laboratory Medicine, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
| | - Haifeng Pan
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Hong Su
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Jian Cheng
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
| | - Wenbiao Hu
- School of Public Health and Social WorkQueensland University of TechnologyBrisbaneQueenslandAustralia
| | - Yanfeng Zou
- Department of Epidemiology and Biostatistics, School of Public HealthAnhui Medical UniversityHefeiAnhuiChina
- The Key Laboratory of Anhui Medical Autoimmune DiseasesHefeiAnhuiChina
- Key Laboratory of Dermatology (Anhui Medical University)Ministry of EducationHefeiAnhuiChina
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Effects of Housing and Management Systems on the Growth, Immunity, Antioxidation, and Related Physiological and Biochemical Indicators of Donkeys in Cold Weather. Animals (Basel) 2022; 12:ani12182405. [PMID: 36139265 PMCID: PMC9494980 DOI: 10.3390/ani12182405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/27/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
The study was designed with a 2 × 2 factorial experiment to evaluate the effects of growth performance, immune function, antioxidant status, blood biochemical indexes, and hormone levels of donkeys in different housing and management systems in cold weather. Twenty-four male donkeys with similar body weight and age were randomly allocated into four treatment groups that were as follows: a cold-water-drinking group without a windproof facility, a lukewarm-water-drinking group without windproof facilities, a cold-water-drinking group with a windproof facility, and a lukewarm-water-drinking group with a windproof facility. The experiment lasted for 42 days. The results showed that windproof facilities increased average daily gain (ADG) and decreased average daily feed intake (ADFI) and feed-to-gain ratio (F:G) at all time periods (p < 0.01) of the experiment. Windproof facilities increased the digestibility of dry matter (DM), crude fat (CF), crude protein (CP), ash, calcium (Ca), and phosphate (P) on day 21 (p < 0.01), and increased the digestibility of DM, CF, ash, and P on day 42 (p < 0.01). The respiration rate and the skin temperature of the abdomen and legs increased (p < 0.05) and rectal temperature tended to increase (p = 0.083) by adopting windproof facilities at 07:00; the windproof facilities tended to increase the skin temperature of the ears and abdomen (p = 0.081, p = 0.091) at 14:00. For the blood parameters, with windproof facilities, the concentrations of total protein (TP), blood urea nitrogen (BUN), triglyceride (TG) and high-density lipoprotein cholesterol (HDL-C) increased (p < 0.05) and glucose (GLU) concentration decreased (p < 0.05) at 07:00 on day 21; the concentrations of TG and cholesterol (CHO) increased and the concentrations of TP, BUN, and GLU decreased at 07:00 on day 42 (p < 0.05). The concentrations of adrenocorticotropic hormone (ACTH), cortisol (COR), triiodothyronine (T3), and thyroxine (T4) decreased (p < 0.05) at 07:00 on day 21, and T4 concentration decreased (p < 0.05) at 07:00 on day 42. The concentrations of interleukin-4 (IL-4), immunoglobulin A (IgA), immunoglobulin G (IgG), and immunoglobulin M (IgM) increased (p < 0.01) and the concentrations of interleukin-1β (IL-1β) and tumor necrosis factor-alpha (TNF-α) decreased (p < 0.01) on days 21 and 42. The activities of total superoxide dismutase (T-SOD) and glutathione peroxidase (GPx) increased (p < 0.05), and malondialdehyde (MDA) concentration decreased (p < 0.01) on day 21; the activities of T-SOD and catalase (CAT) increased (p < 0.05), and MDA concentration decreased (p < 0.01) on day 42. However, under the conditions of this experiment, water temperature did not affect the above indexes on days 21 and 42. These results indicated that adopting windproof facilities in a cold climate can mitigate the effects of atrocious weather on the production performance of donkeys.
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Ellwanger JH, Chies JAB. Zoonotic spillover: Understanding basic aspects for better prevention. Genet Mol Biol 2021; 44:e20200355. [PMID: 34096963 PMCID: PMC8182890 DOI: 10.1590/1678-4685-gmb-2020-0355] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 04/05/2021] [Indexed: 01/07/2023] Open
Abstract
The transmission of pathogens from wild animals to humans is called “zoonotic spillover”. Most human infectious diseases (60-75%) are derived from pathogens that originally circulated in non-human animal species. This demonstrates that spillover has a fundamental role in the emergence of new human infectious diseases. Understanding the factors that facilitate the transmission of pathogens from wild animals to humans is essential to establish strategies focused on the reduction of the frequency of spillover events. In this context, this article describes the basic aspects of zoonotic spillover and the main factors involved in spillover events, considering the role of the inter-species interactions, phylogenetic distance between host species, environmental drivers, and specific characteristics of the pathogens, animals, and humans. As an example, the factors involved in the emergence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) pandemic are discussed, indicating what can be learned from this public health emergency, and what can be applied to the Brazilian scenario. Finally, this article discusses actions to prevent or reduce the frequency of zoonotic spillover events.
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Affiliation(s)
- Joel Henrique Ellwanger
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Programa de Pós-Graduação em Genética e Biologia Molecular, Laboratório de Imunobiologia e Imunogenética, Porto Alegre, RS, Brazil
| | - José Artur Bogo Chies
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Programa de Pós-Graduação em Genética e Biologia Molecular, Laboratório de Imunobiologia e Imunogenética, Porto Alegre, RS, Brazil
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Du J, He Z, Xu M, Qu X, Cui J, Zhang S, Zhang S, Li H, Yu Z. Brown Adipose Tissue Rescues Bone Loss Induced by Cold Exposure. Front Endocrinol (Lausanne) 2021; 12:778019. [PMID: 35126308 PMCID: PMC8811040 DOI: 10.3389/fendo.2021.778019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 12/27/2021] [Indexed: 12/11/2022] Open
Abstract
Cold temperature activates the sympathetic nervous system (SNS) to induce bone loss by altering bone remodeling. Brown adipose tissue (BAT) is influenced by the SNS in cold environments. Many studies have confirmed a positive relationship between BAT volume and bone mass, but the influence and mechanism of BAT on bone in vivo and in vitro is still unknown. Two-month-old C57/BL6j male mice were exposed to cold temperature (4°C) to induce BAT generation. BAT volume, bone remodeling and microstructure were assessed after 1 day, 14 days and 28 days of cold exposure. CTX-1, P1NP and IL-6 levels were detected in the serum by ELISA. To determine the effect of BAT on osteoclasts and osteoblasts in vitro, brown adipocyte conditional medium (BAT CM) was collected and added to the differentiation medium of bone marrow-derived macrophages (BMMs) and bone marrow mesenchymal stem cells (BMSCs). Micro-CT results showed that the bone volume fraction (BV/TV, %) significantly decreased after 14 days of exposure to cold temperature but recovered after 28 days. Double labeling and TRAP staining in vivo showed that bone remodeling was altered during cold exposure. BAT volume enlarged after 14 days of cold stimulation, and IL-6 increased. BAT CM promoted BMSC mineralization by increasing osteocalcin (Ocn), RUNX family transcription factor 2 (Runx2) and alkaline phosphatase (Alp) expression, while bone absorption was inhibited by BAT CM. In conclusion, restoration of bone volume after cold exposure may be attributed to enlarged BAT. BAT has a beneficial effect on bone mass by facilitating osteogenesis and suppressing osteoclastogenesis.
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Affiliation(s)
- Jingke Du
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Knee Surgery Department of the Institute of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
| | - Zihao He
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Arthritis Clinic and Research Center, Peking University People’s Hospital, Peking University, Beijing, China
| | - Mingming Xu
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinhua Qu
- Department of Bone and Joint Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Junqi Cui
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuangyan Zhang
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuhong Zhang
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hanjun Li
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Zhifeng Yu, ; Hanjun Li,
| | - Zhifeng Yu
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Zhifeng Yu, ; Hanjun Li,
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Zhou HJ, Kong LL, Zhu LX, Hu XY, Busye J, Song ZG. Effects of cold stress on growth performance, serum biochemistry, intestinal barrier molecules, and adenosine monophosphate-activated protein kinase in broilers. Animal 2020; 15:100138. [PMID: 33573943 DOI: 10.1016/j.animal.2020.100138] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 11/01/2020] [Accepted: 11/09/2020] [Indexed: 11/19/2022] Open
Abstract
The homeostasis dysfunctions caused by cold stress remain a threat to intestinal health, particularly for young broiler chickens. We hypothesized that adenosine monophosphate-activated protein kinase (AMPK) was involved in the regulation of cold stress on intestinal health. This study aimed to examine the effect of cold stress for 72 h on growth performance, serum biochemistry, intestinal barrier molecules, and AMPK in broilers. A total of 144 10-day-old male Arbor Acres broilers were subjected to temperature treatments (control 28 ± 1 °C vs cold stress 16 ± 1 °C) for 72 h. Growth performance was monitored, serum was collected for the analysis of physiological parameters, and jejunal mucosa was sampled for the determination of tight junction (TJ) proteins, heat shock proteins, and AMPK signaling molecules. Results showed that 72 h cold treatment reduced average BW gain and increased the feed conversion ratio of the broilers (P < 0.05). Cold stress for 72 h increased blood endotoxin, aspartate aminotransferase, glucose, and low-density lipoprotein cholesterol levels (P < 0.05). Moreover, 72 h cold treatment up-regulated jejunal Occludin, zonula occludin 1, inducible nitric oxide synthase, heat shock factor 1, and AMPKα1 gene expression (P < 0.05) but had no obvious effect on total AMPK protein expression (P > 0.05). In conclusion, cold stress significantly reduced the growth performance of broiler chickens. The intestinal barrier function might be impaired, and enhanced bacterial translocation might occur. The unregulated gene expression of TJ proteins implied the remodeling of intestinal barrier. The change of AMPK suggested the possible relationship between intestinal energy metabolism and barrier function under cold stress.
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Affiliation(s)
- H J Zhou
- Department of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China
| | - L L Kong
- Department of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China
| | - L X Zhu
- College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
| | - X Y Hu
- Department of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China
| | - J Busye
- Division Animal and Human Health Engineering, Department of Biosystems, KU Leuven, Kasteelpark Arenberg 30, 3001 Leuven, Belgium
| | - Z G Song
- Department of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, China.
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Mezzetti M, Bionaz M, Trevisi E. Interaction between inflammation and metabolism in periparturient dairy cows. J Anim Sci 2020; 98:S155-S174. [PMID: 32810244 DOI: 10.1093/jas/skaa134] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 04/24/2020] [Indexed: 12/13/2022] Open
Affiliation(s)
- Matteo Mezzetti
- Department of Animal Sciences, Food and Nutrition (DIANA), Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Massimo Bionaz
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, OR
| | - Erminio Trevisi
- Department of Animal Sciences, Food and Nutrition (DIANA), Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, Piacenza, Italy
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Cecchinato A, Bobbo T, Ruegg PL, Gallo L, Bittante G, Pegolo S. Genetic variation in serum protein pattern and blood β-hydroxybutyrate and their relationships with udder health traits, protein profile, and cheese-making properties in Holstein cows. J Dairy Sci 2018; 101:11108-11119. [PMID: 30316608 DOI: 10.3168/jds.2018-14907] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 08/24/2018] [Indexed: 12/15/2022]
Abstract
The aim of this study was to investigate in Holstein cows the genetic basis of blood serum metabolites [i.e., total protein, albumin, globulin, albumin:globulin ratio (A:G), and blood β-hydroxybutyrate (BHB)], a set of milk phenotypes related to udder health, milk quality technological characteristics, and genetic relationships among them. Samples of milk were collected from 498 Holstein cows belonging to 28 herds. All animal welfare and milk phenotypes were assessed using standard analytical methodology. A set of Bayesian univariate and bivariate animal models was implemented via Gibbs sampling, and statistical inference was based on the marginal posterior distributions of parameters of concern. We observed a small additive genetic influence for serum albumin concentrations, moderate heritability (≥0.20) for total proteins, globulins, and A:G, and high heritability (0.37) for blood BHB. Udder health traits (somatic cell score, milk lactose, and milk pH) showed low or moderate heritabilities (0.15-0.20), whereas variations in milk protein fraction concentrations were confirmed as mostly under genetic control (heritability: 0.21-0.71). The moderate and high heritabilities observed for milk coagulation properties and curd firming modeling parameters provided confirmation that genetic background exerts a strong influence on the cheese-making ability of milk, largely due to genetic polymorphisms in the major milk protein genes. Blood BHB showed strong negative genetic correlations with globulins (-0.619) but positive correlations with serum albumin (0.629) and A:G (0.717), which suggests that alterations in the serum protein pattern and BHB blood levels are likely to be genetically related. Strong relationships were found between albumin and fat percentages (-0.894), between globulin and αS2-CN (-0.610), and, to a lesser extent, between serum protein pattern and milk technological characteristics. Genetic relationships between blood BHB and traits related to udder health and milk quality and technological characteristics were mostly weak. This study provides evidence that there is exploitable additive genetic variation for traits related to animal health and welfare and throws light on the shared genetic basis of these traits and the phenotypes related to the quality and cheese-making ability of milk.
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Affiliation(s)
- Alessio Cecchinato
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro, Padova, Italy.
| | - Tania Bobbo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro, Padova, Italy
| | - Pamela L Ruegg
- Department of Animal Science, Michigan State University, East Lansing 48824
| | - Luigi Gallo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro, Padova, Italy
| | - Giovanni Bittante
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro, Padova, Italy
| | - Sara Pegolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro, Padova, Italy
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Celi P, Cowieson A, Fru-Nji F, Steinert R, Kluenter AM, Verlhac V. Gastrointestinal functionality in animal nutrition and health: New opportunities for sustainable animal production. Anim Feed Sci Technol 2017. [DOI: 10.1016/j.anifeedsci.2017.09.012] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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11
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Fair PA, Schaefer AM, Houser DS, Bossart GD, Romano TA, Champagne CD, Stott JL, Rice CD, White N, Reif JS. The environment as a driver of immune and endocrine responses in dolphins (Tursiops truncatus). PLoS One 2017; 12:e0176202. [PMID: 28467830 PMCID: PMC5415355 DOI: 10.1371/journal.pone.0176202] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 04/06/2017] [Indexed: 11/19/2022] Open
Abstract
Immune and endocrine responses play a critical role in allowing animals to adjust to environmental perturbations. We measured immune and endocrine related markers in multiple samples from individuals from two managed-care care dolphin groups (n = 82 samples from 17 dolphins and single samples collected from two wild dolphin populations: Indian River Lagoon, (IRL) FL (n = 26); and Charleston, (CHS) SC (n = 19). The immune systems of wild dolphins were more upregulated than those of managed-care-dolphins as shown by higher concentrations of IgG and increases in lysozyme, NK cell function, pathogen antibody titers and leukocyte cytokine transcript levels. Collectively, managed-care care dolphins had significantly lower levels of transcripts encoding pro-inflammatory cytokine TNF, anti-viral MX1 and INFα and regulatory IL-10. IL-2Rα and CD69, markers of lymphocyte activation, were both lower in managed-care care dolphins. IL-4, a cytokine associated with TH2 activity, was lower in managed-care care dolphins compared to the free-ranging dolphins. Differences in immune parameters appear to reflect the environmental conditions under which these four dolphin populations live which vary widely in temperature, nutrition, veterinary care, pathogen/contaminant exposures, etc. Many of the differences found were consistent with reduced pathogenic antigenic stimulation in managed-care care dolphins compared to wild dolphins. Managed-care care dolphins had relatively low TH2 lymphocyte activity and fewer circulating eosinophils compared to wild dolphins. Both of these immunologic parameters are associated with exposure to helminth parasites which is uncommon in managed-care care dolphins. Less consistent trends were observed in a suite of hormones but significant differences were found for cortisol, ACTH, total T4, free T3, and epinephrine. While the underlying mechanisms are likely multiple and complex, the marked differences observed in the immune and endocrine systems of wild and managed-care care dolphins appear to be shaped by their environment.
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Affiliation(s)
- Patricia A. Fair
- National Oceanic and Atmospheric Administration, National Ocean Service, Center for Coastal Environmental Health & Biomolecular Research, Charleston, SC, United States of America
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, United States of America
- * E-mail: ,
| | - Adam M. Schaefer
- Harbor Branch Oceanographic Institution at Florida Atlantic University, Ft. Pierce, FL, United States of America
| | - Dorian S. Houser
- Marine Mammal Foundation, San Diego, CA, United States of America
| | - Gregory D. Bossart
- Georgia Aquarium, Atlanta, GA, United States of America
- Division of Comparative Pathology, Miller School of Medicine, University of Miami, Miami, FL, United States of America
| | - Tracy A. Romano
- Mystic Aquarium, a division of Sea Research Foundation, Mystic, CT, United States of America
| | | | | | - Charles D. Rice
- Department of Biological Sciences, Graduate Program in Environmental Toxicology, Clemson University, Clemson, SC, United States of America
| | - Natasha White
- National Oceanic and Atmospheric Administration, National Ocean Service, Center for Coastal Environmental Health & Biomolecular Research, Charleston, SC, United States of America
| | - John S. Reif
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, United States of America
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12
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Sun HJ, Xiang P, Luo J, Hong H, Lin H, Li HB, Ma LQ. Mechanisms of arsenic disruption on gonadal, adrenal and thyroid endocrine systems in humans: A review. ENVIRONMENT INTERNATIONAL 2016; 95:61-68. [PMID: 27502899 DOI: 10.1016/j.envint.2016.07.020] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/28/2016] [Accepted: 07/29/2016] [Indexed: 06/06/2023]
Abstract
Due to its toxicity as a carcinogen and wide distribution in the environment, arsenic (As) exposure in humans is of public concern globally. Many studies have manifested that As exposure induces cancers besides pathological effects in humans. Animal studies showed that chronic As exposure induces serious neurological effects. Based on recent studies, researchers proposed that As, including arsenate (AsV) and arsenite (AsIII), is also an endocrine disruptor. This review discusses the mechanisms of As toxicity on three endocrine systems including gonadal, adrenal and thyroid endocrine systems. Arsenic methylation and oxidative stress are responsible for As-induced disorders of endocrine systems, however, strong binding of AsIII to thiols also play an important role. Some studies showed AsV toxicity on endocrine systems, but mechanistic investigation is lacking. Research is needed to look into their toxicity mechanisms to help cure the illnesses caused by As-induced endocrine system disorders.
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Affiliation(s)
- Hong-Jie Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210046, China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Ping Xiang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210046, China
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210046, China
| | - Huachang Hong
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Hong-Bo Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210046, China.
| | - Lena Q Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210046, China; Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA.
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13
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Sordillo LM. Nutritional strategies to optimize dairy cattle immunity. J Dairy Sci 2016; 99:4967-4982. [PMID: 26830740 DOI: 10.3168/jds.2015-10354] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 10/25/2015] [Indexed: 01/16/2023]
Abstract
Dairy cattle are susceptible to increased incidence and severity of both metabolic and infectious diseases during the periparturient period. A major contributing factor to increased health disorders is alterations in bovine immune mechanisms. Indeed, uncontrolled inflammation is a major contributing factor and a common link among several economically important infectious and metabolic diseases including mastitis, retained placenta, metritis, displaced abomasum, and ketosis. The nutritional status of dairy cows and the metabolism of specific nutrients are critical regulators of immune cell function. There is now a greater appreciation that certain mediators of the immune system can have a reciprocal effect on the metabolism of nutrients. Thus, any disturbances in nutritional or immunological homeostasis can provide deleterious feedback loops that can further enhance health disorders, increase production losses, and decrease the availability of safe and nutritious dairy foods for a growing global population. This review will discuss the complex interactions between nutrient metabolism and immune functions in periparturient dairy cattle. Details of how either deficiencies or overexposure to macro- and micronutrients can contribute to immune dysfunction and the subsequent development of health disorders will be presented. Specifically, the ways in which altered nutrient metabolism and oxidative stress can interact to compromise the immune system in transition cows will be discussed. A better understanding of the linkages between nutrition and immunity may facilitate the design of nutritional regimens that will reduce disease susceptibility in early lactation cows.
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Affiliation(s)
- L M Sordillo
- College of Veterinary Medicine, Michigan State University, East Lansing 48824.
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Yada T, Tort L. Stress and Disease Resistance: Immune System and Immunoendocrine Interactions. FISH PHYSIOLOGY 2016. [DOI: 10.1016/b978-0-12-802728-8.00010-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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15
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Subclinical hypothyroidism in the infertile female population: a guideline. Fertil Steril 2015; 104:545-53. [DOI: 10.1016/j.fertnstert.2015.05.028] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 05/20/2015] [Indexed: 11/26/2022]
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Kim K, Suzuki K, Peake J, Ahn N, Ogawa K, Hong C, Kim S, Lee I, Park J. Physiological and leukocyte subset responses to exercise and cold exposure in cold-acclimatized skaters. Biol Sport 2014; 31:39-48. [PMID: 24917688 PMCID: PMC3994584 DOI: 10.5604/20831862.1086731] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2013] [Indexed: 12/02/2022] Open
Abstract
We investigated physiological responses and changes in circulating immune cells following exercise in cold and thermoneutral conditions. Participants were short track skaters (n=9) who were acclimatized to cold conditions, and inline skaters (n=10) who were not acclimatized. All skaters were young, and skating at a recreational level three days per week for at least one year. Using a cross-over design, study variables were measured during 60 min of submaximal cycling (65% V.O2max) in cold (ambient temperature: 5±1°C, relative humidity: 41±9%) and thermoneutral conditions (ambient temperature: 21±1°C, relative humidity: 35±5%). Heart rate, blood lactate and tympanic temperature were measured at rest, during exercise and recovery. Plasma cortisol, calprotectin and circulating blood cell numbers were measured before and after 60 min of cold or thermoneutral conditions, and during recovery from exercise. Heart rate was lower in both groups during exercise in cold versus thermoneutral conditions (P<0.05). The increase in total leukocytes during recovery was primarily due to an increase in neutrophils in both groups. The cold-acclimatized group activated neutrophils after exercise in cold exposure, whereas the non-acclimatized group activated lymphocyte and cortisol after exercise in cold exposure. Lymphocyte subsets significantly changed in both groups over time during recovery as compared to rest. Immediately after exercise in both groups, CD16+ and CD69+ cells were elevated compared to rest or before exercise in both conditions. Acclimatization to exercise in the cold does not appear to influence exercise-induced immune changes in cold conditions, with the possible exception of neutrophils, lymphocytes and cortisol concentration.
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Affiliation(s)
- K Kim
- Department of Physical Education, College of Physical Education, Keimyung University, Daegu, Korea
| | - K Suzuki
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan
| | - J Peake
- School of Human Movement Studies, University of Queensland, Brisbane, Australia
| | - N Ahn
- Department of Physical Education, College of Physical Education, Keimyung University, Daegu, Korea
| | - K Ogawa
- Research Team for Social Participation and Health Promotion, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Ch Hong
- Department of Physical Education, College of Physical Education, Keimyung University, Daegu, Korea
| | - S Kim
- Department of Physical Education, College of Physical Education, Keimyung University, Daegu, Korea
| | - I Lee
- The Center for Traditional Microorganism Resources, Keimyung University, Daegu, Korea
| | - J Park
- Department of Immunology, College of Medicine, Keimyung University, Daegu, Korea
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The effect of shearing procedures on blood levels of growth hormone, cortisol and other stress haematochemical parameters in Sarda sheep. Animal 2012; 2:606-12. [PMID: 22443577 DOI: 10.1017/s1751731108001651] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The aim of this research was to investigate how growth hormone (GH) cortisol and some haematochemical parameters could be modified by the stress caused by the stages of shearing in Sarda breed sheep. Five groups of 10 sheep each were formed. Group A, only separated from the flock; Group B, only tied; Group C, both tied and shorn (animals in these three groups were ewe lambs shorn for the first time); Group D, adult females both tied and shorn; and Group E, adult entire males both tied and shorn (animals in these two groups had been shorn previously). Five blood samples were taken from each animal: the day before treatment (first sample); at the start of the treatment (second sample); in the middle of shearing for Groups C, D and E, 10 min after separation in Group A and 10 min after tying in Group B (third sample); at the end of treatment (fourth sample); and on the day after treatment (fifth sample). Plasma GH levels showed a decrease (P < 0.01) in Groups A, B, C and D during treatment (third and fourth samples), while Group E only at the end of shearing (fourth sample). In the third sample, the highest GH levels were recorded for Group E (P < 0.05), while it was recorded in the fourth sample for Groups A and E (P < 0.05). Cortisol levels showed a clear increase (P < 0.01) in all groups during treatment, but Group A showed a decrease in the fourth sample in comparison to the third sample. Males in the second, third and fourth sample and Group A only in the fourth sample showed lower cortisol levels when compared with the other groups (P < 0.05). Plasma glucose levels showed an increase (P < 0.01) in all groups during treatment but Groups B, C and E showed the highest values (P < 0.05). Magnesium (Mg) showed an increase in all groups in the third and fourth sample, while sodium (Na), in the same samples, only in Groups B, C and D. Potassium (K) values showed a significant decrease (P < 0.05) only in Groups C and D at the end of shearing. These results show that GH secretion is influenced by all the stress procedure: separation, tying and shearing. Shearing, even if necessary for animals, causes a significant change of the blood parameters involved in the stress response.
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Marais M, Maloney SK, Gray DA. Ambient temperature modulates the magnitude of LPS-induced fevers in Pekin ducks. J Therm Biol 2011. [DOI: 10.1016/j.jtherbio.2010.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Matsumoto M, Huang HJ. Induction of short-term, nonspecific immunity against Escherichia coli infection in chickens is suppressed by cold stress or corticosterone treatment. Avian Pathol 2010; 29:227-32. [DOI: 10.1080/03079450050045486] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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20
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Graham TW, Breher JE, Farver TB, Cullor JS, Kehrli ME, Oberbauer AM. Biological markers of neonatal calf performance: the relationship of insulin-like growth factor-I, zinc, and copper to poor neonatal growth. J Anim Sci 2010; 88:2585-93. [PMID: 20382870 DOI: 10.2527/jas.2009-2610] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Raising a heifer calf to reproductive age represents an enormous cost to the producer. Poor neonatal growth exacerbates the costs incurred for rearing, and use of blood variables that may be associated with poorly growing calves may offer predictive value for growth and performance. Thus, the principal objective of the present study was to describe changes in serum IGF-I, zinc, and copper from birth to 90 d in Holstein calves, while accounting for sex and twin status, in poorly growing calves and calves growing well. A second objective was to test the hypothesis that an association exists between these serum variables and morphometric indicators of growth. Measurements of BW, length, and height were recorded at birth and at 30, 60, and 90 d of age. Jugular blood (12 mL) was collected from each calf on d 1 to determine serum total protein, serum IgG, packed cell volume, serum zinc, serum copper, serum IGF-I, and CD18 genotype for bovine leukocyte adhesion deficiency; serum zinc, serum copper, and serum IGF-I (predictor variables) were also determined for each calf on d 2 through 10 and on d 30, 60, and 90. Stepwise multiple regression and logistic regression analyses were used to examine the relationships between the predictor variables and the dependent variables (BW, height, and length at d 30, 60, and 90 of life). Birth weight, sex, serum IGF-I (at all ages), serum copper, and the serum copper-to-zinc ratio were associated, to varying degrees, with the dependent growth variables. Birth weight was consistently the dominant predictor. In conclusion, these results suggest that lighter birth weight, reduced serum IGF-I, and inflammation may be important causes of poor growth in neonatal Holstein dairy calves.
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Affiliation(s)
- T W Graham
- Veterinary Consulting Services, Davis, CA 95618, USA.
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21
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Borghetti P, Saleri R, Mocchegiani E, Corradi A, Martelli P. Infection, immunity and the neuroendocrine response. Vet Immunol Immunopathol 2009; 130:141-62. [PMID: 19261335 PMCID: PMC7112574 DOI: 10.1016/j.vetimm.2009.01.013] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2008] [Revised: 01/17/2009] [Accepted: 01/27/2009] [Indexed: 12/11/2022]
Abstract
The Central Nervous (CNS) and Immune Systems (IS) are the two major adaptive systems which respond rapidly to numerous challenges that are able to compromise health. The defensive response strictly linking innate to acquired immunity, works continuously to limit pathogen invasion and damage. The efficiency of the innate response is crucial for survival and for an optimum priming of acquired immunity. During infection, the immune response is modulated by an integrated neuro-immune network which potentiates innate immunity, controls potential harmful effects and also addresses metabolic and nutritional modifications supporting immune function. In the last decade much knowledge has been gained on the molecular signals that orchestrate this integrated adaptive response, with focus on the systemic mediators which have a crucial role in driving and controlling an efficient protective response. These mediators are also able to signal alterations and control pathway dysfunctions which may be involved in the persistence and/or overexpression of inflammation that may lead to tissue damage and to a negative metabolic impact, causing retarded growth. This review aims to describe some important signalling pathways which drive bidirectional communication between the Immune and Nervous Systems during infection. Particular emphasis is placed on pro-inflammatory cytokines, immunomodulator hormones such as Glucocorticoids (GCs), Growth hormone (GH), Insulin-like Growth Factor-1 (IGF-1), and Leptin, as well as nutritional factors such as Zinc (Zn). Finally, the review includes up-to-date information on this neuroimmune cross-talk in domestic animals. Data in domestic animal species are still limited, but there are several exciting areas of research, like the potential interaction pathways between mediators (i.e. cytokine-HPA regulation, IL-6-GCS-Zn, cytokines-GH/IGF-1, IL-6-GH-Leptin and thymus activity) that are or could be promising topics of future research in veterinary medicine.
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22
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Bowden TJ. Modulation of the immune system of fish by their environment. FISH & SHELLFISH IMMUNOLOGY 2008; 25:373-383. [PMID: 18562213 DOI: 10.1016/j.fsi.2008.03.017] [Citation(s) in RCA: 200] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Revised: 03/18/2008] [Accepted: 03/23/2008] [Indexed: 05/26/2023]
Abstract
The environment impacts on the physiology and psychology of animals in a wide variety of ways. If we can develop an understanding of how different environmental factors affect different processes we may be able to predict these changes and avoid or moderate deleterious events and the resultant changes in fish health and disease resistance. In this review, advances in the understanding of environmental impacts were identified in relation to specific areas of immune function. The trends, where they can be identified, showed that increases in light, temperature, salinity, oxygen, pH or particulates results in a general increase in immune function.
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Affiliation(s)
- Timothy J Bowden
- Department of Zoology, University of Aberdeen, Tillydrone Avenue, Aberdeen AB24 2TZ, UK.
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Zhang Z, Fang Q, Wang J. Involvement of macrophage colony-stimulating factor (M-CSF) in the function of follicular granulosa cells. Fertil Steril 2008; 90:749-54. [PMID: 17880962 DOI: 10.1016/j.fertnstert.2007.06.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2007] [Revised: 06/26/2007] [Accepted: 06/28/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To evaluate the role of macrophage colony-stimulating factor (M-CSF) in steroidogenesis by luteinized granulosa cells (GCs) and to examine the effect of FSH, E(2), and P on the production of M-CSF by GCs. DESIGN In vitro experimental study. SETTING University hospital with an IVF-intracytoplasmic sperm injection program. PATIENT(S) Forty infertile women who underwent intracytoplasmatic sperm injection. INTERVENTION(S) The GCs obtained from these patients during oocyte retrieval were cultured and then treated with different concentrations of M-CSF, FSH, E(2), or P for 72 hours. MAIN OUTCOME MEASURE(S) The M-CSF concentrations were determined by ELISA, and the concentrations of E(2) and P were measured by enzyme immunoassay. RESULT(S) The M-CSF secretion of GCs was enhanced by FSH or E(2) in vitro in a dose-dependent manner but was unaffected by P. On the other hand, M-CSF elicited a production of E(2) and P by GCs in a dose-dependent manner in the presence or absence of FSH. CONCLUSION(S) The results suggest that the growth factor M-CSF might have an important role in ovarian function.
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Affiliation(s)
- Zhifen Zhang
- Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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Moens LN, van der Ven K, Van Remortel P, Del-Favero J, De Coen WM. Gene expression analysis of estrogenic compounds in the liver of common carp (Cyprinus carpio) using a custom cDNA microarray. J Biochem Mol Toxicol 2008; 21:299-311. [PMID: 17912697 DOI: 10.1002/jbt.20190] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Exposure to a variety of compounds with estrogenic activity has been shown to interfere with normal developmental and reproductive processes in various vertebrate species. The aim of this study was to determine the transcriptional profile of the natural estrogen, 17 beta-estradiol, and three synthetic estrogenic compounds (4-nonylphenol, bisphenol A, ethinylestradiol) in the liver of common carp, using a custom cDNA microarray. For that purpose, fish were aqueously exposed to three concentrations of each chemical for 24 or 96 h. Microarray analysis revealed that a total of 185 different gene transcripts were differentially expressed following exposure to at least one of the estrogen(-like) concentrations. We were able to identify a common set of 28 gene fragments, whose expression was significantly modified in the same way by the three xenoestrogens and 17 beta-estradiol. Although several of these gene expression effects corroborated past literature data, we also discovered some novel target genes of (xeno)estrogen exposure, providing interesting insights into the molecular basis of estrogenic effects. In addition, each of the four compounds induced gene expression changes that were not, or only partially, shared by the other chemicals, suggesting that not all chemicals with estrogenic activity act alike. These results demonstrate the potential of our custom Cyprinus carpio microarray to detect common estrogen-like activity as well as to identify unique compound-associated effects of (estrogenic) endocrine disruptors in fish.
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Affiliation(s)
- Lotte N Moens
- Department of Biology, Laboratory for Ecophysiology, Biochemistry and Toxicology, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
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Yada T. Growth hormone and fish immune system. Gen Comp Endocrinol 2007; 152:353-8. [PMID: 17382328 DOI: 10.1016/j.ygcen.2007.01.045] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2006] [Revised: 12/26/2006] [Accepted: 01/01/2007] [Indexed: 11/23/2022]
Abstract
This paper reviews the immunomodulatory effects, extra-pituitary expression and paracrine action of growth hormone (GH), and a possible role of GH/insulin-like growth factor-I (IGF-I) axis in the immune system of teleost fish. In some euryhaline fish, the activation of immune functions observed during seawater acclimation appears to be associated with the osmoregulatory action of GH. Administration of GH enhances many aspects of immune functions including non-specific defences; cytotoxic, phagocytic, haemolytic and lysozyme activities. GH also activates immunoglobulin production as a specific defense and increases ceruloplasmin levels as an acute-phase protein. The GH gene is also expressed in many extra-pituitary tissues of fish, especially in lymphoid organs and cells. Several endocrine factors appear to act on immune function through modification of GH secretion from fish leucocytes. Exposure of phagocytic leucocytes of tilapia to IGF-I in vitro stimulated proliferation and superoxide production associated with phagocytosis. Exposure to GH had no significant effect on IGF-I secretion from tilapia leucocytes, despite of the fact that they secreted significant amounts of IGF-I. GH and IGF-I appear to act in a paracrine manner in the regulation of the teleostean immune system. Further studies are necessary to characterize the interactions of GH with other endocrine and paracrine factors.
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Affiliation(s)
- Takashi Yada
- Freshwater Fisheries Research Division, National Research Institute of Fisheries Science, Nikko, Tochigi 321-1661, Japan.
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Wei L, Sun S, Xu CH, Zhang J, Xu Y, Zhu H, Peh SC, Korteweg C, McNutt MA, Gu J. Pathology of the thyroid in severe acute respiratory syndrome. Hum Pathol 2006; 38:95-102. [PMID: 16996569 PMCID: PMC7112059 DOI: 10.1016/j.humpath.2006.06.011] [Citation(s) in RCA: 149] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 06/12/2006] [Accepted: 06/14/2006] [Indexed: 01/21/2023]
Abstract
The severe acute respiratory syndrome (SARS) epidemic started in November 2002 and spread worldwide. The pathological changes in several human organs of patients with SARS have been extensively described. However, to date, little has been reported about the effects of this infection on the thyroid gland. Femoral head necrosis and low serum triiodothyronine and thyroxine levels, commonly found in patients with SARS, raise the possibility of thyroid dysfunction. We have undertaken this study to evaluate for any potential injury to the thyroid gland caused by SARS on tissue samples obtained from 5 SARS autopsies. The terminal deoxynucleotidyl transferase-mediated dUPT nick end–labeling assay was performed to identify apoptotic cells. The follicular epithelium was found to be damaged with large numbers of cells exfoliated into the follicle. The terminal deoxynucleotidyl transferase-mediated dUPT nick end–labeling assay demonstrated many cells undergoing apoptosis. Follicular architecture was altered and showed distortion, dilatation, and collapse. No distinct calcitonin-positive cells were detectable in the SARS thyroids. In conclusion, both parafollicular and follicular cells were injured. This may provide an explanation both for low serum triiodothyronine and thyroxine levels and the osteonecrosis of the femoral head associated with patients with SARS. Apoptosis may play a role in the pathogenesis of SARS associated coronavirus infection in the thyroid gland.
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Affiliation(s)
- Lan Wei
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking (Beijing) University, 100083 Beijing, China
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Positive correlation between helpers at nest and nestling immune response in a cooperative breeding bird. Behav Ecol Sociobiol 2006. [DOI: 10.1007/s00265-006-0179-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Auchtung TL, Dahl GE. Prolactin Mediates Photoperiodic Immune Enhancement: Effects of Administration of Exogenous Prolactin on Circulating Concentrations, Receptor Expression, and Immune Function in Steers1. Biol Reprod 2004; 71:1913-8. [PMID: 15286038 DOI: 10.1095/biolreprod.104.031005] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Changes in photoperiod can significantly impact the physiology of many species. For example, we have observed an improvement in cellular immune function in cattle on short-day photoperiod (SDPP) relative to long-day photoperiod (LDPP). In addition, prolactin (PRL) and PRL receptor (PRL-R) are affected by photoperiod management. Our hypothesis is that the inverse relationship observed between PRL and PRL-R mRNA expression during photoperiod treatment alters the sensitivity of the animal to PRL, thereby affecting the changes in their cellular immune function. The objective of this study was to determine the effects of exogenous PRL on photoperiodic-mediated immune responses. Eight Holstein steers received each of four treatments: LDPP (16L:8D), SDPP (8L:D), SDom (SDPP plus PRL via osmotic minipump for 10 days), and SDinj (SDPP plus PRL via 3x daily injections for 10 days). Steers on SDPP had decreased PRL relative to the other treatments. Expression of PRL-R mRNA was increased in SDPP animals relative to LDPP, SDom, and SDinj. Prior to PRL treatment, SDPP animals had greater lymphocyte proliferation and neutrophil chemotaxis relative to LDPP animals. Following PRL treatment, cellular immune function of SDom and SDinj animals was reduced to the level of LDPP animals. Addition of PRL to the in vitro lymphocyte proliferation did not alter response of LDPP animals but increased proliferation of lymphocytes from SDPP animals. The results of these experiments suggest that an animal's responsiveness to PRL correlate to changes in cellular immune function that occur with photoperiod manipulation.
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Affiliation(s)
- T L Auchtung
- Department of Animal Sciences, University of Illinois, Urbana, Illinois 61801, USA
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Ting STL, Earley B, Crowe MA. Effect of cortisol infusion patterns and castration on metabolic and immunological indices of stress response in cattle. Domest Anim Endocrinol 2004; 26:329-49. [PMID: 15063925 DOI: 10.1016/j.domaniend.2003.12.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2003] [Accepted: 12/11/2003] [Indexed: 11/19/2022]
Abstract
This study tested the hypotheses that: (1) either acute stress induced by Burdizzo castration, or cortisol infusion would modulate plasma glucose, insulin and growth hormone (GH) concentrations; and (2) immune modulation induced by cortisol would be dependent on the pattern, intensity and duration of circulating cortisol concentrations. Fifty 9.2-month-old Holstein x Friesian bulls (232 +/- 2.0 kg) were blocked by weight and randomly assigned to one of five treatments (n = 10 per treatment): (1) sham handled control; (2) Burdizzo castration; (3) hydrocortisone infusion to mimic the castration-induced secretion pattern of cortisol; (4) hourly pulse infusion of hydrocortisone; and (5) sustained infusion of hydrocortisone for 8h. Blood samples were collected intensively on day 0, and weekly from days 1 to 35. Castration acutely increased plasma cortisol, GH and haptoglobin concentrations, suppressed lymphocyte in vitro interferon-gamma (IFN-gamma) production, but had no effect on plasma glucose and insulin concentrations. Cortisol infusion to simulate the castration-induced secretion pattern of cortisol, and pulse infusion of cortisol did not suppress the IFN-gamma production. A sustained infusion of cortisol resulted in the transient suppression of IFN-gamma production. Moreover, the sustained cortisol infusion resulted in increased plasma glucose, insulin and GH concentrations. The overall 14-day feed intakes and 35-day growth rates were not affected by treatments. In conclusion, cortisol infusion to induce immune suppression in vivo occurred only at pharmacological doses. Within physiological ranges, cortisol was not associated with the suppression of immune function, indicating that during castration cortisol per se is not responsible for the suppression of in vitro IFN-gamma production.
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Affiliation(s)
- S T L Ting
- Teagasc, Grange Research Centre, Dunsany, County Meath, Ireland
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31
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Wrona D, Jurkowski M, Luszawska D, Tokarski J, Trojniar W. The effects of lateral hypothalamic lesions on peripheral blood natural killer cell cytotoxicity in rats hyper- and hyporesponsive to novelty. Brain Behav Immun 2003; 17:453-61. [PMID: 14583237 DOI: 10.1016/s0889-1591(03)00065-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Individual variability in the central control of the cellular immune responses is the main subject of the study. Previously, it was found that destruction of the lateral hypothalamus (LH) produced long-term depression of the cytotoxicity of NK cells (NKCC) and their number (LGL). In the present experiment we compared changes in the peripheral blood NKCC, LGL number, as well as leukocyte and lymphocyte number, their mitogenic activity and plasma corticosterone level evoked by electrolytic LH lesions in rats which were categorized as either high (HR) and low (LR) responders according to their locomotor response to a new environment. It was found that: (1) before the lesion NKCC (measured by 51Cr release assay) was higher in the HRs than in LRs; (2) LH damage caused a drop in NKCC and LGL number (21st postlesion day) preceded by a transient enhancement (5th postlesion day) significant for HRs only. As a result of a greater decrease in the HRs than LRs the baseline differences between groups disappeared by 21st postlesion day; (3) NKCC and LGL depression was not accompanied by changes in lytic activity of a single NK cell (agarose assay) which indicates that NKCC decrease concerned the population level and was dependent on LGL redistribution and/or recycling rate; (4) on the 21st postlesion day there was a significant leuko- and lymphopenia in the lesioned groups both HRs and LRs; (5) proliferative lymphocyte response to PWM (colorimetric assay) and plasma corticosterone level were not affected either by the motility level or by the lesion. The results emphasize the importance of individual differences in behavioral reactivity for NKCC regulation and a possible involvement of LH in the mechanism which connects high locomotor activity with stimulation of NKCC.
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Affiliation(s)
- Danuta Wrona
- Department of Animal Physiology, University of Gdańsk, Kładki 24, Gdańsk 80-822, Poland.
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Waldron MR, Nishida T, Nonnecke BJ, Overton TR. Effect of Lipopolysaccharide on Indices of Peripheral and Hepatic Metabolism in Lactating Cows. J Dairy Sci 2003; 86:3447-59. [PMID: 14672174 DOI: 10.3168/jds.s0022-0302(03)73949-6] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Four multiparous lactating cows (175 to 220 d in milk [DIM]) were used in a 4 x 4 Latin square design to assess the effects of four doses (0.0, 0.5, 1.0, and 1.5 microg/kg of body weight) of lipopolysaccharide (LPS; Escherichia coli 0111:B4) on performance and plasma metabolite and hormone concentrations. In addition, effects of immune activation on in vitro hepatic metabolic capacity were evaluated in 12 multiparous lactating cows (150 to 220 DIM) infused with 0 (n = 6), 1.0 (n = 4) or 2.0 (n = 2) microg of LPS/kg. Milk production and DMI decreased linearly with LPS dose for 24 h after LPS infusion. Overall mean plasma tumor necrosis factor-alpha, insulin, glucagon, and cortisol concentrations increased linearly with LPS dose, and plasma beta-hydroxybutyrate decreased linearly by dose after LPS infusion. Infusion of LPS decreased the insulin:glucagon molar ratio, but did not affect plasma concentrations of growth hormone, insulin-like growth factor-1, leptin, or L-(+)-lactate. Plasma concentrations of glucose tended to increase initially and subsequently decrease, and there was a quadratic tendency for increased plasma nonesterified fatty acid concentrations after LPS administration. In vitro hepatic capacity for conversion of [1-(14)C]L-(+)-lactate and [1-(14)C]palmitate, but not [1-(14)C]propionate or [1-(14)C]L-alanine, to CO2 increased after LPS administration. Hepatic capacity to convert [1-(14)C]propionate to glucose tended to increase, but neither esterification nor the conversion of palmitate to acid soluble products was altered by LPS. The LPS infusion resulted in significant changes of endocrine mediators responsible for regulation of energy metabolism of lactating cows and tended to alter subsequent in vitro hepatic metabolic capacity.
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Affiliation(s)
- M R Waldron
- Department of Animal Science, Cornell University, Ithaca 14853, USA
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Elsasser TH. Insulin-like growth factor-I: a traffic control device on the road to tissue recovery. Am J Physiol Regul Integr Comp Physiol 2003; 285:R722-3. [PMID: 12959917 DOI: 10.1152/ajpregu.00343.2003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Yada T, Nakanishi T. Interaction between endocrine and immune systems in fish. INTERNATIONAL REVIEW OF CYTOLOGY 2003; 220:35-92. [PMID: 12224552 DOI: 10.1016/s0074-7696(02)20003-0] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Diseases in fish are serious problems for the development of aquaculture. The outbreak of fish disease is largely dependent on environmental and endogenous factors resulting in opportunistic infection. Recent studies, particularly on stress response, have revealed that bidirectional communication between the endocrine and immune systems via hormones and cytokines exists at the level of teleost fish. Recently information on such messengers and receptors has accumulated in fish research particularly at the molecular level. Furthermore, it has become apparent in fish that cells of the immune system produce or express hormones and their receptors and vice versa to exchange information between the two systems. This review summarizes and updates the knowledge on endocrine-immune interactions in fish with special emphasis on the roles of such mediators or receptors for their interactions.
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Affiliation(s)
- Takashi Yada
- Nikko Branch, National Research Institute of Aquaculture, Tochigi, Japan
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35
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Abstract
Changes in day length alter several indices of immune function in Siberian hamsters. These experiments tested the hypothesis that photoperiodic changes in immune function are integrated at an organismal level as reflected by the ability to heal a cutaneous wound. Given the well-documented effects of psychological stressors on immune function, we also tested the hypothesis that photoperiod modulates the effects of acute stress on wound healing. Male hamsters were housed in long (16L:8D; LD) or short (8L:16D; SD) day lengths for 8+/-2 weeks. SD-treatment was sufficient to induce winter reproductive status. Hamsters then received a dermal punch wound. Hamsters were subjected to either 2 h of daily restraint stress or a control treatment for 3 days prior to and 5 days after wounding. Wounds were digitally photographed daily, and wound size was measured to quantify healing. Wounds of LD hamsters healed significantly faster than did those of SD hamsters. Restraint stress significantly accelerated healing in SD hamsters. The results suggest that the enhancing effects of short-term psychological stressors on immune function are apparent only when reproductive function is suppressed. In nature, enhanced wound healing coincident with the breeding season and territorial defense may be adaptive.
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Affiliation(s)
- Steven G Kinsey
- Departments of Psychology and Neuroscience, The Ohio State University, Columbus, OH 43210, USA.
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Landete-Castillejos T, García A, Gómez JA, Laborda J, Gallego L. Effects of nutritional stress during lactation on immunity costs and indices of future reproduction in Iberian red deer (Cervus elaphus hispanicus). Biol Reprod 2002; 67:1613-20. [PMID: 12390895 DOI: 10.1095/biolreprod.102.004507] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Nutrition may affect the balance between immunity and traits such as reproduction or growth. This study examines the effect of low nutrient availability on immunity indices and lactation in captive Iberian red deer. Twelve hinds and their calves were allotted to a food-restricted (50-60% daily energy requirements) or a control group just after calving. Low calorie intake exerted a greater effect on the immunity of calves than on that of hinds. Whereas no difference was found for hinds, calves of the low intake group showed mean immunoglobulin (Ig) levels higher than those on a standard diet, which suggests that Ig level may indicate the level of fighting against pathogens. Serum indices of body condition in calves showed generally positive correlations with milk nutrient production. In contrast, Ig level within each group showed a pattern inverse to that of the other group for early lactation: in the standard diet group, the greater the milk nutrient produced and calf growth, the lower the Ig level; this relationship was inversed in the low-nutrition group. These results suggest that, on a standard diet, high Ig levels may indicate high levels of pathogen fighting paired to poorer body condition. Inversely, once the first barriers of innate immunity are surpassed, only those calves on the low-nutrition group with greater resources would be able to spend more resources to fight infection. Thus, low calorie intake might boost its slowing effect on growth by increasing the costs of infection fighting.
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Wong CW. Dietary whey proteins and immunocompetence in the post-weaning stages of life. ADVANCES IN NUTRITIONAL RESEARCH 2002; 10:351-62. [PMID: 11795050 DOI: 10.1007/978-1-4615-0661-4_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C W Wong
- University of New England, Armidale, NSW 2351, Australia
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The growth hormone—Insulin-like growth factor-I axis and immunity. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1567-7443(02)80005-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Rhind SG, Castellani JW, Brenner IK, Shephard RJ, Zamecnik J, Montain SJ, Young AJ, Shek PN. Intracellular monocyte and serum cytokine expression is modulated by exhausting exercise and cold exposure. Am J Physiol Regul Integr Comp Physiol 2001; 281:R66-75. [PMID: 11404280 DOI: 10.1152/ajpregu.2001.281.1.r66] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study tested the hypothesis that exercise elicits monocytic cytokine expression and that prolonged cold exposure modulates such responses. Nine men (age, 24.6 +/- 3.8 y; VO(2 peak), 56.8 +/- 5.6 ml. kg(-1). min(-1)) completed 7 days of exhausting exercise (aerobic, anaerobic, resistive) and underwent three cold, wet exposures (CW). CW trials comprised </=6 h (six 1-h rest-work cycles) exposure to cold (5 degrees C, 20 km/h wind) and wet (5 cm/h rain) conditions. Blood samples for the determination of intracellular and serum cytokine levels and circulating hormone concentrations were drawn at rest (0700), after exercise (approximately 1130), and after CW (~2000). Whole blood was incubated with (stimulated) or without (spontaneous) lipopolysaccharide (LPS; 1 microgram/ml) and stained for CD14 monocyte surface antigens. Cell suspensions were stained for intracellular cytokine expression and analyzed by flow cytometry. The proportion of CD14(+) monocytes exhibiting spontaneous and stimulated intracellular expression of interleukin (IL)-1beta, IL-6, and tumor necrosis factor (TNF)-alpha increased after exercise, but these cells produced less IL-1beta and TNF-alpha after CW when CW was preceded by exhausting exercise. Serum cytokine concentrations followed a parallel trend. These findings suggest that blood monocytes contribute to exercise-induced cytokinemia and that cold exposure can differentially modulate cytokine production, upregulating expression of IL-6 and IL-1 receptor antagonist but downregulating IL-1beta and TNF-alpha. The cold-induced changes in cytokine expression appear to be linked to enhanced catecholamine secretion associated with cold exposure.
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Affiliation(s)
- S G Rhind
- Defence and Civil Institute of Environmental Medicine, Toronto, M3M 3B9, Ontario M5S 1A1 Canada
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Díaz-Torga GS, Mejia ME, González-Iglesias A, Formia N, Becú-Villalobos D, Lacau-Mengido IM. Metabolic cues for puberty onset in free grazing Holstein heifers naturally infected with nematodes. Theriogenology 2001; 56:111-22. [PMID: 11467507 DOI: 10.1016/s0093-691x(01)00547-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Leptin is a new plausible candidate for the molecular link between nutritional status and the reproductive axis. In previous studies we described that continuous natural nematode infections in heifers retarded growth and delayed the onset of puberty, and that the insulin-like growth factor I (IGF-I) was involved. In the present study we monitored the leptin levels during development in heifers naturally parasitized versus those chronically treated with ivermectin and we investigated whether growth hormone (GH) accounted for the differences in IGF-I previously noted. Insulin levels were also measured. Prolactin hormone was recorded as an indicator of immune system activation. We found a direct correlation between leptin and body weight during development and a prepubertal surge of the hormone 2 weeks before the first progesterone peak that indicates the onset of puberty. This suggests that leptin may act as a signal for this event. Insulin did not vary during growth and prepuberty. On the other hand, GH as not responsible for diminished IGF-I levels in parasitized animals as levels were similar in both groups. The GH levels were high at birth and then diminished rapidly and remained constant during development and puberty. The last hormone studied, prolactin, followed seasonal changes of sunlight duration and presented sporadic bursts in infected animals. These were related to high nematode infection and are probably involved in the immune response of the host.
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Affiliation(s)
- G S Díaz-Torga
- Institute of Biology and Experimental Medicine, CONICET Buenos Aires, Argentina
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Carroll JA, Matteri RL, Dyer CJ, Beausang LA, Zannelli ME. Impact of environmental temperature on response of neonatal pigs to an endotoxin challenge. Am J Vet Res 2001; 62:561-6. [PMID: 11327464 DOI: 10.2460/ajvr.2001.62.561] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the effect of various environmental temperatures (ET) on the ability of neonatal pigs to cope with an endotoxin challenge. ANIMALS 28 crossbred male pigs that were 24 hours old. PROCEDURE At 24 hours of age, pigs were placed in environmentally controlled chambers maintained at 18 or 34 C (14 pigs/ET). Rectal temperatures (RT) were recorded at 15-minute intervals for 3 hours following an IP injection of 0.9% NaCl (7 control pigs/ET) or lipopolysaccharide (LPS; 150 microg/kg of body weight; 7 LPS-treated pigs/ET). Tissue specimens and blood samples were collected following the 3-hour challenge period. RESULTS LPS-treated pigs exposed to 18 C had a period of hypothermia whereas RT for LPS-treated pigs at 34 C did not differ from control pigs. The LPS-treated pigs maintained at 18 C lost the most body weight during the 3-hour period and also had the greatest increase in serum cortisol concentration. Serum prolactin (PRL) concentration was decreased in pigs at 18 C, compared with pigs at 34 C. Challenge with LPS resulted in an increase in serum PRL concentration at 18 C but had no effect on serum PRL at 34 C. Challenge with LPS resulted in an increase in expression of tumor necrosis factor-alpha, interleukin-1 beta, and interleukin-6 receptor mRNA in the hypothalamus. CONCLUSIONS AND CLINICAL RELEVANCE Exposure to a cold ET can inhibit the ability of neonatal pigs to cope with an exogenous endotoxin challenge. When combined, cold stress and exposure to exogenous endotoxin induces a rapid and potentially dangerous loss of body temperature in neonatal pigs.
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Affiliation(s)
- J A Carroll
- Agricultural Research Service, United States Department of Agriculture, Animal Sciences Research Center, University of Missouri, Columbia 65211, USA
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Jurkowski M, Trojniar W, Borman A, Ciepielewski Z, Siemion D, Tokarski J. Peripheral blood natural killer cell cytotoxicity after damage to the limbic system in the rat. Brain Behav Immun 2001; 15:93-113. [PMID: 11259084 DOI: 10.1006/brbi.2000.0602] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The present work was aimed at examining the possible involvement of different parts of the septal area (dorsal, medial, lateral, and septohypothalamic nucleus), the basolateral amygdala, and the bed nucleus of the stria terminalis (BNST) in the regulation of the cytotoxic activity of NK cells (NKCC). The experimental approach included performing electrolytic (or sham) lesions in the tested brain areas and to measuring the peripheral blood NKCC (chromium-51 release assay), the number of leukocytes and lymphocytes, and the plasma corticosterone levels both before and at different time points after the lesion. Lesions were also induced in the three extralimbic structures: the paraventricular hypothalamic nucleus (PVN), the dorsal caudate-putamen, and the cerebellum. To test for a possible effect on NKCC of stress associated with blood collection, anesthesia, cranial surgery, and passing electric current through the brain the proper control experiments were also performed. Lesions of the medial septum and BNST caused gradual depression of NKCC, which peaked on the 10th day after the lesion, followed by a recovery to the baseline on days 21 (medial septum) and 42 (BNST) postinjury. In the respective sham-lesioned groups, mere insertion of electrodes into the medial septum and BNST evoked transient enhancement of NKCC (on the 3rd postlesion day), probably resulting from mechanical stimulation of the nervous tissue. Destruction of the other limbic and extralimbic structures appeared ineffective. After PVN lesions NKCC remained unchanged, despite an approximately 60% decrease in the basal corticosterone level. No adverse effects of the experimental and surgical procedures on NKCC, leukocyte and lymphocyte number, and corticosterone level were found, indicating that electrolytic lesions and other stereotaxic techniques can be safely used to study the brain-immune system interactions. The results obtained raise the question about the interrelationship between the medial septum and the hippocampal formation, BNST, the medial amygdala, and the hypothalamus (both medial and lateral) as a possible circuit involved in the regulation of cellular immune functions.
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Affiliation(s)
- M Jurkowski
- Department of Animal Physiology, University of Gdańsk, Poland.
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Abstract
An extensive, and controversial, literature concluding that prolactin (PRL), growth hormone (GH), insulin-like growth factor-I (IGF-I), and thyroid hormones are critical immunoregulatory factors has accumulated. However, recent studies of mice deficient in the production of these hormones or expression of their receptors indicate that there are only a few instances in which these hormones are required for lymphocyte development or antigen responsiveness. Instead, a case is made that their primary role is to counteract the effects of negative immunoregulatory factors, such as glucocorticoids, which are produced when the organism is subjected to major stressors. The immunoprotective actions of PRL, GH, IGF-I, and/or thyroid hormones in these instances may ensure immune system homeostasis and reduce the susceptibility to stress-induced disease. These immuno-enhancing effects could be exploited clinically in instances where the immune system is depressed due to illness or various treatment regimens.
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Affiliation(s)
- K Dorshkind
- Department of Pathology and Laboratory Medicine and The Jonsson Comprehensive Cancer Center, UCLA School of Medicine, Los Angeles, CA, USA
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