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Salehzadeh M, Hamden JE, Li MX, Bajaj H, Wu RS, Soma KK. Glucocorticoid Production in Lymphoid Organs: Acute Effects of Lipopolysaccharide in Neonatal and Adult Mice. Endocrinology 2022; 163:6453468. [PMID: 34864986 DOI: 10.1210/endocr/bqab244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Indexed: 11/19/2022]
Abstract
Glucocorticoids (GCs) are critical modulators of the immune system. The hypothalamic-pituitary-adrenal (HPA) axis regulates circulating GC levels and is stimulated by endotoxins. Lymphoid organs also produce GCs; however, it is not known how lymphoid GC levels are regulated in response to endotoxins. We assessed whether an acute challenge of lipopolysaccharide (LPS) increases lymphoid levels of progesterone and GCs, and expression of steroidogenic enzymes and key HPA axis components (eg, corticotropin-releasing hormone [CRH], adrenocorticotropic hormone [ACTH]). We administered LPS (50 µg/kg intraperitoneally) or vehicle control to male and female C57BL/6J neonatal (postnatal day [PND] 5) and adult (PND90) mice and collected blood, bone marrow, thymus, and spleen 4 hours later. We measured progesterone, 11-deoxycorticosterone, corticosterone, and 11-dehydrocorticosterone via liquid chromatography-tandem mass spectrometry. We measured gene expression of key steroidogenic enzymes (Cyp11b1, Hsd11b1, and Hsd11b2) and HPA axis components (Crh, Crhr1, Pomc, and Mc2r) via quantitative polymerase chain reaction. At PND5, LPS induced greater increases in steroid levels in lymphoid organs than in blood. In contrast, at PND90, LPS induced greater increases in steroid levels in blood than in lymphoid organs. Steroidogenic enzyme transcripts were present in all lymphoid organs, and LPS altered steroidogenic enzyme expression predominantly in the spleen. Lastly, we detected transcripts of key HPA axis components in all lymphoid organs, and there was an effect of LPS in the spleen. Taken together, these data suggest that LPS regulates GC production by lymphoid organs, similar to its effects on the adrenal glands, and the effects of LPS might be mediated by local expression of CRH and ACTH.
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Affiliation(s)
- Melody Salehzadeh
- Department of Zoology, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Jordan E Hamden
- Department of Zoology, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
- Department of Psychology, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Michael X Li
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Hitasha Bajaj
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Ruolan S Wu
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
- Department of Psychology, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
| | - Kiran K Soma
- Department of Zoology, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
- Department of Psychology, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
- Graduate Program in Neuroscience, University of British Columbia, Vancouver, BC, V6T 2B5, Canada
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Tetel V, Tonissen S, Fraley GS. Sex differences in serum glucocorticoid levels and heterophil:lymphocyte ratios in adult pekin ducks (Anas platyrhynchos domesticus). Gen Comp Endocrinol 2022; 317:113975. [PMID: 34995644 DOI: 10.1016/j.ygcen.2021.113975] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 11/18/2022]
Abstract
It is becoming more common for poultry scientists to utilize direct and indirect measures of stress hormones to monitor bird welfare. However, it has been clear that our understanding of the avian hypothalamic-pituitaryadrenal axis (HPA) is insufficient as evidenced by the many conflicting reports regarding stress responses, such as transportation stress, in poultry. It has long been assumed that the poultry HPA functions similarly to that of mammals, but now we know that there are considerable differences in the avian HPA compared to mammals. Synthesis and release of glucocorticoids (GC) are stimulated by adrenocorticotropin hormone (ACTH); GC are synthesized from a common pathway that begins with cholesterol and pregnenolone. The synthesis of one of the glucocorticoids does not depend upon the synthesis of the other. The purpose of our study was to test the hypothesis that ACTH will stimulate both corticosterone and cortisol release in ducks. To test this hypothesis, we injected artificial ACTH (cosyntropin; 0.0625 mg/kg, 0.031 mg/kg, or 0.016 mg/kg or saline as control) intramuscularly into adult drakes and hens (N = 10/sex/dose). Both glucocorticoids (GC) were assayed in serum using previously verified ELISAs. Blood smears were also assessed for heterophil to lymphocyte ratios (HLR). Data were analyzed by repeated measures 3-way ANOVA with Fishers PLSD as an ad hoc test. We observed that both GC were secreted in significantly (p = 0.0002) different patterns in a dose-dependent manner compared to controls, and that there was a significant (p = 0.0001) sex difference in both GC compared to saline controls. Further, we observed that all doses of ACTH elicited a significant (p = 0.004) sex difference in the HLR response compared to controls, but no dose-dependent effects were noted. Our data suggest that ducks, at least, may utilize more than just corticosterone to maintain physiological homeostasis in response to stress. Further, the time course of the stressor to release GC and subsequent HLR response may be dependent upon sex. More detailed analyses of the HPA are necessary in all avian species to better understand stress responses as we utilize biological bases for welfare assessments and stress responses.
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Affiliation(s)
- V Tetel
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, United States
| | - S Tonissen
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, United States
| | - G S Fraley
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, United States.
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Salehzadeh M, Soma KK. Glucocorticoid production in the thymus and brain: Immunosteroids and neurosteroids. Brain Behav Immun Health 2021; 18:100352. [PMID: 34988497 PMCID: PMC8710407 DOI: 10.1016/j.bbih.2021.100352] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/05/2021] [Accepted: 09/17/2021] [Indexed: 12/23/2022] Open
Abstract
Glucocorticoids (GCs) regulate a myriad of physiological systems, such as the immune and nervous systems. Systemic GC levels in blood are often measured as an indicator of local GC levels in target organs. However, several extra-adrenal organs can produce and metabolize GCs locally. More sensitive and specific methods for GC analysis (i.e., mass spectrometry) allow measurement of local GC levels in small tissue samples with low GC concentrations. Consequently, is it now apparent that systemic GC levels often do not reflect local GC levels. Here, we review the use of systemic GC measurements in clinical and research settings, discuss instances where systemic GC levels do not reflect local GC levels, and present evidence that local GC levels provide useful insights, with a focus on local GC production in the thymus (immunosteroids) and brain (neurosteroids). Lastly, we suggest key areas for further research, such as the roles of immunosteroids and neurosteroids in neonatal programming and the potential clinical relevance of local GC modulators.
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Affiliation(s)
- Melody Salehzadeh
- Department of Zoology, University of British Columbia, Vancouver, BC, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada
| | - Kiran K Soma
- Department of Zoology, University of British Columbia, Vancouver, BC, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada
- Department of Psychology, University of British Columbia, Vancouver, BC, Canada
- Graduate Program in Neuroscience, University of British Columbia, Vancouver, BC, Canada
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Sadeghi F, Vahednia E, Naderi Meshkin H, Kerachian MA. The effect of adrenocorticotropic hormone on alpha-2-macroglobulin in osteoblasts derived from human mesenchymal stem cells. J Cell Mol Med 2020; 24:4784-4790. [PMID: 32163666 PMCID: PMC7176844 DOI: 10.1111/jcmm.15152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/12/2020] [Accepted: 02/16/2020] [Indexed: 02/01/2023] Open
Abstract
Nowadays, alpha-2-macroglobulin (A2M) gene has allocated escalating interest among several genes involved in the pathogenesis of avascular necrosis of the femoral head (ANFH). This molecule could interact with several osteogenic-related proteins. It was reported that adrenocorticotropic hormone (ACTH) affects bones through its receptor located on osteoblasts, suggesting it as a potential target in ANFH treatment. In this study, the effect of ACTH on A2M expression was investigated in osteoblasts as well as during the differentiation of human mesenchymal stem cells (MSCs) into osteoblasts. In this study, MSCs derived from bone marrow were isolated and purified using Ficoll gradient and several passaging. MSCs were characterized by induction with osteogenic and adipogenic medium followed by Oil Red O, Alizarin Red and alkaline phosphatase staining. Besides, MSCs were exposed to various concentrations of ACTH to evaluate the cell variability by MTT assay. MSCs and differentiated osteoblasts were treated with 10-8 molar ACTH for 16 and 26 days, respectively. Then, the total RNA was extracted and A2M expression was quantified by real-time qPCR. The protein expression levels of osteoblast markers including alkaline phosphatase (ALPL) and bone gamma-carboxyglutamate protein (BGLAP) were also measured. The results showed that A2M expression in cells treated with ACTH was up-regulated significantly compared to the control group. Similarly, the expression of osteoblast gene markers including ALPL and BGLAP was significantly increased. ACTH, as an osteoblastic differentiation enhancer, up-regulates A2M, which promotes osteoblastic differentiation probably through TGF-β induction.
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Affiliation(s)
- Faezeh Sadeghi
- Medical Genetics Research CenterMashhad University of Medical SciencesMashhadIran
- Department of Medical GeneticsFaculty of MedicineMashhad University of Medical SciencesMashhadIran
| | - Elham Vahednia
- Department of Molecular GeneticsIslamic Azad UniversityDamghanIran
| | - Hojjat Naderi Meshkin
- Stem Cell and Regenerative Medicine Research DepartmentMashhad BranchAcademic Center for Education, Culture and Research (ACECR)MashhadIran
| | - Mohammad Amin Kerachian
- Medical Genetics Research CenterMashhad University of Medical SciencesMashhadIran
- Department of Medical GeneticsFaculty of MedicineMashhad University of Medical SciencesMashhadIran
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Tang X, Liu Y, Xiao Q, Yao Q, Allen M, Wang Y, Gao L, Qi Y, Zhang P. Pathological cyclic strain promotes proliferation of vascular smooth muscle cells via the ACTH/ERK/STAT3 pathway. J Cell Biochem 2018; 119:8260-8270. [DOI: 10.1002/jcb.26839] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 03/09/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Xia Tang
- Institute of Mechanobiology and Medical EngineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
| | - Yanyan Liu
- Institute of Mechanobiology and Medical EngineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
| | - Qian Xiao
- Institute of Mechanobiology and Medical EngineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
| | - Qingping Yao
- Institute of Mechanobiology and Medical EngineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
| | - Molly Allen
- Department of BioengineeringUniversity of CaliforniaSan DiegoCalifornia
| | - Yingxiao Wang
- Department of BioengineeringUniversity of CaliforniaSan DiegoCalifornia
| | - Lizhi Gao
- Institute of Mechanobiology and Medical EngineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
| | - Yingxin Qi
- Institute of Mechanobiology and Medical EngineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
| | - Ping Zhang
- Institute of Mechanobiology and Medical EngineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
- National Experimental Teaching Demonstration of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghaiChina
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Wang D, Jiang X, Lu A, Tu M, Huang W, Huang P. BMP14 induces tenogenic differentiation of bone marrow mesenchymal stem cells in vitro. Exp Ther Med 2018; 16:1165-1174. [PMID: 30116367 PMCID: PMC6090266 DOI: 10.3892/etm.2018.6293] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 05/24/2018] [Indexed: 01/28/2023] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) are pluripotent cells, which have the capacity to differentiate into various types of mesenchymal cell phenotypes, including osteoblasts, chondroblasts, myoblasts and tendon fibroblasts (TFs). The molecular mechanism for tenogenic differentiation of BMSCs is still unknown. The present study investigated the effects of bone morphogenetic protein (BMP) 14 on BMSC differentiation in vitro. It was revealed that BMP14 significantly increased the expression of tendon markers (scleraxis and tenomodulin) at the mRNA and protein level, which led to the upregulation of sirtuin 1 (Sirt1) expression. The gain or loss of Sirt1 function may promote or inhibit tenogenic differentiation by deacetylating the peroxisome proliferator-activated receptor (PPAR)-γ. BMP14 also triggered the phosphorylation of c-Jun N-terminal kinase (JNK) and Smad1; overexpression of Sirt1 significantly increased the phosphorylation and knockdown of Sirt1 significantly decreased the phosphorylation. The inhibition of JNK and Smad significantly increased the acetylation of PPARγ and inhibited the expression of tenogenic differentiation markers. These results suggest that BMP14 may induce the tenogenic differentiation of BMSCs via the Sirt1-JNK/Smad1-PPARγ signaling pathway. The present study provided a cellular and molecular basis for the development of novel therapeutic strategies for tendon healing.
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Affiliation(s)
- Dan Wang
- Department of Orthopedics, Jinmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China.,Department of Orthopedics, Jingchu Center Hospital Affiliated to The Institute of Technology, Jingmen, Hubei 448000, P.R. China
| | - Xinhao Jiang
- Department of Orthopedics, Jinmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China.,Department of Orthopedics, Jingchu Center Hospital Affiliated to The Institute of Technology, Jingmen, Hubei 448000, P.R. China
| | - Aiqing Lu
- Department of Orthopedics, Jinmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China.,Department of Orthopedics, Jingchu Center Hospital Affiliated to The Institute of Technology, Jingmen, Hubei 448000, P.R. China
| | - Min Tu
- Department of Orthopedics, Jinmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China.,Department of Orthopedics, Jingchu Center Hospital Affiliated to The Institute of Technology, Jingmen, Hubei 448000, P.R. China
| | - Wei Huang
- Department of Orthopedics, Jinmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China.,Department of Orthopedics, Jingchu Center Hospital Affiliated to The Institute of Technology, Jingmen, Hubei 448000, P.R. China
| | - Ping Huang
- Department of Orthopedics, Jinmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China.,Department of Orthopedics, Jingchu Center Hospital Affiliated to The Institute of Technology, Jingmen, Hubei 448000, P.R. China
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Gallo-Payet N. 60 YEARS OF POMC: Adrenal and extra-adrenal functions of ACTH. J Mol Endocrinol 2016; 56:T135-56. [PMID: 26793988 DOI: 10.1530/jme-15-0257] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 01/21/2016] [Indexed: 01/27/2023]
Abstract
The pituitary adrenocorticotropic hormone (ACTH) plays a pivotal role in homeostasis and stress response and is thus the major component of the hypothalamo-pituitary-adrenal axis. After a brief summary of ACTH production from proopiomelanocortin (POMC) and on ACTH receptor properties, the first part of the review covers the role of ACTH in steroidogenesis and steroid secretion. We highlight the mechanisms explaining the differential acute vs chronic effects of ACTH on aldosterone and glucocorticoid secretion. The second part summarizes the effects of ACTH on adrenal growth, addressing its role as either a mitogenic or a differentiating factor. We then review the mechanisms involved in steroid secretion, from the classical Cyclic adenosine monophosphate second messenger system to various signaling cascades. We also consider how the interaction between the extracellular matrix and the cytoskeleton may trigger activation of signaling platforms potentially stimulating or repressing the steroidogenic potency of ACTH. Finally, we consider the extra-adrenal actions of ACTH, in particular its role in differentiation in a variety of cell types, in addition to its known lipolytic effects on adipocytes. In each section, we endeavor to correlate basic mechanisms of ACTH function with the pathological consequences of ACTH signaling deficiency and of overproduction of ACTH.
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Affiliation(s)
- Nicole Gallo-Payet
- Division of EndocrinologyDepartment of Medicine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Quebec, Canada Division of EndocrinologyDepartment of Medicine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Quebec, Canada
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