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Liu Y, Zhou Q, Zou G, Zhang W. Inhibin subunit beta B (INHBB): an emerging role in tumor progression. J Physiol Biochem 2024:10.1007/s13105-024-01041-y. [PMID: 39183219 DOI: 10.1007/s13105-024-01041-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 07/30/2024] [Indexed: 08/27/2024]
Abstract
The gene inhibin subunit beta B (INHBB) encodes the inhibin βB subunit, which is involved in forming protein members of the transforming growth factor-β (TGF-β) superfamily. The TGF-β superfamily is extensively involved in cell proliferation, differentiation, adhesion, movement, metabolism, communication, and death. Activins and inhibins, which belong to the TGF-β superfamily, were first discovered in ovarian follicular fluid. They were initially described as regulators of pituitary follicle-stimulating hormone (FSH) secretion both in vivo and in vitro. Later studies found that INHBB is expressed not only in reproductive organs such as the ovary, uterus, and testis but also in numerous other organs, including the brain, spinal cord, liver, kidneys, and adrenal glands. This wide distribution implies its involvement in the normal physiological functions of various organs; however, the mechanisms underlying these functions have not yet been fully elucidated. Recent studies suggest that INHBB plays a significant, yet complex role in tumorigenesis. It appears to have dual effects, promoting tumor progression in some contexts while inhibiting it in others, although these roles are not yet fully understood. In this paper, we review the different expression patterns, functions, and mechanisms of INHBB in normal and tumor tissues to illustrate the research prospects of INHBB in tumor progression.
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Affiliation(s)
- Ying Liu
- Department of Medical Laboratory Science, The Third Xiangya Hospital, Central South University, Tongzipo Road 172, Yuelu District, Changsha, 410013, Hunan Province, People's Republic of China
- Department of Clinical Laboratory, Zhengzhou Orthopedic Hospital, Zhengzhou, Henan, People's Republic of China
- Department of Medical Laboratory Science, Xiangya School of Medicine, Central South University, Changsha, Hunan, People's Republic of China
| | - Qing Zhou
- Department of Clinical Laboratory, First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, People's Republic of China
| | - Guoying Zou
- Department of Clinical Laboratory, Brain Hospital of Hunan Province, Changsha, Hunan, People's Republic of China
| | - Wenling Zhang
- Department of Medical Laboratory Science, The Third Xiangya Hospital, Central South University, Tongzipo Road 172, Yuelu District, Changsha, 410013, Hunan Province, People's Republic of China.
- Department of Medical Laboratory Science, Xiangya School of Medicine, Central South University, Changsha, Hunan, People's Republic of China.
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Gordon BS, Burns PK, Laskin GR, Dunlap KR, Boykin JR, Rossetti ML, Fukuda DH, Steiner JL. SIRT1 induction in the skeletal muscle of male mice partially preserves limb muscle mass but not contractile force in response to androgen deprivation. J Physiol 2023; 601:3885-3903. [PMID: 37531448 DOI: 10.1113/jp284869] [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: 04/11/2023] [Accepted: 07/13/2023] [Indexed: 08/04/2023] Open
Abstract
In males, the factors that decrease limb muscle mass and strength in response to androgen deprivation are largely unknown. Sirtuin1 (SIRT1) protein levels are lower in the limb muscle of male mice subjected to androgen deprivation. The present study aimed to assess whether SIRT1 induction preserved limb muscle mass and force production in response to androgen deprivation. Physically mature male mice containing an inducible muscle-specific SIRT1 transgene were subjected to a sham or castration surgery and compared to sham and castrated male mice where the SIRT1 transgene was not induced. SIRT1 induction partially preserved whole-body lean mass, tibialis anterior (TA) mass and triceps surae muscle mass in response to castration. Further analysis of the TA muscle showed that muscle-specific SIRT1 induction partially preserved limb muscle soluble protein content and fibre cross-sectional area. Unilateral AAV9-mediated SIRT1 induction in the TA muscle showed that SIRT1 partially preserved mass by acting directly in the muscle. Despite those positive outcomes to limb muscle morphology, muscle-specific SIRT1 induction did not preserve the force generating capacity of the TA or triceps surae muscles. Interestingly, SIRT1 induction in females did not alter limb muscle mass or limb muscle strength even though females have naturally low androgen levels. SIRT1 also did not alter the androgen-mediated increase in limb muscle mass or strength in females. In all, these data suggest that decreases in SIRT1 protein in the limb muscle of males may partially contribute to the loss of limb muscle mass in response to androgen deprivation. KEY POINTS: SIRT1 induction in skeletal muscle of male mice subjected to androgen deprivation partially preserved limb muscle mass and fibre cross-sectional area. SIRT1 induction in skeletal muscle of male mice subjected to androgen deprivation did not prevent preserve limb muscle force generating capacity. SIRT1 induction in skeletal muscle of females did not alter baseline limb muscle mass, nor did it affect the androgen-mediated increase in limb muscle mass.
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Affiliation(s)
- Bradley S Gordon
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
- Institute of Sports Sciences and Medicine, Florida State University, Tallahassee, FL, USA
| | - Patrick K Burns
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - Grant R Laskin
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - Kirsten R Dunlap
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - Jake R Boykin
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - Michael L Rossetti
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - David H Fukuda
- School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, FL, USA
| | - Jennifer L Steiner
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
- Institute of Sports Sciences and Medicine, Florida State University, Tallahassee, FL, USA
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Zhang R, Singh S, Pan C, Xu B, Kindblom J, Eng KH, Krolewski JJ, Nastiuk KL. Rate of castration-induced prostate stroma regression is reduced in a mouse model of benign prostatic hyperplasia. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2023; 11:12-26. [PMID: 36923722 PMCID: PMC10009314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 02/25/2023] [Indexed: 03/18/2023]
Abstract
Benign prostatic hyperplasia (BPH) is a non-neoplastic proliferative disease producing lower urinary tract symptoms related to the resulting enlarged prostate. BPH is pathologically characterized by hyperplastic growth in both epithelial and stromal compartments. Androgen signaling is essential for prostate function and androgen blockade is the second-line medical therapy to relieve symptoms of BPH. Here we examined the prostates of probasin promoter-driven prolactin (Pb-PRL) transgenic mice, a robust model of BPH that spontaneously develops prostate enlargement, to investigate prostate regression in response to surgical castration. Serial ultrasound imaging demonstrated very uniform self-limited growth of Pb-PRL prostate volume that is consistent with the benign, limited cellular proliferation characteristic of BPH and that contrasts with the highly variable, exponential growth of murine prostate cancer models. Castration elicited only a partial reduction in prostate volume, relative to castration-induced regression of the normal prostate gland. The anti-androgen finasteride induced a diminished reduction of Pb-PRL prostate volume versus castration. The limited extent of Pb-PRL mouse prostate volume regression correlated with the initial volume of the stromal compartment, suggesting a differential sensitivity of the epithelial and stromal compartments to androgen withdrawal. Indeed, two-dimensional morphometric analyses revealed a distinctly reduced rate of regression for the stromal compartment in Pb-PRL mice. The myofibroblast component of the Pb-PRL prostate stroma appeared normal, but the stromal compartment contained more fibroblasts and extracellular collagen deposition. Like normal prostate, the rate of regression of the Pb-PRL prostate was partially dependent on TGFß and TNF signaling, but unlike the normal prostate, the extent of castration-induced regression was not affected by TGFß or TNF blockade. Our studies show that androgen deprivation can effectively reduce the overall volume of hyperplastic prostate, but the stromal compartment is relatively resistant, suggesting additional therapies might be required to offer an effective treatment for the clinical manifestations of BPH.
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Affiliation(s)
- Renyuan Zhang
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
| | - Shalini Singh
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
| | - Chunliu Pan
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
| | - Bo Xu
- Pathology and Laboratory Medicine, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
| | - Jon Kindblom
- Department of Oncology, University of GothenburgGoteborg 41345, Sweden
| | - Kevin H Eng
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
- Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
- Bristol Myers SquibbPrinceton, NJ, USA
| | - John J Krolewski
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
- Department of Biology and Interdisciplinary Unit, Data Science and Analytics, Buffalo State College, State University of New YorkNew York, NY 14263, USA
| | - Kent L Nastiuk
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263 USA
- Urology, Roswell Park Comprehensive Cancer CenterBuffalo, NY 14263, USA
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Krolewski JJ, Singh S, Sha K, Jaiswal N, Turowski SG, Pan C, Rich LJ, Seshadri M, Nastiuk KL. TNF Signaling Is Required for Castration-Induced Vascular Damage Preceding Prostate Cancer Regression. Cancers (Basel) 2022; 14:cancers14246020. [PMID: 36551505 PMCID: PMC9775958 DOI: 10.3390/cancers14246020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/26/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
The mainstay treatment for locally advanced, recurrent, or metastatic prostate cancer (PrCa) is androgen deprivation therapy (ADT). ADT causes prostate cancers to shrink in volume, or regress, by inducing epithelial tumor cell apoptosis. In normal, non-neoplastic murine prostate, androgen deprivation via castration induces prostate gland regression that is dependent on TNF signaling. In addition to this direct mechanism of action, castration has also been implicated in an indirect mechanism of prostate epithelial cell death, which has been described as vascular regression. The initiating event is endothelial cell apoptosis and/or increased vascular permeability. This subsequently leads to reduced blood flow and perfusion, and then hypoxia, which may enhance epithelial cell apoptosis. Castration-induced vascular regression has been observed in both normal and neoplastic prostates. We used photoacoustic, power Doppler, and contrast-enhanced ultrasound imaging, and CD31 immunohistochemical staining of the microvasculature to assess vascular integrity in the period immediately following castration, enabling us to test the role of TNF signaling in vascular regression. In two mouse models of androgen-responsive prostate cancer, TNF signaling blockade using a soluble TNFR2 ligand trap reversed the functional aspects of vascular regression as well as structural changes in the microvasculature, including reduced vessel wall thickness, cross-sectional area, and vessel perimeter length. These results demonstrate that TNF signaling is required for vascular regression, most likely by inducing endothelial cell apoptosis and increasing vessel permeability. Since TNF is also the critical death receptor ligand for prostate epithelial cells, we propose that TNF is a multi-purpose, comprehensive signal within the prostate cancer microenvironment that mediates prostate cancer regression following androgen deprivation.
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Affiliation(s)
- John J. Krolewski
- Department of Cancer Genetics & Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Shalini Singh
- Department of Cancer Genetics & Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Kai Sha
- Department of Cancer Genetics & Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Neha Jaiswal
- Department of Cancer Genetics & Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Steven G. Turowski
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Chunliu Pan
- Department of Cancer Genetics & Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Laurie J. Rich
- Laboratory of Translational Imaging, Center for Oral Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Mukund Seshadri
- Laboratory of Translational Imaging, Center for Oral Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Kent L. Nastiuk
- Department of Cancer Genetics & Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
- Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
- Correspondence: ; Tel.: +1-716-845-5771
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Sonmez HK, Sonmez G, Dogan S, Horozoglu F, Demirtas A, Evereklioglu C. Effects of Androgen Deprivation Therapy on Extraocular Muscles, Retrobulbar Orbital Fat, and the Optic Nerve in Patients with Prostate Cancer. Ophthalmic Res 2022; 66:272-280. [PMID: 36228576 DOI: 10.1159/000527387] [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: 08/02/2022] [Accepted: 09/26/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate radiologically the effects of long-term luteinizing hormone-releasing hormone (LHRH) agonist therapy on extraocular muscle thickness, retrobulbar orbital fat (ROF), and the optic nerve (ON) in prostate cancer (PCa) patients. METHODS The retrospective study included patients with primary or recurrent PCa who received androgen deprivation therapy (ADT) for at least 12 months. Each patient underwent gallium-68 prostate-specific membrane antigen positron emission tomography-computed tomography both before and at the end of the 12-month treatment. Thickness of the ON, lateral rectus muscle, medial rectus muscle, superior rectus muscle, and inferior rectus muscle were measured by using the coronal CT sections in soft tissue window. ROF, ocular protrusion, and ON length were measured in sagittal and coronal planes. Changes in these anatomical structures induced by LHRH analogs were investigated by comparing pre- and post-treatment measurements. RESULTS A total of 57 patients were included in the study. Median PSA and TT values of the patients before treatment were 36.5 (range, 19.6-51.2) ng/mL and 614.0 (range, 472.0-743.0) ng/dL, respectively, and these values decreased significantly after the treatment (10.6 [range, 5.2-14.2] ng/mL and 36.5 [range, 19.6-51.2] ng/dL, respectively, p < 0.001 for both). After the treatment, there was a statistically significant decrease in the areas of inferior rectus muscle, superior rectus muscle, lateral rectus muscle, and medial rectus muscle (p < 0.001 for all), while significant increases were observed in ROF (11.9%, p < 0.001) and ON thickness (14.3%, p = 0.004). The amount of ocular protrusion also showed a significant increase of approximately 14% after the treatment (14.0 [range, 12.0-16.0] mm vs. 16.0 [range, 14.0-17.2] mm, p < 0.001). DISCUSSION/CONCLUSION Our findings, for the first time in the literature, indicated that ADT causes a decrease in extraocular muscle mass and an increase in ROF with ocular protrusion. It can be asserted that these changes are similar to the changes in skeletal muscle and fat mass in other body parts. Further studies with a higher level of evidence are needed to clinically evaluate the increase in ocular protrusion and ON enlargement, which are likely to be caused by the increase in ROF.
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Affiliation(s)
- Hatice Kubra Sonmez
- Department of Ophthalmology, Division of Oculoplastic, Orbital, and Lacrimal Surgery, Erciyes University Medical Faculty, Kayseri, Turkey
- Department of Ophthalmology, Kayseri State Hospital, Kayseri, Turkey
| | - Gokhan Sonmez
- Department of Urology, Division of Urooncology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Serap Dogan
- Department of Radiology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Fatih Horozoglu
- Department of Ophthalmology, Division of Oculoplastic, Orbital, and Lacrimal Surgery, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Abdullah Demirtas
- Department of Urology, Division of Urooncology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Cem Evereklioglu
- Department of Ophthalmology, Division of Oculoplastic, Orbital, and Lacrimal Surgery, Erciyes University Medical Faculty, Kayseri, Turkey
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Frailty in rodents: Models, underlying mechanisms, and management. Ageing Res Rev 2022; 79:101659. [PMID: 35660004 DOI: 10.1016/j.arr.2022.101659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/24/2022] [Accepted: 05/30/2022] [Indexed: 11/22/2022]
Abstract
Frailty is a clinical geriatric syndrome characterized by decreased multisystem function and increased vulnerability to adverse outcomes. Although numerous studies have been conducted on frailty, the underlying mechanisms and management strategies remain unclear. As rodents share homology with humans, they are used extensively as animal models to study human diseases. Rodent frailty models can be classified broadly into the genetic modification and non-genetic modification models, the latter of which include frailty assessment models (based on the Fried frailty phenotype and frailty index methods) and induced frailty models. Such models were developed for use in investigating frailty-related physiological changes at the gene, cellular, molecular, and system levels, including the organ system level. Furthermore, exercise, diet, and medication interventions, in addition to their combinations, could improve frailty status in rodents. Rodent frailty models provide novel and effective tools for frailty research. In the present paper, we review research progress in rodent frailty models, mechanisms, and management, which could facilitate and guide further clinical research on frailty in older adults.
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Rossetti ML, Dunlap KR, Salazar G, Hickner RC, Kim JS, Chase BP, Miller BF, Gordon BS. Systemic delivery of a mitochondria targeted antioxidant partially preserves limb muscle mass and grip strength in response to androgen deprivation. Mol Cell Endocrinol 2021; 535:111391. [PMID: 34245847 PMCID: PMC8403153 DOI: 10.1016/j.mce.2021.111391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/21/2021] [Accepted: 07/06/2021] [Indexed: 10/20/2022]
Abstract
Muscle mass is important for health. Decreased testicular androgen production (hypogonadism) contributes to the loss of muscle mass, with loss of limb muscle being particularly debilitating. Androgen replacement is the only pharmacological treatment, which may not be feasible for everyone. Prior work showed that markers of reactive oxygen species and markers of mitochondrial degradation pathways were higher in the limb muscle following castration. Therefore, we tested whether an antioxidant preserved limb muscle mass in male mice subjected to a castration surgery. Subsets of castrated mice were treated with resveratrol (a general antioxidant) or MitoQ (a mitochondria targeted antioxidant). Relative to the non-castrated control mice, lean mass, limb muscle mass, and grip strength were partially preserved only in castrated mice treated with MitoQ. Independent of treatment, markers of mitochondrial degradation pathways remained elevated in all castrated mice. Therefore, a mitochondrial targeted antioxidant may partially preserve limb muscle mass in response to hypogonadism.
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Affiliation(s)
- Michael L Rossetti
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - Kirsten R Dunlap
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - Gloria Salazar
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA
| | - Robert C Hickner
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA; Institute of Sports Sciences and Medicine, Florida State University, Tallahassee, FL, USA
| | - Jeong-Su Kim
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA; Institute of Sports Sciences and Medicine, Florida State University, Tallahassee, FL, USA
| | - Bryant P Chase
- Department of Biological Science, Florida State University, Tallahassee, FL, USA
| | - Benjamin F Miller
- Aging & Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Bradley S Gordon
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL, USA; Institute of Sports Sciences and Medicine, Florida State University, Tallahassee, FL, USA.
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A chronic low dosage of taurine induces muscle weakness in castrated-aged mice. TRANSLATIONAL MEDICINE OF AGING 2021. [DOI: 10.1016/j.tma.2021.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Abstract
Sarcopenia describes low muscle mass and strength associated with ageing, whilst reduced physical performance indicates the severity of the condition. It can happen independently of other medical conditions and can be a key feature of the frailty phenotype. Frailty is a syndrome of increased vulnerability to incomplete resolution of homeostasis, following a stressor event. Researchers have described the implications of hypothalamic pituitary dysregulation in the pathogenesis of both entities. This review summarizes the recent evidence in this area as well as other endocrine factors such as insulin resistance and vitamin D status and outlines current research priorities. We conducted searches to PubMed and Embase databases for articles, reviews and studies reporting new data on the interaction between hormones of the endocrine system and frailty and/ or sarcopenia in the last 5 years. Interventional studies, cohort studies, case-control studies and animal studies were included. Clinical trials register was also searched to identify ongoing relevant studies. Studies have given us insights into the complex relationships between factors such as anabolic hormones, glucocorticoids and vitamin D on muscle strength and performance and their involvement in ageing phenotypes. However, robust randomized controlled trials are needed to consolidate existing evidence in humans and inform clinical practice. Current evidence supports hormone replacement in patients with confirmed deficiencies, to optimize health and prevent complications. Hormone replacement has limited use for age-related conditions. Current interest is focused on muscle/bone/fat interactions and health outcomes in "sarcopenic obesity." A life-course approach to improving 'health-span' is advocated. Lifestyle factors such as nutrition and physical activity have important interactions with body composition, physical function and metabolic outcomes. Large-scale clinical trials will determine the efficacy and long-term safety of hormone supplementation in the management of sarcopenia and frailty.
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Affiliation(s)
- Vicky Kamwa
- Musculoskeletal Endocrinology Research Group, Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK - .,Academic Metabolic Bone Unit, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK - .,Institute of Inflammation and Ageing, The University of Birmingham, Birmingham, UK -
| | - Carly Welch
- Institute of Inflammation and Ageing, The University of Birmingham, Birmingham, UK
| | - Zaki K Hassan-Smith
- Musculoskeletal Endocrinology Research Group, Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, UK.,Academic Metabolic Bone Unit, Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
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Rossetti ML, Tomko RJ, Gordon BS. Androgen depletion alters the diurnal patterns to signals that regulate autophagy in the limb skeletal muscle. Mol Cell Biochem 2020; 476:959-969. [PMID: 33128669 DOI: 10.1007/s11010-020-03963-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 10/23/2020] [Indexed: 12/14/2022]
Abstract
Hypogonadism contributes to limb skeletal muscle atrophy by increasing rates of muscle protein breakdown. Androgen depletion increases markers of the autophagy protein breakdown pathway in the limb muscle that persist throughout the diurnal cycle. However, the regulatory signals underpinning the increase in autophagy markers remain ill-defined. The purpose of this study was to characterize changes to autophagy regulatory signals in the limb skeletal muscle following androgen depletion. Male mice were subjected to a castration surgery or a sham surgery as a control. Seven weeks post-surgery, a subset of mice from each group was sacrificed every 4 hr over a 24 hr period. Protein and mRNA from the Tibialis Anterior (TA) were subjected to Western blot and RT-PCR. Consistent with an overall increase in autophagy, the phosphorylation pattern of Uncoordinated Like Kinase 1 (ULK1) (Ser555) was elevated throughout the diurnal cycle in the TA of castrated mice. Factors that induce the progression of autophagy were also increased in the TA following androgen depletion including an increase in the phosphorylation of c-Jun N-terminal Kinase (JNK) (Thr183/Tyr185) and an increase in the ratio of BCL-2 Associated X (BAX) to B-cell lymphoma 2 (BCL-2). Moreover, we observed an increase in the protein expression pattern of p53 and the mRNA of the p53 target genes Cyclin-Dependent Kinase Inhibitor 1A (p21) and Growth Arrest and DNA Damage Alpha (Gadd45a), which are known to increase autophagy and induce muscle atrophy. These data characterize novel changes to autophagy regulatory signals in the limb skeletal muscle following androgen deprivation.
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Affiliation(s)
- Michael L Rossetti
- Department of Nutrition, Food and Exercise Science, Florida State University, 600 W. Cottage Avenue, Tallahassee, FL, 32306, USA
| | - Robert J Tomko
- Department of Biomedical Sciences, Florida State University College of Medicine, 115 W Call Street, Tallahassee, FL, 32304, USA
| | - Bradley S Gordon
- Department of Nutrition, Food and Exercise Science, Florida State University, 600 W. Cottage Avenue, Tallahassee, FL, 32306, USA.
- Institute of Sports Sciences and Medicine, Florida State University, 600 W. Cottage Ave, Tallahassee, FL, 32306, USA.
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Pan C, Jaiswal Agrawal N, Zulia Y, Singh S, Sha K, Mohler JL, Eng KH, Chakkalakal JV, Krolewski JJ, Nastiuk KL. Prostate tumor-derived GDF11 accelerates androgen deprivation therapy-induced sarcopenia. JCI Insight 2020; 5:127018. [PMID: 32078585 PMCID: PMC7213789 DOI: 10.1172/jci.insight.127018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/19/2020] [Indexed: 12/31/2022] Open
Abstract
Most prostate cancers depend on androgens for growth, and therefore, the mainstay treatment for advanced, recurrent, or metastatic prostate cancer is androgen deprivation therapy (ADT). A prominent side effect in patients receiving ADT is an obese frailty syndrome that includes fat gain and sarcopenia, defined as the loss of muscle function accompanied by reduced muscle mass or quality. Mice bearing Pten-deficient prostate cancers were examined to gain mechanistic insight into ADT-induced sarcopenic obesity. Castration induced fat gain as well as skeletal muscle mass and strength loss. Catabolic TGF-β family myokine protein levels were increased immediately prior to strength loss, and pan-myokine blockade using a soluble receptor (ActRIIB-Fc) completely reversed the castration-induced sarcopenia. The onset of castration-induced strength and muscle mass loss, as well as the increase in catabolic TGF-β family myokine protein levels, were coordinately accelerated in tumor-bearing mice relative to tumor-free mice. Notably, growth differentiation factor 11 (GDF11) increased in muscle after castration only in tumor-bearing mice, but not in tumor‑free mice. An early surge of GDF11 in prostate tumor tissue and in the circulation suggests that endocrine GDF11 signaling from tumor to muscle is a major driver of the accelerated ADT-induced sarcopenic phenotype. In tumor-bearing mice, GDF11 blockade largely prevented castration-induced strength loss but did not preserve muscle mass, which confirms a primary role for GDF11 in muscle function and suggests an additional role for the other catabolic myokines.
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Affiliation(s)
| | | | | | | | - Kai Sha
- Department of Cancer Genetics and Genomics
| | | | - Kevin H Eng
- Department of Cancer Genetics and Genomics.,Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Joe V Chakkalakal
- Department of Pharmacology & Physiology and.,Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, New York, USA
| | | | - Kent L Nastiuk
- Department of Cancer Genetics and Genomics.,Department of Urology, and
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Iemura S, Kawao N, Okumoto K, Akagi M, Kaji H. Role of irisin in androgen-deficient muscle wasting and osteopenia in mice. J Bone Miner Metab 2020; 38:161-171. [PMID: 31494773 DOI: 10.1007/s00774-019-01043-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/12/2019] [Indexed: 10/26/2022]
Abstract
Androgen deficiency plays a crucial role in the pathogenesis of male osteoporosis and sarcopenia. Myokines have recently been identified as humoral factors that are involved in the interactions between muscle and bone; however, the influence of androgen deficiency on these interactions remains unclear. Therefore, we herein investigated the roles of humoral factors linking muscle to bone using orchidectomized mice with sarcopenia and osteopenia. Orchidectomy (ORX) significantly reduced muscle mass, grip strength, and trabecular bone mineral density (BMD) in mice. Among the myokines examined, ORX only significantly reduced fibronectin type III domain-containing 5 (Fndc5) mRNA levels in both the soleus and gastrocnemius muscles of mice. In simple regression analyses, Fndc5 mRNA levels in the soleus muscle positively correlated with trabecular BMD, but not cortical BMD. The administration of irisin, a product of Fndc5, significantly protected against the decrease induced in trabecular BMD, but not muscle mass, by androgen deficiency in mice. In conclusion, the present results demonstrated that androgen deficiency decreases the expression of irisin in the skeletal muscle of mice. Irisin may be involved in muscle/bone relationships negatively affected by androgen deficiency.
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Affiliation(s)
- Shunki Iemura
- Department of Orthopaedic Surgery, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
- Department of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
| | - Naoyuki Kawao
- Department of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
| | - Katsumi Okumoto
- Life Science Research Institute, Kindai University, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
| | - Masao Akagi
- Department of Orthopaedic Surgery, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
| | - Hiroshi Kaji
- Department of Physiology and Regenerative Medicine, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan.
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Durán J, Estrada M. Commentary: Blockade of activin type II receptors with a dual anti-ActRIIA/IIB antibody is critical to promote maximal skeletal muscle hypertrophy. Front Pharmacol 2018; 9:381. [PMID: 29726548 PMCID: PMC5917040 DOI: 10.3389/fphar.2018.00381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/03/2018] [Indexed: 11/26/2022] Open
Affiliation(s)
- Javier Durán
- Program of Physiology and Biophysics, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Manuel Estrada
- Program of Physiology and Biophysics, Faculty of Medicine, University of Chile, Santiago, Chile
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Supraphysiologic Administration of GDF11 Induces Cachexia in Part by Upregulating GDF15. Cell Rep 2018; 22:1522-1530. [DOI: 10.1016/j.celrep.2018.01.044] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/30/2017] [Accepted: 01/15/2018] [Indexed: 12/25/2022] Open
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Klose A, Liu W, Paris ND, Forman S, Krolewski JJ, Nastiuk KL, Chakkalakal JV. Castration induces satellite cell activation that contributes to skeletal muscle maintenance. JCSM RAPID COMMUNICATIONS 2018; 1:e00040. [PMID: 29782610 PMCID: PMC5959044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Sarcopenia, the age-related loss of skeletal muscle, is a side effect of androgen deprivation therapy (ADT) for prostate cancer patients. Resident stem cells of skeletal muscle, satellite cells (SCs), are an essential source of progenitors for the growth and regeneration of skeletal muscle. Decreased androgen signaling and deficits in the number and function of SCs are features of aging. Although androgen signaling is known to regulate skeletal muscle, the cellular basis for ADT-induced exacerbation of sarcopenia is unknown. Furthermore, the consequences of androgen deprivation on SC fate in adult skeletal muscle remain largely unexplored. METHODS We examined SC fate in an androgen-deprived environment using immunofluorescence and fluorescence-activated cell sorting (FACS) with SC-specific markers in young castrated mice. To study the effects of androgen deprivation on SC function and skeletal muscle regenerative capacity, young castrated mice were subjected to experimental regenerative paradigms. SC-derived-cell contributions to skeletal muscle maintenance were examined in castrated Pax7CreER/+; ROSA26mTmG/+ mice. SCs were depleted in Pax7CreER/+; ROSA26DTA/+ mice to ascertain the consequences of SC ablation in sham and castrated skeletal muscles. Confocal immunofluorescence analysis of neuromuscular junctions (NMJs), and assessment of skeletal muscle physiology, contractile properties, and integrity were conducted. RESULTS Castration led to SC activation, however this did not result in a decline in SC function or skeletal muscle regenerative capacity. Surprisingly, castration induced SC-dependent maintenance of young skeletal muscle. The functional dependence of skeletal muscles on SCs in young castrated mice was demonstrated by an increase in SC-derived-cell fusion within skeletal muscle fibers. SC depletion was associated with further atrophy and functional decline, as well as the induction of partial innervation and the loss of NMJ-associated myonuclei in skeletal muscles from castrated mice. CONCLUSION The maintenance of skeletal muscles in young castrated mice relies on the cellular contributions of SCs. Considering the well-described age-related decline in SCs, the results in this study highlight the need to devise strategies that promote SC maintenance and activity to attenuate or reverse the progression of sarcopenia in elderly androgen-deprived individuals.
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Affiliation(s)
- Alanna Klose
- Department of Orthopaedics and Rehabilitation, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY USA
| | - Wenxuan Liu
- Department of Orthopaedics and Rehabilitation, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY USA
| | - Nicole D. Paris
- Department of Orthopaedics and Rehabilitation, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY USA
| | - Sophie Forman
- Department of Orthopaedics and Rehabilitation, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY USA
| | - John J. Krolewski
- Department of Cancer Genetics & Genomics, and Center for Personalized Medicine, Roswell Park Cancer Institute; Buffalo, NY USA
| | - Kent L. Nastiuk
- Department of Cancer Genetics & Genomics, and Department of Urology, Roswell Park Cancer Institute; Buffalo, NY USA
| | - Joe V. Chakkalakal
- Department of Orthopaedics and Rehabilitation, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY USA
- Stem Cell and Regenerative Medicine Institute, University of Rochester Medical Center, Rochester, NY USA
- The Rochester Aging Research Center, University of Rochester Medical Center, Rochester, NY USA
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Rossetti ML, Steiner JL, Gordon BS. Androgen-mediated regulation of skeletal muscle protein balance. Mol Cell Endocrinol 2017; 447:35-44. [PMID: 28237723 PMCID: PMC5407187 DOI: 10.1016/j.mce.2017.02.031] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/20/2017] [Accepted: 02/20/2017] [Indexed: 02/06/2023]
Abstract
Androgens significantly alter muscle mass in part by shifting protein balance in favor of net protein accretion. During various atrophic conditions, the clinical impact of decreased production or bioavailability of androgens (termed hypogonadism) is important as a loss of muscle mass is intimately linked with survival outcome. While androgen replacement therapy increases muscle mass in part by restoring protein balance, this is not a comprehensive treatment option due to potential side effects. Therefore, an understanding of the mechanisms by which androgens alter protein balance is needed for the development of androgen-independent therapies. While the data in humans suggest androgens alter protein balance (both synthesis and breakdown) in the fasted metabolic state, a predominant molecular mechanism(s) behind this observation is still lacking. This failure is likely due in part to inconsistent experimental design between studies including failure to control nutrient/feeding status, the method of altering androgens, and the model systems utilized.
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Affiliation(s)
- Michael L Rossetti
- The Institute of Exercise Physiology and Wellness, The University of Central Florida, PO Box 161250, Orlando, FL 32816, United States
| | - Jennifer L Steiner
- Department of Cellular and Molecular Physiology, The Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, United States
| | - Bradley S Gordon
- The Institute of Exercise Physiology and Wellness, The University of Central Florida, PO Box 161250, Orlando, FL 32816, United States.
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Affiliation(s)
- Natasha Kyprianou
- Departments of Urology, Biochemistry and Toxicology & Cancer Biology, University of Kentucky College of Medicine, Lexington, Kentucky 40536
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