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Adekunbi DA, Huber HF, Li C, Nathanielsz PW, Cox LA, Salmon AB. Differential mitochondrial bioenergetics and cellular resilience in astrocytes, hepatocytes, and fibroblasts from aging baboons. GeroScience 2024:10.1007/s11357-024-01155-7. [PMID: 38607532 DOI: 10.1007/s11357-024-01155-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/05/2024] [Indexed: 04/13/2024] Open
Abstract
Biological resilience, broadly defined as the ability to recover from an acute challenge and return to homeostasis, is of growing importance to the biology of aging. At the cellular level, there is variability across tissue types in resilience and these differences are likely to contribute to tissue aging rate disparities. However, there are challenges in addressing these cell-type differences at regional, tissue, and subject level. To address this question, we established primary cells from aged male and female baboons between 13.3 and 17.8 years spanning across different tissues, tissue regions, and cell types including (1) fibroblasts from skin and from the heart separated into the left ventricle (LV), right ventricle (RV), left atrium (LA), and right atrium (RA); (2) astrocytes from the prefrontal cortex and hippocampus; and (3) hepatocytes. Primary cells were characterized by their cell surface markers and their cellular respiration was assessed with Seahorse XFe96. Cellular resilience was assessed by modifying a live-cell imaging approach; we previously reported that monitors proliferation of dividing cells following response and recovery to oxidative (50 µM-H2O2), metabolic (1 mM-glucose), and proteostasis (0.1 µM-thapsigargin) stress. We noted significant differences even among similar cell types that are dependent on tissue source and the diversity in cellular response is stressor-specific. For example, astrocytes had a higher oxygen consumption rate and exhibited greater resilience to oxidative stress (OS) than both fibroblasts and hepatocytes. RV and RA fibroblasts were less resilient to OS compared with LV and LA, respectively. Skin fibroblasts were less impacted by proteostasis stress compared to astrocytes and cardiac fibroblasts. Future studies will test the functional relationship of these outcomes to the age and developmental status of donors as potential predictive markers.
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Affiliation(s)
- Daniel A Adekunbi
- Department of Molecular Medicine and Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA
| | - Hillary F Huber
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Cun Li
- Department of Animal Science, Texas Pregnancy and Life-Course Health Research Center, University of Wyoming, Laramie, WY, USA
| | - Peter W Nathanielsz
- Department of Animal Science, Texas Pregnancy and Life-Course Health Research Center, University of Wyoming, Laramie, WY, USA
| | - Laura A Cox
- Center for Precision Medicine, Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Adam B Salmon
- Department of Molecular Medicine and Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, San Antonio, TX, 78229, USA.
- Geriatric Research Education and Clinical Center, Audie L. Murphy Hospital, Southwest Veterans Health Care System, San Antonio, TX, USA.
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Adekunbi DA, Huber HF, Li C, Nathanielsz PW, Cox LA, Salmon AB. Differential mitochondrial bioenergetics and cellular resilience in astrocytes, hepatocytes, and fibroblasts from aging baboons. bioRxiv 2024:2024.02.06.579010. [PMID: 38370705 PMCID: PMC10871288 DOI: 10.1101/2024.02.06.579010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Biological resilience, broadly defined as ability to recover from acute challenge and return to homeostasis, is of growing importance to the biology of aging. At the cellular level, there is variability across tissue types in resilience and these differences likely to contribute to tissue aging rate disparities. However, there are challenges in addressing these cell-type differences at regional, tissue and subject level. To address this question, we established primary cells from aged male and female baboons between 13.3-17.8 years spanning across different tissues, tissue regions, and cell types including: (1) fibroblasts from skin and from heart separated into left ventricle (LV), right ventricle (RV), left atrium (LA) and right atrium (RA), (2) astrocytes from the prefrontal cortex and hippocampus and (3) hepatocytes. Primary cells were characterized by their cell surface markers and their cellular respiration assessed with Seahorse XFe96. Cellular resilience was assessed by modifying a live-cell imaging approach we previously reported that monitors proliferation of dividing cells following response and recovery to oxidative (50µM-H2O2), metabolic (1mM-glucose) and proteostasis (0.1µM-thapsigargin) stress. We noted significant differences even among similar cell types that are dependent on tissue source and the diversity in cellular response is stressor specific. For example, astrocytes were more energetic and exhibited greater resilience to oxidative stress (OS) than both fibroblasts and hepatocytes. RV and RA fibroblasts were less resilient to OS compared with LV and LA respectively. Skin fibroblasts were less impacted by proteostasis stress compared to astrocytes and cardiac fibroblasts. Future studies will test the functional relationship of these outcomes to age and developmental status of donors as potential predictive markers.
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Affiliation(s)
- Daniel A Adekunbi
- Department of Molecular Medicine and Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Hillary F Huber
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Cun Li
- Texas Pregnancy and Life-course Health Research Center, Department of Animal Science, University of Wyoming, Laramie, Wyoming, USA
| | - Peter W Nathanielsz
- Texas Pregnancy and Life-course Health Research Center, Department of Animal Science, University of Wyoming, Laramie, Wyoming, USA
| | - Laura A Cox
- Center for Precision Medicine, Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Adam B Salmon
- Department of Molecular Medicine and Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
- Geriatric Research Education and Clinical Center, Audie L. Murphy Hospital, Southwest Veterans Health Care System, San Antonio, Texas, USA
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Adekunbi DA, Nathanielsz PW, Salmon AB. Cellular resilience and baboon aging. Aging (Albany NY) 2021; 13:24482-24484. [PMID: 34845113 PMCID: PMC8660624 DOI: 10.18632/aging.203728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 11/26/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Daniel A. Adekunbi
- Texas Pregnancy and Life-Course Health Research Center, Department of Animal Science, University of Wyoming, Laramie, WY 82071, USA
| | - Peter W. Nathanielsz
- Texas Pregnancy and Life-Course Health Research Center, Department of Animal Science, University of Wyoming, Laramie, WY 82071, USA
| | - Adam B. Salmon
- Barshop Institute for Longevity and Aging Studies, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
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Li XF, Adekunbi DA, Alobaid HM, Li S, Pilot M, Lightman SL, O'Byrne KT. Role of the posterodorsal medial amygdala in predator odour stress-induced puberty delay in female rats. J Neuroendocrinol 2019; 31:e12719. [PMID: 30963653 PMCID: PMC6563483 DOI: 10.1111/jne.12719] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/29/2019] [Accepted: 04/03/2019] [Indexed: 01/24/2023]
Abstract
Puberty onset is influenced by various factors, including psychosocial stress. The present study investigated cat-odour stress on puberty onset and oestrous cyclicity in rats. Female weanling rats were exposed to either soiled cat litter or fresh unused litter for 10 consecutive days. Following vaginal opening (VO), rats were smeared for 14 days to determine oestrous cyclicity. Anxiety-like behaviour was assessed using standard anxiety tests. Brains were collected to determine corticotrophin-releasing factor (CRF), CRF receptor 1 (CRF-R1) and CRF receptor 2 (CRF-R2) mRNA in the paraventricular nucleus (PVN), as well as the central nucleus of the amygdala (CEA) and the medial nucleus of the amygdala (MEA). Cat odour delayed VO and first oestrus, disrupted oestrous cycles and caused anxiogenic responses. Cat odour elicited increased CRF mRNA expression in the PVN but not in the CeA. CRF-R1 and CRF-R2 mRNA levels in the PVN and CeA were unaffected by cat odour; however, CRF-R1 mRNA levels were decreased in the MeA. The role of CRF signalling in the MeA, particularly its posterodorsal subnucleus (MePD), with respect to pubertal timing was directly examined by unilateral intra-MePD administration of CRF (0.2 nmol day-1 for 14 days) via an osmotic mini-pump from postnatal day 24 and was shown to delay VO and first oestrus. These data suggest that CRF signalling in the MePD may be associated with predator odour-induced puberty delay.
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Affiliation(s)
- Xiao Feng Li
- Department of Women and Children's HealthFaculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Daniel A. Adekunbi
- Department of Women and Children's HealthFaculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Hussah M. Alobaid
- Department of Women and Children's HealthFaculty of Life Sciences and MedicineKing's College LondonLondonUK
- Zoology DepartmentCollege of ScienceKing Saud UniversityRiyadhSaudi Arabia
| | - Shengyun Li
- Department of Women and Children's HealthFaculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Michel Pilot
- Department of Women and Children's HealthFaculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Stafford L. Lightman
- Henry Wellcome Laboratory for Integrative Neuroscience and EndocrinologyUniversity of BristolBristolUK
| | - Kevin T. O'Byrne
- Department of Women and Children's HealthFaculty of Life Sciences and MedicineKing's College LondonLondonUK
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Adekunbi DA, Li XF, Li S, Adegoke OA, Iranloye BO, Morakinyo AO, Lightman SL, Taylor PD, Poston L, O’Byrne KT. Role of amygdala kisspeptin in pubertal timing in female rats. PLoS One 2017; 12:e0183596. [PMID: 28846730 PMCID: PMC5573137 DOI: 10.1371/journal.pone.0183596] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/07/2017] [Indexed: 01/27/2023] Open
Abstract
To investigate the mechanism by which maternal obesity disrupts reproductive function in offspring, we examined Kiss1 expression in the hypothalamic arcuate (ARC) and anteroventral periventricular (AVPV) nuclei, and posterodorsal medial amygdala (MePD) of pre-pubertal and young adult offspring. Sprague-Dawley rats were fed either a standard or energy-dense diet for six weeks prior to mating and throughout pregnancy and lactation. Male and female offspring were weaned onto normal diet on postnatal day (pnd) 21. Brains were collected on pnd 30 or 100 for qRT-PCR to determine Kiss1 mRNA levels. Maternal obesity increased Kiss1 mRNA expression in the MePD of pre-pubertal male and female offspring, whereas Kiss1 expression was not affected in the ARC or AVPV at this age. Maternal obesity reduced Kiss1 expression in all three brain regions of 3 month old female offspring, but only in MePD of males. The role of MePD kisspeptin on puberty, estrous cyclicity and preovulatory LH surges was assessed directly in a separate group of post-weanling and young adult female rats exposed to a normal diet throughout their life course. Bilateral intra-MePD cannulae connected to osmotic mini-pumps for delivery of kisspeptin receptor antagonist (Peptide 234 for 14 days) were chronically implanted on pnd 21 or 100. Antagonism of MePD kisspeptin delayed puberty onset, disrupted estrous cyclicity and reduced the incidence of LH surges. These data show that the MePD plays a key role in pubertal timing and ovulation and that maternal obesity may act via amygdala kisspeptin signaling to influence reproductive function in the offspring.
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Affiliation(s)
- Daniel A. Adekunbi
- Division of Women’s Health, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
- Department of Physiology, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Xiao Feng Li
- Division of Women’s Health, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Shengyun Li
- Division of Women’s Health, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Olufeyi A. Adegoke
- Department of Physiology, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Bolanle O. Iranloye
- Department of Physiology, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Ayodele O. Morakinyo
- Department of Physiology, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Stafford L. Lightman
- Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology, University of Bristol, Bristol, United Kingdom
| | - Paul D. Taylor
- Division of Women’s Health, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Lucilla Poston
- Division of Women’s Health, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Kevin T. O’Byrne
- Division of Women’s Health, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
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Gresham R, Li S, Adekunbi DA, Hu M, Li XF, O'Byrne KT. Kisspeptin in the medial amygdala and sexual behavior in male rats. Neurosci Lett 2016; 627:13-7. [PMID: 27233219 PMCID: PMC4944646 DOI: 10.1016/j.neulet.2016.05.042] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 05/19/2016] [Accepted: 05/21/2016] [Indexed: 11/19/2022]
Abstract
The medial amygdala (MeA) is crucial for sexual behavior; kisspeptin (Kiss1) also plays a role in sexual function. Kisspeptin receptor (Kiss1r) knockout mice display no sexual behavior. Recently Kiss1 and Kiss1r have been discovered in the posterodorsal subnucleus of the medial amygdala (MePD). We hypothesised that Kiss1 in the MePD may have an influence on male sexual behavior. To test this we bilaterally cannulated the MePD and infused kisspeptin-10 in male rats. This caused the rats to have multiple erections, an effect specific to Kiss1 receptor activation, because Kiss1r antagonism blocked the erectile response. When Kiss1 was infused into the lateral cerebroventricle, there were no observed erections. We also measured the plasma levels of LH when Kiss1 is infused into the MePD or lateral cerebroventricle; Kiss1 increased plasma LH to comparable levels when infused into both sites. We conclude that Kiss1 has a role in male sexual behavior, which is specific to the MePD.
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Affiliation(s)
- Rebecca Gresham
- Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, SE1 1UL, UK
| | - Shengyun Li
- Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, SE1 1UL, UK
| | - Daniel A Adekunbi
- Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, SE1 1UL, UK
| | - Minghan Hu
- Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, SE1 1UL, UK
| | - Xiao Feng Li
- Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, SE1 1UL, UK
| | - Kevin T O'Byrne
- Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, SE1 1UL, UK.
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Morakinyo AO, Adekunbi DA, Dada KA, Adegoke OA. Coffee consumption attenuates insulin resistance and glucose intolerance in rats fed on high-sucrose diet. Niger J Physiol Sci 2013; 28:179-185. [PMID: 24937394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 04/11/2014] [Indexed: 06/03/2023]
Abstract
Several epidemiological evidences indicate that consumption of coffee is associated with a lower risk of type 2 diabetes mellitus (T2DM) however; there is dearth of experimental data to support these observations. Given that associations do not necessarily infer causality, the present study was designed to investigate the effect of coffee consumption on glucose regulation, T2DM and the probable mechanisms of action, using an animal model. The effect of coffee (2-fold dilution) by oral gavage on normal and high sucrose-solution (HSS) fed (30 % w/v) rats was evaluated. The results showed that consumption of coffee significantly increase glucose tolerance and insulin sensitivity (p<0.05) along with significant improvement in SOD and GSH activities. In addition, lipid indices such as TG and LDL as well as the lipid peroxidation marker (MDA) were markedly reduced (p<0.05) in rats fed with coffee compared with that of the HSS fed rats. These findings suggest that coffee consumption improves insulin sensitivity, glucose tolerance in HSS-fed rat possibly via inhibition of oxidative stress.
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Affiliation(s)
- A O Morakinyo
- Department of Physiology, College of Medicine of the University of Lagos, Lagos.
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