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Potential anti-cancer effects of hibernating common carp (Cyprinus carpio) plasma on B16-F10 murine melanoma: In vitro and in vivo studies. Int J Biol Macromol 2023; 238:124058. [PMID: 36931484 DOI: 10.1016/j.ijbiomac.2023.124058] [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: 04/23/2022] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023]
Abstract
Melanoma is the major type of skin cancer, which its treatment is still a challenge in the world. In recent years, interest in hibernation-based therapeutic approaches for various biomedical applications has been increased. Many studies indicated that some factors in the blood plasma of hibernating animals such as alpha-2-macroglobulin (A2M) cause anti-proliferative effects. Considering that, the present study was conducted to investigate the anti-cancer effects of hibernating common carp plasma (HCCP) on murine melanoma (B16-F10) in vitro and in vivo. The effect of HCCP on cell viability, migration, apoptosis rate, and cell cycle distribution of B16-F10 cells, tumor growth, and rate of survival were evaluated. To investigate the role of A2M in the anti-cancer effects of HCCP, the gene of interest and proteins in HCCP and non-hibernating common carp plasma (NHCCP) were evaluated by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) assay as well as sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and mass spectrometry analysis. Based on our findings, HCCP significantly decreased B16-F10 cell viability. Moreover, HCCP caused morphological alternations, inhibition of migration, induction of apoptosis, and significantly induced the cell cycle arrest at the G2/M phase. In addition, A2M level was significantly increased in HCCP compared with NHCCP. Taken together, our findings suggested that HCCP had the potential to be a promising novel therapeutic target for cancer treatment because of its anti-cancer properties.
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Golpich M, Amini E, Kefayat A, Fesharaki M, Moshtaghian J. In vitro and in vivo anti-cancer effects of hibernating common carp (Cyprinus carpio) plasma on metastatic triple-negative breast cancer. Sci Rep 2022; 12:2855. [PMID: 35190572 PMCID: PMC8861139 DOI: 10.1038/s41598-022-06368-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 01/28/2022] [Indexed: 11/28/2022] Open
Abstract
Uncontrollable proliferation is a hallmark of cancer cells. Cell proliferation and migration are significantly depressed during hibernation state. Many studies believe some factors in the plasma of hibernating animals cause these effects. This study aimed to assess the anti-cancer effects of hibernating common carp (Cyprinus carpio) plasma on 4T1 cancer cells in vitro and in vivo. The effect of hibernating plasma on cell viability, morphology, migration, apoptosis rate, and cell cycle distribution of 4T1 cells was investigated in vitro and in vivo. Hibernating plasma at a concentration of 16 mg/ml significantly reduced the viability of 4T1 cancer cells, without any toxicity on L929 normal fibroblast cells. It could change the morphology of cancer cells, induced apoptosis and cell cycle arrest at the G2/M phase, and inhibited migration. Furthermore, intratumoral injection of hibernating plasma (200 µl, 16 mg/ml) in the tumor-bearing mice caused a significant inhibition of 4T1 breast tumors volume (46.9%) and weight (58.8%) compared with controls. A significant decrease in the number of metastatic colonies at the lungs (80%) and liver (52.8%) of hibernating plasma-treated animals was detected which increased the survival time (21.9%) compared to the control groups. Immunohistochemical analysis revealed a considerable reduction in the Ki-67-positive cells in the tumor section of the hibernating plasma-treated animals compared with controls. Taken together, the SDS-PAGE and mass spectrometry analysis indicated the alpha-2-macroglobulin level in the hibernating fish plasma was significantly increased. It could exert an anti-cancer effect on breast cancer cells and suggested as a novel cancer treatment strategy.
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3
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Caballero RE, Dong SXM, Gajanayaka N, Ali H, Cassol E, Cameron WD, Korneluk R, Tremblay MJ, Angel JB, Kumar A. Role of RIPK1 in SMAC mimetics-induced apoptosis in primary human HIV-infected macrophages. Sci Rep 2021; 11:22901. [PMID: 34824340 PMCID: PMC8617210 DOI: 10.1038/s41598-021-02146-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 11/09/2021] [Indexed: 11/09/2022] Open
Abstract
Macrophages serve as viral reservoirs due to their resistance to apoptosis and HIV-cytopathic effects. We have previously shown that inhibitor of apoptosis proteins (IAPs) confer resistance to HIV-Vpr-induced apoptosis in normal macrophages. Herein, we show that second mitochondrial activator of caspases (SMAC) mimetics (SM) induce apoptosis of monocyte-derived macrophages (MDMs) infected in vitro with a R5-tropic laboratory strain expressing heat stable antigen, chronically infected U1 cells, and ex-vivo derived MDMs from HIV-infected individuals. To understand the mechanism governing SM-induced cell death, we show that SM-induced cell death of primary HIV-infected macrophages was independent of the acquisition of M1 phenotype following HIV infection of macrophages. Instead, SM-induced cell death was found to be mediated by IAPs as downregulation of IAPs by siRNAs induced cell death of HIV-infected macrophages. Moreover, HIV infection caused receptor interacting protein kinase-1 (RIPK1) degradation which in concert with IAP1/2 downregulation following SM treatment may result in apoptosis of macrophages. Altogether, our results show that SM selectively induce apoptosis in primary human macrophages infected in vitro with HIV possibly through RIPK1. Moreover, modulation of the IAP pathways may be a potential strategy for selective killing of HIV-infected macrophages in vivo.
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Affiliation(s)
- Ramon Edwin Caballero
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada. .,Division of Virology, Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Research Building 2, University of Ottawa, Ottawa, ON, K1H 8L1, Canada.
| | - Simon Xin Min Dong
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Niranjala Gajanayaka
- Division of Virology, Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Research Building 2, University of Ottawa, Ottawa, ON, K1H 8L1, Canada
| | - Hamza Ali
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Division of Virology, Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Research Building 2, University of Ottawa, Ottawa, ON, K1H 8L1, Canada
| | - Edana Cassol
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | - William D Cameron
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Division of Infectious Diseases, The Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Robert Korneluk
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Division of Virology, Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Research Building 2, University of Ottawa, Ottawa, ON, K1H 8L1, Canada
| | - Michel J Tremblay
- Centre de recherche du CHU de Québec-Université Laval, Université Laval, Québec City, QC, Canada
| | - Jonathan B Angel
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Division of Infectious Diseases, The Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Ashok Kumar
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada. .,Division of Virology, Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Research Building 2, University of Ottawa, Ottawa, ON, K1H 8L1, Canada. .,Department of Pathology and Laboratory Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
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4
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Gagnon MF, Lafleur C, Landry-Cuerrier M, Humphries MM, Kimmins S. Torpor expression is associated with differential spermatogenesis in hibernating eastern chipmunks. Am J Physiol Regul Integr Comp Physiol 2020; 319:R455-R465. [PMID: 32783688 DOI: 10.1152/ajpregu.00328.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hibernators suppress physiological processes when expressing torpor, yet little is known about the effects of torpor on male reproductive physiology. Studies of hibernating mammals suggest that deep torpor negatively impacts spermatogenesis and that transitions between torpor and euthermic arousals increase cellular oxidative stress, with potentially damaging effects on sperm. Here, we hypothesize that variation in torpor expression affects the reproductive readiness of hibernators by impacting their sperm production. To test this, we examined the relationship between torpor expression and spermatogenesis in captive eastern chipmunks (Tamias striatus). We determined torpor depth with temperature data loggers and assessed its relationship with spermatogenesis by examining spermatogenic progression, cell division, sperm counts, sperm maturity, and DNA damage. We show that deep hibernators (high levels of torpor) largely halted spermatogenesis in late hibernation in comparison with shallow hibernators (low levels of torpor), where ongoing spermatogenesis was observed. Despite these differences in spermatogenic state during hibernation, spermatogenic progression, sperm numbers, and maturity did not differ in spring, potentially reflecting similar degrees of reproductive readiness. Interestingly, shallow hibernators exhibited higher rates of DNA damage in spermatogenic cells during hibernation, with this trend reversing in spring. Our results thus indicate that once heterothermy is terminated, deep hibernators resume spermatogenesis but are characterized by higher rates of DNA damage in spermatogenic cells at the seasonal stage when spring mating commences. Therefore, our study confirmed posthibernation recovery of sperm production but also a potential impact of deep torpor expression during winter on DNA damage in spring.
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Affiliation(s)
- Marianne F Gagnon
- Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, Québec, Canada
| | - Christine Lafleur
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Québec, Canada
| | - Manuelle Landry-Cuerrier
- Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, Québec, Canada
| | - Murray M Humphries
- Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, Québec, Canada
| | - Sarah Kimmins
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Québec, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada
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5
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Zhu A, Chen M, Zhang X, Storey KB. Gene structure, expression, and DNA methylation characteristics of sea cucumber cyclin B gene during aestivation. Gene 2016; 594:82-88. [PMID: 27601256 DOI: 10.1016/j.gene.2016.09.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/30/2016] [Accepted: 09/02/2016] [Indexed: 10/21/2022]
Abstract
The sea cucumber, Apostichopus japonicus, is a good model for studying environmentally-induced aestivation by a marine invertebrate. One of the central requirements of aestivation is the repression of energy-expensive cellular processes such as cell cycle progression. The present study identified the gene structure of the cell cycle regulator, cyclin B, and detected the expression levels of this gene over three stages of the annual aestivation-arousal cycle. Furthermore, the DNA methylation characteristics of cyclin B were analyzed in non-aestivation and deep-aestivation stages of sea cucumbers. We found that the cyclin B promoter contains a CpG island, three CCAAT-boxes and three cell cycle gene homology regions (CHRs). Application of qRT-PCR analysis showed significant downregulation of cyclin B transcript levels during deep-aestivation in comparison with non-aestivation in both intestine and longitudinal muscle, and these returned to basal levels after arousal from aestivation. Methylation analysis of the cyclin B core promoter revealed that its methylation level showed significant differences between non-aestivation and deep-aestivation stages (p<0.05) and interestingly, a positive correlation between Cyclin B transcripts expression and methylation levels of the core promoter was also observed. Our findings suggest that cell cycle progression may be reversibly arrested during aestivation as indicated by the changes in cyclin B expression levels and we propose that DNA methylation is one of the regulatory mechanisms involved in cyclin B transcriptional variation.
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Affiliation(s)
- Aijun Zhu
- Fisheries College, Ocean University of China, Qingdao, PR China; The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, PR China
| | - Muyan Chen
- Fisheries College, Ocean University of China, Qingdao, PR China; The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, PR China.
| | - Xiumei Zhang
- Fisheries College, Ocean University of China, Qingdao, PR China; The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, PR China
| | - Kenneth B Storey
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
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6
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Ratigan ED, McKay DB. Exploring principles of hibernation for organ preservation. Transplant Rev (Orlando) 2015; 30:13-9. [PMID: 26613668 DOI: 10.1016/j.trre.2015.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 08/19/2015] [Accepted: 08/30/2015] [Indexed: 11/25/2022]
Abstract
Interest in mimicking hibernating states has led investigators to explore the biological mechanisms that permit hibernating mammals to survive for months at extremely low ambient temperatures, with no food or water, and awaken from their hibernation without apparent organ injury. Hibernators have evolved mechanisms to adapt to dramatic reductions in core body temperature and metabolic rate, accompanied by prolonged periods without nutritional intake and at the same time tolerate the metabolic demands of arousal. This review discusses the inherent resilience of hibernators to kidney injury and provides a potential framework for new therapies targeting ex vivo preservation of kidneys for transplantation.
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Affiliation(s)
- Emmett D Ratigan
- Division of Nephrology/Hypertension, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, USA
| | - Dianne B McKay
- Division of Nephrology/Hypertension, Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, USA.
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7
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Sieckmann DG, Jaffe H, Golech S, Cai D, Hallenbeck JM, McCarron RM. Anti-lymphoproliferative activity of alpha-2-macroglobulin in the plasma of hibernating 13-lined ground squirrels and woodchucks. Vet Immunol Immunopathol 2014; 161:1-11. [PMID: 25113962 DOI: 10.1016/j.vetimm.2014.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 03/14/2014] [Accepted: 05/10/2014] [Indexed: 11/19/2022]
Abstract
Plasma from hibernating (HIB) woodchucks (Marmota monax) or 13-lined ground squirrels (Ictidomys tridecemlineatus) suppressed (3)H-thymidine uptake in mouse spleen cell cultures stimulated with Concanavalin A (ConA); plasma from non-hibernating animals were only slightly inhibitory. Maximum inhibition occurred when HIB plasma was added to the cultures prior to ConA. After HPLC size exclusion chromatography of the HIB ground squirrel plasma, a single fraction (fraction-14) demonstrated inhibitory activity. Assay of fraction-14 from 8 HIB squirrels showed inhibition ranging from 13 to 95%; inhibition was correlated to the time the squirrels were exposed to cold prior to hibernation. Western blot analysis showed the factor to be a large molecular weight protein (>300 kDa), and mass spectrometry identified sequences that were 100% homologous with alpha-2-macroglobulin from humans and other species. These findings indicate a hibernation-related protein that may be responsible for immune system down regulation.
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Affiliation(s)
- Donna G Sieckmann
- Naval Medical Research Center, Silver Spring, MD 20910, United States.
| | - Howard Jaffe
- LNC-NINDS Protein/Peptide Sequencing Facility, NINDS, NIH, Bethesda, MD 20892, United States
| | - Susanne Golech
- Naval Medical Research Center, Silver Spring, MD 20910, United States
| | - DeCheng Cai
- Stroke Branch, NINDS, NIH, Bethesda, MD 20892, United States
| | | | - Richard M McCarron
- Naval Medical Research Center, Silver Spring, MD 20910, United States; Department of Pathology, USUHS, Bethesda, MD 20814, United States.
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8
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Biggar KK, Storey KB. Perspectives in cell cycle regulation: lessons from an anoxic vertebrate. Curr Genomics 2011; 10:573-84. [PMID: 20514219 PMCID: PMC2817888 DOI: 10.2174/138920209789503905] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2009] [Revised: 08/04/2009] [Accepted: 08/06/2009] [Indexed: 01/07/2023] Open
Abstract
The ability of an animal, normally dependent on aerobic respiration, to suspend breathing and enter an anoxic state for long term survival is clearly a fascinating feat, and has been the focus of numerous biochemical studies. When anoxia tolerant turtles are faced with periods of oxygen deprivation, numerous physiological and biochemical alterations take place in order to facilitate vital reductions in ATP consumption. Such strategies include reversible post-translational modifications as well as the implementation of translation and transcription controls facilitating metabolic depression. Although it is clear that anoxic survival relies on the suppression of ATP consuming processes, the state of the cell cycle in anoxia tolerant vertebrates remain elusive. Several anoxia tolerant invertebrate and embryonic vertebrate models display cell cycle arrest when presented with anoxic stress. Despite this, the cell cycle has not yet been characterized for anoxia tolerant turtles. Understanding how vertebrates respond to anoxia can have important clinical implications. Uncontrollable cellular proliferation and hypoxic tumor progression are inescapably linked in vertebrate tissues. Consequentially, the molecular mechanisms controlling these processes have profound clinical consequences. This review article will discuss the theory of cell cycle arrest in anoxic vertebrates and more specifically, the control of the retinoblastoma pathway, the molecular markers of cell cycle arrest, the activation of checkpoint kinases, and the possibility of translational controls implemented by microRNAs.
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Affiliation(s)
- Kyle K Biggar
- Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada
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9
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Biggar KK, Storey KB. The emerging roles of microRNAs in the molecular responses of metabolic rate depression. J Mol Cell Biol 2010; 3:167-75. [DOI: 10.1093/jmcb/mjq045] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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10
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Kramarova LI, Ziganshin RK, Gakhova EN. Endogenous hypometabolic-hypothermic factors and their possible application to life in the cold. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2009; 35:597-609. [DOI: 10.1134/s1068162009050021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Biggiogera M, Cisterna B, Spedito A, Vecchio L, Malatesta M. Perichromatin fibrils as early markers of transcriptional alterations. Differentiation 2008; 76:57-65. [PMID: 17697125 DOI: 10.1111/j.1432-0436.2007.00211.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Perichromatin fibrils represent the morphological expression of transcription and co-transcriptional processing of pre-mRNA. They can be considered, hence, an example of work in progress. High resolution techniques such as electron microscopy demonstrate that perichromatin fibrils play a role as early markers of transcriptional alterations. In this paper, we review some experimental and physiological conditions impairing or modulating transcription as well as their effects on perichromatin fibrils. In all the situations reported, perichromatin fibrils show modifications in their amount and/or their associated proteins. Their movements are also affected, as well as their export or their intra-nuclear storage forms. Perichromatin fibrils therefore represent highly sensitive markers not only for monitoring transcriptional and processing rate but also for identifying the maturation level of pre-mRNA/mRNA occurring in the cell nucleus and the functional correlation with the cellular metabolic state.
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Affiliation(s)
- Marco Biggiogera
- Dipartimento di Biologia Animale, Laboratorio di Biologia Cellulare e Neurobiologia, University of Pavia, and Istituto di Genetica Molecolare del C.N.R., Piazza botta 10, 27100 Pavia, Italy.
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12
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Ross AP, Drew KL. Potential for discovery of neuroprotective factors in serum and tissue from hibernating species. Mini Rev Med Chem 2006; 6:875-84. [PMID: 16918494 PMCID: PMC4454377 DOI: 10.2174/138955706777934964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hibernation is a unique phenotype displayed by a phylogenetically diverse group of organisms including several species of mammals and one species of primate. Here we review evidence for blood and tissue borne signaling molecules in hibernating animals, achievements in isolating and characterizing these molecules, and potential medicinal applications.
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Affiliation(s)
- Austin P. Ross
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - Kelly L. Drew
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
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13
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Humphries MM, Thomas DW, Kramer DL. The role of energy availability in Mammalian hibernation: a cost-benefit approach. Physiol Biochem Zool 2003; 76:165-79. [PMID: 12794670 DOI: 10.1086/367950] [Citation(s) in RCA: 296] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2002] [Indexed: 11/03/2022]
Abstract
Hibernation is widely regarded as an adaptation to seasonal energy shortage, but the actual influence of energy availability on hibernation patterns is rarely considered. Here we review literature on the costs and benefits of torpor expression to examine the influence that energy may have on hibernation patterns. We first establish that the dichotomy between food- and fat-storing hibernators coincides with differences in diet rather than body size and show that small or large species pursuing either strategy have considerable potential scope in the amount of torpor needed to survive winter. Torpor expression provides substantial energy savings, which increase the chance of surviving a period of food shortage and emerging with residual energy for early spring reproduction. However, all hibernating mammals periodically arouse to normal body temperatures during hibernation. The function of these arousals has long been speculated to involve recovery from physiological costs accumulated during metabolic depression, and recent physiological studies indicate these costs may include oxidative stress, reduced immunocompetence, and perhaps neuronal tissue damage. Using an optimality approach, we suggest that trade-offs between the benefits of energy conservation and the physiological costs of metabolic depression can explain both why hibernators periodically arouse from torpor and why they should use available energy to minimize the depth and duration of their torpor bouts. On the basis of these trade-offs, we derive a series of testable predictions concerning the relationship between energy availability and torpor expression. We conclude by reviewing the empirical support for these predictions and suggesting new avenues for research on the role of energy availability in mammalian hibernation.
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Affiliation(s)
- Murray M Humphries
- Department of Biology, McGill University, 1205 Avenue Docteur Penfield, Montreal, Quebec H3A 1B1, Canada.
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14
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Affiliation(s)
- R. S. BURTON
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - O. J. REICHMAN
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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15
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Pisu MB, Scherini E, Bernocchi G. Immunocytochemical changes of cytoskeleton components and calmodulin in the frog cerebellum and optic tectum during hibernation. J Chem Neuroanat 1998; 15:63-73. [PMID: 9719360 DOI: 10.1016/s0891-0618(98)00033-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
During hibernation, variation in the metabolism of nerve cells occurs. Since the cytoskeleton plays an important role in nerve cell function, we have analyzed the immunocytochemical expression of two cytoskeleton components, i.e. phosphorylated 200 kDa neurofilament protein, and microtubule-associated protein 2 in the cerebellum and optic tectum of hibernating frogs (Rana esculenta) in comparison with active animals. In addition, we have considered the immunocytochemical expression of calmodulin, which is known to be involved in neurofilament phosphorylation. In hibernating animals, there was a decrease in the immunoreactivity for phosphorylated 200 kDa neurofilament protein and microtubule-associated protein 2 of fibers in both the cerebellum and in the optic tectum. In contrast, in the large neurons of the cerebellum, i.e. Purkinje neurons, there was an increase in the immunoreactivity for microtubule-associated protein 2. The changes in the cytoskeleton components were accompanied by a decrease in calmodulin immunoreactivity in the cytoplasm of nerve cells of the cerebellum. All the changes observed are consistent with a low neuronal activity during hibernation, as also indicated by previous microdensitometric and microfluorometric data. This shows a higher degree of chromatin condensation in hibernating animals and suggests that hibernation represents a simple form of neuronal plasticity.
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Affiliation(s)
- M B Pisu
- Dipartimento di Biologia Animale, Universita' di Pavia, Centro di Studio per l'Istochimica, C.N.R., Italy
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16
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Bernocchi G, Vignola C, Scherini E, Necchi D, Pisu MB. Bioactive peptides and serotonin immunocytochemistry in the cerebral ganglia of hibernatingHelix aspersa. ACTA ACUST UNITED AC 1998. [DOI: 10.1002/(sici)1097-010x(19980401)280:5<354::aid-jez4>3.0.co;2-n] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Yasuma Y, McCarron RM, Spatz M, Hallenbeck JM. Effects of plasma from hibernating ground squirrels on monocyte-endothelial cell adhesive interactions. THE AMERICAN JOURNAL OF PHYSIOLOGY 1997; 273:R1861-9. [PMID: 9435638 DOI: 10.1152/ajpregu.1997.273.6.r1861] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Adhesion and subsequent penetration of leukocytes into central nervous system ischemic tissue proceeds via a coordinated inflammatory mechanism involving adhesion molecules at the blood-endothelium interface. Mammalian hibernation is a state of natural tolerance to severely reduced blood flow-oxygen delivery (i.e., ischemia). Hibernating thirteen-lined ground squirrels were investigated in an attempt to identify factors responsible for regulating this tolerance. Since leukocytopenia is closely associated with entrance into hibernation, the role of leukocyte adhesion to endothelium in this phenomenon was examined. Intercellular adhesion molecule-1 (ICAM-1) is expressed by endothelium and regulates interactions with circulating leukocytes that may result in margination or extravasation. ICAM-1 expression by rat cerebral microvascular endothelial cells (EC) cultured with plasma from hibernating (HP) or nonhibernating (NHP) thirteen-lined ground squirrels was dose dependently increased by HP and, to a lesser extent, by NHP. Treatment of EC with HP coincidentally induced significantly greater increases in monocyte adhesion to EC (37.2%) than were observed with NHP (23.9%). Study of the effects of HP and NHP on monocyte adhesion to EC may identify mechanisms responsible for ischemic tolerance in hibernators and could lead to the development of novel therapeutic approaches to the treatment of stroke.
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Affiliation(s)
- Y Yasuma
- Stroke Branch, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20892, USA
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Zancanaro C, Malatesta M, Vogel P, Fakan S. Ultrastructure of the adrenal cortex of hibernating, arousing, and euthermic dormouse, Muscardinus avellanarius. Anat Rec (Hoboken) 1997; 249:359-64. [PMID: 9372169 DOI: 10.1002/(sici)1097-0185(199711)249:3<359::aid-ar6>3.0.co;2-p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND The adrenal gland is a key organ for hibernation (a condition characterized by striking reduction of body functions). Very limited information is available on the fine structure of the gland during hibernation and on the periodical arousal from hibernation. METHODS Dormice (Muscardinus avellanarius) were maintained in an external animal house and allowed to hibernate spontaneously (November). Arousal was induced in March by exposure to daylight. Euthermic, active dormice were captured in June. The adrenals were taken from four hibernating, three arousing, and four euthermic dormice and processed for resin embedding. The ultrastructure of the adrenal cortex was investigated by transmission electron microscopy. RESULTS In the zona glomerulosa of hibernating and arousing dormice, the smooth endoplasmic reticulum was prominent in comparison with euthermic animals, and mitochondria showed abundant vesicular cristae. The zona fasciculata and zona reticularis did not show consistent differences, apart from a lower cell lipid content in the outer portion of zona fasciculata of arousing dormice. CONCLUSIONS The zona glomerulosa showed signs of increased activity during hibernation. This finding is supported by previous biochemical data demonstrating increased production of renin and aldosterone during such extreme physiological conditions. Activation of the zona glomerulosa in hibernation is probably adaptive to a condition of drastically reduced salt intake.
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Affiliation(s)
- C Zancanaro
- Institute of Anatomy and Histology, University of Verona, Italy.
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Fenoglio C, Scherini E, Necchi D, Soldani C, Bernocchi G. Perineuronal glial system in the cerebral ganglion of active and hibernating Helix aspersa. Tissue Cell 1997; 29:561-72. [DOI: 10.1016/s0040-8166(97)80056-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/1997] [Accepted: 05/12/1997] [Indexed: 10/25/2022]
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Tamburini M, Malatesta M, Zancanaro C, Martin TE, Fu XD, Vogel P, Fakan S. Dense granular bodies: a novel nucleoplasmic structure in hibernating dormice. Histochem Cell Biol 1996; 106:581-6. [PMID: 8985746 DOI: 10.1007/bf02473273] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Dense granular bodies (DGB) are particular structural constituents observed in cell nuclei of different tissues-liver, pancreas, brown adipose tissue, adrenal cortex-of hibernating dormice. They appear as strongly electron-dense clusters of closely packed granules, with thin fibrils spreading out at their periphery. DGB always occur in the nucleoplasm, sometimes making contact with other nuclear structural constituents typical of the hibernating state, such as coiled bodies, amorphous bodies and nucleoplasmic fibrils. DGB are present only during deep hibernation and rapidly disappear upon arousal from hibernation. Cytochemical and immunocytochemical analyses showed that DGB contain ribonucleoproteins and several nucleoplasmic RNA processing factors, suggesting that DGB can represent accumulation sites of splicing factors which are provided to splicing sites when normal metabolic activity is rapidly restored during arousal.
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Affiliation(s)
- M Tamburini
- Centre of Electron Microscopy, University of Lausanne, Switzerland
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21
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Malatesta M, Zancanaro C, Tamburini M, Martin TE, Fu XD, Vogel P, Fagan S. Novel nuclear ribonucleoprotein structural components in the dormouse adrenal cortex during hibernation. Chromosoma 1995; 104:121-8. [PMID: 8585989 DOI: 10.1007/bf00347694] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Adrenocortical cell nuclei of the dormouse Muscardinus avellanarius were investigated by electron microscopic immunocytochemistry in hibernating, arousing and euthermic individuals. While the basic structural constituents of the cell nucleus did not significantly modify in the three groups, novel structural components were found in nuclei of hibernating dormice. Lattice-like bodies (LBs), clustered granules (CGs), fibrogranular material (FGM) and granules associated with bundles of nucleoplasmic fibrils (NF) all contained ribonucleoproteins (RNPs), as shown by labeling with anti-snRNP (small nuclear RNP), anti-m3G-capped RNA and anti-hnRNP (heterogeneous nuclear RNP) antibodies. Moreover, the FGM also showed immunoreactivity for the proliferation associated nuclear antigen (PANA) and the non-snRNP splicing factor SC-35. All these nuclear structural components disappeared early during arousal and were not found in euthermic animals. These novel RNP-containing structures, which have not been observed in other tissues investigated so far in the same animal model, could represent storage and/or processing sites for pre-mRNA during the extreme metabolic condition of hibernation, to be quickly released upon arousal. NFs, which had been sometimes found devoid of associated granules in nuclei of brown adipose tissue from hi-bernating dormice, were present in much higher amounts in adrenocortical cell nuclei; they do not contain RNPs and their role remains to be elucidated. The possible roles of these structures are discussed in the frame of current knowledge of morpho-functional relationships in the cell nucleus.
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Affiliation(s)
- M Malatesta
- Centre of Electron Microscopy, University of Lausanne, 27 Bugnon, CH-1005 Lausanne, Switzerland
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22
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Abstract
1. Cell renewal in hibernators undergoes seasonal rhythm independent of the hibernation state. 2. We propose that seasonal depression of cell renewal in tissues of hibernators is caused by seasonal involution of thymus in these animals. 3. The latter is known to be involved in the control of cell proliferation. 4. The state of hibernation per se has also an effect on cellular proliferation. 5. It induces the block of cells in the permitotic phase. It is suggested that the blockage of cells in renewing tissues of hibernators under natural deep hypothermia throughout a period of torpidity represents the adaptive reaction of the organism.
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Affiliation(s)
- I I Kruman
- Institute of Theoretical and Experimental Biological Physics, U.S.S.R., Academy of Sciences, Pushchino
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23
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Barni S, Nano R, Bertone V, Prosperi E. Ultrastructure and cytochemistry of circulating erythrocytes during the annual cycle of Rana esculenta L. ACTA ACUST UNITED AC 1992. [DOI: 10.1007/bf00426172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Barni S, Bernocchi G. Internalization of erythrocytes into liver parenchymal cells in naturally hibernating frogs (Rana esculenta L.). THE JOURNAL OF EXPERIMENTAL ZOOLOGY 1991; 258:143-50. [PMID: 2022945 DOI: 10.1002/jez.1402580202] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Mature and intact red blood cells were found in hepatocytes of frogs during natural underground hibernation. No signs of erythrophagocytosis, e.g., separating membranes between erythrocyte and hepatocyte cytoplasm, and lysosomes, were observed. Red blood cells probably penetrated into hepatocytes by ameboid-like mechanisms, which can be deduced by cytoplasmic protrusions and invaginations. Most of the hepatocytes had large amounts of stored glycogen and few organelles, often segregated in condensed areas. The narrowed bile canalicular lumens without lysosomes and exocytotic vacuoles around them and the reduction of the Disse spaces indicate a low metabolic activity of liver during natural hibernation. The dramatic accumulation of red cells in the hepatocytes of hibernating frogs could share similarities with the phenomenon of internalization of leucocytes into epithelial cells of some vertebrate's tissues via emperipolesis, the mechanisms of which are not well understood.
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Affiliation(s)
- S Barni
- Istituto di Fisiologia Generale e Chimica Biologica, Universita di Sassari, Italy
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25
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Bernocchi G, Scherini E, Giacometti S, Mares V. Premitotic DNA synthesis in the brain of the adult frog (Rana esculenta L.): an autoradiographic 3H-thymidine study. Anat Rec (Hoboken) 1990; 228:461-70. [PMID: 2285163 DOI: 10.1002/ar.1092280413] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Replicative synthesis of DNA in the brain of the adult frog was studied by light microscope autoradiography. Animals collected during the active period (May-June) and in hibernation (January) were used. In active frogs, 3H-thymidine labelling occurred mainly in the ependymal cells which line the ventricles. The mean labelling index (LI%) was higher in the ependyma of the lateral and fourth ventricles than in the ependyma of the lateral diencephalon and tectal parts of the mesencephalon. In the recessus infundibularis and preopticus the number of labelled cells (LCs) was several times greater than in the lateral parts of the third ventricle. LCs were seen subependymally only occasionally. The incidence of LCs in the parenchyma of the brain was much lower in most regions than in the ventricular ependyma; LCs were mainly small and, from their nuclear morphology, they were glial cells. The LI% reached the highest value in the septum hippocampi and in the nucleus entopeduncularis. In these locations, LCs were larger and closer in size to the nerve cells of these regions. From comparison with data obtained earlier in the brain of mammals, it is evident that the distribution of proliferating cells in the olfactory and limbic system is phylogenetically conservative. The occurrence of pyknotic cells in the same areas which contain LCs, suggests that cell division reflects in part the process of cell renewal observed in mammals. However, proliferating cells could also be linked to the continuous growth observed in non-mammalian vertebrates. In hibernating frogs, LCs and pyknoses were not seen or were found occasionally, which further indicates the functional significance of both processes.
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Affiliation(s)
- G Bernocchi
- Department of Animal Biology, University of Pavia, Italy
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Gomot P, Griffond B, Gomot L. Action de la temperature sur la synthese d'adn des cellules males et la spermatogenese d'Helix aspersa en hibernation. J Therm Biol 1990. [DOI: 10.1016/0306-4565(90)90013-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Vinogradova MS. Mitotic activity of stomach epithelium in the ground squirrel, Citellus erythrogenys Brandt. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A, COMPARATIVE PHYSIOLOGY 1988; 91:235-9. [PMID: 2904339 DOI: 10.1016/0300-9629(88)90410-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
1. During hibernation the epithelial cells of the stomach in ground squirrels divide upon spontaneous emergence from hibernation. In torpor periods, mitoses are blocked up. 2. In animals which have come out of hibernation in spring, one peak of mitosis has been recorded in the first few hours after emergence, and another 3 or 4 days later. 3. In summer the mitotic index is low.
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28
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Kruman II, Ilyasova EN, Rudchenko SA, Khurkhulu ZS. The intestinal epithelial cells of ground squirrel (Citellus undulatus) accumulate at G2 phase of the cell cycle throughout a bout of hibernation. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A, COMPARATIVE PHYSIOLOGY 1988; 90:233-6. [PMID: 2900117 DOI: 10.1016/0300-9629(88)91109-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
1. The mitotic index was found to be greatly reduced in the intestinal crypt cells of ground squirrel during bout of hibernation. The percentage of mitosis rose abruptly at least 2 hr after arousal. 2. An increase in the number of G2 cells was found in the intestinal tract of ground squirrel during bouts of hibernation. 3. The conclusion can be drawn that the cells are progressing steadily through the cell cycle. The cells accumulate at G2 in hibernation. 4. It was assumed that the block in G2 prevents the cells from possible damage in mitosis under hypothermia accompanying hibernation and, therefore, it represents an adaptive reaction.
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Affiliation(s)
- I I Kruman
- Institute of Experimental Cardiology, Academy of Medical Sciences, Moscow, USSR
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29
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Barni S, Bernocchi G, Gerzeli G. Nuclear changes and morphology of the epidermis in the hibernating frog. Tissue Cell 1987; 19:817-25. [PMID: 3501909 DOI: 10.1016/0040-8166(87)90022-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Cytochemical changes of chromatin and DNA in frog epidermal cells were correlated with some morphological features to investigate the skin physiology during hibernation in comparison with the active period. The epidermal cells of hibernating frogs showed less condensed chromatin in all the layers; a greater loss of DNA was found during the transition from the middle to the superficial layer. In the germinative layer, a lesser frequency of hyperdiploid cells and a remarkably low amount of mitoses were detected; this is accompanied by the increase of epidermal thickness and the presence of two layers of cornified cells. The slowing of tissue differentiation and cell renewal kinetics during hibernation can be related to lowered activity of the frog skin. Further, the smaller intercellular spaces as well as the scarcity of puffed ER and vacuoles may be indicative of a lower ion transport in epidermal cells during hibernation.
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Affiliation(s)
- S Barni
- Instito di Fisiologia Generale e Chimica Biologica, Universita di Sassari, Italy
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30
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Kruman II, Kolaeva SG, Iljasova EN, Zubrikhina GN, Khachko VN, Petrova AS. Seasonal variations of DNA synthesis in intestinal epithelial cells of hibernating animals--I. DNA synthesis in intestinal epithelial cells of ground squirrel (Citellus undulatus) during deep hibernation. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1986; 83:173-7. [PMID: 3943302 DOI: 10.1016/0305-0491(86)90349-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The conditions for obtaining crypt cells from ground squirrel small intestine were chosen which allow flow-through cytofluorometric analysis of the DNA synthesis of this tissue. DNA synthesis was found to be greatly reduced in the intestinal crypt cells of ground squirrel during deep hibernation in torpid animals, in animals during spontaneous arousals and in animals prevented from hibernation. The conclusion is made about endogenous control of the DNA synthesis in the cells of true hibernators.
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Doty SB, Nunez EA. Activation of osteoclasts and the repopulation of bone surfaces following hibernation in the bat, Myotis lucifugus. Anat Rec (Hoboken) 1985; 213:481-95. [PMID: 4083529 DOI: 10.1002/ar.1092130403] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In previous studies of the adult bat, Myotis lucifugus, bone loss that occurred during the hibernating period was attributed to osteocytic osteolysis, rather than osteoclastic activity. We have used histochemistry and light and electron microscopy to determine the functional state of the skeleton during the hibernating period. We find that during hibernation the marrow cavity of the long bones is filled with lipid deposits interspersed with vascular sinusoids containing mononuclear cells and red blood cells. The lipid deposits are found within fat cells and at extracellular sites. Hematopoietic cells are absent, osteoclasts are absent, and the bone surfaces are covered with quiescent bone-lining cells. Osteocytes retain their structural integrity and maintain canalicular systems with the bone lining cells and with other osteocytes. During the arousal period, osteoclasts reappear on the bone surface, followed in time by increased numbers of osteoblast-like cells. Perivascular cells undergo structural hypertrophy. Many mononuclear cells are now found in extravascular sites. The lipid content in the marrow is gradually reduced and replaced by hematopoietic cells. Each of these events occurs in a repeatable sequence that is related to the state of hibernation of Myotis lucifugus.
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32
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Kramarova LI, Kolaeva SH, Rozhanets VV. Content of DSIP, enkephalins and ACTH in some tissues of active and hibernating ground squirrels (Citellus suslicus). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. C, COMPARATIVE PHARMACOLOGY AND TOXICOLOGY 1983; 74:31-3. [PMID: 6132770 DOI: 10.1016/0742-8413(83)90143-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Seasonal changes in the amount of DSIP-like material have been measured in extracts from the brain of Citellus suslicus. 2. Analysis of extracts from the brain of deeply sleeping ground squirrels shows that the level of enkephalin-like material reliably increases while that of ACTH-like material decreases. 3. It is concluded that the opiate brain activation system is among the factors participating in the induction of hibernation in ground squirrels.
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33
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Vinogradova MS. Annual cycle of changes in mitotic activity of the gastric mucosal epithelium in hibernating rodents. Bull Exp Biol Med 1982. [DOI: 10.1007/bf00830788] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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