1
|
Takeuchi I, Muramatsu KI, Ota S, Yanagawa Y. A Case of Isolated Right Lung Edema and Liver Injury Induced by High Altitude. J Emerg Trauma Shock 2023; 16:71-72. [PMID: 37583381 PMCID: PMC10424744 DOI: 10.4103/jets.jets_139_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/25/2022] [Indexed: 08/17/2023] Open
Affiliation(s)
- Ikuto Takeuchi
- Department of Acute Critical Care Medicine, Shizuoka Hospital, Juntendo University, Izunokuni, Japan
| | - Ken-Ichi Muramatsu
- Department of Acute Critical Care Medicine, Shizuoka Hospital, Juntendo University, Izunokuni, Japan
| | - Soichiro Ota
- Department of Acute Critical Care Medicine, Shizuoka Hospital, Juntendo University, Izunokuni, Japan
| | - Youichi Yanagawa
- Department of Acute Critical Care Medicine, Shizuoka Hospital, Juntendo University, Izunokuni, Japan
| |
Collapse
|
2
|
Akin S, Bastug M, Colak R, Ficicilar H, Saglam BS, Kosar NS, Demirel H. Possible Adaptation of the Adrenal Gland Hsp72 Expression to Hypoxic Stress. High Alt Med Biol 2021; 22:293-299. [PMID: 34191602 DOI: 10.1089/ham.2021.0025] [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] [Indexed: 11/12/2022] Open
Abstract
Akin, Senay, Metin Bastug, Ridvan Colak, Hakan Ficicilar, Betul Simten Saglam, Nazan S. Kosar, and Haydar Demirel. Possible adaptation of the adrenal gland Hsp72 expression to hypoxic stress. High Alt Med Biol. 00:000-000, 2021. Background: Adrenal glands play a central role in the general response to stress and controlling wholebody homeostasis. One of the most severe environmental stresses encountered by high-altitude climbers is hypoxia. Since the 72 kDa heat shock protein (Hsp72) has a critical role in cellular homeostasis, regulation of Hsp72 in adrenal glands seems to be crucial for maintaining cellular integrity of the gland and sustaining an adequate whole-body stress response in a hypoxic environment. Therefore, this study investigated if 15 days of hypoxia results in the induction of Hsp72 in adrenal glands. In addition, we examined whether heat treatment had any effect on adrenal Hsp72 expression to hypoxia, as cellular and systemic physiological cross-adaptation was suggested between heat stress and hypoxic stress. Materials and Methods: Male 4-month-old Wistar rats were randomly assigned to one of the four experimental groups (n = 8 each group): (1) control (C), (2) heat treatment (15H), (3) heat treatment and 15 days of normobaric hypoxia (15HHp), and (4) 15 days of normobaric hypoxia (15Hp). Three one-hour heat treatment sessions at 41°C were applied on the first two days before hypoxic exposure and on the day 7. Hypoxic exposure was consisting of normobaric hypoxia containing 9.7% O2. Results: Fifteen days of hypoxia did not increase the adrenal Hsp72 levels (p = 0.99). Furthermore, when hypoxia was added to the heat treatment, heat-related increases in adrenal Hsp72 levels disappeared. Adrenal weight to body weight ratio was not different among groups (p = 0.11). Plasma corticosterone levels were significantly lower in all experimental groups compared with control (p < 0.05), and addition of hypoxia resulted in further significant reduction of the plasma corticosterone levels (C > 15H>15HHp >15Hp; p < 0.05). Conclusions: These data demonstrate the adaptation of the adrenal gland to 15-day chronic normobaric hypoxic stress as well as possible cross-adaptation between heat and hypoxic stress in the adrenal gland.
Collapse
Affiliation(s)
- Senay Akin
- Department of Exercise and Sport Physiology, Faculty of Sport Sciences, Hacettepe University, Ankara, Turkey
| | - Metin Bastug
- Department of Physiology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Ridvan Colak
- School of Physical Education and Sport, Ardahan University, Ardahan, Turkey
| | - Hakan Ficicilar
- Department of Physiology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | | | - Nazan S Kosar
- Department of Nutrition and Metabolism in Exercise, Faculty of Sport Sciences, Hacettepe University, Ankara, Turkey
| | - Haydar Demirel
- Department of Exercise and Sport Physiology, Faculty of Sport Sciences, Hacettepe University, Ankara, Turkey
- Department of Sports Medicine, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| |
Collapse
|
3
|
Nguyen VC, Deck CA, Pamenter ME. Naked mole rats reduce the expression of ATP-dependent but not ATP-independent heat shock proteins in acute hypoxia. J Exp Biol 2019; 222:jeb.211243. [DOI: 10.1242/jeb.211243] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/18/2019] [Indexed: 01/02/2023]
Abstract
Naked mole rats (NMRs) are one of the most hypoxia-tolerant mammals identified and putatively experience intermittent and severe hypoxia in their underground burrows. Systemic physiological adaptions to hypoxia have begun to be investigated in this species; however, the cellular adaptations that underlie this tolerance remain poorly understood. Hypoxia compromises cellular energy production; and the maintenance of protein integrity when ATP generation is limited poses a major challenge. Heat shock proteins (HSPs) are cellular chaperones that are cytoprotective during hypoxia and we hypothesized that their expression would increase during acute hypoxia in NMRs. To test this hypothesis, we used qPCR and Western blot approaches to measure changes in gene and protein expression, respectively, of HSP27, HSP40, HSP70, and HSP90 in the brain, heart, liver, and temporalis muscle from NMRs following exposure to normoxia (21% O2) or hypoxia (7% O2 for 4, 12, or 24 hrs). Contrary to our expectations, we observed significant global reductions of ATP-dependant HSP70 and HSP90 (83% and 78%, respectively) after 24 hrs of hypoxia. Conversely, the expression of ATP-independent HSP27 and HSP40 proteins remained constant throughout the 24-hr hypoxic treatment in brain, heart and muscle. However, with prolonged hypoxia (24 hrs), the expression of HSP27 and HSP40 genes in these tissues was also reduced, suggesting that the protein expression of these chaperones may also eventually decrease in hypoxia. These results suggest that energy conservation is prioritized over cytoprotective protein chaperoning in NMR tissues during acute hypoxia. This unique adaptation may help NMRs to minimize energy expenditure while still maintaining proteostasis in hypoxia.
Collapse
Affiliation(s)
- Vu Chau Nguyen
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Courtney A. Deck
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
- North Carolina State University, Raleigh, North Carolina, USA
| | - Matthew E. Pamenter
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
- University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada
| |
Collapse
|
4
|
Wang PF, Zeng S, Xu P, Zhou L, Li GF. Two HSP90 genes in mandarin fish Siniperca chuatsi: identification, characterization and their specific expression profiles during embryogenesis and under stresses. FISH PHYSIOLOGY AND BIOCHEMISTRY 2016; 42:1123-1136. [PMID: 26820141 DOI: 10.1007/s10695-016-0202-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/17/2016] [Indexed: 06/05/2023]
Abstract
HSP90 plays important roles in multiple cellular stress responses. Here, two cytoplasmic HSP90 isoforms, ScHSP90α and ScHSP90β, were identified from Siniperca chuatsi. Their cDNA and gDNA structures, amino acid sequence features, and sequence identities and phylogenetic analysis with other species were described. Their expression profiles during embryonic development in different tissues and under stressful conditions were analyzed using real-time quantitative PCR. During embryogenesis, transcripts of both genes were detected at low levels during the early developmental stages and were up-regulated from appearance of myomere for ScHSP90a and closure of blastopore for ScHSP90β. ScHSP90α showed a tissue-specific variation with high expression in ovary and brain under non-stressed conditions, while ScHSP90β was ubiquitously highly expressed in different tissues. Acute heat shock resulted in a strong up-regulation of ScHSP90α in heart, liver, and head kidney, while it only weakly induced ScHSP90β in these tissues. ScHSP90α was also markedly induced in liver in a time-dependent manner under hypoxia, while the expression of ScHSP90β was not affected by hypoxia. Additionally, Aeromonas hydrophila infection markedly augmented ScHSP90α in head kidney and spleen and mildly up-regulated ScHSP90β in spleen, while suppressing ScHSP90β in head kidney. These results suggest that ScHSP90α and ScHSP90β are differently involved in embryogenesis and under different environmental conditions including high temperature, hypoxia, and bacterial infection. This study will benefit to further clarify the roles of fish HSP90 isoforms in embryogenesis and under stressful conditions and contribute to further study on enhancing stress tolerance and disease resistance of mandarin fish.
Collapse
Affiliation(s)
- Peng-Fei Wang
- Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yatsen University, Guangzhou, 510006, China
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, The South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, 510275, China
| | - Shuang Zeng
- Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yatsen University, Guangzhou, 510006, China
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, 510275, China
| | - Peng Xu
- Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yatsen University, Guangzhou, 510006, China
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, 510275, China
| | - Lei Zhou
- Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yatsen University, Guangzhou, 510006, China
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, 510275, China
| | - Gui-Feng Li
- Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yatsen University, Guangzhou, 510006, China.
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou, 510275, China.
| |
Collapse
|
5
|
Brazilian Pampa Biome Honey Protects Against Mortality, Locomotor Deficits and Oxidative Stress Induced by Hypoxia/Reperfusion in Adult Drosophila melanogaster. Neurochem Res 2015; 41:116-29. [DOI: 10.1007/s11064-015-1744-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/17/2015] [Accepted: 10/19/2015] [Indexed: 01/02/2023]
|
6
|
Yu R, Huang Y, Zhang X, Zhou Y. Potential role of neurogenic inflammatory factors in the pathogenesis of vitiligo. J Cutan Med Surg 2012; 16:230-44. [PMID: 22784515 DOI: 10.1177/120347541201600404] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Vitiligo is a highly complex multifactorial condition of the skin that has an unclear mechanism of pathogenesis. OBJECTIVE This review summarizes the role of various neurogenic inflammatory factors significantly upregulated in vitiligo. METHODS A literature review was conducted of all pertinent data regarding neuropeptides that are altered in vitiligo and their possible role in the destruction of melanocytes. RESULTS The close associations between the skin, immune system, and nervous system, along with specific changes demonstrated in vitiligo patients, support a pathogenic mechanism of vitiligo that involves neuroimmunologic factors, the release of which can be governed by mental stress. CONCLUSION Neuropeptides and nerve growth factors are critical regulators of emotional response and may precipitate the onset and development of vitiligo in certain predisposed individuals. More studies are required to investigate whether a direct link exists between genetics, mental stress, and neurogenic factors in vitiligo.
Collapse
Affiliation(s)
- Richard Yu
- Molecular Medicine Laboratory and Chieng Genomics Centre, Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC
| | | | | | | |
Collapse
|
7
|
Lacetera N, Bernabucci U, Scalia D, Basiricò L, Morera P, Nardone A. Heat stress elicits different responses in peripheral blood mononuclear cells from Brown Swiss and Holstein cows. J Dairy Sci 2008; 89:4606-12. [PMID: 17106092 DOI: 10.3168/jds.s0022-0302(06)72510-3] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study was undertaken to assess whether peripheral blood mononuclear cells (PBMC) isolated from Brown Swiss (Br) and Holstein (Ho) cows and stimulated with concanavalin A differ in response to chronic exposure to incubation temperatures simulating conditions of hyperthermia. Five multiparous Br and 5 Ho cows were utilized as blood donors. Peripheral blood mononuclear cells were subjected for 65 h to each of 5 treatments (T). Cells were exposed to 39 degrees C continuously (T39) and three 13-h cycles at 40 (T40), 41 (T41), 42 (T42) or 43 degrees C (T43), respectively, which were interspersed with two 13-h cycles at 39 degrees C. Treatment T39 was adopted to mimic normothermia; T40, T41, T42, and T43 mimicked conditions of more severe hyperthermia alternating with normothermia. Measures evaluated at the end of the incubation period were proliferative response (DNA synthesis), intracellular reactive oxygen species (ROS) concentrations, and mRNA abundance of the 72-kDa heat-shock protein (Hsp72). In Br cows, DNA synthesis began to decline when PBMC were repeatedly exposed to 41 degrees C (-22%), whereas DNA synthesis in cells isolated from Ho cows did not begin to decline until 42 degrees C (-40%). Furthermore, under T41 and T42, DNA synthesis from Br cows was lower than in Ho(-24 and -54%, respectively). In both breeds, increased incubation temperatures caused a reduction of intracellular ROS (from -39.6 and -69.7%). Increase in incubation temperatures enhanced Hsp72 mRNA levels only in PBMC isolated from Br cows. The Hsp72 mRNA in Br cows increased significantly under T41 and T43 compared with T39. In both breeds, DNA synthesis was positively and negatively correlated with intracellular ROS and Hsp72 mRNA abundance, respectively (r = 0.85 and r = -0.70, respectively). Results indicated that PBMC from Br cows are less tolerant to chronic heat exposure than those from Ho cows, and that the lower tolerance is associated with higher expression of Hsp72, suggesting that the same level of hyperthermia may be associated with a differential decline of immune function in the 2 breeds.
Collapse
Affiliation(s)
- N Lacetera
- Dipartimento di Produzioni Animali, Università degli Studi della Tuscia, Via San Camillo de Lellis, 01100 Viterbo, Italy.
| | | | | | | | | | | |
Collapse
|