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Oghbaei H, Hosseini L, Farajdokht F, Rahigh Aghsan S, Majdi A, Sadigh-Eteghad S, Sandoghchian Shotorbani S, Mahmoudi J. Heat stress aggravates oxidative stress, apoptosis, and endoplasmic reticulum stress in the cerebellum of male C57 mice. Mol Biol Rep 2021; 48:5881-5887. [PMID: 34338963 DOI: 10.1007/s11033-021-06582-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 07/20/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND The current study was set to assess the effect of heat stress exposure on oxidative stress, apoptosis, and endoplasmic reticulum stress markers in the cerebellum of male mice. METHODS Fifty male C57BL/6 mice were assigned to five groups of (I) control, (II) heat stress (HS)7, (III) HS14, (IV) HS21, and (V) HS42 groups. Animals in the control group were not exposed to HS. Mice in the II-V groups were exposed to HS once a day over 7, 14, 21, and 42 days, respectively. Cerebellar reactive oxygen species (ROS) levels, expression of heat shock protein (HSP)70 and caspase 3 as well as endoplasmic reticulum stress-related proteins (PERK, p-PERK, CHOP, and Full-length ATF-6) expression were determined on the 7th, 14th, 21st, and 42nd days. RESULTS ROS levels and HSP70 expression increased following HS on the 14th, 21st, and 42nd days and the 7th, and 14th days with a peak level of expression on the 14th day following HS. HSP70 levels decreased afterward on the 21st and 42nd days compared with the control group. Besides, exposure to HS for 14, 21, and 42 days resulted in a significant increase in the CHOP and p-PERK levels in the cerebellum compared with the control group. Heat exposure also increased protein expression of cleaved caspase 3 and active ATF-6/Full-length ATF-6 on the 21st and 42nd days in the cerebellum compared with the control animals. CONCLUSION These findings indicated that chronic HS augmented oxidative stress, endoplasmic reticulum stress, and apoptosis pathways in the cerebellum of mice.
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Affiliation(s)
- Hajar Oghbaei
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran.,Deptartment of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Hosseini
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran.,Deptartment of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fereshteh Farajdokht
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran.,Deptartment of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sepideh Rahigh Aghsan
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran
| | - Alireza Majdi
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran
| | - Saeed Sadigh-Eteghad
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran
| | | | - Javad Mahmoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, 51666-14756, Tabriz, Iran.
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2
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Belon L, Skidmore P, Mehra R, Walter E. Effect of a fever in viral infections — the ‘Goldilocks’ phenomenon? World J Clin Cases 2021; 9:296-307. [PMID: 33521098 PMCID: PMC7812885 DOI: 10.12998/wjcc.v9.i2.296] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 11/23/2020] [Accepted: 12/10/2020] [Indexed: 02/06/2023] Open
Abstract
Acute infections, including those due to Coronaviridae and other viruses, often stimulate a febrile response. A mild fever appears to improve outcome; it appears to diminish viral replication by several mechanisms, including virion entry into host cells and genome transcription, and improving host defence mechanisms against the pathogen. However, a fever may also damage host cellular and tissue function and increase metabolic demands. At temperatures at the lower end of the febrile range, the benefit of the fever appears to outweigh the detrimental effects. However, at higher temperatures, the outcome worsens, suggesting that the disadvantages of fever on the host predominate. A non-infective fever is associated with a worse outcome at lower temperatures, suggesting that hyperthermia carries less benefit in the absence of infection. This review discusses the risks and benefits of a fever on the host response, focusing on the effects of a fever on viral replication and host response, and the detrimental effect on the host.
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Affiliation(s)
- Lucas Belon
- Department of Intensive Care Medicine, Royal Surrey County Hospital, Guildford GU2 7XX, Surrey, United Kingdom
| | - Peter Skidmore
- Department of General Medicine, Royal Surrey County Hospital, Guildford GU2 7XX, Surrey, United Kingdom
| | - Rohan Mehra
- Department of General Medicine, Royal Surrey County Hospital, Guildford GU2 7XX, Surrey, United Kingdom
| | - Edward Walter
- Department of Intensive Care Medicine, Royal Surrey County Hospital, Guildford GU2 7XX, Surrey, United Kingdom
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3
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McCormick JJ, Dokladny K, Moseley PL, Kenny GP. Autophagy and heat: a potential role for heat therapy to improve autophagic function in health and disease. J Appl Physiol (1985) 2021; 130:1-9. [DOI: 10.1152/japplphysiol.00542.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Autophagy is a crucial cell survival mechanism that involves the degradation and recycling of old or damaged organelles and proteins to maintain cellular homeostasis. Impairments in autophagy are central to the pathogenesis of many conditions including metabolic and neurodegenerative disorders, cardiovascular and pulmonary diseases, diabetes, and aging. Although various pharmacological agents may be able to stimulate autophagic function, to our knowledge, few interventions exist that have been deemed safe and effective in humans. An emerging body of evidence suggests that targeting the autophagic pathway via passive heating (heat therapy) may stimulate autophagic function. Therefore, the primary focus of the present review is to analyze the mechanisms in which passive heating induces autophagy as defined by in vitro and in vivo (animal and human) models. Our secondary focus is to examine the implications of utilizing passive heating to restore dysfunctional autophagy in chronic disease and aging. Finally, we discuss potential therapeutic strategies to implement passive heating to stimulate autophagic function in humans.
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Affiliation(s)
- James J. McCormick
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Karol Dokladny
- Department of Internal Medicine, The University of New Mexico, Albuquerque, New Mexico
| | - Pope L. Moseley
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Glen P. Kenny
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
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4
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Atta MS, Farrag FA, Almadaly EA, Ghoneim HA, Hafez AS, Al Jaouni SK, Mousa SA, El-Far AH. Transcriptomic and biochemical effects of pycnogenol in ameliorating heat stress-related oxidative alterations in rats. J Therm Biol 2020; 93:102683. [PMID: 33077109 DOI: 10.1016/j.jtherbio.2020.102683] [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: 05/23/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 11/12/2022]
Abstract
BACKGROUND Heat stress is a condition that is due to extreme heat exposure. It occurs when the body cannot keep its temperature healthy in response to a hot climate and associated with oxidative stress. Testicular hyperthermia can induce apoptosis of sperm cells, affect sperm production and decrease sperm concentration, leading to sperm disorder, for this reason, we examined the protective impact of pycnogenol that it has a wide range of biological benefits, including antioxidant, anti-inflammatory and anti-cancer activities against the oxidative alterations that happen in testicular and brain tissues due to heat stress in rats. STUDY DESIGN Forty-eight Wistar male rats, approximately around 6 weeks age were allocated randomly into four groups (12 in each) of control, HS (subjected to heat stress and supplemented orally with 50 mg of pycnogenol/kg b. w./day dissolved in saline for 21 days), and pycnogenol (rats supplemented orally with 50 mg of pycnogenol/kg b. w./day dissolved in saline for 21 days). RESULTS Data revealed a promising role of pycnogenol as an antioxidant, natural product to successfully reverse the heat-induced oxidative alterations in testicular and brain tissues of rats through significant upregulation of superoxide dismutase-2, catalase, reduced glutathione, and anti-apoptotic gene, while downregulating pro-apoptotic, and heat shock protein70. Pycnogenol treatment also reversed the reproductive hormone level and spermatogenesis to their normal values. CONCLUSION Pycnogenol as a natural protective supplement could recover these heat stress-induced oxidative changes in testes and hypothalamus.
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Affiliation(s)
- Mustafa S Atta
- Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - Foad A Farrag
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - Essam A Almadaly
- Department of Theriogenology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - Hanan A Ghoneim
- Department of Physiology, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, Egypt.
| | - Ahmed S Hafez
- Department of Pharmacology, Faculty of Veterinary Medicine, Aswan University, Aswan, 81528, Egypt.
| | - Soad K Al Jaouni
- Hematology/Pediatric Oncology, King Abdulaziz University Hospital and Scientific Chair of Yousef Abdullatif Jameel of Prophetic Medicine Application, Faculty of Medicine, King Abdulaziz University, Jaddah, 21589, Saudi Arabia.
| | - Shaker A Mousa
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Rensselaer, NY, 12144, USA.
| | - Ali H El-Far
- Department of Biochemistry, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, Egypt.
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5
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Elvira R, Cha SJ, Noh GM, Kim K, Han J. PERK-Mediated eIF2α Phosphorylation Contributes to The Protection of Dopaminergic Neurons from Chronic Heat Stress in Drosophila. Int J Mol Sci 2020; 21:ijms21030845. [PMID: 32013014 PMCID: PMC7037073 DOI: 10.3390/ijms21030845] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/23/2020] [Accepted: 01/26/2020] [Indexed: 01/05/2023] Open
Abstract
Environmental high-temperature heat exposure is linked to physiological stress such as disturbed protein homeostasis caused by endoplasmic reticulum (ER) stress. Abnormal proteostasis in neuronal cells is a common pathological factor of Parkinson’s disease (PD). Chronic heat stress is thought to induce neuronal cell death during the onset and progression of PD, but the exact role and mechanism of ER stress and the activation of the unfolded protein response (UPR) remains unclear. Here, we showed that chronic heat exposure induces ER stress mediated by the PKR-like eukaryotic initiation factor 2α kinase (PERK)/eIF2α phosphorylation signaling pathway in Drosophila neurons. Chronic heat-induced eIF2α phosphorylation was regulated by PERK activation and required for neuroprotection from chronic heat stress. Moreover, the attenuated protein synthesis by eIF2α phosphorylation was a critical factor for neuronal cell survival during chronic heat stress. We further showed that genetic downregulation of PERK, specifically in dopaminergic (DA) neurons, impaired motor activity and led to DA neuron loss. Therefore, our findings provide in vivo evidence demonstrating that chronic heat exposure may be a critical risk factor in the onset of PD, and eIF2α phosphorylation mediated by PERK may contribute to the protection of DA neurons against chronic heat stress in Drosophila.
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Affiliation(s)
- Rosalie Elvira
- Soonchunhyang Institute of Medi-bio Science, Soonchunhyang University, Cheonan, Chungcheongnam-do 31151, Korea; (R.E.); (S.J.C.)
| | - Sun Joo Cha
- Soonchunhyang Institute of Medi-bio Science, Soonchunhyang University, Cheonan, Chungcheongnam-do 31151, Korea; (R.E.); (S.J.C.)
| | - Gyeong-Mu Noh
- Department of Medical Biotechnology, Soonchunhyang University, Asan, Chungcheongnam-do 31538, Korea;
| | - Kiyoung Kim
- Department of Medical Biotechnology, Soonchunhyang University, Asan, Chungcheongnam-do 31538, Korea;
- Correspondence: (K.K.); (J.H.); Tel.: +82-41-413-5024 (K.K.); +82-41-413-5027 (J.H.); Fax: +82-41-413-5006 (K.K. & J.H.)
| | - Jaeseok Han
- Soonchunhyang Institute of Medi-bio Science, Soonchunhyang University, Cheonan, Chungcheongnam-do 31151, Korea; (R.E.); (S.J.C.)
- Correspondence: (K.K.); (J.H.); Tel.: +82-41-413-5024 (K.K.); +82-41-413-5027 (J.H.); Fax: +82-41-413-5006 (K.K. & J.H.)
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6
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Erfani M, Ghazi Tabatabaei Z, Sadigh-Eteghad S, Farokhi-Sisakht F, Farajdokht F, Mahmoudi J, Karimi P, Nasrolahi A. Rosa canina L. methanolic extract prevents heat stress-induced memory dysfunction in rats. Exp Physiol 2019; 104:1544-1554. [PMID: 31297904 DOI: 10.1113/ep087535] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 07/09/2019] [Indexed: 12/17/2022]
Abstract
NEW FINDINGS What is the central question of this study? Heat stress has harmful effects on the brain structure and synaptic density via induction of oxidative stress and neuroinflammation, which result in neuronal damage in the hippocampus and thereby cognitive impairments. In this study, we investigate the effect of Rosa canina treatment on cognitive function in heat stress-exposed rats and its underlying mechanisms. What is the main finding and its importance? We show that R. canina improves cognitive deficits induced by heat stress by attenuation of oxidative stress and neuroinflammation and by upregulation of synaptic proteins in the hippocampus. ABSTRACT The aim of the study was to evaluate the effects of aqueous methanolic extract of Rosa canina (RC) dried fruits on oxidative stress, inflammation, synaptic degeneration and memory dysfunction induced by heat stress (HS) in rats. Sixty adult male Wistar rats were randomly divided into five groups as follows: the control group received normal saline (NS); the HS group was exposed to heat stress (43°C) for 15 min once a day for 2 weeks; and HS+R groups were exposed to heat stress and received one of three doses (250, 500 or 1000 mg kg-1 ) of RC methanolic extract for 2 weeks. A passive avoidance test and a Y-maze test were performed to assess learning and memory. The levels of reactive oxygen species were assessed. The serum cortisol concentration and hippocampal total antioxidant capacity, superoxide dismutase and glutathione peroxidase were also detected using spectrophotometry. The protein expressions of c-Fos, heat-shock protein-70, tumour necrosis factor-α, growth-associated protein 43, post-synaptic density-95 and synaptophysin were evaluated in the hippocampal tissue. The results showed that RC significantly improved cognitive dysfunction induced by HS, which was accompanied by downregulation of tumour necrosis factor-α and upregulation of growth-associated protein 43 and synaptophysin proteins in the hippocampus of HS-exposed rats. Furthermore, RC significantly attenuated serum cortisol concentrations and upregulated heat shock protein-70 and c-Fos in the hippocampus. In addition, the administration of RC attenuated reactive oxygen species levels and enhanced antioxidant defense in the hippocampus. These findings indicate that RC attenuated the deleterious effect of HS on cognition through its antioxidant properties and by enhancing synaptic function and plasticity.
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Affiliation(s)
- Marjan Erfani
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Higher Education Institute of Rab-Rashid, Tabriz, Iran
| | | | - Saeed Sadigh-Eteghad
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Fereshteh Farajdokht
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Javad Mahmoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pouran Karimi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ava Nasrolahi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry and Molecular Medicine, School of Medicine, Ilam University of Medical Sciences, Ilam, Iran
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7
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Li H, Liu Y, Wen M, Zhao F, Zhao Z, Liu Y, Lin X, Wang L. Hydroxysafflor yellow A (HSYA) alleviates apoptosis and autophagy of neural stem cells induced by heat stress via p38 MAPK/MK2/Hsp27-78 signaling pathway. Biomed Pharmacother 2019; 114:108815. [PMID: 30954890 DOI: 10.1016/j.biopha.2019.108815] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 01/01/2023] Open
Abstract
This study aimed to explore mechanisms of the effects of hydroxysafflor yellow A (HSYA) on neural stem cells (NSCs) after heat stress (HS). Rat NSCs cells were cultured at 42 °C to impose heat stress. Cell counting kit-8 and Edu assay were used to analyze NSC proliferation. Annexin V/PI apoptosis kit was used to detect NSC apoptosis. Expression and phosphorylation of autophagy and apoptosis-associated proteins were determined by western blotting. We showed that HSYA significantly promoted proliferation and attenuated apoptosis of NSCs after heat stress. HSYA also increased Bcl-2 expression but decreased the expression of Bax and cleaved caspase-3 in NSCs induced by heat stress. In addition, HSYA decreased p38 and Hsp27-78 phosphorylation and MK-2 expression after heat stress, which was consistent with NSCs treated with SB203850 treatment or p38 knockdown. Furthermore, we demonstrated that heat stress increased LC3-II expression and mTOR phosphorylation, and decreased the expression of p62 in NSCs, while HSYA, SB203850 treatment or p38 knockdown reversed these alterations. In conclusion, HSYA significantly reversed the apoptosis and autophagy of NSCs induced by heat stress (P < 0.05), via downregulating MK2 expression and p38 and Hsp27-78 phosphorylation.
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Affiliation(s)
- Hongbo Li
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Yanan Liu
- Department of Intensive Care Unit, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Minyong Wen
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Fu Zhao
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Zhihui Zhao
- Department of Traditional Chinese Medicine Surgery, Jilin People's Hospital, Jilin, 132000, China
| | - Yunsong Liu
- Intensive Care Unit, Clifford Hospital, Guangzhou University of Chinese Medicine, No.3 Hongfu Road, Panyu District, Guangzhou 511495, PR China.
| | - Xinfeng Lin
- Department of Intensive Care Unit, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China.
| | - Lin Wang
- Department of Emergency, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 16 Jichang Road, Baiyun District, Guangzhou, 510405, China.
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8
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Gyongyosi A, Szoke K, Fenyvesi F, Fejes Z, Debreceni IB, Nagy B, Tosaki A, Lekli I. Inhibited autophagy may contribute to heme toxicity in cardiomyoblast cells. Biochem Biophys Res Commun 2019; 511:732-738. [DOI: 10.1016/j.bbrc.2019.02.140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 02/25/2019] [Indexed: 10/27/2022]
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9
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Wang YR, Chen KL, Li CM, Li L, Wang GL. Heme oxygenase 1 regulates apoptosis induced by heat stress in bovine ovarian granulosa cells via the ERK1/2 pathway. J Cell Physiol 2018; 234:3961-3972. [PMID: 30191981 DOI: 10.1002/jcp.27169] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 07/13/2018] [Indexed: 01/03/2023]
Abstract
Heat stress can inhibit follicular development in dairy cows, and thus can affect their reproductive performance. Follicular granulosa cells can synthesize estrogen, that affects the development and differentiation of follicles by apoptosis. Heme oxygenase 1 (HO-1/heat shock protein 32) plays an antiapoptotic and cytoprotective role in various cells during stress-induced apoptosis, but little is known about its definitive function in bovine (ovarian) granulosa cells (bGCs). In our study, the roles and mechanism of HO-1 on the heat stress-induced apoptosis of bGCs were studied. Our results show that the expression of HO-1 was significantly increased under heat stress. Moreover, HO-1 silencing increased apoptosis, whereas its overexpression dampened apoptosis by regulating the expression of Bax/Bcl-2 and the levels of cleaved caspase-3. In addition, HO-1 can also play a cytoprotective role by affecting estrogen levels and decomposing heme to produce biologically active metabolite carbon monoxide (CO). Meanwhile, CO significantly increased the level of HO-1, decreased Bax/Bcl-2 levels, and inhibited the activation of extracellular signal-regulated kinase 1/2 (ERK1/2) signaling pathway. The apoptosis of ovarian GCs can affect the secretion of estrogen and lead to disorder of the ovarian microenvironment, thus affecting the normal function of the ovary. Our results indicate that HO-1 acts as a cytoprotective enzyme and plays a protective role in heat-induced apoptosis of bGCs. In conclusion, HO-1 and its metabolite CO inhibit the apoptosis of bGCs induced by heat stress through the ERK1/2 pathway. The results of this study provide a valuable clue for improving the fertility of heat stressed cows in summer.
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Affiliation(s)
- Yi-Ru Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Kun-Lin Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Cheng-Min Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Lian Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Gen-Lin Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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10
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Zhang QL, Wang W, Alatantuya, Dongmei, Lu ZJ, Li LL, Zhang TZ. Down-regulated miR-187 promotes oxidative stress-induced retinal cell apoptosis through P2X7 receptor. Int J Biol Macromol 2018; 120:801-810. [PMID: 30170060 DOI: 10.1016/j.ijbiomac.2018.08.166] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/24/2018] [Accepted: 08/27/2018] [Indexed: 12/18/2022]
Abstract
Several microRNAs (miRNAs) expressed in the retina were confirmed to involve in retinal cell apoptosis, which was closely linked with the development of retinal diseases. Our previous studies have confirmed a vital role of miR-187 in retinal cells apoptosis. The aim of this study was to further elucidate the precise role of miR-187 and its probable mechanisms in RGC-5 cells apoptosis. The cellular oxidative stress status was assessed by reactive oxygen species (ROS) production and malondialdehyde (MDA) level. Our results showed that the elevated pressure, glutamate and H2O2-induced oxidative stress in RGC-5 cells was accompanied by a decrease in miR-187 expression and an increase in P2X7R expression. However, overexpression of miR-187 reversed this activation of oxidative stress in RGC-5 cells. Moreover, we also revealed that miR-187 inhibited the oxidative stress-induced apoptosis of RGC-5 cells through negative regulating P2X7R, probably through interacting with the 3'UTR of P2X7R. Finally, we confirmed that the forced miR-187 expression alleviated oxidative stress injury in retina tissues of rat models with chronic ocular hypertension. Our data demonstrated that miR-187/P2X7R signaling was involved in retinal cell apoptosis, at least in part, through activating oxidative stress.
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Affiliation(s)
- Qiu-Li Zhang
- Department of Ophthalmology, Affiliated Hospital of Inner Mongolia University for the Nationalities, No. 1742, HuoLinHe Street, Tongliao, Neimenggu 028050, China.
| | - Wei Wang
- Department of Ophthalmology, Tongliao Hospital, No. 668, KeErQin Street, Tongliao, Neimenggu 028000, China
| | - Alatantuya
- Department of Ophthalmology, Affiliated Hospital of Inner Mongolia University for the Nationalities, No. 1742, HuoLinHe Street, Tongliao, Neimenggu 028050, China
| | - Dongmei
- Department of Ophthalmology, Affiliated Hospital of Inner Mongolia University for the Nationalities, No. 1742, HuoLinHe Street, Tongliao, Neimenggu 028050, China
| | - Zhan-Jun Lu
- Department of Ophthalmology, Affiliated Hospital of Inner Mongolia University for the Nationalities, No. 1742, HuoLinHe Street, Tongliao, Neimenggu 028050, China
| | - Lan-Lan Li
- Department of Ophthalmology, Affiliated Hospital of Inner Mongolia University for the Nationalities, No. 1742, HuoLinHe Street, Tongliao, Neimenggu 028050, China
| | - Tian-Zi Zhang
- Department of Ophthalmology, Affiliated Hospital of Inner Mongolia University for the Nationalities, No. 1742, HuoLinHe Street, Tongliao, Neimenggu 028050, China
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11
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Lin YF, Liu TT, Hu CH, Chen CC, Wang JY. Expressions of chemokines and their receptors in the brain after heat stroke-induced cortical damage. J Neuroimmunol 2018; 318:15-20. [PMID: 29395321 DOI: 10.1016/j.jneuroim.2018.01.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 01/06/2018] [Accepted: 01/22/2018] [Indexed: 01/11/2023]
Abstract
Despite growing evidence that cytokines and chemokines are expressed in humans and rats after heat stress, the cellular mechanisms underlying the effects on the brain after heatstroke (HS) are not fully understood. In this study, we observed time course changes of chemokines in rat brain tissues and elucidated what kinds of cortical cells were affected after HS. Male SD rats were anesthetized and randomly separated into two groups as follows: (a) normothermic sham and (b) HS rats. Rats were sacrificed at different time points (0, 1, 3, 6, and 12h after heat exposure, n=5 in each group) to the end of the experiment in order to extract the mRNA/proteins of cortical tissues. Cerebrospinal fluid (CSF) of sham and HS rats was also collected before sacrifice. In the HS group, an elevated body temperature (Tco>40°C) and abnormality of cortical cells (e.g., pyknotic nuclei) were observed. When compared to the sham group, expression levels of either mRNAs or proteins of chemokines and their receptors (including CXCL1, MIP2, MCP1, CXCR1, CXCR2, and CCR2) peaked at different time points after heat exposure. We also found that CXCR2 was expressed in the cortex of rat brain and was colocalized with neurons and microglia after HS. Hence, MCP1, MIP2, and CXCR2 might play important roles in the brain after HS, possibly indicating a new direction for treating HS.
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Affiliation(s)
- Yuh-Feng Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Tsung-Ta Liu
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC; Center for General Education, University of Kang Ning, Taipei, Taiwan, ROC
| | - Chou-Hui Hu
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - Chun-Chi Chen
- Department of Internal Medicine, Division of Nephrology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Jia-Yi Wang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC; Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC.
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12
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Moon M, Huh E, Lee W, Song EJ, Hwang DS, Lee TH, Oh MS. Coptidis Rhizoma Prevents Heat Stress-Induced Brain Damage and Cognitive Impairment in Mice. Nutrients 2017; 9:nu9101057. [PMID: 28946610 PMCID: PMC5691674 DOI: 10.3390/nu9101057] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/14/2017] [Accepted: 09/21/2017] [Indexed: 12/13/2022] Open
Abstract
Heat stress conditions lead to neuroinflammation, neuronal death, and memory loss in animals. Coptidis Rhizoma (CR) exhibits potent fever-reducing effects and has been used as an important traditional medicinal herb for treating fever. However, to date, the effects of antipyretic CR on heat-induced brain damages have not been investigated. In this study, CR significantly reduced the elevation of ear and rectal temperatures after exposure to heat in mice. Additionally, CR attenuated hyperthermia-induced stress responses, such as release of cortisol into the blood, and upregulation of heat shock protein and c-Fos in the hypothalamus and hippocampus of mice. The administration of CR inhibited gliosis and neuronal loss induced by thermal stress in the hippocampal CA3 region. Treatment with CR also reduced the heat stress-induced expression of nuclear factor kappa β, tumor necrosis factor-α, and interleukin-1β (IL-1β) in the hippocampus. Moreover, CR significantly decreased proinflammatory mediators such as IL-9 and IL-13 in the heat-stressed hypothalamus. Furthermore, CR attenuated cognitive dysfunction triggered by thermal stress. These results indicate that CR protects the brain against heat stress-mediated brain damage via amelioration of hyperthermia and neuroinflammation in mice, suggesting that fever-reducing CR can attenuate thermal stress-induced neuropathology.
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Affiliation(s)
- Minho Moon
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Korea.
| | - Eugene Huh
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
- Department of Herbal Pharmacology, College of Korean Medicine, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Wonil Lee
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Eun Ji Song
- Department of Biochemistry, College of Medicine, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, Korea.
| | - Deok-Sang Hwang
- Department of Korean Gynecology, College of Korean Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Tae Hee Lee
- Department of Formulae Pharmacology, School of Oriental Medicine, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam 13120, Korea.
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
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13
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Abass MA, Selim SA, Selim AO, El-Shal AS, Gouda ZA. Effect of orally administered zinc oxide nanoparticles on albino rat thymus and spleen. IUBMB Life 2017; 69:528-539. [PMID: 28589695 DOI: 10.1002/iub.1638] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 04/22/2017] [Indexed: 12/27/2022]
Abstract
This study aimed to evaluate the toxicological effects of oral intake of Zinc oxide nanoparticles (ZnO NPs) on the structure of thymus and spleen. Twenty-four young male Wistar albino rats were assigned into two groups: group I (control) and group II (ZnO NPs treated group).The thymus and spleen were analyzed biochemically, histopathologically and immunohistochemically. After ZnO NPs intake, hematologically, the total leucocytic count was significantly increased while the RBCs and platelets counts and Hb % were significantly decreased. Biochemically, a significant decrease in serum total antioxidant capacity and anti-inflammatory cytokines including interleukin 4 and 10 (IL-4 and IL-10) levels was noted. While a significant increase in splenic and thymic malondialdehyde (MDA) and DNA shearing, as well as the studied proinflammatory cytokines; IL-1β, tumor necrotic factor (TNF-α) and interferon (INF-γ) levels was detected. Notably, we noted upregulation of the immunomodulatory [CD3, CD11b, heme oxygenase (HO-1)] and the inflammatory [toll-like receptor 4 and 6 (TLR4 and TLR6)] genes. Histopathologically, degenerative changes were detected in thymus and spleen of ZnO NPs treated group. While the immunohistochemical analysis of the ZnO NPs treated group revealed a decrease in the number of cells expressed positive reactions of anti-PCNA and an increase in the number of cells expressed positive reaction of anti-p53 in the thymus and spleen. In conclusion, ZnO NPs induced obvious immunotoxicity in the thymus and spleen, where oxidative/inflammatory pathway may be the potential mechanism underlying this immunotoxicity. © 2017 IUBMB Life, 69(7):528-539, 2017.
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Affiliation(s)
- Marwa A Abass
- Department of Forensic Medicine & Clinical Toxicology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Sally A Selim
- Department of Histology & Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Assmaa O Selim
- Department of Histology & Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Amal S El-Shal
- Department of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Zienab A Gouda
- Department of Histology & Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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14
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Abstract
An elevated temperature has many aetiologies, both infective and non-infective, and while the fever of sepsis probably confers benefit, there is increasing evidence that the central nervous system is particularly vulnerable to damage from hyperthermia. A single episode of hyperthermia may cause short-term neurological and cognitive dysfunction, which may be prolonged or become permanent. The cerebellum is particularly intolerant to the effects of heat. Hyperthermia in the presence of acute brain injury worsens outcome. The thermotoxicity involved occurs via cellular, local, and systemic mechanisms. This article reviews both the cognitive and neurological consequences and examines the mechanisms of cerebral damage caused by high temperature.
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Affiliation(s)
- Edward James Walter
- Department of Intensive Care Medicine, Royal Surrey County Hospital, Egerton Road, Guildford, Surrey, GU2 7XX, UK.
| | - Mike Carraretto
- Department of Intensive Care Medicine, Royal Surrey County Hospital, Egerton Road, Guildford, Surrey, GU2 7XX, UK
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15
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Heme oxygenase‑1 protects H2O2‑insulted glomerular mesangial cells from excessive autophagy. Mol Med Rep 2016; 13:5269-75. [PMID: 27122182 DOI: 10.3892/mmr.2016.5177] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 04/08/2016] [Indexed: 11/05/2022] Open
Abstract
Increasing evidence has demonstrated that the activation of heme oxygenase (HO)‑1 reduces autophagy stimulated by oxidative stress injury, in which the supraphysiological production of reactive oxygen species (ROS) is detected. However, the potential mechanism underlying this effect remains unclear. The present study aimed to investigate the function of HO‑1 activation in the regulation of autophagy in glomerular mesangial cells subjected to H2O2‑induced oxidative stress injury. The results demonstrated that the HO‑1 agonist, hemin, reduces the LC3 protein level, which was enhanced by H2O2 treatment. Furthermore, hemin‑activated HO‑1 may function as a regulator of oxidative stress‑induced autophagy in a dose‑dependent manner. Pharmacological activation of c‑Jun N‑terminal kinase (JNK) inhibited the effect of hemin, indicating that the JNK signaling pathway is associated with the mechanism of HO‑1 in impeding excessive autophagy. In addition to successfully alleviating H2O2‑induced oxidative stress and cellular apoptosis, hemin‑activated HO‑1 may provide cytoprotection against rapamycin, a specific autophagy agonist. The present result suggested the inhibitory action of HO‑1 in the avoidance of a potentially enhanced linkage between autophagy and apoptosis, particularly in the setting of excessive ROS. Therefore, enhancing the intracellular activity of HO‑1 may assist the crosstalk between oxidative stress, autophagy and apoptosis, and represent a novel therapeutic strategy for renal ischemic disease.
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16
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Abstract
Protein quality control (proteostasis) depends on constant protein degradation and resynthesis, and is essential for proper homeostasis in systems from single cells to whole organisms. Cells possess several mechanisms and processes to maintain proteostasis. At one end of the spectrum, the heat shock proteins modulate protein folding and repair. At the other end, the proteasome and autophagy as well as other lysosome-dependent systems, function in the degradation of dysfunctional proteins. In this review, we examine how these systems interact to maintain proteostasis. Both the direct cellular data on heat shock control over autophagy and the time course of exercise-associated changes in humans support the model that heat shock response and autophagy are tightly linked. Studying the links between exercise stress and molecular control of proteostasis provides evidence that the heat shock response and autophagy coordinate and undergo sequential activation and downregulation, and that this is essential for proper proteostasis in eukaryotic systems.
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Key Words
- AKT, v-akt murine thymoma viral oncogene homolog 1
- AMPK, adenosine monophosphate-activated protein kinase
- ATG, autophagy-related
- BECN1, Beclin 1, autophagy related
- EIF4EBP1, eukaryotic translation initiation factor 4E binding protein 1
- ER, endoplasmic reticulum
- FOXO, forkhead box O
- HSF1, heat shock transcription factor 1
- HSP, heat shock protein
- HSP70
- HSPA8/HSC70, heat shock 70kDa protein 8
- IL, interleukin
- LC3, MAP1LC3, microtubule-associated protein 1 light chain 3
- MTMR14/hJumpy, myotubularin related protein 14
- MTOR, mechanistic target of rapamycin
- NR1D1/Rev-Erb-α, nuclear receptor subfamily 1, group D, member 1
- PBMC, peripheral blood mononuclear cell
- PPARGC1A/PGC-1α, peroxisome proliferator-activated receptor, gamma, coactivator 1 α
- RHEB, Ras homolog enriched in brain
- SOD, superoxide dismutase
- SQSTM1/p62, sequestosome 1
- TPR, translocated promoter region, nuclear basket protein
- TSC, tuberous sclerosis complex
- ULK1, unc-51 like autophagy activating kinase 1
- autophagy
- exercise
- heat shock response
- humans
- protein breakdown
- protein synthesis
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Affiliation(s)
- Karol Dokladny
- a Department of Internal Medicine; Health Sciences Center; Health, Exercise & Sports Science of University of New Mexico ; Albuquerque , NM USA
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17
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Tan Q, Wang H, Hu Y, Hu M, Li X, Aodengqimuge, Ma Y, Wei C, Song L. Src/STAT3-dependent heme oxygenase-1 induction mediates chemoresistance of breast cancer cells to doxorubicin by promoting autophagy. Cancer Sci 2015; 106:1023-32. [PMID: 26041409 PMCID: PMC4556392 DOI: 10.1111/cas.12712] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 12/15/2022] Open
Abstract
Chemotherapeutic resistance in breast cancer, whether acquired or intrinsic, remains a major clinical obstacle. Thus, increasing tumor cell sensitivity to chemotherapeutic agents will be helpful in improving the clinical management of breast cancer. In the present study, we found an induction of HO-1 expression in doxorubicin (DOX)-treated MDA-MB-231 human breast adenocarcinoma cells, which showed insensitivity to DOX treatment. Knockdown HO-1 expression dramatically upregulated the incidence of MDA-MB-231 cell death under DOX treatment, indicating that HO-1 functions as a critical contributor to drug resistance in MDA-MB-231 cells. We further observed that DOX exposure induced a cytoprotective autophagic flux in MDA-MB-231 cells, which was dependent on HO-1 induction. Moreover, upregulation of HO-1 expression required the activation of both signal transducer and activator of transcription (STAT)3 and its upstream regulator, protein kinase Src. Abrogating Src/STAT3 pathway activation attenuated HO-1 and autophagy induction, thus increasing the chemosensitivity of MDA-MB-231 cells. Therefore, we conclude that Src/STAT3-dependent HO-1 induction protects MDA-MB-231 breast cancer cells from DOX-induced death through promoting autophagy. In the following study, we further demonstrated the contribution of Src/STAT3/HO-1/autophagy pathway activation to DOX resistance in another breast cancer cell line, MDA-MB-468, which bears a similar phenotype to MDA-MB-231 cells. Therefore, activation of Src/STAT3/HO-1/autophagy signaling pathway might play a general role in protecting certain subtypes of breast cancer cells from DOX-induced cytotoxicity. Targeting this signaling event may provide a potential approach for overcoming DOX resistance in breast cancer therapeutics.
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Affiliation(s)
- Qixing Tan
- Department of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.,Department of Breast Surgery, Guangxi Medical University Tumor Hospital, Nanning, China
| | - Hongli Wang
- Department of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.,Laboratory of Cellular and Molecular Immunology, School of Medicine, Henan University, Kaifeng, China
| | - Yongliang Hu
- Department of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Meiru Hu
- Department of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Xiaoguang Li
- Department of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.,Department of New Drug Screening Center, China Pharmaceutical University, Nanjing, China
| | - Aodengqimuge
- Department of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.,Department of New Drug Screening Center, China Pharmaceutical University, Nanjing, China
| | - Yuanfang Ma
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Henan University, Kaifeng, China
| | - Changyuan Wei
- Department of Breast Surgery, Guangxi Medical University Tumor Hospital, Nanning, China
| | - Lun Song
- Department of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China
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18
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Lee W, Moon M, Kim HG, Lee TH, Oh MS. Heat stress-induced memory impairment is associated with neuroinflammation in mice. J Neuroinflammation 2015; 12:102. [PMID: 26001832 PMCID: PMC4465309 DOI: 10.1186/s12974-015-0324-6] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 05/14/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Heat stress induces many pathophysiological responses and has a profound impact on brain structure. It has been demonstrated that exposure to high temperature induces cognitive impairment in experimental animals and humans. Although the effects of heat stress have long been studied, the mechanisms by which heat stress affects brain structure and cognition not well understood. METHODS In our longitudinal study of mice exposed to heat over 7, 14, or 42 days, we found that heat stress time dependently impaired cognitive function as determined by Y-maze, passive avoidance, and novel object recognition tests. To elucidate the histological mechanism by which thermal stress inhibited cognitive abilities, we examined heat stress-induced inflammation in the hippocampus. RESULTS In mice subjected to heat exposure, we found: 1) an increased number of glial fibrillary acid protein (GFAP)- and macrophage-1 antigen (Mac-1)-positive cells, 2) up-regulated nuclear factor (NF)-κB, a master regulator of inflammation, and 3) marked increases in cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), and cytokine interleukin (IL)-1β and tumor necrosis factor (TNF)-α in the mouse hippocampus. We also observed that neuronal and synaptic densities were degenerated significantly in hippocampal regions after heat exposure, as determined by histological analysis of neuronal nuclei (NeuN), postsynaptic density protein 95 (PSD-95), and synaptophysin expression. Moreover, in heat-exposed mice, we found that the number of cells positive for doublecortin (DCX), a marker of neurogenesis, was significantly decreased compared with control mice. Finally, anti-inflammatory agent minocycline inhibited the heat stress-induced cognitive deficits and astogliosis in mice. CONCLUSIONS Together, these findings suggest that heat stress can lead to activation of glial cells and induction of inflammatory molecules in the hippocampus, which may act as causative factors for memory loss, neuronal death, and impaired adult neurogenesis.
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Affiliation(s)
- Wonil Lee
- Department of Life and Nanopharmaceutical Science, Graduate School and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 130-701, Republic of Korea.
| | - Minho Moon
- Molecular Neurobiology Laboratory, McLean Hospital/Harvard Medical School, Belmont, MA, 02478, USA. .,Department of Biochemistry, College of Medicine, Konyang University, Daejeon, 302-718, Republic of Korea.
| | - Hyo Geun Kim
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 130-701, Republic of Korea.
| | - Tae Hee Lee
- Department of Formulae Pharmacology, School of Oriental Medicine, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam, 461-701, Republic of Korea.
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Science, Graduate School and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 130-701, Republic of Korea. .,Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 130-701, Republic of Korea.
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19
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Wen YT, Liu TT, Lin YF, Chen CC, Kung WM, Huang CC, Lin TJ, Wang YH, Wei L. Heatstroke Effect on Brain Heme Oxygenase-1 in Rats. Int J Med Sci 2015; 12:737-41. [PMID: 26392811 PMCID: PMC4571551 DOI: 10.7150/ijms.12517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 08/09/2015] [Indexed: 02/05/2023] Open
Abstract
Exposure to high environmental temperature leading to increased core body temperature above 40°C and central nervous system abnormalities such as convulsions, delirium, or coma is defined as heat stroke. Studies in humans and animals indicate that the heat shock responses of the host contribute to multiple organ injury and death during heat stroke. Heme oxygenase-1 (HO-1)-a stress-responsive enzyme that catabolizes heme into iron, carbon monoxide, and biliverdin-has an important role in the neuroprotective mechanism against ischemic stroke. Here, we investigated the role of endogenous HO-1 in heat-induced brain damage in rats. RT-PCR results revealed that levels of HO-1 mRNA peaked at 0 h after heat exposure and immunoblot analysis revealed that the maximal protein expression occurred at 1 h post-heat exposure. Subsequently, we detected the HO-1 expression in the cortical brain cells and revealed the neuronal cell morphology. In conclusion, HO-1 is a potent protective molecule against heat-induced brain damage. Manipulation of HO-1 may provide a potential therapeutic approach for heat-related diseases.
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Affiliation(s)
- Ya-Ting Wen
- 1. Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei 11696, Taiwan
| | - Tsung-Ta Liu
- 2. Department of Biology and Anatomy, National Defense Medical Center, Taipei 114, Taiwan
| | - Yuh-Feng Lin
- 3. Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Chun-Chi Chen
- 4. Division of Nephrology, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan
| | - Woon-Man Kung
- 5. Department of Neurosurgery, Lo-Hsu Foundation, Lotung Poh-Ai Hospital, Luodong, Yilan 265, Taiwan
- 6. Department of Exercise and Health Promotion, College of Education, Chinese Culture University, Taipei 11114, Taiwan
| | - Chi-Chang Huang
- 7. Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan 33301, Taiwan
| | - Tien-Jen Lin
- 1. Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei 11696, Taiwan
- 8. Graduate Institute of Injury Prevention and Control, College of Public Health and Nutrition, Taipei Medical University, Taipei 11031, Taiwan
| | - Yuan-Hung Wang
- 3. Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- 9. Division of General Surgery, Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
- ✉ Corresponding authors: Dr. Li Wei: Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan. Tel.: +886-2-29307930 (ext. 6942). E-Mail: . Dr. Yuan-Hung Wang: Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. Tel.: +886-2-22490088 (ext. 8891). E-Mail:
| | - Li Wei
- 1. Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei 11696, Taiwan
- 10. The PhD Program of Translational Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- ✉ Corresponding authors: Dr. Li Wei: Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan. Tel.: +886-2-29307930 (ext. 6942). E-Mail: . Dr. Yuan-Hung Wang: Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. Tel.: +886-2-22490088 (ext. 8891). E-Mail:
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20
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Gu HF, Nie YX, Tong QZ, Tang YL, Zeng Y, Jing KQ, Zheng XL, Liao DF. Epigallocatechin-3-gallate attenuates impairment of learning and memory in chronic unpredictable mild stress-treated rats by restoring hippocampal autophagic flux. PLoS One 2014; 9:e112683. [PMID: 25393306 PMCID: PMC4231069 DOI: 10.1371/journal.pone.0112683] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 10/10/2014] [Indexed: 01/07/2023] Open
Abstract
Epigallocatechin gallate (EGCG) is a major polyphenol in green tea with beneficial effects on the impairment in learning and memory. Autophagy is a cellular process that protects neurons from stressful conditions. The present study was designed to investigate whether EGCG can rescue chronic unpredictable mild stress (CUMS)-induced cognitive impairment in rats and whether its protective effect involves improvement of autophagic flux. As expected, our results showed that CUMS significantly impaired memory performance and inhibited autophagic flux as indicated by elevated LC3-II and p62 protein levels. At the same time, we observed an increased neuronal loss and activated mammalian target of rapamycin (mTOR)/p70 ribosomal protein S6 kinase (p70S6k) signaling in the CA1 regions. Interestingly, chronic treatment with EGCG (25 mg/kg, i.p.) significantly improved those behavioral alterations, attenuated histopathological abnormalities in hippocampal CA1 regions, reduced amyloid beta1-42 (Aβ1-42) levels, and restored autophagic flux. However, blocking autophagic flux with chloroquine, an inhibitor of autophagic flux, reversed these effects of EGCG. Taken together, these findings suggest that the impaired autophagy in CA1 regions of CUMS rats may contribute to learning and memory impairment. Therefore, we conclude that EGCG attenuation of CUMS-induced learning and memory impairment may be through rescuing autophagic flux.
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MESH Headings
- Amyloid beta-Peptides/genetics
- Amyloid beta-Peptides/metabolism
- Animals
- Autoantigens/genetics
- Autoantigens/metabolism
- Autophagy/drug effects
- CA1 Region, Hippocampal/drug effects
- CA1 Region, Hippocampal/metabolism
- CA1 Region, Hippocampal/pathology
- Catechin/analogs & derivatives
- Catechin/antagonists & inhibitors
- Catechin/pharmacology
- Chloroquine/pharmacology
- Chronic Disease
- Cognitive Dysfunction/drug therapy
- Cognitive Dysfunction/etiology
- Cognitive Dysfunction/genetics
- Cognitive Dysfunction/physiopathology
- Gene Expression Regulation
- Male
- Maze Learning/drug effects
- Memory/drug effects
- Microtubule-Associated Proteins/genetics
- Microtubule-Associated Proteins/metabolism
- Neurons/drug effects
- Neurons/metabolism
- Neurons/pathology
- Nootropic Agents/antagonists & inhibitors
- Nootropic Agents/pharmacology
- Peptide Fragments/genetics
- Peptide Fragments/metabolism
- Rats
- Rats, Wistar
- Ribosomal Protein S6 Kinases, 70-kDa/genetics
- Ribosomal Protein S6 Kinases, 70-kDa/metabolism
- Signal Transduction
- Stress, Psychological/complications
- Stress, Psychological/drug therapy
- Stress, Psychological/genetics
- Stress, Psychological/physiopathology
- TOR Serine-Threonine Kinases/genetics
- TOR Serine-Threonine Kinases/metabolism
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Affiliation(s)
- Hong-Feng Gu
- Department of Physiology & Institute of Neuroscience, University of South China, Hengyang, People's Republic of China
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan, Hunan University of Chinese Medicine, Changsha, People's Republic of China
| | - Ya-Xiong Nie
- Department of Neurology of the First Affiliated Hospital, University of South China, Hengyang, People's Republic of China
| | - Qiao-Zhen Tong
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan, Hunan University of Chinese Medicine, Changsha, People's Republic of China
| | - Ya-Ling Tang
- Department of Physiology & Institute of Neuroscience, University of South China, Hengyang, People's Republic of China
| | - Yang Zeng
- Department of Neurology of the First Affiliated Hospital, University of South China, Hengyang, People's Republic of China
| | - Kai-Quan Jing
- Department of Neurology of the First Affiliated Hospital, University of South China, Hengyang, People's Republic of China
| | - Xi-Long Zheng
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan, Hunan University of Chinese Medicine, Changsha, People's Republic of China
- Smooth Muscle Research Group, Department of Biochemistry & Molecular Biology, Libin Cardiovascular Institute of Alberta, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Duan-Fang Liao
- Smooth Muscle Research Group, Department of Biochemistry & Molecular Biology, Libin Cardiovascular Institute of Alberta, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
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21
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Xu J, Meng K, Zhang R, Yang H, Liao C, Zhu W, Jiao J. The use of functional chemical-protein associations to identify multi-pathway renoprotectants. PLoS One 2014; 9:e97906. [PMID: 24830678 PMCID: PMC4022655 DOI: 10.1371/journal.pone.0097906] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 04/25/2014] [Indexed: 02/07/2023] Open
Abstract
Typically, most nephropathies can be categorized as complex human diseases in which the cumulative effect of multiple minor genes, combined with environmental and lifestyle factors, determines the disease phenotype. Thus, multi-target drugs would be more likely to facilitate comprehensive renoprotection than single-target agents. In this study, functional chemical-protein association analysis was performed to retrieve multi-target drugs of high pathway wideness from the STITCH 3.1 database. Pathway wideness of a drug evaluated the efficiency of regulation of Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways in quantity. We identified nine experimentally validated renoprotectants that exerted remarkable impact on KEGG pathways by targeting a limited number of proteins. We selected curcumin as an illustrative compound to display the advantage of multi-pathway drugs on renoprotection. We compared curcumin with hemin, an agonist of heme oxygenase-1 (HO-1), which significantly affects only one KEGG pathway, porphyrin and chlorophyll metabolism (adjusted p = 1.5×10−5). At the same concentration (10 µM), both curcumin and hemin equivalently mitigated oxidative stress in H2O2-treated glomerular mesangial cells. The benefit of using hemin was derived from its agonistic effect on HO-1, providing relief from oxidative stress. Selective inhibition of HO-1 completely blocked the action of hemin but not that of curcumin, suggesting simultaneous multi-pathway intervention by curcumin. Curcumin also increased cellular autophagy levels, enhancing its protective effect; however, hemin had no effects. Based on the fact that the dysregulation of multiple pathways is implicated in the etiology of complex diseases, we proposed a feasible method for identifying multi-pathway drugs from compounds with validated targets. Our efforts will help identify multi-pathway agents capable of providing comprehensive protection against renal injuries.
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Affiliation(s)
- Jia Xu
- Department of Nephrology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
- Department of Nephrology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Kexin Meng
- Department of Nephrology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Rui Zhang
- Department of Nephrology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - He Yang
- Department of Nephrology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chang Liao
- Department of Nephrology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wenliang Zhu
- Institute of Clinical Pharmacology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jundong Jiao
- Department of Nephrology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
- Institute of Nephrology, Harbin Medical University, Harbin, China
- * E-mail:
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