1
|
Li H, Pan W, Li C, Cai M, Shi W, Ren Z, Lu H, Zhou Q, Shen H. Heat stress induces calcium dyshomeostasis to subsequent cognitive impairment through ERS-mediated apoptosis via SERCA/PERK/eIF2α pathway. Cell Death Discov 2024; 10:280. [PMID: 38862478 PMCID: PMC11167007 DOI: 10.1038/s41420-024-02047-7] [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: 10/23/2023] [Revised: 05/19/2024] [Accepted: 05/28/2024] [Indexed: 06/13/2024] Open
Abstract
Heat exposure is an environmental stressor that has been associated with cognitive impairment. However, the neural mechanisms that underlie this phenomenon have yet to be extensively investigated. The Morris water maze test was utilized to assess cognitive performance. RNA sequencing was employed to discover the primary regulators and pathological pathways involved in cognitive impairment caused by heat. Before heat exposure in vivo and in vitro, activation of the sarco/endoplasmic reticulum (SR/ER) calcium (Ca2+)-ATPase (SERCA) was achieved by CDN1163. Hematoxylin-Eosin, Nissl staining, calcium imaging, transmission electron microscopy, western blot, and immunofluorescence were utilized to visualize histological changes, intracellular calcium levels, endoplasmic reticulum stress (ERS) markers, apoptosis, and synaptic proteins alterations. Heat stress (HS) significantly induced cognitive decline and neuronal damage in mice. By the transcriptome sequencing between control (n = 5) and heat stress (n = 5) mice in hippocampal tissues, we identified a reduction in the expression of the atp2a gene encoding SERCA, accompanied by a corresponding decrease in its protein level. Consequently, this dysregulation resulted in an excessive accumulation of intracellular calcium ions. Furthermore, HS exposure also activated ERS and apoptosis, as evidenced by the upregulation of p-PERK, p-eIF2α, CHOP, and caspase-3. Consistently, a reduction in postsynaptic density protein 95 (PSD95) and synaptophysin (SYN) expressions indicated modifications in synaptic function. Notably, the impacts on neurons caused by HS were found to be mitigated by CDN1163 treatment both in vivo and in vitro. Additionally, SERCA-mediated ERS-induced apoptosis was attenuated by GSK2606414 treatment via inhibiting PERK-eIF2α-CHOP axis that not only curtailed the level of caspase-3 but also elevated the levels of PSD95 and SYN. These findings highlight the significant impact of heat stress on cognitive impairment, and further elucidate the underlying mechanism involving SERCA/PERK/eIF2α pathway.
Collapse
Affiliation(s)
- Hongxia Li
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China
| | - Wenlan Pan
- Department of Clinical Nutrition, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 201999, China
| | - Chenqi Li
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China
- Department of Nutrition, The Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
| | - Mengyu Cai
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China
| | - Wenjing Shi
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China
| | - Zifu Ren
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China
| | - Hongtao Lu
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China.
| | - Qicheng Zhou
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China.
| | - Hui Shen
- Department of Nutrition and Food Hygiene, Faculty of Naval Medicine, Naval Medical University, Shanghai, 200433, China.
| |
Collapse
|
2
|
Shablii T. Pathomorphological characteristics of heat stress in the experiment. J Obstet Gynaecol Res 2024. [PMID: 38757465 DOI: 10.1111/jog.15964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/25/2024] [Indexed: 05/18/2024]
Abstract
AIM The purpose of this research was to explore some morphological, physiological, and biochemical changes in female and fetal Wistar rats under heat stress. METHODS The experiment involved 30 animals, including two experimental groups (pregnant and nonpregnant females) kept under heat stress at 32°C and one control group consisting of healthy individuals kept in standard vivarium conditions. After dissection, fixation, dehydration, and primary processing, tissue samples were embedded in a mixture of paraffin and lanolin to obtain material for sections. Sections were made using a freezing and angular microtome and stained with hematoxylin and fuchsine solutions. Changes in morphology were assessed by microscopy using a Leitz DIAPLAN system. RESULTS As a result of heat stress, an increase in linear cell size, capillary network area, and adrenal mass was observed; adipocytes lost lipid vacuoles; prismatic thyroid cells were replaced by flat cells; hypothyroidism; an increase in the number of osteocyte lacunae; and increased osteoclast activity in bone tissue; interstitial and intracellular oedema and caryopycnosis of ventricular cardiomyocytes; reduction in the diameter of skeletal muscle fibers and replacement of tissue with collagen fibers; water loss in the structure of myofibrils; destructive local changes, hyperchromatosis and caryopycnosis of the hippocampus. CONCLUSIONS The data obtained allows predicting the possible consequences of prolonged overheating of tissues of other vertebrates and the human body.
Collapse
Affiliation(s)
- Tetiana Shablii
- Department of Obstetrics and Gynecology, Odessa National Medical University, Odesa, Ukraine
| |
Collapse
|
3
|
White AR. The firestorm within: A narrative review of extreme heat and wildfire smoke effects on brain health. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 922:171239. [PMID: 38417511 DOI: 10.1016/j.scitotenv.2024.171239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/01/2024]
Abstract
Climate change is generating increased heatwaves and wildfires across much of the world. With these escalating environmental changes comes greater impacts on human health leading to increased numbers of people suffering from heat- and wildfire smoke-associated respiratory and cardiovascular impairment. One area of health impact of climate change that has received far less attention is the effects of extreme heat and wildfire smoke exposure on human brain health. As elevated temperatures, and wildfire-associated smoke, are increasingly experienced simultaneously over summer periods, understanding this combined impact is critical to management of human health especially in the elderly, and people with dementia, and other neurological disorders. Both extreme heat and wildfire smoke air pollution (especially particulate matter, PM) induce neuroinflammatory and cerebrovascular effects, oxidative stress, and cognitive impairment, however the combined effect of these impacts are not well understood. In this narrative review, a comprehensive examination of extreme heat and wildfire smoke impact on human brain health is presented, with a focus on how these factors contribute to cognitive impairment, and dementia, one of the leading health issues today. Also discussed is the potential impact of combined heat and wildfire smoke on brain health, and where future efforts should be applied to help advance knowledge in this rapidly growing and critical field of health research.
Collapse
Affiliation(s)
- Anthony R White
- Mental Health and Neuroscience Program, QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland; School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia; School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, QLD, Australia.
| |
Collapse
|
4
|
Wang S, Hou K, Gui S, Ma Y, Wang S, Zhao S, Zhu X. Insulin-like growth factor 1 in heat stress-induced neuroinflammation: novel perspective about the neuroprotective role of chromium. STRESS BIOLOGY 2023; 3:23. [PMID: 37676529 PMCID: PMC10441889 DOI: 10.1007/s44154-023-00105-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/06/2023] [Indexed: 09/08/2023]
Abstract
Heat stress (HS) can cause a series of stress responses, resulting in numerous negative effects on the body, such as the diminished food intake, carcass quality and reproductive capacity. In addition to the negative effects on the peripheral system, HS leads to central nervous system (CNS) disorders given its toll on neuroinflammation. This neuroinflammatory process is mainly mediated by microglia and astrocytes, which are involved in the activation of glial cells and the secretion of cytokines. While the regulation of inflammatory signaling has a close relationship with the expression of heat shock protein 70 (Hsp70), HS-induced neuroinflammation is closely related to the activation of the TLR4/NF-κB pathway. Moreover, oxidative stress and endoplasmic reticulum (ER) stress are key players in the development of neuroinflammation. Chromium (Cr) has been widely shown to have neuroprotective effects in both humans and animals, despite the lack of mechanistic evidence. Evidence has shown that Cr supplementation can increase the levels of insulin-like growth factor 1 (IGF-1), a major neurotrophic factor with anti-inflammatory and antioxidant effects. This review highlights recent advances in the attenuating effects and potential mechanisms of Cr-mediated IGF-1 actions on HS-induced neuroinflammation, providing presently existing evidence supporting the neuroprotective role of Cr.
Collapse
Affiliation(s)
- Songlin Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China
| | - Kanghui Hou
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China
| | - Siqi Gui
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China
| | - Yue Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China
| | - Shuai Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China
| | - Shanting Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China
| | - Xiaoyan Zhu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, China.
| |
Collapse
|
5
|
Chen P, Guo Z, Zhou B. Insight into the role of adult hippocampal neurogenesis in aging and Alzheimer's disease. Ageing Res Rev 2023; 84:101828. [PMID: 36549424 DOI: 10.1016/j.arr.2022.101828] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 12/09/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia and seriously affects the quality of life of the elderly. Neurodegeneration is closely related to hippocampal dysfunction in AD patients. The hippocampus is key to creating new memories and is also one of the first areas of the brain to deteriorate with age. Mammalian neurogenesis occurs mainly in the hippocampus. Recent studies have confirmed that neurogenesis in the hippocampus is sustainable but decreases with age, which seriously affects the learning and memory function of AD patients. At present, our understanding of neurogenesis is still relatively shallow, especially pertaining to the influence and role of neurogenesis during aging and cognitive deficits in AD patients. Interestingly, many recent studies have described the characteristics of neurogenesis in animal models. This article reviews the progress of neurogenesis research in the context of aging and AD to provide new insights into neurogenesis.
Collapse
Affiliation(s)
- Peng Chen
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.
| | - ZhiLei Guo
- Department of Pharmacy, Wuhan Fourth Hospital, Wuhan, Hubei, China.
| | - Benhong Zhou
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.
| |
Collapse
|
6
|
Muresanu DF, Sharma A, Tian ZR, Lafuente JV, Nozari A, Feng L, Buzoianu AD, Wiklund L, Sharma HS. Nanowired Delivery of Cerebrolysin with Mesenchymal Stem Cells Attenuates Heat Stress-Induced Exacerbation of Neuropathology Following Brain Blast Injury. ADVANCES IN NEUROBIOLOGY 2023; 32:231-270. [PMID: 37480463 DOI: 10.1007/978-3-031-32997-5_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Blast brain injury (bBI) following explosive detonations in warfare is one of the prominent causes of multidimensional insults to the central nervous and other vital organs injury. Several military personnel suffered from bBI during the Middle East conflict at hot environment. The bBI largely occurs due to pressure waves, generation of heat together with release of shrapnel and gun powders explosion with penetrating and/or impact head trauma causing multiple brain damage. As a result, bBI-induced secondary injury causes breakdown of the blood-brain barrier (BBB) and edema formation that further results in neuronal, glial and axonal injuries. Previously, we reported endocrine imbalance and influence of diabetes on bBI-induced brain pathology that was significantly attenuated by nanowired delivery of cerebrolysin in model experiments. Cerebrolysin is a balanced composition of several neurotrophic factors, and active peptide fragment is capable of neuroprotection in several neurological insults. Exposure to heat stress alone causes BBB damage, edema formation and brain pathology. Thus, it is quite likely that hot environment further exacerbates the consequences of bBI. Thus, novel therapeutic strategies using nanodelivery of stem cell and cerebrolysin may further enhance superior neuroprotection in bBI at hot environment. Our observations are the first to show that combined nanowired delivery of mesenchymal stem cells (MSCs) and cerebrolysin significantly attenuated exacerbation of bBI in hot environment and induced superior neuroprotection, not reported earlier. The possible mechanisms of neuroprotection with MSCs and cerebrolysin in bBI are discussed in the light of current literature.
Collapse
Affiliation(s)
- Dafin F Muresanu
- Department of Clinical Neurosciences, University of Medicine & Pharmacy, Cluj-Napoca, Romania
- "RoNeuro" Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Aruna Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Z Ryan Tian
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, USA
| | - José Vicente Lafuente
- LaNCE, Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain
| | - Ala Nozari
- Anesthesiology & Intensive Care, Chobanian & Avedisian School of Medicine, Boston University, Boston, MA, USA
| | - Lianyuan Feng
- Department of Neurology, Bethune International Peace Hospital, Zhongshan, Hebei Province, China
| | - Anca D Buzoianu
- Department of Clinical Pharmacology and Toxicology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Lars Wiklund
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Hari Shanker Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
| |
Collapse
|
7
|
Emam O, Wasfey EF, Hamdy NM. Notch-associated lncRNAs profiling circuiting epigenetic modification in colorectal cancer. Cancer Cell Int 2022; 22:316. [PMID: 36229883 PMCID: PMC9558410 DOI: 10.1186/s12935-022-02736-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/28/2022] [Indexed: 11/15/2022] Open
Abstract
Background Colorectal cancer (CRC) is one of the most prevalent digestive cancers, ranking the 2nd cause of cancer-related fatality worldwide. The worldwide burden of CRC is predicted to rise by 60% by 2030. Environmental factors drive, first, inflammation and hence, cancer incidence increase. Main The Notch-signaling system is an evolutionarily conserved cascade, has role in the biological normal developmental processes as well as malignancies. Long non-coding RNAs (LncRNAs) have become major contributors in the advancement of cancer by serving as signal pathways regulators. They can control gene expression through post-translational changes, interactions with micro-RNAs or down-stream effector proteins. Recent emerging evidence has emphasized the role of lncRNAs in controlling Notch-signaling activity, regulating development of several cancers including CRC. Conclusion Notch-associated lncRNAs might be useful prognostic biomarkers or promising potential therapeutic targets for CRC treatment. Therefore, here-in we will focus on the role of “Notch-associated lncRNAs in CRC” highlighting “the impact of Notch-associated lncRNAs as player for cancer induction and/or progression.” Graphical Abstract ![]()
Collapse
Affiliation(s)
| | - Eman F Wasfey
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt
| | - Nadia M Hamdy
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt.
| |
Collapse
|