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Xiao Y, Liu R, Zhang X, Li Y, Peng F, Tang W. Analysis of cantharidin-induced kidney injury and the protective mechanism of resveratrol in mice determined by liquid chromatography/mass spectrometry-based metabonomics. J Appl Toxicol 2024; 44:990-1004. [PMID: 38448202 DOI: 10.1002/jat.4596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/08/2024] [Accepted: 02/22/2024] [Indexed: 03/08/2024]
Abstract
Cantharidin (CTD) is the main active component in the traditional Chinese medicine Mylabris and an effective anti-tumor agent. However, it is relatively toxic and exhibits nephrotoxicity, which limits its clinical use. However, its toxic mechanism is not clear. The toxic effects of CTD exposure on the kidney and the protective effect of resveratrol (RES) were studied in a mouse model, by determination of serum biochemical and renal antioxidant indicators, histopathological and ultrastructural observation, and metabonomics. After CTD exposure, serum uric acid, creatinine, and tissue oxidative stress indicators increased, and the renal glomerular and tubular epithelial cells showed clear pathological damage. Ultrastructure observation revealed marked mitochondrial swelling, endoplasmic reticulum dilation, and the presence of autophagy lysosomes in glomerular epithelial cells. RES ameliorated the renal injury induced by CTD. Metabonomics analysis indicated that CTD can induce apoptosis and oxidative damage in kidney cells, mainly by disrupting sphingolipid and glutathione metabolism, increasing sphingosine and sphingomyelin levels, and decreasing glutathione levels. RES counteracts these effects by regulating renal cell proliferation, the inflammatory response, oxidative stress, and apoptosis, by improving the levels of phosphatidylcholine (PC), LysoPC, and lysophosphatidyl glycerol in the glycerophospholipid metabolism pathway, thereby reducing CTD-induced nephrotoxicity. The mechanisms of CTD-induced renal injury and the protective effect of RES were revealed by metabonomics, providing a basis for evaluating clinical treatment regimens to reduce CTD-induced nephrotoxicity.
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Affiliation(s)
- Yuanyuan Xiao
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Ruxia Liu
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xiaoyue Zhang
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yaofeng Li
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Fang Peng
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Wenchao Tang
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
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2
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Nagayama S, Hasegawa-Ishii S, Kikuta S. Anesthetized animal experiments for neuroscience research. Front Neural Circuits 2024; 18:1426689. [PMID: 38884008 PMCID: PMC11177690 DOI: 10.3389/fncir.2024.1426689] [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] [Received: 05/01/2024] [Accepted: 05/20/2024] [Indexed: 06/18/2024] Open
Abstract
Brain research has progressed with anesthetized animal experiments for a long time. Recent progress in research techniques allows us to measure neuronal activity in awake animals combined with behavioral tasks. The trends became more prominent in the last decade. This new research style triggers the paradigm shift in the research of brain science, and new insights into brain function have been revealed. It is reasonable to consider that awake animal experiments are more ideal for understanding naturalistic brain function than anesthetized ones. However, the anesthetized animal experiment still has advantages in some experiments. To take advantage of the anesthetized animal experiments, it is important to understand the mechanism of anesthesia and carefully handle the obtained data. In this minireview, we will shortly summarize the molecular mechanism of anesthesia in animal experiments, a recent understanding of the neuronal activities in a sensory system in the anesthetized animal brain, and consider the advantages and disadvantages of the anesthetized and awake animal experiments. This discussion will help us to use both research conditions in the proper manner.
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Affiliation(s)
- Shin Nagayama
- Department of Neurobiology and Anatomy, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Sanae Hasegawa-Ishii
- Pathology Research Team, Faculty of Health Sciences, Kyorin University, Mitaka, Japan
| | - Shu Kikuta
- Department of Otorhinolaryngology, Medical School of Nihon University, Tokyo, Japan
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Lian S, Liu S, Wu A, Yin L, Li L, Zeng L, Zhao M, Zhang L. Branched-Chain Amino Acid Degradation Pathway was Inactivated in Colorectal Cancer: Results from a Proteomics Study. J Cancer 2024; 15:3724-3737. [PMID: 38911385 PMCID: PMC11190764 DOI: 10.7150/jca.95454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 04/25/2024] [Indexed: 06/25/2024] Open
Abstract
Background: Colorectal cancer (CRC) ranks third in terms of cancer incidence and fourth in terms of cancer-related deaths worldwide. Identifying potential biomarkers of CRC is crucial for treatment and drug development. Methods: In this study, we established a C57B/6N mouse model of colon carcinogenesis using azoxymethane-dextran sodium sulfate (AOM-DSS) treatment for 14 weeks to identify proteins associated with colon cancer. An isobaric tag for relative and absolute quantitation (iTRAQ)-based proteomic analysis was conducted on the cell membrane components enriched in the colonic mucosa. Additionally, tumor tissues and adjacent normal colon tissues were collected from patients with colon cancer for comparative protein and metabolite analyses. Results: In total, 74 differentially expressed proteins were identified in the tumor tissue samples from AOM/DSS-treated mice compared to both the adjacent tissue samples from AOM/DSS-treated mice and tissue samples from saline-treated control mice. Bioinformatics analysis revealed eight downregulated proteins enriched in the branched-chain amino acids pathway (valine, leucine, and isoleucine degradation). Moreover, these proteins are already known to be associated with the survival rate of patients with cancer. Targeted metabolomics showed increased levels of valine, leucine, and isoleucine in tumor tissues compared to those in adjacent normal tissues in patients with colon cancer. Furthermore, a real-time PCR experiment demonstrated that Aldehyde dehydrogenase, mitochondrial (short protein name ALDH2, gene name Aldh2) and Hydroxyacyl-coenzyme A dehydrogenase, mitochondrial (short protein name HCDH, gene name Hadh) (two genes) in the pathway of branched-chain amino acids) were downregulated in patients with colon cancer (colon tumor tissues vs. their adjacent colon tissues). ALDH2 expression was further validated by western blotting in AOM/DSS-treated mouse model and in clinical samples. Conclusion: This study highlighted the inactivation of the branched-chain amino acid degradation pathway in colon cancer and identified ALDH2 and HCDH as potential biomarkers for diagnosing colon cancer and developing new therapeutic strategies.
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Affiliation(s)
- Shixian Lian
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Siyuan Liu
- Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - Ao Wu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Lin Yin
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Lei Li
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Liyan Zeng
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Mingkun Zhao
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Lijun Zhang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
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4
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Fussing F, Christensson J, Wörtwein G. Expression of erythropoietin receptor protein in the mouse hippocampus in response to normobaric hypoxia. Heliyon 2024; 10:e25051. [PMID: 38322970 PMCID: PMC10844123 DOI: 10.1016/j.heliyon.2024.e25051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 12/17/2023] [Accepted: 01/18/2024] [Indexed: 02/08/2024] Open
Abstract
Background Over the past decades, accumulating research on erythropoietin (EPO) and its receptor (EPOR) has revealed various neuroprotective actions and upregulation in hypoxic conditions. To our knowledge, EPOR protein levels in the hippocampus and isocortex have never been measured. Therefore, the aim of this study was to measure EPOR protein in the hippocampus (HPC) and prefrontal cortex (PFC). Further objectives were to examine the effects of exposure to normobaric hypoxia of various degrees and durations on EPOR protein and to explore how long-lasting these effects were. Method Adult C57BL/6 mice were randomized into a control group (N = 12) or various hypoxia groups (N = 5-11). Mice were exposed to three different O2 concentrations (10 %, 12 %, or 18 %) for 8 h a day for 5 days and sacrificed immediately after the last exposure. The effect of exposure to 12 % O2 for 1 day and 4 weeks (8 h per day) at this survival time was also examined. Additionally, groups of mice were exposed to 12 % O2 for 1 or 5 days (8 h per day) and euthanized at various times (up to 3 weeks) thereafter to examine the duration of EPOR protein regulation in the HPC and the PFC. EPOR protein was detected with a sandwich-ELISA method. Results EPOR protein was present in the HPC and PFC, at 206.64 ± 43.98 pg/mg and 184.25 ± 48.21 pg/mg, respectively. The highest increase in EPOR protein was observed in the HPC after 5 days of 8 h exposure to 12 % O2 and was most pronounced 24 h after last exposure. The effect of hypoxia normalized within one week after the last exposure. Conclusion This study successfully measured hippocampal EPOR protein and showed a significant association between normobaric hypoxia and acute EPOR elevation. It is our hope that this study can provide guidance to future research on the neuroprotective effects of EPO.
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Affiliation(s)
- F. Fussing
- Laboratory of Neuropsychiatry, Psychiatric Centre Copenhagen, Mental Health Services, Capital Region of Copenhagen and University Hospital of Copenhagen, Denmark
| | - J. Christensson
- Laboratory of Neuropsychiatry, Psychiatric Centre Copenhagen, Mental Health Services, Capital Region of Copenhagen and University Hospital of Copenhagen, Denmark
| | - G. Wörtwein
- Laboratory of Neuropsychiatry, Psychiatric Centre Copenhagen, Mental Health Services, Capital Region of Copenhagen and University Hospital of Copenhagen, Denmark
- Section of Environmental Health, Department of Public Health, University of Copenhagen, Øster Farimagsgade 5, DK-1014, Copenhagen, Denmark
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Hu H, Yan Q, Tang X, Lai S, Qin Z, Xu T, Zhang H, Hu H. A novel model of urosepsis in mice developed by ureteral ligation and injection of Escherichia coli into the renal pelvis. Heliyon 2024; 10:e25522. [PMID: 38327418 PMCID: PMC10847998 DOI: 10.1016/j.heliyon.2024.e25522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/25/2024] [Accepted: 01/29/2024] [Indexed: 02/09/2024] Open
Abstract
Despite extensive investigations, urosepsis remains a life-threatening and high-mortality illness. The absence of widely acknowledged animal models for urosepsis prompted this investigation with the objective of formulating a replicable murine model. Eighty-four adult male C57BL/6J mice were arbitrarily distributed into three cohorts based on the concentration of the Escherichia coli (E. coli) solution administered into the renal pelvis: Sham, Low-grade sepsis (1.0 × 108 cfu/mL), and High-grade sepsis (1.0 × 109 cfu/mL). By fabricating a glass needle with a 100 μm outer diameter, bacterial leakage during renal pelvic injection was minimized. After the ureteral ligation, the mice were injected with this needle into the right renal pelvis (normal saline or E. coli solution, 1 ml/kg). Ten days post after E. coli injection, the mortality rates for the Low-grade sepsis and High-grade sepsis groups stood at 30 % and 100 %, respectively. Post-successful modeling, mice in the urosepsis cohort exhibited a noteworthy reduction in activity, body temperature, and white blood cell count within a 2-h timeframe. At the 24-h mark post-modeling, mice afflicted with urosepsis displayed compromised coagulation functionality. Concurrently, multiple organ dysfunction was confirmed as evidenced by markedly elevated levels of inflammatory factors (IL-6 and TNF-α) in four distinct organs (heart, lung, liver, and kidney). This study confirmed the feasibility of establishing a standardized mouse model of urosepsis by ureteral ligation and E. coli injection into the renal pelvis. A primary drawback of this model resides in the mice's diminished blood volume, rendering continuous blood extraction at multiple intervals challenging.
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Affiliation(s)
- Haopu Hu
- Department of Urology, Peking University People's Hospital, Beijing, China
| | - Qiuxia Yan
- Department of Urology, Huizhou First People's Hospital, Huizhou, Guangdong, China
| | - Xinwei Tang
- Department of Urology, Peking University People's Hospital, Beijing, China
| | - Shicong Lai
- Department of Urology, Peking University People's Hospital, Beijing, China
| | - Ziyu Qin
- State Key Laboratory of Vascular Homeostasis and Remodeling, The lnstitute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Tao Xu
- Department of Urology, Peking University People's Hospital, Beijing, China
| | - Hong Zhang
- State Key Laboratory of Vascular Homeostasis and Remodeling, The lnstitute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Hao Hu
- Department of Urology, Peking University People's Hospital, Beijing, China
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Wang X, Zhou R, Sun X, Li J, Wang J, Yue W, Wang L, Liu H, Shi Y, Zhang D. Preferential Regulation of Γ-Secretase-Mediated Cleavage of APP by Ganglioside GM1 Reveals a Potential Therapeutic Target for Alzheimer's Disease. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303411. [PMID: 37759382 PMCID: PMC10646247 DOI: 10.1002/advs.202303411] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/20/2023] [Indexed: 09/29/2023]
Abstract
A hallmark of Alzheimer's disease (AD) is the senile plaque, which contains β-amyloid peptides (Aβ). Ganglioside GM1 is the most common brain ganglioside. However, the mechanism of GM1 in modulating Aβ processing is rarely known. Aβ levels are detected by using Immunohistochemistry (IHC) and enzyme-linked immune-sorbent assay (ELISA). Cryo-electron microscopy (Cryo-EM) is used to determine the structure of γ-secretase supplemented with GM1. The levels of the cleavage of amyloid precursor protein (APP)/Cadherin/Notch1 are detected using Western blot analysis. Y maze, object translocation, and Barnes maze are performed to evaluate cognitive functions. GM1 leads to conformational change of γ-secretase structure and specifically accelerates γ-secretase cleavage of APP without affecting other substrates including Notch1, potentially through its interaction with the N-terminal fragment of presenilin 1 (PS1). Reduction of GM1 levels decreases amyloid plaque deposition and improves cognitive dysfunction. This study reveals the mechanism of GM1 in Aβ generation and provides the evidence that decreasing GM1 levels represents a potential strategy in AD treatment. These results provide insights into the detailed mechanism of the effect of GM1 on PS1, representing a step toward the characterization of its novel role in the modulation of γ-secretase activity and the pathogenesis of AD.
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Affiliation(s)
- Xiaotong Wang
- Peking University Sixth HospitalPeking University Institute of Mental HealthNHC Key Laboratory of Mental Health (Peking University)National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital)Beijing100191China
- Changping LaboratoryBeijing102206China
| | - Rui Zhou
- Beijing Frontier Research Center for Biological StructureTsinghua‐Peking Joint Center for Life SciencesSchool of Life SciencesTsinghua UniversityBeijing100084China
| | - Xiaqin Sun
- Peking University Sixth HospitalPeking University Institute of Mental HealthNHC Key Laboratory of Mental Health (Peking University)National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital)Beijing100191China
| | - Jun Li
- Peking University Sixth HospitalPeking University Institute of Mental HealthNHC Key Laboratory of Mental Health (Peking University)National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital)Beijing100191China
| | - Jinxin Wang
- State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain ResearchBeijing Normal UniversityBeijing100875China
| | - Weihua Yue
- Peking University Sixth HospitalPeking University Institute of Mental HealthNHC Key Laboratory of Mental Health (Peking University)National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital)Beijing100191China
- PKU‐IDG/McGovern Institute for Brain ResearchPeking UniversityBeijing100871China
| | - Lifang Wang
- Peking University Sixth HospitalPeking University Institute of Mental HealthNHC Key Laboratory of Mental Health (Peking University)National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital)Beijing100191China
| | - Hesheng Liu
- Changping LaboratoryBeijing102206China
- Biomedical Pioneering Innovation CenterPeking UniversityBeijing100871China
| | - Yigong Shi
- Beijing Frontier Research Center for Biological StructureTsinghua‐Peking Joint Center for Life SciencesSchool of Life SciencesTsinghua UniversityBeijing100084China
- Westlake Laboratory of Life Science and BiomedicineHangzhouZhejiang310024China
- Key Laboratory of Structural Biology of Zhejiang ProvinceSchool of Life SciencesWestlake UniversityHangzhouZhejiang310024China
- Institute of BiologyWestlake Institute for Advanced Study18 Shilongshan Road, Xihu DistrictHangzhouZhejiang310024China
| | - Dai Zhang
- Peking University Sixth HospitalPeking University Institute of Mental HealthNHC Key Laboratory of Mental Health (Peking University)National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital)Beijing100191China
- Changping LaboratoryBeijing102206China
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7
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Domínguez-Oliva A, Olmos-Hernández A, Hernández-Ávalos I, Lecona-Butrón H, Mora-Medina P, Mota-Rojas D. Rat Grimace Scale as a Method to Evaluate Animal Welfare, Nociception, and Quality of the Euthanasia Method of Wistar Rats. Animals (Basel) 2023; 13:3161. [PMID: 37893885 PMCID: PMC10603718 DOI: 10.3390/ani13203161] [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: 09/02/2023] [Revised: 10/05/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023] Open
Abstract
Refinement of experimental procedures in animal research has the objective of preventing and minimizing pain/distress in animals, including the euthanasia period. This study aimed to evaluate pain associated with six methods of euthanasia in Wistar rats (injectable, inhalational, and physical), by applying the Rat Grimace Scale (RGS), comparing the scores, and determining the method with the highest score that might indicate pain for laboratory rodents. Sixty adult male and female Wistar rats were used and assigned to six treatments: pentobarbital, CO2, decapitation, isoflurane, ketamine + xylazine, and ketamine + CO2. Video recording to assess the RGS scores was performed in four events: basal: 24 h before the procedure; Ti1: three minutes before the procedure; Ti2: during the application of the euthanasia method; and Ti3: immediately after the application until LORR. The main findings of this study showed that, during Ti2, decapitation and ketamine + xylazine had the highest scores (0.6 ± 0.26 and 0.6 ± 0.16, respectively) (p < 0.0001), while at Ti3, CO2 (0.9 ± 0.18) and isoflurane (1.2 ± 0.20) recorded the highest scores (p < 0.0001). According to the present results, decapitation and ketamine + xylazine elicited short-term acute pain, possibly due to tissue damage caused by both methods (injection and guillotine). In contrast, isoflurane's RGS scores recorded during Ti3 might be associated with nociception/pain due to the pungency of the drug or to the pharmacological muscle relaxant effect of isoflurane. Further research is needed to establish a comprehensive study of pain during euthanasia, where RGS could be used minding the limitations that anesthetics might have on facial expression.
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Affiliation(s)
- Adriana Domínguez-Oliva
- Master in Science Program “Maestría en Ciencias Agropecuarias”, Universidad Autónoma Metropolitana, Xochimilco Campus, Mexico City 04960, Mexico
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Adriana Olmos-Hernández
- Division of Biotechnology—Bioterio and Experimental Surgery, Instituto Nacional de Rehabilitación-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City 14389, Mexico
| | - Ismael Hernández-Ávalos
- Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54714, Mexico
| | - Hugo Lecona-Butrón
- Division of Biotechnology—Bioterio and Experimental Surgery, Instituto Nacional de Rehabilitación-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City 14389, Mexico
| | - Patricia Mora-Medina
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54714, Mexico
| | - Daniel Mota-Rojas
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
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Sarhan NR, El Nashar EM, Hamza E, El-Beah SM, Alghamdi MA, Al-Khater KM, Aldahhan RA, Abul-Ela ES. Nuclear factor erythrogen-2 associated factor 2 (Nrf2) signaling is an essential molecular pathway for the anti-aging effect of whey protein in the prefrontal cortex of aging rat model (Histological and Biochemical Study). Tissue Cell 2023; 84:102192. [PMID: 37579617 DOI: 10.1016/j.tice.2023.102192] [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] [Received: 06/13/2023] [Revised: 07/29/2023] [Accepted: 08/07/2023] [Indexed: 08/16/2023]
Abstract
Aging is a highly complicated natural process. Brain aging is associated with remarkable neurodegenerative changes and oxidative damage. Whey protein (WP) has been mentioned to have an antioxidant property. Nuclear factor erythrogen-2 associated factor 2 (Nrf2) signaling pathway is an antioxidant defense system. Nrf2 activity declines with age so, its activation could be a promising therapeutic strategy for aging. This study aimed to explore the anti-aging role of WP against D-galactose (D-gal) induced age-related degenerative changes and oxidative damage in the prefrontal cortex (PFC) and investigate its underlying mechanisms. Forty adult male rats were divided into 4 groups; control, WP group received WP (28.77 mg/kg/day) by gastric tube on the 4th experimental week; D-gal (model group) received D-gal (300 mg/kg/day) intraperitoneally for 8 weeks and D-gal +WP group received WP on the 4th week of D-gal treatment. Specimens from PFC were obtained for biochemical, histological, immunohistochemical and western blot analysis. WP treatment in D-gal +WP group reduced lipid peroxidation, enhanced antioxidant enzyme activities, decreased advanced glycation end products level and improved the histological and ultrastructural alterations. Moreover, the number of neurons expressed the senescence marker; p21 and percentage area of the astrocytic marker; glial fibrillary acidic protein were significantly reduced. WP also enhanced Nrf2 pathway and its downstream targets; heme oxygenase-1 and NADPH quinone oxidoreductase 1. In conclusion WP alleviates the D-gal-induced PFC aging through activating Nrf2 pathway, reducing cell senescence and gliosis. So, it may be a potential therapeutic target to retard the aging process.
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Affiliation(s)
- Nahla Reda Sarhan
- Medical Histology and Cell Biology Department, Faculty of Medicine, Mansoura University, Egypt; Medical Histology and Cell Biology Department, Faculty of Medicine, Horus University - Egypt.
| | - Eman Mohamed El Nashar
- Department of Anatomy, college of Medicine, King Khalid University, Abha 61421, Saudi Arabia
| | - Eman Hamza
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Mansoura University, Egypt; Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Horus University - Egypt
| | - Shimaa M El-Beah
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Mansoura University, Egypt; Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Badr University in Cairo, Egypt
| | - Mansour Abdullah Alghamdi
- Department of Anatomy, college of Medicine, King Khalid University, Abha 61421, Saudi Arabia; Genomics and Personalized Medicine Unit, college of Medicine, King Khalid University, Abha 61421, Saudi Arabia
| | - Khulood Mohammed Al-Khater
- Department of Anatomy, College of Medicine, Imam Abdulrahman Bin Faisal University, P.O. Box, 2114, Dammam 31451, Saudi Arabia
| | - Rashid A Aldahhan
- Department of Anatomy, College of Medicine, Imam Abdulrahman Bin Faisal University, P.O. Box, 2114, Dammam 31451, Saudi Arabia
| | - Eman Shaaban Abul-Ela
- Medical Histology and Cell Biology Department, Faculty of Medicine, Mansoura University, Egypt
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Miao Y, Wang Y, Bi Z, Huang K, Gao J, Li X, Li S, Wei L, Zhou H, Yang C. Antifibrotic mechanism of avitinib in bleomycin-induced pulmonary fibrosis in mice. BMC Pulm Med 2023; 23:94. [PMID: 36949426 PMCID: PMC10031887 DOI: 10.1186/s12890-023-02385-9] [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: 09/07/2022] [Accepted: 03/14/2023] [Indexed: 03/24/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive interstitial lung disease characterized by alveolar epithelial cell injury and lung fibroblast overactivation. At present, only two drugs are approved by the FDA for the treatment of IPF, including the synthetic pyridinone drug, pirfenidone, and the tyrosine kinase inhibitor, nintedanib. Avitinib (AVB) is a novel oral and potent third-generation tyrosine kinase inhibitor for treating non-small cell lung cancer (NSCLC). However, the role of avitinib in pulmonary fibrosis has not yet been established. In the present study, we used in vivo and in vitro models to evaluate the role of avitinib in pulmonary fibrosis. In vivo experiments first verified that avitinib significantly alleviated bleomycin-induced pulmonary fibrosis in mice. Further in vitro molecular studies indicated that avitinib inhibited myofibroblast activation, migration and extracellular matrix (ECM) production in NIH-3T3 cells, mainly by inhibiting the TGF-β1/Smad3 signalling pathways. The cellular experiments also indicated that avitinib improved alveolar epithelial cell injury in A549 cells. In conclusion, the present findings demonstrated that avitinib attenuates bleomycin-induced pulmonary fibrosis in mice by inhibiting alveolar epithelial cell injury and myofibroblast activation.
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Affiliation(s)
- Yang Miao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China
| | - Yanhua Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China
- Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300457, People's Republic of China
| | - Zhun Bi
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China
| | - Kai Huang
- Tianjin Jikun Technology Co., Ltd. Tianjin, Tianjin, 301700, People's Republic of China
| | - Jingjing Gao
- Tianjin Jikun Technology Co., Ltd. Tianjin, Tianjin, 301700, People's Republic of China
| | - Xiaohe Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China
| | - Shimeng Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China
- Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300457, People's Republic of China
| | - Luqing Wei
- Tianjin Beichen Hospital, No. 7 Beiyi Road, Beichen District, Tianjin, 300400, People's Republic of China.
| | - Honggang Zhou
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China.
- Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300457, People's Republic of China.
| | - Cheng Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China.
- Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, 300457, People's Republic of China.
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Circular RNA_HIPK3-Targeting miR-93-5p Regulates KLF9 Expression Level to Control Acute Kidney Injury. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2023; 2023:1318817. [PMID: 36846202 PMCID: PMC9949962 DOI: 10.1155/2023/1318817] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/06/2022] [Accepted: 10/11/2022] [Indexed: 02/18/2023]
Abstract
Acute kidney injury (AKI) is a clinical syndrome caused by various reasons that results in the rapid decline of renal function in a short period of time. Severe AKI can lead to multiple organ dysfunction syndrome. Circular RNA HIPK3 (circHIPK3) derived from the HIPK3 gene is involved in multiple inflammatory processes. The present research was performed to explore the function of circHIPK3 on AKI. The AKI model was established by ischemia/reperfusion (I/R) in C57BL/6 mice or hypoxia/reoxygenation (H/R) in HK-2 cells. The function and mechanism of circHIPK3 on AKI were explored via biochemical index measurement; hematoxylin and eosin (HE) staining; 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT); flow cytometry; enzyme-linked immunosorbent assay (ELISA); western blot; quantitative real-time polymerase chain reaction (RT-qPCR); detection of reactive oxygen species (ROS) and adenosine triphosphate (ATP); and luciferase reporter assays. circHIPK3 was upregulated in kidney tissues of I/R-induced mice and in H/R-treated HK-2 cells, while the microRNA- (miR-) 93-5p level was decreased in H/R-stimulated HK-2 cells. Furthermore, circHIPK3 silencing or miR-93-5p overexpression could reduce the level of proinflammatory factors and oxidative stress and recover the cell viability in H/R-stimulated HK-2 cells. Meanwhile, the luciferase assay showed that Krüppel-like transcription factor 9 (KLF9) was the downstream target of miR-93-5p. Forced expression of KLF9 blocked the function of miR-93-5p on H/R-treated HK-2 cells. Knockdown of circHIPK3 improved the renal function and reduced the apoptosis level in vivo. In conclusion, circHIPK3 knockdown alleviated oxidative stress and apoptosis and inhibited inflammation in AKI via miR-93-5p-mediated downregulation of the KLF9 signal pathway.
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11
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Zhang W, Yu M, Zhang C, Yu Q, Xu S, Yan Q, Guo Z, Xu Y. Active Ingredient Paeonol of Jijiu Huiyang Decoction Alleviates Isoproterenol-Induced Chronic Heart Failure via the GSK3A/PPAR α Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:3271057. [PMID: 36785789 PMCID: PMC9922181 DOI: 10.1155/2023/3271057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/29/2022] [Accepted: 10/15/2022] [Indexed: 02/05/2023]
Abstract
Background The pharmacological mechanism of the traditional Chinese medicine formula-Jijiu Huiyang decoction (JJHYD), which contains several herbal medicines for the treatment of chronic heart failure (CHF), is yet unknown. Method and Materials. The main active components of JJHYD were analyzed by ultrahigh-performance liquid chromatography-mass spectrometry (UHPLC-MS/MS). The target genes of JJHYD and CHF were retrieved through multiple databases, a drug-ingredient-target-disease network was created, and KEGG enrichment and GO analyses were carried out. The binding ability of paeonol and Glycogen Synthase Kinase-3 alpha (GSK3A) was confirmed by molecular docking. CHF animal model and cell model were constructed. The effects of paeonol on cardiac dysfunction, myocardial hypertrophy, cardiac lipid accumulation, and myocardial apoptosis were detected by echocardiography, histopathology, and flow cytometry, respectively. The effects of paeonol on the expression of myocardial hypertrophy index, GSK3A, and genes or proteins related to the PPARα pathway were determined by qRT-PCR or western blot. Result UHPLC-MS/MS analysis combined with database verification showed a total of 227 chemical components in JJHYD, among which paeonol was the one with heart-protective roles and had the highest content. Paeonol alleviated isoproterenol-induced cardiac lipid accumulation, cardiac hypertrophy, and myocardial dysfunction and inhibited the activation of the PPARα pathway, while overexpression of GSK3A reversed these effects of paeonol. However, the reversal effects of GSK3A overexpression could be offset by siPPARα. Conclusion As the main active substance of JJHYD, paeonol participates in the protection of CHF by targeting the GSK3A/PPARα signaling pathway to reduce lipid toxicity.
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Affiliation(s)
- Wei Zhang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, China
| | - Manli Yu
- Department of Cardiology, Changhai Hospital, Navy Medical University, China
| | - Cenxi Zhang
- Department of Cardiology, Second Affiliated Hospital of Naval Medical University, China
| | - Qing Yu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, China
| | - Sheng Xu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, China
| | - Qiongzhi Yan
- Department of Traditional Chinese Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, China
| | - Zhifu Guo
- Department of Cardiology, Changhai Hospital, Navy Medical University, China
| | - Yawei Xu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, China
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12
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Ahmadi-Noorbakhsh S, Farajli Abbasi M, Ghasemi M, Bayat G, Davoodian N, Sharif-Paghaleh E, Poormoosavi SM, Rafizadeh M, Maleki M, Shirzad-Aski H, Kargar Jahromi H, Dadkhah M, Khalvati B, Safari T, Behmanesh MA, Khoshnam SE, Houshmand G, Talaei SA. Anesthesia and analgesia for common research models of adult mice. Lab Anim Res 2022; 38:40. [PMID: 36514128 PMCID: PMC9746144 DOI: 10.1186/s42826-022-00150-3] [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: 05/23/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022] Open
Abstract
Anesthesia and analgesia are major components of many interventional studies on laboratory animals. However, various studies have shown improper reporting or use of anesthetics/analgesics in research proposals and published articles. In many cases, it seems "anesthesia" and "analgesia" are used interchangeably, while they are referring to two different concepts. Not only this is an unethical practice, but also it may be one of the reasons for the proven suboptimal quality of many animal researches. This is a widespread problem among investigations on various species of animals. However, it could be imagined that it may be more prevalent for the most common species of laboratory animals, such as the laboratory mice. In this review, proper anesthetic/analgesic methods for routine procedures on laboratory mice are discussed. We considered the available literature and critically reviewed their anesthetic/analgesic methods. Detailed dosing and pharmacological information for the relevant drugs are provided and some of the drugs' side effects are discussed. This paper provides the necessary data for an informed choice of anesthetic/analgesic methods in some routine procedures on laboratory mice.
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Affiliation(s)
- Siavash Ahmadi-Noorbakhsh
- grid.411705.60000 0001 0166 0922Preclinical Core Facility (TPCF), Tehran University of Medical Sciences, Tehran, Iran ,grid.415814.d0000 0004 0612 272XThe National Ethics Committee for Biomedical Research, Floor 13th, Complex A, Ministry of Health and Medical Education, Eyvanak Blvd., Shahrake Gharb, Tehran, Iran
| | - Mohammad Farajli Abbasi
- grid.412105.30000 0001 2092 9755Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Maedeh Ghasemi
- grid.411036.10000 0001 1498 685XDepartment of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Gholamreza Bayat
- grid.411705.60000 0001 0166 0922Department of Physiology-Pharmacology-Medical Physic, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Nahid Davoodian
- grid.412237.10000 0004 0385 452XEndocrinology and Metabolism Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Ehsan Sharif-Paghaleh
- grid.411705.60000 0001 0166 0922Preclinical Core Facility (TPCF), Tehran University of Medical Sciences, Tehran, Iran ,grid.411705.60000 0001 0166 0922Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran ,grid.13097.3c0000 0001 2322 6764Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, England
| | - Seyedeh Mahsa Poormoosavi
- grid.512425.50000 0004 4660 6569Department of Histology, School of Medicine, Research and Clinical Center for Infertility, Dezful University of Medical Sciences, Dezful, Iran
| | - Melika Rafizadeh
- grid.411600.2Department of Pharmacology, Medical School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Maleki
- grid.449129.30000 0004 0611 9408Department of Physiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Hesamaddin Shirzad-Aski
- grid.411747.00000 0004 0418 0096Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Hossein Kargar Jahromi
- grid.444764.10000 0004 0612 0898Research Center for Non-Communicable Disease, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Masoomeh Dadkhah
- grid.411426.40000 0004 0611 7226Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Bahman Khalvati
- grid.413020.40000 0004 0384 8939Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Tahereh Safari
- grid.488433.00000 0004 0612 8339School of Medicine, Department of Physiology, PhD, Zahedan University of Medical Sciences, Zahedan, Iran ,grid.488433.00000 0004 0612 8339Pharmacology Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohammad Amin Behmanesh
- grid.512425.50000 0004 4660 6569Department of Histology, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - Seyed Esmaeil Khoshnam
- grid.411230.50000 0000 9296 6873Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Gholamreza Houshmand
- grid.411623.30000 0001 2227 0923Psychiatry and Behavioral Sciences Research Center, Addiction Institute, Department of Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sayyed Alireza Talaei
- grid.444768.d0000 0004 0612 1049Physiology Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
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13
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Guo W, Wang X, Liu F, Chen S, Wang S, Zhang Q, Yuan L, Du S. Acteoside alleviates dextran sulphate sodium‑induced ulcerative colitis via regulation of the HO‑1/HMGB1 signaling pathway. Mol Med Rep 2022; 26:360. [PMID: 36281914 PMCID: PMC9641715 DOI: 10.3892/mmr.2022.12877] [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] [Received: 04/09/2022] [Accepted: 09/02/2022] [Indexed: 11/05/2022] Open
Abstract
Ulcerative colitis (UC) is a significant burden on human health, and the elucidation of the mechanism by which it develops has potential for the prevention and treatment of UC. It has been reported that acteoside (ACT) exhibits strong anti‑inflammatory activity. In the present study, it was hypothesized that ACT may exert a protective effect against UC. The effects of ACT on inflammation, oxidative stress and apoptosis were evaluated using dextran sulphate sodium (DSS)‑treated mice and DSS‑treated human colorectal adenocarcinoma Caco‑2 cells, which have an epithelial morphology. The results demonstrated that the ACT‑treated mice with DSS‑induced UC exhibited significantly reduced colon inflammation, as demonstrated by a reversal in body weight loss, colon shortening, disease activity index score, inflammation, oxidative stress and colonic barrier dysfunction. Further in vivo experiments demonstrated that ACT inhibited DSS‑induced apoptosis in colon tissues, as demonstrated by the results of the TUNEL assay and the altered protein expression levels of Bax, cleaved caspase‑3 and Bcl‑2. Furthermore, DSS significantly stimulated the protein expression levels of high mobility group box 1 protein (HMGB1), which serves a central role in the initiation and progression of UC, an effect which was markedly inhibited by ACT. Finally, DSS significantly decreased the protein expression levels of heme oxygenase‑1 (HO‑1) in colon tissues and the effect of ACT on GSH, apoptotic proteins and HMGB1 was markedly attenuated in the presence of the HO‑1 inhibitor tin protoporphyrin. In conclusion, ACT ameliorated colon inflammation through HMGB1 inhibition in a HO‑1‑dependent manner.
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Affiliation(s)
- Wenjuan Guo
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, P.R. China
| | - Xiaodi Wang
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, P.R. China
| | - Fang Liu
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, P.R. China
| | - Shuo Chen
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, P.R. China
| | - Shuai Wang
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, P.R. China
| | - Qingrui Zhang
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, P.R. China
| | - Lan Yuan
- Peking University Medical and Health Analysis Center, Peking University Health Science Center, Beijing 100191, P.R. China
| | - Shiyu Du
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing 100029, P.R. China
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14
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Kong W, Zhu H, Zheng S, Yin G, Yu P, Shan Y, Liu X, Ying R, Zhu H, Ma S. Larotrectinib induces autophagic cell death through AMPK/mTOR signalling in colon cancer. J Cell Mol Med 2022; 26:5539-5550. [PMID: 36251949 DOI: 10.1111/jcmm.17530] [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: 05/16/2022] [Revised: 08/09/2022] [Accepted: 08/16/2022] [Indexed: 01/10/2023] Open
Abstract
Larotrectinib (Lar) is a highly selective and potent small-molecule inhibitor used in patients with tropomyosin receptor kinase (TRK) fusion-positive cancers, including colon cancer. However, the underlying molecular mechanisms specifically in patients with colon cancer have not yet been explored. Our data showed that Lar significantly suppressed proliferation and migration of colon cancer cells. In addition, Lar suppressed the epithelial-mesenchymal transition (EMT) process, as evidenced by elevation in E-cadherin (E-cad), and downregulation of vimentin and matrix metalloproteinase (MMP) 2/9 expression. Furthermore, Lar was found to activate autophagic flux, in which Lar increased the ratio between LC3II/LC3I and decreased the expression of p62 in colon cancer cells. More importantly, Lar also increased AMPK phosphorylation and suppressed mTOR phosphorylation in colon cancer cells. However, when we silenced AMPK in colon cancer cells, Lar-induced accumulation of autolysomes as well as Lar-induced suppression of the EMT process were significantly diminished. An in vivo assay also confirmed that tumour volume and weight decreased in Lar-treated mice than in control mice. Taken together, this study suggests that Lar significantly suppresses colon cancer proliferation and migration by activating AMPK/mTOR-mediated autophagic cell death.
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Affiliation(s)
- Wencheng Kong
- Zhejiang Province Key Laboratory of Anti-cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.,Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hangzhang Zhu
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Sixing Zheng
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Guang Yin
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Panpan Yu
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuqiang Shan
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xinchun Liu
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Rongchao Ying
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hong Zhu
- Zhejiang Province Key Laboratory of Anti-cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Shenglin Ma
- Translational Medicine Research Center, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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15
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Clarkson JM, Martin JE, McKeegan DEF. A review of methods used to kill laboratory rodents: issues and opportunities. Lab Anim 2022; 56:419-436. [PMID: 35611553 DOI: 10.1177/00236772221097472] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Rodents are the most widely used species for scientific purposes. A critical pre-requisite of their use, based on utilitarian ethical reasoning, is the provision of a humane death when necessary for scientific or welfare grounds. Focussing on the welfare challenges presented by current methods, we critically evaluate the literature, consider emerging methodologies that may have potential for refinement and highlight knowledge gaps for future research. The evidence supports the conclusion that scientists and laboratory personnel should seek to avoid killing laboratory rodents by exposing them to carbon dioxide (CO2), unless exploiting its high-throughput advantage. We suggest that stakeholders and policymakers should advocate for the removal of CO2 from existing guidelines, instead making its use conditionally acceptable with justification for additional rationale for its application. With regards to physical methods such as cervical dislocation, decapitation and concussion, major welfare concerns are based on potential inaccuracy in application and their susceptibility to high failure rates. There is a need for independent quality-controlled training programmes to facilitate optimal success rates and the development of specialist tools to improve outcomes and reliability. Furthermore, we highlight questions surrounding the inconsistent inclusion criteria and acceptability of physical methods in international regulation and/or guidance, demonstrating a lack of cohesion across countries and lack of a comprehensive 'gold standard' methodology. We encourage better review of new data and championing of open access scientific resources to advocate for best practice and enable significant changes to policy and legislation to improve the welfare of laboratory rodents at killing.
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Affiliation(s)
- Jasmine M Clarkson
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, UK
| | - Jessica E Martin
- The Royal (Dick) School of Veterinary Studies and The Roslin Institute, The University of Edinburgh, UK
| | - Dorothy E F McKeegan
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, UK
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16
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Li Y, Li N, Liu J, Wang T, Dong R, Ge D, Peng G. Gegen Qinlian Decoction Alleviates Experimental Colitis and Concurrent Lung Inflammation by Inhibiting the Recruitment of Inflammatory Myeloid Cells and Restoring Microbial Balance. J Inflamm Res 2022; 15:1273-1291. [PMID: 35237061 PMCID: PMC8884713 DOI: 10.2147/jir.s352706] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/04/2022] [Indexed: 12/12/2022] Open
Abstract
Objective Ulcerative colitis (UC) as one of the intractable diseases in gastroenterology seriously threatens human health. Respiratory pathology is a representative extraintestinal manifestation of UC affecting the quality of life of patients. Gegen Qinlian Decoction (GQD) is a classical traditional Chinese medicine prescription for UC or acute lung injury. This study was aimed to reveal the therapeutic effect of GQD on UC and its pulmonary complications and uncover its molecular mechanism mediated by myeloid cells and microbiota. Methods Mice with DSS-induced colitis were orally administrated with GQD. Overall vital signs were assessed by body weight loss and disease activity index (DAI). Pulmonary general signs were evaluated by pulmonary pathology and lung function. The mechanism of GQD relieving UC was characterized by detecting myeloid cells (neutrophils, macrophages, inflammatory monocytes, and resident monocytes) in colonic and lung tissues, related inflammatory cytokines, as well as the microbiota in bronchoalveolar lavage fluid (BALF) and feces. Results GQD significantly reduced weight loss, DAI scores, and lung injury but improved the lung function of colitis mice. The DSS-induced colonic and concurrent pulmonary inflammation were also alleviated by GQD, as indicated by the down-regulated expressions of inflammatory cytokines (TNF-α, IL-1β, IL-6, CCR2, and CCL2) and the suppressed recruitment of neutrophils and inflammatory monocytes. Meanwhile, GQD greatly improved intestinal microbiota imbalance by enriching Ruminococcaceae UCG-013 while decreasing Parabacteroides, [Eubacterium]_fissicatena_group, and Akkermansia in the feces of colitis mice. Expectantly, GQD also restored lung microbiota imbalance by clearing excessive Coprococcus 2 and Ochrobactrum in the BALF of colitis mice. Finally, significant correlations appeared between GQD-mediated specific bacteria and inflammatory cytokines or immune cells. Conclusion GQD could alleviate UC by decreasing excessive inflammatory myeloid cells and cytokines, and reshaping the microbiota between the colon and lung, which contributes to clarifying the mechanism by which GQD ameliorates colitis-associated pulmonary inflammation.
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Affiliation(s)
- Yalan Li
- Department of Immunology and Microbiology, School of Life Sciences, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Na Li
- Department of Immunology and Microbiology, School of Life Sciences, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Jiajing Liu
- Department of Immunology and Microbiology, School of Life Sciences, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Tieshan Wang
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Ruijuan Dong
- Experimental Teaching Center, School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Dongyu Ge
- Experimental Teaching Center, School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Guiying Peng
- Department of Immunology and Microbiology, School of Life Sciences, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
- Correspondence: Guiying Peng, Email
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17
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Shehata O, Aboelhadid SM, Arafa WM, Moawad UK, Hussien KH, Ali MI, El-Ashram S, Gawad SSA, Abdel-Aziz SAA. Assessment of the efficacy of thymol against Toxocara vitulorum in experimentally infected rats. J Parasit Dis 2022; 46:454-465. [DOI: 10.1007/s12639-022-01465-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 01/09/2022] [Indexed: 10/19/2022] Open
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18
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Yi D, Zhang D, He J. Long non-coding RNA LIFR-AS1 suppressed the proliferation, angiogenesis, migration and invasion of papillary thyroid cancer cells via the miR-31-5p/SIDT2 axis. Cell Cycle 2021; 20:2619-2637. [PMID: 34781815 DOI: 10.1080/15384101.2021.1995129] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Long non-coding RNA LIFR-AS1 is low-expressed in many cancers, but its functions in papillary thyroid carcinoma (PTC) were not defined and require further study. The relationship between LIFR-AS1 expression and clinicopathological characteristics of patients with PTC was statistically analyzed. The downregulation of LIFR-AS1 in PTC tissues and cell lines was predicted by bioinformatics analysis and verified by qRT-PCR. After overexpressing or silencing LIFR-AS1, the regulatory role of LIFR-AS1 in PTC was examined by performing MTT, colony formation, wound healing, Transwell, ELISA, tube formation and xenograft tumor experiment. MiR-31-5p and SID1 transmembrane family member 2 (SIDT2) expressions in PTC tissues or cell lines were detected by qRT-PCR, Western blot, or in situ hybridization. The relationship between miR-31-5p and LIFR-AS1/SIDT2 was predicted by LncBase, TargetScan or Pearson correlation test and then verified by Dual-Luciferase Reporter assay, RNA pull-down assay and qRT-PCR. The regulatory effect of LIFR-AS1/miR-31-5p/SIDT2 axis on the biological behaviors of PTC cells was confirmed by functional experiments and rescue experiments mentioned above. The tumor size and lymphatic metastasis were correlated with LIFR-AS1 overexpression. Overexpressed LIFR-AS1 suppressed tumorigenesis in vivo. LIFR-AS1 and SIDT2 expressions were suppressed in PTC tissues, while that of miR-31-5p was elevated in PTC tissues. LIFR-AS1 was negatively correlated with miR-31-5p. LIFR-AS1 sponged miR-31-5p to upregulate SIDT2, thereby inhibiting the viability, proliferation, migration, invasion, and the secretion of vascular endothelial growth factor (VEGF) of PTC cells and angiogenesis of human umbilical vein endothelial cells (HUVECs). This paper demonstrates that LIFR-AS1/miR-31-5p/SIDT2 axis modulated the development of PTC.
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Affiliation(s)
- Dan Yi
- Department of Nuclear Medicine, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan Province, China
| | - Dongxin Zhang
- Department of Nuclear Medicine, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan Province, China
| | - Jie He
- Department of Breast Nail Surgery, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan Province, China
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19
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Deng X, Wang Y, Tian L, Yang M, He S, Liu Y, Khan A, Li Y, Cao J, Cheng G. Anneslea fragrans Wall. ameliorates ulcerative colitis via inhibiting NF-κB and MAPK activation and mediating intestinal barrier integrity. JOURNAL OF ETHNOPHARMACOLOGY 2021; 278:114304. [PMID: 34116185 DOI: 10.1016/j.jep.2021.114304] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/10/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Anneslea fragrans Wall. is traditionally used as a folk medicine in treating indigestion, fever, dysentery, diarrhea, and liver inflammation in China, Vietnam and Cambodia. However, its anti-inflammatory activity and mechanism under a safety therapeutic dose as well as the main chemical components have not yet been fully investigated. AIM OF THE STUDY This study aimed to explore the therapeutic effect and possible molecular mechanisms of aqueous-methanol extract (AFE) of A. fragrans leaves on dextran sodium sulfate (DSS)-induced ulcerative colitis (UC) mice and illustrate its potent anti-inflammatory chemical compounds. MATERIALS AND METHODS The AFE was obtained and then analyzed by high performance liquid chromatography (HPLC). Phytochemical investigation on the AFE was carried out to isolate and characterize its major components. The acute toxicity test was performed to provide the safety information of AFE. Subsequently, the protective effect of AFE on DSS-induced UC was evaluated by physiological changes, histopathological and immunohistochemical analysis, and the expressions of antioxidant enzyme, pro-inflammatory cytokines and anti-inflammatory cytokines. The expressions of target proteins in nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) were determined by western blot analysis. The tight junction (TJ) proteins in colon tissue were performed by immunohistochemical technique for evaluating the intestinal barrier integrity. RESULTS HPLC guided isolation of AFE resulted into two dihydrochalcones, which were elucidated as vacciniifolin (1) and confusoside (2). Acute toxicity evaluation revealed that median lethal dose (LD50) of AFE was greater than 5000 mg/kg. Furthermore, AFE significantly attenuated ulcerative colitis symptoms, suppressed myeloperoxidase activity, and increased the expression of superoxide dismutase and glutathione. AFE treatment could also reduce the levels of tumor necrosis factor-α, interleukin-1β, and interleukin-6 and increase the levels of interleukin-4 and interleukin-10 in colon tissues and serum of DSS-induced UC mice. In addition, AFE significantly increased the expression of zonula occludens-1, occludin and claudin-1, and inhibited the phosphorylation of target protein of the NF-κB and MAPK signaling pathways in colon tissue. CONCLUSION Dihydrochalcone glycosides are the major chemical constituents in AFE. AFE ameliorated DSS-induced UC in mice by inhibiting the inflammatory response via modulation of NF-κB and MAPK pathways and maintaining the intestinal barrier function, indicating that the plant A. fragrans could be used as a therapeutic candidate for ulcerative colitis.
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Affiliation(s)
- Xiaocui Deng
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yudan Wang
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China
| | - Lei Tian
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China
| | - Meilian Yang
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China
| | - Shuyue He
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yaping Liu
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China
| | - Afsar Khan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Yanping Li
- College of Pharmaceutic Science, Yunnan University of Traditional Chinese Medicine, Kunming, 650000, China
| | - Jianxin Cao
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China
| | - Guiguang Cheng
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, 650500, China.
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20
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Zhao T, Wang Z, Chi Y, Ni C, Zheng X. TFEC contributes to cardiac hypertrophy by inhibiting AMPK/mTOR signaling. Exp Ther Med 2021; 22:1271. [PMID: 34594408 PMCID: PMC8456502 DOI: 10.3892/etm.2021.10706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/09/2021] [Indexed: 12/14/2022] Open
Abstract
The underlying mechanism of cardiac hypertrophy has not yet been fully elucidated. The present study aimed to explore the function of transcription factor EC (TFEC) in mouse models of cardiac hypertrophy and to determine the underlying mechanism. Pressure-overload cardiac hypertrophy and angiotensin II (AngII) infusion-induced animal models of cardiac hypertrophy were established in vivo. The expression of TFEC was explored via western blotting. The results demonstrated that TFEC expression was significantly increased in the hearts of mice with pressure overload- and AngII-induced hypertrophy. Injection of rAd-short hairpin (sh)-TFEC significantly decreased the expression of TFEC in heart tissues compared with group injected with rAd-negative control (NC). Furthermore, the expression levels of atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP) and β-myosin heavy chain (β-MHC) were increased in the hearts of AngII-treated mice; however, compared with rAd-NC transfection, transfection with rAd-sh-TFEC decreased the expression levels of ANP, BNP and β-MHC. The results from echocardiographic analysis indicated that transfection with rAd-sh-TFEC improved the cardiac function of AngII-treated mice compared with transfection with rAd-NC. In addition, the AngII-induced increase in cardiomyocyte size could be reversed by TFEC knockdown in primary cardiomyocytes. The elevated expression levels of ANP, BNP and β-MHC induced by AngII could be partially abolished following TFEC knockdown. The results from western blotting demonstrated that TFEC overexpression decreased the expression of phosphorylated AMP-activated protein kinase (AMPK)/acetyl-CoA carboxylase (ACC) but increased the expression of phosphorylated mechanistic target of rapamycin (mTOR). Furthermore, Compound C significantly suppressed the activation of AMPK/ACC but increased the activation of mTOR, even in primary cardiomyocytes transfected with rAd-sh-TFEC. In conclusion, the findings from this study demonstrated that TFEC was overexpressed in the hearts of mice with cardiac hypertrophy and that silencing TFEC may improve AngII-induced cardiac hypertrophy and dysfunction by activating AMPK/mTOR signaling.
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Affiliation(s)
- Ting Zhao
- Department of Cardiology, Weapon Industry 521 Hospital, Xi'an, Shanxi 710065, P.R. China
| | - Zhenyu Wang
- Department of Cardiology, Weapon Industry 521 Hospital, Xi'an, Shanxi 710065, P.R. China
| | - Yehong Chi
- Department of Cardiology, Weapon Industry 521 Hospital, Xi'an, Shanxi 710065, P.R. China
| | - Chunmei Ni
- Department of Cardiology, Weapon Industry 521 Hospital, Xi'an, Shanxi 710065, P.R. China
| | - Xudan Zheng
- Department of Cardiology, Weapon Industry 521 Hospital, Xi'an, Shanxi 710065, P.R. China
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21
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Li R, Che W, Liang N, Deng S, Song Z, Yang L. Silent FOSL1 Enhances the Radiosensitivity of Glioma Stem Cells by Down-Regulating miR-27a-5p. Neurochem Res 2021; 46:3222-3246. [PMID: 34420141 DOI: 10.1007/s11064-021-03427-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/06/2021] [Accepted: 08/09/2021] [Indexed: 12/16/2022]
Abstract
Since few reports have mentioned the role of FOSL1 in the radiotherapy sensitivity of glioma, this study would dig deep into this aspect. Cancer stem cells (CSCs) isolated by magnetic bead assay were identified by microscopy, qRT-PCR and western blot. The number of apoptotic cells was counted 72 h after X-ray irradiation to evaluate the sensitivity of cancer cells to radiotherapy. The effects of radiotherapy, FOSL1 and miR-27a-5p on basic cell functions were detected by functional experiments. The expressions of FOSL1, apoptosis-related genes and miR-27a-5p were detected by qRT-PCR and western blot as needed. The differential expression of FOSL1 and the effect of miR-27a-5p on survival rate were analyzed using GEPIA and UALCAN, respectively. FOSL1 was found highly expressed in glioma cells and patients. The appearance of spherical cells and high expressions of CSC-related markers indicated the successful isolation of CSC-like cells. The increment of X-ray dose enhanced the sensitivity of cancer cells to radiotherapy. Radiotherapy down-regulated cell viability and the expressions of FOSL1 and Bcl-2, but up-regulated cell apoptosis and the expressions of cleaved caspase-3 and Bax, which could be partially reversed by overexpressed FOSL1 or further enhanced by shFOSL1. MiR-27a-5p was highly expressed in in patients with glioma, which was associated with poor prognosis, while shFOSL1-inhibited miR-27a-5p expression enhanced the sensitivity of glioma stem cells to radiotherapy. In vivo experiments further verified the results obtained from in vitro experiments. Silent FOSL1 strengthened the radiosensitivity of glioma by down-regulating miR-27a-5p.
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Affiliation(s)
- Rong Li
- Department of Radiation Oncology, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Wuqiang Che
- Department of Neurosurgery, Kunming Children's Hospital, No. 288, Qianxing Road, Kunming, 650030, China
| | - Naizheng Liang
- Department of Neurosurgery, Kunming Children's Hospital, No. 288, Qianxing Road, Kunming, 650030, China
| | - Shu Deng
- Department of Neurosurgery, Kunming Children's Hospital, No. 288, Qianxing Road, Kunming, 650030, China
| | - Zhijie Song
- Department of Neurosurgery, Kunming Children's Hospital, No. 288, Qianxing Road, Kunming, 650030, China
| | - Lei Yang
- Department of Neurosurgery, Kunming Children's Hospital, No. 288, Qianxing Road, Kunming, 650030, China.
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22
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Functional NMDA receptors are expressed by human pulmonary artery smooth muscle cells. Sci Rep 2021; 11:8205. [PMID: 33859248 PMCID: PMC8050278 DOI: 10.1038/s41598-021-87667-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 03/29/2021] [Indexed: 11/08/2022] Open
Abstract
N-methyl-d-aspartate (NMDA) receptors are widely expressed in the central nervous system. However, their presence and function at extraneuronal sites is less well characterized. In the present study, we examined the expression of NMDA receptor subunit mRNA and protein in human pulmonary artery (HPA) by quantitative polymerase chain reaction (PCR), immunohistochemistry and immunoblotting. We demonstrate that both GluN1 and GluN2 subunit mRNAs are expressed in HPA. In addition, GluN1 and GluN2 (A–D) subunit proteins are expressed by human pulmonary artery smooth muscle cells (HPASMCs) in vitro and in vivo. These subunits localize on the surface of HPASMCs and form functional ion channels as evidenced by whole-cell patch-clamp electrophysiology and reduced phenylephrine-induced contractile responsiveness of human pulmonary artery by the NMDA receptor antagonist MK801 under hypoxic condition. HPASMCs also express high levels of serine racemase and vesicular glutamate transporter 1, suggesting a potential source of endogenous agonists for NMDA receptor activation. Our findings show HPASMCs express functional NMDA receptors in line with their effect on pulmonary vasoconstriction, and thereby suggest a novel therapeutic target for pharmacological modulations in settings associated with pulmonary vascular dysfunction.
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23
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Shi-Zhen-An-Shen Decoction, a Herbal Medicine That Reverses Cuprizone-Induced Demyelination and Behavioral Deficits in Mice Independent of the Neuregulin-1 Pathway. Neural Plast 2021; 2021:8812362. [PMID: 33708250 PMCID: PMC7932787 DOI: 10.1155/2021/8812362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 01/15/2021] [Accepted: 02/06/2021] [Indexed: 11/25/2022] Open
Abstract
Shi-Zhen-An-Shen decoction (SZASD), a Chinese herbal medicine that is a liquor extracted from plants by boiling, has been reported to be effective in treating schizophrenia. However, the mechanism is unclear. Abnormal demyelination has been implicated in schizophrenia. The aim of this study was to investigate the effect of SZASD on myelin in demyelinated mice exhibiting schizophrenia-like behaviors. Sixty male C57BL/6 mice were randomly divided into six groups (n = 10 per group): (1) control group, (2) cuprizone (CPZ, a copper chelator that induced demyelination, 0.2% w/w)+saline, (3) CPZ+low-dose SZASD (8.65 g·kg−1·d−1), (4) CPZ+medium-dose SZASD (17.29 g·kg−1·d−1), (5) CPZ+high-dose SZASD (25.94 g·kg−1·d−1), and (6) CPZ+quetiapine (QTP, an atypical antipsychotic that served as a positive treatment control, 10 mg·kg−1·d−1). Mice in groups 2-6 were treated with CPZ added to rodent chow for six weeks to induce demyelination. During the last two weeks, these mice were given an oral gavage of sterile saline, SZASD, or quetiapine. Behavioral tests and brain analyses were conducted after the last treatment. The brain expression of myelin basic protein (MBP) and neuregulin-1 (NRG-1) was assessed using immunohistochemistry and Western blots. CPZ induced significant schizophrenia-like behaviors in the mice, including reduced nest-building activity and sensory gating deficits. Hyperlocomotor activity was accompanied by significant reductions in MBP expression in the corpus callosum, hippocampus, and cerebral cortex. However, both QTP and SZASD significantly reversed the schizophrenia-like behaviors and demyelination in CPZ-fed mice. The QTP and medium-dose SZASD resulted in better therapeutic effects compared to the low and high SZASD doses. Reduced NRG-1 expression was observed in CPZ-fed mice compared with controls, but neither QTP nor SZASD showed significant influence on NRG-1 expression in the hippocampus. Together, SZASD showed a therapeutic effect on demyelinated mice, and the improvement of demyelination might not be through the NRG-1 pathway.
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24
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Best HL, Clare AJ, McDonald KO, Wicky HE, Hughes SM. An altered secretome is an early marker of the pathogenesis of CLN6 Batten disease. J Neurochem 2021; 157:764-780. [PMID: 33368303 DOI: 10.1111/jnc.15285] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/20/2020] [Accepted: 12/17/2020] [Indexed: 12/13/2022]
Abstract
Neuronal ceroid lipofuscinoses (NCLs) are a group of inherited childhood neurodegenerative disorders. In addition to the accumulation of auto-fluorescent storage material in lysosomes, NCLs are largely characterised by region-specific neuroinflammation that can predict neuron loss. These phenotypes suggest alterations in the extracellular environment-making the secretome an area of significant interest. This study investigated the secretome in the CLN6 (ceroid-lipofuscinosis neuronal protein 6) variant of NCL. To investigate the CLN6 secretome, we co-cultured neurons and glia isolated from Cln6nclf or Cln6± mice, and utilised mass spectrometry to compare protein constituents of conditioned media. The significant changes noted in cathepsin enzymes, were investigated further via western blotting and enzyme activity assays. Viral-mediated gene therapy was used to try and rescue the wild-type phenotype and restore the secretome-both in vitro in co-cultures and in vivo in mouse plasma. In Cln6nclf cells, proteomics revealed a marked increase in catabolic and cytoskeletal-associated proteins-revealing new similarities between the pathogenic signatures of NCLs with other neurodegenerative disorders. These changes were, in part, corrected by gene therapy intervention, suggesting these proteins as candidate in vitro biomarkers. Importantly, these in vitro changes show promise for in vivo translation, with Cathepsin L (CTSL) activity reduced in both co-cultures and Cln6nclf plasma samples post gene-therapy. This work suggests the secretome plays a role in CLN6 pathogenesis and highlights its potential use as an in vitro model. Proteomic changes present a list of candidate biomarkers for monitoring disease and assessing potential therapeutics in future studies.
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Affiliation(s)
- Hannah L Best
- Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin, New Zealand
| | - Alison J Clare
- Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin, New Zealand
| | - Kirstin O McDonald
- Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin, New Zealand
| | - Hollie E Wicky
- Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin, New Zealand
| | - Stephanie M Hughes
- Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, Dunedin, New Zealand
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25
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Reimer JN, Schuster CJ, Knight CG, Pang DSJ, Leung VSY. Intraperitoneal injection of sodium pentobarbital has the potential to elicit pain in adult rats (Rattus norvegicus). PLoS One 2020; 15:e0238123. [PMID: 32881944 PMCID: PMC7470368 DOI: 10.1371/journal.pone.0238123] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 08/10/2020] [Indexed: 12/17/2022] Open
Abstract
An effective and pain-free killing method is required to achieve the goal of euthanasia, a "good death". Overdose of sodium pentobarbital (PB) by intraperitoneal (IP) injection is a widely accepted technique in laboratory rats, but questions remain regarding pain associated with administration. As PB rapidly causes sedation and loss of consciousness, most studies have relied on indirect evidence of pain. The objective of this study was to assess pain associated with IP PB using an appropriate vehicle control. Adult male and female Sprague Dawley (SD) and female Wistar rats (N = 84) were block randomised by sex and strain to receive one of three treatments: 1) 800 mg/kg PB (pH 11), 2) saline or 3) vehicle controls (pH 11 or 12.5). Behavior (Rat Grimace Scale (RGS), writhing, back arching) was evaluated at baseline, before loss of righting reflex (LORR, PB group), and at 80s, 151s and 10 min post-injection (PI; saline and vehicle control groups). In the PB group, mean time to LORR was 78 ± 7.9 seconds. In the vehicle control groups, RGS scores were increased at 151s PI (SD: p = 0.0002, 95%CI 0.73 to 0.20) from baseline, as was relative frequency of writhing (SD: p < 0.0001; Wistar; p = 0.0004). RGS scores remained elevated 10 mins PI (SD: p = 0.0005, 95%CI 0.71 to 0.18; Wistar: p = 0.0234, 95%CI 0.91 to 0.07) but the relative frequency of writhing did not (p > 0.999). The RGS scores and the relative frequency of writhing remained low in the PB and saline groups (p > 0.05). These results show that, vehicle controls for IP PB result in signs associated with pain, pain may not be experienced following IP PB when LORR occurs quickly, and that the effects of PB limit behavioral pain assessments.
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Affiliation(s)
- J. N. Reimer
- Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - C. J. Schuster
- Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - C. G. Knight
- Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - D. S. J. Pang
- Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Groupe de Recherche de Pharmacologie Animale du Québec (GREPAQ), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - V. S. Y. Leung
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Groupe de Recherche de Pharmacologie Animale du Québec (GREPAQ), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
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26
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Laferriere CA, Pang DSJ. Review of Intraperitoneal Injection of Sodium Pentobarbital as a Method of Euthanasia in Laboratory Rodents. JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE : JAALAS 2020; 59:343. [PMID: 32156325 PMCID: PMC7210732 DOI: 10.30802/aalas-jaalas-19-000081] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/17/2019] [Accepted: 09/23/2019] [Indexed: 12/26/2022]
Abstract
Euthanasia is one of the most commonly performed procedures in biomedical research, involving tens of millions of animals in North America and Europe every year. The use of sodium pentobarbital, injected intraperitoneally, for killing rodents is described as an acceptable technique by the AVMA and CCAC euthanasia guidelines. This drug and route are recommended over inhalant anesthetics, carbon dioxide, and physical methods for ethical and aesthetic reasons as well as efficiency. However, a growing body of evidence challenges the efficacy and utility of intraperitoneal pentobarbital. This methodology has been described as inconsistent and may induce pain and stress. With these considerations in mind, a review of the literature is needed to assess the evidence surrounding this killing method, the associated welfare implications, and potential for refinement.
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Affiliation(s)
- Colin A Laferriere
- Clinical Sciences, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, Québec, Canada, and
| | - Daniel SJ Pang
- Clinical Sciences, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, Québec, Canada, and
- Veterinary Clinical and Diagnostic Sciences, University of Calgary, Calgary, Alberta, Canada
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27
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Laferriere CA, Leung VS, Pang DS. Evaluating Intrahepatic and Intraperitoneal Sodium Pentobarbital or Ethanol for Mouse Euthanasia. JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE 2020; 59:264-268. [PMID: 32220260 DOI: 10.30802/aalas-jaalas-19-000097] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Intraperitoneal (IP) injection of sodium pentobarbital (PB) is an accepted method of euthanasia for mice. However, this method has important drawbacks, including the potential for pain or misinjection. The objective of this prospective, randomized, blinded study was to determine whether intrahepatic (IH) injection of PB is more effective than IP delivery for mouse euthanasia. Secondary objectives were to: 1) determine whether IP ethanol (ET) is a suitable alternative to PB and 2) study the effect of isoflurane anesthesia on euthanasia with either PB or ET. Eighty adult CD1 mice were randomly assigned to 6 different treatment groups, were euthanized by using IP or IH injections of either PB or ET, and were either anesthetized or conscious before injection. Variables of interest were: 1) misinjection rates (based on necropsy evaluation), 2) time from injection to apnea and 3) time to cessation of heartbeat (CHB). The misinjection rate for IH injections was 93% (28/30). Two successful IH injections resulted in death within 4 s, but this method cannot be recommended due to the possibility for intrathoracic injection ( n = 4). In nonanesthetized mice, time to apnea and CHB was significantly shorter with IP ET (apnea: 72.5 s [median], CHB: 115 s) than with IP PB (apnea: 136 s, CHB: 176 s). Anesthesia at time of injection was associated with a shorter CHB time for IP PB. These data show the difficulty in achieving successful IH injections in mice, but confirm that IP ET is a viable and potentially superior alternative to IP PB. Lastly, anesthesia can shorten time to death after IP injection of PB.
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Affiliation(s)
- Colin A Laferriere
- Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, SaintHyacinthe, Québec, Canada
| | - Vivian Sy Leung
- Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, SaintHyacinthe, Québec, Canada
| | - Daniel Sj Pang
- Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, SaintHyacinthe, Québec, Canada; Veterinary Clinical and Diagnostic Sciences, University of Calgary Faculty of Veterinary Medicine, Alberta, Canada;,
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