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Qiu J, Xu J, Cai Y, Li M, Peng Y, Xu Y, Chen G. Catgut embedding in acupoints combined with repetitive transcranial magnetic stimulation for the treatment of postmenopausal osteoporosis: study protocol for a randomized clinical trial. Front Neurol 2024; 15:1295429. [PMID: 38606276 PMCID: PMC11008468 DOI: 10.3389/fneur.2024.1295429] [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: 09/16/2023] [Accepted: 03/11/2024] [Indexed: 04/13/2024] Open
Abstract
Background To date, the clinical modulation for bone metabolism based on the neuro-bone mass regulation theory is still not popular. The stimulation of nerve systems to explore novel treatments for Postmenopausal osteoporosis (PMOP) is urgent and significant. Preliminary research results suggested that changes brain function and structure may play a crucial role in bone metabolism with PMOP. Thus, we set up a clinical trial to investigate the effect of the combination of repetitive transcranial magnetic stimulation (rTMS) and catgut embedding in acupoints (CEA) for PMOP and to elucidate the central mechanism of this neural stimulation in regulating bone metabolism. Method This trial is a prospective and randomized controlled trial. 96 PMOP participants will be randomized in a 1:1:1 ratio into a CEA group, an rTMS group, or a combined one. Participants will receive CEA, rTMS, or combined therapy for 3 months with 8 weeks of follow-up. The primary outcomes will be the changes in Bone Mineral Density scores, total efficiency of Chinese Medicine Symptoms before and after treatment. Secondary outcomes include the McGill Pain Questionnaire Short-Form, Osteoporosis Symptom Score, Mini-Mental State Examination, and Beck Depression Inventory-II. The leptin, leptin receptor, and norepinephrine levels of peripheral blood must be measured before and after treatment. Adverse events that occur during the trial will be recorded. Discussion CEA achieves brain-bone mass regulation through the bottom-up way of peripheral-central while rTMS achieves it through the top-down stimulation of central-peripheral. CEA combined with rTMS can stimulate the peripheral-central at the same time and promote peripheral bone mass formation. The combination of CEA and rTMS may play a coordinating, synergistic, and side-effect-reducing role, which is of great clinical significance in exploring better treatment options for PMOP.Clinical trial registration: https://www.chictr.org.cn/, identifier ChiCTR2300073863.
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Affiliation(s)
- Jingjing Qiu
- Shenzhen Bao'an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - JiaZi Xu
- Clinical Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yingyue Cai
- Clinical Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Minghong Li
- Clinical Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yingsin Peng
- Shenzhen Bao'an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Yunxiang Xu
- Clinical Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guizhen Chen
- Shenzhen Bao'an Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
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Kao FC, Yen CM, Lin MC, Liao HY, Hsu HC, Lin YW. Acupoint catgut embedding attenuates fibromyalgia pain through attenuation of TRPV1 signaling pathway in mouse. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2024; 27:66-73. [PMID: 38164490 PMCID: PMC10722483 DOI: 10.22038/ijbms.2023.71431.15534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/23/2023] [Indexed: 01/03/2024]
Abstract
Objectives Chronic pain is considered as pain lasting for more than three months and has emerged as a global health problem affecting individuals and society. Chronic extensive pain is the main syndrome upsetting individuals with fibromyalgia (FM), accompanied by anxiety, obesity, sleep disturbances, and depression, Transient receptor potential vanilloid 1 (TRPV1) has been reported to transduce inflammatory and pain signals to the brain. Materials and Methods Acupoint catgut embedding (ACE) is a novel acupuncture technique that provides continuous effects and convenience. ACE was performed at the bilateral ST36 acupoint. Results We demonstrated similar pain levels among all groups at baseline. After cold stress, chronic mechanical or thermal nociception was induced (D14: mechanical: 1.85 ± 0.13 g; thermal: 4.85 ± 0.26 s) and reversed in ACE-treated mice (D14: mechanical: 3.99 ± 0.16 g; thermal: 7.42 ± 0.45 s) as well as Trpv1-/- group (Day 14, mechanical: 4.25 ± 0.2 g; thermal: 7.91 ± 0.21 s) mice. Inflammatory mediators were augmented in FM individuals and were abridged after ACE management and TRPV1 gene loss. TRPV1 and its linked mediators were increased in the thalamus (THA), somatosensory cortex (SSC), medial prefrontal cortex (mPFC), and anterior cingulate cortex (ACC) in FM mice. The up-regulation of these mediators was diminished in ACE and Trpv1-/- groups. Conclusion We suggest that chronic pain can be modulated by ACE or Trpv1-/-. ACE-induced analgesia via TRPV1 signaling pathways may be beneficial targets for FM treatment.
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Affiliation(s)
- Feng-Chen Kao
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
- Department of Orthopedics, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
- Department of Orthopedics, E-Da Dachang Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Chia-Ming Yen
- Department of Anesthesiology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 42743, Taiwan
- School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien 97004, Taiwan
| | - Ming-Chia Lin
- Department of Nuclear Medicine, E-DA Hospital, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - Hsien-Yin Liao
- College of Chinese Medicine, School of Post-Baccalaureate Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Hsin-Cheng Hsu
- College of Chinese Medicine, School of Post-Baccalaureate Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Yi-Wen Lin
- College of Chinese Medicine, Graduate Institute of Acupuncture Science, China Medical University, Taichung 404332, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung 40402, Taiwan
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ZHAO H, JUN P, LEE C, HAN CH. Acupoint catgut embedding for simple obesity in animal studies: a systematic review and Meta-analysis. J TRADIT CHIN MED 2023; 43:860-867. [PMID: 37679973 PMCID: PMC10465837 DOI: 10.19852/j.cnki.jtcm.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/27/2022] [Indexed: 09/09/2023]
Abstract
OBJECTIVE To assess the efficacy of acupoint catgut embedding (ACE) for simple obesity in preclinical animal experiments. METHODS We searched the following 14 electronic databases: PubMed, Cochrane Library, EMBASE, Oriental Medicine Advanced Searching Integrated System, KoreaMed, Korean Studies Information Service System, Science-on, Research Information Sharing Service, Korea Citation Index, Korea Traditional Knowledge Portal, China Network Knowledge Infrastructure Database, Wanfang Database, Chinese Science and Technology Journal Database, and Chinese Biology Medicine Database, from inception to November 2021 without language limitation. The assessment was performed according to the guidelines of Animal Research: Reporting of experiments; and Meta-analysis was performed using Reviewer Manager 5.4.1 software. RESULTS Twenty-four studies involving 813 animals were selected. Meta-analysis showed that ACE was beneficial for weight control [ 40, = -50.63, 95% (-57.59, -43.67), 0.000 01, = 0%] and reduced the Lee index [ 40, = -18.79, 95% (-20.01, -17.57), 0.000 01, = 0%]. However, when efficacy of ACE was compared with that of manual acupuncture, electroacupuncture, or oilistat therapy, statistical difference was not observed between the two groups. CONCLUSIONS This systematic review suggests that ACE may be efficacious in treating obesity. Moreover, the analyses highlighted the necessity to perform well-designed, higher-quality experiments.
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Affiliation(s)
- HuiYan ZHAO
- 1 Korean Convergence Medical Science, University of Science and Technology (UST), School of Korea Institute of Oriental Medicine
- 2 Daejeon 34054, Republic of Korea; KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Purumea JUN
- 3 KM Data Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Chaewon LEE
- 4 St. Johnsbury Academy Jeju, 304, Global edu-ro, Daejeong-eup, Seogwipo-si 63644, Republic of Korea
| | - Chang-Hyun HAN
- 5 Korean Convergence Medical Science, University of Science and Technology (UST), School of Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
- 6 KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
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Zheng H, Wang G, Liu M, Cheng H. Traditional Chinese medicine inhibits PD-1/PD-L1 axis to sensitize cancer immunotherapy: a literature review. Front Oncol 2023; 13:1168226. [PMID: 37397393 PMCID: PMC10312112 DOI: 10.3389/fonc.2023.1168226] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 06/01/2023] [Indexed: 07/04/2023] Open
Abstract
The Programmed death-1 (PD-1) and its programmed death-ligand 1 (PD-L1) comprise the PD-1/PD-L1 axis and maintain tumor immune evasion. Cancer immunotherapy based on anti-PD-1/PD-L1 antibodies is the most promising anti-tumor treatment available but is currently facing the thorny problem of unsatisfactory outcomes. Traditional Chinese Medicine (TCM), with its rich heritage of Chinese medicine monomers, herbal formulas, and physical therapies like acupuncture, moxibustion, and catgut implantation, is a multi-component and multi-target system of medicine known for enhancing immunity and preventing the spread of disease. TCM is often used as an adjuvant therapy for cancer in clinical practices, and recent studies have demonstrated the synergistic effects of combining TCM with cancer immunotherapy. In this review, we examined the PD-1/PD-L1 axis and its role in tumor immune escape while exploring how TCM therapies can modulate the PD-1/PD-L1 axis to improve the efficacy of cancer immunotherapy. Our findings suggest that TCM therapy can enhance cancer immunotherapy by reducing the expression of PD-1 and PD-L1, regulating T-cell function, improving the tumor immune microenvironment, and regulating intestinal flora. We hope this review may serve as a valuable resource for future studies on the sensitization of immune checkpoint inhibitors (ICIs) therapy.
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Affiliation(s)
- Huilan Zheng
- Department of Dermatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Gang Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, China
| | - Ming Liu
- Department of Medical Oncology/Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hongbin Cheng
- Department of Dermatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
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Liao HY, Lin MC, Lin YW. Acupuncture points injection mitigates chronic pain through transient receptor potential V1 in mice. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2022; 25:451-459. [PMID: 35656078 PMCID: PMC9150811 DOI: 10.22038/ijbms.2022.60121.13327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 08/13/2022] [Indexed: 11/22/2022]
Abstract
OBJECTIVES Tissue injury in peripheral sites can result in long-term potentiation in nociceptive neurons and surrounding glial cells, potentially resulting in the development of chronic inflammatory pain (CIP). Acupoint injection (AI) is similar to Western phototherapy, which injects solutions at specific sites to mitigate chronic pain. AI has shown greater benefits compared with acupuncture. In this study, we examined the therapeutic effect and explored the underlying mechanisms of AI in mice CIP model. MATERIALS AND METHODS We injected thrice complete Freund's adjuvant (CFA) into the mouse's hind paw to induce CIP. RESULTS We found that, after two weeks, CFA injection significantly induced mechanical and thermal hyperalgesia which were attenuated by AI treatment. Transient receptor potential V1 (TRPV1) channels and associated molecules were all increased in CIP in mice dorsal root ganglion (DRG), spinal cord (SC), thalamus, and somatosensory cortex (SSC). The aforementioned molecules were mitigated in AI and Trpv1 knockout mice. Furthermore, Iba1-positive cells (microglial marker) were also potentiated and shared a similar tendency with TRPV1. CONCLUSION These findings suggest that AI can alleviate chronic pain by reducing TRPV1 overexpression in both neuronal and microglial cells. Our results suggest new potential therapeutic targets for AI in chronic pain.
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Affiliation(s)
- Hsien-Yin Liao
- College of Chinese Medicine, School of Post-Baccalaureate Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Ming-Chia Lin
- Department of Nuclear Medicine, E-DA Hospital, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - Yi-Wen Lin
- College of Chinese Medicine, Graduate Institute of Acupuncture Science, China Medical University, Taichung 40402, Taiwan,Chinese Medicine Research Center, China Medical University, Taichung 40402, Taiwan,Corresponding author: Yi-Wen Lin. Graduate Institute of Acupuncture Science, College of Chinese Medicine, China Medical University, No. 91, Hsueh-Shih Road, North District, Taichung 404, Taiwan. Tel: 886-970055508;
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Obesity Animal Models for Acupuncture and Related Therapy Research Studies. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6663397. [PMID: 34630614 PMCID: PMC8497105 DOI: 10.1155/2021/6663397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 09/02/2021] [Indexed: 11/17/2022]
Abstract
Obesity and related diseases are considered as pandemic representing a worldwide threat for health. Animal models are critical to validate the effects and understand the mechanisms related to classical or innovative preventive and therapeutic strategies. It is, therefore, important to identify the best animal models for translational research, using different evaluation criteria such as the face, construct, and predictive validity. Because the pharmacological treatments and surgical interventions currently used for treating obesity often present many undesirable side effects, relatively high relapse probabilities, acupuncture, electroacupuncture (EA), and related therapies have gained more popularity and attention. Many kinds of experimental animal models have been used for obesity research studies, but in the context of acupuncture, most of the studies were performed in rodent obesity models. Though, are these obesity rodent models really the best for acupuncture or related therapies research studies? In this study, we review different obesity animal models that have been used over the past 10 years for acupuncture and EA research studies. We present their respective advantages, disadvantages, and specific constraints. With the development of research on acupuncture and EA and the increasing interest regarding these approaches, proper animal models are critical for preclinical studies aiming at developing future clinical trials in the human. The aim of the present study is to provide researchers with information and guidance related to the preclinical models that are currently available to investigate the outcomes of acupuncture and related therapies.
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Press AT, Babic P, Hoffmann B, Müller T, Foo W, Hauswald W, Benecke J, Beretta M, Cseresnyés Z, Hoeppener S, Nischang I, Coldewey SM, Gräler MH, Bauer R, Gonnert F, Gaßler N, Wetzker R, Figge MT, Schubert US, Bauer M. Targeted delivery of a phosphoinositide 3-kinase γ inhibitor to restore organ function in sepsis. EMBO Mol Med 2021; 13:e14436. [PMID: 34472699 PMCID: PMC8495460 DOI: 10.15252/emmm.202114436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 11/09/2022] Open
Abstract
Jaundice, the clinical hallmark of infection-associated liver dysfunction, reflects altered membrane organization of the canalicular pole of hepatocytes and portends poor outcomes. Mice lacking phosphoinositide 3-kinase-γ (PI3Kγ) are protected against membrane disintegration and hepatic excretory dysfunction. However, they exhibit a severe immune defect that hinders neutrophil recruitment to sites of infection. To exploit the therapeutic potential of PI3Kγ inhibition in sepsis, a targeted approach to deliver drugs to hepatic parenchymal cells without compromising other cells, in particular immune cells, seems warranted. Here, we demonstrate that nanocarriers functionalized through DY-635, a fluorescent polymethine dye, and a ligand of organic anion transporters can selectively deliver therapeutics to hepatic parenchymal cells. Applying this strategy to a murine model of sepsis, we observed the PI3Kγ-dependent restoration of biliary canalicular architecture, maintained excretory liver function, and improved survival without impairing host defense mechanisms. This strategy carries the potential to expand targeted nanomedicines to disease entities with systemic inflammation and concomitantly impaired barrier functionality.
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Affiliation(s)
- Adrian T Press
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Medical FacultyFriedrich Schiller University JenaJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Petra Babic
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Bianca Hoffmann
- Research Group Applied Systems BiologyLeibniz Institute for Natural Product Research and Infection Biology ‐ Hans Knoell InstituteJenaGermany
| | - Tina Müller
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Wanling Foo
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
| | | | - Jovana Benecke
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Martina Beretta
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Zoltán Cseresnyés
- Research Group Applied Systems BiologyLeibniz Institute for Natural Product Research and Infection Biology ‐ Hans Knoell InstituteJenaGermany
| | - Stephanie Hoeppener
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaJenaGermany
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaJenaGermany
| | - Ivo Nischang
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaJenaGermany
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaJenaGermany
| | - Sina M Coldewey
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
- Septomics Research CentreJena University HospitalJenaGermany
| | - Markus H Gräler
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Reinhard Bauer
- Institute of Molecular Cell BiologyJena University HospitalJenaGermany
| | - Falk Gonnert
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Nikolaus Gaßler
- Section of PathologyInstitute of Forensic MedicineJena University HospitalJenaGermany
| | - Reinhard Wetzker
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
| | - Marc Thilo Figge
- Center for Sepsis Control and CareJena University HospitalJenaGermany
- Research Group Applied Systems BiologyLeibniz Institute for Natural Product Research and Infection Biology ‐ Hans Knoell InstituteJenaGermany
- Institute of MicrobiologyFaculty of Biological SciencesFriedrich Schiller UniversityJenaGermany
| | - Ulrich S Schubert
- Center for Sepsis Control and CareJena University HospitalJenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaJenaGermany
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University JenaJenaGermany
| | - Michael Bauer
- Department of Anesthesiology and Intensive Care MedicineJena University HospitalJenaGermany
- Center for Sepsis Control and CareJena University HospitalJenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaJenaGermany
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TRPV1 Responses in the Cerebellum Lobules VI, VII, VIII Using Electroacupuncture Treatment for Chronic Pain and Depression Comorbidity in a Murine Model. Int J Mol Sci 2021; 22:ijms22095028. [PMID: 34068557 PMCID: PMC8126051 DOI: 10.3390/ijms22095028] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/06/2021] [Accepted: 05/06/2021] [Indexed: 12/22/2022] Open
Abstract
Depression is a prominent complex psychiatric disorder, usually complicated through expression of comorbid conditions, with chronic pain being among the most prevalent. This comorbidity is consistently associated with a poor prognosis and has been shown to negatively impact patient outcomes. With a global rise in this condition presenting itself, the importance of discovering long-term, effective, and affordable treatments is crucial. Electroacupuncture has demonstrated renowned success in its use for the treatment of pain and is a widely recognized therapy in clinical practice for the treatment of various psychosomatic disorders, most notably depression. Our study aimed to investigate the effects and mechanisms of Acid-Saline (AS) inducing states of chronic pain and depression comorbidity in the cerebellum, using the ST36 acupoint as the therapeutic intervention. Furthermore, the role of TRPV1 was relatedly explored through the use of TRPV1−/− mice (KO). The results indicated significant differences in the four behavioral tests used to characterize pain and depression states in mice. The AS and AS + SHAM group showed significant differences when compared to the Control and AS + EA groups in the von Frey and Hargreaves’s tests, as well as the Open-Field and Forced Swimming tests. This evidence was further substantiated in the protein levels observed in immunoblotting, with significant differences between the AS and AS + SHAM groups when compared to the AS + EA and AS + KO groups being identified. In addition, immunofluorescence visibly served to corroborate the quantitative outcomes. Conclusively these findings suggest that AS-induced chronic pain and depression comorbidity elicits changes in the cerebellum lobules VI, VII, VIII, which are ameliorated through the use of EA at ST36 via its action on TRPV1 and related molecular pathways. The action of TRPV1 is not singular in CPDC, which would suggest other potential targets such as acid-sensing ion channel subtype 3 (ASIC3) or voltage-gated sodium channels (Navs) that could be explored in future studies.
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Lafoux A, Lotteau S, Huchet C, Ducreux S. The Contractile Phenotype of Skeletal Muscle in TRPV1 Knockout Mice is Gender-Specific and Exercise-Dependent. Life (Basel) 2020; 10:E233. [PMID: 33036239 PMCID: PMC7600525 DOI: 10.3390/life10100233] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 09/24/2020] [Accepted: 10/03/2020] [Indexed: 12/31/2022] Open
Abstract
The transient receptor potential vanilloid 1 (TRPV1) belongs to the transient receptor potential superfamily of sensory receptors. TRPV1 is a non-selective cation channel permeable to Ca2+ that is capable of detecting noxious heat temperature and acidosis. In skeletal muscles, TRPV1 operates as a reticular Ca2+-leak channel and several TRPV1 mutations have been associated with two muscle disorders: malignant hyperthermia (MH) and exertional heat stroke (EHS). Although TRPV1-/- mice have been available since the 2000s, TRPV1's role in muscle physiology has not been thoroughly studied. Therefore, the focus of this work was to characterize the contractile phenotype of skeletal muscles of TRPV1-deficient mice at rest and after four weeks of exercise. As MS and EHS have a higher incidence in men than in women, we also investigated sex-related phenotype differences. Our results indicated that, without exercise, TRPV1-/- mice improved in vivo muscle strength with an impairment of skeletal muscle in vitro twitch features, i.e., delayed contraction and relaxation. Additionally, exercise appeared detrimental to TRPV1-/- slow-twitch muscles, especially in female animals.
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Affiliation(s)
- Aude Lafoux
- Therassay Platform, CAPACITES, Université de Nantes, 44200 Nantes, France;
| | - Sabine Lotteau
- CarMeN Laboratory, University of Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France;
| | - Corinne Huchet
- Nantes Gene Therapy Laboratory, INSERM UMR 1089, Université de Nantes, 44200 Nantes, France;
| | - Sylvie Ducreux
- CarMeN Laboratory, University of Lyon, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500 Bron, France;
- Département de Cardiologie, Hospices Civils de Lyon, Groupement Hospitalier EST, IHU-OPERA Bâtiment B13, 69500 Bron, France
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