1
|
Yin Y, Zhao P, Xu X, Zhou B, Chen J, Jiang X, Liu Y, Wu Y, Yue W, Xu H, Bu W. Piezoelectric Analgesia Blocks Cancer-Induced Bone Pain. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403979. [PMID: 39044708 DOI: 10.1002/adma.202403979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/23/2024] [Indexed: 07/25/2024]
Abstract
The manipulation of cell surface receptors' activity will open a new frontier for drug development and disease treatment. However, limited by the desensitization of drugs, effective physical intervention strategy remains challenging. Here, the controllable internalization of transient receptor potential vanilloid 1 (TRPV1) on neural cells by local piezoelectric field is reported. Single-cell-level local electric field is construct by synthesizing piezoelectric BiOIO3 nanosheets (BIONSs). Upon a mild ultrasound of 0.08 W cm-2, an electric field of 15.29 µV is generated on the surface of BIONSs, further inducing TRPV1 internalization in 5 min. The as-downregulated TRPV1 expression results in the reduction of Ca2+ signal in a spinal neuron and the inhibition of the activity of wide range dynamic neurons, therefore effectively preventing the transmission of cancer-induced bone pain (CIBP). This strategy not only charts a new course for CIBP alleviation, but also introduces a promising nanotechnology for regulating cell surface receptors, showing significant potential in neuropathological and receptor-related diseases.
Collapse
Affiliation(s)
- Yifei Yin
- Department of Ultrasound, Zhongshan Hospital, Institute of Ultrasound in Medicine and Engineering, Fudan University, Shanghai, 200032, China
- Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, Shanghai, 200072, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Peiran Zhao
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Xianyun Xu
- Department of Clinical Laboratory, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330006, China
| | - Bangguo Zhou
- Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, Shanghai, 200072, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Jian Chen
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Xingwu Jiang
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Yanyan Liu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Yelin Wu
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Wenwen Yue
- Shanghai Engineering Research Center of Ultrasound Diagnosis and Treatment, Shanghai, 200072, China
- National Clinical Research Center for Interventional Medicine, Shanghai, 200072, China
- Center of Minimally Invasive Treatment for Tumor, Department of Medical Ultrasound, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Huixiong Xu
- Department of Ultrasound, Zhongshan Hospital, Institute of Ultrasound in Medicine and Engineering, Fudan University, Shanghai, 200032, China
| | - Wenbo Bu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| |
Collapse
|
2
|
Puthumana EA, Muhamad L, Young LA, Chu XP. TRPA1, TRPV1, and Caffeine: Pain and Analgesia. Int J Mol Sci 2024; 25:7903. [PMID: 39063144 PMCID: PMC11276833 DOI: 10.3390/ijms25147903] [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: 05/20/2024] [Revised: 06/27/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024] Open
Abstract
Caffeine (1,3,7-trimethylxanthine) is a naturally occurring methylxanthine that acts as a potent central nervous system stimulant found in more than 60 different plants and fruits. Although caffeinated beverages are widely and casually consumed, the application of caffeine beyond dietary levels as pharmacologic therapy has been recognized since the beginning of its recorded use. The analgesic and vasoactive properties of caffeine are well known, but the extent of their molecular basis remains an area of active research. There is existing evidence in the literature as to caffeine's effect on TRP channels, the role of caffeine in pain management and analgesia, as well as the role of TRP in pain and analgesia; however, there has yet to be a review focused on the interaction between caffeine and TRP channels. Although the influence of caffeine on TRP has been demonstrated in the lab and in animal models, there is a scarcity of data collected on a large scale as to the clinical utility of caffeine as a regulator of TRP. This review aims to prompt further molecular research to elucidate the specific ligand-host interaction between caffeine and TRP by validating caffeine as a regulator of transient receptor potential (TRP) channels-focusing on the transient receptor potential vanilloid 1 (TRPV1) receptor and transient receptor potential ankyrin 1 (TRPA1) receptor subtypes-and its application in areas of pain.
Collapse
Affiliation(s)
| | | | | | - Xiang-Ping Chu
- Departments of Biomedical Sciences, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA; (E.A.P.); (L.M.); (L.A.Y.)
| |
Collapse
|
3
|
Laorob T, Ngoenkam J, Nuiyen A, Thitiwuthikiat P, Pejchang D, Thongsuk W, Wichai U, Pongcharoen S, Paensuwan P. Comparative effectiveness of nitro dihydrocapsaicin, new synthetic derivative capsaicinoid, and capsaicin in alleviating oxidative stress and inflammation on lipopolysaccharide-stimulated corneal epithelial cells. Exp Eye Res 2024; 244:109950. [PMID: 38815789 DOI: 10.1016/j.exer.2024.109950] [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: 09/20/2023] [Revised: 05/03/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
Loss of tear homeostasis, characterized by hyperosmolarity of the ocular surface, induces cell damage through inflammation and oxidation. Transient receptor potential vanilloid 1 (TRPV1), a sensor for osmotic changes, plays a crucial role as a calcium ion channel in the pathogenesis of hypertonic-related eye diseases. Capsaicin (CAP), a potent phytochemical, alleviates inflammation during oxidative stress events by activating TRPV1. However, the pharmacological use of CAP for eye treatment is limited by its pungency. Nitro dihydrocapsaicin (NDHC) was synthesized with aromatic ring modification of CAP structure to overcome the pungent effect. We compared the molecular features of NDHC and CAP, along with their biological activities in human corneal epithelial (HCE) cells, focusing on antioxidant and anti-inflammatory activities. The results demonstrated that NDHC maintained cell viability, cell shape, and exhibited lower cytotoxicity compared to CAP-treated cells. Moreover, NDHC prevented oxidative stress and inflammation in HCE cells following lipopolysaccharide (LPS) administration. These findings underscore the beneficial effect of NDHC in alleviating ocular surface inflammation, suggesting that NDHC may serve as an alternative anti-inflammatory agent targeting TRPV1 for improving hyperosmotic stress-induced ocular surface damage.
Collapse
Affiliation(s)
- Thanet Laorob
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Jatuporn Ngoenkam
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Aussanee Nuiyen
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Piyanuch Thitiwuthikiat
- Department of Cardio-Thoracic Technology, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, 65000, Thailand
| | - Darawan Pejchang
- Department of Optometry, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
| | - Wanachat Thongsuk
- Department of Optometry, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand
| | - Uthai Wichai
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Sutatip Pongcharoen
- Division of Immunology, Department of Medicine, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Pussadee Paensuwan
- Department of Optometry, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand.
| |
Collapse
|
4
|
Huang T, Chen X, He J, Zheng P, Luo Y, Wu A, Yan H, Yu B, Chen D, Huang Z. Eugenol mimics exercise to promote skeletal muscle fiber remodeling and myokine IL-15 expression by activating TRPV1 channel. eLife 2024; 12:RP90724. [PMID: 38913071 PMCID: PMC11196110 DOI: 10.7554/elife.90724] [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] [Indexed: 06/25/2024] Open
Abstract
Metabolic disorders are highly prevalent in modern society. Exercise mimetics are defined as pharmacological compounds that can produce the beneficial effects of fitness. Recently, there has been increased interest in the role of eugenol and transient receptor potential vanilloid 1 (TRPV1) in improving metabolic health. The aim of this study was to investigate whether eugenol acts as an exercise mimetic by activating TRPV1. Here, we showed that eugenol improved endurance capacity, caused the conversion of fast-to-slow muscle fibers, and promoted white fat browning and lipolysis in mice. Mechanistically, eugenol promoted muscle fiber-type transformation by activating TRPV1-mediated CaN signaling pathway. Subsequently, we identified IL-15 as a myokine that is regulated by the CaN/nuclear factor of activated T cells cytoplasmic 1 (NFATc1) signaling pathway. Moreover, we found that TRPV1-mediated CaN/NFATc1 signaling, activated by eugenol, controlled IL-15 levels in C2C12 myotubes. Our results suggest that eugenol may act as an exercise mimetic to improve metabolic health via activating the TRPV1-mediated CaN signaling pathway.
Collapse
Affiliation(s)
- Tengteng Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Xiaoling Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Jun He
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Ping Zheng
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Yuheng Luo
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Aimin Wu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Hui Yan
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Bing Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Daiwen Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Zhiqing Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| |
Collapse
|
5
|
Escobar-Espinal DM, Vivanco-Estela AN, Barros N, Dos Santos Pereira M, Guimaraes FS, Del Bel E, Nascimento GC. Cannabidiol and it fluorinate analog PECS-101 reduces hyperalgesia and allodynia in trigeminal neuralgia via TRPV1 receptors. Prog Neuropsychopharmacol Biol Psychiatry 2024; 132:110996. [PMID: 38508408 DOI: 10.1016/j.pnpbp.2024.110996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 03/04/2024] [Accepted: 03/17/2024] [Indexed: 03/22/2024]
Abstract
Trigeminal neuralgia (TN) is an intense and debilitating orofacial pain. The gold standard treatment for TN is carbamazepine. This antiepileptic drug provides pain relief with limited efficacy and side effects. To study the antinociceptive potential of cannabidiol (CBD) and its fluorinated analog PECS-101 (former HUF-101), we induced unilateral chronic constriction injury of the infraorbital nerve (IoN-CCI) in male Wistar rats. Seven days of treatment with CBD (30 mg/kg), PECS-101 (3, 10, and 30 mg/kg), or carbamazepine (10 and 30 mg/kg) reduced allodynia and hyperalgesia responses. Unlike carbamazepine, CBD and PECS-101 did not impair motor activity. The relief of the hypersensitive reactions has been associated with transient receptor potential vanilloid type 1 (TRPV1) modulation in the trigeminal spinal nucleus. CBD (30 mg/kg) and PECS-101 (10 and 30 mg/kg) reversed the increased expression of TRPV1 induced by IoN-CCI in this nucleus. Using a pharmacological strategy, the combination of the selective TRPV1 antagonist (capsazepine-CPZ - 5 mg/kg) with sub-effective doses of CBD (3 and 10 mg/kg) is also able to reverse the IoN-CCI-induced allodynia and hyperalgesia responses. This effect was accompanied by reduced TRPV1 protein expression in the trigeminal spinal nucleus. Our results suggest that CBD and PECS-101 may benefit trigeminal neuralgia without motor coordination impairments. PECS-101 is more potent against the hypernociceptive and motor impairment induced by TN compared to CBD and carbamazepine. The antinociceptive effect of these cannabinoids is partially mediated by TRPV1 receptors in the caudal part of the trigeminal spinal nucleus, the first central station of orofacial pain processing.
Collapse
Affiliation(s)
- Daniela Maria Escobar-Espinal
- Department of Basic and Oral Biology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14040-904, Brazil
| | - Airam Nicole Vivanco-Estela
- Department of Basic and Oral Biology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14040-904, Brazil
| | - Núbia Barros
- Department of Neuroscience, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14049-900, Brazil
| | - Maurício Dos Santos Pereira
- Department of Basic and Oral Biology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14040-904, Brazil
| | - Francisco Silveira Guimaraes
- Department of Neuroscience, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14049-900, Brazil
| | - Elaine Del Bel
- Department of Basic and Oral Biology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14040-904, Brazil; Department of Pharmacology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14049-900, Brazil; Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14049-900, Brazil.
| | - Glauce C Nascimento
- Department of Basic and Oral Biology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP 14040-904, Brazil.
| |
Collapse
|
6
|
Bright HR, Singh A, Joel A, Georgy JT, John AO, Rajkumar P, Jiji H, Stehno-Bittel L, Samuel P, Chandy SJ. Randomized Placebo-Controlled Trial of Topical Capsaicin for Delayed Chemotherapy-Induced Nausea and Vomiting. JCO Glob Oncol 2024; 10:e2400130. [PMID: 38905580 DOI: 10.1200/go.24.00130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/15/2024] [Accepted: 05/03/2024] [Indexed: 06/23/2024] Open
Abstract
PURPOSE We examined the efficacy of topical capsaicin in reducing delayed chemotherapy-induced nausea and vomiting (CINV). METHODS Adults on highly emetogenic chemotherapy regimens applied 2 g of capsaicin ointment (0.075%) or matching placebo four times a day to the abdomen for 5 days in addition to standard antiemetic regimen in this blinded randomized controlled trial. Patients were monitored for nausea and vomiting in the immediate (day 1), delayed (days 2-5), and extended phases (days 2-15). Self-reported incidence and daily episodes of CINV were compared between the groups. Onset, severity, need for rescue antiemetics, cumulative vomiting episodes, and safety were also compared. RESULTS In total, 160 patients were enrolled. The final modified intention-to-treat population included 75 patients each in the capsaicin and placebo groups. Fewer patients experienced nausea (36.0% [n = 27] v 53.3% [n = 40]; P = .033) and vomiting (28.0% [n = 21] v 42.7% [n = 32]; P = .060) in the capsaicin arm during the delayed phase. During the extended phase, there was a significantly lower incidence of nausea (44% v 64.0%; P = .014) in the capsaicin arm. No difference in nausea (26.7% v 25.3%) or vomiting (22.7% v 18.7%) was evident in the immediate phase. The average daily episodes of nausea and vomiting were significantly fewer in the capsaicin arm during the delayed and extended phases. With capsaicin, no grade 3 nausea (9.3% v 0.0%; P = .007) was observed, and the time to first nausea and vomiting was significantly prolonged. There were no differences between the groups with respect to rescue antiemetics, unscheduled hospital visits, and adverse events. CONCLUSION Topical capsaicin reduced the incidence of nausea and the average number of vomiting episodes during delayed and extended phases without increasing adverse effects.
Collapse
Affiliation(s)
- Heber Rew Bright
- Department of Pharmacy, Christian Medical College, Vellore, India
| | - Ashish Singh
- Department of Medical Oncology, Christian Medical College, Vellore, India
| | - Anjana Joel
- Department of Medical Oncology, Christian Medical College, Vellore, India
| | - Josh Thomas Georgy
- Department of Medical Oncology, Christian Medical College, Vellore, India
| | - Ajoy Oommen John
- Department of Medical Oncology, Christian Medical College, Vellore, India
| | - Pradeep Rajkumar
- Department of Pharmacy, Christian Medical College, Vellore, India
| | - Hema Jiji
- Department of Pharmacy, Christian Medical College, Vellore, India
| | - Lisa Stehno-Bittel
- Likarda, Inc, Kansas City, MO
- University of Kansas Medical Center, Rehabilitation Science, Kansas City, KS
| | - Prasanna Samuel
- Department of Biostatistics, Christian Medical College, Vellore, India
| | - Sujith J Chandy
- Department of Pharmacology and Clinical Pharmacology, Christian Medical College, Vellore, India
| |
Collapse
|
7
|
Cheng XL, Ruan YL, Dai JY, Fan HZ, Ling JY, Chen J, Lu WG, Gao XJ, Cao P. 8-shogaol derived from dietary ginger alleviated acute and inflammatory pain by targeting TRPV1. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 128:155500. [PMID: 38484627 DOI: 10.1016/j.phymed.2024.155500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/24/2024] [Accepted: 02/26/2024] [Indexed: 05/01/2024]
Abstract
Ginger, a well-known spice plant, has been used widely in medicinal preparations for pain relief. However, little is known about its analgesic components and the underlying mechanism. Here, we ascertained, the efficacy of ginger ingredient 8-Shogaol (8S), on inflammatory pain and tolerance induced by morphine, and probed the role of TRPV1 in its analgesic action using genetic and electrophysiology approaches. Results showed that 8S effectively reduced nociceptive behaviors of mice elicited by chemical stimuli, noxious heat as well as inflammation, and antagonized morphine analgesic tolerance independent on opioid receptor function. Genetic deletion of TRPV1 significantly abolished 8S' analgesia action. Further calcium imaging and patch-clamp recording showed that 8S could specifically activate TRPV1 in TRPV1-expressing HEK293T cells and dorsal root ganglion (DRG) neurons. The increase of [Ca2+]i in DRG was primarily mediated through TRPV1. Mutational and computation studies revealed the key binding sites for the interactions between 8S and TRPV1 included Leu515, Leu670, Ile573, Phe587, Tyr511, and Phe591. Further studies showed that TRPV1 activation evoked by 8S resulted in channel desensitization both in vitro and in vivo, as may be attributed to TRPV1 degradation or TRPV1 withdrawal from the cell surface. Collectively, this work provides the first evidence for the attractive analgesia of 8S in inflammatory pain and morphine analgesic tolerance mediated by targeting pain-sensing TRPV1 channel. 8S from dietary ginger has potential as a candidate drug for the treatment of inflammatory pain.
Collapse
Affiliation(s)
- Xiao-Lan Cheng
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China; School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yong-Lan Ruan
- Department of Neurology, Changzhou Hospital Affiliated to Nanjing University of Chinese Medicine, Changzhou, 213003, China
| | - Jing-Ya Dai
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China; Wanbei Health Vocational College, Suzhou, Anhui, 234000, China
| | - Hai-Zhen Fan
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Jin-Ying Ling
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Jiao Chen
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Wu-Guang Lu
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Xue-Jiao Gao
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China.
| | - Peng Cao
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China; The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, 100 Minjiang Road, Quzhou, Zhejiang 324000, China.
| |
Collapse
|
8
|
Hanifa M, Suri M, Singh H, Gagnani R, Jaggi AS, Bali A. Dual Role of TRPV1 Channels in Cerebral Stroke: An Exploration from a Mechanistic and Therapeutic Perspective. Mol Neurobiol 2024:10.1007/s12035-024-04221-5. [PMID: 38760620 DOI: 10.1007/s12035-024-04221-5] [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: 11/23/2023] [Accepted: 05/05/2024] [Indexed: 05/19/2024]
Abstract
Transient receptor potential vanilloid subfamily member 1 (TRPV1) has been strongly implicated in the pathophysiology of cerebral stroke. However, the exact role and mechanism remain elusive. TPRV1 channels are exclusively present in the neurovascular system and involve many neuronal processes. Numerous experimental investigations have demonstrated that TRPV1 channel blockers or the lack of TRPV1 channels may prevent harmful inflammatory responses during ischemia-reperfusion injury, hence conferring neuroprotection. However, TRPV1 agonists such as capsaicin and some other non-specific TRPV1 activators may induce transient/slight degree of TRPV1 channel activation to confer neuroprotection through a variety of mechanisms, including hypothermia induction, improving vascular functions, inducing autophagy, preventing neuronal death, improving memory deficits, and inhibiting inflammation. Another factor in capsaicin-mediated neuroprotection could be the desensitization of TRPV1 channels. Based on the summarized evidence, it may be plausible to suggest that TPRV1 channels have a dual role in ischemia-reperfusion-induced cerebral injury, and thus, both agonists and antagonists may produce neuroprotection depending upon the dose and duration. The current review summarizes the dual function of TRPV1 in ischemia-reperfusion-induced cerebral injury models, explains its mechanism, and predicts the future.
Collapse
Affiliation(s)
- Mohd Hanifa
- Department of Pharmacology, Central University of Punjab, Bathinda, 151401, India
| | - Manisha Suri
- Department of Pharmacology, Central University of Punjab, Bathinda, 151401, India
| | - Harshita Singh
- Department of Pharmacology, Central University of Punjab, Bathinda, 151401, India
| | - Riya Gagnani
- Department of Pharmacology, Central University of Punjab, Bathinda, 151401, India
| | | | - Anjana Bali
- Department of Pharmacology, Central University of Punjab, Bathinda, 151401, India.
| |
Collapse
|
9
|
Chen CC, Ke CH, Wu CH, Lee HF, Chao Y, Tsai MC, Shyue SK, Chen SF. Transient receptor potential vanilloid 1 inhibition reduces brain damage by suppressing neuronal apoptosis after intracerebral hemorrhage. Brain Pathol 2024:e13244. [PMID: 38308041 DOI: 10.1111/bpa.13244] [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: 11/17/2023] [Accepted: 01/19/2024] [Indexed: 02/04/2024] Open
Abstract
Intracerebral hemorrhage (ICH) induces a complex sequence of apoptotic cascades and inflammatory responses, leading to neurological impairment. Transient receptor potential vanilloid 1 (TRPV1), a nonselective cation channel with high calcium permeability, has been implicated in neuronal apoptosis and inflammatory responses. This study used a mouse ICH model and neuronal cultures to examine whether TRPV1 activation exacerbates brain damage and neurological deficits by promoting neuronal apoptosis and neuroinflammation. ICH was induced by injecting collagenase in both wild-type (WT) C57BL/6 mice and TRPV1-/- mice. Capsaicin (CAP; a TRPV1 agonist) or capsazepine (a TRPV1 antagonist) was administered by intracerebroventricular injection 30 min before ICH induction in WT mice. The effects of genetic deletion or pharmacological inhibition of TRPV1 using CAP or capsazepine on motor deficits, histological damage, apoptotic responses, blood-brain barrier (BBB) permeability, and neuroinflammatory reactions were explored. The antiapoptotic mechanisms and calcium influx induced by TRPV1 inactivation were investigated in cultured hemin-stimulated neurons. TRPV1 expression was upregulated in the hemorrhagic brain, and TRPV1 was expressed in neurons, microglia, and astrocytes after ICH. Genetic deletion of TRPV1 significantly attenuated motor deficits and brain atrophy for up to 28 days. Deletion of TRPV1 also reduced brain damage, neurodegeneration, microglial activation, cytokine expression, and cell apoptosis at 1 day post-ICH. Similarly, the administration of CAP ameliorated brain damage, neurodegeneration, brain edema, BBB permeability, and cytokine expression at 1 day post-ICH. In primary neuronal cultures, pharmacological inactivation of TRPV1 by CAP attenuated neuronal vulnerability to hemin-induced injury, suppressed apoptosis, and preserved mitochondrial integrity in vitro. Mechanistically, CAP reduced hemin-stimulated calcium influx and prevented the phosphorylation of CaMKII in cultured neurons, which was associated with reduced activation of P38 and c-Jun NH2 -terminal kinase mitogen-activated protein kinase signaling. Our results suggest that TRPV1 inhibition may be a potential therapy for ICH by suppressing mitochondria-related neuronal apoptosis.
Collapse
Affiliation(s)
- Chien-Cheng Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
- Graduate Institute of Gerontology and Health Care Management, Chang Gung University of Science and Technology, Taoyuan, Taiwan, Republic of China
| | - Chia-Hua Ke
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
| | - Chun-Hu Wu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Hung-Fu Lee
- Department of Neurosurgery, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
- National Taipei University of Nursing and Health Sciences, Taipei, Taiwan, Republic of China
| | - Yuan Chao
- Department of Medical Education, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan, Republic of China
| | - Min-Chien Tsai
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Song-Kun Shyue
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China
| |
Collapse
|
10
|
Amaya-Rodriguez CA, Carvajal-Zamorano K, Bustos D, Alegría-Arcos M, Castillo K. A journey from molecule to physiology and in silico tools for drug discovery targeting the transient receptor potential vanilloid type 1 (TRPV1) channel. Front Pharmacol 2024; 14:1251061. [PMID: 38328578 PMCID: PMC10847257 DOI: 10.3389/fphar.2023.1251061] [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: 06/30/2023] [Accepted: 12/14/2023] [Indexed: 02/09/2024] Open
Abstract
The heat and capsaicin receptor TRPV1 channel is widely expressed in nerve terminals of dorsal root ganglia (DRGs) and trigeminal ganglia innervating the body and face, respectively, as well as in other tissues and organs including central nervous system. The TRPV1 channel is a versatile receptor that detects harmful heat, pain, and various internal and external ligands. Hence, it operates as a polymodal sensory channel. Many pathological conditions including neuroinflammation, cancer, psychiatric disorders, and pathological pain, are linked to the abnormal functioning of the TRPV1 in peripheral tissues. Intense biomedical research is underway to discover compounds that can modulate the channel and provide pain relief. The molecular mechanisms underlying temperature sensing remain largely unknown, although they are closely linked to pain transduction. Prolonged exposure to capsaicin generates analgesia, hence numerous capsaicin analogs have been developed to discover efficient analgesics for pain relief. The emergence of in silico tools offered significant techniques for molecular modeling and machine learning algorithms to indentify druggable sites in the channel and for repositioning of current drugs aimed at TRPV1. Here we recapitulate the physiological and pathophysiological functions of the TRPV1 channel, including structural models obtained through cryo-EM, pharmacological compounds tested on TRPV1, and the in silico tools for drug discovery and repositioning.
Collapse
Affiliation(s)
- Cesar A. Amaya-Rodriguez
- Centro Interdisciplinario de Neurociencia de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
- Departamento de Fisiología y Comportamiento Animal, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Ciudad de Panamá, Panamá
| | - Karina Carvajal-Zamorano
- Centro Interdisciplinario de Neurociencia de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Daniel Bustos
- Centro de Investigación de Estudios Avanzados del Maule (CIEAM), Vicerrectoría de Investigación y Postgrado Universidad Católica del Maule, Talca, Chile
- Laboratorio de Bioinformática y Química Computacional, Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca, Chile
| | - Melissa Alegría-Arcos
- Núcleo de Investigación en Data Science, Facultad de Ingeniería y Negocios, Universidad de las Américas, Santiago, Chile
| | - Karen Castillo
- Centro Interdisciplinario de Neurociencia de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
- Centro de Investigación de Estudios Avanzados del Maule (CIEAM), Vicerrectoría de Investigación y Postgrado Universidad Católica del Maule, Talca, Chile
| |
Collapse
|
11
|
Hanč P, Messou MA, Wang Y, von Andrian UH. Control of myeloid cell functions by nociceptors. Front Immunol 2023; 14:1127571. [PMID: 37006298 PMCID: PMC10064072 DOI: 10.3389/fimmu.2023.1127571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/23/2023] [Indexed: 03/19/2023] Open
Abstract
The immune system has evolved to protect the host from infectious agents, parasites, and tumor growth, and to ensure the maintenance of homeostasis. Similarly, the primary function of the somatosensory branch of the peripheral nervous system is to collect and interpret sensory information about the environment, allowing the organism to react to or avoid situations that could otherwise have deleterious effects. Consequently, a teleological argument can be made that it is of advantage for the two systems to cooperate and form an “integrated defense system” that benefits from the unique strengths of both subsystems. Indeed, nociceptors, sensory neurons that detect noxious stimuli and elicit the sensation of pain or itch, exhibit potent immunomodulatory capabilities. Depending on the context and the cellular identity of their communication partners, nociceptors can play both pro- or anti-inflammatory roles, promote tissue repair or aggravate inflammatory damage, improve resistance to pathogens or impair their clearance. In light of such variability, it is not surprising that the full extent of interactions between nociceptors and the immune system remains to be established. Nonetheless, the field of peripheral neuroimmunology is advancing at a rapid pace, and general rules that appear to govern the outcomes of such neuroimmune interactions are beginning to emerge. Thus, in this review, we summarize our current understanding of the interaction between nociceptors and, specifically, the myeloid cells of the innate immune system, while pointing out some of the outstanding questions and unresolved controversies in the field. We focus on such interactions within the densely innervated barrier tissues, which can serve as points of entry for infectious agents and, where known, highlight the molecular mechanisms underlying these interactions.
Collapse
Affiliation(s)
- Pavel Hanč
- Department of Immunology, Harvard Medical School, Boston, MA, United States
- The Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
- *Correspondence: Pavel Hanč, ; Ulrich H. von Andrian,
| | - Marie-Angèle Messou
- Department of Immunology, Harvard Medical School, Boston, MA, United States
- The Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Yidi Wang
- Department of Immunology, Harvard Medical School, Boston, MA, United States
- The Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Ulrich H. von Andrian
- Department of Immunology, Harvard Medical School, Boston, MA, United States
- The Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
- *Correspondence: Pavel Hanč, ; Ulrich H. von Andrian,
| |
Collapse
|
12
|
Andersen G, Kahlenberg K, Krautwurst D, Somoza V. [6]-Gingerol Facilitates CXCL8 Secretion and ROS Production in Primary Human Neutrophils by Targeting the TRPV1 Channel. Mol Nutr Food Res 2023; 67:e2200434. [PMID: 36564924 DOI: 10.1002/mnfr.202200434] [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: 07/01/2022] [Revised: 12/13/2022] [Indexed: 12/25/2022]
Abstract
SCOPE Clarifying the function of sensory active TRP (transient receptor potential) channels in non-sensory tissue is of growing interest, especially with regard to food ingredients in nutritionally relevant concentrations. The study hypothesizes the TRPV1 agonist [6]-gingerol to facilitate cellular immune responses of primary human neutrophils, after treatment with 50 nM, a concentration that can be reached in the circulation after habitual dietary intake. METHODS AND RESULTS qRT-PCR analyses reveal a high abundancy of TRP channel RNA expression in the types of primary leukocytes investigated, namely neutrophils, monocytes, NK cells, T cells, and B cells. Incubation of neutrophils with 50 nM of the known TRPV1 ligand [6]-gingerol led to increased surface expression of CD11b, CD66b, and the fMLF receptor FPR1, as shown by flow cytometry. Upon subsequent stimulation with fMLF, the neutrophils display an about 30% (p < 0.05) increase in CXCL8 secretion as well as in ROS production. Pharmacological inhibition of TRPV1 by trans-tert-butylcyclohexanol abolishes the [6]-gingerol induced effects. CONCLUSIONS The TRPV1 channel is functionally expressed in human neutrophils. Activation of the channel with [6]-gingerol as a food-derived ligand in nutritionally relevant concentrations leads to an enhanced responsiveness in the cells towards activating stimuli, thereby facilitating a canonical cellular immune response in human neutrophils.
Collapse
Affiliation(s)
- Gaby Andersen
- Leibniz Institute for Food Systems Biology at the Technical University of Munich, 85354, Freising, Germany
| | - Kristin Kahlenberg
- Leibniz Institute for Food Systems Biology at the Technical University of Munich, 85354, Freising, Germany
| | - Dietmar Krautwurst
- Leibniz Institute for Food Systems Biology at the Technical University of Munich, 85354, Freising, Germany
| | - Veronika Somoza
- Leibniz Institute for Food Systems Biology at the Technical University of Munich, 85354, Freising, Germany.,Chair of Nutritional Systems Biology at the Technical University of Munich, 85354, Freising, Germany.,Department of Nutritional and Physiological Chemistry, Faculty of Chemistry, University of Vienna, Vienna, 1090, Austria
| |
Collapse
|
13
|
Diamine Oxidase Activity Deficit and Idiopathic Rhinitis: A New Subgroup of Non-Allergic Rhinitis? Life (Basel) 2023; 13:life13010240. [PMID: 36676189 PMCID: PMC9865160 DOI: 10.3390/life13010240] [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: 11/02/2022] [Revised: 12/15/2022] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Idiopathic rhinitis represents more than 50% of non-allergic rhinitis, a heterogeneous group that involves the symptomatic inflammation of the nasal mucosa. The TRPV1 receptor of unmyelinated C-type neurons appears to be involved in its pathophysiology. Histamine, whose main catabolic enzyme is DAO, is one of the mediators that can activate this receptor. The failure of DAO causes an increase in the level of histamine in the body and, consequently, the activation of TRPV1. The objective was to investigate the existence of a DAO enzyme activity deficit in idiopathic rhinitis and its correlation with symptoms. A cross-sectional study was conducted in 116 idiopathic rhinitis patients, and DAO activity, nasal peak inspiratory flow, and rhinitis severity were recorded. The prevalence of a DAO activity deficit was 41.38% (95%CI 0.33−0.50; p = 0.05). The DAO activity in patients with mild rhinitis was 52.93 ± 8.72 HDU/mL, in those with moderate rhinitis it was 120.33 ± 71.63 HDU/mL, and in those with severe rhinitis it was 92.58 ± 27.75 HDU/mL (p = 0.006). The NPIF in patients with a DAO activity deficit was 107.92 ± 34.05 L/min, compared to 72.35 ± 27.16 L/min in patients with normal enzymatic activity (p < 0.001), demonstrating a linear correlation between activity levels and nasal obstruction (−0.45; p < 0.001). Therefore, patients with a DAO deficiency and idiopathic rhinitis could present a milder disease course, because the repeated and continuous activation of TRPV1 led to a partial or total decrease in their response (desensitization). This new theory represents a different perspective for the study of idiopathic rhinitis and its relationship with TRPV1, with the regulation or modulation of the desensitization of TRPV1 being an important therapeutic target for patients with idiopathic rhinitis in the future.
Collapse
|
14
|
Sex differences in estimates of cardiac autonomic function using heart rate variability: effects of dietary capsaicin. Eur J Appl Physiol 2023; 123:1041-1050. [PMID: 36633663 DOI: 10.1007/s00421-023-05136-0] [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: 09/12/2022] [Accepted: 01/07/2023] [Indexed: 01/13/2023]
Abstract
PURPOSE Heart rate variability (HRV) estimates the autonomic nervous system (ANS) influence on the heart and appears sex-specific. Sensory afferents exhibit sex-specificity; although, it is unknown if Capsaicin, an agonist for transient receptor potential vanilloid channel-1 (TRPV1), alters cardiac ANS activity in a sex-dependent manner, which could be important given the predictive nature of HRV on risk of developing hypertension. Thus, we explored if there was sex-specificity in the effect of capsaicin on estimated cardiac ANS activity. METHODS HRV was measured in 38 young males (M: n = 25) and females (F: n = 13), in a blinded-crossover design, after acute ingestion of placebo or capsaicin. Resting HR, RR-interval, root-mean-square of successive differences (RMSSD), natural log-transformed RMSSD (LnRMSSD), standard deviation of n-n intervals (SDNN), number of pairs of successive n-n intervals differing by > 50 ms (NN50), and percent NN50 (PNN50) were obtained using standard techniques. RESULTS Significant sex differences were observed in mean HR (M: 59 ± 9.3 vs. F: 65 ± 12 beats/min, p = 0.036, η2 = 0.098), minimum HR (M: 47 ± 8.3 vs. F: 56 ± 12 beats/min, p = 0.014, η2 = 0.124), and NN50 (M: 177 ± 143 vs. F: 29 ± 17, p < 0.001, η2 = 0.249). There was a significant interaction of sex*treatment (p = 0.02, η2 = 0.027) for RMSSD, where males increased (78 ± 55 vs. 91 ± 64 ms), and females decreased (105 ± 83 vs. 76 ± 43 ms), placebo vs. capsaicin. CONCLUSION This controlled study recapitulates sex differences in HR and HRV, but revealed a sexual dimorphism in the parasympathetic response to capsaicin, perhaps due to differing TRPV1-afferent sensitivity, highlighting a potential mechanism for differential regulation of hemodynamics, and CVD risk, and should be considered in future studies.
Collapse
|
15
|
Gao N, Li M, Wang W, Liu Z, Guo Y. A bibliometrics analysis and visualization study of TRPV1 channel. Front Pharmacol 2023; 14:1076921. [PMID: 37025492 PMCID: PMC10070874 DOI: 10.3389/fphar.2023.1076921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 02/28/2023] [Indexed: 04/08/2023] Open
Abstract
Background: At the end of the 1990s, transient receptor potential vanilloid 1 (TRPV1) was first identified and cloned, serving as a key pain and heat sensor in humans. A large body of evidence have revealed its polymodal structure, complex function and wide-spread distribution, the specific mechanism of the ion channel remains unclear. Our goal here is to perform a bibliometric analysis and visualization study to present hotspots and trends in TRPV1 channel. Materials and Methods: TRPV1-related publications from inception to 2022 were retrieved from the Web of Science database. Excel, VOSviewer, and CiteSpace software were utilized for co-authorship, co-citation and co-occurrence analysis. Results: There were 9,113 publications included in the study, the number of publications increased rapidly after 1989, from 7 in 1990 to 373 in 2007, during which the number of citations per publication (CPP) also reached a peak in 2000 (CPP = 106.52). A total of 1,486 journals published TRPV1 articles, mainly belong to Q1 or Q2 divisions; The United States published the most articles (TP = 3,080), followed by Japan (TP = 1,221), China (TP = 1,217), and England (TP = 734); In recent years, the TRPV1-related research direction has been broaden to multiple fields related to inflammation, oxidative stress, and apoptosis; Keyword clustering refined the topic distributions and could be generalized as neuralgia, endogenous cannabinoid system, TRPV1 mediated airway hyperresponsiveness, involvement of apoptosis, TRPV1 antagonists as therapy targets. Conclusion: By conducting an exhaustive bibliographic search, this review refined the topic distributions and generalized as neuralgia, endogenous cannabinoid system, TRPV1 mediated airway hyperresponsiveness, involvement of apoptosis, TRPV1 antagonists as therapy targets. It is currently being clarified how exactly TRPV1 works as an ion channel, and much more in-depth basic research is needed in the future.
Collapse
Affiliation(s)
- Ning Gao
- Department of Acupuncture and Moxibustion, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Meng Li
- Department of Gastroenterology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Weiming Wang
- Department of Acupuncture and Moxibustion, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhen Liu
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Zhen Liu, ; Yufeng Guo,
| | - Yufeng Guo
- Department of Acupuncture and Moxibustion, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Zhen Liu, ; Yufeng Guo,
| |
Collapse
|
16
|
Does sex influence near-infrared spectroscopy-derived indicators of microvascular reactivity and the response to acute dietary capsaicin. Microvasc Res 2023; 145:104436. [PMID: 36113667 DOI: 10.1016/j.mvr.2022.104436] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/28/2022] [Accepted: 09/10/2022] [Indexed: 02/03/2023]
Abstract
Endothelial dysfunction is associated with cardiovascular disease development, nitric oxide (NO) deficiencies, and may be limb or sex-specific. Prior in vitro work indicated that the transient receptor potential vanilloid channel-1 (TRPV1) is expressed in human arteries and the TRPV1 agonist capsaicin alters vasodilation in an endothelium-dependent manner; however, it is unknown if this translates in vivo or is limb or sex-dependent. Therefore, we sought to determine if there was limb or sex-specificity in the effect of capsaicin on microvascular function using near-infrared spectroscopy (NIRS)-derived tissue oxygen saturation (StO2) reperfusion slope. In a blinded placebo-controlled crossover design, 45 young males (M: n = 25) and females (F: n = 20), the reperfusion slopes of the forearm and quadriceps were assessed, and a urine sample obtained to assay for nitrate/nitrite (NOx) concentrations and antioxidant capacity after acutely ingesting placebo or capsaicin. Under placebo, females had greater reperfusion rates in both the forearm (M: 0.44 ± 0.24 vs. F: 0.98 ± 0.46 %/sec; p = 0.002, d = -1.50) and quadricep (M: 0.86 ± 0.31 vs. F: 1.17 ± 0.43 %/sec; p = 0.010, d = -0.85). Capsaicin decreased microvascular responsiveness in the forearm of females (placebo: 0.98 ± 0.45 vs. capsaicin: 0.84 ± 0.45 %/sec) as compared to males (placebo: 0.45 ± 0.24 vs. capsaicin: 0.38 ± 0.16 %/sec, interaction p < 0.001, η2 = 0.475). There was a sex*treatment interaction for NOx concentrations, where males increased (placebo: 21.13 ± 12.83 vs. capsaicin: 23.82 ± 13.34 μM), while females decreased (placebo: 22.78 ± 14.40 vs. capsaicin: 14.43 ± 10.01 μM; p = 0.037, η2 = 0.042). Using NIRS to assess microvascular function, there is apparent limb and sex-specificity, and, for the first-time, document that acute oral capsaicin alters reperfusion slope in a sexually divergent manner.
Collapse
|
17
|
Abdalla SS, Harb AA, Almasri IM, Bustanji YK. The interaction of TRPV1 and lipids: Insights into lipid metabolism. Front Physiol 2022; 13:1066023. [PMID: 36589466 PMCID: PMC9797668 DOI: 10.3389/fphys.2022.1066023] [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: 10/10/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1), a non-selective ligand-gated cation channel with high permeability for Ca2+, has received considerable attention as potential therapeutic target for the treatment of several disorders including pain, inflammation, and hyperlipidemia. In particular, TRPV1 regulates lipid metabolism by mechanisms that are not completely understood. Interestingly, TRPV1 and lipids regulate each other in a reciprocal and complex manner. This review surveyed the recent literature dealing with the role of TRPV1 in the hyperlipidemia-associated metabolic syndrome. Besides TRPV1 structure, molecular mechanisms underlying the regulatory effect of TRPV1 on lipid metabolism such as the involvement of uncoupling proteins (UCPs), ATP-binding cassette (ABC) transporters, peroxisome proliferation-activated receptors (PPAR), sterol responsive element binding protein (SREBP), and hypoxia have been discussed. Additionally, this review extends our understanding of the lipid-dependent modulation of TRPV1 activity through affecting both the gating and the expression of TRPV1. The regulatory role of different classes of lipids such as phosphatidylinositol (PI), cholesterol, estrogen, and oleoylethanolamide (OEA), on TRPV1 has also been addressed.
Collapse
Affiliation(s)
- Shtaywy S. Abdalla
- Department of Biological Sciences, School of Science, The University of Jordan, Amman, Jordan,*Correspondence: Shtaywy S. Abdalla,
| | - Amani A. Harb
- Department of Basic Sciences, Faculty of Arts and Sciences, Al-Ahliyya Amman University, Amman, Jordan
| | - Ihab M. Almasri
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Gaza, Palestine
| | - Yasser K. Bustanji
- Department of Biopharmaceuticals and Clinical Pharmacy, School of Pharmacy, The University of Jordan, Amman, Jordan
| |
Collapse
|
18
|
Thermoregulatory heat-escape/cold-seeking behavior in mice and the influence of TRPV1 channels. PLoS One 2022; 17:e0276748. [DOI: 10.1371/journal.pone.0276748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
The present study assessed heat-escape/cold-seeking behavior during thermoregulation in mice and the influence of TRPV1 channels. Mice received subcutaneous injection of capsaicin (50 mg/kg; CAP group) for desensitization of TRPV1 channels or vehicle (control [CON] group). In Experiment 1, heat-escape/cold-seeking behavior was assessed using a newly developed system comprising five temperature-controlled boards placed in a cross-shape. Each mouse completed three 90-min trials. In the trials, the four boards, including the center board, were set at either 36˚C, 38˚C, or 40˚C, while one corner board was set at 32˚C, which was rotated every 5 min. In Experiment 2, mice were exposed to an ambient temperature of 37˚C for 30 min. cFos expression in the preoptic area of the hypothalamus (POA) was assessed. In Experiment 1, the CON group stayed on the 32˚C board for the longest duration relative to that on other boards, and intra-abdominal temperature (Tabd) was maintained. In the CAP group, no preference for the 32˚C board was observed, and Tabd increased. In Experiment 2, cFos expression in the POA decreased in the CAP group. Capsaicin-induced desensitization of TRPV1 channels suppressed heat-escape/cold-seeking behavior in mice during heat exposure, resulting in hyperthermia. In conclusion, our findings suggest that heat sensation from the body surface may be a key inducer of thermoregulatory behaviors in mice.
Collapse
|
19
|
Stefanov BA, Mansouri M, Charpin-El Hamri G, Fussenegger M. Sunlight-Controllable Biopharmaceutical Production for Remote Emergency Supply of Directly Injectable Therapeutic Proteins. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202566. [PMID: 36084222 DOI: 10.1002/smll.202202566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Biopharmaceutical manufacturing requires specialized facilities and a long-range cold supply chain for the delivery of the therapeutics to patients. In order to produce biopharmaceuticals in locations lacking such infrastructure, a production process is designed that utilizes the trigger-inducible release of large quantities of a stored therapeutic protein from engineered endocrine cells within minutes to generate a directly injectable saline solution of the protein. To illustrate the versatility of this approach, it is shown that not only insulin, but also glucagon-like peptide 1 (GLP-1), nanoluciferase (NLuc), and the model biopharmaceutical erythropoietin (EPO) can be trigger-inducibly released, even when using biologically inactive insulin as a carrier. The facilitating beta cells are engineered with a controllable TRPV1-mediated Ca2+ influx that induces the fusion of cytoplasmic storage vesicles with the membrane, leading to the release of the stored protein. When required, the growth medium is exchanged for saline solution, and the system is stimulated with the small molecule capsaicin, with a hand-warming pack, or simply by using sunlight. Injection of insulin saline solution obtained in this way into a type-1 diabetes mouse model results in the regulation of blood glucose levels. It is believed that this system will be readily adaptable to deliver various biopharmaceutical proteins at remote locations.
Collapse
Affiliation(s)
- Bozhidar-Adrian Stefanov
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Maysam Mansouri
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Ghislaine Charpin-El Hamri
- Département Génie Biologique, Institut Universitaire de Technologie, Villeurbanne, Cedex F-69622, France
| | - Martin Fussenegger
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, Basel, 4058, Switzerland
- Faculty of Life Science, University of Basel, Basel, 4058, Switzerland
| |
Collapse
|
20
|
Fernández-Carvajal A, Fernández-Ballester G, Ferrer-Montiel A. TRPV1 in chronic pruritus and pain: Soft modulation as a therapeutic strategy. Front Mol Neurosci 2022; 15:930964. [PMID: 36117910 PMCID: PMC9478410 DOI: 10.3389/fnmol.2022.930964] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/09/2022] [Indexed: 11/17/2022] Open
Abstract
Chronic pain and pruritus are highly disabling pathologies that still lack appropriate therapeutic intervention. At cellular level the transduction and transmission of pain and pruritogenic signals are closely intertwined, negatively modulating each other. The molecular and cellular pathways involved are multifactorial and complex, including peripheral and central components. Peripherally, pain and itch are produced by subpopulations of specialized nociceptors that recognize and transduce algesic and pruritogenic signals. Although still under intense investigation, cumulative evidence is pointing to the thermosensory channel TRPV1 as a hub for a large number of pro-algesic and itchy agents. TRPV1 appears metabolically coupled to most neural receptors that recognize algesic and pruritic molecules. Thus, targeting TRPV1 function appears as a valuable and reasonable therapeutic strategy. In support of this tenet, capsaicin, a desensitizing TRPV1 agonist, has been shown to exhibit clinically relevant analgesic, anti-inflammatory, and anti-pruritic activities. However, potent TRPV1 antagonists have been questioned due to an hyperthermic secondary effect that prevented their clinical development. Thus, softer strategies directed to modulate peripheral TRPV1 function appear warranted to alleviate chronic pain and itch. In this regard, soft, deactivatable TRPV1 antagonists for topical or local application appear as an innovative approach for improving the distressing painful and itchy symptoms of patients suffering chronic pain or pruritus. Here, we review the data on these compounds and propose that this strategy could be used to target other peripheral therapeutic targets.
Collapse
|
21
|
Kazandzhieva K, Mammadova-Bach E, Dietrich A, Gudermann T, Braun A. TRP channel function in platelets and megakaryocytes: basic mechanisms and pathophysiological impact. Pharmacol Ther 2022; 237:108164. [PMID: 35247518 DOI: 10.1016/j.pharmthera.2022.108164] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/29/2022] [Accepted: 02/28/2022] [Indexed: 12/30/2022]
Abstract
Transient receptor potential (TRP) proteins form a superfamily of cation channels that are expressed in a wide range of tissues and cell types. During the last years, great progress has been made in understanding the molecular complexity and the functions of TRP channels in diverse cellular processes, including cell proliferation, migration, adhesion and activation. The diversity of functions depends on multiple regulatory mechanisms by which TRP channels regulate Ca2+ entry mechanisms and intracellular Ca2+ dynamics, either through membrane depolarization involving cation influx or store- and receptor-operated mechanisms. Abnormal function or expression of TRP channels results in vascular pathologies, including hypertension, ischemic stroke and inflammatory disorders through effects on vascular cells, including the components of blood vessels and platelets. Moreover, some TRP family members also regulate megakaryopoiesis and platelet production, indicating a complex role of TRP channels in pathophysiological conditions. In this review, we describe potential roles of TRP channels in megakaryocytes and platelets, as well as their contribution to diseases such as thrombocytopenia, thrombosis and stroke. We also critically discuss the potential of TRP channels as possible targets for disease prevention and treatment.
Collapse
Affiliation(s)
- Kalina Kazandzhieva
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Munich, Germany
| | - Elmina Mammadova-Bach
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Munich, Germany; Division of Nephrology, Department of Medicine IV, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - Alexander Dietrich
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Munich, Germany; German Center for Lung Research (DZL), Munich, Germany
| | - Thomas Gudermann
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Munich, Germany; German Center for Lung Research (DZL), Munich, Germany.
| | - Attila Braun
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians-University, Munich, Germany.
| |
Collapse
|
22
|
Kroscher KA, Fausnacht DW, McMillan RP, El-Kadi SW, Wall EH, Bravo DM, Rhoads RP. Supplementation with artificial sweetener and capsaicin alters metabolic flexibility and performance in heat-stressed and feed-restricted pigs. J Anim Sci 2022; 100:6652329. [PMID: 35908791 PMCID: PMC9339275 DOI: 10.1093/jas/skac195] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/24/2022] [Indexed: 12/17/2022] Open
Abstract
Substantial economic losses in animal agriculture result from animals experiencing heat stress (HS). Pigs are especially susceptible to HS, resulting in reductions in growth, altered body composition, and compromised substrate metabolism. In this study, an artificial high-intensity sweetener and capsaicin (CAPS-SUC; Pancosma, Switzerland) were supplemented in combination to mitigate the adverse effects of HS on pig performance. Forty cross-bred barrows (16.2 ± 6 kg) were assigned to one of five treatments: thermal neutral controls (TN) (22 ± 1.2 °C; 38%-73% relative humidity) with ad libitum feed, HS conditions with ad libitum feed with (HS+) or without (HS-) supplementation, and pair-fed to HS with (PF+) or without supplementation (PF-). Pigs in heat-stressed treatments were exposed to a cyclical environmental temperature of 12 h at 35 ± 1.2 °C with 27%-45% relative humidity and 12 h at 30 ± 1.1 °C with 24%-35% relative humidity for 21 d. Supplementation (0.1 g/kg feed) began 7 d before and persisted through the duration of environmental or dietary treatments (HS/PF), which lasted for 21 d. Rectal temperatures and respiration rates (RR; breaths/minute) were recorded thrice daily, and feed intake (FI) was recorded daily. Before the start and at the termination of environmental treatments (HS/PF), a muscle biopsy of the longissimus dorsi was taken for metabolic analyses. Blood samples were collected weekly, and animals were weighed every 3 d during treatment. Core temperature (TN 39.2 ± 0.02 °C, HS- 39.6 ± 0.02 °C, and HS+ 39.6 ± 0.02 °C, P < 0.001) and RR (P < 0.001) were increased in both HS- and HS+ groups, but no difference was detected between HS- and HS+. PF- pigs exhibited reduced core temperature (39.1 ± 0.02 °C, P < 0.001), which was restored in PF+ pigs (39.3 ± 0.02 °C) to match TN. Weight gain and feed efficiency were reduced in PF- pigs (P < 0.05) but not in the PF+ or the HS- or HS+ groups. Metabolic flexibility was decreased in the HS- group (-48.4%, P < 0.05) but maintained in the HS+ group. CAPS-SUC did not influence core temperature or weight gain in HS pigs but did restore core temperature, weight gain, and feed efficiency in supplemented PF pigs. In addition, supplementation restored metabolic flexibility during HS and improved weight gain and feed efficiency during PF, highlighting CAPS-SUC's therapeutic metabolic effects.
Collapse
Affiliation(s)
- Kellie A Kroscher
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Dane W Fausnacht
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Ryan P McMillan
- The Metabolism Core, Virginia Tech, Blacksburg, VA 24061, USA
| | - Samer W El-Kadi
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | | | | | - Robert P Rhoads
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| |
Collapse
|
23
|
Latragna A, Sabaté San José A, Tsimpos P, Vermeiren S, Gualdani R, Chakrabarti S, Callejo G, Desiderio S, Shomroni O, Sitte M, Kricha S, Luypaert M, Vanhollebeke B, Laumet G, Salinas G, Smith ESJ, Ris L, Bellefroid EJ. Prdm12 modulates pain-related behavior by remodeling gene expression in mature nociceptors. Pain 2022; 163:e927-e941. [PMID: 34961757 PMCID: PMC9341233 DOI: 10.1097/j.pain.0000000000002536] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 10/29/2021] [Accepted: 11/03/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Prdm12 is a conserved epigenetic transcriptional regulator that displays restricted expression in nociceptors of the developing peripheral nervous system. In mice, Prdm12 is required for the development of the entire nociceptive lineage. In humans, PRDM12 mutations cause congenital insensitivity to pain, likely because of the loss of nociceptors. Prdm12 expression is maintained in mature nociceptors suggesting a yet-to-be explored functional role in adults. Using Prdm12 inducible conditional knockout mouse models, we report that in adult nociceptors Prdm12 is no longer required for cell survival but continues to play a role in the transcriptional control of a network of genes, many of them encoding ion channels and receptors. We found that disruption of Prdm12 alters the excitability of dorsal root ganglion neurons in culture. Phenotypically, we observed that mice lacking Prdm12 exhibit normal responses to thermal and mechanical nociceptive stimuli but a reduced response to capsaicin and hypersensitivity to formalin-induced inflammatory pain. Together, our data indicate that Prdm12 regulates pain-related behavior in a complex way by modulating gene expression in adult nociceptors and controlling their excitability. The results encourage further studies to assess the potential of Prdm12 as a target for analgesic development.
Collapse
Affiliation(s)
- Aurore Latragna
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
- Laboratory of Neuroscience, UMONS Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
| | - Alba Sabaté San José
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - Panagiotis Tsimpos
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - Simon Vermeiren
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - Roberta Gualdani
- Laboratory of Neuroscience, UMONS Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
| | | | - Gerard Callejo
- Department of Pharmacology, University of Cambridge, Cambridge, United Kingdom
| | - Simon Desiderio
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - Orr Shomroni
- NGS Integrative Genomics, Department of Human Genetics at the University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Maren Sitte
- NGS Integrative Genomics, Department of Human Genetics at the University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Sadia Kricha
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - Maëlle Luypaert
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - Benoit Vanhollebeke
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - Geoffroy Laumet
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Gabriela Salinas
- NGS Integrative Genomics, Department of Human Genetics at the University Medical Center Göttingen (UMG), Göttingen, Germany
| | - Ewan St. John Smith
- Department of Pharmacology, University of Cambridge, Cambridge, United Kingdom
| | - Laurence Ris
- Laboratory of Neuroscience, UMONS Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
| | - Eric J. Bellefroid
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| |
Collapse
|
24
|
Rosenbaum T, Morales-Lázaro SL, Islas LD. TRP channels: a journey towards a molecular understanding of pain. Nat Rev Neurosci 2022; 23:596-610. [PMID: 35831443 DOI: 10.1038/s41583-022-00611-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2022] [Indexed: 12/18/2022]
Abstract
The perception of nociceptive signals, which are translated into pain, plays a fundamental role in the survival of organisms. Because pain is linked to a negative sensation, animals learn to avoid noxious signals. These signals are detected by receptors, which include some members of the transient receptor potential (TRP) family of ion channels that act as transducers of exogenous and endogenous noxious cues. These proteins have been in the focus of the field of physiology for several years, and much knowledge of how they regulate the function of the cell types and organs where they are expressed has been acquired. The last decade has been especially exciting because the 'resolution revolution' has allowed us to learn the molecular intimacies of TRP channels using cryogenic electron microscopy. These findings, in combination with functional studies, have provided insights into the role played by these channels in the generation and maintenance of pain.
Collapse
Affiliation(s)
- Tamara Rosenbaum
- Departamento de Neurociencia Cognitiva, Instituto de Fisiología Celular, UNAM, Mexico City, Mexico.
| | - Sara L Morales-Lázaro
- Departamento de Neurociencia Cognitiva, Instituto de Fisiología Celular, UNAM, Mexico City, Mexico
| | - León D Islas
- Departamento de Fisiología, Facultad de Medicina, UNAM, Mexico City, Mexico
| |
Collapse
|
25
|
Abstract
BACKGROUND Neuropathic pain is a condition caused by a lesion or disease of the somatosensory nervous system. It may present as debilitating pain with a sensation of burning and electric-like symptoms and is often difficult to manage effectively. Although pharmacological medications are the first line of treatment, multidisciplinary teams are sometimes required to provide appropriate treatment to improve quality of life and overall wellbeing. AIM The aim of this study is to present a case of post herpetic neuralgia relieved successfully by the compound palmitoylethanolamide (PEA) - a natural alternative to pharmacological pain relief. METHODS We present the case of a 67 year-old male with ongoing post-herpetic neuralgia, over a 3-year period, as a result of complications from shingles (herpes zoster). Previous studies on the relationship between PEA and neuropathy were reviewed, with an attempt to discuss the possible underlying mechanism of PEA on neuropathic pain. RESULTS PEA demonstrated effective pain relief within 48 hours at an administered daily dose of 900 mg (10 mg/kg). CONCLUSIONS PEA may offer a valid nutraceutical treatment for practitioners.
Collapse
Affiliation(s)
- Despina Kamper
- Western Sydney University, Torrens University, Sydney, Nutrition Australia
| |
Collapse
|
26
|
Xu J, Ghadiri M, Svolos M, McParland B, Traini D, Ong HX, Young PM. Investigating Potential TRPV1 Positive Feedback to Explain TRPV1 Upregulation in Airway Disease States. Drug Dev Ind Pharm 2022; 47:1924-1934. [PMID: 35473456 DOI: 10.1080/03639045.2022.2070759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The airway epithelium is a potential source of pathophysiology through activation of transient potential receptor vallinoid type 1 (TRPV1) channel. A positive feedback cycle caused by TRPV1 activity is hypothesised to induce upregulation and production of inflammatory cytokines, leading to exacerbations of chronic airway diseases. These cytokine and protein regulation effects were investigated in this study. METHODS Healthy (BEAS-2B) and cancer-derived (Calu-3) airway epithelial cell lines were assessed for changes to TRPV1 protein expression and mRNA expression following exposure to capsaicin (5 µM to 50 µM), and TRPV1 modulators including heat (43 °C), and hydrochloric acid (pH 3.4 to pH 6.4). Cytotoxicity was measured to determine the working concentration ranges of treatment. Subsequent bronchoconstriction by TRPV1 activation with capsaicin was measured on guinea pig airway tissue to confirm locally mediated activity without the action of known neuronal inputs. RESULTS TRPV1 protein expression was not different for all capsaicin, acidity, and heat exposures (P > 0.05), and was replicated in mRNA protein expression (P > 0.05). IL-6 and IL-8 expression were lower in BEAS-2B and Calu-3 cell lines exposed with acidity and heat (P < 0.05), but not consistently with capsaicin exposure, with potential cytotoxic effects possible. CONCLUSIONS TRPV1 expression was present in airway epithelial cells but its expression was not changed after activation by TRPV1 activators. Thus, it was not apparent the reason for reported TRPV1 upregulation in patients with airway disease states. More complex mechanisms are likely involved and will require further investigation.
Collapse
Affiliation(s)
- Jesse Xu
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Camperdown NSW 2006, Australia
| | - Maliheh Ghadiri
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia
| | - Maree Svolos
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia
| | - Brent McParland
- School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Camperdown NSW 2006, Australia
| | - Daniela Traini
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Australia
| | - Hui Xin Ong
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Australia
| | - Paul M Young
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Department of Marketing, Macquarie Business School, Macquarie University, NSW 2109, Australia
| |
Collapse
|
27
|
Cho A, Hall BE, Limaye AS, Wang S, Chung MK, Kulkarni AB. Nociceptive signaling through transient receptor potential vanilloid 1 is regulated by Cyclin Dependent Kinase 5-mediated phosphorylation of T407 in vivo. Mol Pain 2022; 18:17448069221111473. [PMID: 35726573 PMCID: PMC9251968 DOI: 10.1177/17448069221111473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 06/10/2022] [Indexed: 11/16/2022] Open
Abstract
Cyclin dependent kinase 5 (Cdk5) is a key neuronal kinase whose activity can modulate thermo-, mechano-, and chemo-nociception. Cdk5 can modulate nociceptor firing by phosphorylating pain transducing ion channels like the transient receptor potential vanilloid 1 (TRPV1), a thermoreceptor that is activated by noxious heat, acidity, and capsaicin. TRPV1 is phosphorylated by Cdk5 at threonine-407 (T407), which then inhibits Ca2+ dependent desensitization. To explore the in vivo implications of Cdk5-mediated TRPV1 phosphorylation on pain perception, we engineered a phospho-null mouse where we replaced T407 with alanine (T407A). The T407A point mutation did not affect the expression of TRPV1 in nociceptors of the dorsal root ganglia and trigeminal ganglia (TG). However, behavioral tests showed that the TRPV1T407A knock-in mice have reduced aversion to oral capsaicin along with a trend towards decreased facial displays of pain after a subcutaneous injection of capsaicin into the vibrissal pad. In addition, the TRPV1T407A mice display basal thermal hypoalgesia with increased paw withdrawal latency while tested on a hot plate. These results indicate that phosphorylation of TRPV1 by Cdk5 can have important consequences on pain perception, as loss of the Cdk5 phosphorylation site reduced capsaicin- and heat-evoked pain behaviors in mice.
Collapse
Affiliation(s)
- Andrew Cho
- Gene Transfer Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Bradford E Hall
- Functional Genomics Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Advait S Limaye
- Gene Transfer Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Sheng Wang
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, The University of Maryland, Baltimore, MD, USA
| | - Man-Kyo Chung
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, The University of Maryland, Baltimore, MD, USA
| | - Ashok B Kulkarni
- Gene Transfer Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
- Functional Genomics Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
28
|
Abstract
Pertussis, also known as whooping cough, is a contagious respiratory disease caused by the Gram-negative bacterium Bordetella pertussis. This disease is characterized by severe and uncontrollable coughing, which imposes a significant burden on patients. However, its etiological agent and the mechanism are totally unknown because of a lack of versatile animal models that reproduce the cough. Here, we present a mouse model that reproduces coughing after intranasal inoculation with the bacterium or its components and demonstrate that lipooligosaccharide (LOS), pertussis toxin (PTx), and Vag8 of the bacterium cooperatively function to cause coughing. Bradykinin induced by LOS sensitized a transient receptor potential ion channel, TRPV1, which acts as a sensor to evoke the cough reflex. Vag8 further increased bradykinin levels by inhibiting the C1 esterase inhibitor, the major downregulator of the contact system, which generates bradykinin. PTx inhibits intrinsic negative regulation systems for TRPV1 through the inactivation of Gi GTPases. Our findings provide a basis to answer long-standing questions on the pathophysiology of pertussis cough.
Collapse
|
29
|
Bousquet J, Haahtela T, Blain H, Czarlewski W, Zuberbier T, Bedbrook A, Cruz AA, Fonseca JA, Klimek L, Kuna P, Samolinski B, Valiulis A, Lemaire A, Anto JM. Available and affordable complementary treatments for COVID‐19: From hypothesis to pilot studies and the need for implementation. Clin Transl Allergy 2022; 12:e12127. [PMID: 35344297 PMCID: PMC8967265 DOI: 10.1002/clt2.12127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 02/08/2022] [Indexed: 12/14/2022] Open
Affiliation(s)
- Jean Bousquet
- Institute of Allergology Charité – Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Berlin Germany
- University Hospital Montpellier Montpellier France
- Allergology and Immunology Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP) Berlin Germany
| | - Tari Haahtela
- Skin and Allergy Hospital Helsinki University Hospital University of Helsinki Helsinki Finland
| | - Hubert Blain
- Department of Geriatrics Montpellier University Hospital, MUSE Montpellier France
| | | | - Torsten Zuberbier
- Institute of Allergology Charité – Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Berlin Germany
- Allergology and Immunology Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP) Berlin Germany
| | | | - Alvaro A. Cruz
- Fundaçao ProAR Federal University of Bahia and GARD/WHO Planning Group Salvador Bahia Brazil
| | - Joao A. Fonseca
- Department of Community Medicine Information and Health Decision Sciences (MEDCIDS) Faculty of Medicine, University of Porto Porto Portugal
- Patient‐Centred Innovation and Technologies Group (PaCeIT) Center for Health Technology and Services Research (CINTESIS) University of Porto Porto Portugal
- Medicina, EDucaçao, I&D e Avaliaçao Lda (MEDIDA) Porto Portugal
- Imunoalergologia CUF Porto Portugal
| | - Ludger Klimek
- Department of Otolaryngology, Head and Neck Surgery Wiesbaden Germany
- Center for Rhinology and Allergology Wiesbaden Germany
| | - Piotr Kuna
- Division of Internal Medicine, Asthma and Allergy Barlicki University Hospital Medical University of Lodz Lodz Poland
| | - Boleslaw Samolinski
- Department of Prevention of Environmental Hazards, Allergology and Immunology Medical University of Warsaw Warsaw Poland
| | - Arunas Valiulis
- Institute of Clinical Medicine and Institute of Health Sciences Medical Faculty of Vilnius University Vilnius Lithuania
| | | | - Josep M. Anto
- IMIM (Hospital del Mar Medical Research Institute) Barcelona Spain
- Universitat Pompeu Fabra (UPF) Barcelona Spain
- CIBER Epidemiología y Salud Pública (CIBERESP) Barcelona Spain
- ISGlobal Barcelona Institute for Global Health Barcelona Spain
| |
Collapse
|
30
|
Deng F, Zhao BC, Yang X, Lin ZB, Sun QS, Wang YF, Yan ZZ, Liu WF, Li C, Hu JJ, Liu KX. The gut microbiota metabolite capsiate promotes Gpx4 expression by activating TRPV1 to inhibit intestinal ischemia reperfusion-induced ferroptosis. Gut Microbes 2022; 13:1-21. [PMID: 33779497 PMCID: PMC8009132 DOI: 10.1080/19490976.2021.1902719] [Citation(s) in RCA: 111] [Impact Index Per Article: 55.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Ferroptosis, a new type of cell death has been found to aggravate intestinal ischemia/reperfusion (I/R) injury. However, little is known about the changes of gut microbiota and metabolites in intestinal I/R and the role of gut microbiota metabolites on ferroptosis-induced intestinal I/R injury. This study aimed to establish a mouse intestinal I/R model and ileum organoid hypoxia/reoxygenation (H/R) model to explore the changes of the gut microbiota and metabolites during intestinal I/R and protective ability of capsiate (CAT) against ferroptosis-dependent intestinal I/R injury. Intestinal I/R induced disturbance of gut microbiota and significant changes in metabolites. We found that CAT is a metabolite of the gut microbiota and that CAT levels in the preoperative stool of patients undergoing cardiopulmonary bypass were negatively correlated with intestinal I/R injury. Furthermore, CAT reduced ferroptosis-dependent intestinal I/R injury in vivo and in vitro. However, the protective effects of CAT against ferroptosis-dependent intestinal I/R injury were abolished by RSL3, an inhibitor of glutathione peroxidase 4 (Gpx4), which is a negative regulator of ferroptosis. We also found that the ability of CAT to promote Gpx4 expression and inhibit ferroptosis-dependent intestinal I/R injury was abrogated by JNJ-17203212, an antagonist of transient receptor potential cation channel subfamily V member 1 (TRPV1). This study suggests that the gut microbiota metabolite CAT enhances Gpx4 expression and inhibits ferroptosis by activating TRPV1 in intestinal I/R injury, providing a potential avenue for the management of intestinal I/R injury.
Collapse
Affiliation(s)
- Fan Deng
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Bing-Cheng Zhao
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiao Yang
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ze-Bin Lin
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Qi-Shun Sun
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yi-Fan Wang
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zheng-Zheng Yan
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Wei-Feng Liu
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Cai Li
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jing-Juan Hu
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China,Jing-Juan Hu Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ke-Xuan Liu
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China,CONTACT Ke-Xuan Liu
| |
Collapse
|
31
|
Miller M, Koch SE, Veteto A, Domeier T, Rubinstein J. Role of Known Transient Receptor Potential Vanilloid Channels in Modulating Cardiac Mechanobiology. Front Physiol 2021; 12:734113. [PMID: 34867442 PMCID: PMC8637880 DOI: 10.3389/fphys.2021.734113] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/27/2021] [Indexed: 12/17/2022] Open
Abstract
The transient receptor potential (TRP) channels have been described in almost every mammalian cell type. Several members of the Vanilloid (TRPV) subtype have been found to play important roles in modulating cardiac structure and function through Ca2+ handling in response to systemic and local mechanobiological cues. In this review, we will consider the most studied TRPV channels in the cardiovascular field; transient receptor potential vanilloid 1 as a modulator of cardiac hypertrophy; transient receptor potential vanilloid 2 as a structural and functional protein; transient receptor potential vanilloid 3 in the development of hypertrophy and myocardial fibrosis; and transient receptor potential vanilloid 4 in its roles modulating the fibrotic and functional responses of the heart to pressure overload. Lastly, we will also review the potential overlapping roles of these channels with other TRP proteins as well as the advances in translational and clinical arenas associated with TRPV channels.
Collapse
Affiliation(s)
- Michael Miller
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, KY, United States
| | - Sheryl E Koch
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, College of Medicine, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Adam Veteto
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, KY, United States.,IonOptix, LLC, Westwood, MA, United States
| | - Timothy Domeier
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, KY, United States
| | - Jack Rubinstein
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, College of Medicine, University of Cincinnati Medical Center, Cincinnati, OH, United States.,Division of Cardiovascular Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, OH, United States
| |
Collapse
|
32
|
Chi Y, Wang C, Wang M, Wan D, Huang F, Jiang Z, Crawford BM, Vo-Dinh T, Yuan F, Wu F, Pei ZM. Flg22-induced Ca 2+ increases undergo desensitization and resensitization. PLANT, CELL & ENVIRONMENT 2021; 44:3563-3575. [PMID: 34536020 DOI: 10.1111/pce.14186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
The flagellin epitope flg22, a pathogen-associated molecular pattern (PAMP), binds to the receptor-like kinase FLAGELLIN SENSING2 (FLS2), and triggers Ca2+ influx across the plasma membrane (PM). The flg22-induced increases in cytosolic Ca2+ concentration ([Ca2+ ]i ) (FICA) play a crucial role in plant innate immunity. It's well established that the receptor FLS2 and reactive oxygen species (ROS) burst undergo sensitivity adaptation after flg22 stimulation, referred to as desensitization and resensitization, to prevent over responses to pathogens. However, whether FICA also mount adaptation mechanisms to ensure appropriate and efficient responses against pathogens remains poorly understood. Here, we analysed systematically [Ca2+ ]i increases upon two successive flg22 treatments, recorded and characterized rapid desensitization but slow resensitization of FICA in Arabidopsis thaliana. Pharmacological analyses showed that the rapid desensitization might be synergistically regulated by ligand-induced FLS2 endocytosis as well as the PM depolarization. The resensitization of FICA might require de novo FLS2 protein synthesis. FICA resensitization appeared significantly slower than FLS2 protein recovery, suggesting additional regulatory mechanisms of other components, such as flg22-related Ca2+ permeable channels. Taken together, we have carefully defined the FICA sensitivity adaptation, which will facilitate further molecular and genetic dissection of the Ca2+ -mediated adaptive mechanisms in PAMP-triggered immunity.
Collapse
Affiliation(s)
- Yuan Chi
- College of Life Sciences, Zhejiang University, Hangzhou, China
- Department of Biology, Duke University, Durham, North Carolina, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Chao Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Mengyun Wang
- College of Life Sciences, Zhejiang University, Hangzhou, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Di Wan
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Feifei Huang
- Department of Biology, Duke University, Durham, North Carolina, USA
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Zhonghao Jiang
- Department of Biology, Duke University, Durham, North Carolina, USA
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Bridget M Crawford
- Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina, USA
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, USA
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina, USA
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, USA
| | - Fang Yuan
- Department of Biology, Duke University, Durham, North Carolina, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Feihua Wu
- Department of Biology, Duke University, Durham, North Carolina, USA
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Zhen-Ming Pei
- Department of Biology, Duke University, Durham, North Carolina, USA
- Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina, USA
| |
Collapse
|
33
|
Regulation of the Membrane Trafficking of the Mechanosensitive Ion Channels TRPV1 and TRPV4 by Zonular Tension, Osmotic Stress and Activators in the Mouse Lens. Int J Mol Sci 2021; 22:ijms222312658. [PMID: 34884463 PMCID: PMC8657824 DOI: 10.3390/ijms222312658] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 12/30/2022] Open
Abstract
Lens water transport generates a hydrostatic pressure gradient that is regulated by a dual-feedback system that utilizes the mechanosensitive transient receptor potential vanilloid (TRPV) channels, TRPV1 and TRPV4, to sense changes in mechanical tension and extracellular osmolarity. Here, we investigate whether the modulation of TRPV1 or TRPV4 activity dynamically affects their membrane trafficking. Mouse lenses were incubated in either pilocarpine or tropicamide to alter zonular tension, exposed to osmotic stress, or the TRPV1 and TRPV4 activators capsaicin andGSK1016790A (GSK101), and the effect on the TRPV1 and TRPV4 membrane trafficking in peripheral fiber cells visualized using confocal microscopy. Decreases in zonular tension caused the removal of TRPV4 from the membrane of peripheral fiber cells. Hypotonic challenge had no effect on TRPV1, but increased the membrane localization of TRPV4. Hypertonic challenge caused the insertion of TRPV1 and the removal of TRPV4 from the membranes of peripheral fiber cells. Capsaicin caused an increase in TRPV4 membrane localization, but had no effect on TRPV1; while GSK101 decreased the membrane localization of TRPV4 and increased the membrane localization of TRPV1. These reciprocal changes in TRPV1/4 membrane localization are consistent with the channels acting as mechanosensitive transducers of a dual-feedback pathway that regulates lens water transport.
Collapse
|
34
|
Evaluating methods and protocols of ferritin-based magnetogenetics. iScience 2021; 24:103094. [PMID: 34622149 PMCID: PMC8479696 DOI: 10.1016/j.isci.2021.103094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 07/15/2021] [Accepted: 09/03/2021] [Indexed: 11/22/2022] Open
Abstract
FeRIC (Ferritin iron Redistribution to Ion Channels) is a magnetogenetic technique that uses radiofrequency (RF) alternating magnetic fields to activate the transient receptor potential channels, TRPV1 and TRPV4, coupled to cellular ferritins. In cells expressing ferritin-tagged TRPV, RF stimulation increases the cytosolic Ca2+ levels via a biochemical pathway. The interaction between RF and ferritin increases the free cytosolic iron levels that, in turn, trigger chemical reactions producing reactive oxygen species and oxidized lipids that activate the ferritin-tagged TRPV. In this pathway, it is expected that experimental factors that disturb the ferritin expression, the ferritin iron load, the TRPV functional expression, or the cellular redox state will impact the efficiency of RF in activating ferritin-tagged TRPV. Here, we examined several experimental factors that either enhance or abolish the RF control of ferritin-tagged TRPV. The findings may help optimize and establish reproducible magnetogenetic protocols.
Collapse
|
35
|
Kuwashima Y, Yanagawa M, Abe M, Hiroshima M, Ueda M, Arita M, Sako Y. Comparative Analysis of Single-Molecule Dynamics of TRPV1 and TRPV4 Channels in Living Cells. Int J Mol Sci 2021; 22:ijms22168473. [PMID: 34445178 PMCID: PMC8395219 DOI: 10.3390/ijms22168473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/28/2021] [Accepted: 08/03/2021] [Indexed: 12/27/2022] Open
Abstract
TRPV1 and TRPV4, members of the transient receptor potential vanilloid family, are multimodal ion channels activated by various stimuli, including temperature and chemicals. It has been demonstrated that TRPV channels function as tetramers; however, the dynamics of the diffusion, oligomerization, and endocytosis of these channels in living cells are unclear. Here we undertook single-molecule time-lapse imaging of TRPV1 and TRPV4 in HEK 293 cells. Differences were observed between TRPV1 and TRPV4 before and after agonist stimulation. In the resting state, TRPV4 was more likely to form higher-order oligomers within immobile membrane domains than TRPV1. TRPV1 became immobile after capsaicin stimulation, followed by its gradual endocytosis. In contrast, TRPV4 was rapidly internalized upon stimulation with GSK1016790A. The selective loss of immobile higher-order oligomers from the cell surface through endocytosis increased the proportion of the fast-diffusing state for both subtypes. With the increase in the fast state, the association rate constants of TRPV1 and TRPV4 increased, regenerating the higher-order oligomers. Our results provide a possible mechanism for the different rates of endocytosis of TRPV1 and TRPV4 based on the spatial organization of the higher-order structures of the two TRPV channels.
Collapse
Affiliation(s)
- Yutaro Kuwashima
- Cellular Informatics Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan; (Y.K.); (M.A.); (M.H.)
- Division of Physiological Chemistry and Metabolism, Keio University Faculty of Pharmacy, Tokyo 105-0011, Japan;
| | - Masataka Yanagawa
- Cellular Informatics Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan; (Y.K.); (M.A.); (M.H.)
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8, Honcho, Kawaguchi 332-0012, Saitama, Japan
- Correspondence: (M.Y.); (Y.S.)
| | - Mitsuhiro Abe
- Cellular Informatics Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan; (Y.K.); (M.A.); (M.H.)
| | - Michio Hiroshima
- Cellular Informatics Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan; (Y.K.); (M.A.); (M.H.)
- Laboratory for Cell Signaling Dynamics, RIKEN Center for Biosystems Dynamics Research (BDR), 6-2-3, Furuedai, Suita 565-0874, Osaka, Japan;
| | - Masahiro Ueda
- Laboratory for Cell Signaling Dynamics, RIKEN Center for Biosystems Dynamics Research (BDR), 6-2-3, Furuedai, Suita 565-0874, Osaka, Japan;
- Laboratory of Single Molecule Biology, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita 565-0871, Osaka, Japan
| | - Makoto Arita
- Division of Physiological Chemistry and Metabolism, Keio University Faculty of Pharmacy, Tokyo 105-0011, Japan;
- Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences (IMS), Yokohama 230-0045, Kanagawa, Japan
- Cellular and Molecular Epigenetics Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Kanagawa, Japan
| | - Yasushi Sako
- Cellular Informatics Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan; (Y.K.); (M.A.); (M.H.)
- Correspondence: (M.Y.); (Y.S.)
| |
Collapse
|
36
|
Shibata M, Kayama Y, Takizawa T, Ibata K, Shimizu T, Yuzaki M, Suzuki N, Nakahara J. Resilience to capsaicin-induced mitochondrial damage in trigeminal ganglion neurons. Mol Pain 2021; 16:1744806920960856. [PMID: 32985330 PMCID: PMC7536481 DOI: 10.1177/1744806920960856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Capsaicin is an agonist of transient receptor potential cation channel subfamily V member 1 (TRPV1). Strong TRPV1 stimulation with capsaicin causes mitochondrial damage in primary sensory neurons. However, the effect of repetitive and moderate exposure to capsaicin on the integrity of neuronal mitochondria remains largely unknown. Our electron microscopic analysis revealed that repetitive stimulation of the facial skin of mice with 10 mM capsaicin induced short-term damage to the mitochondria in small-sized trigeminal ganglion neurons. Further, capsaicin-treated mice exhibited decreased sensitivity to noxious heat stimulation, indicating TRPV1 dysfunction, in parallel with the mitochondrial damage in the trigeminal ganglion neurons. To analyze the capsaicin-induced mitochondrial damage and its relevant cellular events in detail, we performed cell-based assays using TRPV1-expressing PC12 cells. Dose-dependent capsaicin-mediated mitochondrial toxicity was observed. High doses of capsaicin caused rapid destruction of mitochondrial internal structure, while low doses induced mitochondrial swelling. Further, capsaicin induced a dose-dependent loss of mitochondria and autophagy-mediated degradation of mitochondria (mitophagy). Concomitantly, transcriptional upregulation of mitochondrial proteins, cytochrome c oxidase subunit IV, Mic60/Mitofilin, and voltage-dependent anion channel 1 was observed, which implied induction of mitochondrial biogenesis to compensate for the loss of mitochondria. Collectively, although trigeminal ganglion neurons transiently exhibit mitochondrial damage and TRPV1 dysfunction following moderate capsaicin exposure, they appear to be resilient to such a challenge. Our in vitro data show a dose-response relationship in capsaicin-mediated mitochondrial toxicity. We postulate that induction of mitophagy and mitochondrial biogenesis in response to capsaicin stimulation play important roles in repairing the damaged mitochondrial system.
Collapse
Affiliation(s)
- Mamoru Shibata
- Department of Neurology, Keio University School of Medicine, Japan
| | - Yohei Kayama
- Department of Neurology, Keio University School of Medicine, Japan
| | - Tsubasa Takizawa
- Department of Neurology, Keio University School of Medicine, Japan
| | - Keiji Ibata
- Department of Physiology, Keio University School of Medicine, Japan.,Department of Physiology, St. Marianna Medical University, Japan
| | | | - Michisuke Yuzaki
- Department of Physiology, Keio University School of Medicine, Japan
| | - Norihiro Suzuki
- Department of Neurology, Keio University School of Medicine, Japan
| | - Jin Nakahara
- Department of Neurology, Keio University School of Medicine, Japan
| |
Collapse
|
37
|
TRPV1 activation and internalization is part of the LPS-induced inflammation in human iPSC-derived cardiomyocytes. Sci Rep 2021; 11:14689. [PMID: 34282193 PMCID: PMC8289830 DOI: 10.1038/s41598-021-93958-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 06/28/2021] [Indexed: 12/18/2022] Open
Abstract
The non-selective cation channel transient receptor potential vanilloid 1 (TRPV1) is expressed throughout the cardiovascular system. Recent evidence shows a role for TRPV1 in inflammatory processes. The role of TRPV1 for myocardial inflammation has not been established yet. Human induced pluripotent stem cell (iPSC)-derived cardiomyocytes (hiPSC-CM) from 4 healthy donors were incubated with lipopolysaccharides (LPS, 6 h), TRPV1 agonist capsaicin (CAP, 20 min) or the antagonist capsazepine (CPZ, 20 min). TRPV1 expression was studied by PCR and western blotting. TRPV1 internalization was analyzed by immunofluorescence. Interleukin-6 (IL-6) secretion and phosphorylation of JNK, p38 and ERK were determined by ELISA. TRPV1-associated ion channel current was measured by patch clamp. TRPV1-mRNA and -protein were expressed in hiPSC-CM. TRPV1 was localized in the plasma membrane. LPS significantly increased secretion of IL-6 by 2.3-fold, which was prevented by pre-incubation with CPZ. LPS induced TRPV1 internalization. Phosphorylation levels of ERK, p38 or JNK were not altered by TRPV1 stimulation or inhibition. LPS and IL-6 significantly lowered TRPV1-mediated ion channel current. TRPV1 mediates the LPS-induced inflammation in cardiomyocytes, associated with changes of cellular electrophysiology. LPS-induced inflammation results in TRPV1 internalization. Further studies have to examine the underlying pathways and the clinical relevance of these findings.
Collapse
|
38
|
Rossi PAQ, Lira FS, Bezerra VR, Clark NW, Fukuda DH, Panissa VLG. Acute Response to Capsiate Supplementation at Rest and during Exercise on Energy Intake, Appetite, Metabolism, and Autonomic Function: A Randomized Trial. J Am Coll Nutr 2021; 41:541-550. [PMID: 34252340 DOI: 10.1080/07315724.2021.1938294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The purpose of the present study was to examine the effect of capsiate supplementation on energy intake, self-reported appetite-related sensations, energy expenditure, fat oxidation, and autonomic parameters with and without an exercise intervention. METHODS Thirteen healthy men completed four randomized trials: two trials for the control condition (without exercise), one with capsiate supplementation (CTRLcap) and one with a placebo (CTRLpla), and two trials for the exercise condition, one with capsiate supplementation (EXcap) and one with placebo (EXpla). Exercise sessions were performed 150 min after the consumption of a standardized breakfast, and supplementation 115 min after consumption of breakfast. An ad libitum buffet was offered 200 min following the completion of the standardized breakfast, and energy intake (EI) and relative energy intake (REI) (relative energy intake = energy intake - energy expenditure related to exercise) were evaluated. RESULTS There were no significant effects on EI, self-reported appetite sensations, fat oxidation, and energy expenditure. REI was reduced in conditions involving EX when compared to CTRL. A low-frequency to high-frequency ratio for heart rate variability was higher in CTRLcap (1.6 ± 1.1) vs. CTRLpla (1.2 ± 0.9) (p = 0.025; d = 0.39). CONCLUSION Acute capsiate supplementation combined with aerobic exercise has limited effects on the examined variables (EI, REI, fat oxidation, energy expenditure, and autonomic parameters), while changes in the autonomic nervous system function in the absence of exercise may have occurred without influencing other variables. CLINICAL TRIAL REGISTRATION ensaiosclinicos.gov.br number, RBR-5pckyr https://ensaiosclinicos.gov.br/rg/RBR-5pckyr.
Collapse
Affiliation(s)
- Priscila A Q Rossi
- Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University, Presidente Prudente, São Paulo, Brazil
| | - Fabio S Lira
- Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University, Presidente Prudente, São Paulo, Brazil
| | - Vanessa R Bezerra
- Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University, Presidente Prudente, São Paulo, Brazil
| | - Nicolas W Clark
- Institute of Exercise Physiology and Rehabilitation Science, School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, Florida
| | - David H Fukuda
- Institute of Exercise Physiology and Rehabilitation Science, School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, Florida
| | - Valéria L G Panissa
- Department of Sport, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
39
|
de Moura E Silva VEL, Cholewa JM, Jäger R, Zanchi NE, de Freitas MC, de Moura RC, Barros EML, Antunes BM, Caperuto EC, Ribeiro SLG, Lira FS, Pereira Dos Santos MA, Rossi FE. Chronic capsiate supplementation increases fat-free mass and upper body strength but not the inflammatory response to resistance exercise in young untrained men: a randomized, placebo-controlled and double-blind study. J Int Soc Sports Nutr 2021; 18:50. [PMID: 34154603 PMCID: PMC8218493 DOI: 10.1186/s12970-021-00446-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 05/24/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute capsaicinoid and capsinoid supplementation has endurance and resistance exercise benefits; however, if these short-term performance benefits translate into chronic benefits when combined with resistance training is currently unknown. This study investigated changes of chronic Capsiate supplementation on muscular adaptations, inflammatory response and performance in untrained men. METHODS Twenty untrained men were randomized to ingest 12 mg Capsiate (CAP) or placebo in a parallel, double-blind design. Body composition and performance were measured at pre-training and after 6 weeks of resistance training. An acute resistance exercise session test was performed pre and post-intervention. Blood samples were collected at rest and post-resistance exercise to analyze Tumor necrosis factor- (TNF-), Soluble TNF- receptor (sTNF-r), Interleukin-6 (IL-6) and Interleukin-10 (IL-10). RESULTS Exercise and CAP supplementation increased fat-free mass in comparison to baseline by 1.5 kg (P < 0.001), however, the majority of the increase (1.0 kg) resulted from an increase in total body water. The CAP change scores for fat-free mass were significantly greater in comparison to the placebo (CAP ∆%= 2.1 ± 1.8 %, PLA ∆%= 0.7 ± 1.3 %, P = 0.043) and there was a significant difference between groups in the bench press exercise (P = 0.034) with greater upper body strength change score for CAP (∆%= 13.4 ± 9.1 %) compared to placebo (∆%= 5.8 ± 5.2 %), P = 0.041. CAP had no effect on lower body strength and no supplementation interactions were observed for all cytokines in response to acute resistance exercise (P > 0.05). CONCLUSION Chronic Capsiate supplementation combined with resistance training during short period (6 weeks) increased fat-free mass and upper body strength but not inflammatory response and performance in young untrained men.
Collapse
Affiliation(s)
- Vilton Emanoel Lopes de Moura E Silva
- Immunometabolism of Skeletal Muscle and Exercise Research Group, Department of Physical Education, Federal University of Piauí (UFPI), "Ministro Petrônio Portella" Campus, PI, 64049-550, Teresina, Brazil
| | - Jason Michael Cholewa
- Department of Exercise Physiology, University of Lynchburg, Lynchburg, VA, United States
| | - Ralf Jäger
- Increnovo LLC, 2138 E Lafayette Pl, 53202, Milwaukee, WI, United States
| | - Nelo Eidy Zanchi
- Laboratory of Cellular and Molecular Biology of Skeletal Muscle (LABCEMME), Department of Physical Education, Federal University of Maranhão, São Luís, Brazil
| | | | - Rayane Carvalho de Moura
- Immunometabolism of Skeletal Muscle and Exercise Research Group, Department of Physical Education, Federal University of Piauí (UFPI), "Ministro Petrônio Portella" Campus, PI, 64049-550, Teresina, Brazil
| | - Esmeralda Maria Lustosa Barros
- Department of Biophysics and Physiology, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Barbara Moura Antunes
- Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | | | - Sergio Luiz Galan Ribeiro
- Immunometabolism of Skeletal Muscle and Exercise Research Group, Department of Physical Education, Federal University of Piauí (UFPI), "Ministro Petrônio Portella" Campus, PI, 64049-550, Teresina, Brazil
| | - Fabio Santos Lira
- Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | - Marcos Antônio Pereira Dos Santos
- Department of Biophysics and Physiology, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Fabrício Eduardo Rossi
- Immunometabolism of Skeletal Muscle and Exercise Research Group, Department of Physical Education, Federal University of Piauí (UFPI), "Ministro Petrônio Portella" Campus, PI, 64049-550, Teresina, Brazil. .,Associate Professor at Graduation Program in Science and Health, Federal University of Piaui (UFPI), Teresina-PI, Brazil.
| |
Collapse
|
40
|
A pain-induced tonic hypodopaminergic state augments phasic dopamine release in the nucleus accumbens. Pain 2021; 161:2376-2384. [PMID: 32453137 DOI: 10.1097/j.pain.0000000000001925] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Diseases and disorders such as Parkinson disease, schizophrenia, and chronic pain are characterized by altered mesolimbic dopaminergic neurotransmission. Dopamine release in the nucleus accumbens influences behavior through both tonic and phasic signaling. Tonic dopamine levels are hypothesized to inversely regulate phasic signals through dopamine D2 receptor feedback inhibition. We tested this hypothesis directly in the context of ongoing pain. Tonic and phasic dopamine signals were measured using fast-scan controlled-adsorption voltammetry and fast-scan cyclic voltammetry, respectively, in the nucleus accumbens shell of male rats with standardized levels of anesthesia. Application of capsaicin to the cornea produced a transient decrease in tonic dopamine levels. During the pain-induced hypodopaminergic state, electrically evoked phasic dopamine release was significantly increased when compared to baseline, evoked phasic release. A second application of capsaicin to the same eye had a lessened effect on tonic dopamine suggesting desensitization of TRPV1 channels in that eye. Capsaicin treatment in the alternate cornea, however, again produced coincident decreased dopaminergic tone and increased phasic dopamine release. These findings occurred independently of stimulus lateralization relative to the hemisphere of dopamine measurement. Our data show that (1) the mesolimbic dopamine circuit reliably encodes acute noxious stimuli; (2) ongoing pain produces decreases in dopaminergic tone; and (3) pain-induced decreases in tonic dopamine correspond to augmented evoked phasic dopamine release. Enhanced phasic dopamine neurotransmission resulting from salient stimuli may contribute to increased impulsivity and cognitive deficits often observed in conditions associated with decreased dopaminergic tone, including Parkinson disease and chronic pain.
Collapse
|
41
|
Bousquet J, Czarlewski W, Zuberbier T, Mullol J, Blain H, Cristol JP, De La Torre R, Pizarro Lozano N, Le Moing V, Bedbrook A, Agache I, Akdis CA, Canonica GW, Cruz AA, Fiocchi A, Fonseca JA, Fonseca S, Gemicioğlu B, Haahtela T, Iaccarino G, Ivancevich JC, Jutel M, Klimek L, Kraxner H, Kuna P, Larenas-Linnemann DE, Martineau A, Melén E, Okamoto Y, Papadopoulos NG, Pfaar O, Regateiro FS, Reynes J, Rolland Y, Rouadi PW, Samolinski B, Sheikh A, Toppila-Salmi S, Valiulis A, Choi HJ, Kim HJ, Anto JM. Potential Interplay between Nrf2, TRPA1, and TRPV1 in Nutrients for the Control of COVID-19. Int Arch Allergy Immunol 2021; 182:324-338. [PMID: 33567446 PMCID: PMC8018185 DOI: 10.1159/000514204] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 12/15/2020] [Indexed: 12/16/2022] Open
Abstract
In this article, we propose that differences in COVID-19 morbidity may be associated with transient receptor potential ankyrin 1 (TRPA1) and/or transient receptor potential vanilloid 1 (TRPV1) activation as well as desensitization. TRPA1 and TRPV1 induce inflammation and play a key role in the physiology of almost all organs. They may augment sensory or vagal nerve discharges to evoke pain and several symptoms of COVID-19, including cough, nasal obstruction, vomiting, diarrhea, and, at least partly, sudden and severe loss of smell and taste. TRPA1 can be activated by reactive oxygen species and may therefore be up-regulated in COVID-19. TRPA1 and TRPV1 channels can be activated by pungent compounds including many nuclear factor (erythroid-derived 2) (Nrf2)-interacting foods leading to channel desensitization. Interactions between Nrf2-associated nutrients and TRPA1/TRPV1 may be partly responsible for the severity of some of the COVID-19 symptoms. The regulation by Nrf2 of TRPA1/TRPV1 is still unclear, but suggested from very limited clinical evidence. In COVID-19, it is proposed that rapid desensitization of TRAP1/TRPV1 by some ingredients in foods could reduce symptom severity and provide new therapeutic strategies.
Collapse
Affiliation(s)
- Jean Bousquet
- Department of Dermatology and Allergy, Comprehensive Allergy Center, Charité, and Berlin Institute of Health, Comprehensive Allergy Center, Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Berlin, Germany, .,University Hospital and MACVIA France, Montpellier, France,
| | | | - Torsten Zuberbier
- Department of Dermatology and Allergy, Comprehensive Allergy Center, Charité, and Berlin Institute of Health, Comprehensive Allergy Center, Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Joaquim Mullol
- Rhinology Unit & Smell Clinic, ENT Department, Hospital Clinic - Clinical & Experimental Respiratory Immunoallergy, IDIBAPS, CIBERES, Universitat de Barcelona, Barcelona, Spain
| | - Hubert Blain
- Department of Geriatrics, Montpellier University Hospital, Montpellier, France
| | - Jean-Paul Cristol
- Laboratoire de Biochimie et Hormonologie, PhyMedExp, Université de Montpellier, INSERM, CNRS, CHU de, Montpellier, France
| | - Rafael De La Torre
- CIBER Fisiopatologia de la Obesidad y Nutrición (CIBEROBN), Madrid, Spain.,IMIM (Hospital del Mar Research Institute), Barcelona, Spain.,Departament de Ciències Experimentals i de la Salut Toxicologia, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | | | | | - Anna Bedbrook
- University Hospital and MACVIA France, Montpellier, France.,MASK-air, Montpellier, France
| | - Ioana Agache
- Faculty of Medicine, Transylvania University, Brasov, Romania
| | - Cezmi A Akdis
- Christine Kühne - Center for Allergy Research and Education (CK-CARE), Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Zurich, Switzerland
| | - G Walter Canonica
- Personalized Medicine, Asthma and Allergy, Humanitas Clinical and Research Center IRCCS and Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
| | - Alvaro A Cruz
- Fundação ProAR, Federal University of Bahia and GARD/WHO Planning Group, Salvador, Brazil
| | - Alessandro Fiocchi
- Division of Allergy, The Bambino Gesù Children's Research Hospital IRCCS, Rome, Italy
| | - Joao A Fonseca
- CINTESIS, Center for Research in Health Technologies and Information Systems, Faculdade de Medicina da Universidade do Porto, Porto, Portugal.,MEDIDA, Lda, Porto, Portugal
| | - Susana Fonseca
- GreenUPorto - Sustainable Agrifood Production Research Centre, DGAOT, Faculty of Sciences, University of Porto, Vila do Conde, Portugal
| | - Bilun Gemicioğlu
- Department of Pulmonary Diseases, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - Guido Iaccarino
- Interdepartmental Center of Research on Hypertension and Related Conditions CIRIAPA, Federico II University, Napoli, Italy
| | | | - Marek Jutel
- Department of Clinical Immunology, Wrocław Medical University and ALL-MED Medical Research Institute, Wrocław, Poland
| | - Ludger Klimek
- Center for Rhinology and Allergology, Wiesbaden, Germany
| | - Helga Kraxner
- Department of Otorhinolaryngology, Head and Neck Surgery, Semmelweis University, Budapest, Hungary
| | - Piotr Kuna
- Division of Internal Medicine, Asthma and Allergy, Barlicki University Hospital, Medical University of Lodz, Lodz, Poland
| | - Désirée E Larenas-Linnemann
- Center of Excellence in Asthma and Allergy, Médica Sur Clinical Foundation and Hospital, Mexico City, Mexico
| | - Adrian Martineau
- Institute for Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet and Sachs' Children's Hospital, Stockholm, Sweden
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology, Chiba University Hospital, Chiba, Japan
| | - Nikolaos G Papadopoulos
- Division of Infection, Immunity & Respiratory Medicine, Royal Manchester Children's Hospital, University of Manchester, Manchester, United Kingdom.,Allergy Department, 2nd Pediatric Clinic, Athens General Children's Hospital "P&A Kyriakou," University of Athens, Athens, Greece
| | - Oliver Pfaar
- Section of Rhinology and Allergy, Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Marburg, Philipps-Universität Marburg, Marburg, Germany
| | - Frederico S Regateiro
- Allergy and Clinical Immunology Unit, Centro Hospitalar e Universitário de Coimbra, Faculty of Medicine, Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, ICBR - Institute for Clinical and Biomedical Research, CIBB, University of Coimbra, Coimbra, Portugal
| | - Jacques Reynes
- Maladies Infectieuses et Tropicales, CHU, Montpellier, France
| | | | - Philip W Rouadi
- Department of Otolaryngology-Head and Neck Surgery, Eye and Ear University Hospital, Beirut, Lebanon
| | - Boleslaw Samolinski
- Department of Prevention of Environmental Hazards and Allergology, Medical University of Warsaw, Warsaw, Poland
| | - Aziz Sheikh
- Usher Institute, The University of Edinburgh, Edinburgh, United Kingdom
| | - Sanna Toppila-Salmi
- Skin and Allergy Hospital, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - Arunas Valiulis
- Vilnius University Faculty of Medicine, Institute of Clinical Medicine & Institute of Health Sciences, Vilnius, Lithuania
| | - Hak-Jong Choi
- Research and Development Division, Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, Republic of Korea
| | - Hyun Ju Kim
- Strategy and Planning Division, SME Service Department, World Institute of Kimchi, Gwangju, Republic of Korea
| | - Josep M Anto
- IMIM (Hospital del Mar Research Institute), Barcelona, Spain.,Departament de Ciències Experimentals i de la Salut Toxicologia, Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,ISGlobAL, Barcelona, Centre for Research in Environmental Epidemiology, Barcelona, Spain
| |
Collapse
|
42
|
Shuba YM. Beyond Neuronal Heat Sensing: Diversity of TRPV1 Heat-Capsaicin Receptor-Channel Functions. Front Cell Neurosci 2021; 14:612480. [PMID: 33613196 PMCID: PMC7892457 DOI: 10.3389/fncel.2020.612480] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/23/2020] [Indexed: 12/20/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is a calcium-permeable ion channel best known for its ability to be gated by the pungent constituent of red chili pepper, capsaicin, and related chemicals from the group of vanilloids as well as by noxious heat. As such, it is mostly expressed in sensory neurons to act as a detector of painful stimuli produced by pungent chemicals and high temperatures. Its activation is also sensitized by the numerous endogenous inflammatory mediators and second messengers, making it an important determinant of nociceptive signaling. Except for such signaling, though, neuronal TRPV1 activation may influence various organ functions by promoting the release of bioactive neuropeptides from sensory fiber innervation organs. However, TRPV1 is also found outside the sensory nervous system in which its activation and function is not that straightforward. Thus, TRPV1 expression is detected in skeletal muscle; in some types of smooth muscle; in epithelial and immune cells; and in adipocytes, where it can be activated by the combination of dietary vanilloids, endovanilloids, and pro-inflammatory factors while the intracellular calcium signaling that this initiates can regulate processes as diverse as muscle constriction, cell differentiation, and carcinogenesis. The purpose of the present review is to provide a clear-cut distinction between neurogenic TRPV1 effects in various tissues consequent to its activation in sensory nerve endings and non-neurogenic TRPV1 effects due to its expression in cell types other than sensory neurons.
Collapse
Affiliation(s)
- Yaroslav M Shuba
- Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| |
Collapse
|
43
|
Gao X, Zhuang J, Zhao L, Wei W, Xu F. Cross-effect of TRPV1 and EP3 receptor on coughs and bronchopulmonary C-neural activities. PLoS One 2021; 16:e0246375. [PMID: 33529249 PMCID: PMC7853511 DOI: 10.1371/journal.pone.0246375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 01/15/2021] [Indexed: 12/26/2022] Open
Abstract
Prostaglandin E2 (PGE2)-induced coughs in vivo and vagal nerve depolarization in vitro are inhibited by systemic and local administration of prostaglandin EP3 receptor (L-798106) and TRPV1 antagonists (JNJ 17203212). These results indicate a modulating effect of TRPV1 on the EP3 receptor-mediated cough responses to PGE2 likely through the vagal sensory nerve. This study aimed to determine whether 1) inhalation of aerosolized JNJ 17203212 and L-798106 affected cough responses to citric acid (CA, mainly stimulating TRPV1) and PGE2; 2) TRPV1 and EP3 receptor morphologically are co-expressed and electrophysiologically functioned in the individual of vagal pulmonary C-neurons (cell bodies of bronchopulmonary C-fibers in the nodose/jugular ganglia); and 3) there was a cross-effect of TRPV1 and EP3 receptor on these neural excitations. To this end, aerosolized CA or PGE2 was inhaled by unanesthetized guinea pigs pretreated without or with each antagonist given in aerosol form. Immunofluorescence was applied to identify the co-expression of TRPV1 and EP3 receptor in vagal pulmonary C-neurons (retrogradely traced by DiI). Whole-cell voltage patch clamp approach was used to detect capsaicin (CAP)- and PGE2-induced currents in individual vagal pulmonary C-neurons and determine the effects of the TRPV1 and EP3 receptor antagonists on the evoked currents. We found that PGE2-induced cough was attenuated by JNJ 17203212 or L-798106 and CA-evoked cough greatly suppressed only by JNJ 17203212. Approximately 1/4 of vagal pulmonary C-neurons co-expressed EP3 with a cell size < 20 μm. Both CAP- and PGE2-induced currents could be recorded in the individuals of some vagal pulmonary C-neurons. The former was largely inhibited only by JNJ 17203212, while the latter was suppressed by JNJ 17203212 or L-798106. The similarity of the cross-effect of both antagonists on cough and vagal pulmonary C-neural activity suggests that a subgroup of vagal pulmonary C-neurons co-expressing TRPV1 and EP3 receptor is, at least in part, responsible for the cough response to PGE2.
Collapse
Affiliation(s)
- Xiuping Gao
- Pathophysiology Program, Lovelace Biomedical Research Institute, Albuquerque, New Mexico, United States of America
| | - Jianguo Zhuang
- Pathophysiology Program, Lovelace Biomedical Research Institute, Albuquerque, New Mexico, United States of America
| | - Lei Zhao
- Pathophysiology Program, Lovelace Biomedical Research Institute, Albuquerque, New Mexico, United States of America
- Department of Exercise Physiology, Beijing Sport University, Beijing, China
| | - Wan Wei
- Pathophysiology Program, Lovelace Biomedical Research Institute, Albuquerque, New Mexico, United States of America
- Dongfang Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Fadi Xu
- Pathophysiology Program, Lovelace Biomedical Research Institute, Albuquerque, New Mexico, United States of America
- * E-mail:
| |
Collapse
|
44
|
Polymodal Activation and Desensitization of TRPV1 Receptor in Human Odontoblasts-Like Cells with Eugenol. Int J Dent 2021; 2020:8813979. [PMID: 33456468 PMCID: PMC7785394 DOI: 10.1155/2020/8813979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/10/2020] [Accepted: 12/21/2020] [Indexed: 11/23/2022] Open
Abstract
Dentinal hypersensitivity is a frequent reason for dental consultation, and its pathophysiology has not been fully clarified. Previous findings have made it possible to establish a relationship between the cellular sensory capacity and the activation of the polymodal transient receptor potential vanilloid 1 (TRPV1), which is responsible for the nociceptive response and whose desensitization could cause analgesia. Thus, the objective of this study was to determine the expression, localization, and functional activity of TRPV1 in human odontoblasts-like-cells (hOLCs) and the effect of eugenol (EUG) on its activation and desensitization. Human dental pulp stem cells (hDPSCs) were obtained from third molars and were characterized using flow cytometry, and their differentiation potential toward the osteoblastic, chondrogenic, and adipogenic lineages was investigated. Subsequently, the hDPSCs underwent odontogenic differentiation for 7, 14, and 21 days, and their phenotype (odontogenic markers dentin matrix protein-1 (DMP-1) and dentin sialoprotein (DSP)) was evaluated using immunofluorescence. The TRPV1 gene expression in hOLCs was estimated using RT-qPCR, and its localization was analyzed using immunofluorescence. Half-maximal effective concentration (EC50) from both eugenol (EUG) and capsaicin (CAP) was determined; in addition, receptor activation was evaluated against chemical, thermal, and pH stimuli. For the statistical analysis, a one-way ANOVA with a Tukey post hoc test (p < 0.05) was used. After establishing the in vitro model of hOLCs and the membrane location of TRPV1, its chemical activation with EUG and CAP was demonstrated, as well as its thermal activation at ≥ 43°C and with an acidic (<6) or basic pH (between 9 and 12). Receptor desensitization was achieved after 20 min of exposure to two concentrations of EUG (603.5 and 1000 µM). These findings represent a stepping-stone for the construction of a pulp pain study model oriented toward a therapeutic alternative for the treatment of dentinal hypersensitivity.
Collapse
|
45
|
Bousquet J, Czarlewski W, Zuberbier T, Mullol J, Blain H, Cristol JP, De La Torre R, Le Moing V, Pizarro Lozano N, Bedbrook A, Agache I, Akdis CA, Canonica GW, Cruz AA, Fiocchi A, Fonseca JA, Fonseca S, Gemicioğlu B, Haahtela T, Iaccarino G, Ivancevich JC, Jutel M, Klimek L, Kuna P, Larenas-Linnemann DE, Melén E, Okamoto Y, Papadopoulos NG, Pfaar O, Reynes J, Rolland Y, Rouadi PW, Samolinski B, Sheikh A, Toppila-Salmi S, Valiulis A, Choi HJ, Kim HJ, Anto JM. Spices to Control COVID-19 Symptoms: Yes, but Not Only…. Int Arch Allergy Immunol 2020; 182:489-495. [PMID: 33352565 PMCID: PMC7900475 DOI: 10.1159/000513538] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 11/20/2020] [Indexed: 12/02/2022] Open
Abstract
There are large country variations in COVID-19 death rates that may be partly explained by diet. Many countries with low COVID-19 death rates have a common feature of eating large quantities of fermented vegetables such as cabbage and, in some continents, various spices. Fermented vegetables and spices are agonists of the antioxidant transcription factor nuclear factor (erythroid-derived 2)-like 2 (Nrf2), and spices are transient receptor potential ankyrin 1 and vanillin 1 (TRPA1/V1) agonists. These mechanisms may explain many COVID-19 symptoms and severity. It appears that there is a synergy between Nrf2 and TRPA1/V1 foods that may explain the role of diet in COVID-19. One of the mechanisms of COVID-19 appears to be an oxygen species (ROS)-mediated process in synergy with TRP channels, modulated by Nrf2 pathways. Spicy foods are likely to desensitize TRP channels and act in synergy with exogenous antioxidants that activate the Nrf2 pathway.
Collapse
Affiliation(s)
- Jean Bousquet
- Department of Dermatology and Allergy, Charité Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Comprehensive Allergy Center, Berlin, Germany, .,University hospital and MACVIA France, Montpellier, France,
| | | | - Torsten Zuberbier
- Department of Dermatology and Allergy, Charité Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Comprehensive Allergy Center, Berlin, Germany
| | - Joaquim Mullol
- Rhinology Unit & Smell Clinic, ENT Department, Hospital Clinic-Clinical & Experimental Respiratory Immunoallergy, IDIBAPS, CIBERES, Universitat de Barcelona, Barcelona, Spain
| | - Hubert Blain
- Department of Geriatrics, Montpellier University Hospital, Montpellier, France
| | - Jean-Paul Cristol
- Laboratoire de Biochimie et Hormonologie, PhyMedExp, Université de Montpellier, INSERM, CNRS, CHU de Montpellier, Montpellier, France
| | - Rafael De La Torre
- CIBER Fisiopatologia de la Obesidad y Nutrición (CIBEROBN), Madrid, Spain
| | | | - Nieves Pizarro Lozano
- IMIM (Hospital del Mar Research Institute), Barcelona, Spain.,Autonomous University of Barcelona, Bellaterra, Barcelona, Spain
| | - Anna Bedbrook
- University hospital and MACVIA France, Montpellier, France.,MASK-air, Montpellier, France
| | - Ioana Agache
- Faculty of Medicine, Transylvania University, Brasov, Romania
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich-Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - G Walter Canonica
- Department of Biomedical Sciences, Personalized Medicine, Asthma and Allergy, Humanitas Clinical and Research Center IRCCS, Humanitas University, Pieve Emanuele, Italy
| | - Alvaro A Cruz
- Fundação ProAR, Federal University of Bahia and GARD/WHO Planning Group, Salvador, Brazil
| | - Alessandro Fiocchi
- Division of Allergy, Department of Pediatric Medicine-The Bambino Gesù Children's Research Hospital Holy see, Rome, Italy
| | - Joao A Fonseca
- CINTESIS, Center for Research in Health Technologies and Information Systems, Faculdade de Medicina da Universidade do Porto, Porto, Portugal and MEDIDA, Lda, Porto, Portugal
| | - Susana Fonseca
- GreenUPorto-Sustainable Agrifood Production Research Centre, DGAOT, Faculty of Sciences, University of Porto, Campus de Vairão, Vila do Conde, Portugal
| | - Bilun Gemicioğlu
- Department of Pulmonary Diseases, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - Guido Iaccarino
- Department of Advanced Biomedical Sciences, Federico II University, Napoli, Italy.,Interdepartmental Center of Research on Hypertension and Related Conditions CIRIAPA, Federico II University, Napoli, Italy
| | | | - Marek Jutel
- Department of Clinical Immunology, Wrocław Medical University and ALL-MED Medical Research Institute, Wrocław, Poland
| | - Ludger Klimek
- Center for Rhinology and Allergology, Wiesbaden, Germany
| | - Piotr Kuna
- Division of Internal Medicine, Asthma and Allergy, Barlicki University Hospital, Medical University of Lodz, Lodz, Poland
| | - Désirée E Larenas-Linnemann
- Center of Excellence in Asthma and Allergy, Médica Sur Clinical Foundation and Hospital, Mexico City, Mexico
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet and Sachs' Children's Hospital, Stockholm, Sweden
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology, Chiba University Hospital, Chiba, Japan
| | - Nikolaos G Papadopoulos
- Division of Infection, Allergy Department, Immunity & Respiratory Medicine, Royal Manchester Children's Hospital, University of Manchester, Manchester, United Kingdom.,2nd Pediatric Clinic, Athens General Children's Hospital "P&A Kyriakou," University of Athens, Athens, Greece
| | - Oliver Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Rhinology and Allergy, University Hospital Marburg, Philipps-Universität Marburg, Marburg, Germany
| | - Jacques Reynes
- Maladies Infectieuses et Tropicales, CHU, Montpellier, France
| | | | - Philip W Rouadi
- Department of Otolaryngology-Head and Neck Surgery, Eye and Ear University Hospital, Beirut, Lebanon
| | - Boleslaw Samolinski
- Department of Prevention of Environmental Hazards and Allergology, Medical University of Warsaw, Warsaw, Poland
| | - Aziz Sheikh
- The Usher Institute of Population Health Sciences and Informatics, The University of Edinburgh, Edinburgh, United Kingdom
| | - Sanna Toppila-Salmi
- Skin and Allergy Hospital, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - Arunas Valiulis
- Vilnius University Faculty of Medicine, Institute of Clinical Medicine & Institute of Health Sciences, Vilnius, Lithuania
| | - Hak-Jong Choi
- Microbiology and Functionality Research Group, Research and Development Division, World Institute of Kimchi, Gwangju, Republic of Korea
| | - Hyun Ju Kim
- SME Service Department, Strategy and Planning Division, World Institute of Kimchi, Gwangju, Republic of Korea
| | - Josep M Anto
- IMIM (Hospital del Mar Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,ISGlobAL, Barcelona, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
| |
Collapse
|
46
|
Fischer MJM, Ciotu CI, Szallasi A. The Mysteries of Capsaicin-Sensitive Afferents. Front Physiol 2020; 11:554195. [PMID: 33391007 PMCID: PMC7772409 DOI: 10.3389/fphys.2020.554195] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 11/13/2020] [Indexed: 12/11/2022] Open
Abstract
A fundamental subdivision of nociceptive sensory neurons is named after their unique sensitivity to capsaicin, the pungent ingredient in hot chili peppers: these are the capsaicin-sensitive afferents. The initial excitation by capsaicin of these neurons manifested as burning pain sensation is followed by a lasting refractory state, traditionally referred to as "capsaicin desensitization," during which the previously excited neurons are unresponsive not only to capsaicin but a variety of unrelated stimuli including noxious heat. The long sought-after capsaicin receptor, now known as TRPV1 (transient receptor potential cation channel, subfamily V member 1), was cloned more than two decades ago. The substantial reduction of the inflammatory phenotype of Trpv1 knockout mice has spurred extensive efforts in the pharmaceutical industry to develop small molecule TRPV1 antagonists. However, adverse effects, most importantly hyperthermia and burn injuries, have so far prevented any compounds from progressing beyond Phase 2. There is increasing evidence that these limitations can be at least partially overcome by approaches outside of the mainstream pharmaceutical development, providing novel therapeutic options through TRPV1. Although ablation of the whole TRPV1-expressing nerve population by high dose capsaicin, or more selectively by intersectional genetics, has allowed researchers to investigate the functions of capsaicin-sensitive afferents in health and disease, several "mysteries" remain unsolved to date, including the molecular underpinnings of "capsaicin desensitization," and the exact role these nerves play in thermoregulation and heat sensation. This review tries to shed some light on these capsaicin mechanisms.
Collapse
Affiliation(s)
- Michael J. M. Fischer
- Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Cosmin I. Ciotu
- Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Arpad Szallasi
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| |
Collapse
|
47
|
Juárez-Contreras R, Méndez-Reséndiz KA, Rosenbaum T, González-Ramírez R, Morales-Lázaro SL. TRPV1 Channel: A Noxious Signal Transducer That Affects Mitochondrial Function. Int J Mol Sci 2020; 21:ijms21238882. [PMID: 33255148 PMCID: PMC7734572 DOI: 10.3390/ijms21238882] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/24/2020] [Accepted: 10/31/2020] [Indexed: 12/19/2022] Open
Abstract
The Transient Receptor Vanilloid 1 (TRPV1) or capsaicin receptor is a nonselective cation channel, which is abundantly expressed in nociceptors. This channel is an important transducer of several noxious stimuli, having a pivotal role in pain development. Several TRPV1 studies have focused on understanding its structure and function, as well as on the identification of compounds that regulate its activity. The intracellular roles of these channels have also been explored, highlighting TRPV1′s actions in the homeostasis of Ca2+ in organelles such as the mitochondria. These studies have evidenced how the activation of TRPV1 affects mitochondrial functions and how this organelle can regulate TRPV1-mediated nociception. The close relationship between this channel and mitochondria has been determined in neuronal and non-neuronal cells, demonstrating that TRPV1 activation strongly impacts on cell physiology. This review focuses on describing experimental evidence showing that TRPV1 influences mitochondrial function.
Collapse
Affiliation(s)
- Rebeca Juárez-Contreras
- Department of Cognitive Neuroscience, Neurosciences Division, Institute of Cellular Physiology, National Autonomous University of Mexico, UNAM, Mexico City 04510, Mexico; (R.J.-C.); (K.A.M.-R.); (T.R.)
| | - Karina Angélica Méndez-Reséndiz
- Department of Cognitive Neuroscience, Neurosciences Division, Institute of Cellular Physiology, National Autonomous University of Mexico, UNAM, Mexico City 04510, Mexico; (R.J.-C.); (K.A.M.-R.); (T.R.)
| | - Tamara Rosenbaum
- Department of Cognitive Neuroscience, Neurosciences Division, Institute of Cellular Physiology, National Autonomous University of Mexico, UNAM, Mexico City 04510, Mexico; (R.J.-C.); (K.A.M.-R.); (T.R.)
| | - Ricardo González-Ramírez
- Department of Molecular Biology and Histocompatibility, “Dr. Manuel Gea González” General Hospital, Mexico City 14080, Mexico;
| | - Sara Luz Morales-Lázaro
- Department of Cognitive Neuroscience, Neurosciences Division, Institute of Cellular Physiology, National Autonomous University of Mexico, UNAM, Mexico City 04510, Mexico; (R.J.-C.); (K.A.M.-R.); (T.R.)
- Correspondence:
| |
Collapse
|
48
|
Modulation of TRPV1 channel function by natural products in the treatment of pain. Chem Biol Interact 2020; 330:109178. [DOI: 10.1016/j.cbi.2020.109178] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/22/2020] [Accepted: 06/09/2020] [Indexed: 01/01/2023]
|
49
|
Fernández-Carvajal A, González-Muñiz R, Fernández-Ballester G, Ferrer-Montiel A. Investigational drugs in early phase clinical trials targeting thermotransient receptor potential (thermoTRP) channels. Expert Opin Investig Drugs 2020; 29:1209-1222. [PMID: 32941080 DOI: 10.1080/13543784.2020.1825680] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Thermo transient receptor potential (thermoTRP) channels are some of the most intensely pursued therapeutic targets of the past decade. They are considered promising targets of numerous diseases including chronic pain and cancer. Modulators of these proteins, in particular TRPV1-4, TRPM8 and TRPA1, have reached clinical development, but none has been approved for clinical practice yet. AREAS COVERED The therapeutic potential of targeting thermoTRP channels is discussed. The discussion is centered on our experience and on available data found in SciFinder, PubMed, and ClinicalTrials.gov database from the past decade. This review focuses on the therapeutic progress concerning this family of channels, including strategies to improve their therapeutic index for overcoming adverse effects. EXPERT OPINION Although thermoTRPs are pivotal drug targets, translation to the clinic has faced two key problems, (i) unforeseen side effects in Phase I trials and, (ii) poor clinical efficacy in Phase II trials. Thus, there is a need for (i) an enhanced understanding of the physiological role of these channels in tissues and organs and (ii) the development of human-based pre-clinical models with higher clinical translation. Furthermore, progress in nanotechnology-based delivery strategies will positively impact thermoTRP human pharmacology.
Collapse
Affiliation(s)
- Asia Fernández-Carvajal
- Instituto De Investigación, Desarrollo E Innovación En Biotecnología Sanitaria De Elche (Idibe), Universitas Miguel Hernández , Alicante, Spain
| | | | - Gregorio Fernández-Ballester
- Instituto De Investigación, Desarrollo E Innovación En Biotecnología Sanitaria De Elche (Idibe), Universitas Miguel Hernández , Alicante, Spain
| | - Antonio Ferrer-Montiel
- Instituto De Investigación, Desarrollo E Innovación En Biotecnología Sanitaria De Elche (Idibe), Universitas Miguel Hernández , Alicante, Spain
| |
Collapse
|
50
|
Berry DN, Simons CT. Do Caucasian American and South Asian Indian cultural groups differ in sensitivity to capsaicin? A study designed to control for chili pepper affinity. J Food Sci 2020; 85:2896-2901. [PMID: 32794204 DOI: 10.1111/1750-3841.15369] [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: 03/06/2020] [Revised: 06/24/2020] [Accepted: 06/30/2020] [Indexed: 11/29/2022]
Abstract
Although different cultural groups are known to vary in their tolerance for hot chili peppers, the influence of factors such as cultural background and upbringing on sensitivity to compounds in spicy food is unclear. A study was designed to investigate sensitivity differences to capsaicin between Caucasian American and South Asian Indian cultural groups while controlling for general chili pepper affinity. The two cultural groups were selected to match on metrics related to chili pepper use and liking. Subjects were exposed to a capsaicin (100 ppm) stimulus on the tongue, cheek, hard palate, and lip and rated the intensity of irritation every 30 s, over a 10-min period. Overall sensitivity to capsaicin in the oral cavity did not differ between the groups, nor were responses different between the groups depending on the oral cavity area stimulated. These data suggest a limited role of cultural attributes on capsaicin sensitivity between Caucasian Americans and South Asian Indians. The methods and findings here provide subject recruitment insight and guidance on effectively designing a sensory study to answer perceptual questions regarding specific subject groups. PRACTICAL APPLICATION: This study design provides a model for researchers interested in utilizing sensory testing to answer questions about subject groups. Although the objective of this study regarded sensitivity differences across two cultural groups, alterations in the subject matching process used presently could be easily implemented to investigate sensitivity across other differing subject characteristics of interest.
Collapse
Affiliation(s)
- Danica N Berry
- Department of Food Science & Technology, The Ohio State University, 2015 Fyffe Rd, Columbus, OH, 43210, U.S.A
| | - Christopher T Simons
- Department of Food Science & Technology, The Ohio State University, 2015 Fyffe Rd, Columbus, OH, 43210, U.S.A
| |
Collapse
|