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Wu J, Li Z, Deng Y, Lu X, Luo C, Mu X, Zhang T, Liu Q, Tang S, Li J, An Q, Fan D, Xiang Y, Wu X, Hu Y, Du Q, Xu J, Xie R. Function of TRP channels in monocytes/macrophages. Front Immunol 2023; 14:1187890. [PMID: 37404813 PMCID: PMC10315479 DOI: 10.3389/fimmu.2023.1187890] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 06/02/2023] [Indexed: 07/06/2023] Open
Abstract
The transient receptor potential channel (TRP channel) family is a kind of non- specific cation channel widely distributed in various tissues and organs of the human body, including the respiratory system, cardiovascular system, immune system, etc. It has been reported that various TRP channels are expressed in mammalian macrophages. TRP channels may be involved in various signaling pathways in the development of various systemic diseases through changes in intracellular concentrations of cations such as calcium and magnesium. These TRP channels may also intermingle with macrophage activation signals to jointly regulate the occurrence and development of diseases. Here, we summarize recent findings on the expression and function of TRP channels in macrophages and discuss their role as modulators of macrophage activation and function. As research on TRP channels in health and disease progresses, it is anticipated that positive or negative modulators of TRP channels for treating specific diseases may be promising therapeutic options for the prevention and/or treatment of disease.
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Affiliation(s)
- Jiangbo Wu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Zhuo Li
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Ya Deng
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Xianmin Lu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Chen Luo
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Xingyi Mu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Ting Zhang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Qi Liu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Siqi Tang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Jiajing Li
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Qimin An
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Dongdong Fan
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Yiwei Xiang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Xianli Wu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Yanxia Hu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Qian Du
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Jingyu Xu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Rui Xie
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
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Ando C, Ma S, Miyoshi M, Furukawa K, Li X, Jia H, Kato H. Postnatal nutrition environment reprograms renal DNA methylation patterns in offspring of maternal protein-restricted stroke-prone spontaneously hypertensive rats. Front Nutr 2023; 10:1134955. [PMID: 37125041 PMCID: PMC10133489 DOI: 10.3389/fnut.2023.1134955] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/20/2023] [Indexed: 05/02/2023] Open
Abstract
Maternal malnutrition hampers the offspring health by manipulating the epigenome. Recent studies indicate that the changes in DNA methylation could be reversed by afterbirth nutrition supplementation. In this study, we used DNA methylation arrays to comprehensively investigate the DNA methylation status of the renal promoter regions and the effects of postnatal protein intake on DNA methylation. We fed stroke-prone spontaneously hypertensive (SHRSP) rat dams a normal diet or a low-protein diet during pregnancy, and their 4-week-old male offspring were fed a normal diet or a high-/low-protein diet for 2 weeks. We found that the methylation status of 2,395 differentially methylated DNA regions was reprogrammed, and 34 genes were reset by different levels of postnatal protein intake in the offspring. Among these genes, Adora2b, Trpc5, Ar, Xrcc2, and Atp1b1 are involved in renal disease and blood pressure regulation. Our findings indicate that postnatal nutritional interventions can potentially reprogram epigenetic changes, providing novel therapeutic and preventive epigenetic targets for salt-sensitive hypertension.
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Affiliation(s)
- Chika Ando
- Health Nutrition, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Sihui Ma
- Health Nutrition, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan
| | - Moe Miyoshi
- Health Nutrition, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kyohei Furukawa
- Health Nutrition, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- Animal Nutrition, Life Sciences, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Xuguang Li
- Health Nutrition, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Huijuan Jia
- Health Nutrition, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- *Correspondence: Huijuan Jia,
| | - Hisanori Kato
- Health Nutrition, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- Hisanori Kato,
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TRPC5 mediates endothelium-dependent contraction in the carotid artery of diet-induced obese mice. Hypertens Res 2022; 45:1945-1953. [PMID: 36123395 DOI: 10.1038/s41440-022-01017-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 07/06/2022] [Accepted: 07/21/2022] [Indexed: 11/08/2022]
Abstract
Little is known about the contribution of the transient receptor potential canonical channel isoform 5 (TRPC5), a Ca2+-sensitive channel, to vasoconstriction in obesity. In this study, we found that the TRPC5 expression and carotid artery contraction of diet-induced obese (DIO) mice were significantly higher than those of wild-type mice. Endothelium-dependent vasocontraction was inhibited by the TRPC5 inhibitor clemizole and the knockout of TRPC5 in DIO mouse carotid arteries, while activation of TRPC5 enhanced contraction in wild-type mice. TRPC5-regulated vasocontraction can be inhibited by the ROS scavenger NAC and the COX-2 inhibitor NS-398. Our study suggested that upregulation of TRPC5 contributes to endothelium-dependent contraction, which is involved in ROS production and COX-2 expression in DIO mouse carotid arteries. From these results, we speculated that TRPC5 mediated endothelium-dependent contraction in the carotid artery of DIO mice, which was achieved by increasing the levels of ROS and COX-2 expression.
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Guedes M, Guetter CR, Erbano LHO, Palone AG, Zee J, Robinson BM, Pisoni R, de Moraes TP, Pecoits-Filho R, Baena CP. Physical health-related quality of life at higher achieved hemoglobin levels among chronic kidney disease patients: a systematic review and meta-analysis. BMC Nephrol 2020; 21:259. [PMID: 32641153 PMCID: PMC7346455 DOI: 10.1186/s12882-020-01912-8] [Citation(s) in RCA: 4] [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: 02/10/2020] [Accepted: 06/26/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The impact of anemia treatment with erythropoietin stimulating agents (ESA) on health-related quality of life (HRQOL) in chronic kidney disease (CKD) patients is controversial, particularly regarding optimal hemoglobin (Hb) target ranges. METHODS We conducted a systematic review and meta-analysis of observational studies and randomized controlled trials (RCT) with ESA to estimate the effect of different achieved Hb values on physical HRQOL and functionality. We searched PubMed, EMBASE, CENTRAL, PEDro, PsycINFO and Web of Science databases, until May 2020. Two authors independently extracted data from studies. We included observational and RCTs that enrolled CKD patients undergoing anemia treatment with ESA with different achieved Hb levels among groups. We excluded studies with achieved Hb < 9 g/dL. For the meta-analysis, we included RCTs with control groups achieving Hb 10-11.5 g/dL and active groups with Hb > 11.5 g/dL. We analyzed the standardized mean difference (SMD) between groups for physical HRQOL. RESULTS Among 8496 studies, fifteen RCTs and five observational studies were included for the systematic review. We performed the meta-analysis in a subset of eleven eligible RCTs. For physical role and physical function, SMDs were 0.0875 [95% CI: - 0.0025 - 0.178] and 0.08 [95% CI: - 0.03 - 0.19], respectively. For fatigue, SMD was 0.16 [95% CI: 0.09-0.24]. Subgroup analysis showed that trials with greater achieved Hb had greater pooled effects sizes - 0.21 [95% CI: 0.07-0.36] for Hb > 13 g/dL vs. 0.09 [95% CI: 0.02-0.16] for Hb 11.5-13 g/dL. Proportion of older and long-term diabetic patients across studies were associated with lower effect sizes. CONCLUSION Achieved hemoglobin higher than currently recommended targets may be associated with small but potentially clinically significant improvement in fatigue, but not in physical role or physical function. Younger and non-diabetic patients may experience more pronounced benefits of higher Hb levels after treatment with ESAs.
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Affiliation(s)
- Murilo Guedes
- Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil.
| | | | - Lucas H O Erbano
- Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
| | - Andre G Palone
- Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
| | - Jarcy Zee
- Arbor Research Collaborative for Health, Ann Arbor, MI, USA
| | | | - Ronald Pisoni
- Arbor Research Collaborative for Health, Ann Arbor, MI, USA
| | - Thyago Proença de Moraes
- Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
| | - Roberto Pecoits-Filho
- Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
- Arbor Research Collaborative for Health, Ann Arbor, MI, USA
| | - Cristina P Baena
- Pontifícia Universidade Católica do Paraná, Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
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Ayer A, Mills C, Donovan C, Christenson RH, Ganz P, Dubin RF. Associations of microvascular dysfunction with cardiovascular outcomes: The cardiac, endothelial function and arterial stiffness in ESRD (CERES) cohort. Hemodial Int 2019; 23:58-68. [DOI: 10.1111/hdi.12675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/08/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Amrita Ayer
- Division of Nephrology, San Francisco VA Medical CenterUniversity of California San Francisco California USA
| | - Claire Mills
- Division of Cardiology, Center for Vascular Excellence, Zuckerberg San Francisco General HospitalUniversity of California San Francisco California USA
| | - Catherine Donovan
- Division of Cardiology, Center for Vascular Excellence, Zuckerberg San Francisco General HospitalUniversity of California San Francisco California USA
| | - Robert H. Christenson
- Department of PathologyUniversity of Maryland School of Medicine Baltimore Maryland USA
| | - Peter Ganz
- Division of Cardiology, Center for Vascular Excellence, Zuckerberg San Francisco General HospitalUniversity of California San Francisco California USA
| | - Ruth F. Dubin
- Division of Nephrology, San Francisco VA Medical CenterUniversity of California San Francisco California USA
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Kilar CR, Diao Y, Sautina L, Sekharan S, Keinan S, Carpino B, Conrad KP, Mohandas R, Segal MS. Activation of the β-common receptor by erythropoietin impairs acetylcholine-mediated vasodilation in mouse mesenteric arterioles. Physiol Rep 2018; 6:e13751. [PMID: 29939494 PMCID: PMC6016622 DOI: 10.14814/phy2.13751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/26/2018] [Accepted: 05/29/2018] [Indexed: 12/16/2022] Open
Abstract
Clinically, erythropoietin (EPO) is known to increase systemic vascular resistance and arterial blood pressure. However, EPO stimulates the production of the potent vasodilator, nitric oxide (NO), in culture endothelial cells. The mechanism by which EPO causes vasoconstriction despite stimulating NO production may be dependent on its ability to activate two receptor complexes, the homodimeric EPO (EPOR2 ) and the heterodimeric EPOR/β-common receptor (βCR). The purpose of this study was to investigate the contribution of each receptor to the vasoactive properties of EPO. First-order, mesenteric arteries were isolated from 16-week-old male C57BL/6 mice, and arterial function was studied in pressure arteriographs. To determine the contribution of each receptor complex, EPO-stimulating peptide (ESP), which binds and activates the heterodimeric EPOR/βCR complex, and EPO, which activates both receptors, were added to the arteriograph chamber 20 min prior to evaluation of endothelium-dependent (acetylcholine, bradykinin, A23187) and endothelium-independent (sodium nitroprusside) vasodilator responses. Only ACh-induced vasodilation was impaired in arteries pretreated with EPO or ESP. EPO and ESP pretreatment abolished ACh-induced vasodilation by 100% and 60%, respectively. EPO and ESP did not affect endothelium-independent vasodilation by SNP. Additionally, a novel βCR inhibitory peptide (βIP), which was computationally developed, prevented the impairment of acetylcholine-induced vasodilation by EPO and ESP, further implicating the EPOR/βCR complex. Last, pretreatment with either EPO or ESP did not affect vasoconstriction by phenylephrine and KCl. Taken together, these findings suggest that acute activation of the heterodimeric EPOR/βCR in endothelial cells leads to a selective impairment of ACh-mediated vasodilator response in mouse mesenteric resistance arteries.
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Affiliation(s)
- Cody R. Kilar
- Division of NephrologyHypertension, and TransplantationCollege of MedicineUniversity of FloridaGainesvilleFlorida
| | - YanPeng Diao
- Division of NephrologyHypertension, and TransplantationCollege of MedicineUniversity of FloridaGainesvilleFlorida
| | - Larysa Sautina
- Division of NephrologyHypertension, and TransplantationCollege of MedicineUniversity of FloridaGainesvilleFlorida
| | - Sivakumar Sekharan
- Cloud PharmaceuticalsInc. 6 Davis DrResearch Triangle ParkNorth Carolina
- Present address:
The Cambridge Crystallographic Data Centre174 Frelinghuysen RoadPiscatawayNew Jersey08854
| | - Shahar Keinan
- Cloud PharmaceuticalsInc. 6 Davis DrResearch Triangle ParkNorth Carolina
| | - Bianca Carpino
- Division of NephrologyHypertension, and TransplantationCollege of MedicineUniversity of FloridaGainesvilleFlorida
| | - Kirk P. Conrad
- Department of Physiology and Functional GenomicsCollege of MedicineUniversity of FloridaGainesvilleFlorida
- Department of Obstetrics and GynecologyCollege of MedicineUniversity of FloridaGainesvilleFlorida
| | - Rajesh Mohandas
- Division of NephrologyHypertension, and TransplantationCollege of MedicineUniversity of FloridaGainesvilleFlorida
- North Florida/South Georgia Veterans Health SystemGainesvilleFlorida
| | - Mark S. Segal
- Division of NephrologyHypertension, and TransplantationCollege of MedicineUniversity of FloridaGainesvilleFlorida
- North Florida/South Georgia Veterans Health SystemGainesvilleFlorida
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Zhang P, Liu X, Li H, Chen Z, Yao X, Jin J, Ma X. TRPC5-induced autophagy promotes drug resistance in breast carcinoma via CaMKKβ/AMPKα/mTOR pathway. Sci Rep 2017; 7:3158. [PMID: 28600513 PMCID: PMC5466655 DOI: 10.1038/s41598-017-03230-w] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/24/2017] [Indexed: 12/19/2022] Open
Abstract
Adriamycin is a first-line chemotherapy agent against cancer, but the development of resistance has become a major problem. Although autophagy is considered to be an adaptive survival response in response to chemotherapy and may be associated with chemoresistance, its inducer and the underlying molecular mechanisms remain unclear. Here, we demonstrate that adriamycin up-regulates the both levels of TRPC5 and autophagy, and the increase in autophagy is mediated by TRPC5 in breast cancer cells. Blockade of TRPC5 or autophagy increased the sensitivity to chemotherapy in vitro and in vivo. Notably, we revealed a positive correlation between TRPC5 and the autophagy-associated protein LC3 in paired patients with or without anthracycline-taxane-based chemotherapy. Furthermore, pharmacological inhibition and gene-silencing showed that the cytoprotective autophagy mediated by TRPC5 during adriamycin treatment is dependent on the CaMKKβ/AMPKα/mTOR pathway. Moreover, adriamycin-resistant MCF-7/ADM cells maintained a high basal level of autophagy, and silencing of TRPC5 and inhibition of autophagy counteracted the resistance to adriamycin. Thus, our results revealed a novel role of TRPC5 as an inducer of autophagy, and this suggests a novel mechanism of drug resistance in chemotherapy for breast cancer.
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Affiliation(s)
- Peng Zhang
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Xiaoyu Liu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Hongjuan Li
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, China
| | - Zhen Chen
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, China
| | - Xiaoqiang Yao
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jian Jin
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, China.
| | - Xin Ma
- Wuxi School of Medicine, Jiangnan University, Wuxi, China.
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Böhlke M, Giesteira R, Castilho C, Pinheiro B, Irigoyen MC, Poli de Figueiredo CE. Acetylsalicylic acid mitigates erythropoietin-associated blood pressure increase in nonuremic rats. Clin Exp Hypertens 2014; 37:235-40. [PMID: 25314608 DOI: 10.3109/10641963.2014.943403] [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: 11/13/2022]
Abstract
BACKGROUND Approximately 30% of the chronic kidney disease patients using recombinant human erythropoietin (rhuEPO) have an increase in blood pressure (BP). Its mechanism and whether it depends on renal function remain unclear. There is early evidence that acetylsalicylic acid (ASA) prevents the rhuEPO-induced increase in BP. This study aims to verify whether very high doses of rhuEPO can increase BP in nonuremic rats and whether the co-administration of ASA can prevent it. METHODS Forty male Wistar rats were divided into four groups: placebo/placebo; placebo/rhuEPO 200 UI/kg thrice weekly; placebo/ASA 50 mg/kg daily; rhuEPO 200 UI/kg thrice weekly/ASA 50 mg/kg daily. Hematocrit was measured before and after and systolic BP was measured weekly by tail-cuff technique. Direct measurement of the BP was obtained at the end. RESULTS The rhuEPO groups had higher final hematocrit (rhuEPO/placebo 56.7 ± 7.6, rhuEPO/ASA 56.7 ± 7.7; p < 0.001 versus placebo/placebo, 42.2 ± 4.7 and ASA/placebo 41.2 ± 4.2); and also increase in systolic BP (rhuEPO/placebo 135.1 ± 15.0, p = 0.01 and rhuEPO/ASA 127.2 ± 6.8, p = 0.02), whereas BP in rats from placebo/placebo (120.9 ± 5.0, p = 0.18) and placebo/ASA (124.6 ± 13.3, p = 0.12) groups remained unchanged. By direct measurement, the final BP was higher in rhuEPO/placebo (DBP 123.1 ± 12.0; SBP 157.4 ± 12.5; MBP 139.8 ± 11.9) than placebo/placebo (DBP 105.1 ± 11.5; SBP 141.0 ± 12.6; MBP 122.1 ± 12.1) and placebo/ASA groups (DBP 106.6 ± 8.1; SBP 141.5 ± 8.4, MBP 122.1 ± 7.2) (p < 0.05 by post hoc Bonferroni test ANOVA). The rhuEPO/ASA group (PAD 115.1 ± 11.4, PAS 147.4 ± 9.1, MBP 130.1 ± 10.3) was not different from other groups. CONCLUSIONS The administration of very high doses of rhuEPO is associated with an increase in hematocrit and BP in nonuremic rats. The concomitant use of ASA mitigates the rhuEPO-associated BP increase.
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Affiliation(s)
- Maristela Böhlke
- Clinical Investigation Center, Pontificia Universidade Católica do Rio Grande do Sul , Porto Alegre , Brazil
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9
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Nilius B, Szallasi A. Transient Receptor Potential Channels as Drug Targets: From the Science of Basic Research to the Art of Medicine. Pharmacol Rev 2014; 66:676-814. [DOI: 10.1124/pr.113.008268] [Citation(s) in RCA: 348] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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10
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Hung SC, Lin YP, Tarng DC. Erythropoiesis-stimulating agents in chronic kidney disease: what have we learned in 25 years? J Formos Med Assoc 2013; 113:3-10. [PMID: 24090633 DOI: 10.1016/j.jfma.2013.09.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 08/22/2013] [Accepted: 09/02/2013] [Indexed: 10/26/2022] Open
Abstract
Since the pioneering studies by Eschbach et al in 1987, erythropoiesis-stimulating agents (ESAs) have become the mainstay of anemia therapy in chronic kidney disease (CKD) patients. The introduction of ESAs 25 years ago markedly improved the lives of many patients with CKD, who until then had severe, often transfusion-dependent anemia. However, randomized controlled trials demonstrate an increased risk for cardiovascular events such as stroke, thrombosis, and death at nearly normal hemoglobin concentrations and higher ESA doses in CKD. By contrast, kidney transplant recipients may represent a unique population of CKD patients who may benefit from ESA therapy. This review discusses potential mechanisms involving the erythropoietic and nonerythropoietic effects of ESA treatment and ESA resistance. Further research aimed at elucidating the causal pathways is strongly recommended. Given current knowledge, however, clinical practice should avoid disproportionately high dosages of ESAs to achieve recommended hemoglobin targets, particularly in those with significant cardiovascular morbidity or ESA resistance. The key to CKD anemia management will be individualization of the potential benefits of reducing blood transfusions and anemia-related symptoms against the risks of harm.
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Affiliation(s)
- Szu-Chun Hung
- Division of Nephrology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation and Buddhist Tzu Chi University, Taipei, Taiwan
| | - Yao-Ping Lin
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Der-Cherng Tarng
- Division of Nephrology, Department of Medicine, and Immunology Research Center, Taipei Veterans General Hospital, Taipei, Taiwan; Department and Institute of Physiology, National Yang-Ming University, Taipei, Taiwan.
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Tano JYK, Lee RH, Vazquez G. Macrophage function in atherosclerosis: potential roles of TRP channels. Channels (Austin) 2012; 6:141-8. [PMID: 22909953 DOI: 10.4161/chan.20292] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Cation channels of the Transient Receptor Potential Canonical (TRPC) group, which belong to the larger TRP superfamily of channel proteins, are critical players in cardiovascular disease. Recent studies underscored a role of TRPC3 in macrophage survival and efferocytosis, two critical events in atherosclerosis lesion development. Also, other members of the TRP channel superfamily are found expressed in monocytes/macrophages, where they participate in processes that might be of significance to atherogenesis. These observations set a framework for future studies aimed at defining the ultimate functions not only of TRPC3, but probably other TRP channels, in macrophage biology. The purpose of this manuscript is to provide a timely revision of existing evidence on the role of members of the TRP channel superfamily, in particular TRPCs, in macrophages and discuss it in the context of the macrophage's function in atherogenesis.
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Affiliation(s)
- Jean-Yves K Tano
- Department of Physiology and Pharmacology, University of Toledo College of Medicine, Health Science Campus, OH, USA
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12
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Moccia F, Berra-Romani R, Tanzi F. Update on vascular endothelial Ca 2+ signalling: A tale of ion channels, pumps and transporters. World J Biol Chem 2012; 3:127-58. [PMID: 22905291 PMCID: PMC3421132 DOI: 10.4331/wjbc.v3.i7.127] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 07/04/2012] [Accepted: 07/11/2012] [Indexed: 02/05/2023] Open
Abstract
A monolayer of endothelial cells (ECs) lines the lumen of blood vessels and forms a multifunctional transducing organ that mediates a plethora of cardiovascular processes. The activation of ECs from as state of quiescence is, therefore, regarded among the early events leading to the onset and progression of potentially lethal diseases, such as hypertension, myocardial infarction, brain stroke, and tumor. Intracellular Ca2+ signals have long been know to play a central role in the complex network of signaling pathways regulating the endothelial functions. Notably, recent work has outlined how any change in the pattern of expression of endothelial channels, transporters and pumps involved in the modulation of intracellular Ca2+ levels may dramatically affect whole body homeostasis. Vascular ECs may react to both mechanical and chemical stimuli by generating a variety of intracellular Ca2+ signals, ranging from brief, localized Ca2+ pulses to prolonged Ca2+ oscillations engulfing the whole cytoplasm. The well-defined spatiotemporal profile of the subcellular Ca2+ signals elicited in ECs by specific extracellular inputs depends on the interaction between Ca2+ releasing channels, which are located both on the plasma membrane and in a number of intracellular organelles, and Ca2+ removing systems. The present article aims to summarize both the past and recent literature in the field to provide a clear-cut picture of our current knowledge on the molecular nature and the role played by the components of the Ca2+ machinery in vascular ECs under both physiological and pathological conditions.
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Affiliation(s)
- Francesco Moccia
- Francesco Moccia, Franco Tanzi, Department of Biology and Biotechnologies "Lazzaro Spallanzani", Laboratory of Physiology, University of Pavia, Via Forlanini 6, 27100 Pavia, Italy
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Thilo F, Vorderwülbecke BJ, Marki A, Krueger K, Liu Y, Baumunk D, Zakrzewicz A, Tepel M. Pulsatile Atheroprone Shear Stress Affects the Expression of Transient Receptor Potential Channels in Human Endothelial Cells. Hypertension 2012; 59:1232-40. [DOI: 10.1161/hypertensionaha.111.183608] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Florian Thilo
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
| | - Bernd J. Vorderwülbecke
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
| | - Alex Marki
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
| | - Katharina Krueger
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
| | - Ying Liu
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
| | - Daniel Baumunk
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
| | - Andreas Zakrzewicz
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
| | - Martin Tepel
- From the Department of Nephrology (F.T., K.K.) and Shear Stress and Vascular Biology Research Group, Institute of Physiology (B.J.V., A.M., A.Z.), Charité Campus Benjamin Franklin, Berlin, Germany; Institute of Molecular Medicine, Cardiovascular and Renal Research (Y.L., M.T.), Institute of Clinical Research, Odense University Hospital and University of Southern Denmark, Odense, Denmark; Department of Urology (Y.L.), Tenth People's Hospital, Tongji University, Shanghai, China; Department of Urology
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