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Lai J, Liu Y, Lu G, Yung P, Wang X, Tuan RS, Li ZA. 4D bioprinting of programmed dynamic tissues. Bioact Mater 2024; 37:348-377. [PMID: 38694766 PMCID: PMC11061618 DOI: 10.1016/j.bioactmat.2024.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 03/12/2024] [Accepted: 03/28/2024] [Indexed: 05/04/2024] Open
Abstract
Setting time as the fourth dimension, 4D printing allows us to construct dynamic structures that can change their shape, property, or functionality over time under stimuli, leading to a wave of innovations in various fields. Recently, 4D printing of smart biomaterials, biological components, and living cells into dynamic living 3D constructs with 4D effects has led to an exciting field of 4D bioprinting. 4D bioprinting has gained increasing attention and is being applied to create programmed and dynamic cell-laden constructs such as bone, cartilage, and vasculature. This review presents an overview on 4D bioprinting for engineering dynamic tissues and organs, followed by a discussion on the approaches, bioprinting technologies, smart biomaterials and smart design, bioink requirements, and applications. While much progress has been achieved, 4D bioprinting as a complex process is facing challenges that need to be addressed by transdisciplinary strategies to unleash the full potential of this advanced biofabrication technology. Finally, we present future perspectives on the rapidly evolving field of 4D bioprinting, in view of its potential, increasingly important roles in the development of advanced dynamic tissues for basic research, pharmaceutics, and regenerative medicine.
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Affiliation(s)
- Jiahui Lai
- Department of Biomedical Engineering, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, NT, Hong Kong SAR, China
| | - Yuwei Liu
- Department of Biomedical Engineering, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
- The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
| | - Gang Lu
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, NT, Hong Kong SAR, China
- School of Biomedical Sciences, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
| | - Patrick Yung
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, NT, Hong Kong SAR, China
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
| | - Xiaoying Wang
- State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou, 510640, China
| | - Rocky S. Tuan
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, NT, Hong Kong SAR, China
- School of Biomedical Sciences, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
| | - Zhong Alan Li
- Department of Biomedical Engineering, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, NT, Hong Kong SAR, China
- School of Biomedical Sciences, The Chinese University of Hong Kong, NT, Hong Kong SAR, China
- Key Laboratory of Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
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Vaghiri S, Prassas D, David SO, Knoefel WT, Krieg A. Caffeine intake enhances bowel recovery after colorectal surgery: a meta-analysis of randomized and non-randomized studies. Updates Surg 2024; 76:769-782. [PMID: 38700642 PMCID: PMC11129976 DOI: 10.1007/s13304-024-01847-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 04/12/2024] [Indexed: 05/28/2024]
Abstract
Postoperative ileus (POI) after colorectal surgery is a major problem that affects both patient recovery and hospital costs highlighting the importance of preventive strategies. Therefore, we aimed to perform a systematic analysis of the effects of postoperative caffeine consumption on bowel recovery and surgical morbidity after colorectal surgery. A comprehensive literature search was conducted through September 2023 for randomized and non-randomized trials comparing the effect of caffeinated versus non-caffeinated drinks on POI by evaluating bowel movement resumption, time to first flatus and solid food intake, and length of hospital stay (LOS). Secondary outcome analysis included postoperative morbidity in both groups. After data extraction and inclusion in a meta-analysis, odds ratios (ORs) for dichotomous variables and standardized mean differences (SMDs) for continuous outcomes with 95% confidence intervals (CIs) were calculated. Subgroup analyses were performed in cases of substantial heterogeneity. Six randomized and two non-randomized trials with a total of 610 patients were included in the meta-analysis. Caffeine intake significantly reduced time to first bowel movement [SMD -0.39, (95% CI -0.66 to -0.12), p = 0.005] and time to first solid food intake [SMD -0.41, (95% CI -0.79 to -0.04), p = 0.03] in elective laparoscopic colorectal surgery, while time to first flatus, LOS, and the secondary outcomes did not differ significantly. Postoperative caffeine consumption may be a reasonable strategy to prevent POI after elective colorectal surgery. However, larger randomized controlled trials (RCTs) with homogeneous study protocols, especially regarding the dosage form of caffeine and coffee, are needed.
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Affiliation(s)
- Sascha Vaghiri
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
| | - Dimitrios Prassas
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
- Department of Surgery, Katholisches Klinikum Essen, Philippusstift, Teaching Hospital of Duisburg-Essen University, Huelsmannstrasse 17, 45355, Essen, Germany
| | - Stephan Oliver David
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
| | - Wolfram Trudo Knoefel
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
| | - Andreas Krieg
- Department of General and Visceral Surgery, Thoracic Surgery and Proctology, University Hospital Herford, Medical Campus OWL, Ruhr University Bochum, Schwarzenmoorstr. 70, 32049, Herford, Germany.
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Yao H, Shen S, Gao X, Song X, Xiang W. The causal relationship between blood metabolites and rosacea: A Mendelian randomization. Skin Res Technol 2024; 30:e13796. [PMID: 38895784 PMCID: PMC11187845 DOI: 10.1111/srt.13796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024]
Abstract
BACKGROUND An increasing amount of research demonstrates that metabolic disorders are related to rosacea. However, the correlations and causal relationships among them remain unknown. METHODS We conducted not only forward 2-sample MR (Mendelian randomization) analyses but also reverse MR analyses which showed positive results in the forward MR analysis. In the forward MR analyses, inverse-variance weighted (IVW) and MR-Egger were performed as MR analyses. Cochran's Q test and the MR-Egger Intercept were used for sensitivity analyses. Concerning reverse MR analyses, IVW, MR-Egger, weighted median, simple mode, and weighted mode were applied. Cochran's Q test, MR-Egger Intercept, and MR pleiotropy residual sum and outlier (MR-PRESSO) outlier test were applied as sensitivity analyses. RESULTS A total of 24 metabolites and 1 metabolite ratio were shown to have a causal effect on rosacea. N-lactoyl phenylalanine (N-Lac-Phe) was estimated as statistically significant by Bonferroni correction. Interestingly, we found three metabolites that were negatively associated with rosacea, especially caffeine, which are in line with the results of a large cohort study of females. For reverse MR analysis, we revealed that rosacea could potentially decrease the generation of two metabolites: octadecenedioate (C18:1-DC) and methyl vanillate sulfate. CONCLUSION This study identified blood metabolites that may be associated with the development of rosacea. However, the exact mechanism by which these positive metabolites influence rosacea remains uncertain due to the paucity of experimental investigations. The combination of genetics and metabolomics offers novel viewpoints on the research of underlying mechanisms of rosacea and has significant value in screening and prevention of rosacea.
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Affiliation(s)
- Huiyi Yao
- Department of DermatologyZhejiang Chinese Medical UniversityHangzhou Third People's Hospital Affiliated to Zhejiang Chinese Medical UniversityHangzhouChina
| | - Sihao Shen
- Department of DermatologyZhejiang Chinese Medical UniversityHangzhou Third People's Hospital Affiliated to Zhejiang Chinese Medical UniversityHangzhouChina
| | - Xingyue Gao
- Department of DermatologyZhejiang Chinese Medical UniversityHangzhou Third People's Hospital Affiliated to Zhejiang Chinese Medical UniversityHangzhouChina
| | - Xiuzu Song
- Department of DermatologyHangzhou Third People's HospitalHangzhouChina
| | - Wenzhong Xiang
- Department of DermatologyHangzhou Third People's HospitalHangzhouChina
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Milanic M, Hren R, Stergar J, Simoncic U. Monitoring of Caffeine Consumption Effect on Skin Blood Properties by Diffuse Reflectance Spectroscopy. Physiol Res 2024; 73:47-56. [PMID: 38466004 PMCID: PMC11019616 DOI: 10.33549/physiolres.935138] [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: 05/22/2023] [Accepted: 10/17/2023] [Indexed: 04/26/2024] Open
Abstract
Caffeine is the most widely consumed psychoactive substance worldwide, affecting numerous tissues and organs, with notable impacts on the central nervous system, heart, and blood vessels. The effect of caffeine on vascular smooth muscle cells is an initial transient contraction followed by significant vasodilatation. In this study we investigate the use of diffuse reflectance spectroscopy (DRS) for monitoring of vascular changes in human skin induced by caffeine consumption. DRS spectra were recorded on volar sides of the forearms of eight healthy volunteers at time intervals of 0, 30, 60, 120, and 180 min after consumption of caffeine, while one subject served as a negative control. Analytical diffusion approximation solutions for diffuse reflectance from three-layer structures were used to assess skin composition (e.g. dermal blood volume fraction and oxygen saturation) by fitting these solutions to experimental data. The results demonstrate that cutaneous vasodynamics induced by caffeine consumption can be monitored by DRS, while changes in the control subject not consuming caffeine were insignificant.
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Affiliation(s)
- M Milanic
- Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Republic of Slovenia.
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Skylynn T, Abel T, Christopher L, Suliman G, Dominic R, Joel V, Yu Z, Pemminati S. Benefits and Risks of Medications Used in the Management of Hypotension: A Review. Cureus 2024; 16:e51608. [PMID: 38313995 PMCID: PMC10837047 DOI: 10.7759/cureus.51608] [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] [Accepted: 01/02/2024] [Indexed: 02/06/2024] Open
Abstract
This comprehensive literature review addresses the scarcity and limited study of hypotension treatments compared to abundant antihypertensive drugs. Hypotension, categorized as absolute, relative, or orthostatic, has diverse causes. This review explores various treatments, including drugs affecting the sympathetic nervous system, such as midodrine, dihydroergotamine, and ergotamine, which have shown efficacy in managing hypotension. Dopamine agonists/antagonists and other drugs such as ephedrine, norepinephrine, and fludrocortisone are also discussed, each with distinct mechanisms and applications. Additionally, adjunctive agents such as non-steroidal anti-inflammatory agents, caffeine, and monoamine oxidase inhibitors are reviewed for their effects on blood pressure. This review underscores the importance of understanding the efficacy and safety profiles of hypotension treatments to guide healthcare professionals in optimal drug selection and management, emphasizing the need for further research and comparative studies for evidence-based guidelines.
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Affiliation(s)
- Thangwaritorn Skylynn
- Department of Biomedical Education, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
| | - Thomas Abel
- Department of Biomedical Education, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
| | - Lee Christopher
- Department of Biomedical Education, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
| | - Ghafary Suliman
- Department of Biomedical Education, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
| | - Rivera Dominic
- Department of Biomedical Education, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
| | - Varughese Joel
- Department of Biomedical Education, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
| | - Zeyu Yu
- Department of Biomedical Education, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
| | - Sudhakar Pemminati
- Department of Pharmacology, California Health Sciences University College of Osteopathic Medicine, Clovis, USA
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Mendpara V, Garg S, Shah P, Bhavsar J, Anamika F, Patel M, Munjal RS, Gupta V, Garg N, Jain R. Is Coffee and Tea a Threat or Ally to Cardiovascular Health? Cureus 2023; 15:e49991. [PMID: 38186410 PMCID: PMC10769121 DOI: 10.7759/cureus.49991] [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: 09/13/2023] [Accepted: 12/05/2023] [Indexed: 01/09/2024] Open
Abstract
Tea and coffee have become ingrained in our daily lives and have become the most widely consumed drinks after water. Their effects vary on an individual basis depending upon the amount of daily consumption, genetic polymorphisms, and the presence of comorbidities. Non-habitual individuals experience an initial, brief increase in blood pressure due to caffeine's vasoactive effects. Caffeine also appears to be protective against arrhythmias and heart failure. Along with having a generally cardioprotective profile, they have also demonstrated to have a favorable impact on insulin resistance and reduced risk of diabetes mellitus. Physicians often practice caution and advise patients with known cardiovascular diseases to refrain from drinking caffeine; however, studies have shown that drinking two to three cups a day has either no or some beneficial effects on both patients with or without cardiac disorders like arrhythmias. This article focuses on the effects of tea and coffee on the cardiovascular system as well as the potential mechanisms involved.
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Affiliation(s)
- Vaidehi Mendpara
- Medicine and Surgery, Government Medical College Surat, Surat, IND
| | - Shreya Garg
- Internal Medicine, Dayanand Medical College and Hospital, Ludhiana, IND
| | - Priyanshi Shah
- Internal Medicine, Narendra Modi Medical College, Ahmedabad, IND
| | - Jill Bhavsar
- Internal Medicine, Government Medical College, Baroda, IND
| | - Fnu Anamika
- Medicine, University College of Medical Sciences, New Delhi, IND
| | - Meet Patel
- Internal Medicine, Tianjin Medical University, Tianjin, CHN
| | | | - Vasu Gupta
- Internal Medicine, Dayanand Medical College and Hospital, Ludhiana, IND
| | - Nikita Garg
- Pediatrics, Southern Illinois University School of Medicine, Springfield, USA
| | - Rohit Jain
- Internal Medicine, Penn State Hershey Medical Center, Hershey, USA
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Haugen ME, Vårvik FT, Grgic J, Studsrud H, Austheim E, Zimmermann EM, Falch HN, Larsen S, van den Tillaar R, Bjørnsen T. Effect of isolated and combined ingestion of caffeine and citrulline malate on resistance exercise and jumping performance: a randomized double-blind placebo-controlled crossover study. Eur J Nutr 2023; 62:2963-2975. [PMID: 37450275 PMCID: PMC10468939 DOI: 10.1007/s00394-023-03212-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
PURPOSE The aim of this study was to explore the isolated and combined effects of caffeine and citrulline malate (CitMal) on jumping performance, muscular strength, muscular endurance, and pain perception in resistance-trained participants. METHODS Using a randomized and double-blind study design, 35 resistance-trained males (n = 18) and females (n = 17) completed four testing sessions following the ingestion of isolated caffeine (5 mg/kg), isolated CitMal (12 g), combined doses of caffeine and CitMal, and placebo. Supplements were ingested 60 min before performing a countermovement jump (CMJ) test (outcomes included jump height, rate of force development, peak force, and peak power), one-repetition maximum (1RM) squat and bench press, and repetitions to muscular failure in the squat and bench press with 60% of 1RM. Pain perception was evaluated following the repetitions to failure tests. The study was registered at ISRCTN (registration number: ISRCTN11694009). RESULTS Compared to the placebo condition, isolated caffeine ingestion and co-ingestion of caffeine and CitMal significantly enhanced strength in 1RM bench press (Cohen's d: 0.05-0.06; 2.5-2.7%), muscular endurance in the squat (d: 0.46-0.58; 18.6-18.7%) and bench press (d: 0.48-0.64; 9.3-9.5%). However, there was no significant difference between isolated caffeine ingestion and caffeine co-ingested with CitMal, and isolated CitMal supplementation did not have an ergogenic effect in any outcome. No main effect of condition was found in the analysis for CMJ-derived variables, 1RM squat and pain perception. CONCLUSION Caffeine ingestion appears to be ergogenic for muscular strength and muscular endurance, while adding CitMal does not seem to further enhance these effects.
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Affiliation(s)
| | - Fredrik Tonstad Vårvik
- Department of Sport Science and Physical Education, Faculty of Health and Sport Sciences, University of Agder, Kristiansand, Norway
- Norwegian Olympic and Paralympic Committee and Confederation of Sports, Oslo, Norway
| | - Jozo Grgic
- Institute for Health and Sport, Victoria University, Melbourne, Australia
| | - Henrik Studsrud
- Department of Sport Sciences and Physical Education, Nord University, Levanger, Norway
| | - Espen Austheim
- Department of Sport Sciences and Physical Education, Nord University, Levanger, Norway
| | | | | | - Stian Larsen
- Department of Sport Sciences and Physical Education, Nord University, Levanger, Norway
| | | | - Thomas Bjørnsen
- Department of Sport Science and Physical Education, Faculty of Health and Sport Sciences, University of Agder, Kristiansand, Norway
- Norwegian Olympic and Paralympic Committee and Confederation of Sports, Oslo, Norway
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Sharifi-Zahabi E, Rezvani N, Hajizadeh-Sharafabad F, Hosseini-Baharanchi FS, Shidfar F, Rahimi M. Theobromine supplementation in combination with a low-calorie diet improves cardiovascular risk factors in overweight and obese subjects with metabolic syndrome: a randomized controlled trial. Food Funct 2023; 14:8431-8441. [PMID: 37615657 DOI: 10.1039/d3fo00555k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Background & aims: The beneficial effects of theobromine (TB) on obesity and features of metabolic syndrome (MetS) have been reported in several studies. However, the findings are equivocal. The present study aimed to investigate the effects of 12 week pure TB supplementation (450 mg day-1) combined with a low-calorie diet on the anthropometric and metabolic syndrome indices in overweight and obese adults with MetS. Methods: In a randomized double-blind parallel controlled trial, 80 participants aged 40-55 years were randomly assigned to take 450 mg day-1 TB or placebo along with a low-calorie diet for 12 weeks. Dietary intake, anthropometric indices, blood pressure, lipid profile and glycemic indices were assessed at the start and end of the intervention. Results: Seventy-two participants completed the study. After 12 weeks, TB supplementation significantly decreased the waist circumference (WC) (-0.86 cm; P = 0.045), LDL-c/HDL-c (-0.26; P = 0.008), TG/HDL-c (-0.41; P = 0.001), TC/HDL-c (-0.38; P = 0.006) and increased HDL-c (1.72 mg dl-1; P = 0.036) compared to the placebo group. There were no significant differences regarding body weight, BMI, hip circumference (HC), hip-to-waist circumference ratio (WHR), systolic and diastolic blood pressure, fasting levels of total cholesterol (TC), triacylglycerol (TAG), low-density lipoprotein cholesterol (LDL-c), fasting blood glucose, insulin, homoeostatic model assessment for insulin resistance (HOMA-IR) and homeostasis model assessment of β-cell function (HOMA-β) between the two groups (p > 0.05). Conclusion: The results of the current study revealed that TB supplementation along with a low-calorie diet had favorable effects on WC, LDL-c/HDL-c, TG/HDL-c, TC/HDL-c, and serum level of HDL-c in overweight and obese subjects with MetS. Trial registration number: IRCT20091114002709N59. Registration date: 5 March 2022.
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Affiliation(s)
- Elham Sharifi-Zahabi
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Nayebali Rezvani
- Department of Clinical Biochemistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Fatemeh Sadat Hosseini-Baharanchi
- Minimally Invasive Surgery Research Center, & Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Farzad Shidfar
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
| | - Mehrali Rahimi
- School of Medicine, Diabetic Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Gualberto PIB, Benvindo VV, Waclawovsky G, Deresz LF. Acute effects of energy drink consumption on cardiovascular parameters in healthy adults: a systematic review and meta-analysis of randomized clinical trials. Nutr Rev 2023:nuad112. [PMID: 37695306 DOI: 10.1093/nutrit/nuad112] [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] [Indexed: 09/12/2023] Open
Abstract
CONTEXT Energy drinks (EDs) are beverages that contain ingredients that may pose a risk to consumers' cardiovascular health. But current evidence is conflicting and warrants further investigation. OBJECTIVE A systematic review and meta-analysis was conducted on studies that examined the acute effects of ED consumption on systolic blood pressure (SBP), diastolic blood pressure (DBP), resting heart rate, cardiac output (CO), endothelial function, and QT/QTc interval in healthy adults. DATA SOURCES The databases PubMed, EMBASE, Cochrane, LILACS, Web of Science, SportDiscus, and the gray literature were searched to identify randomized controlled trials (RCTs). DATA EXTRACTION Two independent evaluators screened 2014 studies and extracted relevant data from those selected for the analysis. A risk of bias assessment was also performed with the RoB 2 tool and a strength of evidence assessment was performed with the Grading of Recommendations Assessment, Development and Evaluation (GRADE). DATA ANALYSIS A total of 17 RCTs were included in the meta-analysis. With regard to risk of bias, 11 studies were rated as having "some concerns" and 6 as "high risk of bias." The consumption of EDs increased SBP, DBP, and CO in different time frames. More pronounced effects were seen on SBP at 60-80 minutes (4.71 mmHg; 95% CI: 2.97-6.45; GRADE: moderate), DBP at 120 minutes (4.51 mmHg; 95% CI: 2.60-6.42; GRADE: low), and CO at 30-40 minutes after consumption (0.43 L; 95% CI: 0.08-0.77; GRADE: very low). The effects of ED consumption on resting heart rate and QT/QTc interval were not significant (P ≤ 0.05). The assessment of endothelial function effects was not performed due to the absence of any RCTs meeting the inclusion criteria. CONCLUSIONS Acute consumption of EDs increases SBP, DBP, and CO in healthy adults. However, no alterations were observed in other cardiovascular parameters. The results should be interpreted with caution due to the limited number of studies included in the analysis. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42022295335.
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Affiliation(s)
- Pedro I B Gualberto
- Universidade Federal de Juiz de Fora (UFJF), Minas Gerais, Brazil
- Programa de Pós-Graduação em Ciências Aplicadas à Saúde da UFJF, Governador Valadares, Minas Gerais, Brazil
| | - Vinícius V Benvindo
- Universidade Federal de Juiz de Fora (UFJF), Minas Gerais, Brazil
- Programa de Pós-Graduação em Ciências Aplicadas à Saúde da UFJF, Governador Valadares, Minas Gerais, Brazil
| | - Gustavo Waclawovsky
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Ciências da Saúde: Cardiologia do IC/FUC, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luís F Deresz
- Universidade Federal de Juiz de Fora (UFJF), Minas Gerais, Brazil
- Programa de Pós-Graduação em Ciências Aplicadas à Saúde da UFJF, Governador Valadares, Minas Gerais, Brazil
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George AG, Federico A, Gom RC, Harris SA, Teskey GC. Caffeine exacerbates seizure-induced death via postictal hypoxia. Sci Rep 2023; 13:14150. [PMID: 37644198 PMCID: PMC10465499 DOI: 10.1038/s41598-023-41409-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 08/25/2023] [Indexed: 08/31/2023] Open
Abstract
Sudden unexpected death in epilepsy (SUDEP) is the leading epilepsy-related cause of premature mortality in people with intractable epilepsy, who are 27 times more likely to die than the general population. Impairment of the central control of breathing following a seizure has been identified as a putative cause of death, but the mechanisms underlying this seizure-induced breathing failure are largely unknown. Our laboratory has advanced a vascular theory of postictal behavioural dysfunction, including SUDEP. We have recently reported that seizure-induced death occurs after seizures invade brainstem breathing centres which then leads to local hypoxia causing breathing failure and death. Here we investigated the effects of caffeine and two adenosine receptors in two models of seizure-induced death. We recorded local oxygen levels in brainstem breathing centres as well as time to cessation of breathing and cardiac activity relative to seizure activity. The administration of the non-selective A1/A2A antagonist caffeine or the selective A1 agonist N6-cyclopentyladenosine reveals a detrimental effect on postictal hypoxia, providing support for caffeine modulating cerebral vasculature leading to brainstem hypoxia and cessation of breathing. Conversely, A2A activation with CGS-21680 was found to increase the lifespan of mice in both our models of seizure-induced death.
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Affiliation(s)
- Antis G George
- Cumming School of Medicine, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 4N1, Canada.
- Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada.
- Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada.
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive N.W. Calgary, Alberta, T2N 4N, Canada.
| | - Alyssa Federico
- Cumming School of Medicine, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
| | - Renaud C Gom
- Cumming School of Medicine, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada
| | - Sydney A Harris
- Cumming School of Medicine, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - G Campbell Teskey
- Cumming School of Medicine, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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11
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Fares R, Champéroux P. Simultaneous assessment of central nervous and respiratory systems using jacketed telemetry in socially-housed rats: Application of the "3Rs" principles in core battery safety pharmacology studies. J Pharmacol Toxicol Methods 2023; 121:107268. [PMID: 37146838 DOI: 10.1016/j.vascn.2023.107268] [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: 01/28/2023] [Revised: 04/11/2023] [Accepted: 04/21/2023] [Indexed: 05/07/2023]
Abstract
Central nervous (CNS) and respiratory systems are routinely investigated in safety pharmacology core battery studies. For small molecules, the assessment of both vital organ systems is frequently done in rats in two distinct studies. With the advent of a miniaturized technology of jacketed external telemetry for rats (DECRO system), the simultaneous assessment of modified Irwin's or functional observational battery (FOB) test and respiratory (Resp) studies has become possible within a single study. Therefore, the objectives of this study were to perform the FOB and the Resp studies simultaneously in pair-housed rats fitted with jacketed telemetry, and to assess the feasibility and the outcome of this combination in control, baclofen, caffeine, and clonidine treated groups, i.e., with three agents having both respiratory and CNS effects. Our results provided evidence that performing both Resp and FOB assessment simultaneously in the same rat was feasible and the outcome was successful. The expected CNS and respiratory effects of the 3 reference compounds were accurately captured in each assay confirming the results' relevance. In addition, heart rate and activity level were recorded as additional parameters making this design as an enhanced approach for nonclinical safety assessment in rats. This work provides clear evidence that the "3Rs" principles can be effectively applied in core battery safety pharmacology studies while remaining in compliance with worldwide regulatory guidelines. Both reduction in animal use and refinements in procedures are demonstrated with this model.
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Zhang X, Lee MD, Buckley C, Hollenberg MD, Wilson C, McCarron JG. Endothelial PAR2 activation evokes resistance artery relaxation. J Cell Physiol 2023; 238:776-789. [PMID: 36791026 PMCID: PMC10952239 DOI: 10.1002/jcp.30973] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/20/2023] [Accepted: 01/30/2023] [Indexed: 02/16/2023]
Abstract
Protease-activated receptor-1 & -2 (PAR1 and PAR2) are expressed widely in cardiovascular tissues including endothelial and smooth muscle cells. PAR1 and PAR2 may regulate blood pressure via changes in vascular contraction or relaxation mediated by endothelial Ca2+ signaling, but the mechanisms are incompletely understood. By using single-cell Ca2+ imaging across hundreds of endothelial cells in intact blood vessels, we explored PAR-mediated regulation of blood vessel function using PAR1 and PAR2 activators. We show that PAR2 activation evoked multicellular Ca2+ waves that propagated across the endothelium. The PAR2-evoked Ca2+ waves were temporally distinct from those generated by muscarinic receptor activation. PAR2 activated distinct clusters of endothelial cells, and these cells were different from those activated by muscarinic receptor stimulation. These results indicate that distinct cell clusters facilitate spatial segregation of endothelial signal processing. We also demonstrate that PAR2 is a phospholipase C-coupled receptor that evokes Ca2+ release from the IP3 -sensitive store in endothelial cells. A physiological consequence of this PAR2 signaling system is endothelium-dependent relaxation. Conversely, PAR1 activation did not trigger endothelial cell Ca2+ signaling nor relax or contract mesenteric arteries. Neither did PAR1 activators alter the response to PAR2 or muscarinic receptor activation. Collectively, these results suggest that endothelial PAR2 but not PAR1 evokes mesenteric artery relaxation by evoking IP3 -mediated Ca2+ release from the internal store. Sensing mediated by PAR2 receptors is distributed to spatially separated clusters of endothelial cells.
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Affiliation(s)
- Xun Zhang
- Strathclyde Institute of Pharmacy and Biomedical SciencesUniversity of StrathclydeGlasgowUK
| | - Matthew D. Lee
- Strathclyde Institute of Pharmacy and Biomedical SciencesUniversity of StrathclydeGlasgowUK
| | - Charlotte Buckley
- Strathclyde Institute of Pharmacy and Biomedical SciencesUniversity of StrathclydeGlasgowUK
| | - Morley D. Hollenberg
- Department of Physiology and Pharmacology and Department of MedicineUniversity of Calgary Cumming School of MedicineCalgaryAlbertaCanada
| | - Calum Wilson
- Strathclyde Institute of Pharmacy and Biomedical SciencesUniversity of StrathclydeGlasgowUK
| | - John G. McCarron
- Strathclyde Institute of Pharmacy and Biomedical SciencesUniversity of StrathclydeGlasgowUK
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de Mello V, de Mesquita Júnior GA, Alvim JGE, Costa JDCD, Vilela FMP. Recent patent applications for coffee and coffee by-products as active ingredients in cosmetics. Int J Cosmet Sci 2023. [PMID: 36704855 DOI: 10.1111/ics.12843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Coffee is one of the most consumed beverages worldwide, and its production and consumption generate large amounts of by-products annually. Coffee by-products and coffee beans are rich in bioactive compounds of great commercial value, including potential applications as active ingredients in skin care products and cosmetic formulations. In addition, there has been growing interest in the use of natural ingredients for cosmetic purposes. Considering the importance of coffee in the world economy, its chemical constituents with potential for cosmetic and dermatological application, and the importance of patents for innovation and technological development, the present study aimed to review recent patents involving coffee and coffee by-product use in cosmetics. METHODS This review was carried out using Espacenet. The following inclusion criteria were established: patents that included the terms "coffee" and "skin" in the title, abstract and claims and belonged to the classification A61Q, which is related to the "specific use of cosmetics or similar toilet preparations" considering the International Patent Classification (IPC) or Cooperative Patent Classification (CPC). RESULTS Considering the 52 patents analysed, the bean was the main way to obtain extracts (39), followed by green beans (7), silverskin (3), peel and pulp (1), pulp (1) and beans and leaves (1). The formulations are mainly intended for use in nonspecific areas of skin (29), eye areas (12), scalp hair (9) and lip skin (2) with claims of anti-ageing, moisturizers, sun protection, hair growth, anti-dandruff, etc. CONCLUSION: Coffee and its residues have high amounts of phenolic compounds, caffeine, fatty acids and other substances known to have important biological properties for the skin. Coffee and its by-products are promising ingredients to be incorporated into topical formulations, ensuring skin health benefits and reducing the environmental impact.
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Affiliation(s)
- Valéria de Mello
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | | | - Julia Gabriela Eurico Alvim
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Juliana de Carvalho da Costa
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Fernanda Maria Pinto Vilela
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Brazil
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Mitsuhashi R, Sawai A, Kiyohara K, Shiraki H, Nakata Y. Factors Associated with the Prevalence and Severity of Menstrual-Related Symptoms: A Systematic Review and Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 20:ijerph20010569. [PMID: 36612891 PMCID: PMC9819475 DOI: 10.3390/ijerph20010569] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 06/03/2023]
Abstract
This study aimed to identify factors associated with the prevalence and severity of menstrual-related symptoms. The protocol was registered in PROSPERO (CRD42021208432). We conducted literature searches of PubMed and Ichushi-Web and used the Jonna Briggs Institute critical appraisal checklist to assess the quality. Of the 77 studies included in the meta-analysis, significant odds ratios (ORs) were obtained for eight factors associated with primary dysmenorrhea (PD): age ≥ 20 years (OR: 1.18; 95% confidence interval [CI]: 1.04−1.34), body mass index (BMI) < 18.5 kg/m2 (OR: 1.51; 95% CI: 1.01−2.26), longer menstrual periods (OR: 0.16; 95% CI: 0.04−0.28), irregular menstrual cycle (OR: 1.28; 95% CI: 1.13−1.45), family history of PD (OR: 3.80; 95% CI: 2.18−6.61), stress (OR: 1.88; 95% CI: 1.30−2.72), sleeping hours < 7 h (OR: 1.19; 95% CI: 1.04−1.35), and bedtime after 23:01 (OR: 1.30; 95% CI: 1.16−1.45). Two factors were associated with severity of PD (moderate vs. severe): BMI < 18.5 kg/m2 (OR: 1.89; 95% CI: 1.01−3.54) and smoking (OR: 1.94; 95% CI: 1.08−3.47). PD severity (mild vs. severe) and prevalence of premenstrual syndrome were associated with BMI < 18.5 kg/m2 (OR: 1.91; 95% CI: 1.04−3.50) and smoking (OR: 1.86; 95% CI: 1.31−2.66), respectively. The identified risk factors could be utilized to construct an appropriate strategy to improve menstrual symptoms and support women’s health.
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Affiliation(s)
- Risa Mitsuhashi
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8574, Japan
| | - Akemi Sawai
- Research Institute of Physical Fitness, Japan Women’s College of Physical Education, 8-19-1 Kitakarasuyama, Setagaya-ku 157-8565, Japan
| | - Kosuke Kiyohara
- Department of Food Science, Faculty of Home Economics, Otsuma Women’s University, 12 Sanban-cho, Chiyoda-ku 102-8357, Japan
| | - Hitoshi Shiraki
- Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8574, Japan
| | - Yoshio Nakata
- Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8574, Japan
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Ősz BE, Jîtcă G, Ștefănescu RE, Pușcaș A, Tero-Vescan A, Vari CE. Caffeine and Its Antioxidant Properties-It Is All about Dose and Source. Int J Mol Sci 2022; 23:13074. [PMID: 36361861 PMCID: PMC9654796 DOI: 10.3390/ijms232113074] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/23/2022] [Accepted: 10/24/2022] [Indexed: 08/16/2023] Open
Abstract
Caffeine is the most frequently used substance with a central nervous system stimulant effect, but its consumption is most often due to the intake of foods and drinks that contain it (coffee, tea, chocolate, food supplements with plant extracts of Guarana, Mate herba, Cola nuts). Due to its innocuity, caffeine is a safe xanthine alkaloid for human consumption in a wide range of doses, being used for its central nervous stimulating effect, lipolytic and diuresis-enhancing properties, but also as a permitted ergogenic compound in athletes. In addition to the mechanisms that explain the effects of caffeine on the targeted organ, there are many proposed mechanisms by which this substance would have antioxidant effects. As such, its consumption prevents the occurrence/progression of certain neurodegenerative diseases as well as other medical conditions associated with increased levels of reactive oxygen or nitrogen species. However, most studies that have assessed the beneficial effects of caffeine have used pure caffeine. The question, therefore, arises whether the daily intake of caffeine from food or drink has similar benefits, considering that in foods or drinks with a high caffeine content, there are other substances that could interfere with this action, either by potentiating or decreasing its antioxidant capacity. Natural sources of caffeine often combine plant polyphenols (phenol-carboxylic acids, catechins) with known antioxidant effects; however, stimulant drinks and dietary supplements often contain sugars or artificial sweeteners that can significantly reduce the effects of caffeine on oxidative stress. The objective of this review is to clarify the effects of caffeine in modulating oxidative stress and assess these benefits, considering the source and the dose administered.
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Affiliation(s)
- Bianca-Eugenia Ősz
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540139 Targu Mures, Romania
| | - George Jîtcă
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540139 Targu Mures, Romania
| | - Ruxandra-Emilia Ștefănescu
- Department of Pharmacognosy and Phytotherapy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540139 Targu Mures, Romania
| | - Amalia Pușcaș
- Department of Biochemistry and Chemistry of Environmental Factors, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540139 Targu Mures, Romania
| | - Amelia Tero-Vescan
- Department of Biochemistry, Faculty of Medicine, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540139 Targu Mures, Romania
| | - Camil-Eugen Vari
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 540139 Targu Mures, Romania
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Tangmanussukum P, Kawichai T, Suratanee A, Plaimas K. Heterogeneous network propagation with forward similarity integration to enhance drug-target association prediction. PeerJ Comput Sci 2022; 8:e1124. [PMID: 36262151 PMCID: PMC9575853 DOI: 10.7717/peerj-cs.1124] [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: 06/17/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Identification of drug-target interaction (DTI) is a crucial step to reduce time and cost in the drug discovery and development process. Since various biological data are publicly available, DTIs have been identified computationally. To predict DTIs, most existing methods focus on a single similarity measure of drugs and target proteins, whereas some recent methods integrate a particular set of drug and target similarity measures by a single integration function. Therefore, many DTIs are still missing. In this study, we propose heterogeneous network propagation with the forward similarity integration (FSI) algorithm, which systematically selects the optimal integration of multiple similarity measures of drugs and target proteins. Seven drug-drug and nine target-target similarity measures are applied with four distinct integration methods to finally create an optimal heterogeneous network model. Consequently, the optimal model uses the target similarity based on protein sequences and the fused drug similarity, which combines the similarity measures based on chemical structures, the Jaccard scores of drug-disease associations, and the cosine scores of drug-drug interactions. With an accuracy of 99.8%, this model significantly outperforms others that utilize different similarity measures of drugs and target proteins. In addition, the validation of the DTI predictions of this model demonstrates the ability of our method to discover missing potential DTIs.
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Affiliation(s)
- Piyanut Tangmanussukum
- Advanced Virtual and Intelligent Computing (AVIC) Center, Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Thitipong Kawichai
- Department of Mathematics and Computer Science, Academic Division, Chulachomklao Royal Military Academy, Nakhon Nayok, Thailand
| | - Apichat Suratanee
- Department of Mathematics, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
- Intelligent and Nonlinear Dynamics Innovations Research Center, Science and Technology Research Institute, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
| | - Kitiporn Plaimas
- Advanced Virtual and Intelligent Computing (AVIC) Center, Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
- Omics Science and Bioinformatics Center, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
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17
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King DR, Sedovy MW, Eaton X, Dunaway LS, Good ME, Isakson BE, Johnstone SR. Cell-To-Cell Communication in the Resistance Vasculature. Compr Physiol 2022; 12:3833-3867. [PMID: 35959755 DOI: 10.1002/cphy.c210040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The arterial vasculature can be divided into large conduit arteries, intermediate contractile arteries, resistance arteries, arterioles, and capillaries. Resistance arteries and arterioles primarily function to control systemic blood pressure. The resistance arteries are composed of a layer of endothelial cells oriented parallel to the direction of blood flow, which are separated by a matrix layer termed the internal elastic lamina from several layers of smooth muscle cells oriented perpendicular to the direction of blood flow. Cells within the vessel walls communicate in a homocellular and heterocellular fashion to govern luminal diameter, arterial resistance, and blood pressure. At rest, potassium currents govern the basal state of endothelial and smooth muscle cells. Multiple stimuli can elicit rises in intracellular calcium levels in either endothelial cells or smooth muscle cells, sourced from intracellular stores such as the endoplasmic reticulum or the extracellular space. In general, activation of endothelial cells results in the production of a vasodilatory signal, usually in the form of nitric oxide or endothelial-derived hyperpolarization. Conversely, activation of smooth muscle cells results in a vasoconstriction response through smooth muscle cell contraction. © 2022 American Physiological Society. Compr Physiol 12: 1-35, 2022.
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Affiliation(s)
- D Ryan King
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA
| | - Meghan W Sedovy
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA.,Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, Virginia, USA
| | - Xinyan Eaton
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA
| | - Luke S Dunaway
- Robert M. Berne Cardiovascular Research Centre, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Miranda E Good
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Centre, University of Virginia School of Medicine, Charlottesville, Virginia, USA.,Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Scott R Johnstone
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA.,Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, USA
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18
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Ahn HS, Jung Y, Park SH. Measuring glomerular blood transfer rate in kidney using diffusion-weighted arterial spin labeling. Magn Reson Med 2022; 88:2408-2418. [PMID: 35877788 DOI: 10.1002/mrm.29401] [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: 01/27/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 11/07/2022]
Abstract
PURPOSE To propose a two-compartment renal perfusion model for calculating glomerular blood transfer rate ( k G $$ {k}_G $$ ) as a new measure of renal function. THEORY The renal perfusion signal was divided into preglomerular and postglomerular flows according to flow velocity. By analyzing perfusion signals acquired with and without diffusion gradients, we estimated k G $$ {k}_G $$ , the blood transfer rate from the afferent arterioles into the glomerulus. METHODS A multislice multidelay diffusion-weighted arterial spin labeling sequence was applied to subjects with no history of renal dysfunctions. In the multiple b-value experiment, images were acquired with seven b-values to validate the bi-exponential decays of the renal perfusion signal and to determine the appropriate b-value for suppressing preglomerular flow. In the caffeine challenge, six subjects were scanned twice on the caffeine day and the control day. The k G $$ {k}_G $$ values of the two dates were compared. RESULTS The perfusion signal showed a bi-exponential decay with b-values. There was no significant difference in renal blood flow and arterial transit time between caffeine and control days. In contrast, cortical k G $$ {k}_G $$ was significantly higher on the caffeine day (caffeine day: 106 . 0 ± 20 . 3 $$ 106.0\pm 20.3 $$ min - 1 $$ {}^{-1} $$ control day: 78 . 8 ± 22 . 9 $$ 78.8\pm 22.9 $$ min - 1 $$ {}^{-1} $$ ). These results were consistent with those from the literature. CONCLUSION We showed that the perfusion signal consists of two compartments of preglomerular flow and postglomerular flow. The proposed diffusion-weighted arterial spin labeling could measure the glomerular blood transfer rate ( k G $$ {k}_G $$ ), which was sensitive enough to noninvasively monitor the caffeine-induced vasodilation of afferent arterioles.
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Affiliation(s)
- Hyun-Seo Ahn
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Yujin Jung
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Sung-Hong Park
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
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Tanghe A, Heyman E, Lespagnol E, Stautemas J, Celie B, Op ‘t Roodt J, Rietzschel E, Dias Soares D, Hermans N, Tuenter E, Shadid S, Calders P. Acute Effects of Cocoa Flavanols on Blood Pressure and Peripheral Vascular Reactivity in Type 2 Diabetes Mellitus and Essential Hypertension. Nutrients 2022; 14:nu14132692. [PMID: 35807872 PMCID: PMC9268419 DOI: 10.3390/nu14132692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 01/27/2023] Open
Abstract
Background: Type 2 diabetes mellitus (T2DM) is associated with a high risk of vascular complications. Interestingly, cocoa flavanols (CF) can exert beneficial vascular effects in non-diabetic subjects. However, these effects have only been scarcely studied in T2DM. Therefore, we performed a study to assess the effects on vascular reactivity of a single dose of CF (790 mg) in T2DM and whether certain antihypertensive drugs may modulate these effects. Methods: 24 non-diabetic and 11 T2DM subjects were studied in a cross-over design. Fasting blood samples, blood pressure (BP), and arterial vasoreactivity (flow-mediated dilation) were assessed before and 70 min after capsule ingestion. Muscle microvascular reactivity was only assessed after capsule ingestion. Age, waist-to-hip ratio, BP at baseline, and the use of antihypertensive drugs were regarded as covariates in a mixed models analysis. Results: CF ingestion did not affect any parameter. However, independent of the type of capsules ingested, a decrease in diastolic BP by 3 mmHg (95% CI: −4.0; −2.0) and an increase in the change in brachial artery diameter (pre vs. post occlusion) by 0.06 mm (95% CI: 0.01; 0.12) were detected in the non-diabetic group, while they remained unchanged in the T2DM group. Conclusion: No beneficial effects of CF were detected on vascular reactivity parameters in T2DM and non-diabetic participants.
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Affiliation(s)
- Anouk Tanghe
- Department of Rehabilitation Sciences, Ghent University, 9000 Ghent, Belgium; (A.T.); (J.S.); (B.C.)
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d’Opale, ULR 7369-URePSSS-Unité de Recherche Pluridisciplinaire Sport Santé Société, F-59000 Lille, France; (E.H.); (E.L.)
| | - Elsa Heyman
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d’Opale, ULR 7369-URePSSS-Unité de Recherche Pluridisciplinaire Sport Santé Société, F-59000 Lille, France; (E.H.); (E.L.)
- Institut Universitaire de France (IUF)
| | - Elodie Lespagnol
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d’Opale, ULR 7369-URePSSS-Unité de Recherche Pluridisciplinaire Sport Santé Société, F-59000 Lille, France; (E.H.); (E.L.)
| | - Jan Stautemas
- Department of Rehabilitation Sciences, Ghent University, 9000 Ghent, Belgium; (A.T.); (J.S.); (B.C.)
| | - Bert Celie
- Department of Rehabilitation Sciences, Ghent University, 9000 Ghent, Belgium; (A.T.); (J.S.); (B.C.)
| | - Jos Op ‘t Roodt
- School of Cardiovascular Diseases (CARIM), Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands;
| | - Ernst Rietzschel
- Department of Cardiology, Department of Internal Medicine, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Danusa Dias Soares
- Department of Physical Education, The Federal University of Minas Gerais, Belo Horizonte 6627, Brazil;
| | - Nina Hermans
- Department of Pharmaceutical Sciences, University of Antwerp, 2610 Antwerp, Belgium; (N.H.); (E.T.)
| | - Emmy Tuenter
- Department of Pharmaceutical Sciences, University of Antwerp, 2610 Antwerp, Belgium; (N.H.); (E.T.)
| | - Samyah Shadid
- Department of Endocrinology, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Patrick Calders
- Department of Rehabilitation Sciences, Ghent University, 9000 Ghent, Belgium; (A.T.); (J.S.); (B.C.)
- Correspondence:
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Effect of Coffee Consumption on Postoperative Ileus after Colorectal Surgery: A Meta-Analysis of Randomized Controlled Trials. Gastroenterol Res Pract 2022; 2022:8029600. [PMID: 35721823 PMCID: PMC9200568 DOI: 10.1155/2022/8029600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/08/2022] [Accepted: 04/27/2022] [Indexed: 12/02/2022] Open
Abstract
Background Postoperative ileus (POI) is an important complication after elective colorectal surgery, which prolongs hospital stay and increases hospital costs. Coffee has been reported to be beneficial for the recovery of gastrointestinal function. We aimed to investigate the effectiveness of coffee consumption in the treatment of POI, following elective colorectal surgery. Methods A comprehensive literature search for medical subject heading (MeSH) terms, including coffee, caffeine, colon, rectum, and colorectal surgery was conducted in PubMed, Embase, and Cochrane Library until November 2021. A meta-analysis of postoperative outcomes was conducted to assess the effectiveness of coffee consumption on POI after colorectal surgery. Results 726 articles were identified and six RCTs that captured 416 patients were included. The time to first defecation was reduced with postoperative coffee consumption compared to the control group (mean difference = −15.03 h; 95% confidence interval: -17.79, -12.26; P < 0.00001). There was no difference in time to first flatus, time to tolerance for solid food, length of hospital stay, use of laxatives, reinsertion of nasogastric tube, need for reoperation, postoperative complications, and anastomotic leak between the groups. Coffee did not have any adverse effects. Conclusion The current literature revealed that postoperative coffee consumption shortened the time to first defecation following elective colorectal surgery. Large sample and tightly controlled multicenter randomized clinical trials are needed to offer a more accurate evaluation of the efficacy of coffee.
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Study on South African Indigenous Teas-Antioxidant Potential, Nutritional Content, and Hypoxia-Induced Cyclooxygenase Inhibition on U87 MG Cell Line. Molecules 2022; 27:molecules27113505. [PMID: 35684442 PMCID: PMC9181930 DOI: 10.3390/molecules27113505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/16/2022] [Accepted: 05/20/2022] [Indexed: 12/04/2022] Open
Abstract
Background: This study comparatively assessed seven indigenous traditional tea plants on several attributes that included antioxidant, nutritional, caffeine contents, and cyclooxygenase activity. Methodology: Nutritional content of all tea plants were determined for energy, fat, carbohydrates, total sugars, dietary fiber and amino acids. Antioxidant potential and the antioxidant potentiating secondary metabolites were also measured and compared. Further, we investigated the tea plants for any role they would have on cyclooxygenase (COX) activity on cobalt chloride (CoCl2) induced human glioma cell lines (U87MG). Results: The tea plants were found non-cytotoxic at concentrations tested against the human Chang liver and HeK 293 kidney cells and were found to be naturally caffeine free. The lowest and highest extraction yield among the tea plants was 7.1% for B. saligna and 15.48% for L. scaberrimma respectively. On average, the flavonol content was 12 to 8 QE/g, ORAC 800 µmol TE/g, TEAC 150 µmol TE/g, FRAP 155 µmol AAE/g, polyphenols 40 mg GAE/g, flavanols 0.35 mg CE/g, flavonols 12 mg QE/g and total flavonoid content (TFC) 180 µg QE/mg. The COX activity has been found to be inhibited by a dose-dependent manner by L. scaberrimma, B. saligna and L. javanica. Conclusion: The results further support competitive value of tea plants and need for improved and further development.
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Rodríguez-Rodríguez P, Ragusky K, Phuthong S, Ruvira S, Ramiro-Cortijo D, Cañas S, Rebollo-Hernanz M, Morales MD, López de Pablo ÁL, Martín-Cabrejas MA, Arribas SM. Vasoactive Properties of a Cocoa Shell Extract: Mechanism of Action and Effect on Endothelial Dysfunction in Aged Rats. Antioxidants (Basel) 2022; 11:antiox11020429. [PMID: 35204310 PMCID: PMC8869230 DOI: 10.3390/antiox11020429] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/15/2022] [Accepted: 02/19/2022] [Indexed: 02/06/2023] Open
Abstract
Cocoa has cardiovascular beneficial effects related to its content of antioxidant phytochemicals. Cocoa manufacturing produces large amounts of waste, but some by-products may be used as ingredients with health-promoting potential. We aimed to investigate the vasoactive actions of an extract from cocoa shell (CSE), a by-product containing theobromine (TH), caffeine (CAF) and protocatechuic acid (PCA) as major phytochemicals. In carotid and iliac arteries from 5-month and 15-month-old rats, we investigated CSE vasoactive properties, mechanism of action, and the capacity of CSE, TH, CAF and PCA to improve age-induced endothelial dysfunction. Vascular function was evaluated using isometric tension recording and superoxide anion production by dihydroethidium (DHE) staining and confocal microscopy. CSE caused endothelium-dependent vasorelaxation, blocked by L-NAME, but not indomethacin, regardless of sex, age, or vessel type. CSE maximal responses and EC50 were significantly lower compared to acetylcholine (ACh). Arterial preincubation with CSE, TH, CAF or PCA, significantly reduced the number of vascular DHE-positive cells. Compared to adult males, iliac arteries from aged males exhibited reduced ACh concentration-dependent vasodilatation but larger CSE responses. In iliac arteries from aged male and female rats, preincubation with 10−4 M CSE and PCA, but not TH or CAF, improved ACh-relaxations. In conclusion, CSE has vasodilatory properties associated with increased nitric oxide bioavailability, related to its antioxidant phytochemicals, being particularly relevant PCA. Therefore, CSE is a potential food ingredient for diseases related to endothelial dysfunction.
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Affiliation(s)
- Pilar Rodríguez-Rodríguez
- Department of Physiology, Faculty of Medicine, Universidad Autónoma de Madrid, C/Arzobispo Morcillo 2, 28029 Madrid, Spain; (P.R.-R.); (K.R.); (S.R.); (D.R.-C.); (Á.L.L.d.P.)
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
| | - Kendal Ragusky
- Department of Physiology, Faculty of Medicine, Universidad Autónoma de Madrid, C/Arzobispo Morcillo 2, 28029 Madrid, Spain; (P.R.-R.); (K.R.); (S.R.); (D.R.-C.); (Á.L.L.d.P.)
| | - Sophida Phuthong
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Santiago Ruvira
- Department of Physiology, Faculty of Medicine, Universidad Autónoma de Madrid, C/Arzobispo Morcillo 2, 28029 Madrid, Spain; (P.R.-R.); (K.R.); (S.R.); (D.R.-C.); (Á.L.L.d.P.)
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
- PhD Programme in Pharmacology and Physiology, Doctoral School, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - David Ramiro-Cortijo
- Department of Physiology, Faculty of Medicine, Universidad Autónoma de Madrid, C/Arzobispo Morcillo 2, 28029 Madrid, Spain; (P.R.-R.); (K.R.); (S.R.); (D.R.-C.); (Á.L.L.d.P.)
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
| | - Silvia Cañas
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
- Department of Agricultural Chemistry and Food Science, Faculty of Science, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
- Institute of Food Science Research, CIAL (UAM-CSIC), Universidad Autonoma de Madrid, C/Nicolás Cabrera, 9, 28049 Madrid, Spain
| | - Miguel Rebollo-Hernanz
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
- Department of Agricultural Chemistry and Food Science, Faculty of Science, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
- Institute of Food Science Research, CIAL (UAM-CSIC), Universidad Autonoma de Madrid, C/Nicolás Cabrera, 9, 28049 Madrid, Spain
| | - María Dolores Morales
- Confocal Microscopy Service (SiDI), Faculty of Medicine, Universidad Autonoma de Madrid, C/Arzobispo Morcillo 2, 28029 Madrid, Spain;
| | - Ángel L. López de Pablo
- Department of Physiology, Faculty of Medicine, Universidad Autónoma de Madrid, C/Arzobispo Morcillo 2, 28029 Madrid, Spain; (P.R.-R.); (K.R.); (S.R.); (D.R.-C.); (Á.L.L.d.P.)
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
| | - María A. Martín-Cabrejas
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
- Department of Agricultural Chemistry and Food Science, Faculty of Science, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
- Institute of Food Science Research, CIAL (UAM-CSIC), Universidad Autonoma de Madrid, C/Nicolás Cabrera, 9, 28049 Madrid, Spain
| | - Silvia M. Arribas
- Department of Physiology, Faculty of Medicine, Universidad Autónoma de Madrid, C/Arzobispo Morcillo 2, 28029 Madrid, Spain; (P.R.-R.); (K.R.); (S.R.); (D.R.-C.); (Á.L.L.d.P.)
- Food, Oxidative Stress and Cardiovascular Health (FOSCH) Multidisciplinary Research Team, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain; (S.C.); (M.R.-H.); (M.A.M.-C.)
- Correspondence:
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Paraxanthine Supplementation Increases Muscle Mass, Strength, and Endurance in Mice. Nutrients 2022; 14:nu14040893. [PMID: 35215543 PMCID: PMC8875973 DOI: 10.3390/nu14040893] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/08/2022] [Accepted: 02/17/2022] [Indexed: 11/26/2022] Open
Abstract
Paraxanthine is a natural dietary ingredient and the main metabolite of caffeine in humans. Compared to caffeine, paraxanthine exhibits lower toxicity, lesser anxiogenic properties, stronger locomotor activating effects, greater wake promoting properties, and stronger dopaminergic effects. The purpose of this study was to evaluate the potential beneficial effects of paraxanthine supplementation on muscle mass, strength, and endurance performance in comparison to the control and other ingredients commonly used by athletes: L-theanine, alpha-GPC, and taurine. Male Swiss Albino mice from five groups (n = 8 per group) were orally administered paraxanthine (20.5 mg/kg/day, human equivalence dose (HED) 100 mg), L-theanine (10.28 mg/kg/day, HED 50 mg), alpha-GPC (41.09 mg/kg/day, HED 200 mg), taurine (102.75 mg/kg/day, HED 500 mg), or control (carboxy methyl cellulose) for 4 weeks. Exercise performance was evaluated using forelimb grip strength and treadmill endurance exercise. All animals were subject to treadmill training for 60 min 5 days per week. Blood draws were utilized to analyze lipid profile, liver health, renal function, and nitric oxide levels. Paraxanthine significantly increased forelimb grip strength by 17% (p < 0.001), treadmill exercise performance by 39% (p < 0.001), gastrocnemius and soleus muscle mass by 14% and 41% respectively (both p < 0.001), and nitric oxide levels by 100% compared to control (p < 0.001), while reducing triglyceride (p < 0.001), total cholesterol (p < 0.001), LDL (p < 0.05), and increasing HDL (p < 0.001) compared to control, and compared to L-theanine, alpha-GPC, and taurine. Results from this initial investigation indicate that, when compared to the control, L-theanine, alpha-GPC, and taurine, paraxanthine is an effective ingredient for various aspects of sports performance and may enhance cardiovascular health.
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Barré T, Fontaine H, Pol S, Ramier C, Di Beo V, Protopopescu C, Marcellin F, Bureau M, Bourlière M, Dorival C, Petrov-Sanchez V, Asselah T, Delarocque-Astagneau E, Larrey D, Duclos-Vallée JC, Carrat F, Carrieri P. Metabolic Disorders in Patients with Chronic Hepatitis B Virus Infection: Coffee as a Panacea? (ANRS CO22 Hepather Cohort). Antioxidants (Basel) 2022; 11:antiox11020379. [PMID: 35204261 PMCID: PMC8869416 DOI: 10.3390/antiox11020379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 12/04/2022] Open
Abstract
People living with chronic hepatitis B virus (HBV) infection are at high risk of liver disease progression, which is positively associated with metabolic disorders, but inversely associated with dyslipidemia. Diet, including dietary antioxidants, is a lever of metabolic disorder management. In particular, elevated coffee consumption is associated with different metabolic outcomes in the general population. We aimed to test whether such associations occur in HBV-infected people. Based on cross-sectional data from the ANRS CO22 Hepather cohort, we performed logistic regression models with (i) dyslipidemia, (ii) hypertension, and (iii) diabetes as outcomes, and with demographic, clinical, and socio-behavioral (including coffee consumption) data as explanatory variables. Among 4746 HBV-infected patients, drinking ≥3 cups of coffee per day was associated with a higher risk of dyslipidemia (adjusted odds ratio [95% confidence interval] 1.49 [1.10–2.00], p = 0.009) and a lower risk of hypertension (0.64 [0.50–0.82], p = 0.001). It was not associated with diabetes. Elevated coffee consumption was associated with a higher risk of dyslipidemia and a lower risk of hypertension in HBV-infected patients, two effects expected to be associated with favorable clinical outcomes. Further studies should test whether such metabolic benefits translate into reduced mortality risk in this population.
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Affiliation(s)
- Tangui Barré
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
| | - Hélène Fontaine
- Université de Paris, AP-HP, Hôpital Cochin, Département d’Hépatologie/Addictologie, 75014 Paris, France; (H.F.); (S.P.)
| | - Stanislas Pol
- Université de Paris, AP-HP, Hôpital Cochin, Département d’Hépatologie/Addictologie, 75014 Paris, France; (H.F.); (S.P.)
| | - Clémence Ramier
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
| | - Vincent Di Beo
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
| | - Camelia Protopopescu
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
| | - Fabienne Marcellin
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
| | - Morgane Bureau
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
| | - Marc Bourlière
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
- Hôpital St. Joseph, Service d’Hépato-Gastroentérologie, 13008 Marseille, France
| | - Céline Dorival
- Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Pierre Louis d’Epidémiologie et de Santé Publique, Sorbonne Université, 75646 Paris, France;
| | - Ventzislava Petrov-Sanchez
- ANRS MIE (France Recherche Nord & Sud Sida-HIV Hépatites|Maladies Infectieuses Emergentes), Unit for Basic and Clinical Research on Viral Hepatitis, 73013 Paris, France;
| | - Tarik Asselah
- Université de Paris, Centre de Recherche sur L’inflammation, INSERM UMR1149, 75018 Paris, France;
- Department of Hepatology, AP-HP, Hôpital Beaujon, 92110 Clichy, France
| | - Elisabeth Delarocque-Astagneau
- Université Paris-Saclay, UVSQ, Inserm, CESP, Team Anti-Infective Evasion and Pharmacoepidemiology, 78180 Montigny, France;
- AP-HP, GHU Paris Saclay University, Raymond Poincaré Hospital, Epidemiology and Public Health Department, 92380 Garches, France
| | - Dominique Larrey
- Liver Unit-IRB-INSERM 1183, Hôpital Saint Eloi, 34090 Montpellier, France;
| | - Jean-Charles Duclos-Vallée
- AP-HP Hôpital Paul-Brousse, Centre Hépato-Biliaire, Villejuif, UMR-S 1193, Université Paris-Saclay, FHU HEPATINOV, 94800 Villejuif, France;
| | - Fabrice Carrat
- Hôpital Saint-Antoine, Unité de Santé Publique, Assistance Publique-Hôpitaux de Paris (AP-HP), 75012 Paris, France;
| | - Patrizia Carrieri
- Aix Marseille Univ. Inserm, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l’Information Médicale, ISSPAM, 13005 Marseille, France; (T.B.); (C.R.); (V.D.B.); (C.P.); (F.M.); (M.B.); (M.B.)
- Correspondence:
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25
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Lebeau PF, Byun JH, Platko K, Saliba P, Sguazzin M, MacDonald ME, Paré G, Steinberg GR, Janssen LJ, Igdoura SA, Tarnopolsky MA, Wayne Chen SR, Seidah NG, Magolan J, Austin RC. Caffeine blocks SREBP2-induced hepatic PCSK9 expression to enhance LDLR-mediated cholesterol clearance. Nat Commun 2022; 13:770. [PMID: 35140212 PMCID: PMC8828868 DOI: 10.1038/s41467-022-28240-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 01/05/2022] [Indexed: 01/06/2023] Open
Abstract
Evidence suggests that caffeine (CF) reduces cardiovascular disease (CVD) risk. However, the mechanism by which this occurs has not yet been uncovered. Here, we investigated the effect of CF on the expression of two bona fide regulators of circulating low-density lipoprotein cholesterol (LDLc) levels; the proprotein convertase subtilisin/kexin type 9 (PCSK9) and the low-density lipoprotein receptor (LDLR). Following the observation that CF reduced circulating PCSK9 levels and increased hepatic LDLR expression, additional CF-derived analogs with increased potency for PCSK9 inhibition compared to CF itself were developed. The PCSK9-lowering effect of CF was subsequently confirmed in a cohort of healthy volunteers. Mechanistically, we demonstrate that CF increases hepatic endoplasmic reticulum (ER) Ca2+ levels to block transcriptional activation of the sterol regulatory element-binding protein 2 (SREBP2) responsible for the regulation of PCSK9, thereby increasing the expression of the LDLR and clearance of LDLc. Our findings highlight ER Ca2+ as a master regulator of cholesterol metabolism and identify a mechanism by which CF may protect against CVD.
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Affiliation(s)
- Paul F Lebeau
- Department of Medicine, Division of Nephrology, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Center for Kidney Research, Hamilton, ON, L8N 4A6, Canada
| | - Jae Hyun Byun
- Department of Medicine, Division of Nephrology, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Center for Kidney Research, Hamilton, ON, L8N 4A6, Canada
| | - Khrystyna Platko
- Department of Medicine, Division of Nephrology, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Center for Kidney Research, Hamilton, ON, L8N 4A6, Canada
| | - Paul Saliba
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Matthew Sguazzin
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Melissa E MacDonald
- Department of Medicine, Division of Nephrology, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Center for Kidney Research, Hamilton, ON, L8N 4A6, Canada
| | - Guillaume Paré
- Population Health Research Institute, McMaster University, Hamilton, ON, L8L 2X2, Canada.,The Departments of Medicine, Epidemiology and Pathology, McMaster University, Hamilton, ON, L8L 2X2, Canada.,The Thrombosis and Atherosclerosis Research Institute (TaARI), Department of Medicine, David Braley Research Institute, McMaster University, Hamilton, L8L 2X2, Canada
| | - Gregory R Steinberg
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4L8, Canada.,Centre for Metabolism, Obesity and Diabetes Research, Department of Medicine, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Luke J Janssen
- Firestone Institute for Respiratory Health, St. Joseph's Hospital, Hamilton, ON, L8S 4K1, Canada
| | - Suleiman A Igdoura
- Department of Biology and Pathology, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Mark A Tarnopolsky
- Department of Medicine/Neurology, McMaster University, Hamilton, ON, L8N 3Z5, Canada.,Department of Pediatrics, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - S R Wayne Chen
- Libin Cardiovascular Institute of Alberta, Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, T2N 2T9, Canada
| | - Nabil G Seidah
- Laboratory of Biochemical Neuroendocrinology, Clinical Research Institute of Montreal, affiliated to the University of Montreal, Montreal, QC, H2W 1R7, Canada
| | - Jakob Magolan
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Richard C Austin
- Department of Medicine, Division of Nephrology, McMaster University, The Research Institute of St. Joe's Hamilton and the Hamilton Center for Kidney Research, Hamilton, ON, L8N 4A6, Canada. .,The Thrombosis and Atherosclerosis Research Institute (TaARI), Department of Medicine, David Braley Research Institute, McMaster University, Hamilton, L8L 2X2, Canada.
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Watanabe J, Miki A, Koizumi M, Kotani K, Sata N. Effect of Postoperative Coffee Consumption on Postoperative Ileus after Abdominal Surgery: An Updated Systematic Review and Meta-Analysis. Nutrients 2021; 13:nu13124394. [PMID: 34959946 PMCID: PMC8708428 DOI: 10.3390/nu13124394] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Previous systematic reviews have not clarified the effect of postoperative coffee consumption on the incidence of postoperative ileus (POI) and the length of hospital stay (LOS). We aimed to assess its effect on these postoperative outcomes. METHODS Studies evaluating postoperative coffee consumption were searched using electronic databases until September 2021 to perform random-effect meta-analysis. The quality of evidence was assessed using the Cochrane risk-of-bias tool. Caffeinated and decaffeinated coffee were also compared. RESULTS Thirteen trials (1246 patients) and nine ongoing trials were included. Of the 13 trials, 6 were on colorectal surgery, 5 on caesarean section, and 2 on gynecological surgery. Coffee reduced the time to first defecation (mean difference (MD) -10.1 min; 95% confidence interval (CI) = -14.5 to -5.6), POI (risk ratio 0.42; 95% CI = 0.26 to 0.69); and LOS (MD -1.5; 95% CI = -2.7 to -0.3). This trend was similar in colorectal and gynecological surgeries. Coffee had no adverse effects. There was no difference in POI or LOS between caffeinated and decaffeinated coffee (p > 0.05). The certainty of evidence was low to moderate. CONCLUSION This review showed that postoperative coffee consumption, regardless of caffeine content, likely reduces POI and LOS after colorectal and gynecological surgery.
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Affiliation(s)
- Jun Watanabe
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Shimotsuke-City 329-0498, Japan; (A.M.); (M.K.); (N.S.)
- Division of Community and Family Medicine, Jichi Medical University, Shimotsuke-City 329-0498, Japan;
- Correspondence: ; Tel.: +81-285-58-7371; Fax: +81-285-44-3234
| | - Atsushi Miki
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Shimotsuke-City 329-0498, Japan; (A.M.); (M.K.); (N.S.)
| | - Masaru Koizumi
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Shimotsuke-City 329-0498, Japan; (A.M.); (M.K.); (N.S.)
| | - Kazuhiko Kotani
- Division of Community and Family Medicine, Jichi Medical University, Shimotsuke-City 329-0498, Japan;
| | - Naohiro Sata
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, Shimotsuke-City 329-0498, Japan; (A.M.); (M.K.); (N.S.)
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27
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Wang LT, He PC, Li AQ, Cao KX, Yan JW, Guo S, Jiang L, Yao L, Dai XY, Feng D, Xu YM, Tan N. Caffeine promotes angiogenesis through modulating endothelial mitochondrial dynamics. Acta Pharmacol Sin 2021; 42:2033-2045. [PMID: 33664417 PMCID: PMC8632980 DOI: 10.1038/s41401-021-00623-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 02/07/2021] [Indexed: 11/09/2022] Open
Abstract
Caffeine induces multiple vascular effects. In this study we investigated the angiogenic effect of physiological concentrations of caffeine with focus on endothelial cell behaviors (migration and proliferation) during angiogenesis and its mitochondrial and bioenergetic mechanisms. We showed that caffeine (10-50 μM) significantly enhanced angiogenesis in vitro, evidenced by concentration-dependent increases in tube formation, and migration of human umbilical vein endothelial cells (HUVECs) without affecting cell proliferation. Caffeine (50 μM) enhanced endothelial migration via activation of cAMP/PKA/AMPK signaling pathway, which was mimicked by cAMP analog 8-Br-cAMP, and blocked by PKA inhibitor H89, adenylate cyclase inhibitor SQ22536 or AMPK inhibitor compound C. Furthermore, caffeine (50 μM) induced significant mitochondrial shortening through the increased phosphorylation of mitochondrial fission protein dynamin-related protein 1 (Drp1) in HUVECs, which increased its activity to regulate mitochondrial fission. Pharmacological blockade of Drp1 by Mdivi-1 (10 μM) or disturbance of mitochondrial fission by Drp1 silencing markedly suppressed caffeine-induced lamellipodia formation and endothelial cell migration. Moreover, we showed that caffeine-induced mitochondrial fission led to accumulation of more mitochondria in lamellipodia regions and augmentation of mitochondrial energetics, both of which were necessary for cell migration. In a mouse model of hindlimb ischemia, administration of caffeine (0.05% in 200 mL drinking water daily, for 14 days) significantly promoted angiogenesis and perfusion as well as activation of endothelial AMPK signaling in the ischemic hindlimb. Taken together, caffeine induces mitochondrial fission through cAMP/PKA/AMPK signaling pathway. Mitochondrial fission is an integral process in caffeine-induced endothelial cell migration by altering mitochondrial distribution and energetics.
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Affiliation(s)
- Li-Tao Wang
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510100, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510100, China
| | - Peng-Cheng He
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510100, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510100, China
| | - An-Qi Li
- Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China
- State Key Lab of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Kai-Xiang Cao
- Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China
- State Key Lab of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jing-Wei Yan
- Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China
- State Key Lab of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Shuai Guo
- Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China
- State Key Lab of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Lei Jiang
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510100, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510100, China
| | - Lin Yao
- School of Pharmaceutical Sciences, South China Research Center for Acupuncture and Moxibustion, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xiao-Yan Dai
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Du Feng
- Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China
- State Key Lab of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yi-Ming Xu
- Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China.
- State Key Lab of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China.
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China.
| | - Ning Tan
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510100, China.
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510100, China.
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Abstract
Purpose of Review Coffee is a very popular drink and an estimated 2.25 billion cups worldwide are consumed daily. Such popularity of coffee makes it the most consumed drink next to water. Numerous studies have shown a beneficial effect of habitual and moderate coffee consumption on the functioning of the nervous, digestive, and cardiovascular systems, as well as on kidney function. Taking into account the very high prevalence of arterial hypertension in the world (31.1% of adults), much controversy has been raised about the influence of coffee consumption on blood pressure and the risk of arterial hypertension. Moreover, there have been extensive discussions about the safety of coffee consumption for hypertensive persons. Recent Findings There are over 1000 chemical compounds in coffee. The best characterized of these are caffeine, chlorogenic acid, trigonelline, kahweol, cafestol, ferulic acid, and melanoidins. These compounds have bidirectional influences on blood pressure regulation. The results of numerous studies and meta-analyses indicate that moderate and habitual coffee consumption does not increase and may even reduce the risk of developing arterial hypertension. Conversely, occasional coffee consumption has hypertensinogenic effects. Moderate habitual coffee consumption in hypertensive persons does not appear to increase the risk of uncontrolled blood pressure and may even reduce the risk of death from any cause. Summary Moderate and habitual consumption of coffee (1-–3 cups / day) does not adversely affect blood pressure in most people, including those with arterial hypertension.
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Lassen ML, Byrne C, Sheykhzade M, Wissenberg M, Hurry PK, Schmedes AV, Kjaer A, Hasbak P. Gender differences and caffeine impact in adenosine-induced hyperemia. J Nucl Med 2021; 63:431-437. [PMID: 34244355 PMCID: PMC8978189 DOI: 10.2967/jnumed.121.261970] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 06/29/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Caffeine consumption before adenosine stress myocardial perfusion imaging (MPI) is known to affect the hemodynamic response and, thus, reduce the stress myocardial blood flow (MBF) and myocardial flow reserve (MFR) assessments. However, it is not clear if any gender-specific differences in the hemodynamic response following caffeine consumption exist. This study aimed to evaluate if such differences exist and, if so, their impact on MBF and MFR assessments. Methods: This study comprised 40 healthy volunteers (19 women). All volunteers underwent four serial rest/stress MPI sessions employing Rubidium-82; two sessions were acquired without controlled caffeine consumption, and two sessions following oral ingestion of either 100mg and 300mg caffeine or 200mg and 400mg caffeine. For the caffeine imaging sessions, caffeine was ingested orally 1hr before the MPI scan. Results: Increase in plasma caffeine concentration (PCC) (mg/l) following consumption of caffeine was larger in women (MPI session without caffeine vs. MPI session with caffeine: women = 0.3±0.2 vs. 5.4±5.1, men = 0.1±0.2 vs. 2.7±2.6, both p<0.001). Caffeine consumption led to reduced stress MBF and MFR assessments for men while no changes were reported for women (women (PCC<1mg/l vs PCC≥1mg/l): stress MBF = 3.3±0.6 vs. 3.0±0.8 ml/g/min, P = 0.07; MFR = 3.7±0.6 vs. 3.5±1.0, P = 0.35; Men (PCC<1mg/l vs PCC≥1mg/l): stress MBF= 2.7±0.7 vs. 2.1±1.0 ml/g/min, P = 0.005, MFR = 3.8±1.0 vs. 3.1±1.4, P = 0.018). Significant differences in the stress MBF were observed for the two genders (both p≤0.001), while similar MFR were reported (both p≥0.12). Conclusion: Associations between increases in PCC and reductions in stress MBF and MFR were observed for men, while women did not have the same hemodynamic response. Stress MBF was affected at lower plasma caffeine concentrations in men than women.
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Affiliation(s)
| | | | | | | | | | | | - Andreas Kjaer
- Rigshospitalet, Copenhagen University Hospital, Denmark
| | - Philip Hasbak
- Rigshospitalet,Copenhagen University Hospital, Denmark
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30
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Manolis AA, Manolis TA, Apostolopoulos EJ, Melita H, Manolis AS. The Cardiovascular Benefits of Caffeinated Beverages: Real or Surreal? /"Metron Ariston - All in Moderation". Curr Med Chem 2021; 29:2235-2260. [PMID: 34238147 DOI: 10.2174/0929867328666210708091709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/22/2021] [Accepted: 05/27/2021] [Indexed: 11/22/2022]
Abstract
Caffeinated beverages are the most widely consumed beverages globally with coffee and tea as the two most prominent sources of caffeine. Caffeine content varies across different types of beverages. In addition to caffeine, coffee and tea have other biologically active compounds, and all may affect general and cardiovascular (CV) health. Moderate caffeine consumption (<300-400 mg/day), regardless of the source, is considered safe by both European and US Health Authorities, as it is not associated with adverse health and CV effects, while it may confer certain health benefits. There is a nonlinear association between coffee ingestion and CV risk; moderate coffee drinking is inversely significantly associated with CV risk, with the highest benefit at 2-4 cups per day, while heavy coffee drinking might confer increased risk. With regards to tea, due to a lower caffeine content per serving, its consumption is only limited by the total caffeine daily intake. Both these caffeinated beverages, coffee and tea, have additional phenolic compounds, with anti-oxidant and anti-inflammatory activities, which confer cardioprotective benefits. Of the several coffee compounds, chloroacetic acids and melanoidins offer such beneficial effects, while diterpenes may have unfavorable effects on lipids. Most of the tea ingredients (polyphenols) are cardioprotective. A major concern relates to energy drinks with their much higher caffeine content which puts individuals, especially adolescents and young adults, at high health and CV risk. All these issues are herein discussed, including pertinent studies and meta-analyses, pathogenetic mechanisms involved and relevant recommendations from health authorities.
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Affiliation(s)
| | | | | | | | - Antonis S Manolis
- First Department of Cardiology, Athens University School of Medicine, Athens, Greece
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31
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Gibbon JR, Frith J. The effects of caffeine in adults with neurogenic orthostatic hypotension: a systematic review. Clin Auton Res 2021; 31:499-509. [PMID: 34143333 PMCID: PMC8212790 DOI: 10.1007/s10286-021-00814-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 06/12/2021] [Indexed: 01/27/2023]
Abstract
Purpose To systematically review the evidence base for the effectiveness and safety of caffeine for the treatment of neurogenic orthostatic hypotension in adults. Methods Eight electronic databases were searched in January 2021. Original research studies or case reports involving adults with neurogenic orthostatic hypotension were included if caffeine was an intervention and outcomes included symptoms, blood pressure or adverse effects. Relevant studies were screened and underwent qualitative analysis. Insufficient reporting precluded meta-analysis. Results Five studies were identified: four crossover studies and one case report summation. Study size ranged from 5 to 16 participants. Participants had neurogenic orthostatic hypotension, with a mean standing systolic blood pressure of 86 mmHg. Two studies evaluated caffeine alone. Three studies administered caffeine in combination with ergotamine. Caffeine dose ranged from 100 to 300 mg. Nature and timing of outcomes measured varied between studies, with measurements being recorded from 30 to 480 min after intervention. Caffeine/ergotamine improved symptoms in one study and reduced orthostatic blood pressure drop in two studies. Caffeine/ergotamine increased seated blood pressure in three studies, whilst the results for caffeine alone were inconsistent. No serious adverse events were reported. All studies demonstrated high risk of bias. Conclusion Caffeine should only be considered as a treatment for adults with neurogenic orthostatic hypotension when evidence-based treatments have been exhausted. Systematic review registration PROSPERO ID: CRD42020124589. Date of registration: 30/10/2020 Supplementary Information The online version contains supplementary material available at 10.1007/s10286-021-00814-5.
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Affiliation(s)
- Jake Ryan Gibbon
- Population Health Sciences Institute, Newcastle University, Newcastle Upon Tyne, UK.
| | - James Frith
- Population Health Sciences Institute, Newcastle University, Newcastle Upon Tyne, UK
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Beller E, Lorbeer R, Keeser D, Galiè F, Meinel FG, Grosu S, Bamberg F, Storz C, Schlett CL, Peters A, Schneider A, Linseisen J, Meisinger C, Rathmann W, Ertl-Wagner B, Stoecklein S. Significant Impact of Coffee Consumption on MR-Based Measures of Cardiac Function in a Population-Based Cohort Study without Manifest Cardiovascular Disease. Nutrients 2021; 13:nu13041275. [PMID: 33924572 PMCID: PMC8069927 DOI: 10.3390/nu13041275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/28/2021] [Accepted: 04/06/2021] [Indexed: 12/17/2022] Open
Abstract
Subclinical effects of coffee consumption (CC) with regard to metabolic, cardiac, and neurological complications were evaluated using a whole-body magnetic resonance imaging (MRI) protocol. A blended approach was used to estimate habitual CC in a population-based study cohort without a history of cardiovascular disease. Associations of CC with MRI markers of gray matter volume, white matter hyperintensities, cerebral microhemorrhages, total and visceral adipose tissue (VAT), hepatic proton density fat fraction, early/late diastolic filling rate, end-diastolic/-systolic and stroke volume, ejection fraction, peak ejection rate, and myocardial mass were evaluated by linear regression. In our analysis with 132 women and 168 men, CC was positively associated with MR-based cardiac function parameters including late diastolic filling rate, stroke volume (p < 0.01 each), and ejection fraction (p < 0.05) when adjusting for age, sex, smoking, hypertension, diabetes, Low-density lipoprotein (LDL), triglycerides, cholesterol, and alcohol consumption. CC was inversely associated with VAT independent of demographic variables and cardiovascular risk factors (p < 0.05), but this association did not remain significant after additional adjustment for alcohol consumption. CC was not significantly associated with potential neurodegeneration. We found a significant positive and independent association between CC and MRI-based systolic and diastolic cardiac function. CC was also inversely associated with VAT but not independent of alcohol consumption.
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Affiliation(s)
- Ebba Beller
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Center Rostock, 18057 Rostock, Germany;
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (R.L.); (D.K.); (F.G.); (S.G.); (S.S.)
- Correspondence: ; Tel.: +49-(0)381-494-9201; Fax: +49-(0)381-494-9202
| | - Roberto Lorbeer
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (R.L.); (D.K.); (F.G.); (S.G.); (S.S.)
| | - Daniel Keeser
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (R.L.); (D.K.); (F.G.); (S.G.); (S.S.)
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilians University Hospital LMU, 80336 Munich, Germany
- Munich Center for Neurosciences (MCN)–Brain & Mind, 82152 Planegg-Martinsried, Germany
| | - Franziska Galiè
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (R.L.); (D.K.); (F.G.); (S.G.); (S.S.)
| | - Felix G. Meinel
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Sergio Grosu
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (R.L.); (D.K.); (F.G.); (S.G.); (S.S.)
| | - Fabian Bamberg
- Department of Diagnostic and Interventional Radiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (F.B.); (C.L.S.)
- University Heart Center Freiburg-Bad Krozingen, 79189 Bad Krozingen, Germany
| | - Corinna Storz
- Department of Neuroradiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, 79098 Freiburg, Germany;
| | - Christopher L. Schlett
- Department of Diagnostic and Interventional Radiology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; (F.B.); (C.L.S.)
- University Heart Center Freiburg-Bad Krozingen, 79189 Bad Krozingen, Germany
| | - Annette Peters
- Institute of Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.P.); (A.S.)
- LMU Munich, IBE-Chair of Epidemiology, 85764 Neuherberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80802 Munich, Germany
| | - Alexandra Schneider
- Institute of Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.P.); (A.S.)
| | - Jakob Linseisen
- Independent Research Group Clinical Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany;
- Ludwig-Maximilians Universität München, UNIKA-T Augsburg, 86156 Augsburg, Germany;
| | - Christa Meisinger
- Ludwig-Maximilians Universität München, UNIKA-T Augsburg, 86156 Augsburg, Germany;
| | - Wolfgang Rathmann
- German Diabetes Center, Institute of Biometrics and Epidemiology, Leibniz Institute at Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany;
| | - Birgit Ertl-Wagner
- Department of Medical Imaging, The Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada;
| | - Sophia Stoecklein
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (R.L.); (D.K.); (F.G.); (S.G.); (S.S.)
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Tanghe A, Heyman E, Vanden Wyngaert K, Van Ginckel A, Celie B, Rietzschel E, Calders P, Shadid S. Evaluation of blood pressure lowering effects of cocoa flavanols in diabetes mellitus: A systematic review and meta-analysis. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104399] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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34
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Tanghe A, Celie B, Shadid S, Rietzschel E, Op 't Roodt J, Reesink KD, Heyman E, Calders P. Acute Effects of Cocoa Flavanols on Blood Pressure and Peripheral Vascular Reactivity in Type 2 Diabetes Mellitus and Essential Hypertension: A Protocol for an Acute, Randomized, Double-Blinded, Placebo-Controlled Cross-Over Trial. Front Cardiovasc Med 2021; 8:602086. [PMID: 33791343 PMCID: PMC8005536 DOI: 10.3389/fcvm.2021.602086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/16/2021] [Indexed: 01/21/2023] Open
Abstract
Introduction: Patients with type 2 diabetes mellitus are at high risk to develop vascular complications resulting in high morbidity and mortality. Cocoa flavanols are promising nutraceuticals with possible beneficial vascular effects in humans. However, limited research is currently available on the vascular effects in a diabetic population with inconsistent results. Possible reasons for this inconsistency might be heterogeneity in the given intervention (dose per time and day, single dose vs. split-dose, placebo formula) and the studied population (blood pressure at baseline, duration of diabetes, use of vasoactive antihypertensive and antidiabetic drugs, sex). Therefore, we aimed to develop a randomized, double-blinded, placebo-controlled cross-over trial to investigate whether cocoa flavanols have an acute impact on blood pressure and vascular reactivity in patients with type 2 diabetes with and without arterial hypertension. Methods and Analysis: We will include participants in four groups: (i) patients with type 2 diabetes without arterial hypertension, (ii) patients with type 2 diabetes with arterial hypertension and 1 antihypertensive drug, (iii) non-diabetic participants with essential hypertension and 1 antihypertensive drug, and (iv) healthy controls. All participants will complete the same protocol on both testing days, consuming high-flavanol cocoa extract (790 mg flavanols) or placebo. Macrovascular endothelial function (flow-mediated dilation) and blood pressure will be measured before and after capsule ingestion. Forearm muscle vasoreactivity (near-infrared spectroscopy) and brachial artery blood flow (echo-doppler) will be assessed in response to a dynamic handgrip exercise test after capsule ingestion. Data will be analyzed with a random intercept model in mixed models. Clinical Trial Registration:www.Clinicaltrials.gov, identifier: NCT03722199.
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Affiliation(s)
- Anouk Tanghe
- Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium.,Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, Lille, France
| | - Bert Celie
- Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium.,Faculty of Health Sciences, Sport, Exercise Medicine and Lifestyle Institute (SEMLI), University of Pretoria, Pretoria, South Africa
| | - Samyah Shadid
- Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
| | - Ernst Rietzschel
- Department of Cardiology, Ghent University Hospital, Ghent, Belgium.,Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - Jos Op 't Roodt
- School of Cardiovascular Diseases (CARIM), Maastricht University Medical Centre, Maastricht, Netherlands
| | - Koen D Reesink
- School of Cardiovascular Diseases (CARIM), Maastricht University Medical Centre, Maastricht, Netherlands
| | - Elsa Heyman
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, Lille, France
| | - Patrick Calders
- Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium
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Kitano T, Okajima M, Sato K, Noda T, Taniguchi T. Suicidal attempt with caffeine overdose treated with dexmedetomidine: a case report. J Med Case Rep 2021; 15:11. [PMID: 33451341 PMCID: PMC7811210 DOI: 10.1186/s13256-020-02611-6] [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: 09/01/2020] [Accepted: 11/30/2020] [Indexed: 01/21/2023] Open
Abstract
Background Caffeine is a widely used dietary stimulant, and cases of caffeine overdoses, sometimes leading to death, are increasing. We encountered a case of caffeine intoxication resolved with administration of the sedative agent dexmedetomidine. Case presentation We administered dexmedetomidine for sedation and to suppress sympathetic nerve stimulation in the case of an 18-year-old Japanese male who ingested a massive dose of caffeine with the intention of committing suicide. The patient was in an excited state and had hypertension, sinus tachycardia, and hypokalemia with prominent QT prolongation. After dexmedetomidine administration, the patient’s mental state, hemodynamics, and electrolyte levels were improved immediately. He was discharged without any sequelae 3 days later. Conclusion Cases of acute caffeine intoxication with agitation, sympathetic overactivity and adverse cardiac events would benefit with dexmedetomidine treatment.
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Affiliation(s)
- Teppei Kitano
- Intensive Care Unit, Kanazawa University Hospital, Kanazawa, 920-8641, Japan
| | - Masaki Okajima
- Intensive Care Unit, Kanazawa University Hospital, Kanazawa, 920-8641, Japan.
| | - Koji Sato
- Intensive Care Unit, Kanazawa University Hospital, Kanazawa, 920-8641, Japan
| | - Toru Noda
- Intensive Care Unit, Kanazawa University Hospital, Kanazawa, 920-8641, Japan
| | - Takumi Taniguchi
- Intensive Care Unit, Kanazawa University Hospital, Kanazawa, 920-8641, Japan
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Anti-Platelet Aggregation and Anti-Cyclooxygenase Activities for a Range of Coffee Extracts ( Coffea arabica). Molecules 2020; 26:molecules26010010. [PMID: 33375091 PMCID: PMC7792775 DOI: 10.3390/molecules26010010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 01/24/2023] Open
Abstract
Coffee is rich in caffeine (CF), chlorogenic acid (CGA) and phenolics. Differing types of coffee beverages and brewing procedures may result in differences in total phenolic contents (TPC) and biological activities. Inflammation and increases of platelet activation and aggregation can lead to thrombosis. We focused on determining the chemical composition, antioxidant activity and inhibitory effects on agonist-induced platelet aggregation and cyclooxygenase (COX) of coffee beverages in relation to their preparation method. We prepared instant coffee and brewed coffee beverages using drip, espresso, and boiling techniques. Coffee extracts were assayed for their CF and CGA contents using HPLC, TPC using colorimetry, platelet aggregation with an aggregometer, and COX activity using ELISA. The findings have shown all coffee extracts, except the decaffeinated types, contained nearly equal amounts of CF, CGA, and TPC. Inhibitory effects of coffee extracts on platelet aggregation differed depending on the activation pathways induced by different agonists. All espresso, drip and boiled coffee extracts caused dose dependent inhibition of platelet aggregation induced by ADP, collagen, epinephrine, and arachidonic acid (ARA). The most marked inhibition was seen at low doses of collagen or ARA. Espresso and drip extracts inhibited collagen-induced platelet aggregation more than purified caffeine or CGA. Espresso, boiled and drip coffee extracts were also a more potent inhibitors of COX-1 and COX-2 than purified caffeine or CGA. We conclude that inhibition of platelet aggregation and COX-1 and COX-2 may contribute to anti-platelet and anti-inflammatory effects of espresso and drip coffee extracts.
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Samanta S. Potential Bioactive Components and Health Promotional Benefits of Tea (Camellia sinensis). J Am Coll Nutr 2020; 41:65-93. [DOI: 10.1080/07315724.2020.1827082] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Saptadip Samanta
- Department of Physiology, Midnapore College, Midnapore, West Bengal, India
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38
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Oboh G, Ojueromi OO, Ademosun AO, Omayone TP, Oyagbemi AA, Ajibade TO, Adedapo AA. Effects of caffeine and caffeic acid on selected biochemical parameters in L-NAME-induced hypertensive rats. J Food Biochem 2020; 45:e13384. [PMID: 32725646 DOI: 10.1111/jfbc.13384] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 06/27/2020] [Accepted: 06/28/2020] [Indexed: 12/12/2022]
Abstract
Biologically active compounds such as caffeine and caffeic acid can be obtained in plants especially cocoa and coffee. Hence, the combinatory effect of caffeine and caffeic acid as well as their individual effect were assessed on the activities of arginase, angiotensin-1-converting enzyme (ACE) as well as nitric oxide (NOx), and malondialdehyde (MDA) level in the Nω-Nitro-L-arginine-methylester (L-NAME)-induced hypertensive rats. The individual and combinatory effect of caffeine and caffeic acid were investigated in L-NAME-induced rats. Animals were grouped into eleven containing six animals each. Hemodynamic parameter was determined by tail-cuff plethysmography. Furthermore, the result showed a notable rise in ACE and arginase activities of L-NAME-induced group compared with the control group. However, pretreatment with test compounds lowered ACE, arginase activities, and MDA content with rise in NOx. This study supports that caffeine and caffeic acid combinations demonstrated antihypertensive properties by lowering the systolic blood pressure in L-NAME-induced rats. PRATICAL APPLICATIONS: This duo bioactive compounds; caffeine (alkaloid) and caffeic acid (phenolic acid) are lavishly distributed in coffee. Their cardiopotective and cardiomodulatory roles have been investigated due to their biological activities. As far as we are aware, this could be foremost in-depth study on the antihypertensive and cardioprotective effect of the combinations of caffeine and caffeic acid targeting the key enzymes system relevant to hypertension. Decreased ACE and arginase activities as well as high nitric oxide (NOx) and low MDA level may be associated with its antihypertensive effect. This present study suggests that the combinations of this phenolics and alkaloid compound might proffer a therapeutic strategy in the management of hypertension.
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Affiliation(s)
- Ganiyu Oboh
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - Opeyemi Oluwafemi Ojueromi
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - Ayokunle Olubode Ademosun
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | | | - Ademola Adetokunbo Oyagbemi
- Department of veterinary physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Temitayo Olabisi Ajibade
- Department of veterinary physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Adeolu Alex Adedapo
- Department of veterinary physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
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D'Alessandro A, Fu X, Reisz JA, Kanias T, Page GP, Stone M, Kleinman S, Zimring JC, Busch M. Stored RBC metabolism as a function of caffeine levels. Transfusion 2020; 60:1197-1211. [PMID: 32394461 DOI: 10.1111/trf.15813] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/04/2020] [Accepted: 03/11/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Coffee consumption is extremely common in the United States. Coffee is rich with caffeine, a psychoactive, purinergic antagonist of adenosine receptors, which regulate red blood cell energy and redox metabolism. Since red blood cell (purine) metabolism is a critical component to the red cell storage lesion, here we set out to investigate whether caffeine levels correlated with alterations of energy and redox metabolism in stored red blood cells. STUDY DESIGN AND METHODS We measured the levels of caffeine and its main metabolites in 599 samples from the REDS-III RBC-Omics (Recipient Epidemiology Donor Evaluation Study III Red Blood Cell-Omics) study via ultra-high-pressure-liquid chromatography coupled to high-resolution mass spectrometry and correlated them to global metabolomic and lipidomic analyses of RBCs stored for 10, 23, and 42 days. RESULTS Caffeine levels positively correlated with increased levels of the main red cell antioxidant, glutathione, and its metabolic intermediates in glutathione-dependent detoxification pathways of oxidized lipids and sugar aldehydes. Caffeine levels were positively correlated with transamination products and substrates, tryptophan, and indole metabolites. Expectedly, since caffeine and its metabolites belong to the family of xanthine purines, all xanthine metabolites were significantly increased in the subjects with the highest levels of caffeine. However, high-energy phosphate compounds ATP and DPG were not affected by caffeine levels, despite decreases in glucose oxidation products-both via glycolysis and the pentose phosphate pathway. CONCLUSION Though preliminary, this study is suggestive of a beneficial correlation between the caffeine levels and improved antioxidant capacity of stored red cells.
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Affiliation(s)
- Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, Colorado.,Vitalant Research Institute, Denver, Colorado.,Department of Pathology, University of Colorado Denver, Aurora, Colorado
| | - Xiaoyun Fu
- BloodWorks Northwest, Seattle, Washington
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, Colorado
| | - Tamir Kanias
- Vitalant Research Institute, Denver, Colorado.,Department of Pathology, University of Colorado Denver, Aurora, Colorado
| | | | - Mars Stone
- Vitalant Research Institute, San Francisco, California
| | - Steve Kleinman
- University of British Columbia, Victoria, British Columbia, Canada
| | | | - Michael Busch
- Vitalant Research Institute, San Francisco, California
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Conflicting Effects of Coffee Consumption on Cardiovascular Diseases: Does Coffee Consumption Aggravate Pre-existing Risk Factors? Processes (Basel) 2020. [DOI: 10.3390/pr8040438] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Coffee is one of the most popular beverages worldwide. Its effect on health is generally regarded as beneficial in many studies. However, there are growing concerns about the adverse effect of coffee consumption on cardiovascular disease (CVD) due to the potential aggravating impact on the cardiovascular system attributed to various compounds within coffee. This review is focused on deteriorative effects of coffee consumption on CVDs with possible mechanisms. Patients with risk factors of CVDs should prudently consider heavy consumption of coffee as it may exacerbate hypertension, dyslipidemia, and atherosclerosis, and increase the odds of cardiovascular events. J-shaped or U-shaped dose-response graphs of coffee consumption and CVD parameters partially explain the inconsistency of conclusions between coffee studies on CVD, highlighting a moderate intake of coffee. Moreover, there are discrepancies in results from clinical studies elucidating considerable influences of confounding factors including gender and smoking status on outcomes of those conducted to reveal the actual impact of coffee consumption on CVDs. Physical features of subjects including genetic variations and body mass index (BMI) make it difficult to determine moderate intake of coffee for individuals in terms of caffeine metabolism. Further epidemiological studies with consideration about characteristics of the study population are needed to determine the exact effect of coffee consumption on CVD.
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Hashim RT, Alkhalifah SS, Alsalman AA, Alfaris DM, Alhussaini MA, Qasim RS, Shaik SA. Prevalence of primary dysmenorrhea and its effect on the quality of life amongst female medical students at King Saud University, Riyadh, Saudi Arabia. A cross-sectional study. Saudi Med J 2020; 41:283-289. [PMID: 32114601 PMCID: PMC7841556 DOI: 10.15537/smj.2020.3.24988] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objectives: To quantify the prevalence of primary dysmenorrhea, study its associated factors, and to assess its effect on the quality of life of female medical students. Methods: A cross-sectional study was conducted among 376 female medical students at King Saud University student campus and King Khalid University Hospital (KKUH), Riyadh, Saudi Arabia, between September 2017 and May 2018. The study was conducted using a consecutive, non-random sampling technique. Results: The prevalence of primary dysmenorrhea among female medical students was 80.1%; most of the participants (n=134) reported moderate pain (49.8%). Primary dysmenorrhea was significantly associated with caffeine consumption (p<0.05) and did not show an association with factors, body mass index, diet, lack of physical activity, and smoking. Among the SF-36 domains, the 4 domains physical health (p<0.001) and emotional health (p=0.01) including health changes (p=0.033) and pain (p<0.001) were statistically significantly affected by dysmenorrhea. Primary dysmenorrhea also had a significant impact on the students’ academic performance where a higher proportion of students suffering from primary dysmenorrhea showed negative effects on their attendance, concentration, study time, and participation in class. Conclusion: Most female medical students suffer from primary dysmenorrhea, which adversely affects their quality of life and academic performance. Caffeine consumption demonstrated a significant association with primary dysmenorrhea. Periodical awareness programs to minimize the consequences of primary dysmenorrhea should be introduced.
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Affiliation(s)
- Refan T Hashim
- College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia. E-mail.
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Corrigendum to "Caffeine's Vascular Mechanisms of Action". Int J Vasc Med 2020; 2019:7480780. [PMID: 32089886 PMCID: PMC7012199 DOI: 10.1155/2019/7480780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 02/12/2019] [Indexed: 11/24/2022] Open
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Ruíz-Moreno C, Lara B, Brito de Souza D, Gutiérrez-Hellín J, Romero-Moraleda B, Cuéllar-Rayo Á, Del Coso J. Acute caffeine intake increases muscle oxygen saturation during a maximal incremental exercise test. Br J Clin Pharmacol 2020; 86:861-867. [PMID: 31782534 DOI: 10.1111/bcp.14189] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/03/2019] [Accepted: 11/19/2019] [Indexed: 01/13/2023] Open
Abstract
AIMS The main mechanism behind caffeine's ergogenicity lies in its tendency to bind to adenosine receptors, although other mechanisms might be involved. The aim of this investigation was to analyse the effects of caffeine on muscle oxygen saturation during exercise of increasing intensity. METHODS Thirteen healthy and active individuals volunteered to participate in a randomized, double blind, placebo-controlled crossover trial. During 2 different trials, participants either ingested a placebo (cellulose) or 3 mg/kg of caffeine. After waiting for 60 min to absorb the substances, participants underwent a maximal ramp cycle ergometer test (25 W/min). Near infrared spectrometers were positioned on each leg's vastus lateralis to monitor tissue O2 saturation. Blood lactate concentration was measured 1 min after the end of the exercise test. RESULTS In comparison to the placebo, the ingestion of caffeine improved the maximal wattage (258 ± 50 vs 271 ± 54 W, respectively, P < .001, effect size [ES] = 0.27; 95% confidence interval [CI] 0.14-0.35) and blood lactate concentration (11.9 ± 3.8 vs 13.7 ± 3.5 mmol/L, P = .029, ES = 0.38; 95% CI 0.14-0.75) at the end of the test. Caffeine increased muscle oxygen saturation at several exercise workloads with a main effect found in respect to the placebo (F = 6.28, P = .029; ES = 0.30 to 0.54; 95% CI 0.01-0.78). Peak pulmonary ventilation (124 ± 29 vs 129 ± 23 L/min, P = 0.035, ES = 0.25; 95% CI 0.07-0.40) and peak oxygen uptake (3.18 ± 0.70 vs 3.33 ± 0.88 L/min, P = 0.032, ES = 0.26; 95% CI 0.08-0.51) were also increased with caffeine. CONCLUSION Acute ingestion of 3 mg/kg of caffeine improved peak aerobic performance and increased peak pulmonary ventilation. In addition, caffeine induced changes in muscle oxygen saturation during submaximal workloads, suggesting that this mechanism might also contribute to caffeine's ergogenic effect.
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Affiliation(s)
- Carlos Ruíz-Moreno
- Exercise Physiology Laboratory, Camilo José Cela University, Madrid, Spain
| | - Beatriz Lara
- Exercise Physiology Laboratory, Camilo José Cela University, Madrid, Spain
| | | | - Jorge Gutiérrez-Hellín
- Exercise Physiology Laboratory, Camilo José Cela University, Madrid, Spain.,Exercise and Sport Sciences, Faculty of Health Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | | | - Ángel Cuéllar-Rayo
- Exercise Physiology Laboratory, Camilo José Cela University, Madrid, Spain
| | - Juan Del Coso
- Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, Spain
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44
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Time course of tolerance to adverse effects associated with the ingestion of a moderate dose of caffeine. Eur J Nutr 2020; 59:3293-3302. [DOI: 10.1007/s00394-019-02167-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 12/17/2019] [Indexed: 12/15/2022]
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45
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Proctocolitis From Coffee Enema. ACG Case Rep J 2020; 7:e00292. [PMID: 32309489 PMCID: PMC7145153 DOI: 10.14309/crj.0000000000000292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 10/22/2019] [Indexed: 11/17/2022] Open
Abstract
Coffee enemas are often used by naturopathic practitioners to treat a number of diseases, including cancer. However, there is no supportive evidence, and its use comes with major risks. We report a case of proctocolitis in a healthy patient after coffee enema treatment. To our knowledge, only 3 other cases of this adverse effect exist in the literature.
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46
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Caffeine and Clinical Outcomes in Premature Neonates. CHILDREN-BASEL 2019; 6:children6110118. [PMID: 31653108 PMCID: PMC6915633 DOI: 10.3390/children6110118] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/29/2019] [Accepted: 10/06/2019] [Indexed: 12/22/2022]
Abstract
Caffeine is the most widely used drug by both adults and children worldwide due to its ability to promote alertness and elevate moods. It is effective in the management of apnea of prematurity in premature infants. Caffeine for apnea of prematurity reduces the incidence of bronchopulmonary dysplasia in very-low-birth-weight infants and improves survival without neurodevelopmental disability at 18-21 months. Follow-up studies of the infants in the Caffeine for Apnea of Prematurity trial highlight the long-term safety of caffeine in these infants, especially relating to motor, behavioral, and intelligence skills. However, in animal models, exposure to caffeine during pregnancy and lactation adversely affects neuronal development and adult behavior of their offspring. Prenatal caffeine predisposes to intrauterine growth restriction and small growth for gestational age at birth. However, in-utero exposure to caffeine is also associated with excess growth, obesity, and cardio-metabolic changes in children. Caffeine therapy is a significant advance in newborn care, conferring immediate benefits in preterm neonates. Studies should help define the appropriate therapeutic window for caffeine treatment along with with the mechanisms relating to its beneficial effects on the brain and the lung. The long-term consequences of caffeine in adults born preterm are being studied and may depend on the ability of caffeine to modulate both the expression and the maturation of adenosine receptors in infants treated with caffeine.
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47
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Crooks E, Hansen DA, Satterfield BC, Layton ME, Van Dongen HPA. Cardiac autonomic activity during sleep deprivation with and without caffeine administration. Physiol Behav 2019; 210:112643. [PMID: 31398441 DOI: 10.1016/j.physbeh.2019.112643] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 07/15/2019] [Accepted: 08/05/2019] [Indexed: 11/30/2022]
Abstract
Caffeine is often consumed to mitigate degraded alertness associated with sleep deprivation. Both caffeine and sleep deprivation have been implicated in cardiovascular disease, but evidence is largely anecdotal. We determined the effects of sleep deprivation and caffeine on markers of cardiac autonomic activity. Twelve healthy young adults completed an 18-day laboratory study. They were exposed to three 48 h sessions of acute total sleep deprivation (TSD), each separated by three recovery days. In randomized, counter-balanced order, subjects received 0 mg (placebo), 200 mg, or 300 mg of caffeine at 12 h intervals during each sleep deprivation session. Every 2 h during scheduled wakefulness, a 15-minute neurobehavioral task battery was administered, during which heart rate (HR) and the high frequency (HF) component of the HR variability power spectrum (HF-HRV) were measured. Caffeine administration decreased HR and increased HF-HRV, indicating elevated parasympathetic activity. The 300 mg caffeine dose did not significantly affect autonomic activity to a greater extent than the 200 mg dose. There was no significant effect of 48 h of TSD on HR, whereas there was a small increase across hours awake in HF-HRV. There was no significant interaction of TSD with caffeine. Circadian rhythmicity in HR and HF-HRV surpassed the magnitude of the effects of caffeine and TSD. Caffeine and acute TSD thus produced only modest changes in cardiac autonomic activity, unlikely to have immediate clinical implications in healthy young adults. However, further research is needed to determine the long-term effects of chronic exposure to sleep loss and/or caffeine on cardiac health, and to determine the generalizability of our findings to non-healthy populations.
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Affiliation(s)
- Elena Crooks
- Sleep and Performance Research Center, Washington State University, PO Box 1495, Spokane, WA 99210-1495, USA; Department of Physical Therapy, Eastern Washington University, 310 N. Riverpoint Blvd., Spokane, WA 99202-0002, USA.
| | - Devon A Hansen
- Sleep and Performance Research Center, Washington State University, PO Box 1495, Spokane, WA 99210-1495, USA; Elson S. Floyd College of Medicine, Washington State University, PO Box 1495, Spokane, WA 99210-1495, USA.
| | - Brieann C Satterfield
- Social, Cognitive, and Affective Neuroscience Lab, University of Arizona College of Medicine, PO Box 245002, Tucson, AZ 85724-5002, USA.
| | - Matthew E Layton
- Sleep and Performance Research Center, Washington State University, PO Box 1495, Spokane, WA 99210-1495, USA; Elson S. Floyd College of Medicine, Washington State University, PO Box 1495, Spokane, WA 99210-1495, USA.
| | - Hans P A Van Dongen
- Sleep and Performance Research Center, Washington State University, PO Box 1495, Spokane, WA 99210-1495, USA; Elson S. Floyd College of Medicine, Washington State University, PO Box 1495, Spokane, WA 99210-1495, USA.
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Findley AS, Richards AL, Petrini C, Alazizi A, Doman E, Shanku AG, Davis GO, Hauff N, Sorokin Y, Wen X, Pique-Regi R, Luca F. Interpreting Coronary Artery Disease Risk Through Gene-Environment Interactions in Gene Regulation. Genetics 2019; 213:651-663. [PMID: 31492806 PMCID: PMC6781890 DOI: 10.1534/genetics.119.302419] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 07/08/2019] [Indexed: 12/11/2022] Open
Abstract
GWAS and eQTL studies identified thousands of genetic variants associated with complex traits and gene expression. Despite the important role of environmental exposures in complex traits, only a limited number of environmental factors were measured in these studies. Measuring molecular phenotypes in tightly controlled cellular environments provides a more tractable setting to study gene-environment interactions in the absence of other confounding variables. We performed RNA-seq and ATAC-seq in endothelial cells exposed to retinoic acid, dexamethasone, caffeine, and selenium to model genetic and environmental effects on gene regulation in the vascular endothelium-a common site of pathology in cardiovascular disease. We found that genes near regions of differentially accessible chromatin were more likely to be differentially expressed [OR = (3.41, 6.52), [Formula: see text]]. Furthermore, we confirmed that environment-specific changes in transcription factor binding are a key mechanism for cellular response to environmental stimuli. Single nucleotide polymorphisms (SNPs) in these transcription response factor footprints for dexamethasone, caffeine, and retinoic acid were enriched in GTEx eQTLs from artery tissues, indicating that these environmental conditions are latently present in GTEx samples. Additionally, SNPs in footprints for response factors in caffeine are enriched in colocalized eQTLs for coronary artery disease (CAD), suggesting a role for caffeine in CAD risk. By combining GWAS, eQTLs, and response genes, we annotated environmental components that can increase or decrease disease risk through changes in gene expression in 43 genes. Interestingly, each treatment may amplify or buffer genetic risk for CAD, depending on the particular SNP or gene considered.
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Affiliation(s)
- Anthony S Findley
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Allison L Richards
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Cristiano Petrini
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Adnan Alazizi
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Elizabeth Doman
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Alexander G Shanku
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Gordon O Davis
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Nancy Hauff
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan 48201
| | - Yoram Sorokin
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan 48201
| | - Xiaoquan Wen
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48109
| | - Roger Pique-Regi
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan 48201
| | - Francesca Luca
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, Michigan 48201
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Li S, Chen ML, Drucker AM, Cho E, Geng H, Qureshi AA, Li WQ. Association of Caffeine Intake and Caffeinated Coffee Consumption With Risk of Incident Rosacea in Women. JAMA Dermatol 2019; 154:1394-1400. [PMID: 30347034 DOI: 10.1001/jamadermatol.2018.3301] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Importance Caffeine is known to decrease vasodilation and have immunosuppressant effects, which may potentially decrease the risk of rosacea. However, the heat from coffee may be a trigger for rosacea flares. The relationship between the risk of rosacea and caffeine intake, including coffee consumption, is poorly understood. Objective To determine the association between the risk of incident rosacea and caffeine intake, including coffee consumption. Design, Setting, and Participants This cohort study included 82 737 women in the Nurses' Health Study II (NHS II), a prospective cohort established in 1989, with follow-up conducted biennially between 1991 and 2005. All analysis took place between June 2017 and June 2018. Exposures Data on coffee, tea, soda, and chocolate consumption were collected every 4 years during follow-up. Main Outcomes and Measures Information on history of clinician-diagnosed rosacea and year of diagnosis was collected in 2005. Results A total of 82 737 women responded to the question regarding a diagnosis of rosacea in 2005 in NHS II and were included in the final analysis (mean [SD] age at study entry, 50.5 [4.6] years). During 1 120 051 person-years of follow-up, we identified 4945 incident cases of rosacea. After adjustment for other risk factors, we found an inverse association between increased caffeine intake and risk of rosacea (hazard ratio for the highest quintile of caffeine intake vs the lowest, 0.76; 95% CI, 0.69-0.84; P < .001 for trend). A significant inverse association with risk of rosacea was also observed for caffeinated coffee consumption (HR, 0.77 for those who consumed ≥4 servings/d vs those who consumed <1/mo; 95% CI, 0.69-0.87; P < .001 for trend), but not for decaffeinated coffee (HR, 0.80; 95% CI, 0.56-1.14; P = .39 for trend). Further analyses found that increased caffeine intake from foods other than coffee (tea, soda, and chocolate) was not significantly associated with decreased risk of rosacea. Conclusions and Relevance Increased caffeine intake from coffee was inversely associated with the risk of incident rosacea. Our findings do not support limiting caffeine intake as a means to prevent rosacea. Further studies are required to explain the mechanisms of action of these associations, to replicate our findings in other populations, and to explore the relationship of caffeine with different rosacea subtypes.
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Affiliation(s)
- Suyun Li
- Department of Epidemiology and Health Statistics, School of Public Health, Qingdao University, Qingdao, Shandong, China.,Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Michael L Chen
- Harvard University, Cambridge, Massachusetts.,Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Aaron M Drucker
- Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island.,Division of Dermatology, Department of Medicine and Women's College Research Institute, Women's College Hospital, Toronto, Canada
| | - Eunyoung Cho
- Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island.,Department of Epidemiology, School of Public Health, Brown University, Providence, Rhode Island.,Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Hao Geng
- Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island.,Department of Epidemiology, School of Public Health, Brown University, Providence, Rhode Island.,School of Public Health, Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Abrar A Qureshi
- Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island.,Department of Epidemiology, School of Public Health, Brown University, Providence, Rhode Island.,Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Wen-Qing Li
- Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island.,Department of Epidemiology, School of Public Health, Brown University, Providence, Rhode Island
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Mostofsky E, Mittleman MA, Buettner C, Li W, Bertisch SM. Prospective Cohort Study of Caffeinated Beverage Intake as a Potential Trigger of Headaches among Migraineurs. Am J Med 2019; 132:984-991. [PMID: 31402050 PMCID: PMC6744320 DOI: 10.1016/j.amjmed.2019.02.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/18/2019] [Accepted: 02/19/2019] [Indexed: 12/15/2022]
Abstract
PURPOSE We aimed to evaluate the role of caffeinated beverage intake as a potential trigger of migraine headaches on that day or on the following day. METHODS In this prospective cohort study, 101 adults with episodic migraine completed electronic diaries every morning and evening. Ninety-eight participants completed at least 6 weeks of diaries in March 2016-October 2017. Every day, participants reported caffeinated beverage intake, other lifestyle factors, and the timing and characteristics of each migraine headache. We compared a participant's incidence of migraines on days with caffeinated beverage intake to the incidence of migraines among the same individual on days with no intake, accounting for day of week. We used conditional logistic regression to estimate odds ratios (OR) and 95% confidence intervals. RESULTS Among 98 participants (86 women, 12 men) with mean age 35.1 years, 83% white, and 10% Hispanic or Latino, the average age when headaches started was 16.3 years. In total, the participants reported 825 migraines during 4467 days of observation. There was a statistically significant nonlinear association between the number of caffeinated beverages and the odds of migraine headache occurrence on that day (P-quadratic trend = .024), though estimates for each level of intake were not statistically significant. The associations varied according to habitual intake and oral contraceptive use. CONCLUSIONS There was a nonlinear association between caffeinated beverage intake and the odds of migraine headache occurrence on that day. This suggests that high levels of caffeinated beverage intake may be a trigger of migraine headaches on that day.
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Affiliation(s)
- Elizabeth Mostofsky
- Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Boston, Mass; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Mass.
| | - Murray A Mittleman
- Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Boston, Mass; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Mass; Harvard Medical School, Boston, Mass
| | - Catherine Buettner
- Harvard Medical School, Boston, Mass; Department of Medicine, Mount Auburn Hospital, Cambridge, Mass
| | - Wenyuan Li
- Cardiovascular Epidemiology Research Unit, Beth Israel Deaconess Medical Center, Boston, Mass; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Mass
| | - Suzanne M Bertisch
- Harvard Medical School, Boston, Mass; Department of Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, Mass; Sleep Medicine Epidemiology Program, Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, Mass
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