101
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Horikawa Y, Yatsuga S, Okamatsu Y. Caffeine Intoxication Due to Antipyretic Analgesic Overdose in an Adolescent. Cureus 2021; 13:e17922. [PMID: 34660114 PMCID: PMC8512573 DOI: 10.7759/cureus.17922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2021] [Indexed: 11/15/2022] Open
Abstract
Recently, high concentrations of caffeine present in energy drinks and over-the-counter (OTC) drugs have become a concern worldwide. Several deaths due to caffeine intoxication have been reported, necessitating caution. Typically, supportive care is used to treat caffeine intoxication. However, in severe cases of caffeine intoxication, hemodialysis may be used. For adults, a lethal blood caffeine concentration is at least 80 µg/mL, whereas lethal blood caffeine concentration is unknown for children. In the present case, a 15-year-old girl took a large dose of an OTC antipyretic analgesic to commit suicide, resulting in caffeine intoxication. In this case, even though blood caffeine concentration was higher than the adult lethal dose, the patient recovered through a simple treatment with intravenous infusion of extracellular fluid.
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Affiliation(s)
- Yohei Horikawa
- Department of Pediatrics, Aso Iizuka Hospital, Iizuka City, JPN
| | - Shuichi Yatsuga
- Department of Pediatrics, Aso Iizuka Hospital, Iizuka City, JPN
| | - Yuki Okamatsu
- Department of Pediatrics, Aso Iizuka Hospital, Iizuka City, JPN
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102
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Amiot MJ, Latgé C, Plumey L, Raynal S. Intake Estimation of Phytochemicals in a French Well-Balanced Diet. Nutrients 2021; 13:nu13103628. [PMID: 34684628 PMCID: PMC8539512 DOI: 10.3390/nu13103628] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 12/26/2022] Open
Abstract
Phytochemicals contribute to the health benefits of plant-rich diets, notably through their antioxidant and anti-inflammatory effects. However, recommended daily amounts of the main dietary phytochemicals remain undetermined. We aimed to estimate the amounts of phytochemicals in a well-balanced diet. A modelled diet was created, containing dietary reference intakes for adults in France. Two one-week menus (summer and winter) were devised to reflect typical intakes of plant-based foods. Existing databases were used to estimate daily phytochemical content for seven phytochemical families: phenolic acids, flavonoids (except anthocyanins), anthocyanins, tannins, organosulfur compounds, carotenoids, and caffeine. The summer and winter menus provided 1607 and 1441 mg/day, respectively, of total polyphenols (phenolic acids, flavonoids, anthocyanins, and tannins), the difference being driven by reduced anthocyanin intake in winter. Phenolic acids, flavonoids (including anthocyanins), and tannins accounted for approximately 50%, 25%, and 25% of total polyphenols, respectively. Dietary carotenoid and organosulfur compound content was estimated to be approximately 17 and 70 mg/day, respectively, in both seasons. Finally, both menus provided approximately 110 mg/day of caffeine, exclusively from tea and coffee. Our work supports ongoing efforts to define phytochemical insufficiency states that may occur in individuals with unbalanced diets and related disease risk factors.
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Affiliation(s)
- Marie-Josèphe Amiot
- INRAE, MoISA, University of Montpellier, CIHEAM-IAMM, CIRAD, Institut Agro-Montpellier SupAgro, IRD, Campus La Gaillarde, 2 Place Pierre Viala, 34000 Montpellier, France
- Correspondence: ; Tel.: +33-(0)4-99-61-22-16
| | - Christian Latgé
- Pierre Fabre Laboratories, Langlade-3 Avenue Hubert Curien-BP 13 562, CEDEX 1, 31035 Toulouse, France;
| | - Laurence Plumey
- NUTRITION CO&CO, 11 Avenue des Vignes, 92210 St Cloud, France;
| | - Sylvie Raynal
- Naturactive, Pierre Fabre Laboratories, 29 Avenue du Sidobre, 81106 Castres, France;
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103
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Ledesma ALL, Leite Rodrigues D, Monteiro de Castro Silva I, Oliveira CA, Bahmad F. The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial. PLoS One 2021; 16:e0256275. [PMID: 34543285 PMCID: PMC8452027 DOI: 10.1371/journal.pone.0256275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 07/19/2021] [Indexed: 11/18/2022] Open
Abstract
Objective To test the hypothesis that caffeine can influence tinnitus, we recruited 80 patients with chronic tinnitus and randomly allocated them into two groups (caffeine and placebo) to analyze the self-perception of tinnitus symptoms after caffeine consumption, assuming that this is an adequate sample for generalization. Methods The participants were randomized into two groups: one group was administered a 300-mg capsule of caffeine, and the other group was given a placebo capsule (cornstarch). A diet that restricted caffeine consumption for 24 hours was implemented. The participants answered questionnaires (the Tinnitus Handicap Inventory—THI, the Visual Analog Scale—VAS, the profile of mood state—POMS) and underwent examinations (tonal and high frequency audiometry, acufenometry (frequency measure; intensity measure and the minimum level of tinnitus masking), transient otoacoustic emissions—TEOAE and distortion product otoacoustic emissions—DPOAE assessments) at two timepoints: at baseline and after capsule ingestion. Results There was a significant change in mood (measured by the POMS) after caffeine consumption. The THI and VAS scores were improved at the second timepoint in both groups. The audiometry assessment showed a significant difference in some frequencies between baseline and follow-up measurements in both groups, but these differences were not clinically relevant. Similar findings were observed for the amplitude and signal-to-noise ratio in the TEOAE and DPOAE measurements. Conclusions Caffeine (300 mg) did not significantly alter the psychoacoustic measures, electroacoustic measures or the tinnitus-related degree of discomfort.
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Affiliation(s)
- Alleluia Lima Losno Ledesma
- Postgraduate Program in Health Sciences at the Faculty of Health Sciences, University of Brasília, Brasília, DF, Brazil
| | | | | | - Carlos Augusto Oliveira
- Postgraduate Program in Health Sciences at the Faculty of Health Sciences, University of Brasília, Brasília, DF, Brazil
| | - Fayez Bahmad
- Postgraduate Program in Health Sciences at the Faculty of Health Sciences, University of Brasília, Brasília, DF, Brazil
- Institute of Otorhinolaryngology, Brasília, DF, Brazil
- * E-mail:
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104
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Rodak K, Kokot I, Kratz EM. Caffeine as a Factor Influencing the Functioning of the Human Body-Friend or Foe? Nutrients 2021; 13:3088. [PMID: 34578966 PMCID: PMC8467199 DOI: 10.3390/nu13093088] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 02/08/2023] Open
Abstract
Nowadays, caffeine is one of the most commonly consumed substances, which presents in many plants and products. It has both positive and negative effects on the human body, and its activity concerns a variety of systems including the central nervous system, immune system, digestive system, respiratory system, urinary tract, etc. These effects are dependent on quantity, the type of product in which caffeine is contained, and also on the individual differences among people (sex, age, diet etc.). The main aim of this review was to collect, present, and analyze the available information including the latest discoveries on the impact of caffeine on human health and the functioning of human body systems, taking into account the role of caffeine in individual disease entities. We present both the positive and negative sides of caffeine consumption and the healing properties of this purine alkaloid in diseases such as asthma, Parkinson's disease, and others, not forgetting about the negative effects of excess caffeine (e.g., in people with hypertension, children, adolescents, and the elderly). In summary, we can conclude, however, that caffeine has a multi-directional influence on various organs of the human body, and because of its anti-oxidative properties, it was, and still is, an interesting topic for research studies including those aimed at developing new therapeutic strategies.
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Affiliation(s)
- Kamil Rodak
- Student Research Club, “Biomarkers in Medical Diagnostics”, Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland
| | - Izabela Kokot
- Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland;
| | - Ewa Maria Kratz
- Department of Laboratory Diagnostics, Division of Laboratory Diagnostics, Faculty of Pharmacy, Wroclaw Medical University, Borowska Street 211A, 50-556 Wroclaw, Poland;
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105
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Gache LSDS, Vaz J, Almeida-de-Souza J. Systematic Review of the Effects of Coffee or Its Components on Platelets and Their Regulators. J Caffeine Adenosine Res 2021. [DOI: 10.1089/caff.2021.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - Josiana Vaz
- Escola Superior de Saúde com sede no Instituto Politécnico de Bragança, Bragança, Portugal
- Centro de Investigação Montanha (CIMO) com sede no Instituto Politécnico de Bragança, Bragança, Portugal
| | - Juliana Almeida-de-Souza
- Escola Superior de Saúde com sede no Instituto Politécnico de Bragança, Bragança, Portugal
- Centro de Investigação Montanha (CIMO) com sede no Instituto Politécnico de Bragança, Bragança, Portugal
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106
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Skarmoutsos I, Petsalakis ID, Samios J. The Polar Cosolvent Effect on Caffeine Solvation in Supercritical CO 2–Ethanol Mixtures: A Molecular Modeling Approach. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ioannis Skarmoutsos
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, Vas. Constantinou 48, GR-116 35 Athens, Greece
| | - Ioannis D. Petsalakis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, Vas. Constantinou 48, GR-116 35 Athens, Greece
| | - Jannis Samios
- Department of Chemistry, Laboratory of Physical Chemistry, National & Kapodistrian University of Athens, Panepistimiopolis, 157-71 Athens, Greece
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107
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108
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Kamely M, Karimi Torshizi MA, West J, Niewold T. Impacts of caffeine on resistant chicken's performance and cardiovascular gene expression. J Anim Physiol Anim Nutr (Berl) 2021; 106:566-574. [PMID: 34291833 DOI: 10.1111/jpn.13608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 06/16/2021] [Accepted: 07/06/2021] [Indexed: 11/27/2022]
Abstract
We previously reported a study on 288 broiler (Gallus gallus) chicks who received caffeine in water between days 3 and 42, at levels of 0, 6.25, 12.5, 25, 50 and 100 mg/kg body weight (BW)/day. In the previous report, we found that caffeine caused pulmonary hypertension (PH)-associated mortality in a significant minority (20%-30%) of birds, including right ventricular hypertrophy and ascites. We have also shown a significant upregulation of the serotonin transporter (SERT), troponin T2, adenosine A1 receptor (ADORA1) and phosphodiesterase 5A (PDE5) in chicken suffering from PH. Here, we examine the resistant (survived) chicks from the first study that had not died due to acute heart failure and did not have clinical signs of pulmonary hypertension. Our goal was to determine whether birds who lacked overt signs of disease had subclinical manifestations, including similar changes in gene expression, growth rates and altered systemic haemodynamics. We found that growth was significantly increased by caffeine consumption (p < 0.01) at low doses; however, dosage over 50 mg/BW/d had remarkable adverse effects on growth (p < 0.01). Blood pressure, troponin T2 and PDE5 gene expression were not significantly altered by caffeine administration (p > 0.05). However, SERT gene expression linearly increased with increasing caffeine dosage (p < 0.01). The impact of caffeine on ADORA1 gene expression was dose dependent and nonlinear. In conclusion, despite the significant effects of caffeine on birds' growth, no significant negative effects of caffeine were observed on the cardiovascular function of resistant chickens. This work provides valuable information for further study on different dosage of caffeine in an animal model.
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Affiliation(s)
- Mohammad Kamely
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.,Division Animal and Human Health Engineering, Faculty of Bioscience Engineering, University of KU Leuven, Leuven, Belgium
| | | | - James West
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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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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110
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Brzezicha J, Błażejewicz D, Brzezińska J, Grembecka M. Green coffee VS dietary supplements: A comparative analysis of bioactive compounds and antioxidant activity. Food Chem Toxicol 2021; 155:112377. [PMID: 34197879 DOI: 10.1016/j.fct.2021.112377] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/07/2021] [Accepted: 06/26/2021] [Indexed: 11/30/2022]
Abstract
The aim of this work was to assess and compare both the antioxidant potential and content of the selected biologically active substances in green coffee samples and dietary supplements based on green coffee extracts. The newly developed method using HPLC coupled with Corona detector (HPLC-CAD) allowed the analysis of chlorogenic acid, caffeine, caffeic acid, coumaric acid, and ferulic acid in a single run. The method was validated and characterized by a wide concentration range (5-75 μg/mL), sensitivity, accuracy (92.7-112%), repeatability (RSD <5.32%), and precision (1.80-4.04%). The assessment of antioxidant potential was done by the spectrophotometric Folin-Ciocalteu method. Green coffee samples and extract characterized by comparable or, in the case of some samples, even higher antioxidant properties than dietary supplements. There was found a great variety of CGA levels in dietary supplements (0.33-329 mg/g) compared to the green coffee samples (32.7 mg/g - 47.6 mg/g). The highest caffeine content (156 mg/tablet) was determined in one dietary supplement, while green coffee samples contained its lower levels (20.9 mg/g). The quality of some supplements is not satisfactory as their composition does not comply with the manufacturer's declaration. There were found discrepancies between the value determined and declared by the producer (<243%).
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Affiliation(s)
- Justyna Brzezicha
- Department of Bromatology, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland.
| | - Daria Błażejewicz
- Department of Bromatology, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland.
| | - Joanna Brzezińska
- Department of Bromatology, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland.
| | - Małgorzata Grembecka
- Department of Bromatology, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416, Gdansk, Poland.
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Błaszczyk-Bębenek E, Jagielski P, Schlegel-Zawadzka M. Caffeine Consumption in a Group of Adolescents from South East Poland-A Cross Sectional Study. Nutrients 2021; 13:nu13062084. [PMID: 34207087 PMCID: PMC8234391 DOI: 10.3390/nu13062084] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/10/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022] Open
Abstract
Caffeine is the most common psychoactive substance available to adults, as well as to children and adolescents. The safety of its use in younger age groups requires further research. The aim of this study was to evaluate caffeine intake, to identify products and drinks that are the main sources of caffeine intake in the diet of the subjects and the risk of excessive caffeine intake with the diet of adolescents, stratified by gender. A cross-sectional study was conducted among 508 adolescents aged 16–18 years from southern Poland. Black tea, cola-based soft drinks and milk chocolate were the most frequently consumed products containing caffeine in the diet of the examined persons. The average caffeine intake was 95.54 mg/day (1.54 mg/kg b.w.). In 12.2% of the subjects the dose of 3 mg/kg b.w./day was exceeded, and in over 41.3% the dose causing sleep disorders was exceeded. The dose causing anxiety was also exceeded in 18.1% of the respondents, significantly more often in girls than boys (p = 0.0487).
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Affiliation(s)
- Ewa Błaszczyk-Bębenek
- Department of Nutrition and Drug Research, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University Medical College, 31-066 Krakow, Poland;
- Correspondence: ; Tel.: +48-12-433-28-20
| | - Paweł Jagielski
- Department of Nutrition and Drug Research, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University Medical College, 31-066 Krakow, Poland;
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112
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Chowaniak M, Niemiec M, Zhu Z, Rashidov N, Gródek-Szostak Z, Szeląg-Sikora A, Sikora J, Kuboń M, Fayzullo SA, Mahmadyorzoda UM, Józefowska A, Lepiarczyk A, Gambuś F. Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China. Molecules 2021; 26:3620. [PMID: 34199199 PMCID: PMC8231865 DOI: 10.3390/molecules26123620] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 11/16/2022] Open
Abstract
Natural products have always enjoyed great popularity among consumers. Wild tea is an interesting alternative to tea from intensive plantations. The term "wild tea" is applied to many different varieties of tea, the most desirable and valued of which are native or indigenous tea plants. Special pro-health properties of wild tea are attributed to the natural conditions in which it grows. However, there are no complex studies that describe quality and health indicators of wild tea. The aim of this research was to evaluate the quality of wild and cultivated green tea from different regions of China: Wuzhishan, Baisha, Kunlushan, and Pu'Er. The assessment was carried out by verifying the concentration of selected chemical components in tea and relating it to the health risks they may pose, as well as to the nutritional requirements of adults. Wild tea was characterized by higher micronutrient concentration. The analyzed teas can constitute a valuable source of Mn in the diet. A higher concentration of nitrates and oxalates in cultivated tea can be associated with fertilizer use. The analyzed cultivated tea was a better source of antioxidants with a higher concentration of caffeine. There were no indications of health risks for wild or cultivated teas.
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Affiliation(s)
- Maciej Chowaniak
- Department of Agroecology and Crop Production, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland;
| | - Marcin Niemiec
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland; (M.N.); (F.G.)
| | - Zhiqiang Zhu
- Department of Agricultural Resources and Environment, College of Tropical Crops, Hainan University, Renmin Avenue, Haikou, Hainan Province 570228, China;
| | - Naim Rashidov
- Department of Food Products and Agrotechnology, Polytechnical Institute of Tajik Technical University by Academician M.S. Osimi in Khujand, Lenin St. 226, Khujand 735700, Tajikistan;
| | - Zofia Gródek-Szostak
- Department of Economics and Enterprise Organization, Cracow University of Economics, 31-510 Krakow, Poland;
| | - Anna Szeląg-Sikora
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, 30-149 Kraków, Poland; (A.S.-S.); (J.S.); (M.K.)
| | - Jakub Sikora
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, 30-149 Kraków, Poland; (A.S.-S.); (J.S.); (M.K.)
| | - Maciej Kuboń
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, 30-149 Kraków, Poland; (A.S.-S.); (J.S.); (M.K.)
- Eastern European State College of Higher Education in Przemyśl, Książąt Lubomirskich 6, 37-700 Przemyśl, Poland
| | | | - Usmon Mamur Mahmadyorzoda
- Tajik Agrarian University Named After Shirinsho Shotemur, Rudaki Avenue 146, Dushanbe 734003, Tajikistan;
| | - Agnieszka Józefowska
- Department of Soil Science and Agrophysics, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland;
| | - Andrzej Lepiarczyk
- Department of Agroecology and Crop Production, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland;
| | - Florian Gambuś
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland; (M.N.); (F.G.)
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Caffeine Sources and Consumption among Saudi Adults Living with Diabetes and Its Potential Effect on HbA1c. Nutrients 2021; 13:nu13061960. [PMID: 34200398 PMCID: PMC8226783 DOI: 10.3390/nu13061960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 12/25/2022] Open
Abstract
Information regarding the spread and effect of coffee and caffeine intake by individuals with type II diabetes remains unclear. This study aims to identify the amount and sources of habitual caffeine intake by individuals with type II diabetes and to investigate its association with other health outcomes, especially HbA1c. This is a cross-sectional survey involving 100 people medically defined as having type II diabetes comprising both genders, recruited from a care centre. All participants completed a caffeine semi-quantitative food frequency questionnaire (C-FFQ) to estimate their caffeine consumption, a two day 24-h recall, and a detailed questionnaire. The average caffeine intake was calculated from all sources and the differences in mean by gender were tested using a regression model (adjusted to important confounders). Regression models were used to verify the association between average caffeine intake on HbA1c and other health outcomes with adjustment for important confounders. A p value < 0.05 represented statistical significance. Arabic coffee (gahwa) and tea were the most common sources of caffeine among Saudi adults living with diabetes. Average caffeine intake for the whole sample was 194 ± 165 mg/day, which is 2.3 ± 2 mg/kg. There was an inverse association between caffeine intake and age: difference in mean −3.26 mg/year (95%CI: −5.34, −1.18; p = 0.003). Males had significantly higher consumption of caffeine compared to females: difference in mean 90.7 mg/day (95%CI: 13.8, 167.6; p = 0.021). No association was found between average caffeine intake and HbA1C or any other cardiovascular risk factors. This information can help public health practitioners and policy makers when assessing the risk of caffeine consumption among this vulnerable group.
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Dal-Fabbro R, Cosme-Silva L, Capalbo LC, Chaves-Neto AH, Ervolino E, Cintra LTA, Gomes-Filho JE. Excessive caffeine intake increases bone resorption associated with periapical periodontitis in rats. Int Endod J 2021; 54:1861-1870. [PMID: 34037986 DOI: 10.1111/iej.13578] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 12/31/2022]
Abstract
AIM To evaluate the effect of excessive caffeine intake on the inflammation/resorption processes associated with periapical periodontitis (PP) in rats. METHODOLOGY Sixteen Wistar rats were used. Periapical periodontitis was induced in the four first molars in each animal. The animals were arranged into two groups: control (C)-rats with periapical periodontitis; and caffeine (CAF)-rats with periapical periodontitis under caffeine administration protocol. The CAF animals received 10 mg/100 g of body weight/day of caffeine via gavage starting fifteen days before PP induction and continuing for thirty more days until euthanasia. On the 30th day, the animals were euthanized and the jaws removed for microcomputed tomography, histological and immunohistochemical analysis for RANKL, OPG, TRAP, IL-10, TNF-⍺ and IL-1β. The Mann-Whitney test was performed for nonparametric data, and Student's t test was performed for parametric data, using p < .05. RESULTS There was no significant difference in the weight change between the groups. The median score of the inflammatory process was significantly greater in the CAF group (3) compared with the C group (2), p = .0256. Bone resorption was greater in the group consuming caffeine (1.08 ± 0.15 mm3 ) compared with the C group (0.88 ± 0.10 mm3 ), p = .0346. The immunolabelling for RANKL, TRAP and IL-1β was significantly higher in the CAF group when compared to the control, p < .05. No differences were found for the OPG, IL-10 and TNF-⍺ immunolabelling. CONCLUSION Excessive caffeine exposure via gavage in rats was able to exacerbate the volume of periapical bone destruction, and the inflammatory pattern deriving from periapical periodontitis altering the expression of RANKL, IL-1β and TRAP.
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Affiliation(s)
- Renan Dal-Fabbro
- Department of Preventive and Restorative Dentistry, Araçatuba, Brazil
| | - Leopoldo Cosme-Silva
- Department of Restorative Dentistry and Endodontics, School of Dentistry, Federal University of Alagoas (UFAL), Alagoas, Brazil
| | | | | | - Edilson Ervolino
- Department of Basic Science, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
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Romero-Martínez BS, Montaño LM, Solís-Chagoyán H, Sommer B, Ramírez-Salinas GL, Pérez-Figueroa GE, Flores-Soto E. Possible Beneficial Actions of Caffeine in SARS-CoV-2. Int J Mol Sci 2021; 22:5460. [PMID: 34067243 PMCID: PMC8196824 DOI: 10.3390/ijms22115460] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/03/2021] [Accepted: 05/13/2021] [Indexed: 12/23/2022] Open
Abstract
The COVID-19 pandemic has established an unparalleled necessity to rapidly find effective treatments for the illness; unfortunately, no specific treatment has been found yet. As this is a new emerging chaotic situation, already existing drugs have been suggested to ameliorate the infection of SARS-CoV-2. The consumption of caffeine has been suggested primarily because it improves exercise performance, reduces fatigue, and increases wakefulness and awareness. Caffeine has been proven to be an effective anti-inflammatory and immunomodulator. In airway smooth muscle, it has bronchodilator effects mainly due to its activity as a phosphodiesterase inhibitor and adenosine receptor antagonist. In addition, a recent published document has suggested the potential antiviral activity of this drug using in silico molecular dynamics and molecular docking; in this regard, caffeine might block the viral entrance into host cells by inhibiting the formation of a receptor-binding domain and the angiotensin-converting enzyme complex and, additionally, might reduce viral replication by the inhibition of the activity of 3-chymotrypsin-like proteases. Here, we discuss how caffeine through certain mechanisms of action could be beneficial in SARS-CoV-2. Nevertheless, further studies are required for validation through in vitro and in vivo models.
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Affiliation(s)
- Bianca S. Romero-Martínez
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, CDMX CP 04510, Mexico; (B.S.R.-M.); (L.M.M.)
| | - Luis M. Montaño
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, CDMX CP 04510, Mexico; (B.S.R.-M.); (L.M.M.)
| | - Héctor Solís-Chagoyán
- Laboratorio de Neurofarmacología, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, CDMX CP 14370, Mexico;
| | - Bettina Sommer
- Laboratorio de Hiperreactividad Bronquial, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, CDMX CP 14080, Mexico;
| | - Gemma Lizbeth Ramírez-Salinas
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotécnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation), Escuela Superior de Medicina, Instituto Politécnico Nacional, CDMX CP 11340, Mexico;
| | - Gloria E. Pérez-Figueroa
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, CDMX CP 06720, Mexico;
| | - Edgar Flores-Soto
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, CDMX CP 04510, Mexico; (B.S.R.-M.); (L.M.M.)
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116
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La Vieille S, Gillespie Z, Bonvalot Y, Benkhedda K, Grinberg N, Rotstein J, Barber J, Krahn AD. Caffeinated energy drinks in the Canadian context: health risk assessment with a focus on cardiovascular effects. Appl Physiol Nutr Metab 2021; 46:1019-1028. [PMID: 34000209 DOI: 10.1139/apnm-2021-0245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In Canada, caffeinated energy drinks (CEDs) currently sold under Temporary Marketing Authorizations must meet strict eligibility criteria. These criteria, which include compositional and labelling requirements, were developed based on the outcome of a health risk assessment conducted by Health Canada (HC) in 2013. HC updated its assessment by reviewing new information with the focus on potential cardiovascular effects associated with the consumption of CEDs available for sale in Canada. Due to limited data on CED consumption among Canadians to derive accurate exposure information, the composition of a typical CED was characterized to assess the potential effects of single ingredients and synergistic interactions between ingredients on the cardiovascular system. Surveillance data on potential adverse effects related to CED consumption was also analyzed. After extensive review, HC's updated assessment confirms the current risk management approach for CEDs is health protective for Canadian consumers, including the potential for cardiovascular effects. The available evidence supports that moderate consumption (up to 500 mL per day) of a typical CED authorized for sale in Canada is safe for the general population of healthy adults and adolescents. It also re-confirms that vulnerable sub-populations (i.e., children, pregnant and/or breastfeeding women, and caffeine-sensitive individuals) should not consume CEDs. Novelty: Consumption up to 500 mL per day of a typical CED is not associated with an increased risk of cardiovascular effects. Children, pregnant and/or breastfeeding women, and caffeine-sensitive individuals should not consume CEDs.
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Affiliation(s)
| | - Zoe Gillespie
- Bureau of Chemical Safety, Food Directorate, Health Canada, Ottawa, ON, Canada
| | - Yvette Bonvalot
- Biostatistics and Modelling Division, Bureau of Food Surveillance and Science Integration, Food Directorate, Health Canada, Ottawa, ON, Canada
| | - Karima Benkhedda
- Bureau of Nutritional Sciences, Food Directorate, Health Canada, Ottawa, ON, Canada
| | - Nancy Grinberg
- Bureau of Nutritional Sciences, Food Directorate, Health Canada, Ottawa, ON, Canada
| | - Joel Rotstein
- Bureau of Chemical Safety, Food Directorate, Health Canada, Ottawa, ON, Canada
| | - Jennifer Barber
- Bureau of Nutritional Sciences, Food Directorate, Health Canada, Ottawa, ON, Canada
| | - Andrew D Krahn
- Center for Cardiovascular Innovation, Division of Cardiology, The University of British Columbia, Vancouver, BC, Canada
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117
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Alehaideb Z, Sheriffdeen M, Law FCP. Inhibition of Caffeine Metabolism by Apiaceous and Rutaceae Families of Plant Products in Humans: In Vivo and In Vitro Studies. Front Pharmacol 2021; 12:641090. [PMID: 33995046 PMCID: PMC8116649 DOI: 10.3389/fphar.2021.641090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 03/02/2021] [Indexed: 12/04/2022] Open
Abstract
Daily consumption of caffeinated beverages is considered safe but serious health consequences do happen in some individuals. The Apiaceous and Rutaceae families of plant (ARFP) products are popular foods and medicines in the world. We previously reported significant amounts of furanocoumarin bioactive such as 8-methoxypsoralen, 5-methoxypsoralen, and isopimpinellin in ARFP products. As both caffeine and furanocoumarin bioactive are metabolized by the same hepatic CYP1A1/2 isozyme in humans, caffeine/ARFP product interactions may occur after co-administration. The objectives of the present study were to study in vivo loss of caffeine metabolizing activity by comparing the pharmacokinetics of caffeine in volunteers before and after pre-treatment with an ARFP extract, study the correlation between the decrease in hepatic CYP1A2 activity and the content of furanocoumarin bioactive in ARFP extracts, characterize CYP1A2 inactivation using in vitro incubations containing 14C-caffeine, a furanocoumarin bioactive, and human liver microsomes (HLMs), and provide a mechanistic explanation for both in vivo and in vitro data using the irreversible inhibition mechanism. The study results showed pre-treatment of volunteers with four ARFP extracts increased the area-under-the-concentration-time-curve (AUC0-inf) ratio of caffeine in the plasma ranging from 1.3 to 4.3-fold compared to the untreated volunteers indicating significant caffeine metabolism inhibition. The increases in AUC0-inf ratio also were linearly related to the effect-based doses of the furanocoumarins in the ARFP extracts, a finding which indicated caffeine metabolism inhibition was related to the content of furanocoumarin bioactive in an ARFP product. In vitro incubation studies also showed individual furanocoumarin bioactive were potent inhibitors of caffeine-N-demethylation; the IC50 for 8-methoxypsoralen 5-methoxypsoralen, and isopimpinellin were 0.09, 0.13, and 0.29 µM, respectively. In addition, CYP1A2 inactivation by individual furanocoumarin bioactive was concentration- and time-dependent involving the irreversible inhibition mechanism. The proposed irreversible inhibition mechanism was investigated further using 14C-labeled 8-methoxypsoralen and HLMs. The formation of 14C-adducts due to 14C-8-MOP-derived radioactivity bound to HLMs confirmed the irreversible inhibition of CYP1A2 activity. Thus, furanocoumarin bioactive metabolism in humans would result in reactive metabolite(s) formation inactivating CYP1A2 isozyme and inhibiting caffeine metabolism. Once the CYP1A2 isozyme was deactivated, the enzymic activity could only be regained by isozyme re-synthesis which took a long time. As a result, a single oral dose of ARFP extract administered to the human volunteers 3.0 h before still was able to inhibit caffeine metabolism.
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Affiliation(s)
- Zeyad Alehaideb
- Department of Medical Research Core Facility and Platforms, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.,Ministry of National Guard - Health Affairs, Riyadh, Saudi Arabia
| | | | - Francis C P Law
- Department of Biological Sciences, Faculty of Science, Simon Fraser University, Burnaby, BC, Canada
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Caffeine Consumption Habits of New Zealand Tertiary Students. Nutrients 2021; 13:nu13051493. [PMID: 33924957 PMCID: PMC8145313 DOI: 10.3390/nu13051493] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/20/2021] [Accepted: 04/24/2021] [Indexed: 12/23/2022] Open
Abstract
Adverse effects associated with excessive caffeine consumption combined with increasing numbers and availability of caffeine-containing products are causes for concern. Tertiary students may be at increased risk of consuming excessive amounts of caffeine due to seeking caffeinated products with well-known wakefulness effects and cognitive benefits. This study explored caffeine consumption habits of New Zealand tertiary students (317; ≥16-years) using a previously validated caffeine consumption habits (CaffCo) questionnaire. Most (99.1%) regularly consumed caffeinated products, especially chocolate, coffee and tea, with coffee, tea and energy drinks contributing most to total caffeine intake. Median estimated caffeine intake was 146.73 mg·day−1, or 2.25 mg·kgbw−1·day−1. Maximum and minimum intakes were 1988.14 mg·day−1 (23.51 mg·kgbw−1·day−1) and 0.07 mg·day−1 (0.02 mg·kgbw−1·day−1), respectively. One-third (34.4%) of caffeine consumers ingested caffeine above the adverse effect level (3 mg·kgbw−1·day−1) and 14.3% above the safe limit (400 mg·day−1). Most caffeine consumers (84.7%), reported experiencing at least one ‘adverse symptom’ post-caffeine consumption, of which 25.7% reported effects leading to distress or negatively impacting their life. Experiencing ‘adverse symptoms’ did not, however, curtail consumption in the majority of symptomatic participants (~77%). Public health initiatives directed at tertiary students may be important to reduce potential caffeine-related harm.
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119
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Whelehan DF, Connelly TM, Burke JR, Doherty EM, Ridgway PF. Self-reported surgeon health behaviours: A multicentre, cross-sectional exploration into the modifiable factors that impact surgical performance with the association of surgeons in training. Ann Med Surg (Lond) 2021; 65:102299. [PMID: 34007440 PMCID: PMC8111267 DOI: 10.1016/j.amsu.2021.102299] [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: 03/02/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 11/15/2022] Open
Abstract
Introduction Surgeons regularly educate patients on health promoting behaviours including diet, sleep and exercise. No study thus far has explored surgeons’ personal compliance with these health behaviours and their relationship with surgical performance. The primary outcomes of this study were self-reported health, health related behaviours, wellbeing, fatigue and surgical performance. Methods A survey of validated themes on health related behaviours, workplace variables and performance was distributed to surgical trainees and consultants in the UK and Ireland through the Association for Surgeons in Training (ASiT). Non-parametric analysis was used to determine inferential associations. Results Ninety five surgeons (51.5% female, 39.9% registrars) completed the survey. 94% and 74% reported ‘good’ or better overall health and mental wellbeing respectively. The majority (54.7%) reported inconsistent sleep patterns. Less than a quarter engage in regular exercise. Sixty two and 64.2% reported being regularly fatigued and bothered by feelings of anxiety and/or depression respectively. Poor self-reported health and wellbeing were associated with poorer reported off-call performance (p < .01). Higher levels of fatigue negatively impacted self-reported surgical and non-surgical task proficiency (p < .01). Discussion and conclusion Surgeons reported high levels of overall health. However, healthy behaviours around sleep, diet and exercise were not consistently reported. Fewer reported good mental health and emotional well-being. Self-reported health behaviours including sleep and physical activity were associated with surgical performance. Strategies to improve modifiable lifestyle factors which will optimise physical health, mental wellbeing and levels of fatigue may optimise surgical performance. 94% and 74% respectively reported having at least ‘good’ health and well-being. A majority reported being regularly fatigued and inconsistent sleep patterns. Poorer health and wellbeing were associated with poorer performance off-call (p < .01). Higher levels of fatigue negatively impacted technical and non-technical performance. Improving modifiable factors to optimise health and wellbeing may improve performance.
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Affiliation(s)
- Dale F. Whelehan
- Department of Surgery, School of Medicine, Trinity College Dublin, The University of Dublin, Ireland
- Department of Surgery Tallaght University Hospital, Ireland
- Department of Gastrointestinal Surgery, Leeds Teaching Hospitals, NHS Trust, United Kingdom
- Department of Surgery, Royal College of Surgeons in Ireland, Ireland
- Corresponding author. Discipline of Surgery, School of Medicine , Tallaght University Hospital, Dublin, Ireland.
| | - Tara M. Connelly
- Department of Surgery, School of Medicine, Trinity College Dublin, The University of Dublin, Ireland
- Department of Surgery Tallaght University Hospital, Ireland
- Department of Gastrointestinal Surgery, Leeds Teaching Hospitals, NHS Trust, United Kingdom
- Department of Surgery, Royal College of Surgeons in Ireland, Ireland
| | - Joshua R. Burke
- Department of Surgery, School of Medicine, Trinity College Dublin, The University of Dublin, Ireland
- Department of Surgery Tallaght University Hospital, Ireland
- Department of Gastrointestinal Surgery, Leeds Teaching Hospitals, NHS Trust, United Kingdom
- Department of Surgery, Royal College of Surgeons in Ireland, Ireland
| | - Eva M. Doherty
- Department of Surgery, School of Medicine, Trinity College Dublin, The University of Dublin, Ireland
- Department of Surgery Tallaght University Hospital, Ireland
- Department of Gastrointestinal Surgery, Leeds Teaching Hospitals, NHS Trust, United Kingdom
- Department of Surgery, Royal College of Surgeons in Ireland, Ireland
| | - Paul F. Ridgway
- Department of Surgery, School of Medicine, Trinity College Dublin, The University of Dublin, Ireland
- Department of Surgery Tallaght University Hospital, Ireland
- Department of Gastrointestinal Surgery, Leeds Teaching Hospitals, NHS Trust, United Kingdom
- Department of Surgery, Royal College of Surgeons in Ireland, Ireland
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120
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Ghahraman MA, Farahani S, Tavanai E. A comprehensive review of the effects of caffeine on the auditory and vestibular systems. Nutr Neurosci 2021; 25:2181-2194. [PMID: 33888039 DOI: 10.1080/1028415x.2021.1918984] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Coffee, of which caffeine is a critical component, is probably the most frequently used psychoactive stimulant in the world. The effects of caffeine on the auditory and vestibular system have been investigated under normal and pathological conditions, such as acoustic trauma, ototoxicity, auditory neuropathy, and vestibular disorders, using various tests. Lower incidences of hearing loss and tinnitus have been reported in coffee consumers. The stimulatory effect of caffeine is represented by either a shorter latency or enhanced amplitude in electrophysiological tests of the auditory system. Furthermore, in the vestibular system, oculomotor testing revealed significant effects of caffeine, while other tests did not reveal any significant caffeine effects. It could be that caffeine improves transmission in the auditory and vestibular systems' central pathways. Importantly, the effects of caffeine seem to be dose-dependent. Also, inconsistent findings have been observed regarding caffeine's effects on the auditory and vestibular systems and related disorders. Overall, these findings suggest that caffeine does not strongly influence the peripheral auditory and vestibular systems. Instead, caffeine's effects seem to occur almost solely at the level of the central nervous system.
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Affiliation(s)
- Mansoureh Adel Ghahraman
- Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeid Farahani
- Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Tavanai
- Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
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121
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Reuter SE, Schultz HB, Ward MB, Grant CL, Paech GM, Banks S, Evans AM. The effect of high-dose, short-term caffeine intake on the renal clearance of calcium, sodium and creatinine in healthy adults. Br J Clin Pharmacol 2021; 87:4461-4466. [PMID: 33852164 DOI: 10.1111/bcp.14856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 03/14/2021] [Indexed: 11/30/2022] Open
Abstract
The consumption of caffeine has been linked to osteoporosis, believed to be due to enhanced bone resorption as a result of increased calcium excretion in the urine. However, the amount of calcium in the urine may not necessarily reflect the true effect of caffeine on calcium clearance. This study therefore examined the impact of high-dose, short-term caffeine intake on renal clearance of calcium, sodium and creatinine in healthy adults. In a double-blind clinical study, participants chewed caffeine (n = 12) or placebo (n = 12) gum for 5 minutes at 2-hour intervals over a 6-hour treatment period (800 mg total caffeine). Caffeine increased renal calcium clearance by 77%. Furthermore, the effect was positively correlated with sodium clearance and urine volume, suggesting that caffeine may act through inhibition of sodium reabsorption in the proximal convoluted tubule. This study confirmed that caffeine does increase renal calcium clearance and fosters further investigation into safe consumption of caffeine.
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Affiliation(s)
- Stephanie E Reuter
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - Hayley B Schultz
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - Michael B Ward
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - Crystal L Grant
- Behaviour-Brain-Body Research Group, UniSA Justice & Society, University of South Australia, Adelaide, SA, Australia
| | - Gemma M Paech
- Behaviour-Brain-Body Research Group, UniSA Justice & Society, University of South Australia, Adelaide, SA, Australia.,Department of Respiratory & Sleep Medicine, John Hunter Hospital, Newcastle, NSW, Australia
| | - Siobhan Banks
- Behaviour-Brain-Body Research Group, UniSA Justice & Society, University of South Australia, Adelaide, SA, Australia
| | - Allan M Evans
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, SA, Australia
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122
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Wohlgemuth KJ, Arieta LR, Brewer GJ, Hoselton AL, Gould LM, Smith-Ryan AE. Sex differences and considerations for female specific nutritional strategies: a narrative review. J Int Soc Sports Nutr 2021; 18:27. [PMID: 33794937 PMCID: PMC8015182 DOI: 10.1186/s12970-021-00422-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/12/2021] [Indexed: 12/17/2022] Open
Abstract
Although there is a plethora of information available regarding the impact of nutrition on exercise performance, many recommendations are based on male needs due to the dominance of male participation in the nutrition and exercise science literature. Female participation in sport and exercise is prevalent, making it vital for guidelines to address the sex-specific nutritional needs. Female hormonal levels, such as estrogen and progesterone, fluctuate throughout the mensural cycle and lifecycle requiring more attention for effective nutritional considerations. Sex-specific nutritional recommendations and guidelines for the active female and female athlete have been lacking to date and warrant further consideration. This review provides a practical overview of key physiological and nutritional considerations for the active female. Available literature regarding sex-specific nutrition and dietary supplement guidelines for women has been synthesized, offering evidenced-based practical information that can be incorporated into the daily lives of women to improve performance, body composition, and overall health.
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Affiliation(s)
- Kealey J Wohlgemuth
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Luke R Arieta
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Gabrielle J Brewer
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Andrew L Hoselton
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Lacey M Gould
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Abbie E Smith-Ryan
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
- Department of Nutrition, Gillings School of Public Health, University of North Carolina, Chapel Hill, NC, 27599, USA.
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123
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Georgalas VL, Kalantzi N, Harpur I, Kenny C. The Effects of Caffeine on Voice: A Systematic Review. J Voice 2021:S0892-1997(21)00084-9. [PMID: 33752928 DOI: 10.1016/j.jvoice.2021.02.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/11/2021] [Accepted: 02/15/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Caffeine is considered a dehydrating agent due to its diuretic effects and influences the body's fluid balance. The relationship between voice and hydration has been widely investigated and it is accepted that inadequate hydration has detrimental effects on phonation. Since dehydration negatively affects the vocal folds and caffeine is considered a dehydrating agent, it can be hypothesized that voice might be negatively affected by caffeine intake. This systematic review aims to summarize and appraise the available evidence regarding the effects of caffeine on voice. METHODS Randomized and non-randomized experimental studies of healthy participants were retrieved following an electronic searching of six databases in June 2020. No publication, language or date restrictions were applied. Data extraction of relevant data and risk of bias assessment was conducted independently by two reviewers. RESULTS Five non-randomized experimental studies were deemed eligible for inclusion. The format of the administered interventions in the included studies was either liquid (coffee) or solid (caffeine tablets). Reported outcome measures used to examine the effects of caffeine on phonation consisted of acoustic, aerodynamic and (auditory & self-) perceptual. No measures were adversely affected by caffeine consumption. CONCLUSION Clinicians commonly advise patients to refrain from caffeine, as caffeine intake increases diuresis with subsequent effects on fluid balance. Such imbalances can potentially induce dehydration which can be detrimental to phonation. This notion cannot be supported empirically, as the evidence is deemed unreliable and no firm conclusions can be elicited to guide clinical practice. The results of this review demonstrate the lack of research in the field and the necessity for future investigations in order to inform evidence-based practice through reliable and valid outcomes.
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Affiliation(s)
- Vasilis L Georgalas
- Department of Clinical Speech and Language studies, Trinity College Dublin, Dublin, Ireland.
| | - Niki Kalantzi
- Department of Clinical Speech and Language studies, Trinity College Dublin, Dublin, Ireland
| | | | - Ciarán Kenny
- Department of Clinical Speech and Language studies, Trinity College Dublin, Dublin, Ireland
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da Silva CQ, Fernandes ADS, Teixeira GF, França RJ, Marques MRDC, Felzenszwalb I, Falcão DQ, Ferraz ERA. Risk assessment of coffees of different qualities and degrees of roasting. Food Res Int 2021; 141:110089. [PMID: 33641967 DOI: 10.1016/j.foodres.2020.110089] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 12/23/2020] [Accepted: 12/25/2020] [Indexed: 01/16/2023]
Abstract
During the coffee beans roasting process, occurs the formation of polycyclic aromatic hydrocarbons, which are associated with the incidence of cancer in humans. This study aimed to evaluate the influence of coffee bean quality and roasting degree regarding mutagenicity, cytotoxicity and genotoxicity. Six samples of coffee drink made with roasted and ground Coffea arabica beans from different qualities and roast degrees were used after freeze-drying. Both commercial and special quality grains suffered light, medium and dark roasting. According to the Salmonella/microsome assay, the highest concentration of commercial grain sample (dark roast) significantly increased the number of revertants of the TA98 strain in the absence of metabolization. All the samples induced cytotoxicity to HepG2 cells. These effects can be ranked in the following order from most to least toxic: medium roast - special grain > light roast - special grain > dark roast - commercial grain > dark roast - special grain > light roast - commercial grain > medium roast - commercial grain. None of the samples induced genotoxicity in HepG2 cells. Our findings show that the harmful effects of coffee depend not only on the degree of roasting but also on the grain quality.
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Affiliation(s)
- Carina Quintanilha da Silva
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Fluminense Federal University, Rua Mário Viana, 523, Santa Rosa, CEP 24.241-000 Niterói, RJ, Brazil.
| | - Andréia da Silva Fernandes
- Department of Biophysics and Biometry, University of the State of Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, CEP 20.550-900 Rio de Janeiro, RJ, Brazil.
| | - Gabriela Félix Teixeira
- Department of Pharmacy and Pharmaceutical Administration, Faculty of Pharmacy, Fluminense Federal University, Rua Mário Viana, 523, Santa Rosa, CEP 24.241-000 Niterói, RJ, Brazil.
| | - Rodrigo José França
- Department of Organic Chemistry, University of the State of Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, CEP 20.550-900 Rio de Janeiro, RJ, Brazil.
| | - Mônica Regina da Costa Marques
- Department of Organic Chemistry, University of the State of Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, CEP 20.550-900 Rio de Janeiro, RJ, Brazil.
| | - Israel Felzenszwalb
- Department of Biophysics and Biometry, University of the State of Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, CEP 20.550-900 Rio de Janeiro, RJ, Brazil.
| | - Deborah Quintanilha Falcão
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Fluminense Federal University, Rua Mário Viana, 523, Santa Rosa, CEP 24.241-000 Niterói, RJ, Brazil.
| | - Elisa Raquel Anastácio Ferraz
- Department of Pharmacy and Pharmaceutical Administration, Faculty of Pharmacy, Fluminense Federal University, Rua Mário Viana, 523, Santa Rosa, CEP 24.241-000 Niterói, RJ, Brazil.
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Energy Drinks and Sports Performance, Cardiovascular Risk, and Genetic Associations; Future Prospects. Nutrients 2021; 13:nu13030715. [PMID: 33668219 PMCID: PMC7995988 DOI: 10.3390/nu13030715] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/05/2021] [Accepted: 02/20/2021] [Indexed: 12/29/2022] Open
Abstract
The consumption of energy drinks (e.g., containing caffeine and taurine) has increased over the last decade among adolescents and athletes to enhance their cognitive level and improve intellectual and athletic performance. Numerous studies have shown that drinking moderate doses of such drinks produces beneficial effects, as they considerably boost the sporting performance of elite athletes in various sports, including both endurance and explosive events. However, apart from their ergogenic effects, the regular consumption of energy drinks also increases blood pressure and consequently incites problems such as hypertension, tachycardia, and nervousness, all of which can lead to cardiovascular disorders. A potential positive correlation between genetics and the moderate consumption of energy drinks and athletic performance has recently been reported; notwithstanding, a better understanding of the genetic variants involved in metabolism is a key area for future research to optimize the dose of energy drink consumed and obtain the maximal ergogenic effect in elite sports. The aim of this literature review, therefore, is to present the results of recent studies, classifying them according to the differences in the associations between energy drinks and: (i) Athletic performance; (ii) cardiovascular risk factors while practicing sports; and (iii) genetic associations and future prospects between the consumption of energy drinks and performance.
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126
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Al-Haj Ali SN, Alsulaim HN, Albarrak MI, Farah RI. Spectrophotometric comparison of color stability of microhybrid and nanocomposites following exposure to common soft drinks among adolescents: an in vitro study. Eur Arch Paediatr Dent 2021; 22:675-683. [PMID: 33566286 DOI: 10.1007/s40368-021-00605-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/15/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE To compare the color stability of a microhybrid and two nanocomposites after exposure to common soft drinks among adolescents. METHODS Ninety discs were prepared from a microhybrid (Filtek Z250) and two nanocomposites (Filtek Z350 and Tetric N-Ceram) (n = 30 each). Six discs from each material were then immersed in one of five drinks (iced tea, sports drink, orange juice, cola, and distilled water) for 15 days. Color measurement was performed at baseline and after 15 days using a spectrophotometer according to the CIE L*a*b* system, and the change in color values as well as total color change (ΔE) was calculated and compared. ANOVA and Tukey's HSD test were used to analyze the data (p < 0.05). RESULTS Significant change in color values and total color (ΔE > 3.3) was observed in the composite materials after immersion in the soft drinks compared to immersion in distilled water (ΔE < 3.3). The highest mean values were those of Filtek Z350, being significantly different from the rest of the materials. Independent of the composite material, iced tea resulted in the highest mean values, being significantly different from the rest of the drinks (p < 0.05). CONCLUSION All soft drinks resulted in clinically unacceptable discoloration of the composite materials with maximum discoloration being that following immersion of composite materials, particularly Filtek Z350, in iced tea. Consequently, in dental practice, adolescents should be asked about their consumption of soft drinks, particularly iced tea, and made aware of their potential to discolor composite restorations if they are to receive them.
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Affiliation(s)
- S N Al-Haj Ali
- Department of Orthodontic and Pediatric Dentistry, College of Dentistry, Qassim University, PO Box: 6700, Qassim, 51452, Saudi Arabia.
| | - H N Alsulaim
- College of Dentistry, Qassim University, Qassim, Saudi Arabia
| | - M I Albarrak
- College of Dentistry, Qassim University, Qassim, Saudi Arabia
| | - R I Farah
- Department of Prosthodontics, College of Dentistry, Qassim University, Qassim, Saudi Arabia
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Abstract
Caffeine is well known for its central nervous system–stimulating effect. Toxicity may occur following high-dose caffeine ingestions. We describe a case of caffeine intoxication secondary to reported ingestion of a large dose of caffeine (60,000 mg in tablet form) with an initial serum caffeine level of 608 μmol/L (known lethal serum level starting from 412 μmol/L). This case demonstrates the key clinical manifestations of caffeine intoxication and the effect of its associated massive adrenergic surge with neurologic symptoms, cardiovascular instability, metabolic abnormalities, and the significant risk of mortality. We highlight important kidney management considerations, including protective measures against electrolyte disturbances such as hypokalemia and hypophosphatemia, and the use of prolonged hemodialysis for caffeine elimination. We share our practical decision making and approach to dialysis discontinuation if serum caffeine level reporting is unavailable or delayed.
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Affiliation(s)
- Mohamed Elbokl
- Division of Nephrology, University Health Network-Toronto General Hospital, Toronto, Ontario, Canada
| | - Ian Randall
- Department of Anesthesia, University Health Network-Toronto General Hospital, Toronto, Ontario, Canada
| | - Charmaine Lok
- Division of Nephrology, University Health Network-Toronto General Hospital, Toronto, Ontario, Canada
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128
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Caffeine: A potential strategy to improve survival of neonatal pigs and sheep. Anim Reprod Sci 2021; 226:106700. [PMID: 33517067 DOI: 10.1016/j.anireprosci.2021.106700] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 01/13/2021] [Accepted: 01/16/2021] [Indexed: 01/10/2023]
Abstract
Caffeine is commonly used to treat pre-and postnatal injuries, including apnoea in premature infants, as well as neurological impairment caused by hypoxia or asphyxiation often associated with difficult birthing. As an adenosine antagonist, caffeine is metabolised rapidly and transported into many tissues. Caffeine stimulates the brain respiratory centre, improving respiratory function in immature infants or neonates, provides neuroprotection to the fetal brain, and initiates non-shivering thermoregulation increasing metabolic rates. Recently, potential benefits of caffeine for animal production have been investigated. This has particularly occurred in pig production, where large litters are associated with relatively long parturition durations, and piglets born near the end of the parturition period have an increased risk of mortality due to asphyxia-related birthing injury. Similarly, in sheep, dystocia or prolonged parturition is a significant problem, where neonatal injury, dystocia and death in utero contributes to approximately 46 % of lamb mortalities. Within these two livestock production systems, large prevalence's of neonatal mortality is a persistent issue contributing to lost revenue, as well as being a significant animal welfare concern. Pre-partum maternal caffeine supplementation is a promising strategy to reduce neonatal mortality; however, there needs to be refinement of appropriate quantities administered, duration and administration pathway to provide producers with an efficient and cost-effective method to reduce mortality rates and increase production output. The information in this review details effects, benefits and important considerations regarding caffeine use in animal production, and identifies areas of limited knowledge where further research is needed.
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129
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Mohsenpour H, Pesce M, Patruno A, Bahrami A, Pour PM, Farzaei MH. A Review of Plant Extracts and Plant-Derived Natural Compounds in the Prevention/Treatment of Neonatal Hypoxic-Ischemic Brain Injury. Int J Mol Sci 2021; 22:E833. [PMID: 33467663 PMCID: PMC7830094 DOI: 10.3390/ijms22020833] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 12/13/2022] Open
Abstract
Neonatal hypoxic-ischemic (HI) brain injury is one of the major drawbacks of mortality and causes significant short/long-term neurological dysfunction in newborn infants worldwide. To date, due to multifunctional complex mechanisms of brain injury, there is no well-established effective strategy to completely provide neuroprotection. Although therapeutic hypothermia is the proven treatment for hypoxic-ischemic encephalopathy (HIE), it does not completely chang outcomes in severe forms of HIE. Therefore, there is a critical need for reviewing the effective therapeutic strategies to explore the protective agents and methods. In recent years, it is widely believed that there are neuroprotective possibilities of natural compounds extracted from plants against HIE. These natural agents with the anti-inflammatory, anti-oxidative, anti-apoptotic, and neurofunctional regulatory properties exhibit preventive or therapeutic effects against experimental neonatal HI brain damage. In this study, it was aimed to review the literature in scientific databases that investigate the neuroprotective effects of plant extracts/plant-derived compounds in experimental animal models of neonatal HI brain damage and their possible underlying molecular mechanisms of action.
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Affiliation(s)
- Hadi Mohsenpour
- Department of Pediatrics, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah 75333–67427, Iran;
| | - Mirko Pesce
- Department of Medicine and Aging Sciences, University G. d’Annunzio, 66100 Chieti, Italy
| | - Antonia Patruno
- Department of Medicine and Aging Sciences, University G. d’Annunzio, 66100 Chieti, Italy
| | - Azam Bahrami
- Medical Technology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67158-47141, Iran;
| | - Pardis Mohammadi Pour
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran;
| | - Mohammad Hosein Farzaei
- Medical Technology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67158-47141, Iran;
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Ratajczak AE, Szymczak-Tomczak A, Zawada A, Rychter AM, Dobrowolska A, Krela-Kaźmierczak I. Does Drinking Coffee and Tea Affect Bone Metabolism in Patients with Inflammatory Bowel Diseases? Nutrients 2021; 13:nu13010216. [PMID: 33451170 PMCID: PMC7828660 DOI: 10.3390/nu13010216] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/07/2021] [Accepted: 01/09/2021] [Indexed: 12/16/2022] Open
Abstract
Patients suffering from Crohn’s disease and ulcerative colitis are at higher risk of osteoporosis due to lower bone mineral density. Risk factors of osteoporosis are divided into unmodifiable, namely, age, gender, genetic factors, as well as modifiable, including diet, level of physical activity, and the use of stimulants. Coffee and tea contain numerous compounds affecting bone metabolism. Certain substances such as antioxidants may protect bones; other substances may increase bone resorption. Nevertheless, the influence of coffee and tea on the development and course of inflammatory bowel diseases is contradictory.
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Affiliation(s)
- Alicja Ewa Ratajczak
- Correspondence: (A.E.R.); (I.K.-K.); Tel.: +48-667-385-996 (A.E.R.); +48-8691-343 (I.K.-K.); Fax: +48-8691-686 (A.E.R.)
| | | | | | | | | | - Iwona Krela-Kaźmierczak
- Correspondence: (A.E.R.); (I.K.-K.); Tel.: +48-667-385-996 (A.E.R.); +48-8691-343 (I.K.-K.); Fax: +48-8691-686 (A.E.R.)
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Miyachi T, Nomura K, Minamizono S, Sakai K, Iwata T, Sugano Y, Sawaguchi S, Takahashi K, Mishima K. Factors Associated with Insomnia Among Truck Drivers in Japan. Nat Sci Sleep 2021; 13:613-623. [PMID: 34040470 PMCID: PMC8140935 DOI: 10.2147/nss.s307904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/22/2021] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Truck drivers with insomnia are at a high risk of traffic accidents. We aimed to investigate the prevalence of insomnia and identify its associated factors among truck drivers in Japan. METHODS Participants were 2927 male truck drivers younger than 65 years old. Self-administered questionnaires were used to assess insomnia symptoms, State-Trait Anxiety Inventory, drinking, smoking habits, body mass index, caffeine intake, as well as daily driving hours, consecutive days away from home, and driving distance. Insomnia symptoms included difficulty initiating sleep, maintaining sleep and early morning awakening. Insomnia was defined when any of these symptoms were observed with daily tiredness. RESULTS The prevalence of insomnia among the subjects was 13.3% (n=356), of which 13.5% had difficulty initiating sleep, 78% had difficulty maintaining sleep, and 26.4% had early morning awakening. After adjusting for covariates, drinking habits, daily driving hours, and STAI score were significantly and linearly associated with insomnia; the adjusted odds ratio (OR) of drinking habits for insomnia was 1.74 [95% confidence interval (CI), 1.23-2.47] for heavy drinkers compared to non-drinkers (trend p<0.001); the adjusted OR of daily driving hours was 1.87 (95% CI, 1.00-3.49) for 12 hours or longer in a day compared to <8 hours in a day (trend p<0.001); the adjusted OR of STAI quartiles was 5.30 (95% CI, 3.66-7.67) for the highest quartile compared to the lowest quartile (trend p<0.001). CONCLUSION The present study demonstrated that insomnia is prevalent among truck drivers in Japan, and its risk factors include drinking habits, daily driving hours, and anxiety.
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Affiliation(s)
- Takashi Miyachi
- Department of Medicine, Akita University Graduate School of Medicine, Akita, Japan
| | - Kyoko Nomura
- Department of Environmental Health Science and Public Health, Akita University Graduate School of Medicine, Akita, Japan
| | - Sachiko Minamizono
- Department of Environmental Health Science and Public Health, Akita University Graduate School of Medicine, Akita, Japan
| | - Kazuki Sakai
- Department of Medicine, Akita University Graduate School of Medicine, Akita, Japan
| | - Toyoto Iwata
- Department of Environmental Health Science and Public Health, Akita University Graduate School of Medicine, Akita, Japan
| | - Yuta Sugano
- Department of Medicine, Akita University Graduate School of Medicine, Akita, Japan
| | - Shun Sawaguchi
- Japan Health Insurance Association, Akita Branch, Akita, Japan
| | | | - Kazuo Mishima
- Department of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, Japan
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Simultaneous determination of direct yellow 50, tryptophan, carbendazim, and caffeine in environmental and biological fluid samples using graphite pencil electrode modified with palladium nanoparticles. Talanta 2021; 222:121539. [DOI: 10.1016/j.talanta.2020.121539] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/07/2020] [Accepted: 08/08/2020] [Indexed: 12/19/2022]
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Sindiani AM, Khader Y, Amarin Z. The Association Between Coffee and Tea Consumption During Pregnancy and Preterm Delivery: Case-Control Study. J Multidiscip Healthc 2020; 13:2011-2019. [PMID: 33376341 PMCID: PMC7764766 DOI: 10.2147/jmdh.s286243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 11/19/2020] [Indexed: 12/19/2022] Open
Abstract
Objective To assess a possible association between coffee and tea consumption and preterm delivery. Methods A case-control design was implemented on a sample of women who were admitted for delivery to a tertiary hospital in the north of Jordan. Three hundred and fourteen cases and 796 controls were evaluated. The study was conducted while women were in the hospital for delivery. They were questioned about coffee and tea consumption and relevant confounding factors. Women were asked to state the average number of coffee and tea cups they drank per day. Results The mean coffee consumption among women with preterm delivery was 0.75 cups/day ±1.23 and the mean tea consumption was 1.47 cups/day± 1.76. Multivariable logistic analysis revealed that increased age (OR=1.05; CI=1.02-1.08), parity (OR=3.82, CI=2.58-5.64), history of abortions (OR=1.69; CI=1.21-2.35), family history of preterm deliveries (OR=2.45, CI=1.33-4.52), having treatment for subfertility (OR=12.14, CI=2.39-61.62), diabetes mellitus (OR=2.22, CI=1.06-4.66), worsened emotional status during pregnancy (OR=2.35, CI=1.49-3.72), short inter-pregnancy interval (OR=1.72, CI=1.10-2.72), no iron consumption (OR=1.46, CI=1.06-2.03), using folic acid (OR=2.45, CI=1.33-4.52), and black colour women (OR=2.87, CI=1.35-6.10) were predictive for preterm delivery. After controlling for all significant predictors, coffee and tea consumption during pregnancy was not significantly associated with increased odds of preterm delivery. Conclusion These results do not support an association between coffee and tea consumption and preterm delivery.
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Affiliation(s)
- Amer Mahmoud Sindiani
- Department of Obstetrics and Gynecology, Jordan University of Science and Technology, Irbid, Jordan
| | - Yousef Khader
- Department of Public Health and Community Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Zouhair Amarin
- Department of Obstetrics and Gynecology, Jordan University of Science and Technology, Irbid, Jordan
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Zhou MZ, Yan CY, Zeng Z, Luo L, Zeng W, Huang YH. N-Methyltransferases of Caffeine Biosynthetic Pathway in Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:15359-15372. [PMID: 33206517 DOI: 10.1021/acs.jafc.0c06167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Caffeine (Cf) is one of the important components of plant-derived drinks, such as tea, coffee, and cola. It can protect soft tissues from being infected by pathogens and is also medically beneficial for human health. In this review, we first introduced the Cf biosynthesis pathways in plants and the related N-methyltransferases (NMTs), with a focus on the current research status of the substrate specificity, structural basis for substrate recognition, and catalytic mechanism in members of the caffeine synthase gene family. In addition, we addressed the expression characteristics and potential regulatory mechanisms of NMTs and also projected the future research directions. The goal was to summarize the Cf biosynthetic pathway and related NMTs in plants and to provide the molecular basis for regulating the caffeine biosynthesis, so as to effectively guide future tea and coffee breeding.
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Affiliation(s)
- Meng-Zhen Zhou
- Department of Tea Science, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Chang-Yu Yan
- Department of Tea Science, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Zhen Zeng
- Department of Tea Science, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Li Luo
- Department of Tea Science, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Wen Zeng
- Department of Tea Science, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Ya-Hui Huang
- Department of Tea Science, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, Guangzhou 510642, China
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135
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Labib H, Galal A. Caffeine versus antioxidant combination (Antox) and their role in modifying cadmium-induced testicular injury in adult male albino rats. Andrologia 2020; 53:e13948. [PMID: 33372294 DOI: 10.1111/and.13948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 12/04/2020] [Accepted: 12/06/2020] [Indexed: 12/30/2022] Open
Abstract
The aim of the current work was to compare the roles of caffeine and antioxidants in prevention of cadmium-induced testicular damage when given, in addition to cadmium, in adult male albino rats. Histopathological and ultra-structural examination as well as biochemical and molecular assessments were done. Cadmium chloride (4 mg/kg body weight) was administered via oral gavage from day 21 to 28 of the experiment. Caffeine (25 mg/kg) via intra-peritoneal injection and antioxidant preparation (Antox) 10 mg/kg via oral gavage were given as a pre-treatment for 21 days and concomitantly with Cd from day 21 to 28. Real-time PCR was done for determination of 3, 17 β hydroxy steroid dehydrogenase steroidogenic acute regulatory protein, caspase-9 and mitofusin 1,2 gene expression. Testosterone level, glutathione S-transferase enzyme activity, reactive oxygen species, malondialdehyde and superoxide dismutase were measured spectrophotometrically by ELISA. Histological and ultra-structural evaluation revealed disturbance of normal architecture, vacuolisation and necrosis. Vascular dilatation and congestion and collagen fibre deposition were present. A statistically significant difference was seen in all parameters when caffeine and antioxidants were given against cadmium-induced testicular injury. Overall, we conclude that both caffeine and antioxidants have the ability to reverse cadmium-induced testicular injury when given as pre-treatment prior to cadmium exposure.
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Affiliation(s)
- Heba Labib
- Department of Anatomy and Embryology, Faculty of Medicine, Kasr Alainy, Cairo University, Giza, Egypt
| | - Ahmed Galal
- Department of Anatomy and Embryology, Faculty of Medicine, Kasr Alainy, Cairo University, Giza, Egypt
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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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137
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Tennent R, Ali A, Wham C, Rutherfurd-Markwick K. Narrative Review: Impact of Genetic Variability of CYP1A2, ADORA2A, and AHR on Caffeine Consumption and Response. J Caffeine Adenosine Res 2020. [DOI: 10.1089/caff.2020.0016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Rebecca Tennent
- School of Sport, Exercise and Nutrition, College of Health, Massey University, North Shore City, New Zealand
| | - Ajmol Ali
- School of Sport, Exercise and Nutrition, College of Health, Massey University, North Shore City, New Zealand
- Centre for Metabolic Health Research and Massey University, North Shore City, New Zealand
| | - Carol Wham
- School of Sport, Exercise and Nutrition, College of Health, Massey University, North Shore City, New Zealand
- Centre for Metabolic Health Research and Massey University, North Shore City, New Zealand
| | - Kay Rutherfurd-Markwick
- Centre for Metabolic Health Research and Massey University, North Shore City, New Zealand
- School of Health Sciences, Massey University, North Shore City, New Zealand
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Zareef M, Mehedi Hassan M, Arslan M, Ahmad W, Ali S, Ouyang Q, Li H, Wu X, Chen Q. Rapid prediction of caffeine in tea based on surface-enhanced Raman spectroscopy coupled multivariate calibration. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105431] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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139
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Energy-drink consumption is associated with asthma, allergic rhinitis, and atopic dermatitis in Korean adolescents. Eur J Clin Nutr 2020; 75:1077-1087. [PMID: 33257845 DOI: 10.1038/s41430-020-00812-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 10/28/2020] [Accepted: 11/10/2020] [Indexed: 01/12/2023]
Abstract
BACKGROUND/OBJECTIVES Few studies have evaluated the effects of energy drinks on allergic diseases. The purpose of this investigation was to evaluate the association between energy drinks and various allergic diseases, including asthma, allergic rhinitis, and atopic dermatitis, in a large representative Korean adolescent population. SUBJECTS/METHODS This cross-sectional study used data from the Korea Youth Risk Behavior Web-based Survey collected from 2015 to 2016. A total of 129,809 participants (n = 67,056 for males; n = 62,753 for females) aged 12-18 years were included and were asked about their frequency of consumption of energy drinks such as Hot6®, Redbull®, and Bacchus®. Their history of asthma, allergic rhinitis, and atopic dermatitis throughout life and in the last 12 months were obtained. The association between the frequency of energy-drink consumption and allergic diseases was analyzed using multiple logistic regression with adjustment for various covariates. RESULTS Age, sex, physical activity, obesity, region of residence, economic level, paternal and maternal educational level, smoking, and alcohol consumption differed significantly according to the frequency of energy-drink consumption (each P < 0.001). Frequent energy-drink consumption (≥7 times a week) was significantly associated with asthma throughout life (odds ratio [OR] = 1.30, 95% confidence interval (CI) = 1.03-1.64, P = 0.025), asthma within the last 12 months (OR = 1.65, 95% CI = 1.16-2.35, P = 0.006), allergic rhinitis within the last 12 months (OR = 1.21, 95% CI = 1.02-1.44, P = 0.030), and atopic dermatitis within the last 12 months (OR = 1.49, 95% CI = 1.17-1.90, P = 0.001) compared to no energy-drink consumption in the full-adjusted model. CONCLUSIONS Frequent energy-drink consumption is associated with allergic diseases, including asthma, allergic rhinitis, and atopic dermatitis, in Korean adolescents.
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140
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Nadeem IM, Shanmugaraj A, Sakha S, Horner NS, Ayeni OR, Khan M. Energy Drinks and Their Adverse Health Effects: A Systematic Review and Meta-analysis. Sports Health 2020; 13:265-277. [PMID: 33211984 DOI: 10.1177/1941738120949181] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
CONTEXT Energy drinks are the fastest growing product in the beverage industry. However, there is concern regarding potential for adverse effects with use. OBJECTIVE To evaluate the reported adverse effects of energy drink consumption. DATA SOURCES The electronic databases MEDLINE, EMBASE, and PubMed were searched for relevant studies from inception to November 2019, and pertinent data were abstracted. STUDY SELECTION Only clinical studies reporting adverse events after energy drink consumption were included. STUDY DESIGN Systematic review. LEVEL OF EVIDENCE Level 4. DATA EXTRACTION Data regarding sample size characteristics, energy drink characteristics, comparators, and all adverse events were extracted in duplicate and recorded. RESULTS A total of 32 studies and 96,549 individuals were included. Frequently reported adverse events in the pediatric population were insomnia (35.4%), stress (35.4%), and depressive mood (23.1%). Frequently reported adverse events in the adult population were insomnia (24.7%), jitteriness/restlessness/shaking hands (29.8%), and gastrointestinal upset (21.6%). Alcohol mixed with energy drinks significantly reduced the likelihood of sedation effects but increased the likelihood of stimulatory effects. Energy drink consumption significantly increased the odds of insomnia (OR, 5.02; 95% CI, 1.72-14.63) and jitteriness/activeness (OR, 3.52; 95% CI, 1.28-9.67) compared with the control group. CONCLUSION The authors recommend that individuals avoid frequent energy drink consumption (5-7 energy drinks/week) and avoid co-consumption with alcohol; increased regulatory standards should be placed in the sale of energy drinks, particularly with regard to the pediatric population.
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Affiliation(s)
- Ibrahim M Nadeem
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Ajaykumar Shanmugaraj
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Seaher Sakha
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Nolan S Horner
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Olufemi R Ayeni
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Moin Khan
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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Monji F, Al-Mahmood Siddiquee A, Hashemian F. Can pentoxifylline and similar xanthine derivatives find a niche in COVID-19 therapeutic strategies? A ray of hope in the midst of the pandemic. Eur J Pharmacol 2020; 887:173561. [PMID: 32946870 PMCID: PMC7490668 DOI: 10.1016/j.ejphar.2020.173561] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
Abstract
COVID-19 pandemic presents an unprecedented challenge to identify effective drugs for treatment. Despite multiple clinical trials using different agents, there is still a lack of specific treatment for COVID-19. Having the potential role in suppressing inflammation, immune modulation, antiviral and improving respiratory symptoms, this review discusses the potential role of methylxanthine drugs like pentoxifylline and caffeine in the management of COVID-19 patients. COVID-19 pathogenesis for clinical features like severe pneumonia, acute lung injury (ALI) / acute respiratory distress syndrome (ARDS), and multi-organ failures are excessive inflammation, oxidation, and cytokine storm by the exaggerated immune response. Drugs like pentoxifylline have already shown improvement of the symptoms of ARDS and caffeine has been in clinical use for decades to treat apnea of prematurity (AOP) in preterm infants and improve respiratory function. Pentoxifylline is well-known anti-inflammatory and anti-oxidative molecules that have already shown to suppress Tumor Necrosis Factor (TNF-α) as well as other inflammatory cytokines in pulmonary diseases, and this may be beneficial for better clinical outcomes in COVID-19 patients. Pentoxifylline enhances blood flow, improves microcirculation and tissue oxygenation, and caffeine also efficiently improves tissue oxygenation, asthma, decreases pulmonary hypertension and an effective analgesic. There are significant shreds of evidence that proved the properties of pentoxifylline and caffeine against virus-related diseases as well. Along with the aforementioned evidences and high safety profiles, both pentoxifylline and caffeine offer a glimpse of considerations for future use as a potential adjuvant to COVID-19 treatment. However, additional clinical studies are required to confirm this speculation.
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Affiliation(s)
- Faezeh Monji
- Department of Clinical Pharmacy, Faculty of Pharmacy, Islamic Azad University, Tehran, Iran.
| | | | - Farshad Hashemian
- Department of Clinical Pharmacy, Faculty of Pharmacy, Islamic Azad University, Tehran, Iran.
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142
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Ultraprocessed Food: Addictive, Toxic, and Ready for Regulation. Nutrients 2020; 12:nu12113401. [PMID: 33167515 PMCID: PMC7694501 DOI: 10.3390/nu12113401] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/19/2020] [Accepted: 10/23/2020] [Indexed: 12/15/2022] Open
Abstract
Past public health crises (e.g., tobacco, alcohol, opioids, cholera, human immunodeficiency virus (HIV), lead, pollution, venereal disease, even coronavirus (COVID-19) have been met with interventions targeted both at the individual and all of society. While the healthcare community is very aware that the global pandemic of non-communicable diseases (NCDs) has its origins in our Western ultraprocessed food diet, society has been slow to initiate any interventions other than public education, which has been ineffective, in part due to food industry interference. This article provides the rationale for such public health interventions, by compiling the evidence that added sugar, and by proxy the ultraprocessed food category, meets the four criteria set by the public health community as necessary and sufficient for regulation—abuse, toxicity, ubiquity, and externalities (How does your consumption affect me?). To their credit, some countries have recently heeded this science and have instituted sugar taxation policies to help ameliorate NCDs within their borders. This article also supplies scientific counters to food industry talking points, and sample intervention strategies, in order to guide both scientists and policy makers in instituting further appropriate public health measures to quell this pandemic.
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143
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Encapsulation of caffeine in spray-dried micro-eggs for controlled release: The effect of spray-drying (cooking) temperature. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105979] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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144
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Ajjampur K, Subramaniam A. The importance of early use of beta blockers and gastric decontamination in caffeine overdose: A case report. Aust Crit Care 2020; 34:395-400. [PMID: 33131980 DOI: 10.1016/j.aucc.2020.09.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/13/2020] [Accepted: 09/18/2020] [Indexed: 11/16/2022] Open
Abstract
Caffeine is a common stimulant consumed daily worldwide and available in a wide variety of over-the-counter formulations. It is a mild central nervous system stimulant when used in recommended doses. However, it can be fatal if taken as an intentional or accidental overdose. We report a case of a 48-year-old lady with depression and post-traumatic stress disorder who consumed a significant overdose of caffeine, triggered by the stress that she had contracted coronavirus disease 19. This led to significant cardiovascular and central nervous system toxicity. The condition was identified early and managed appropriately with early β-blockers and gastric decontamination, which saved her life. There are few studies with regard to such modalities on treatment for caffeine overdose; our patient responded rapidly and favourably to the treatment. Why should an emergency physician be aware of this? Caffeine overdose is uncommon but one that clinicians should be aware of. Early identification and intervention with β-adrenergic antagonists and activated charcoal is paramount in caffeine toxicity.
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Affiliation(s)
| | - Ashwin Subramaniam
- Peninsula Health, Frankston, Victoria, Australia; Monash University, Peninsula Clinical School, Australia.
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145
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Ismail T, Donati-Zeppa S, Akhtar S, Turrini E, Layla A, Sestili P, Fimognari C. Coffee in cancer chemoprevention: an updated review. Expert Opin Drug Metab Toxicol 2020; 17:69-85. [PMID: 33074040 DOI: 10.1080/17425255.2021.1839412] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Chemoprevention of cancer refers to the use of natural or synthetic compounds to abolish or perturb a variety of steps in tumor initiation, promotion, and progression. This can be realized through different mechanisms, including activation of free radical scavenging enzymes, control of chronic inflammation, and downregulation of specific signaling pathways. AREAS COVERED The goal of this article is to critically review recent evidence on association between coffee and prevention of different types of cancer, with particular emphasis on the molecular mechanisms and the bioactive compounds involved in its anticancer activity. EXPERT OPINION Coffee is a mixture of different compounds able to decrease the risk of many types of cancer. However, its potential anticancer activity is not completely understood. Hundreds of biologically active components such as caffeine, chlorogenic acid, diterpenes are contained in coffee. Further research is needed to fully elucidate the molecular mechanisms underlying the anticancer effects of coffee and fully understand the role of different confounding factors playing a role in its reported anticancer activity.
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Affiliation(s)
- Tariq Ismail
- Institute of Food Science & Nutrition, Bahauddin Zakariya University , Multan, Pakistan
| | - Sabrina Donati-Zeppa
- Department of Biomolecular Sciences (DISB), Università Degli Studi Di Urbino Carlo Bo , Urbino, Italy
| | - Saeed Akhtar
- Institute of Food Science & Nutrition, Bahauddin Zakariya University , Multan, Pakistan
| | - Eleonora Turrini
- Department for Life Quality Studies, Alma Mater Studiorum - Università Di Bologna , Rimini, Italy
| | - Anam Layla
- National Institute of Food Science & Technology, University of Agriculture Faisalabad , Faisalabad, Pakistan
| | - Piero Sestili
- Department of Biomolecular Sciences (DISB), Università Degli Studi Di Urbino Carlo Bo , Urbino, Italy
| | - Carmela Fimognari
- Department for Life Quality Studies, Alma Mater Studiorum - Università Di Bologna , Rimini, Italy
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146
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Turco CV, Arsalan SO, Nelson AJ. The Influence of Recreational Substance Use in TMS Research. Brain Sci 2020; 10:E751. [PMID: 33080965 PMCID: PMC7603156 DOI: 10.3390/brainsci10100751] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 12/30/2022] Open
Abstract
(1) Background: Transcranial magnetic stimulation (TMS) approaches are widely used to study cortical and corticospinal function. However, responses to TMS are subject to significant intra-and inter-individual variability. Acute and chronic exposure to recreational substances alters the excitability of the sensorimotor system and may contribute to the variability in TMS outcome measures. The increasing prevalence of recreational substance use poses a significant challenge for executing TMS studies, but there is a lack of clarity regarding the influence of these substances on sensorimotor function. (2) Methods: The literature investigating the influence of alcohol, nicotine, caffeine and cannabis on TMS outcome measures of corticospinal, intracortical and interhemispheric excitability was reviewed. (3) Results: Both acute and chronic use of recreational substances modulates TMS measures of excitability. Despite the abundance of research in this field, we identify knowledge gaps that should be addressed in future studies to better understand the influence of these substances on TMS outcomes. (4) Conclusions: This review highlights the need for TMS studies to take into consideration the history of participant substance use and to control for acute substance use prior to testing.
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Affiliation(s)
| | | | - Aimee J. Nelson
- Department of Kinesiology, McMaster University, Hamilton, ON L8S 4L8, Canada; (C.V.T.); (S.O.A.)
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147
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Korekar G, Kumar A, Ugale C. Occurrence, fate, persistence and remediation of caffeine: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34715-34733. [PMID: 31811612 DOI: 10.1007/s11356-019-06998-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Pharmaceutical and personal care products (PPCPs) have gained attention in recent years due to their continuous discharge in natural waters. Their persistence in the environment has impacted flora, fauna and human being worldwide. One of the most common PPCPs is caffeine (1, 3, 7-trimethylxanthine) which acts as a stimulant to the central nervous system in humans and is found in nature in about 60 plant species, especially in coffee, tea and cacao plants. Here we discuss the evidence with respect to caffeine occurrence, its persistence and remediation in light of increasing knowledge and the impact of caffeine on the environment. Daily intake of caffeine around the world is found to increase due to the frequent introduction of new caffeinated beverages as well as increased consumption of coffee, tea and carbonated soft drinks, which has led to increase in its concentration in water bodies including agricultural soil. The caffeine concentration in different water system, studied by various authors is also described. Diverse effects of the use of caffeine on several organisms including humans are also briefly presented. Therefore, urgent attention for the removal of caffeine and its derivatives is the need of the hour. Various methods described in literature for caffeine degradation/removal is also presented. Another widely used technique in environmental remediation is molecular imprinting (MIP); however, only few MIPs have been demonstrated for caffeine which is also discussed. Regular monitoring can be useful to control toxic effects of caffeine. Graphical abstract.
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Affiliation(s)
- Girish Korekar
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra, 440010, India
| | - Anupama Kumar
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra, 440010, India.
| | - Chetna Ugale
- Department of Botany, Indira Mahavidyalaya Kalamb, Dist. Yavatmal, Maharashtra, 445401, India
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148
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Booth N, Saxton J, Rodda SN. Estimates of Caffeine Use Disorder, Caffeine Withdrawal, Harm and Help-seeking in New Zealand: A cross-sectional survey. Addict Behav 2020; 109:106470. [PMID: 32485545 DOI: 10.1016/j.addbeh.2020.106470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Caffeine Use Disorder (CUD) is not yet formally recognized in the DSM-5, but emerging evidence suggests CUD could impact up to one in five people. The primary aim of this study was to estimate levels of caffeine consumption and its associations with CUD and withdrawal, taking socio-demographic characteristics (age, gender, ethnicity, income) into account. Secondary aims were to measure caffeine-related harm and treatment preferences. METHODS We administered an online cross-sectional survey via Facebook to a convenience sample of 2379 adults in New Zealand. Caffeine consumption was assessed across six products: coffee, tea, energy drinks, cola, alcohol mixed with caffeine, and other products (e.g., caffeine pills, sports supplements). RESULTS 20% of participants met proposed criteria for CUD, with 30% meeting DSM-5 criteria for caffeine withdrawal. Moderate (200-400 mg per day) and high consumption (>400 mg per day) was associated with a three-fold increase in the odds of CUD and a two-fold increase in the odds of withdrawal. Women and current smokers were at higher risk of CUD and withdrawal even at moderate consumption levels. Nearly 85% of respondents experienced at least one caffeine-related harm in the past 12-months. The number of harms increased with level of caffeine consumption. Nearly 50% indicated a self-help treatment for caffeine reduction would be of interest. CONCLUSIONS High rates of CUD and caffeine withdrawal amongst moderate caffeine users, women and smokers suggests caffeine consumption guidelines may need refinement. Caffeine-related harm that is not clinically meaningful may still be of concern to individuals and warrants further investigation.
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Affiliation(s)
- N Booth
- School of Population Health, University of Auckland, New Zealand
| | - J Saxton
- School of Population Health, University of Auckland, New Zealand
| | - S N Rodda
- School of Population Health, University of Auckland, New Zealand
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149
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Prevalence, Predictors, and Awareness of Coffee Consumption and Its Trend among Saudi Female Students. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17197020. [PMID: 32992846 PMCID: PMC7579070 DOI: 10.3390/ijerph17197020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/30/2022]
Abstract
This study aimed to investigate the prevalence, trends, and predictors of coffee consumption among Saudi female students and its association with anthropometric and demographic variables. A survey-based study using a face-to-face interview was designed, and 930 (aged 21.5 ± 2.1 years) apparently healthy female students from different departments of King Saud University participated. The prevalence of coffee consumption was significantly higher (88.2%, p < 0.03) in the central Riyadh region. Coffee consumers had significantly higher prevalence of being overweight than non-consumers (p = 0.02). The frequency of coffee consumption was significantly higher (p < 0.02) in students who were single and belonged to families with a moderate income level. Coffee consumption was significantly higher among first-year students with a high-scale grade point average (GPA) (p < 0.001 and p = 0.03, respectively). Increased coffee consumption during exam and stress conditions was associated with unhealthy dietary habits such as using more sugar and spices. The prevalence of coffee consumption was high among Saudi females. High body mass index (BMI) and increased family income level were strong determinants for coffee consumption. Continued nutritional education and awareness about the potential positive and negative health effects of coffee consumption and the importance of food label use should be provided to younger generations in order to correct the wrong perceptions.
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150
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Anderson DE, German RE, Harrison ME, Bourassa KN, Taylor CE. Real and Perceived Effects of Caffeine on Sprint Cycling in Experienced Cyclists. J Strength Cond Res 2020; 34:929-933. [PMID: 31996613 DOI: 10.1519/jsc.0000000000003537] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Anderson, DE, German, RE, Harrison, ME, Bourassa, KN, and Taylor, CE. Real and perceived effects of caffeine on sprint cycling in experienced cyclists. J Strength Cond Res 34(4): 929-933, 2020-Caffeine ingestion before an exercise bout may provide ergogenic effects on anaerobic performance, particularly in trained athletes. However, the degree of influence of caffeine may be coupled with the placebo effect. A double-blind, placebo-controlled, randomized design was used to determine the real and perceived effects of caffeine on anaerobic performance. Ten competitively trained cyclists (9 men and 1 woman) completed 3 trials of the Wingate Anaerobic Test (WAnT). Subjects were given coffee that they believed contained a high caffeine dose, a low caffeine dose, or a placebo 45 minutes before WAnT. Subjects were actually given 2 placebos (decaffeinated coffee) and one dose of caffeine (280 mg). Level of significance was p ≤ 0.05. No significant differences were found between trials for blood lactate concentration and heart rate. Seven of the subjects (70%) correctly identified the caffeine trial as the high caffeine trial. Time to peak power was significantly shorter for the trial in which subjects incorrectly guessed they had consumed caffeine when given the placebo compared with placebo trial (1.6 ± 0.1 vs. 2.3 ± 0.2 seconds). Power drop was significantly higher for the trial in which subjects incorrectly guessed they had consumed caffeine when given the placebo compared with placebo trial (524 ± 37 vs. 433 ± 35 W). There seems to be a placebo effect of caffeine on anaerobic performance. Improved performance may result from psychological advantages rather than physical advantages. Coaches may find it beneficial to use a placebo to improve anaerobic performance, especially if concerned about the side effects or cost of caffeine.
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