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Zhong Y, Yang C, Lu Y, Lv L. Theanine Capture of Reactive Carbonyl Species in Humans after Consuming Theanine Capsules or Green Tea. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:13240-13249. [PMID: 38825967 DOI: 10.1021/acs.jafc.4c02481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Acrolein (ACR), methylglyoxal (MGO), and glyoxal (GO) are a class of reactive carbonyl species (RCS), which play a crucial role in the pathogenesis of chronic and age-related diseases. Here, we explored a new RCS inhibitor (theanine, THE) and investigated its capture capacity on RCS in vivo by human experiments. After proving that theanine could efficiently capture ACR instead of MGO/GO by forming adducts under simulated physiological conditions, we further detected the ACR/MGO/GO adducts of theanine in the human urine samples after consumption of theanine capsules (200 and 400 mg) or green tea (4 cups, containing 200 mg of theanine) by using ultraperformance liquid chromatography-time-of-flight-high-resolution mass spectrometry. Quantitative assays revealed that THE-ACR, THE-2ACR-1, THE-MGO, and THE-GO were formed in a dose-dependent manner in the theanine capsule groups; the maximum value of the adducts of theanine was also tested. Furthermore, besides the RCS adducts of theanine, the RCS adducts of catechins could also be detected in the drinking tea group. Whereas, metabolite profile analysis showed that theanine could better capture RCS produced in the renal metabolic pathway than catechins. Our findings indicated that theanine could reduce RCS in the body in two ways: as a pure component or contained in tea leaves.
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Affiliation(s)
- Yuqing Zhong
- Department of Food Science and Technology, School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Nanjing 210023, P. R. China
| | - Chen Yang
- Department of Food Science and Technology, School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Nanjing 210023, P. R. China
| | - Yongling Lu
- Department of Food Science and Technology, School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Nanjing 210023, P. R. China
| | - Lishuang Lv
- Department of Food Science and Technology, School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Nanjing 210023, P. R. China
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Conway AE, Verdi M, Shaker MS, Bernstein JA, Beamish CC, Morse R, Madan J, Lee MW, Sussman G, Al-Nimr A, Hand M, Albert DA. Beyond Confirmed Mast Cell Activation Syndrome: Approaching Patients With Dysautonomia and Related Conditions. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2024:S2213-2198(24)00281-2. [PMID: 38499084 DOI: 10.1016/j.jaip.2024.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/23/2024] [Accepted: 03/09/2024] [Indexed: 03/20/2024]
Abstract
Allergist-immunologists face significant challenges as experts in an ever-evolving field of neuroimmunology. Among these challenges is the increasingly frequent need to counsel patients with suspected mast cell activation disorders about perceived comorbidities, which may include hypermobile Ehlers-Danlos syndrome, amplified pain syndrome, fibromyalgia, burning sensation syndromes, migraines, irritable bowel syndrome, and postural orthostatic tachycardia syndrome. Patients may experience comorbid anxiety, panic disorder, and depression associated with disturbed sleep, fatigue, and cognitive impairment that often worsen when their physical symptoms increase in severity. These conditions may mimic mast cell activation disorders and are emotionally taxing for patients and clinicians because they are often accompanied by vague diagnostic courses, perceived unmanageability, social stigma, and significant impairment in quality of life. Combined with relatively poorly researched therapies, it is no surprise that clinicians may feel overwhelmed or find it difficult to provide consistently compassionate care for this population. In this article, we review available therapies for these conditions, which run the gamut from physical therapy to antidepressants to multimodal pain control. We highlight the benefit of multidisciplinary care within the primary care home, which includes an important role by the allergist-immunologist. By outlining simple approaches to initial treatment, we hope to empower clinicians with the tools needed to curb emotional burnout and embrace this patient population with compassion.
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Affiliation(s)
| | | | - Marcus S Shaker
- Department of Medicine, Geisel School of Medicine at Dartmouth, Hanover, NH; Department of Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, NH; Section of Allergy and Immunology, Dartmouth-Hitchcock Medical Center, Lebanon, NH.
| | - Jonathan A Bernstein
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Immunology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Claire C Beamish
- Department of Internal Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH
| | - Richard Morse
- Department of Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, NH; Section of Pediatric Neurology, Children's Hospital at Dartmouth, Lebanon, NH
| | - Juliette Madan
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH; Department of Pediatrics, Division of Child Psychiatry, Dartmouth-Hitchcock Medical Center, Lebanon, NH; Department of Psychiatry, Division of Child Psychiatry, Dartmouth-Hitchcock Medical Center, Lebanon, NH
| | - Michael W Lee
- Department of Medical Education, Dartmouth Geisel School of Medicine, Hanover, NH
| | - Gordon Sussman
- Division of Immunology, University of Toronto, St Michael's Hospital, Toronto, Ontario, Canada
| | - Amer Al-Nimr
- Department of Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, NH; Section of Pediatric Gastroenterology, Dartmouth-Hitchcock Medical Center, Lebanon, NH
| | - Matthew Hand
- Department of Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, NH; Section of Pediatric Nephrology and Integrative Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH
| | - Daniel A Albert
- Department of Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, NH; Section of Rheumatology, Dartmouth-Hitchcock Medical Center, Lebanon, NH
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Xu W, Song Y, Xiao W, Gong Z. Regulatory Effects and Mechanisms of L-Theanine on Neurotransmitters via Liver-Brain Axis Under a High Protein Diet. Mol Neurobiol 2024; 61:783-798. [PMID: 37659037 DOI: 10.1007/s12035-023-03608-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 08/22/2023] [Indexed: 09/05/2023]
Abstract
Excessive protein intake causes liver and brain damage and neurotransmitter disorders, thereby inducing cognitive dysfunction. L-theanine can regulate the neurotransmitter content and show great potential in liver and brain protection. However, it remains unclear whether l-theanine effectively regulates neurotransmitter content under high-protein diet. A 40-day feeding experiment was performed in Sprague Dawley rats to investigate the regulatory effects and mechanisms of l-theanine on neurotransmitters via liver-brain axis in high-protein diets. The results showed that a 30% protein diet increased the liver and brain neurotransmitter content while maintaining the normal structure of liver and the hippocampal CA1 of brain and improving the autonomous behavior of rats. In contrast, 40% and 50% protein diets decreased the content of neurotransmitters, affected autonomous behavior, destroyed the hippocampal CA1 of brain structure, increased hepatic inflammatory infiltration, lipid degeneration, and hepatocyte eosinophilic change in liver, increased liver AST, ALT, MDA, CRP, and blood ammonia level, and decreased liver SOD and CAT level. However, l-theanine improved liver and brain neurotransmitter content, autonomous behavior, liver and hippocampal brain structure, and liver biochemical indicators in 40% and 50% protein diets. To explore how LTA can eliminate the adverse effects of a high-protein diet, we analyzed different metabolites and proteomes and using western blotting for validate quantitatively. We found that l-theanine regulates the activity of PF4 and G protein subunit alpha i2, increases the content of brain-derived neurotrophic factor and dopamine under a 20% protein diet. In addition, l-theanine can activate the adenylate cyclase-protein kinase A pathway through the protein alpha/beta-hydrolase domain protein 12 to regulate the content of neurotransmitters under a 40% protein diet, thereby exerting a neuroprotective effect.
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Affiliation(s)
- Wei Xu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, Hunan, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, Hunan, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
| | - Yuxin Song
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, Hunan, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, Hunan, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
| | - Wenjun Xiao
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, Hunan, China.
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, Hunan, China.
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China.
| | - Zhihua Gong
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, Hunan, China.
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, Hunan, China.
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China.
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Yu J, Li S, Li M, Zhang Y, Tong D, Xu Y, Wang C, Xu J. Amelioration of nonylphenol-induced anxiety/depression-like behaviors in male rats using green tea and Zn-Se tea interventions. Toxicol Res (Camb) 2024; 13:tfae003. [PMID: 38229977 PMCID: PMC10788678 DOI: 10.1093/toxres/tfae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/28/2023] [Accepted: 01/02/2024] [Indexed: 01/18/2024] Open
Abstract
Objective This study aimed to investigate the effects of exposure to nonylphenol (NP) on anxiety/depression-like behaviors in rats and alleviation of those effects via green tea and zinc selenium (Zn-Se) tea interventions. Material and Methods Totally, 40 male specific-pathogen free (SPF) Sprague-Dawley (SD) male rats were randomly divided into four groups (n = 10 rats per group): control group (5 ml/kg corn oil), NP group (40 mg/kg NP), NP + GT group (40 mg/kg NP + 1 g/kg/day green tea), and NP + Zn-Se tea group (40 mg/kg NP + 1 g/kg/day ZST). All dose-based groups received oral gavage of either corn oil or drugs over a 6-month period: NP at a dosage of 40 mg/kg/day was administered to rats for the initial 3 months, followed by a combination of NP with green tea and NP with Zn-Se tea for the subsequent 3 months. Results Tea intervention resulted in weight loss in rats. The hippocampal tissue NP level in the tea group was slightly lower than that in the NP group. Following tea intervention, compared with the NP group, the residence time in the light-dark box test was shortened PGT = 0.048, P < 0.001), and the number of entries into the closed arm in the elevated plus maze test in the tea-treated group was significantly reduced. In addition, the immobility time in the central square in the open field test decreased. The sucrose preference index score in the sucrose preference test increased, and the immobility time in the forced swimming test was reduced (PGT = 0.049, PZST < 0.001). The effects of Zn-S e tea were superior to green tea. The damage to the hippocampal tissues in the group treated with tea was less than that in the NP group. The cellular arrangement was tighter with degeneration, deepstaining, and pyknotic nerve cells were visible. The nuclei in the NP group were atrophied, and the cells were sparsely arranged. Compared with the control group, serum brain-derived neurotrophic factor (BDNF) level was lower in the NP group. The serum corticosterone level in the NP group was elevated. Compared with the NP group, serum corticosterone level was reduced in the NP + Zn-Se tea group. Conclusion Chronic NP exposure induced anxiety/depression-like behaviors in rats. Green tea effectively reduced the damage to the hippocampus and prefrontal cortex induced by NP. The effects of Zn-Se tea were slightly more noticeable than those of conventional green tea. Highlights 1) Chronic NP exposure induced anxiety/depression-like behaviors in rats.2) Zn-Se tea reduced the damage of hippocampal and prefrontal cortex induced by NP.3) NP-induced depression accompanied by the changes of BDNF, CORT and neuropathology.
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Affiliation(s)
- Jie Yu
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
| | - Shengnan Li
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
| | - Mizhuan Li
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
| | - Yujie Zhang
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
| | - Dayan Tong
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
| | - Yuzhu Xu
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
| | - Chengxing Wang
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
| | - Jie Xu
- School of Public Health, Zunyi Medical University, No. 6 Xuefu Road, Xinpu New District, Zunyi City, Guizhou Province 5643006, P. R. of China
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Sun Q, Wang H, Zhang H, Zhang F. Association between the healthy eating index and anxiety among Chinese elderly: A population-based cross-sectional study. Prev Med Rep 2024; 37:102576. [PMID: 38268617 PMCID: PMC10805664 DOI: 10.1016/j.pmedr.2023.102576] [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: 06/16/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/26/2024] Open
Abstract
Introduction Given that few studies have examined the relationship between healthy eating and anxiety in older adults, this study aimed to assess the relationship between the healthy eating index and anxiety in an older adult population using the Chinese Longevity Health Survey (CLHLS). Methods A national cross-sectional study from the CLHLS in 2018. The healthy eating index was constructed based on the frequency of intake of 13 dietary variables. Anxiety was assessed by the Generalized Anxiety Disorder scale. We used multivariate binary logistic regression to explore the association between the healthy eating index and anxiety and reported as odds ratio (OR) and 95 % confidence interval (95 % CI). Results A total of 13,873 older adults were included in the analysis after excluding participants with missing key variables. After adjusting for potential confounders, compared with participants in the lowest quartile of a healthy eating index, those in the second to the fourth quartile group had 4.7 %, 20.7 %, and 28.4 % lower odds of anxiety compared with those in the first quartile, respectively. Restricted cubic spline curves showed that anxiety risk decreased with increasing healthy eating index, and for each unit increase in the healthy eating index, the risk of anxiety in older adults decreased by 2.3 % (OR = 0.977; 95 % CI 0.970-0.985). Discussion In Chinese older adults, a healthy diet was associated with lower anxiety. Although prospective studies are still needed to confirm these associations in older populations, this result emphasizes the need to focus on dietary diversity in older adults to promote healthy aging.
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Affiliation(s)
- Qiuzi Sun
- Department of Nursing, Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hui Wang
- Department of Anorectology, Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huachun Zhang
- Department of Nursing, Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Fan Zhang
- Department of Nephrology A, Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Yilmaz U, Buzdagli Y, Polat ML, Bakir Y, Ozhanci B, Alkazan S, Ucar H. Effect of single or combined caffeine and L-Theanine supplementation on shooting and cognitive performance in elite curling athletes: a double-blind, placebo-controlled study. J Int Soc Sports Nutr 2023; 20:2267536. [PMID: 37815006 PMCID: PMC10566444 DOI: 10.1080/15502783.2023.2267536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023] Open
Abstract
PURPOSE Previous studies have investigated the effect of single or combined caffeine (CAF) and L-theanine (THE) intake on attention performance. However, its effect on shooting performance and cognitive performance in a sport is unknown. The aim of this study was to investigate the hypothesis "Does single or combined CAF and THE supplementation have an effect on shooting and cognitive performance in elite curling athletes?." It is predicted that over the next decade, studies based on nutritional ergogenic supplements in the developing sport of curling will continue to increase, leading to a significant increase in studies examining the effects of CAF and THE supplementation, alone or in combination, on throwing and cognitive performance in elite curling athletes. METHODS In this double-blind, randomized controlled crossover study, twenty-two elite national curling athletes (age 20.20 ± 1.61 and sports age 6.20 ± 0.51 years, height 174.10 ± 7.21 cm, BMI 21.80 ± 3.47 kg/m2) were randomly assigned to CAF (6 mg/kg single dose CAF), THE (6 mg/kg single dose THE), CAF*THE (6 mg/kg CAF and 6 mg/kg THE combined) and PLA (400 mg maltodextrin) groups at each of four sessions. 60 minutes after taking the supplement, the athletes were first given the Stroop test and then asked to shoot. RESULTS Our main findings have shown that the performance of athletes in guard (F=3.452, P < .001, ηp2 = .842), draw (F=1.647, P < .001, ηp2 = .485), and take-out (F=3.121, P < .001, ηp2 = .743) shot styles significantly improved when comparing the combined intake of CAF and THE to the PLA. Regarding cognitive performance evaluation through the Stroop test, during the NR task (F=4.743, P = .001, ηp2 = .653), the combined intake of CAF and THE significantly improved reaction times compared to the intake of single CAF, THE, or PLA. The best reaction times during the CR and ICR (respectively; F=2.742, P = .004, ηp2 = .328; F = 1.632, P < .001, ηp2 = .625) tasks were achieved with the combined CAF and THE intake, showing a significant improvement compared to PLA. During the NER (F=2.961, P < .001, ηp2 = .741), task, the combined intake of CAF and THE significantly improved error rates compared to the intake of CAF, THE, or PLA single. The best accuracy rates during the CER and ICER (respectively; F=4.127, P < .001, ηp2 = .396; F=3.899, P < .001, ηp2 = .710) tasks were achieved with the combined CAF and THE intake, leading to a significant reduction in error rates compared to PLA. Based on these findings, it has been demonstrated in this study that the best shooting scores and cognitive performance were achieved, particularly with the combined intake of CAF and THE. CONCLUSIONS Based on these findings, it has been demonstrated in this study that the best shooting scores and cognitive performance were achieved, particularly with the combined intake of CAF and THE. The combined use of these supplements has been found to be more effective on shooting and cognitive performance than their single use.
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Affiliation(s)
- Umut Yilmaz
- Hakkâri University, Department of Physical Education and Sports, Faculty of Education, Hakkâri, Turkey
| | - Yusuf Buzdagli
- Erzurum Technical University, Department of Coaching Education, Faculty of Sport Sciences, Erzurum, Turkey
| | | | - Yusuf Bakir
- Erzurum Technical University, Institute of Health Sciences, Erzurum, Turkey
| | - Burak Ozhanci
- Erzurum Technical University, Institute of Health Sciences, Erzurum, Turkey
| | - Sena Alkazan
- Erzurum Technical University, Institute of Health Sciences, Erzurum, Turkey
| | - Halil Ucar
- Atatürk University, Institute of Winter Sports and Sport Sciences, Erzurum, Turkey
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Dassanayake TL, Wijesundara D, Kahathuduwa CN, Weerasinghe VS. Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study. Nutr Neurosci 2023; 26:1138-1146. [PMID: 36263942 DOI: 10.1080/1028415x.2022.2136884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND L-theanine is a non-protein-forming amino acid found in tea. Previous research shows high doses (100-400 mg) of L-theanine enhances attention, mainly by reducing mind wandering and distracter processing. We hypothesized that these indirect mechanisms could significantly improve the performance of low-level attentional tasks, whereas the relative contribution could be less in complex attentional tasks that require active, higher-order processing of target stimuli. METHODS To test this hypothesis, we conducted a double-blind, placebo-controlled, counterbalanced, four-way crossover study in 32 healthy young adults, where we compared the effects of three doses of L-theanine (100, 200 and 400 mg) with a placebo (distilled water), administered before and 50 min after dosing, on three attentional tasks from the Cambridge Neuropsychological Test Automated Battery [viz. Reaction Time (RTI)-visuomotor speed, Rapid Visual Information Processing (RVP)-sustained attention, and Stop Signal Task (SST)-inhibitory control]. Results were analyzed in dose × time repeated measures ANOVA models, with subsequent pairwise comparisons. RESULTS Active doses significantly improved reaction times in the RTI (100-200 mg) and RVP (200-400 mg) tasks from baseline (p < 0.05), but once controlled for the change-from-baseline caused by placebo, only the RTI simple reaction times showed significant improvements, following 100 mg (Δ = 16.3 ms, p = 0.009) and 200 mg (Δ = 16.9 ms, p = 0.009) of L-theanine. CONCLUSIONS Consistent with our hypothesis, these findings suggest that L-theanine significantly improves attention in simple visuomotor tasks, but not in more complex sustained attention tasks, or executive control tasks that require top-down inhibition of pre-active responses.
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Affiliation(s)
- Tharaka L Dassanayake
- Department of Physiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
- School of Psychological Sciences, The University of Newcastle, Callaghan, Australia
| | - Devasmitha Wijesundara
- Department of Physiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - Chanaka N Kahathuduwa
- Department of Psychiatry, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA
- Department of Laboratory Science and Primary Care, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Vajira S Weerasinghe
- Department of Physiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
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Castro A, Gili M, Visser M, Penninx BWJH, Brouwer IA, Montaño JJ, Pérez-Ara MÁ, García-Toro M, Watkins E, Owens M, Hegerl U, Kohls E, Bot M, Roca M. Soft Drinks and Symptoms of Depression and Anxiety in Overweight Subjects: A Longitudinal Analysis of an European Cohort. Nutrients 2023; 15:3865. [PMID: 37764652 PMCID: PMC10536294 DOI: 10.3390/nu15183865] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/11/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND Studies about the association of carbonated/soft drinks, coffee, and tea with depression and anxiety are scarce and inconclusive and little is known about this association in European adults. Our aim was to examine the association between the consumption of these beverages and depressive and anxiety symptom severity. METHODS A total of 941 European overweight adults (mean age, 46.8 years) with subsyndromal depression that participated in the MooDFOOD depression prevention randomized controlled trial (Clinical Trials.gov identifier: NCT2529423; date of the study: from 2014 to 2018) were analyzed. Depressive and anxiety symptom severity and beverage consumption were assessed using multilevel mixed-effects ordinal logistic regression models for each beverage consumption (carbonated/soft drink with sugar, carbonated/soft drink with non-nutritive sweeteners, coffee, and tea) with the three repeated measures of follow-up (baseline and 6 and 12 months). A case report form for participants' sociodemographic and clinical characteristics, the Food Frequency Questionnaire, the Patient Health Questionnaire-9, the Generalized Anxiety Disorder 7-Item Scale, the MINI International Neuropsychiatric Interview 5.0, the Short Questionnaire to Assess Health-Enhancing Psychical Activity, and the Alcohol Use Disorders Identification Test were the research tools used. RESULTS Daily consumption of carbonated/soft drinks with sugar was associated with a higher level of anxiety. Trends towards significance were found for associations between both daily consumption of carbonated/soft drinks with sugar and non-nutritive sweeteners and a higher level of depression. No relationship was found between coffee and tea consumption and the level of depression and anxiety. CONCLUSIONS The high and regular consumption of carbonated/soft drink with sugar (amount of consumption: ≥1 unit (200 mL)/day) tended to be associated with higher level of anxiety in a multicountry sample of overweight subjects with subsyndromal depressive symptoms. It is important to point out that further research in this area is essential to provide valuable information about the intake patterns of non-alcoholic beverages and their relationship with affective disorders in the European adult population.
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Affiliation(s)
- Adoración Castro
- Research Institute of Health Sciences (IUNICS), University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain; (M.G.); (M.Á.P.-A.); (M.G.-T.); (M.R.)
- Health Research Institute of the Balearic Islands (IdISBa), Hospital Universitario Son Espases, Edificio S, 07120 Palma de Mallorca, Spain;
- Department of Psychology, University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain
| | - Margalida Gili
- Research Institute of Health Sciences (IUNICS), University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain; (M.G.); (M.Á.P.-A.); (M.G.-T.); (M.R.)
- Health Research Institute of the Balearic Islands (IdISBa), Hospital Universitario Son Espases, Edificio S, 07120 Palma de Mallorca, Spain;
- Department of Psychology, University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain
| | - Marjolein Visser
- Department of Health Sciences, Faculty of Science, Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (M.V.); (I.A.B.)
| | - Brenda W. J. H. Penninx
- Department of Psychiatry, Amsterdam Public Health Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands; (B.W.J.H.P.); (M.B.)
| | - Ingeborg A. Brouwer
- Department of Health Sciences, Faculty of Science, Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (M.V.); (I.A.B.)
| | - Juan José Montaño
- Health Research Institute of the Balearic Islands (IdISBa), Hospital Universitario Son Espases, Edificio S, 07120 Palma de Mallorca, Spain;
- Department of Psychology, University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain
| | - María Ángeles Pérez-Ara
- Research Institute of Health Sciences (IUNICS), University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain; (M.G.); (M.Á.P.-A.); (M.G.-T.); (M.R.)
| | - Mauro García-Toro
- Research Institute of Health Sciences (IUNICS), University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain; (M.G.); (M.Á.P.-A.); (M.G.-T.); (M.R.)
- Health Research Institute of the Balearic Islands (IdISBa), Hospital Universitario Son Espases, Edificio S, 07120 Palma de Mallorca, Spain;
- Department of Medicine, University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain
| | - Ed Watkins
- Department of Psychology, University of Exeter, Exeter EX4 4PY, UK; (E.W.); (M.O.)
| | - Matt Owens
- Department of Psychology, University of Exeter, Exeter EX4 4PY, UK; (E.W.); (M.O.)
| | - Ulrich Hegerl
- Department of Psychiatry, Psychosomatics and Psychotherapy, Goethe Universität Frankfurt am Main, 60528 Frankfurt am Main, Germany;
| | - Elisabeth Kohls
- Department of Psychiatry and Psychotherapy, Medical Faculty, University Leipzig, 04109 Leipzig, Germany;
| | - Mariska Bot
- Department of Psychiatry, Amsterdam Public Health Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands; (B.W.J.H.P.); (M.B.)
| | - Miquel Roca
- Research Institute of Health Sciences (IUNICS), University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain; (M.G.); (M.Á.P.-A.); (M.G.-T.); (M.R.)
- Health Research Institute of the Balearic Islands (IdISBa), Hospital Universitario Son Espases, Edificio S, 07120 Palma de Mallorca, Spain;
- Department of Medicine, University of the Balearic Islands (UIB), 07122 Palma de Mallorca, Spain
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9
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Shigeta M, Aoi W, Morita C, Soga K, Inoue R, Fukushima Y, Kobayashi Y, Kuwahata M. Matcha green tea beverage moderates fatigue and supports resistance training-induced adaptation. Nutr J 2023; 22:32. [PMID: 37403052 DOI: 10.1186/s12937-023-00859-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 06/22/2023] [Indexed: 07/06/2023] Open
Abstract
BACKGROUND Resistance training adaptively increases muscle strength and mass, contributing to athletic performance and health promotion. Dietary intervention with natural foods provides nutrients that help accelerate muscle adaptation to training. Matcha green tea contains several bioactive factors such as antioxidants, amino acids, and dietary fibers; however, its effect on muscle adaptation is unclear. In this study, we aimed to investigate the effects of matcha beverage intake on muscle adaptation to resistance training. METHODS Healthy, untrained men were randomized into placebo and matcha groups. Participants consumed either a matcha beverage containing 1.5 g of matcha green tea powder or a placebo beverage twice a day and engaged in resistance training programs for 8 (trial 1) or 12 weeks (trial 2). RESULTS In trial 1, maximum leg strength after training tended to increase more in the matcha group than that in the placebo group. In the matcha group, subjective fatigue after exercise at 1 week of training was lower than that in the placebo group. Gut microbe analysis showed that the abundance of five genera changed after matcha intake. The change in Ruminococcus, Butyricimonas, and Oscillospira compositions positively correlated with the change in maximum strength. In trial 2, the change in skeletal muscle mass in response to training was larger in the matcha group. In addition, the salivary cortisol level was lower in the matcha group than that in the placebo group. CONCLUSION Daily intake of matcha green tea beverages may help in muscle adaptation to training, with modulations in stress and fatigue responses and microbiota composition.
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Affiliation(s)
- Mizuho Shigeta
- Laboratory of Nutrition Science, Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-Cho Shimogamo, Sakyo-Ku, Kyoto, 606-8522, Japan
| | - Wataru Aoi
- Laboratory of Nutrition Science, Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-Cho Shimogamo, Sakyo-Ku, Kyoto, 606-8522, Japan.
| | - Chiharu Morita
- Laboratory of Nutrition Science, Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-Cho Shimogamo, Sakyo-Ku, Kyoto, 606-8522, Japan
| | - Kurumi Soga
- Laboratory of Nutrition Science, Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-Cho Shimogamo, Sakyo-Ku, Kyoto, 606-8522, Japan
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Applied Biological Sciences, Faculty of Agriculture, Setsunan University, Osaka, Japan
| | - Yoichi Fukushima
- Department of Health Science, Faculty of Sports and Health Science, Daito Bunka University, Saitama, Japan
| | - Yukiko Kobayashi
- Laboratory of Nutrition Science, Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-Cho Shimogamo, Sakyo-Ku, Kyoto, 606-8522, Japan
| | - Masashi Kuwahata
- Laboratory of Nutrition Science, Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Hangi-Cho Shimogamo, Sakyo-Ku, Kyoto, 606-8522, Japan
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10
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Robescu MS, Alcántara AR, Calvio C, Morelli CF, Speranza G, Ubiali D, Bavaro T. l-Theanine Goes Greener: A Highly Efficient Bioprocess Catalyzed by the Immobilized γ-Glutamyl Transferase from Bacillus subtilis. CHEMSUSCHEM 2023; 16:e202202108. [PMID: 36655933 DOI: 10.1002/cssc.202202108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/18/2023] [Indexed: 06/17/2023]
Abstract
l-Theanine (l-Th) was synthesized by simply mixing the reactants (l-glutamine and ethylamine in water) at 25 °C and Bacillus subtilis γ-glutamyl transferase (BsGGT) covalently immobilized on glyoxyl-agarose according to a methodology previously reported by our research group; neither buffers, nor other additives were needed. Ratio of l-glutamine (donor) to ethylamine (acceptor), pH, enzymatic units (IU), and reaction time were optimized (molar ratio of donor/acceptor=1 : 8, pH 11.6, 1 IU mL-1 , 6 h), furnishing l-Th in 93 % isolated yield (485 mg, 32.3 g L-1 ) and high purity (99 %), after a simple filtration of the immobilized biocatalyst, distillation of the volatiles (unreacted ethylamine) and direct lyophilization. Immobilized BsGGT was re-used (four reaction cycles) with 100 % activity retention. This enzymatic synthesis represents a straightforward, fast, high-yielding, and easily scalable approach to l-Th preparation, besides having a favorable green chemistry metrics.
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Affiliation(s)
- Marina S Robescu
- Department of Drug Sciences, University of Pavia, viale Taramelli 12, Pavia, Italy
| | - Andrés R Alcántara
- Department of Chemistry in Pharmaceutical Sciences, Complutense University of Madrid, Plaza de Ramon y Cajal s/n, Madrid, Spain
| | - Cinzia Calvio
- Department of Biology and Biotechnology, University of Pavia, via Ferrata 1, Pavia, Italy
| | - Carlo F Morelli
- Department of Chemistry, University of Milan, via Golgi 19, Milano, Italy
| | - Giovanna Speranza
- Department of Chemistry, University of Milan, via Golgi 19, Milano, Italy
| | - Daniela Ubiali
- Department of Drug Sciences, University of Pavia, viale Taramelli 12, Pavia, Italy
| | - Teodora Bavaro
- Department of Drug Sciences, University of Pavia, viale Taramelli 12, Pavia, Italy
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11
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Effects of Chronic Administration of Green Tea Ethanol Extract on Sleep Architecture in Mice: A Comparative Study with a Representative Stimulant Caffeine. Nutrients 2023; 15:nu15041042. [PMID: 36839400 PMCID: PMC9967785 DOI: 10.3390/nu15041042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/14/2023] [Accepted: 02/18/2023] [Indexed: 02/22/2023] Open
Abstract
Wakefulness is defined as a state in which individuals can react to a change in situations. The number of people staying awake and compensating for lack of sleep has increased in recent years. Caffeine, a representative stimulant, is the most extensively consumed compound globally and is mainly consumed through coffee. Although green tea (Camellia sinensis L.) contains high caffeine content like coffee, its arousal-inducing effects have not yet been studied. In the present study, we aimed to identify the arousal-inducing effect of GT during a chronic administration period (three weeks) using analysis of sleep architecture. Treatment with GT (1500 mg/kg) significantly elevated the sleep latency and wakefulness throughout the treatment period, and chronic administration of GT consistently maintained an increase in wakefulness for up to 3 h. During the treatment period, the arousal-inducing effect of GT (1500 mg/kg) occurred without any change in the tolerance phenomenon or withdrawal symptoms, similar to that observed with caffeine (25 mg/kg). GT (1500 mg/kg) containing 95.6 mg/kg of caffeine did not produce a better arousal-inducing effect than caffeine at 25 mg/kg. These results indicate that the arousal-inducing effect of GT persisted for three weeks without adverse effects and that GT can control the arousal-inducing effects of caffeine due to the hypnotic effects of its other constituents.
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12
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Unno K, Taguchi K, Konishi T, Ozeki M, Nakamura Y. Theanine, a Tea-Leaf-Specific Amino Acid, Alleviates Stress through Modulation of Npas4 Expression in Group-Housed Older Mice. Int J Mol Sci 2023; 24:ijms24043983. [PMID: 36835393 PMCID: PMC9962395 DOI: 10.3390/ijms24043983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/03/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023] Open
Abstract
Group rearing is a common housing condition, but group-housed older mice show increased adrenal hypertrophy, a marker of stress. However, the ingestion of theanine, an amino acid unique to tea leaves, suppressed stress. We aimed to elucidate the mechanism of theanine's stress-reducing effects using group-reared older mice. The expression of repressor element 1 silencing transcription factor (REST), which represses excitability-related genes, was increased in the hippocampus of group-reared older mice, whereas the expression of neuronal PAS domain protein 4 (Npas4), which is involved in the regulation of excitation and inhibition in the brain, was lower in the hippocampus of older group-reared mice than in same-aged two-to-a-house mice. That is, the expression patterns of REST and Npas4 were found to be just inversely correlated. On the other hand, the expression levels of the glucocorticoid receptor and DNA methyltransferase, which suppress Npas4 transcription, were higher in the older group-housed mice. In mice fed theanine, the stress response was reduced and Npas4 expression tended to be increased. These results suggest that Npas4 expression was suppressed by the increased expression of REST and Npas4 downregulators in the group-fed older mice, but that theanine avoids the decrease in Npas4 expression by suppressing the expression of Npas4 transcriptional repressors.
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Affiliation(s)
- Keiko Unno
- Tea Science Center, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
- Correspondence:
| | - Kyoko Taguchi
- Tea Science Center, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tomokazu Konishi
- Faculty of Bioresources Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita 010-0195, Japan
| | - Makoto Ozeki
- Taiyo Kagaku Co., Ltd., 1-3 Takaramachi, Yokkaichi 510-0844, Japan
| | - Yoriyuki Nakamura
- Tea Science Center, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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13
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A Tea Plant ( Camellia sinensis) FLOWERING LOCUS C-like Gene, CsFLC1, Is Correlated to Bud Dormancy and Triggers Early Flowering in Arabidopsis. Int J Mol Sci 2022; 23:ijms232415711. [PMID: 36555355 PMCID: PMC9779283 DOI: 10.3390/ijms232415711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
Flowering and bud dormancy are crucial stages in the life cycle of perennial angiosperms in temperate climates. MADS-box family genes are involved in many plant growth and development processes. Here, we identified three MADS-box genes in tea plant belonging to the FLOWERING LOCUS C (CsFLC) family. We monitored CsFLC1 transcription throughout the year and found that CsFLC1 was expressed at a higher level during the winter bud dormancy and flowering phases. To clarify the function of CsFLC1, we developed transgenic Arabidopsis thaliana plants heterologously expressing 35S::CsFLC1. These lines bolted and bloomed earlier than the WT (Col-0), and the seed germination rate was inversely proportional to the increased CsFLC1 expression level. The RNA-seq of 35S::CsFLC1 transgenic Arabidopsis showed that many genes responding to ageing, flower development and leaf senescence were affected, and phytohormone-related pathways were especially enriched. According to the results of hormone content detection and RNA transcript level analysis, CsFLC1 controls flowering time possibly by regulating SOC1, AGL42, SEP3 and AP3 and hormone signaling, accumulation and metabolism. This is the first time a study has identified FLC-like genes and characterized CsFLC1 in tea plant. Our results suggest that CsFLC1 might play dual roles in flowering and winter bud dormancy and provide new insight into the molecular mechanisms of FLC in tea plants as well as other plant species.
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14
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Yang BW, Zou P, Chen Q, Sun L, Ling X, Yang H, Zhou NY, Wang LH, Huang LP, Liu JY, Yang HF, Cao J, Ao L. Lifestyle-related risk factors correlated with mental health problems: A longitudinal observational study among 686 male college students in Chongqing, China. Front Public Health 2022; 10:1040410. [PMID: 36466472 PMCID: PMC9716196 DOI: 10.3389/fpubh.2022.1040410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/07/2022] [Indexed: 11/21/2022] Open
Abstract
Aim Public concerns over the mental health problems of college students are rising. Previous research show that female tend to suffer more from mental health problems than males, with few studies focusing on males. This study sought to explore the association of lifestyle-related risk factors with the prevalence of mental health problems among male college students in China. Methods The lifestyle information and mental health status of 686 male college students from Chongqing, China, were assessed in 2014, and 582 of them were followed up a year later. Participants completed a questionnaire assessing demographic and lifestyle factors which include sleep quality, computer usage, sedentariness, physical activity, smoking, current alcohol, coke, coffee, and milk tea drinking, and current tea/fried food/baked food consumption. Mental health problems were measured using the Depression Anxiety Stress Scale-21 (DASS-21). Results Univariate analyses indicated that age, sleep latency, sleep duration, computer usage time, milk tea drinking, and fried food consumption were potential risk factors for mental health problems (p's < 0.05). Multivariate analysis further revealed that, either at baseline or during follow-up, participants with (i) more computer usage time were at a higher risk of having depression symptoms (p's < 0.05) and (ii) a higher frequency of fried food consumption were associated with a higher risk of having depression, anxiety, and stress symptoms (p's < 0.05). Additionally, the cross-lagged analysis showed that (i) computer usage time in 2014 is positively correlated with depression status (β = 0.106, p < 0.05) but not anxiety (β = 0.047, p > 0.05) and stress (β = 0.019, p > 0.05) status a year later and (ii) fried food consumption in 2014 is positively correlated with depression (β = 0.129, p < 0.01), anxiety (β = 0.168, p < 0.001), and stress (β = 0.113, p < 0.01) status a year later. Conclusions Computer usage time and fried food consumption were lifestyle-related risk factors for mental health problems in male college students in Chongqing, China. These results might emphasize further preventive strategies for mental health problems, especially in male college students.
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Affiliation(s)
- Bin-Wei Yang
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health and Management, Ningxia Medical University, Yinchuan, China,College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Peng Zou
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Qing Chen
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Lei Sun
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Xi Ling
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Huan Yang
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Ni-Ya Zhou
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China,Department of Scientific Research and Education, Women and Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Li-Hong Wang
- West China School of Public Health, Sichuan University, Chengdu, China
| | - Lin-Ping Huang
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Jin-Yi Liu
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China
| | - Hui-Fang Yang
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health and Management, Ningxia Medical University, Yinchuan, China
| | - Jia Cao
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health and Management, Ningxia Medical University, Yinchuan, China,College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China,*Correspondence: Jia Cao
| | - Lin Ao
- College of Preventive Medicine, Institute of Toxicology, Third Military Medical University, Chongqing, China,Lin Ao
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15
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Combining Topical and Oral Botanicals for Skin Redness, Pigmentation, Sleep, and Mood: A Randomized Controlled Study. J Clin Med 2022; 11:jcm11226690. [PMID: 36431167 PMCID: PMC9697836 DOI: 10.3390/jcm11226690] [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: 10/11/2022] [Revised: 11/05/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
External and internal stressors have been found to adversely affect skin health and overall wellness. There is growing interest in the use of anti-inflammatory and antioxidant plant-derived ingredients, such as ashwagandha, saffron, l-theanine, and tocopherol, to mitigate the impact of these stressors. In this study, we evaluate the effectiveness of oral and topical products (InnerCalm and SuperCalm, respectively) that contain naturally derived ingredients on skin redness, skin pigmentation, sleep, and mood in healthy females with Fitzpatrick skin type 1−4 and self-perceived sensitive skin. Subjects were randomized to an oral (oral group), a topical (topical group), or a combination of both the oral and topical interventions (combined group). Standardized photography-based image analysis was used to assess skin redness and pigment. Self-assessments of mood and sleep were measured with the abbreviated profile of mood states (POMS) questionnaire, and the Pittsburgh sleep-quality index (PSQI), respectively. Assessments were made at the baseline, 1-week, 4-weeks, and 8-weeks of the intervention. The average facial redness decreased in the topical group at 8-weeks (p < 0.001) and in the combined group at 4-weeks (p < 0.05) and 8-weeks (p < 0.001), relative to the baseline. The average facial pigmentation decreased in the oral (p < 0.05) and combined (p < 0.05) cohorts at 8-weeks, relative to the baseline. The oral group exhibited an improvement in sleep quality at 1-week relative to the baseline (p < 0.05) and at 8-weeks relative to the baseline (p < 0.05). Finally, the combined group demonstrated improvement in fatigue (p < 0.01) and confusion (p < 0.05) at 8-weeks relative to the baseline, though total mood disturbance increased in all 3 groups over the course of the study. Measured outcomes relating to mood may be confounded with the timing of the study, which ran during the COVID pandemic. Overall, we demonstrate the role of oral and topical herbs and of nutraceuticals for skin health and wellness. Further research will be needed to elucidate synergistic effects in oral and topical combination regimens.
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16
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López-Martínez MI, Miguel M, Garcés-Rimón M. Protein and Sport: Alternative Sources and Strategies for Bioactive and Sustainable Sports Nutrition. Front Nutr 2022; 9:926043. [PMID: 35782926 PMCID: PMC9247391 DOI: 10.3389/fnut.2022.926043] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/17/2022] [Indexed: 11/13/2022] Open
Abstract
Nutrition and sport play an important role in achieving a healthy lifestyle. In addition to the intake of nutrients derived from the normal diet, some sport disciplines require the consumption of supplements that contribute positively to improved athletic performance. Protein intake is important for many aspects related to health, and current evidence suggests that some athletes require increased amounts of this nutrient. On the other hand, society's demand for more environmentally friendly products, focus on the search for alternative food sources more sustainable. This review aims to summarize the latest research on novel strategies and sources for greener and functional supplementation in sport nutrition. Alternative protein sources such as insects, plants or mycoproteins have proven to be an interesting substrate due to their high added value in terms of bioactivity and sustainability. Protein hydrolysis has proven to be a very useful technology to revalue by-products, such as collagen, by producing bioactive peptides beneficial on athletes performance and sport-related complications. In addition, it has been observed that certain amino acids from plant sources, as citrulline or theanine, can have an ergogenic effect for this target population. Finally, the future perspectives of protein supplementation in sports nutrition are discussed. In summary, protein supplementation in sports nutrition is a very promising field of research, whose future perspective lies with the search for alternatives with greater bioactive potential and more sustainable than conventional sources.
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Affiliation(s)
- Manuel I. López-Martínez
- Departamento de Bioactividad y Análisis de Alimenos, Instituto de Investigación en Ciencias de la Alimentación (CIAL, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid), Madrid, Spain
| | - Marta Miguel
- Departamento de Bioactividad y Análisis de Alimenos, Instituto de Investigación en Ciencias de la Alimentación (CIAL, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid), Madrid, Spain
- *Correspondence: Marta Miguel
| | - Marta Garcés-Rimón
- Grupo de Investigación en Biotecnología Alimentaria, Universidad Francisco de Vitoria, Madrid, Spain
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18
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Li S, Zhang L, Wan X, Zhan J, Ho CT. Focusing on the recent progress of tea polyphenol chemistry and perspectives. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.12.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Dassanayake TL, Kahathuduwa CN, Weerasinghe VS. L-theanine improves neurophysiological measures of attention in a dose-dependent manner: a double-blind, placebo-controlled, crossover study. Nutr Neurosci 2022; 25:698-708. [PMID: 32777998 DOI: 10.1080/1028415x.2020.1804098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Objective: L-theanine, a non-proteinic amino acid found in tea, is known to enhance attention particularly in high doses, with no reported adverse effects. We aimed to determine whether oral administration of L-theanine acutely enhances neurophysiological measures of selective attention in a dose-dependent manner.Methods: In a double-blind, placebo-controlled, counterbalanced, 4-way crossover study in a group of 27 healthy young adults, we compared the effects of 3 doses of L-theanine (100, 200 and 400 mg) with a placebo (distilled water) on latencies of amplitudes of attentive and pre-attentive cognitive event-related potentials (ERPs) recorded in an auditory stimulus discrimination task, before and 50 min after dosing.Results: Compared to the placebo, 400 mg of theanine showed a significant reduction in the latency of the parietal P3b ERP component (p < 0.05), whereas no significant changes were observed with lower doses. A subsequent exploratory regression showed that each 100-mg increase in dose reduces the P3b latency by 4 ms (p < 0.05). No dose-response effect was observed in P3b amplitude, pre-attentive ERP components or reaction time.Discussion: The findings indicate L-theanine can increase attentional processing of auditory information in a dose-dependent manner. The linear dose-response attentional effects we observed warrant further studies with higher doses of L-theanine.
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Affiliation(s)
- Tharaka L Dassanayake
- Department of Physiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka.,School of Psychology, The University of Newcastle, Callaghan, Australia
| | - Chanaka N Kahathuduwa
- Department of Psychiatry, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA.,Department of Laboratory Science and Primary Care, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Vajira S Weerasinghe
- Department of Physiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
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Allameh M, Orsat V. Herbal Anxiolytics: Sources and Their Preparation Methods. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2043895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mina Allameh
- Department of Bioresource Engineering, McGill University, Ste-Anne-de-Bellevue, Québec, Canada
| | - V. Orsat
- Department of Bioresource Engineering, McGill University, Ste-Anne-de-Bellevue, Québec, Canada
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21
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Rizzo R, Prato A, Scerbo M, Saia F, Barone R, Curatolo P. Use of Nutritional Supplements Based on L-Theanine and Vitamin B6 in Children with Tourette Syndrome, with Anxiety Disorders: A Pilot Study. Nutrients 2022; 14:nu14040852. [PMID: 35215501 PMCID: PMC8875106 DOI: 10.3390/nu14040852] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Tourette syndrome (TS) is a neurodevelopmental disorder characterized by tics and co-occurring disorders. It has been suggested that anxiety occurs in 2–45% patients affected by Tourette syndrome. Despite dietary and nutritional factors have been found to affect a range of neurological conditions, no more studies have investigated the relationship between nutritional supplements and tics. Objective: To evaluate the effectiveness of supplementation of both L-Theanine and Vitamin B6 in reducing tics and co-occurring disorders in a sample of youth with chronic tic disorder (CTD) or Tourette syndrome with anxiety symptoms. Design: A open-label trial. Patients affected by Tourette syndrome were randomized to receive nutritional supplements based on L-Theanine and vitamin B6, or psychoeducation (PE). Participants: 34 children (30 boys and 4 girls) aged between 4 and 17 years affected by Tourette syndrome or chronic tic disorder, associated with anxiety symptoms. Results: Patients in both groups showed a reduction in the severity of tic and anxiety symptoms. Supplementation with L-Theanine and vitamin B6 was significantly more effective than psychoeducation in reducing tics and co-occurring disorders, as measured by neuropsychological findings. Conclusions: Supplementation of both L-Theanine and Vitamin B6 may help in the treatment of tic disorders associated with anxious symptoms. Between-group differences in clinician-rated severity did reach statistical significance only for tics. Despite this finding, further placebo-controlled trials are needed.
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Affiliation(s)
- Renata Rizzo
- Child and Adolescent Neurology and Psychiatric Section, Department of Clinical and Experimental Medicine, Catania University, 95124 Catania, Italy; (A.P.); (M.S.); (F.S.); (R.B.)
- Correspondence:
| | - Adriana Prato
- Child and Adolescent Neurology and Psychiatric Section, Department of Clinical and Experimental Medicine, Catania University, 95124 Catania, Italy; (A.P.); (M.S.); (F.S.); (R.B.)
- Department of Cognitive Sciences, Psychology, Education and Cultural Studies, University of Messina, 98121 Messina, Italy
| | - Miriam Scerbo
- Child and Adolescent Neurology and Psychiatric Section, Department of Clinical and Experimental Medicine, Catania University, 95124 Catania, Italy; (A.P.); (M.S.); (F.S.); (R.B.)
| | - Federica Saia
- Child and Adolescent Neurology and Psychiatric Section, Department of Clinical and Experimental Medicine, Catania University, 95124 Catania, Italy; (A.P.); (M.S.); (F.S.); (R.B.)
| | - Rita Barone
- Child and Adolescent Neurology and Psychiatric Section, Department of Clinical and Experimental Medicine, Catania University, 95124 Catania, Italy; (A.P.); (M.S.); (F.S.); (R.B.)
| | - Paolo Curatolo
- Child Neurology and Psychiatry Unit, Systems Medicine Department, University of Rome Tor Vergata, 00133 Rome, Italy;
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22
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Metabolic Syndrome, Cognitive Impairment and the Role of Diet: A Narrative Review. Nutrients 2022; 14:nu14020333. [PMID: 35057514 PMCID: PMC8780484 DOI: 10.3390/nu14020333] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/04/2022] [Accepted: 01/10/2022] [Indexed: 01/27/2023] Open
Abstract
Background: This narrative review presents the association between metabolic syndrome (MetS), along with its components, and cognition-related disorders, as well as the potential reversal role of diet against cognitive impairment by modulating MetS. Methods: An electronic research in Medline (Pubmed) and Scopus was conducted. Results: MetS and cognitive decline share common cardiometabolic pathways as MetS components can trigger cognitive impairment. On the other side, the risk factors for both MetS and cognitive impairment can be reduced by optimizing the nutritional intake. Clinical manifestations such as dyslipidemia, hypertension, diabetes and increased central body adiposity are nutrition-related risk factors present during the prodromal period before cognitive impairment. The Mediterranean dietary pattern stands among the most discussed predominantly plant-based diets in relation to cardiometabolic disorders that may prevent dementia, Alzheimer’s disease and other cognition-related disorders. In addition, accumulating evidence suggests that the consumption of specific dietary food groups as a part of the overall diet can improve cognitive outcomes, maybe due to their involvement in cardiometabolic paths. Conclusions: Early MetS detection may be helpful to prevent or delay cognitive decline. Moreover, this review highlights the importance of healthy nutritional habits to reverse such conditions and the urgency of early lifestyle interventions.
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Huang R, Wang JY, Yao MZ, Ma CL, Chen L. Quantitative trait loci mapping for free amino acid content using an albino population and SNP markers provides insight into the genetic improvement of tea plants. HORTICULTURE RESEARCH 2022; 9:6510850. [PMID: 35040977 PMCID: PMC8788373 DOI: 10.1093/hr/uhab029] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/02/2021] [Accepted: 09/20/2021] [Indexed: 05/07/2023]
Abstract
Free amino acids are one of the main chemical components in tea, and they contribute to the pleasant flavor, function, and quality of tea, notably the level of theanine. Here, a high-density genetic map was constructed to characterize quantitative trait loci (QTLs) for free amino acid content. A total of 2688 polymorphic SNP markers were obtained using genotyping-by-sequencing (GBS) based on 198 individuals derived from a pseudotestcross population of "Longjing 43" × "Baijiguan", which are elite and albino tea cultivars, respectively. The 1846.32 cM high-density map with an average interval of 0.69 cM was successfully divided into 15 linkage groups (LGs) ranging from 93.41 cM to 171.28 cM. Furthermore, a total of 4 QTLs related to free amino acid content (theanine, glutamate, glutamine, aspartic acid and arginine) identified over two years were mapped to LG03, LG06, LG11 and LG14. The phenotypic variation explained by these QTLs ranged from 11.8% to 23.7%, with an LOD score from 3.56 to 7.7. Furthermore, several important amino acid metabolic pathways were enriched based on the upregulated differentially expressed genes (DEGs) among the offspring. These results will be essential for fine mapping genes involved in amino acid pathways and diversity, thereby providing a promising avenue for the genetic improvement of tea plants.
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Affiliation(s)
- Rong Huang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute of the Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Jun-Ya Wang
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute of the Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Ming-Zhe Yao
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute of the Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Chun-Lei Ma
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute of the Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Corresponding authors: E-mail: ,
| | - Liang Chen
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Tea Research Institute of the Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
- Corresponding authors: E-mail: ,
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24
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Fukuda T, Akiyama S, Takahashi K, Iwadate Y, Ano Y. Effect of non-alcoholic beer containing matured hop bitter acids on mood states in healthy adults: A single-arm pilot study. Nurs Health Sci 2021; 24:7-16. [PMID: 34741379 PMCID: PMC9300118 DOI: 10.1111/nhs.12898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 10/11/2021] [Accepted: 10/20/2021] [Indexed: 11/30/2022]
Abstract
This study aimed to investigate the effect of non-alcoholic beer containing matured hop bitter acids on mood states among healthy adults older than 20 years. This study was an open-label longitudinal intervention design in which each participant served as their control. For three weeks, we evaluated the effect of non-alcoholic beer containing 35 mg of matured hop bitter acids on mood, sleep quality, and work performance. The data of 97 participants (age range: 23-72 years, median age: 42) were analyzed. After the intervention, we found that matured hop bitter acids significantly improved total mood state, including anxiety, depression, fatigue, and vigor, compared with the baseline. Furthermore, sleep quality and absolute presenteeism were significantly improved after the intervention compared with the baseline. The present exploratory study suggested that 3-week supplementation with matured hop bitter acids improved mood and peripheral symptoms in persons of a wide range of ages. Although further investigation is needed, the findings suggested that non-alcoholic beer in daily life might become a choice for maintaining mood states. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | - Shiori Akiyama
- Kirin Central Institute, Kirin Holdings Company, Limited
| | | | - Yasuo Iwadate
- Department of Neurological Surgery, Chiba University Graduate School of Medicine
| | - Yasuhisa Ano
- Kirin Central Institute, Kirin Holdings Company, Limited
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25
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Unno K, Nakamura Y. Green Tea Suppresses Brain Aging. Molecules 2021; 26:molecules26164897. [PMID: 34443485 PMCID: PMC8401650 DOI: 10.3390/molecules26164897] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/06/2021] [Accepted: 08/10/2021] [Indexed: 12/20/2022] Open
Abstract
Epidemiological studies have demonstrated that the intake of green tea is effective in reducing the risk of dementia. The most important component of green tea is epigallocatechin gallate (EGCG). Both EGCG and epigallocatechin (EGC) have been suggested to cross the blood–brain barrier to reach the brain parenchyma, but EGCG has been found to be more effective than EGC in promoting neuronal differentiation. It has also been suggested that the products of EGCG decomposition by the intestinal microbiota promote the differentiation of nerve cells and that both EGCG and its degradation products act on nerve cells with a time lag. On the other hand, the free amino acids theanine and arginine contained in green tea have stress-reducing effects. While long-term stress accelerates the aging of the brain, theanine and arginine suppress the aging of the brain due to their anti-stress effect. Since this effect is counteracted by EGCG and caffeine, the ratios between these green tea components are important for the anti-stress action. In this review, we describe how green tea suppresses brain aging, through the activation of nerve cells by both EGCG and its degradation products, and the reductions in stress achieved by theanine and arginine.
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26
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Xu Y, Zhu J, Hu J, Zou Z, Zhao Y, Lai L, Xu P, Song Y, Cheng H. L-Theanine Alleviates IMQ-Induced Psoriasis Like Skin Inflammation by Downregulating the Production of IL-23 and Chemokines. Front Pharmacol 2021; 12:719842. [PMID: 34381369 PMCID: PMC8350042 DOI: 10.3389/fphar.2021.719842] [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: 06/03/2021] [Accepted: 07/12/2021] [Indexed: 11/13/2022] Open
Abstract
Psoriasis, the most common skin inflammatory disease, is characterized by massive keratinocyte proliferation and immune cell infiltration into epidermis. L-Theanine (L-THE), a nonproteinogenic amino acid derived from green tea (Camellia sinensis), has been proved to possess the properties of anti-inflammatory, antidepressants and neuroprotective. However, whether L-THE has a therapeutic effect on psoriasis is still unknown. In this study, we found that the epidermal thickness and inflammatory response were significantly reduced in Imiquimod (IMQ)-induced psoriasis mice by applying with L-THE on mice skin. The expression of proliferation and inflammation associated genes such as keratin 17, IL-23 and CXCL1-3 was also downregulated by L-THE. Furthermore, L-THE inhibited the production of IL-23 in dendritic cells (DCs) after IMQ treatment, and decreased the levels of chemokines in keratinocytes treated with IL-17A by downregulating the expression of IL-17RA. RNA-seq and KEGG analysis revealed that L-THE significantly regulated the expression of IL-17A and NF-κB signaling pathway-associated genes. Metabolomics analysis displayed that L-THE promoted propanoate metabolism which has been reported to inhibit the activity of TH17 cells. Therefore, our results demonstrated that L-THE significantly decreases the levels of IL-23 and chemokines, and attenuates IMQ-induced psoriasis like skin inflammation by inhibiting the activation of NF-κB and IL-17A signaling pathways, and promoting the propanoate metabolism. Our findings suggest that topical applied L-THE can be used as a topical drug candidate for the treatment of psoriasis or as an adjuvant treatment of ustekinumab or secukinumab to prevent the relapse of psoriasis.
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Affiliation(s)
- Yaohan Xu
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiang Zhu
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jingyi Hu
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Ziqi Zou
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Yueling Zhao
- Tea Research Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Lihua Lai
- Institute of Immunology, Zhejiang University School of Medicine, Hangzhou, China
| | - Ping Xu
- Tea Research Institute, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Yinjing Song
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hao Cheng
- Department of Dermatology and Venereology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
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27
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Nutraceuticals as Potential Targets for the Development of a Functional Beverage for Improving Sleep Quality. BEVERAGES 2021. [DOI: 10.3390/beverages7020033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Functional beverages can be a valuable component of the human diet with the ability to not only provide essential hydration but to deliver important bioactive compounds that can contribute to chronic disease treatment and prevention. One area of the functional beverage market that has seen an increase in demand in recent years are beverages that promote relaxation and sleep. Sleep is an essential biological process, with optimal sleep being defined as one of adequate duration, quality and timing. It is regulated by a number of neurotransmitters which are, in turn, regulated by dietary intake of essential bioactive compounds. This narrative review aimed to evaluate the latest evidence of the sleep promoting properties of a selection of bioactive compounds (such as L-theanine and L-tryptophan) for the development of a functional beverage to improve sleep quality; and the effectiveness of traditional sleep promoting beverages (such as milk and chamomile). Overall, the bioactive compounds identified in this review, play essential roles in the synthesis and regulation of important neurotransmitters involved in the sleep-wake cycle. There is also significant potential for their inclusion in a number of functional beverages as the main ingredient on their own or in combination. Future studies should consider dosage; interactions with the beverage matrix, medications and other nutraceuticals; bioavailability during storage and following ingestion; as well as the sensory profile of the developed beverages, among others, when determining their effectiveness in a functional beverage to improve sleep quality.
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28
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Uzunova G, Pallanti S, Hollander E. Presentation and management of anxiety in individuals with acute symptomatic or asymptomatic COVID-19 infection, and in the post-COVID-19 recovery phase. Int J Psychiatry Clin Pract 2021; 25:115-131. [PMID: 33635172 DOI: 10.1080/13651501.2021.1887264] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
COVID-19 is associated with neuropsychiatric complications, the most frequent one being anxiety. Multiple biological and psychosocial factors contribute to anxiety in COVID-19. Among the biological factors, stress, genetics, gender, immune system, resilience, anosmia, hypogeusia, and central nervous system infection with SARS-CoV-2 are key. Anxiety is a complication of COVID-19 that may exacerbate the infection course, and the infection may exacerbate anxiety. We present the mechanisms of anxiety in symptomatic or asymptomatic COVID-19. We discuss the presentation of anxiety in patients without or with prior psychiatric illness, and with co-morbidities. Timely diagnosis and management of anxiety in COVID-19 patients is important. Given the frequent complication of COVID-19 with Acute Respiratory Distress Syndrome and Intensive Care Unit stay, anxiety may be a long-term complication. We review the diagnostic tools for anxiety in COVID-19, and summarise pharmacologic and non-pharmacologic treatments. We provide recommendations for diagnosis, treatment, prevention and follow up of anxiety in COVID-19.Key pointsPatients with COVID-19 (symptomatic or asymptomatic) exhibit a high frequency of neuropsychiatric complications with highest percentage attributed to anxiety.Multiple biological and psychosocial risk factors for anxiety exist in COVID-19-ill individuals. Biological risk factors include stress, resilience, genetics, gender, age, immune system, direct infection of the central nervous system (CNS) with SARS-CoV-2, comorbid psychiatric and general medical illnesses, ARDS and ICU stay. Anosmia and hypogeusia are COVID-19-specific anxiety risk factors. Knowledge of the anxiety risk factors is essential to focus on timely interventions, because anxiety may be a complication of and exacerbate the COVID-19 course.An inverse correlation exists between resilience and anxiety because of COVID-19, and therefore efforts should be made to increase resilience in COVID-19 patients.In COVID-19, important anxiety mechanism is neuroinflammation resulting from activation of the immune system and an ensuing cytokine storm.The general approach to management of anxiety in COVID-19 should be compassionate, similar to that during trauma or disaster, with efforts focussed on instilling a sense of hope and resilience.In selecting pharmacological treatment of anxiety, the stress response and immune system effects should be key. Medications with cardio-respiratory adverse effects should be avoided in patients with respiratory problems.Anxiety is a disorder that will require for long-term follow up at least one month after COVID-19.
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Affiliation(s)
- Genoveva Uzunova
- Psychiatric Research Institute at Montefiore-Einstein, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Stefano Pallanti
- Istituto di Neuroscienze, Firenze, Italy.,Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Eric Hollander
- Autism and Obsessive Compulsive Spectrum Program, Department of Psychiatry and Behavioral Sciences, Psychiatric Research Institute at Montefiore-Einstein, Albert Einstein College of Medicine, Bronx, NY, USA
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29
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Hinojosa-Nogueira D, Pérez-Burillo S, Pastoriza de la Cueva S, Rufián-Henares JÁ. Green and white teas as health-promoting foods. Food Funct 2021; 12:3799-3819. [PMID: 33977999 DOI: 10.1039/d1fo00261a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Tea is one of the most consumed beverages around the world and as such, it is constantly the object of novel research. This review focuses on the research performed during the last five years to provide an updated view of the current position of tea regarding human health. According to most authors, tea health benefits can be traced back to its bioactive components, mostly phenolic compounds. Among them, catechins are the most abundant. Tea has an important antioxidant capacity and anti-inflammatory properties, which make this beverage (or its extracts) a potential aid in the fight against several chronic diseases. On the other hand, some studies report the possibility of toxic effects and it is advisable to reduce tea consumption, such as in the last trimester of pregnancy. Additionally, new technologies are increasing researchers' possibilities to study the effect of tea on human gut microbiota and even against SARS CoV-2. This beverage favours some beneficial gut microbes, which could have important repercussions due to the influence of gut microbiota on human health.
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Affiliation(s)
- Daniel Hinojosa-Nogueira
- Departamento de Nutrición y Bromatología, Instituo de Nutrición Y Tecnología de los Alimentos, Centro de Investigación BIomédica, Universidad de Granada, Granada, Spain.
| | - Sergio Pérez-Burillo
- Departamento de Nutrición y Bromatología, Instituo de Nutrición Y Tecnología de los Alimentos, Centro de Investigación BIomédica, Universidad de Granada, Granada, Spain. and Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Silvia Pastoriza de la Cueva
- Departamento de Nutrición y Bromatología, Instituo de Nutrición Y Tecnología de los Alimentos, Centro de Investigación BIomédica, Universidad de Granada, Granada, Spain.
| | - José Ángel Rufián-Henares
- Departamento de Nutrición y Bromatología, Instituo de Nutrición Y Tecnología de los Alimentos, Centro de Investigación BIomédica, Universidad de Granada, Granada, Spain. and Instituto de Investigación Biosanitaria ibs.GRANADA, Universidad de Granada, Granada, Spain
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30
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Yang T, Liu S, Liu H, Long M, Chen P, Zhang X, Xu M, Rao Z. Semi-quantitative activity assays for high-throughput screening of higher activity gamma glutamyl transferase and enzyme immobilization to efficiently synthesize L-theanine. J Biotechnol 2021; 330:9-16. [PMID: 33636215 DOI: 10.1016/j.jbiotec.2021.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/25/2020] [Accepted: 02/18/2021] [Indexed: 11/17/2022]
Abstract
The bio-production of theanine is currently of significant interest due to its wide applications in food and healthcare products. Gamma glutamyl transferase (GGT) has been widely applied in L-theanine synthesis, but L-theanine yields remain prohibitively low for commercial production. In this study, a robust high-throughput screening process for isolating GGT mutants was developed through a combination of error-prone PCR techniques and a colorimetric reaction. The co-expression of PrsA lipoprotein enhances the secretion of GGT, thus GGT could be obtained quickly and easily without crushing cells. Random mutations on ggt genes were introduced by using error-prone PCR kits to build a large mutant library. A colorless compound generated by the reaction between NH4+ (released from L-theanine synthesis) and OPA was measured quantitatively by UV/visible spectroscopy when mixed with TCA and DMSO. Approximately 30 positive clones with improved color formation on the 96-well plates were identified, and mutants T413P and T463S with more than by 30 % higher transpeptidation activity versus the original GGT were isolated. To improve the operational stability and economical use, mutant GGT was immobilized on a prepared oxidized cellulose nanofiber membrane. The remaining activity of immobilized GGT was 88 % versus 72 % of free enzyme over 15 h. A fed-batch conversion was performed with the immobilized GGT, and over 70 g/L L-theanine could be accumulated within 18 h after feeding twice. Versus other studies, this is one of the best L-theanine synthesis systems using immobilized GGT.
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Affiliation(s)
- Taowei Yang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China.
| | - Shuanying Liu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China
| | - Huiling Liu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China
| | - Mengfei Long
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China
| | - Pengcheng Chen
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China
| | - Xian Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China
| | - Meijuan Xu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China
| | - Zhiming Rao
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu Province 214122, China.
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31
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Subjective Effects of Inhaling Kuromoji Tea Aroma. Molecules 2021; 26:molecules26030575. [PMID: 33499197 PMCID: PMC7866097 DOI: 10.3390/molecules26030575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/31/2020] [Accepted: 01/18/2021] [Indexed: 11/17/2022] Open
Abstract
Teas and various herbal teas are well-known beverages and are commonly consumed around the world. In this study, we focused on kuromoji tea. Kuromoji is a deciduous shrub of the Lauraceae family, and the plucked leaves and branches have been drunk as a tea in production areas for a long time. However, no studies have investigated the subjective and physiological effects of kuromoji tea. In this study, the effects of kuromoji tea were examined on the basis of the measurements of heart rate variability and cerebral blood flow, core body temperature and subjective assessments. Moreover, the results of this study showed that a pleasant subjective feeling could be obtained by sniffing the aroma of kuromoji teas, especially tea leaves. It was also found that the aroma of kuromoji teas has the potential to stimulate saliva secretion and increase subjective and physiological excitements in the oral cavity. 1,8-Cineole, linalool, terpinen-4-ol, carvone and geraniol were determined in both kuromoji leaves and branches. In this study, the beneficial effects of kuromoji teas when drunk conventionally were investigated.
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32
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Samanta S. Potential Bioactive Components and Health Promotional Benefits of Tea (Camellia sinensis). J Am Coll Nutr 2020; 41:65-93. [DOI: 10.1080/07315724.2020.1827082] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Saptadip Samanta
- Department of Physiology, Midnapore College, Midnapore, West Bengal, India
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Williams J, D’Cunha NM, Anstice N, McKune A, Naumovski N. Effect of Green Tea Amino Acid L-Theanine on Physiological Responses: A Protocol for Clinical Trial. EXPLORATORY RESEARCH AND HYPOTHESIS IN MEDICINE 2020; 000:1-8. [DOI: 10.14218/erhm.2020.00048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Borgonetti V, Governa P, Biagi M, Galeotti N. Novel Therapeutic Approach for the Management of Mood Disorders: In Vivo and In Vitro Effect of a Combination of L-Theanine, Melissa officinalis L. and Magnolia officinalis Rehder & E.H. Wilson. Nutrients 2020; 12:nu12061803. [PMID: 32560413 PMCID: PMC7353338 DOI: 10.3390/nu12061803] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/19/2020] [Accepted: 06/16/2020] [Indexed: 12/14/2022] Open
Abstract
Mood disorders represent one of the most prevalent and costly psychiatric diseases worldwide. The current therapies are generally characterized by several well-known side effects which limit their prolonged use. The use of herbal medicine for the management of several psychiatric conditions is becoming more established, as it is considered a safer support to conventional pharmacotherapy. The aim of this study was to investigate the possible anxiolytic and antidepressant activity of a fixed combination of L-theanine, Magnolia officinalis, and Melissa officinalis (TMM) in an attempt to evaluate how the multiple modulations of different physiological systems may contribute to reducing mood disorders. TMM showed an anxiolytic-like and antidepressant-like activity in vivo, which was related to a neuroprotective effect in an in vitro model of excitotoxicity. The effect of TMM was not altered by the presence of flumazenil, thus suggesting a non-benzodiazepine-like mechanism of action. On the contrary, a significant reduction in the effect was observed in animals and neuronal cells co-treated with AM251, a cannabinoid receptor type 1 (CB1) antagonist, suggesting that the endocannabinoid system may be involved in the TMM mechanism of action. In conclusion, TMM may represent a useful and safe candidate for the management of mood disorders with an innovative mechanism of action, particularly as an adjuvant to conventional therapies.
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Affiliation(s)
- Vittoria Borgonetti
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Section of Pharmacology, University of Florence, Viale G. Pieraccini 6, 50139 Florence, Italy;
| | - Paolo Governa
- Department of Biotechnology, Chemistry and Pharmacy-Department of Excellence 2018-2022, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy;
| | - Marco Biagi
- Department of Physical Sciences, Earth and Environment, University of Siena, Strada Laterina 8, 53100 Siena, Italy;
| | - Nicoletta Galeotti
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Section of Pharmacology, University of Florence, Viale G. Pieraccini 6, 50139 Florence, Italy;
- Correspondence: ; Tel.: +39-055-275-8391
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35
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Williams J, McKune AJ, Georgousopoulou EN, Kellett J, D’Cunha NM, Sergi D, Mellor D, Naumovski N. The Effect of L-Theanine Incorporated in a Functional Food Product (Mango Sorbet) on Physiological Responses in Healthy Males: A Pilot Randomised Controlled Trial. Foods 2020; 9:foods9030371. [PMID: 32210015 PMCID: PMC7142516 DOI: 10.3390/foods9030371] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/18/2020] [Accepted: 03/18/2020] [Indexed: 12/21/2022] Open
Abstract
Consumption of L-Theanine (L-THE) has been associated with a sensation of relaxation, as well as a reduction of stress. However, these physiological responses have yet to be elucidated in humans where L-THE is compared alongside food or as a functional ingredient within the food matrix. The aim of this study was to determine the physiological responses of a single intake of a potential functional food product (mango sorbet) containing L-THE (ms-L-THE; 200 mgw/w) in comparison to a flavour and colour-matched placebo (ms). Eighteen healthy male participants were recruited in this randomised, double-blind, placebo-controlled trial. The participants were required to consume ms-L-THE or placebo and their blood pressure (BP) (systolic and diastolic), heart rate (HR), and heart rate variability (HRV) were monitored continuously over 90 minutes. Eleven males (age 27.7 ± 10.8 years) completed the study. Changes in area under the curve for systolic and diastolic blood pressure and HRV over the 90 minute observation period indicated no differences between the three conditions (all p > 0.05) or within individual groups (all p > 0.05). The values for heart rate were also not different in the placebo group (p = 0.996) and treatment group (p = 0.066), while there was a difference seen at the baseline (p = 0.003). Based on the findings of this study, L-THE incorporated in a food matrix (mango sorbet) demonstrated no reduction in BP or HR and showed no significant parasympathetic interaction as determined by HRV high-frequency band and low-frequency/high-frequency ratio. Further studies should be focussed towards the comparison of pure L-THE and incorporation within the food matrix to warrant recommendations of L-THE alongside food consumption.
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Affiliation(s)
- Jackson Williams
- Faculty of Health, University of Canberra, Canberra, ACT 2601, Australia; (J.W.); (A.J.M.); (J.K.); (N.M.D.)
| | - Andrew J. McKune
- Faculty of Health, University of Canberra, Canberra, ACT 2601, Australia; (J.W.); (A.J.M.); (J.K.); (N.M.D.)
- Discipline of Biokinetics, Exercise and Leisure Sciences, School of Health Sciences, University of KwaZulu-Natal, Durban, KwaZulu-Natal 4000, South Africa
- Research Institute of Sport and Exercise, University of Canberra, Canberra, ACT 2605, Australia
| | - Ekavi N. Georgousopoulou
- Centre for Health and Medical Research, ACT Health Directorate, Canberra, ACT 2601, Australia;
- Medical School, Australian National University, Canberra, ACT 2601, Australia
- School of Medicine, University of Notre Dame Australia, Sydney, NSW 2000, Australia
| | - Jane Kellett
- Faculty of Health, University of Canberra, Canberra, ACT 2601, Australia; (J.W.); (A.J.M.); (J.K.); (N.M.D.)
| | - Nathan M. D’Cunha
- Faculty of Health, University of Canberra, Canberra, ACT 2601, Australia; (J.W.); (A.J.M.); (J.K.); (N.M.D.)
| | - Domenico Sergi
- Nutrition & Health Substantiation Group, Nutrition and Health Program, Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Adelaide, SA 5000, Australia;
| | - Duane Mellor
- Aston Medical School, Aston University, Birmingham B47ET, UK;
| | - Nenad Naumovski
- Faculty of Health, University of Canberra, Canberra, ACT 2601, Australia; (J.W.); (A.J.M.); (J.K.); (N.M.D.)
- Correspondence:
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