The effect of black tea on risk factors of cardiovascular disease in a normal population

Bahorun, Theeshan; Luximon-Ramma, Amitabye; Neergheen-Bhujun, Vidushi S.; Gunness, Teeluck K.; Googoolye, Kreshna; Auger, Cyril; Crozier, Alan; Aruoma, Okezie I.

doi:10.1016/j.ypmed.2011.12.009

Cited by 73 publications

(69 citation statements)

References 18 publications

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“…Similar results were observed in some12, 31 but not all previous studies 30, 32. Total/HDL cholesterol reflects the balance between the cholesterol carried by atherogenic and protective lipoproteins 33.…”

Section: Discussionsupporting

confidence: 87%

“…However, findings on the potential effects of tea on high‐density lipoprotein cholesterol (HDL‐C) are mixed. Some clinical trials reported a significant increase,10, 11, 12, 13 whereas other trials reported null effects14 on HDL‐C concentrations. Of note, no clinical trials examined the potential dose‐response effect of tea and were limited by the small sample sizes (10 to ≈200) and short intervention period (3 weeks to 3 months).…”

Section: Introductionmentioning

confidence: 99%

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Tea Consumption and Longitudinal Change in High‐Density Lipoprotein Cholesterol Concentration in Chinese Adults

Huang

et al. 2018

JAHA

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BackgroundThe relation between tea consumption and age‐related changes in high‐density lipoprotein cholesterol (HDL‐C) concentrations remains unclear, and longitudinal human data are limited. The aim of current study was to examine the relation between tea intake and longitudinal change in HDL‐C concentrations.Methods and ResultsBaseline (2006) tea consumption was assessed via a questionnaire, and plasma HDL‐C concentrations were measured in 2006, 2008, 2010, and 2012 among 80 182 individuals (49±12 years of age) who did not have cardiovascular diseases or cancer, or did not use cholesterol‐lowering agents both at baseline (2006) and during the follow‐up period (2006–2012). The associations between baseline tea consumption and rate of change in HDL‐C concentrations were examined using generalized estimating equation models. Tea consumption was inversely associated with a decreased rate of HDL‐C concentrations (P‐trend <0.0001) in the fully adjusted model. The adjusted mean difference in the HDL‐C decreased rate was 0.010 (95% confidence interval, 0.008, 0.012) mmol/L per year for tea consumers versus nonconsumers (never or less than once/month group). Interactions between tea consumption and age, sex, lifestyle scores, and metabolic syndrome (all P‐interaction <0.0001) were identified. The associations between greater tea consumption and slower decrease in HDL‐C concentrations were more pronounced in men, individuals aged 60 or older, individuals with a lower lifestyle score, and individuals with metabolic syndrome (all P‐trend <0.0001).ConclusionsTea consumption was associated with slower age‐related decreases in HDL‐C concentrations during 6 years of follow‐up.Clinical Trial Registration URL: http://www.chictr.org. Unique identifier: ChiCTR‐TNRC‐11001489.

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Tea Consumption and Longitudinal Change in High‐Density Lipoprotein Cholesterol Concentration in Chinese Adults

Huang

et al. 2018

JAHA

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“…Moderate intake of black tea improves the levels of independent risk factors of cardiovascular disease and antioxidant defenses in plasma. 6 The present study was aimed to assess the protective role of BTE on indomethacin induced alteration of testicular pathogenesis in albino rats.…”

Section: Introductionmentioning

confidence: 99%

Black tea extract ameliorates indomethacin induced changes in testicular histopathology of albino rats

Bagoji¹,

Doshi²,

Yendigeri³

et al. 2014

J. Young Pharm.

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Context:Reactive oxygen species and lipid peroxidation play a role in the pathogenesis induced by the non-steroidal antiinflammatory drug indomethacin. Aims: This study was aimed to assess the simultaneous effect of black tea extract (BTE) on indomethacin induced alteration in testicular pathology. Materials and Methods: Adult rats were divided into four groups (n = 6/group); Group I (control); Group II (indomethacin, 5 mg/kg b.wt.; i.p.); Group III (BTE, 2.5 g tea leaf/dL of water, i.e., 2.5% of aqueous BTE, orally) and Group IV (indomethacin + BTE). Serum vitamin E, sperm count, motility, and histopathology of testes were evaluated. Statistical Analysis: Statistical comparisons were performed using the one-way ANOVA, followed by post-hoc t-test. Results: Indomethacin induced rats showed a significant decrease in testicular weight, sperm count, sperm motility, and serum vitamin E concentrations. Histopathology of the testes revealed tortuous seminiferous tubules, loss of spermatogenesis process, marked decrease in the number of interstitial cells of Leydig and been replaced by many foci of congestion, edema, necrosis, and interstitial fibrosis. Rats simultaneously treated with BTE and indomethacin showed improvement of testicular weight, sperm count, sperm motility, and serum vitamin E concentrations when compared to indomethacin alone treated rats. Similarly, histopathology of rats treated simultaneously with indomethacin and BTE showed near normal testicular architecture when compared to indomethacin alone treated rats. Conclusion: The result suggests that BTEs might have potential beneficial effect to combat against indomethacin induced testicular damage in rats.

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“…Tea consumption is associated with great benefits to health as it has been shown to have antioxidant properties [18][19] . Many people consume tea as replacement to other industrialized beverages that are considered harmful, due to the belief that tea is a healthier option.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the pH and titratable acidity of teas commercially available in Brazilian market

Lunkes

Hashizume

2014

RGO, Rev. Gaúch. Odontol.

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Objective Tea has been considered a healthy alternative to other industrialized beverages. The objective of this study was to assess the erosive potential of teas commercially available in Brazil by pH and titratable acidity measures. Methods Eighteen teas available in RESUMO ObjetivoAvaliar o potencial erosivo de chás comercialmente disponíveis no mercado brasileiro através da avaliação dos valores de pH e de titrabilidade ácida. MétodosForam selecionados dezoito chás disponíveis no mercado brasileiro (prontos para beber e para preparo em infusão), além de uma marca de erva-mate (Ilex paraguariensis). Cada produto foi avaliado quanto ao seu pH e titrabilidade ácida. A comparação entre os tipos de chá foi realizado pelo teste t de Student. ResultadosOs valores médios de pH dos chás prontos para beber variaram entre 2,88 e 4,03 enquanto que para os chás para preparo em infusão e erva mate os valores variaram entre 6,75 e 7,89. A diferença entre os dois grupos foi significativa (p < 0,05). Em relação à titrabilidade ácida os chás prontos para beber apresentaram valores médios variando entre 3,77 ml e 12,68 ml. Os chás para preparo em infusão (incluindo a erva mate) não foram avaliados quanto a titrabilidade ácida por terem apresentado valores de pH > 7,0. ConclusãoDentre os chás comercialmente disponíveis, os chás prontos para beber apresentam os menores valores de pH e os maiores valores para titrabilidade ácida comparados aos demais chás. Estes achados sugerem um potencial erosivo para este tipo de chá.Termos de indexação: Saúde bucal. Chá. Erosão dentária.

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The effect of black tea on risk factors of cardiovascular disease in a normal population

Cited by 73 publications

References 18 publications

Tea Consumption and Longitudinal Change in High‐Density Lipoprotein Cholesterol Concentration in Chinese Adults

Tea Consumption and Longitudinal Change in High‐Density Lipoprotein Cholesterol Concentration in Chinese Adults

Black tea extract ameliorates indomethacin induced changes in testicular histopathology of albino rats

Evaluation of the pH and titratable acidity of teas commercially available in Brazilian market

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