Unravelling the anti-inflammatory and antioxidant effects of standardized green and black caffeinated coffee, tea, and their mixtures in an obese male rat model: Insights from biochemical, metabolomic, and histopathological analyses

El-Kersh, Dina M.; Kotob, Soheir E.; Ammar, Naglaa M.; Mohawed, Ola A.M.; Ahmed, Hanaa H.; Farag, Mohamed A.

doi:10.1016/j.fct.2023.113971

Cited by 4 publications

(1 citation statement)

References 91 publications

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“…Accordingly, GCBE was remarkable in its anti-inflammatory effect, inhibiting inflammatory mediators and proinflammatory cytokines. The anti-inflammatory efficacy shown in the present study agreed with a previous study of GCBE in rats [39] and of the extracts from coffee leaves and coffee pulp in RAW264.7 cells [19]. These reactions are attributed to the phenolic content in GCBE and coffee extracts, including CGA, CA, and CE [21].…”

Section: Discussionsupporting

confidence: 92%

A Promising Functional Food for Diabetes Prevention, Antioxidation, and Anti-inflammation of Green Coffee Bean Extract

Duangjai,

Rawangkan,

Siriphap

et al. 2024

J. Hum. Earth Future

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Functional foods and nutrition have become increasingly popular in preventing and reducing the incidence of diabetes. Green coffee bean extract (GCBE) has received much interest because of the evidence that coffee consumption reduces the risk of diabetes and many inflammatory diseases. This study was designed to investigate the phytochemicals contained in GCBE and their antioxidant, anti-diabetic, and anti-inflammatory efficacies. GCBE phytochemicals were analyzed using high-performance liquid chromatography (HPLC). This analysis demonstrated that chlorogenic acid was the predominant component of GCBE, followed by caffeine and caffeic acid. The antioxidant capacity of GCBE was assessed using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2’-azinobis 3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assays, demonstrating significant scavenging capacity with IC50 values of 2.96 ± 1.04 and 7.63 ± 1.03 µg/mL, respectively. The anti-hyperlipidemic efficacy of GCBE was observed through inhibiting cholesterol absorption (by increasing micelle sizes and decreasing cholesterol solubility), lipid digestion, and pancreatic lipase activity in vitro. The investigations revealed that GCBE possessed anti-hyperlipidemic properties by inhibiting cholesterol absorption, lipid digestion, and pancreatic lipase activity. Specifically, GCBE increased micelle particle sizes by ~6.5-fold, decreased cholesterol solubility by 2-fold, and reduced pancreatic lipase activity by 25%. Additionally, the in vitroanti-hyperglycemic activity of GCBE was evaluated by inhibition of α-amylase and α-glucosidase capacity. GCBE demonstrated anti-hyperglycemic activity by inhibiting α-amylase activity (32.80 ± 7.06% inhibition), while α-glucosidase activity remained unaffected. The anti-inflammatory potential of GCBE was evaluated by mRNA regulation using RT-PCR analysis. This analysis revealed that GCBE attenuated mRNA expression of COX-2, TNF-α, IL-1b, and IL-6 in LPS-induced RAW264.7 cells. GCBE’s antioxidant, anti-hyperlipidemic, and anti-hyperglycemic efficacies and its molecular mechanisms in modulating the inflammation pathway found in the present study highlight its potential as a supplement in functional foods or beverages. Doi: 10.28991/HEF-2024-05-01-08 Full Text: PDF

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Section: Discussionsupporting

confidence: 92%

A Promising Functional Food for Diabetes Prevention, Antioxidation, and Anti-inflammation of Green Coffee Bean Extract

Duangjai,

Rawangkan,

Siriphap

et al. 2024

J. Hum. Earth Future

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Decoding coffee cardiometabolic potential: Chemical composition, nutritional, and health relationships

Karagöz,

Koçyiğit,

Koçak

et al. 2024

Comp Rev Food Sci Food Safe

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Coffee is one of the most consumed beverages worldwide, recognized for its unique taste and aroma and for its social and health impacts. Coffee contains a plethora of nutritional and bioactive components, whose content can vary depending on their origin, processing, and extraction methods. Gathered evidence in literature shows that the regular coffee consumption containing functional compounds (e.g., polysaccharides, phenolic compounds, and melanoidins) can have potential beneficial effects on cardiometabolic risk factors such as abdominal adiposity, hyperglycemia, and lipogenesis. On the other hand, coffee compounds, such as caffeine, diterpenes, and advanced glycation end products, may be considered a risk for cardiometabolic health. The present comprehensive review provides up‐to‐date knowledge on the structure–function relationships between different chemical compounds present in coffee, one of the most prevalent beverages present in human diet, and cardiometabolic health.

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Effect of green coffee on miR-133a, miR-155 and inflammatory biomarkers in obese individuals

Khedr,

Zahran,

Ebeid

et al. 2024

Diabetol Metab Syndr

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Objectives Metabolic syndrome is a cluster of conditions that increases the risk of atherosclerotic cardiovascular diseases. The current study was a randomized, double blind, placebo-controlled study that aimed to determine the impact of green coffee (GC) in obese patients with metabolic syndrome through analysis of miRNA-155, miRNA-133a and the inflammatory biomarkers such as resistin, TNF-α, total sialic acid, homocysteine, high sensitivity C-reactive protein (hs-CRP), and the anti-inflammatory cytokine, adiponectin. Methods One hundred-sixty obese patients were randomly supplemented either with GC capsules (800 mg) or placebo daily for six months. Both groups were advised to take a balanced diet. Blood samples were collected at baseline and after six months of supplementation. Results GC supplementation for 6 months reduced BMI (p = 0.002), waist circumference (p = 0.038), blood glucose (p = 0.002), HbA1c% (p = 0.000), Insulin (p = 0.000), systolic blood pressure (p = 0.005), diastolic BP (p = 0.001) compared with placebo. GC significantly decreased total cholesterol (TC, p = 0.000), LDL-C (p = 0.001), triglycerides (TG, p = 0.002) and increased HDL-C (p = 0.008) compared with placebo group. In addition, GC significantly (p ≤ 0.005) reduced total sialic acid, homocysteine, resistin, TNF-α, hs-CRP and the oxidative stress marker malondialdehyde (MDA), but increased serum adiponectin (p = 0.000) compared to placebo group. There was a significant reduction in the gene expression of miR-133a (p = 0.000) in GC group as compared with baseline levels and with the control placebo group (p = 0.001) after 6 months. Conclusion GC administration modulated metabolic syndrome by decreasing BMI, high BP, blood glucose, dyslipidemia, miRNA-133a and inflammatory biomarkers that constitute risk factors for cardiovascular diseases. ClinicalTrials.gov registration No. is NCT05688917. Graphical Abstract

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Unravelling the anti-inflammatory and antioxidant effects of standardized green and black caffeinated coffee, tea, and their mixtures in an obese male rat model: Insights from biochemical, metabolomic, and histopathological analyses

Cited by 4 publications

References 91 publications

A Promising Functional Food for Diabetes Prevention, Antioxidation, and Anti-inflammation of Green Coffee Bean Extract

A Promising Functional Food for Diabetes Prevention, Antioxidation, and Anti-inflammation of Green Coffee Bean Extract

Decoding coffee cardiometabolic potential: Chemical composition, nutritional, and health relationships

Effect of green coffee on miR-133a, miR-155 and inflammatory biomarkers in obese individuals

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