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Nagarajan K, Kumarswamy K, Begum R, Panibatla V, Singarajipura A, Adepu R, Munjattu JF, Sellapan S, Arangba S, Goswami A, Swamickan R, Basha J, Dsouza PM, Muniyandi M. Self-driven solutions and resilience adapted by people with drug-resistant tuberculosis and their caregivers in Bengaluru and Hyderabad, India: a qualitative study. THE LANCET REGIONAL HEALTH. SOUTHEAST ASIA 2024; 22:100372. [PMID: 38420270 PMCID: PMC10900834 DOI: 10.1016/j.lansea.2024.100372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/08/2024] [Accepted: 02/06/2024] [Indexed: 03/02/2024]
Abstract
Background One-fifth of people with drug-resistance tuberculosis (DR-TB) who were initiated on newer shorter treatment regimen (with injection) had unfavourable treatment outcomes in India as on 2020. Evidence on self-driven solutions and resilience adapted by people with DR-TB (PwDR-TB) towards their multi-dimensional disease and treatment challenges are scarce globally, which we aimed to understand. Methods In this qualitative study using positive deviance framework, we conducted semi-structured in-depth interviews among consenting adult PwDR-TB (7 women, 13 men) who completed shorter treatment regimen (including injections) with maximum treatment adherence. The study was conducted in the southern districts of Bengaluru and Hyderabad, India between June 2020 and December 2022. Caregivers (14 women, 6 men) and health providers (8 men, 2 women) of PwDR-TB were also interviewed. Interviews were conducted in local language (Kannada, Tamil, Telugu, Urdu and Hindi) and inquired about practices, behaviours, experiences, perceptions and attributes which enabled maximum adherence and resilience of PwDR-TB. Interviews were audio recorded, transcribed, and translated to English and coded for thematic analysis using inductive approach. Findings Distinctive themes explanatory of the self-driven solutions and resilience exhibited by PwDR-TB and their caregivers were identified: (i) Self-adaptation towards the biological consequences of drugs, by personalised nutritional and adjuvant practices, which helped to improve drug ingestion and therapeutic effects. Also home remedies and self-plans for ameliorating injection pain. (ii) Perceptual adaptation towards drugs aversion and fatigue, by their mind diversion practices, routinisation and normalisation of drug intake process. and constant reinforcement and re-interpretation of bodily signs of disease recovery (iii) Family caregivers intense and participatory care for PwDR-TB, by aiding their essential life activities and ensuring survival, learning and fulfilling special nutritional needs and goal oriented actions to aid drug intake (iv) Health care providers care, marked by swift and timely risk mitigation of side-effects and crisis response (v) Acquired self-efficacy of PwDR-TB, by their decisive family concerns resulting in attitudinal change. Also being sensitised on the detrimental consequences of disease and being motivated through positive examples. Interpretation Synthesised findings on self-driven solutions and resilience towards the multi-dimensional DR-TB challenges provides opportunity for developing and testing new interventions for its effectiveness in DR-TB care settings globally. Designing and testing personalised cognitive interventions for PwDR-TB: to inculcate attitudinal change and self-efficacy towards medication, developing cognitive reinforcements to address the perception burden of treatment, skill building and mainstreaming the role of family caregivers as therapeutic partners of PwDR-TB, curating self-adaptive behaviours and practices of PwDR-TB to normalise their drug consumptions experiences could be the way forward in building resilience towards DR-TB. Funding United States Agency for International Development (USAID) through Karnataka Health Promotion Trust (KHPT), Bengaluru, India.
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Affiliation(s)
- Karikalan Nagarajan
- ICMR-National Institute for Research in Tuberculosis (NIRT), Chennai, Tamil Nadu, 600031, India
| | - Karthikeyan Kumarswamy
- Karnataka Health Promotion Trust, IT Park, Rajajinagar Industrial Area, Bengaluru, Karnataka, 560044, India
| | - Rehana Begum
- Karnataka Health Promotion Trust, IT Park, Rajajinagar Industrial Area, Bengaluru, Karnataka, 560044, India
| | - Vikas Panibatla
- TB Alert India, Hyderabad, West Marredpally, Secunderabad, Telangana, 500026, India
| | - Anil Singarajipura
- State TB Office, 2nd Floor, Arogya Soudha, Magadi Road, Bengaluru, Karnataka, 560023, India
| | - Rajesham Adepu
- State TB Office, Directorate of Medical & Health Services, Hyderabad, Telangana, 500095, India
| | - Joseph Francis Munjattu
- Karnataka Health Promotion Trust, IT Park, Rajajinagar Industrial Area, Bengaluru, Karnataka, 560044, India
| | - Senthil Sellapan
- ICMR-National Institute for Research in Tuberculosis (NIRT), Chennai, Tamil Nadu, 600031, India
| | - Stephen Arangba
- ICMR-National Institute for Research in Tuberculosis (NIRT), Chennai, Tamil Nadu, 600031, India
| | | | | | - Javeed Basha
- ICMR-National Institute for Research in Tuberculosis (NIRT), Chennai, Tamil Nadu, 600031, India
| | - Pearl Maria Dsouza
- ICMR-National Institute for Research in Tuberculosis (NIRT), Chennai, Tamil Nadu, 600031, India
| | - Malaisamy Muniyandi
- ICMR-National Institute for Research in Tuberculosis (NIRT), Chennai, Tamil Nadu, 600031, India
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Richter E, Geetha T, Burnett D, Broderick TL, Babu JR. The Effects of Momordica charantia on Type 2 Diabetes Mellitus and Alzheimer's Disease. Int J Mol Sci 2023; 24:ijms24054643. [PMID: 36902074 PMCID: PMC10002567 DOI: 10.3390/ijms24054643] [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: 02/01/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
T2DM is a complex metabolic disorder characterized by hyperglycemia and glucose intolerance. It is recognized as one of the most common metabolic disorders and its prevalence continues to raise major concerns in healthcare globally. Alzheimer's disease (AD) is a gradual neurodegenerative brain disorder characterized by the chronic loss of cognitive and behavioral function. Recent research suggests a link between the two diseases. Considering the shared characteristics of both diseases, common therapeutic and preventive agents are effective. Certain bioactive compounds such as polyphenols, vitamins, and minerals found in vegetables and fruits can have antioxidant and anti-inflammatory effects that allow for preventative or potential treatment options for T2DM and AD. Recently, it has been estimated that up to one-third of patients with diabetes use some form of complementary and alternative medicine. Increasing evidence from cell or animal models suggests that bioactive compounds may have a direct effect on reducing hyperglycemia, amplifying insulin secretion, and blocking the formation of amyloid plaques. One plant that has received substantial recognition for its numerous bioactive properties is Momordica charantia (M. charantia), otherwise known as bitter melon, bitter gourd, karela, and balsam pear. M. charantia is utilized for its glucose-lowering effects and is often used as a treatment for diabetes and related metabolic conditions amongst the indigenous populations of Asia, South America, India, and East Africa. Several pre-clinical studies have documented the beneficial effects of M. charantia through various postulated mechanisms. Throughout this review, the underlying molecular mechanisms of the bioactive components of M. charantia will be highlighted. More studies will be necessary to establish the clinical efficacy of the bioactive compounds within M. charantia to effectively determine its pertinence in the treatment of metabolic disorders and neurodegenerative diseases, such as T2DM and AD.
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Affiliation(s)
- Erika Richter
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA
| | - Thangiah Geetha
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA
- Boshell Metabolic Diseases and Diabetes Program, Auburn University, Auburn, AL 36849, USA
| | - Donna Burnett
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA
- Boshell Metabolic Diseases and Diabetes Program, Auburn University, Auburn, AL 36849, USA
| | - Tom L. Broderick
- Department of Physiology, Laboratory of Diabetes and Exercise Metabolism, College of Graduate Studies, Midwestern University, Glendale, AZ 85308, USA
| | - Jeganathan Ramesh Babu
- Department of Nutritional Sciences, Auburn University, Auburn, AL 36849, USA
- Boshell Metabolic Diseases and Diabetes Program, Auburn University, Auburn, AL 36849, USA
- Correspondence: ; Tel.: +1-223-844-3840
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Dutta S, Hazra P, Saha S, Acharya B, Bhattacharjee T, Maurya PK, Banerjee S, Chakraborty I, Chattopadhyay A. Applied mutagenesis could improve economically important traits in bitter gourd (Momordica charantia L.). J Genet 2021. [DOI: 10.1007/s12041-021-01283-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Perera WH, Shivanagoudra SR, Pérez JL, Kim DM, Sun Y, K. Jayaprakasha G, S. Patil B. Anti-Inflammatory, Antidiabetic Properties and In Silico Modeling of Cucurbitane-Type Triterpene Glycosides from Fruits of an Indian Cultivar of Momordica charantia L. Molecules 2021; 26:molecules26041038. [PMID: 33669312 PMCID: PMC7920048 DOI: 10.3390/molecules26041038] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/04/2021] [Accepted: 02/12/2021] [Indexed: 02/08/2023] Open
Abstract
Diabetes mellitus is a chronic disease and one of the fastest-growing health challenges of the last decades. Studies have shown that chronic low-grade inflammation and activation of the innate immune system are intimately involved in type 2 diabetes pathogenesis. Momordica charantia L. fruits are used in traditional medicine to manage diabetes. Herein, we report the purification of a new 23-O-β-d-allopyranosyl-5β,19-epoxycucurbitane-6,24-diene triterpene (charantoside XV, 6) along with 25ξ-isopropenylchole-5(6)-ene-3-O-β-d-glucopyranoside (1), karaviloside VI (2), karaviloside VIII (3), momordicoside L (4), momordicoside A (5) and kuguaglycoside C (7) from an Indian cultivar of Momordica charantia. At 50 µM compounds, 2–6 differentially affected the expression of pro-inflammatory markers IL-6, TNF-α, and iNOS, and mitochondrial marker COX-2. Compounds tested for the inhibition of α-amylase and α-glucosidase enzymes at 0.87 mM and 1.33 mM, respectively. Compounds showed similar α-amylase inhibitory activity than acarbose (0.13 mM) of control (68.0–76.6%). Karaviloside VIII (56.5%) was the most active compound in the α-glucosidase assay, followed by karaviloside VI (40.3%), while momordicoside L (23.7%), A (33.5%), and charantoside XV (23.9%) were the least active compounds. To better understand the mode of binding of cucurbitane-triterpenes to these enzymes, in silico docking of the isolated compounds was evaluated with α-amylase and α-glucosidase.
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Affiliation(s)
- Wilmer H. Perera
- Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University, 1500 Research Parkway, Suite A120, College Station, TX 77843, USA; (W.H.P.); (S.R.S.); (J.L.P.); (G.K.J.)
| | - Siddanagouda R. Shivanagoudra
- Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University, 1500 Research Parkway, Suite A120, College Station, TX 77843, USA; (W.H.P.); (S.R.S.); (J.L.P.); (G.K.J.)
| | - Jose L. Pérez
- Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University, 1500 Research Parkway, Suite A120, College Station, TX 77843, USA; (W.H.P.); (S.R.S.); (J.L.P.); (G.K.J.)
| | - Da Mi Kim
- Department of Nutrition, Texas A&M University, College Station, TX 77843, USA; (D.M.K.); (Y.S.)
| | - Yuxiang Sun
- Department of Nutrition, Texas A&M University, College Station, TX 77843, USA; (D.M.K.); (Y.S.)
| | - Guddadarangavvanahally K. Jayaprakasha
- Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University, 1500 Research Parkway, Suite A120, College Station, TX 77843, USA; (W.H.P.); (S.R.S.); (J.L.P.); (G.K.J.)
| | - Bhimanagouda S. Patil
- Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University, 1500 Research Parkway, Suite A120, College Station, TX 77843, USA; (W.H.P.); (S.R.S.); (J.L.P.); (G.K.J.)
- Correspondence: ; Tel.: +1-979-458-890; Fax: +1-979-862-4522
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Encapsulation of Momordica Charantia Linn. (bitter gourd) juice by spray dying technique. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-020-00599-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Inhibitory effects of safflower and bitter melon extracts on biogenic amine formation by fish spoilage bacteria and food borne pathogens. FOOD BIOSCI 2019. [DOI: 10.1016/j.fbio.2019.100478] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Saeed F, Afzaal M, Niaz B, Arshad MU, Tufail T, Hussain MB, Javed A. Bitter melon (Momordica charantia): a natural healthy vegetable. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2018.1446023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Farhan Saeed
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Afzaal
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Bushra Niaz
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Umair Arshad
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Tabussam Tufail
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Bilal Hussain
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ahsan Javed
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
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Đorđević Đ, Buchtová H, Macharáčková B. Salt microspheres and potassium chloride usage for sodium reduction: Case study with sushi. FOOD SCI TECHNOL INT 2017; 24:3-14. [DOI: 10.1177/1082013217718965] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Đani Đorđević
- Department of Meat Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Hana Buchtová
- Department of Meat Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Blanka Macharáčková
- Department of Gastronomy, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
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Akanji OC, Cyril Olutayo CM, Elufioye OT, Ogunsusi OO. The antimalaria effect of Momordica charantia L. and Mirabilis jalapa leaf extracts using animal model. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/jmpr2016.6046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Increasing vegetable intakes: rationale and systematic review of published interventions. Eur J Nutr 2016; 55:869-96. [PMID: 26754302 PMCID: PMC4819941 DOI: 10.1007/s00394-015-1130-8] [Citation(s) in RCA: 152] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 12/06/2015] [Indexed: 02/07/2023]
Abstract
Purpose
While the health benefits of a high fruit and vegetable consumption are well known and considerable work has attempted to improve intakes, increasing evidence also recognises a distinction between fruit and vegetables, both in their impacts on health and in consumption patterns. Increasing work suggests health benefits from a high consumption specifically of vegetables, yet intakes remain low, and barriers to increasing intakes are prevalent making intervention difficult. A systematic review was undertaken to identify from the published literature all studies reporting an intervention to increase intakes of vegetables as a distinct food group. Methods Databases—PubMed, PsychInfo and Medline—were searched over all years of records until April 2015 using pre-specified terms. Results Our searches identified 77 studies, detailing 140 interventions, of which 133 (81 %) interventions were conducted in children. Interventions aimed to use or change hedonic factors, such as taste, liking and familiarity (n = 72), use or change environmental factors (n = 39), use or change cognitive factors (n = 19), or a combination of strategies (n = 10). Increased vegetable acceptance, selection and/or consumption were reported to some degree in 116 (83 %) interventions, but the majority of effects seem small and inconsistent. Conclusions Greater percent success is currently found from environmental, educational and multi-component interventions, but publication bias is likely, and long-term effects and cost-effectiveness are rarely considered. A focus on long-term benefits and sustained behaviour change is required. Certain population groups are also noticeably absent from the current list of tried interventions.
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Devi TB, Ahmaruzzaman M, Begum S. A rapid, facile and green synthesis of Ag@AgCl nanoparticles for the effective reduction of 2,4-dinitrophenyl hydrazine. NEW J CHEM 2016. [DOI: 10.1039/c5nj02367j] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we have developed a green and single-step process for the fabrication of Ag@AgCl nanoparticles (NPs) using the leaf extract ofMomordica charantia.
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Tan SP, Kha TC, Parks SE, Roach PD. Bitter melon (Momordica charantiaL.) bioactive composition and health benefits: A review. FOOD REVIEWS INTERNATIONAL 2015. [DOI: 10.1080/87559129.2015.1057843] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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An investigation into the consumption patterns, attitude, and perception of Mauritians towards common medicinal food plants. J Herb Med 2015. [DOI: 10.1016/j.hermed.2015.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Snee LS, Nerurkar VR, Dooley DA, Efird JT, Shovic AC, Nerurkar PV. Erratum to: strategies to improve palatability and increase consumption intentions for Momordica charantia(bitter melon): a vegetable commonly used for diabetes management. Nutr J 2014. [PMCID: PMC3933351 DOI: 10.1186/1475-2891-13-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Potential for improved glycemic control with dietary Momordica charantia in patients with insulin resistance and pre-diabetes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2014; 11:2328-45. [PMID: 24566057 PMCID: PMC3945602 DOI: 10.3390/ijerph110202328] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/02/2014] [Accepted: 02/10/2014] [Indexed: 01/10/2023]
Abstract
Bitter Melon (Momordica charantia) is a widely used traditional remedy for hyperglycemia. While the medicinal properties of this plant have been studied extensively using in vitro and animal models, the clinical efficacy and safety in humans is largely unknown. This review discusses the benefits and limitations of bitter melon supplementation in the context of epidemic levels of insulin resistance and pre-diabetes throughout the world.
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Yu Y, Zhang XH, Ebersole B, Ribnicky D, Wang ZQ. Bitter melon extract attenuating hepatic steatosis may be mediated by FGF21 and AMPK/Sirt1 signaling in mice. Sci Rep 2013; 3:3142. [PMID: 24189525 PMCID: PMC3912441 DOI: 10.1038/srep03142] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 10/21/2013] [Indexed: 11/13/2022] Open
Abstract
We sought to evaluate the effects of Momordica charantia (bitter melon, BM) extract on insulin sensitivity, NAFLD, hepatic FGF21 and AMPK signaling in mice fed a high-fat diet. Male C57/B6 mice were randomly divided into HFD and HFD supplementation with BM for 12 week. Body weight, plasma glucose, FGF21 and insulin levels, hepatic FGF21 and AMPK signaling proteins were measured. The results showed that plasma FGF21 and insulin concentrations were significantly decreased and hepatic FGF21 content was significantly down-regulated, while FGF receptors 1, 3 and 4 (FGFR1, FGFR3 and FGFR4) were greatly up-regulated in BM group compared to the HFD group (P < 0.05 and P < 0.01). BM also significantly increased hepatic AMPK p, AMPK α1 AMPK α2 and Sirt1 content compared to the HFD mice. We, for the first time, demonstrated that BM extract attenuated hepatic steatosis in mice by enhancing hepatic FGF21 and AMPK/Sirt1 signaling.
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Affiliation(s)
- Yongmei Yu
- Nutrition and Diabetes Research Laboratory, Pennington Biomedical Research Center, LSU System. Baton Rouge, LA 70808
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Antidiabetic effects of Momordica charantia (bitter melon) and its medicinal potency. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2013. [DOI: 10.1016/s2222-1808(13)60052-3] [Citation(s) in RCA: 196] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Regulation of glucose metabolism via hepatic forkhead transcription factor 1 (FoxO1) by Morinda citrifolia (noni) in high-fat diet-induced obese mice. Br J Nutr 2011; 108:218-228. [PMID: 22011624 DOI: 10.1017/s0007114511005563] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Renewed interest in alternative medicine among diabetic individuals prompted us to investigate anti-diabetic effects of Morinda citrifolia (noni) in high-fat diet (HFD)-fed mice. Type 2 diabetes is associated with increased glucose production due to the inability of insulin to suppress hepatic gluconeogenesis and promote glycolysis. Insulin inhibits gluconeogenesis by modulating transcription factors such as forkhead box O (FoxO1). Based on microarray analysis data, we tested the hypothesis that fermented noni fruit juice (fNJ) improves glucose metabolism via FoxO1 phosphorylation. C57BL/6 male mice were fed a HFD and fNJ for 12 weeks. Body weights and food intake were monitored daily. FoxO1 expression was analysed by real-time PCR and Western blotting. Specificity of fNJ-associated FoxO1 regulation of gluconeogenesis was confirmed by small interfering RNA (siRNA) studies using human hepatoma cells, HepG2. Supplementation with fNJ inhibited weight gain and improved glucose and insulin tolerance and fasting glucose in HFD-fed mice. Hypoglycaemic properties of fNJ were associated with the inhibition of hepatic FoxO1 mRNA expression, with a concomitant increase in FoxO1 phosphorylation and nuclear expulsion of the proteins. Gluconeogenic genes, phosphoenolpyruvate C kinase (PEPCK) and glucose-6-phosphatase (G6P), were significantly inhibited in mice fed a HFD+fNJ. HepG2 cells demonstrated more than 80 % inhibition of PEPCK and G6P mRNA expression in cells treated with FoxO1 siRNA and fNJ. These data suggest that fNJ improves glucose metabolism via FoxO1 regulation in HFD-fed mice.
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