Background: Extracts from the bark of Hintonia latiflora are used as dietetic measures to support the regulation of glucose metabolism and the stabilization of blood glucose values.
Methods: A dry concentrated extract from the bark of Hintonia latiflora in capsule form was tested in an open, prospective clinical study in 41 dietetically stabilized subjects with type 2 diabetes. The effects on parameters of blood glucose control were documented over a period of six months.
Results: Fasting and postprandial glucose and the HbA1c value declined significantly. In the case of HbA1c, this meant a reduction of the absolute value from 7.49 ± 0.72% to 6.82 ± 0.67% (from 58.4 to 51.0 mmol/mol Hb; intention to treat (ITT) population). Furthermore, cholesterol and triglycerides were slightly reduced and no negative effect on other laboratory parameters and no change of the liver values were observed. Tolerance was very good. In particular, no side effects and no hypoglycemic episodes or worsening of diabetic symptoms occurred.
Conclusions: The study confirms the positive effect of extracts from the bark of Hintonia latiflora on blood glucose values suggesting a potential benefit in the management of glucose metabolism in cases of type 2 diabetes.
Trial Registration: Reg.-No. ISRCTN83308122.
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http://dx.doi.org/10.1186/2047-783X-19-16 | DOI Listing |
Front Pharmacol
June 2018
Laboratorio de Fisiología Molecular, Instituto de Biología, Jardín Botánico, Universidad Nacional Autónoma de México, Mexico City, Mexico.
The copalchi complex, , and , is widely used in Mexico for treating diabetes and gastrointestinal disorders. The first therapeutic use for bark was registered in the "Florentine Codex" in the sixteenth century. The latest pharmacological and phytochemical studies revealed that the infusion of the leaves have hypoglycemic, antihyperglycemic and gastroprotective activities.
View Article and Find Full Text PDFHistol Histopathol
December 2018
Department of Microbiology and Parasitology, School of Medicine, National Autonomous University of Mexico, Mexico.
The indiscriminate use of herbal products is increasingly growing worldwide; nonetheless consumers are not warned about the potential health risks that these products may cause. Hintonia latiflora (Hl) is a tree native to the American continent belonging to the Rubiaceae family and its stem bark is empirically used mainly to treat diabetes and malaria; supplements containing Hl are sold in America and Europe without medical prescription, thus scientific information regarding its toxicity as a consequence of a regular consumption is needed. In the present study, the histopathological effect of 200 and 1000 mg/kg of HI methanolic stem bark extract (HlMeOHe) was evaluated in the small bowel, liver, pancreas, kidneys and brain of CD-1 male mice after oral sub-acute treatment for 28 days.
View Article and Find Full Text PDFJ Nat Prod
April 2015
†Facultad de Química, Universidad Nacional Autónoma de México, México DF 04510, Mexico.
Two new compounds, pestalotin 4'-O-methyl-β-mannopyranoside (1) and 3S,4R-(+)-4-hydroxymellein (2), were isolated from an organic extract of a Xylaria feejeensis, which was isolated as an endophytic fungus from Hintonia latiflora. In addition, the known compounds 3S,4S-(+)-4-hydroxymellein (3), 3S-(+)-8-methoxymellein (4), and the quinone derivatives 2-hydroxy-5-methoxy-3-methylcyclohexa-2,5-diene-1,4-dione (5), 4S,5S,6S-4-hydroxy-3-methoxy-5-methyl-5,6-epoxycyclohex-2-en-1-one (6), and 4R,5R-dihydroxy-3-methoxy-5-methylcyclohexen-2-en-1-one (7) were obtained. The structures of 1 and 2 were elucidated using a set of spectroscopic and spectrometric techniques.
View Article and Find Full Text PDFPhytomedicine
October 2014
Institute of Pharmacology and Toxicology of the Technical University Munich, Munich, Germany. Electronic address:
In the present study, it is shown for the first time that an extract of Hintonia latiflora (HLE) which is used as an antidiabetic herbal medicine, is not only able to decrease blood glucose concentration but additionally exerts a vasodilating effect. Accordingly, this extract might have a positive influence on diabetes-associated dysfunction of blood vessels. The vasodilating effect was demonstrated in vitro in aortic rings of guinea pigs as well as in vivo in rabbits.
View Article and Find Full Text PDFEur J Med Res
March 2014
Head of Diabetes Department, IDF President, Rc: 425201/734, Vel'komoravská 2, Trencin, SK 91101, Slovak Republic.
Background: Extracts from the bark of Hintonia latiflora are used as dietetic measures to support the regulation of glucose metabolism and the stabilization of blood glucose values.
Methods: A dry concentrated extract from the bark of Hintonia latiflora in capsule form was tested in an open, prospective clinical study in 41 dietetically stabilized subjects with type 2 diabetes. The effects on parameters of blood glucose control were documented over a period of six months.
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