Intestinal Absorption

Publication Title: 
Phytotherapy research: PTR

Triphala is categorized as a rejuvenator and antioxidant-rich Ayurvedic herbal formulation and has traditionally been used in various gastric problems including intestinal inflammation. The aim of the present study was to examine the comparative enteroprotective effect of Triphala formulations against methotrexate-induced intestinal damage in rats. Triphala formulations were prepared by mixing equal (1:1:1) and unequal (1:2:4) proportions of Terminalia chebula Retz., Terminalia belerica (Gaertn.) Roxb. and Emblica officinalis Gaertn.

Author(s): 
Nariya, Mukeshkumar
Shukla, Vinay
Jain, Sunita
Ravishankar, Basavaiah
Publication Title: 
Alternative Therapies in Health and Medicine

CONTEXT: In India, vaidyas (Ayurvedic physicians) traditionally administer triphala and its constituents as therapeutic agents for promoting digestion and satiety. OBJECTIVE: The research team performed the present study to investigate the effects of triphala and its constituents (T bellirica [bibhitaki], T chebula [haritaki], and E officinalis [amalaki]) on the dietary induction of obesity (diet-induced obesity [DIO]), and other symptoms of visceral obesity syndrome, in mice fed a high-fat diet (HFD).

Author(s): 
Gurjar, Shaifali
Pal, Anuradha
Kapur, Suman
Publication Title: 
Journal of Clinical Gastroenterology

The idea that putrefaction of the stools causes disease, i.e., intestinal autointoxication, originated with physicians in ancient Egypt. They believed that a putrefactive principle associated with feces was absorbed in to the general circulation, where it acted to produce fever and pus. This description of the materia peccans represented the earliest forerunner of our present notion of endotoxin and its effect.

Author(s): 
Chen, T. S.
Chen, P. S.
Publication Title: 
Molecular Nutrition & Food Research

Vitamin E refers to a family of several compounds that possess a similar chemical structure comprising a chromanol ring with a 16-carbon side chain. The degree of saturation of the side chain, and positions and nature of methyl groups designate the compounds as tocopherols or tocotrienols. Vitamin E compounds have antioxidant properties due to a hydroxyl group on the chromanol ring. Recently, it has been suggested that vitamin E may also regulate signal transduction and gene expression.

Author(s): 
Banks, Ruth
Speakman, John R.
Selman, Colin
Publication Title: 
Current Opinion in Lipidology

Accumulating evidence suggests that oxidized fats and lipid oxidation products in the diet can contribute to the pathogenesis of atherosclerosis. The present review summarizes studies that show that oxidized fat and lipid oxidation products are present in human foods; that these compounds are absorbed by the intestine and appear in the blood circulation; and that these ingested substances can have deleterious cardiovascular effects in both humans and experimental animals.

Author(s): 
Cohn, Jeffrey S.
Publication Title: 
Nutrients

Recent studies have demonstrated that the intestine is a key target organ for overall health and longevity. Complementing these studies is the discovery of the trans-intestinal cholesterol efflux pathway and the emerging role of the intestine in reverse cholesterol transport. The surfacing dynamics of the regulation of cholesterol metabolism in the intestine provides an attractive platform for intestine-specific nutritional intervention strategies to lower blood cholesterol levels for protection against cardiovascular diseases.

Author(s): 
Wegner, Casey J.
Kim, Bohkyung
Lee, Jiyoung
Publication Title: 
Annual Review of Genetics

The digestive tract plays a central role in the digestion and absorption of nutrients. Far from being a passive tube, it provides the first line of defense against pathogens and maintains energy homeostasis by exchanging neuronal and endocrine signals with other organs. Historically neglected, the gut of the fruit fly Drosophila melanogaster has recently come to the forefront of Drosophila research.

Author(s): 
Lemaitre, Bruno
Miguel-Aliaga, Irene
Publication Title: 
Antimicrobial Agents and Chemotherapy

The influence of food intake on the pharmacokinetics of artemisinin was studied with six healthy Vietnamese male subjects. In a crossover study, artemisinin capsules (500 mg) were administered with and without food after an overnight fast. Plasma samples were obtained up to 24 h after intake of each drug. Measurement of artemisinin concentrations was performed by high-performance liquid chromatography with electrochemical detection.

Author(s): 
Dien, T. K.
de Vries, P. J.
Khanh, N. X.
Koopmans, R.
Binh, L. N.
Duc, D. D.
Kager, P. A.
van Boxtel, C. J.
Publication Title: 
Drug Metabolism and Disposition: The Biological Fate of Chemicals

The objective of this study was to investigate whether the decrease in artemisinin bioavailability after repeated oral dosing in humans can be a result of increased efflux of artemisinin by P-glycoprotein or decreased membrane transport at the intestinal barrier. The effective jejunal permeability (Peff) of artemisinin was investigated using an in situ rat perfusion model. Fifty-four rats were randomized to one of three treatment arms: no pretreatment, pretreatment with artemisinin emulsion for 5 days (60 mg/kg/day, p.o. ), or pretreatment with emulsion vehicle for 5 days.

Author(s): 
Svensson, U. S.
Sandström, R.
Carlborg, O.
Lennernäs, H.
Ashton, M.
Publication Title: 
Antimicrobial Agents and Chemotherapy

The pharmacokinetic properties of oral and intravenous artesunate (2 mg/kg of body weight) were studied in 19 adult patients with acute uncomplicated Plasmodium falciparum malaria by using a randomized crossover design. A sensitive bioassay was used to measure the antimalarial activity in plasma which results from artesunate and its principal metabolite, dihydroartemisinin. The oral study was repeated with 15 patients during convalescence. The mean absolute oral bioavailability of the antimalarial agent in patients with acute malaria was 61% (95% confidence interval [CI], 52 to 70%).

Author(s): 
Newton, P.
Suputtamongkol, Y.
Teja-Isavadharm, P.
Pukrittayakamee, S.
Navaratnam, V.
Bates, I.
White, N.

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