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  • Title: Hyaluronan turnover in the rat small intestine.
    Author: Ostgaard G, Reed RK.
    Journal: Acta Physiol Scand; 1993 Oct; 149(2):237-44. PubMed ID: 8266813.
    Abstract:
    The main metabolic pathway for the interstitial matrix component hyaluronan seems to be via lymph. Present estimates of turnover of intestinal hyaluronan are based on isolated organs and/or experiments in anaesthesia over a few hours. In this study lymph was sampled from the main mesenteric lymphatic for 24 h in awake, restrained rats. The tissue content of hyaluronan averaged 28 micrograms g-1 in the duodenum/jejunum and 124 micrograms g-1 in the colon. Based on tissue content and lymphatic output, the turnover rate of hyaluronan in the small intestine was estimated at approximately 50%. In another experimental group anaesthetized rats were fed either phosphate buffer or triolein in buffer via a gastric tube. Lymph flow increased with fluid absorption from the gut and hyaluronan output in lymph was elevated correspondingly. However, no effect of acute fat administration on hyaluronan concentration or lymph flow could be demonstrated.
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