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Πέμπτη 1 Απριλίου 2021

Caffeine improves bladder function in diabetic rats via a neuroprotective effect

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Exp Ther Med. 2021 May;21(5):501. doi: 10.3892/etm.2021.9932. Epub 2021 Mar 17.

ABSTRACT

Diabetic cystopathy (DCP) is one of the most common complications of diabetes mellitus (DM). A previous study reported that caffeine may improve bladder dysfunction in rats with DM. The aim of the present study was to investigate the mechanisms behind the capacity for caffeine to improve bladder function in rats with DM. Sprague Dawley rats were divided into four groups: control, caffeine, DM and DM plus caffeine treatment (DM + caffeine). Bladder function was measured by urodynamic analyses. The levels of nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF) and calcitonin gene-related peptide (CGRP) in the bladder tissue were detected by ELISA. Apoptosis in the dorsal root ganglion (DRG) was detected by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling assay. The expression levels of B-cell lymphoma-2 (Bcl-2), Bc l-2-associated X protein (Bax), caspase-3, cleaved caspase-3, caspase-9 and cleaved caspase-9 proteins in the DRG were detected by western blotting. Following treatment with caffeine, the urination time and micturition interval of rats with DM were improved, the bladder wet weight was decreased, and the maximum voiding pressure was increased. Relative to that in the DM group, the expression levels of NGF, BDNF and CGRP in the bladder tissue of DM + caffeine rats increased; cellular apoptosis in the DRG of DM + caffeine rates decreased; and the expression levels of Bcl-2, Bax, cleaved caspase-3 and cleaved caspase-9 proteins in the DRG of DM + caffeine rats were restored to a certain extent. In conclusion, caffeine promotes bladder function in rats with DM through a protective effect on DRG.

PMID:33791010 | PMC:PMC8005692 | DOI:10.3892/etm.2021.9932

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