20.500.12556/RUL-128833 Changes in the capillarity of the rat extensor digitorum longus muscle 4 weeks after nerve injury studied by 2D measurement methods We have previously shown by 3D study that 2 weeks after nerve injury there was no change in the length of capillaries per muscle fibre length in rat extensor digitorum longus muscle (EDL). The primary goal of the present 2D study was to determine the capillarity of rat EDL 4 weeks after various modes of nerve injury. Additionally, we wished to calculate the same capillary/fibre parameters that were used in our 3D stereological study. EDL muscles derived from denervated (4 weeks after nerve injury), re-innervated (4 weeks after two successive nerve crushes) and age-matched controls from the beginning (CON-1) and the end (CON-2) of the experiment were analysed in two ways. Global indices of capillarity, such as capillary density (CD) and capillary/fibre (C/F) ratio, were determined by automatic analysis, local indices as the number (CAF) and the length of capillaries around individual muscle fibres (Lcap) in relation to muscle fibre size were estimated manually by tracing the muscle fibre outlines and the transversally and longitudinally cut segments of capillaries seen in 5-%m-thin muscle cross sections. Four weeks after both types of nerve injury, CD increased in comparison to the CON-2 group (p < 0.001) due to atrophied muscle fibres in denervated muscles and probably proliferation of capillaries in re-innervated ones. Higher C/F, CAF (both p < 0.001) and Lcap (p < 0.01) in re-innervated than denervated EDL confirmed this assumption. Calculated capillary/fibre parameters were comparable to our previous 3D study, which strengthens the practical value to the adapted 2D method used in this study. nerve injury capillarity fluorescence imaging fast-twitch skeletal muscle morphometry poškodba živca kapilarnost fluorescentno slikanje true false true Angleški jezik Slovenski jezik Članek v reviji 2021-08-05 08:35:00 2021-08-05 08:35:06 2022-09-07 04:17:23 0000-00-00 00:00:00 2016 0 0 Str. 211-219 iss. 3 Vol. 201 2016 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 616-092 1422-6405 10.1159/000444140 32603865 RAZ_Cebasek_Vita_2016.pdf RAZ_Cebasek_Vita_2016.pdf 1 7357E9C5158A34C07BAC9CBFE11EBFF0 1168a12ced1d64239079f5f97bb3407da3a56a2753de9d46d194cbdfc8eca9ad 43af77fd-f5bd-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=145729 https://www.karger.com/Article/Abstract/444140 0 0351bf03-f5bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=145728 Medicinska fakulteta 0 0 0