. Author manuscript; available in PMC: 2016 Sep 1.

Published in final edited form as: Equine Vet J. 2015 Sep 7;48(5):548–556. doi: 10.1111/evj.12493

TABLE 1.

The histopathological scores and prevalence of histopathological features of frozen muscle biopsy samples from control Arabians and Arabian horses with a history of exertional rhabdomyolysis selected prospectively or retrospectively

		Central nuclei	Anguloid atrophy	Subs. vacuoles	Glycogen		Amylase resistant polysaccharide
	n	Central nuclei	Anguloid atrophy	Subs. vacuoles	Subs.	Cytop.	Amylase resistant polysaccharide
Score
Controls	14	0.5 ± 1.0	0.54 ± 0.69	0.1 ± 0.3	0.7 ± 0.7	0.2 ± 0.4	0
Pro-ER	13	1.4 ± 0.6^*	0.54 ± 0.63	0.3 ± 0.6	0.5 ± 0.8	0.5 ± 0.6	0
Retro-ER	25	1.1 ± 0.8^*	1.26 ± 1.85^*	0.7 ± 0.8^**	0.8 ± 0.9	1.4 ± 0.9^***	0.3 ± 0.6^*
Prevalence (score ≥1)
Controls	14	4 (29%)	6 (43%)	1 (7%)	7 (50%)	5 (36%)	0
Pro-ER	13	12 (92%)^**	6 (46%)	3 (23%)	4 (31%)	7 (54%)	0
Retro-ER	25	21 (84%)^**	19 (76%)^***	12 (48%)^*	13 (52%)	21 (84%)^*	6 (24%)

Scores are means ± s.d. Pro-ER = prospective exertional rhabdomyolysis group; Retro-ER= retrospective exertional rhabdomyolysis group; Subs. = subsarcolemmal; Cytop. = cytoplasmic.

Significantly different from controls in same column at P<0.05.

^**

Significantly different from controls in same column at P<0.01.

^***

Significantly different from controls in same column at P<0.001.