Diabetes mellitus and hearing loss

Table 1 Typical pathological changes of the inner ear in the DM group compared with the non-diabetic group: human temporal bone

Inner ear	Characteristic	Years	Author	Article
Cochlear vascular system
SMA	Thickness of the vessel walls ↑	2010	Kariya et al.	(61)
SV	Significant atrophy	2005	Fukushima et al.	(62)
	Significant atrophy	2006	Fukushima et al.	(63)
	Mild atrophy was seen in two cases, normal in two cases	1971	Makishima et al.	(64)
	Total area ↓	2005	Fukushima et al.	(62)
VSV	Thickness of the vessel walls ↑	2005	Fukushima et al.	(62)
		2006	Fukushima et al.	(63)
		1961	Jorgensen et al.	(65)
	PAS-positive deposits	1961	Jorgensen et al.	(65)
	PAS-positive deposits	1971	Makishima et al.	(64)
The organ of Corti
OHCs	Number ↓	2005	Fukushima et al.	(62)
	Number ↓	2006	Fukushima et al.	(63)
	Normal in three cases, slight degeneration in one case	1971	Makishima et al.	(64)
IHCs	Number NS	2005	Fukushima et al.	(62)
IHCs	Number NS	2006	Fukushima et al.	(63)
Cochlear nerve system
Spiral ganglion	Significant atrophy	1971	Makishima et al.	(64)
	The number of SGNs ↓	1971	Makishima et al.	(64)
	The number of SGNs NS	2005	Fukushima et al.	(62)
	The number of SGNs NS	2006	Fukushima et al.	(63)

ISSN: 1528-3658