Systematic evaluation of microangiopathy in diabetic Chinese hamsters. I. Morphometric analysis of minimal glomerular basement membrane thickness in 11- to 15- and 19- to 23-month-old Chinese hamsters.
Renal glomeruli of 11- to 15- and 19- to 23-month-old nondiabetic (M) and diabetic (XA and AC) genetic sublines of Chinese hamsters were morphometrically analyzed to determine if minimal capillary basement membrane thickening (CBMT) is a microvascular complication in this animal model. Minimal glomerular capillary basement membrane thickness was significantly elevated in the AC diabetic subline (117.2 nm +/- 5.0, P less than 0.004) compared with the M nondiabetic subline (99.0 nm +/- 14.0) in the 11- to 15-month age span. However, in the 19- to 23-month age range, both the XA (140.2 nm +/- 20.0, P less than 0.02) and AC (140.1 nm +/- 12.4, P less than 0.04) diabetic sublines displayed significantly greater glomerular capillary basement membrane thickness in comparison with the M nondiabetic subline (119.0 nm +/- 13.4). The greatest influence on CBMT in the diabetics was shown to be a combination of the aging process and severity of hyperglycemia. This initial systematic morphometric study has demonstrated that glomerular CBMT is a characteristic microvascular lesion in 11- to 15-month-old diabetic AC and 19- to 23-month-old diabetic XA and AC Chinese hamsters in comparison with age-matched nondiabetics. Furthermore, this investigation suggests that the Chinese hamster appears to be an acceptable model for the study of chronic complications associated with diabetic nephropathy.
Diani
A R
AR
Sawada
G A
GA
Peterson
T
T
Wyse
B M
BM
Blanks
M C
MC
Vidmar
T J
TJ
Gerritsen
G C
GC
D000367:Age Factors; D000818:Animals; D001485:Basement Membrane / Q000473:pathology; D001786:Blood Glucose / Q000032:analysis; D006224:Cricetinae; D003412:Cricetulus; D003925:Diabetic Angiopathies / Q000473:pathology*; D005260:Female; D007678:Kidney Glomerulus / Q000473:pathology*; D008297:Male
D001786:Blood Glucose