“…Serum LP concentration increases owing to stress and ageing and in various diseases (Mkhitarian et al, 1977;Mikaelian et al, 1979;Chernysheva et al, 1981Chernysheva et al, , 1982Capel et al, 1983;Vasankari, 1995) such as hypertension (Uysal et al, 1986), hyperlipaemia (Uzel et al,1985;Violi et al, 1989), hypo-or hyperthyroidism (Dumitriu et al, 1998), diabetes (Violi et al, 1989) and arterial sclerosis (Stringer et al, 1989). In the present study, the ranges of CSF (normal 0.1^1.67 mmol/ml, abnormal 0.1^3.24) and serum (normal 0.11^3.10 nmol/ml, abnormal 0^2.16) LP concentrations in the dogs were wide, so no signi¢cant di¡erences between the two groups were noted (t-test and Mann^Whitney U-test).…”