Changes in Adenylate Nucleotides Concentration and Na⁺, K⁺-ATPase Activities in Erythrocytes of Horses in Function of Breed and Sex

Table 5

Correlation coefficient ($r$) between adenine nucleotides concentration ($\mu$M), total adenylate nucleotide pool (TAN), values of the adenylate energy charge (AEC) in erythrocytes and the Na⁺, K⁺-ATPase activities of stallions and mares Wielkopolska breed (W, w), Hanoverian breed (H, h), Ardenian breed (A, a); *-significant difference ($P<.05$).

Dependent variable		Independent variable
		ATP		ADP		AMP		TAN		AEC
		$\mu {\text{M}}_{{\rm M}\text{RBC}}$
Na^+, K^+-ATPase $\mu$mol$P_i$/mg protein/h		stallions	mares	stallions	Mares	stallions	mares	stallions	mares	stallions	mares
	W, w	0.65*	0.35	0.49	0.76*	0.66*	0.56*	0.76*	0.48	$-$0.37	$-$0.09
	H, h	0.10	0.40	0.43	0.20	0.53*	0.01	0.26	0.43	$-$0.46	0.32
	A, a	0.85*	0.47	0.65*	0.66*	0.66*	0.36	0.85*	0.52*	0.23	0.52*