. 2021 Jul 22;100(11):101393. doi: 10.1016/j.psj.2021.101393

Table 5.

Coefficients of correlation (Spearmann's rank correlation, r_s) between amino acid and dipeptide concentrations in breast muscle and blood plasma.

		Parameter
Parameter	Age, d	His	β-Alanine	Carnosine	Anserine	1MHis¹
Concentration per breast tissue weight, µg/g
β-Alanine	35	−0.668^⁎⁎⁎
Carnosine		0.468^⁎⁎⁎	−0.630^⁎⁎⁎
Anserine		0.164	−0.116	0.139
β-Alanine	54	−0.323*
Carnosine		0.029	−0.358^⁎⁎
Anserine		−0.412^⁎⁎	−0.214	0.494^⁎⁎⁎
Concentration in blood plasma, µg/mL
β-Alanine	35	−0.193
Carnosine		0.739^⁎⁎⁎	0.044
Anserine		0.372^⁎⁎	0.078	0.603^⁎⁎⁎
1MHis		0.776^⁎⁎⁎	−0.125	0.623^⁎⁎⁎	0.486^⁎⁎⁎
3MHis²		0.872^⁎⁎⁎	−0.182	0.731^⁎⁎⁎	0.453^⁎⁎⁎	0.808^⁎⁎⁎
β-Alanine	54	−0.044
Carnosine		0.680^⁎⁎⁎	−0.050
Anserine		0.241	−0.028	0.455^⁎⁎⁎
1MHis		0.748^⁎⁎⁎	−0.215	0.647^⁎⁎⁎	0.537^⁎⁎⁎
3MHis		0.757^⁎⁎⁎	−0.016	0.618^⁎⁎⁎	0.386^⁎⁎	0.777^⁎⁎⁎

The strength of correlation is given as low when r_s ≤0.1, medium when r_s ≤0.3 and high when r_s ≤0.5.

P-values are ranked by using: *for P ≤ 0.5, **for P ≤ 0.01 and ***for P ≤ 0.001.

1-methylhistidine.

3-methylhistidine.