Table 2.
Factor loadings corresponding to the first two PCs based on sperm biomarkers within uncapacitated and swim-up capacitated samples
| Biomarker | r | |
|---|---|---|
| PC1 | PC2 | |
| Concentration | −0.833* | −0.341* |
| Total motility | 0.685* | 0.427* |
| Viability | 0.611* | 0.326* |
| Normal morphology | 0.606* | 0.147 |
| Acrosome reaction | ||
| Spontaneous | 0.405* | −0.001 |
| Calcium ionophore | 0.055 | −0.055 |
| Tyrosine phosphorylation | ||
| ES | 0.713* | 0.493* |
| PP | 0.763* | 0.268 |
| ES + PP | 0.561* | 0.407* |
| DNA fragmentation | −0.670* | −0.146 |
| Sugar-binding patterns, AAA lectin | ||
| P1 | 0.748* | −0.319* |
| P2 | 0.451* | 0.331* |
| P3 | 0.051 | −0.258 |
| P4 | −0.867* | −0.271 |
| P5 | −0.326* | 0.622* |
| Sugar-binding patterns, ConA lectin | ||
| P1 | −0.122 | −0.601* |
| P2 | 0.331* | 0.196 |
| P3 | 0.023 | −0.295 |
| P4 | 0.097 | −0.196 |
| P5 | −0.226 | 0.697* |
| Sugar-binding patterns, PNA lectin | ||
| P1 | 0.759* | −0.479* |
| P3 | −0.197 | −0.141 |
| P5 | −0.702* | 0.590* |
| Sugar-binding patterns, WGA lectin | ||
| P1 | −0.430* | −0.558* |
| P3 | 0.136 | −0.228 |
| P4 | 0.457* | 0.398* |
| P5 | −0.257 | 0.380* |
*Correlation (Pearson’s r) at P<0.05. ES: equatorial segment; PP: principal piece; AAA: Aleuria aurantia agglutinin; ConA: Concanavalin A; PNA: Peanut agglutinin; WGA: Wheat germ agglutinin; PCs: Principal component 1 (PC1) and 2 (PC2)