I am actually reading an article entitled as "Leukocyte Telomere Length Correlates With Extended Female Fertility" so I'm doubtful about length of telomere in Leukocyte and Oocyte.
The telomere length of leukocyte will provide information about the quality of the oocyte. I cannot comment about the length of telomere in both leukocyte and oocyte.
For telomere length assessment in specific condition, the tissue of interest may be difficult to sample whereas peripheral blood leukocytes have been an accessible alternative cell type. Though leukocyte telomere length (LTL) is commonly used as a biomarker, representing telomere length in other cell types, and indicating physiologic and pathologic states in various tissues, it is not clear whether LTL always reflects telomere length in cell types involved in a specific disease of interest.
It is known that leukocyte telomere length decreases with increasing age, and increasing age is already known as a predictor of decreasing female reproductive performance.
Therefore, maternal age is known as a primary determinant of female fertility, which is limited by the decline in oocyte quantity and oocyte quality. Leukocyte telomere length could be explored as a biomarker for oocyte quality, which would help predict the chances to conceive at an advanced maternal age.
So, this could be an explanation for the statement, “Leukocyte Telomere Length Correlates With Extended Female Fertility".