Pinopod

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Pinopod

The pinopod is a structure found on the surface of the endometrium, the innermost layer of the uterus. It is a type of microvilli that is present during the window of implantation, a short period in the menstrual cycle when the endometrium is receptive to the embryo and implantation can occur.

Etymology[edit | edit source]

The term "pinopod" is derived from the Greek words "pino", meaning "to drink", and "pod", meaning "foot". This is in reference to the pinopod's function in absorbing uterine fluid, which is thought to aid in the preparation of the endometrium for implantation.

Structure and Function[edit | edit source]

Pinopods are small, finger-like projections that appear on the surface of the endometrium during the mid-luteal phase of the menstrual cycle, which corresponds to the window of implantation. They are a type of microvilli, which are structures that increase the surface area of cells and are involved in a variety of functions, including absorption and secretion.

The exact function of pinopods is not fully understood, but they are believed to play a role in the process of implantation. They are thought to aid in the absorption of uterine fluid, which helps to prepare the endometrium for the arrival of the embryo. Some studies have also suggested that pinopods may be involved in the adhesion of the embryo to the endometrium, a crucial step in the implantation process.

Clinical Significance[edit | edit source]

The presence and morphology of pinopods can be used as a marker of endometrial receptivity, which is a key factor in the success of in vitro fertilization (IVF) treatments. A decrease in the number of pinopods or abnormalities in their structure can indicate a less receptive endometrium, which may reduce the chances of successful implantation and pregnancy.

See Also[edit | edit source]

References[edit | edit source]


Pinopod Resources
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Contributors: Prab R. Tumpati, MD