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Related Concept Videos

Endocrine Signaling01:45

Endocrine Signaling

Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
Autocrine Signaling01:01

Autocrine Signaling

Autocrine signaling is one of the many signaling mechanisms that function inside multicellular organisms to carry out intercellular communication. In this type of signaling mechanism, the same cell that secretes an extracellular signaling molecule also expresses the receptors to bind and respond to that signaling molecule.
Autocrine Signaling in Macrophages
Under normal physiological conditions, autocrine signaling is essential for maintaining homeostasis. This process is well characterized in...
Endocrine Signaling01:45

Endocrine Signaling

Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.

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Related Experiment Video

Updated: May 10, 2026

Two Methods for Establishing Primary Human Endometrial Stromal Cells from Hysterectomy Specimens
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Cell Communication in Endometrium: Understanding and Improving Endometrial Biomarkers.

Jeevitaa Kshersagar1, Mrunal N Damle1,2, Rakesh Sharma3

  • 1Department of Stem Cells & Regenerative Medicine, D.Y. Patil Education Society (Deemed University), Kolhapur, Maharashtra, India.

Advances in Experimental Medicine and Biology
|July 12, 2025
PubMed
Summary

Understanding endometrial receptivity is key to overcoming implantation failure in assisted reproductive technology. Junctional proteins regulate epithelial permeability, crucial for successful embryo implantation and advancing fertility treatments.

Keywords:
Adherent junctions and gap junctionsEndometrial receptivityImplantation failureInfertilityTight junctions

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Area of Science:

  • Reproductive Biology
  • Cell Biology
  • Molecular Medicine

Background:

  • Endometrial receptivity is crucial for successful embryo implantation.
  • Implantation failure persists as a significant challenge in assisted reproductive technology (ART).
  • The endometrium regulates epithelial permeability via junctional protein complexes.

Purpose of the Study:

  • To investigate the role of junctional proteins in endometrial receptivity.
  • To understand the molecular mechanisms underlying implantation failure.
  • To identify potential therapeutic targets for improving implantation rates.

Main Methods:

  • Immunohistochemical (IHC) staining was used to quantify protein expression.
  • Analysis of tight junctions (TJ), adherent junctions (AJ), and gap junctions (GJ).
  • Evaluation of zona occludin-1 (ZO-1), E-cadherin (E-cad), claudin-1 (Cla-1), and vascular angiogenic precursor (VAP) expression.

Main Results:

  • Key junctional proteins (ZO-1, E-cad, Cla-1, VAP) expression was quantified in the endometrium.
  • Protein expression patterns correlate with endometrial receptivity during the implantation window.
  • Junctional complexes regulate paracellular permeability essential for implantation.

Conclusions:

  • Understanding the expression and interaction of junctional proteins is vital for endometrial receptivity.
  • Defects in these molecular architectures may contribute to implantation failure.
  • Further research into these connecting molecules can lead to novel strategies to enhance implantation success.