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Related Concept Videos

Gap Junctions01:37

Gap Junctions

57.1K
Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...
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Gap Junctions01:27

Gap Junctions

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The cytoplasm of adjacent animal cells can exchange small molecules, ions, and secondary messengers via the communication channels which form the gap junctions. These junctions comprise a few hundred to thousands of molecular channels, each made of two halves, called the connexon hemichannel. A connexon is a hexamer of six transmembrane connexin proteins, which assemble radially, thus forming a pore or channel in the center. One connexon hemichannel docks with a corresponding connexon on the...
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Ovaries01:26

Ovaries

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The ovaries are roughly the size of almonds and measure approximately 2 to 3 centimeters in length. These paired structures are situated within the pelvic region and are anchored by the mesovarium—a peritoneal extension that also connects them to the wider structure of the broad ligament. The support system extends to the suspensory ligament, housing blood and lymphatic vessels. In addition, the ovarian ligament tethers the ovaries to the uterus.
On the ovarian surface, a layer of...
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P-N junction01:11

P-N junction

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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
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The Neuromuscular Junction01:19

The Neuromuscular Junction

18.8K
The nervous system consists of complex motor neuron circuits, including upper motor neurons originating from the cerebral cortex and lower motor neurons starting in the spinal cord, coordinating both voluntary and involuntary movements. Among these, somatic motor neurons activate skeletal muscles and are classified into alpha, beta, and gamma types. Alpha neurons are vital for voluntary movement coordination, while gamma neurons adjust muscle spindle sensitivity, and the function of beta...
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Anchoring Junctions01:03

Anchoring Junctions

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Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
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Recording Gap Junction Current from Xenopus Oocytes
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Gap junctions in the ovary: expression, localization and function.

Eran Gershon1, Vicki Plaks, Nava Dekel

  • 1Department of Biological Regulation, Weizmann Institute of Science, Rehovot 76100, Israel.

Molecular and Cellular Endocrinology
|December 29, 2007
PubMed
Summary
This summary is machine-generated.

Gap junctions, crucial for cell communication, involve connexins (Cx) 43 and Cx37 in the ovary. These proteins regulate ovarian function and may act as cancer suppressors.

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Area of Science:

  • Cellular Biology
  • Reproductive Biology
  • Oncology

Background:

  • Gap junctions facilitate direct cell-to-cell communication, vital for physiological processes.
  • In the ovary, gap junctions primarily comprise connexin 43 (Cx43) and connexin 37 (Cx37), essential for folliculogenesis and oogenesis.

Purpose of the Study:

  • To review current knowledge on gap junctional communication (GJC) in the ovary.
  • To explore the roles of Cx43 and Cx37 in normal ovarian function and pathological conditions, including cancer.

Main Methods:

  • Literature review of studies on ovarian gap junctions.
  • Analysis of the regulation and function of Cx43 and Cx37 in ovarian physiology and pathology.

Main Results:

  • Ovarian Cx43 is regulated by gonadotropins at multiple levels (transcriptional, translational, post-translational).
  • The regulatory mechanisms for ovarian Cx37 remain largely unknown.
  • Cx43, a gap junction protein, shows potential as a cancer suppressor.

Conclusions:

  • Gap junctions and their components (Cx43, Cx37) are critical for normal ovarian development and function.
  • Further research is needed to elucidate Cx37 regulation and the full implications of Cx43 in ovarian cancer suppression.