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Related Concept Videos

Aquaporins01:25

Aquaporins

4.9K
Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
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Accessory Structures of the Skin: Sweat Glands01:20

Accessory Structures of the Skin: Sweat Glands

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Sweat glands or sudoriferous glands are one of the important accessory structures of the skin. They are small, coiled tubular structures located in the dermis, the middle layer of the skin. Sweat glands are responsible for producing and secreting sweat, a watery fluid that helps regulate body temperature and excrete waste products.
Sweat glands are classified as merocrine glands; that is, the secretions are excreted by exocytosis through a duct without affecting the cells of the gland. There...
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Reabsorption and Secretion in the DCT and Collecting Duct01:26

Reabsorption and Secretion in the DCT and Collecting Duct

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The early phase of the DCT manages the reabsorption of approximately 10-15% of filtered water, 5–10% of filtered sodium, and 5–10% of filtered chloride. This process is facilitated by Na+–Cl− symporters in apical membranes and sodium-potassium pumps, as well as Cl− leakage channels in basolateral membranes. The early DCT also stands out as a site where parathyroid hormone (PTH) stimulates calcium reabsorption, depending on the body's requirements.
The distal...
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Sensory Functions of the Skin01:16

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The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
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Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

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Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
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Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

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The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
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Culturing Primary Rat Inner Medullary Collecting Duct Cells
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Aquaporins in Skin.

Zhuming Yin1,2,3,4,5,6, Huiwen Ren7

  • 1Department of Breast Oncoplastic Surgery, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.

Advances in Experimental Medicine and Biology
|January 30, 2023
PubMed
Summary

Aquaporins (AQPs) are proteins crucial for skin hydration and barrier function. This study explores the roles of six specific aquaporins in skin health, wound healing, and immune responses.

Keywords:
AquaporinsEpidermisPsoriasisSkinSkin in cancer

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Area of Science:

  • Dermatology and Cell Biology

Background:

  • The skin, the body's largest organ, provides a protective barrier against environmental stressors.
  • Skin structure comprises the hypodermis, dermis, and epidermis, each with vital functions.
  • Aquaporins (AQPs) are membrane proteins regulating water and small molecule transport, essential for cellular fluid balance.

Purpose of the Study:

  • To investigate the expression and function of aquaporins in the skin.
  • To elucidate the role of specific aquaporins (AQP1, 3, 5, 7, 9, and 10) in skin physiology.
  • To discuss the involvement of aquaporins in skin hydration, wound healing, and immune responses.

Main Methods:

  • Review of scientific literature on aquaporin expression and function in skin.
  • Analysis of the known roles of AQP1, 3, 5, 7, 9, and 10 in various skin cell types.
  • Discussion of the implications of aquaporin activity in skin homeostasis and disease.

Main Results:

  • Six aquaporin types (AQP1, 3, 5, 7, 9, and 10) are expressed in diverse skin cells.
  • These aquaporins are integral to maintaining skin hydration and barrier integrity.
  • Aquaporins play significant roles in skin's response to injury and immune challenges.

Conclusions:

  • Aquaporins are critical for multiple skin functions, including hydration and barrier maintenance.
  • The specific roles of AQP1, 3, 5, 7, 9, and 10 in skin health warrant further investigation.
  • Understanding aquaporin involvement can lead to new therapeutic strategies for skin conditions.