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Lactase (EC 3.2.1.108) is an enzyme produced by many organisms and is essential to the complete digestion of whole milk. It breaks down the sugar lactose into its component parts, galactose and glucose. Lactase is found in the brush border of the small intestine of humans and other mammals.
A prolactin cell (also known as a lactotropic cell, epsilon acidophil, lactotrope, lactotroph, mammatroph, mammotroph) is a cell in the anterior pituitary which produces prolactin (a peptide hormone) in response to hormonal signals including dopamine (which is inhibitory), thyrotropin-releasing hormone and estrogen (especially during pregnancy), which are stimulatory.
5617 19109 Ensembl ENSG00000172179 ENSMUSG00000021342 UniProt P01236 P06879 RefSeq (mRNA) NM_000948 NM_001163558 NM_001163530 NM_011164 RefSeq (protein) NP_000939 NP_001157030 NP_001157002 NP_035294 Location (UCSC) Chr 6: 22.29 – 22.3 Mb Chr 13: 27.24 – 27.25 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Prolactin (PRL), also known as lactotropin and mammotropin, is a protein ...
Lactase persistence or lactose tolerance is the continued activity of the lactase enzyme in adulthood, allowing the digestion of lactose in milk. In most mammals , the activity of the enzyme is dramatically reduced after weaning . [ 1 ]
People with primary lactase deficiency cannot modify their body's ability to produce lactase. [1] In societies where lactose intolerance is the norm, it is not considered a condition that requires treatment. However, where dairy is a larger component of the normal diet, a number of efforts may be useful.
Dietary fructose intolerance occurs when there is a deficiency in the amount of fructose carrier.; Lactose intolerance is the most common problem of carbohydrate digestion and occurs when the human body doesn't produce a sufficient amount of lactase enzyme to break down the sugar lactose found in dairy.
A recent study conducted in 2020–2021 determined that Beta-Galactosidase activity correlates with senescence of the cells. Senescence of the cells can be interpreted as cells that do not divide, but cells that do not die. Beta-Galactosidase activity can be overexpressed, and this can lead to various diseases afflicting a wide range of body ...
In the gut they are found as glycosylphosphatidyl anchored enzymes on endothelial cells. The enzyme lactase is required for degradation of the milk sugar lactose and is present at high levels in infants, but in most populations will decrease after weaning or during infancy, potentially leading to lactose intolerance in adulthood.