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  • synthase
  • Alpha-lactalbumin, which is expressed in response to prolactin, increases the affinity of N-acetyllactosamine synthase for its substrate, causing increased production of lactose during lactation. (wikipedia.org)
  • It is a component of lactose synthase. (wikipedia.org)
  • The shorter transcript encodes a protein which is cleaved to form the soluble lactose synthase. (wikipedia.org)
  • Permease
  • Lactose Permease is produced by the lac Y gene, and transports the -galactoside into E. coli. (csbsju.edu)
  • Lactose permease is a membrane protein which is a member of the major facilitator superfamily. (wikipedia.org)
  • Lactose permease can be classified as a symporter, which uses the proton gradient towards the cell to transport β-galactosides such as lactose in the same direction into the cell. (wikipedia.org)
  • This form of lactose permease can bind lactose from outside the cell. (wikipedia.org)
  • bacteria
  • Undigested lactose fermented by bacteria in the colon creates lactic acid and other short-chain fatty acids that can be detected in a stool sample. (healingwell.com)
  • Lactose-positive bacteria build yellow colonies. (wikipedia.org)
  • The PTS Lactose-N,N'-Diacetylchitobiose (Lac) Family (TC# 4.A.3) includes several sequenced lactose porters of Gram-positive bacteria, as well as the Escherichia coli and Borrelia burgdorferi N,N'-diacetylchitobiose (Chb) porters. (wikipedia.org)
  • consumption
  • Treatment for lactose intolerance consists primarily of decreasing lactose consumption . (britannica.com)
  • Since lactose occurs mostly in milk, in most mammals, the production of lactase gradually decreases with maturity due to a lack of continuing consumption. (wikipedia.org)
  • While a variety of genetic, as well as nutritional, factors determine lactase expression, no evidence has been found for adaptive alteration of lactase expression within an individual in response to changes in lactose consumption levels. (wikipedia.org)
  • More recently, pooled analysis done by the Harvard School of Public Health showed no specific correlation between lactose-containing foods and ovarian cancer, and showed statistically insignificant increases in risk for consumption of lactose at 30 g/d. (wikipedia.org)
  • diarrhea
  • After a bout of infectious diarrhea, some kids can develop a temporary lactose intolerance that usually improves after a few days or weeks. (kidshealth.org)
  • Usually within 30 minutes to 2 hours after eating, someone with lactose intolerance will experience nausea, stomach cramps, bloating, gas, and diarrhea. (kidshealth.org)
  • Secondary lactose intolerance can occur at any age, and about 50 percent of infants with diarrhea will be found to have it. (britannica.com)
  • People can also develop lactose intolerance if they're taking certain medicines or just had an infection that caused diarrhea. (kidshealth.org)
  • Xiong L, Wang Y, Gong X, Chen M. Prevalence of lactose intolerance in patients with diarrhea-predominant irritable bowel syndrome: data from a tertiary center in southern China. (medscape.com)
  • A large lactose load may be dangerous for very young individuals because they are more prone to dehydration that can result from diarrhea caused by the lactose. (healingwell.com)
  • The principal symptom of lactose intolerance is an adverse reaction to products containing lactose (primarily milk), including abdominal bloating and cramps, flatulence, diarrhea, nausea, borborygmi, and vomiting (particularly in adolescents). (wikipedia.org)
  • colon
  • When lactose remains undigested and unabsorbed in the colon , it attracts water which remains in the gut and causes a laxative-like effect. (britannica.com)
  • That's because hydrogen is given off when lactose is broken down in the colon. (webmd.com)
  • sugars
  • Lactose is not added directly to many foods, because its solubility is less than that of other sugars commonly used in food. (wikipedia.org)