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Doctor Channels MacGyver to Help Asthmatic Toddler Aboard Transatlantic Flight
ABC News A New York doctor became a hero in the skies recently when he turned into a medical MacGyver by creating a device that helped an asthmatic toddler struggling to breathe during a transatlantic flight. Dr. Khurshid Guru, director of Robotic Surgery at … |
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Parents Should Suck Kid's Pacifiers To Prevent Asthma, Rashes – Study
CHANNELS Toddlers are less likely to have asthma and itchy rashes if their parents “cleaned” their pacifiers by sucking on them when the kids were infants, a small new study suggests. The findings don't prove that technique protects kids against asthma, eczema … Sucking Your Child's Pacifier Clean May Have Benefits Bathing Binky in Spit May Curb Baby's Allergy Risk – MedPage Today Parents' Saliva On Pacifiers Could Ward Off Baby's Allergies – for KUHF |
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Molecular expression and functional role of canonical transient receptor potential channels in airway smooth muscle cells.
Adv Exp Med Biol. 2011;704:731-47
Authors: Wang YX, Zheng YM
Multiple canonical or classic transient receptor potential (TRPC) molecules are expressed in animal and human airway smooth muscle cells (SMCs). TRPC3, but not TRPC1, is a major molecular component of native non-selective cation channels (NSCCs) to contribute to the resting [Ca(2+)](i) and muscarinic increase in [Ca(2+)](i) in freshly isolated airway SMCs. TRPC3-encoded NSCCs are significantly increased in expression and activity in airway SMCs from ovalbumin-sensitized/challenged “asthmatic” mice, whereas TRPC1-encoded channel activity, but not its expression, is largely augmented. The upregulated TRPC3- and TRPC1-encoded NSCC activity both mediate “asthmatic” membrane depolarization in airway SMCs. Supportively, tumor necrosis factor-? (TNF?), an important asthma mediator, increases TRPC3 expression, and TRPC3 gene silencing inhibits TNF?-mediated augmentation of acetylcholine-evoked increase in [Ca(2+)](i) in passaged airway SMCs. In contrast, TRPC6 gene silencing has no effect on 1-oleoyl-2-acetyl-sn-glycerol (OAG)-evoked increase in [Ca(2+)](i) in primary isolated cells. These findings provide compelling information indicating that TRPC3-encoded NSCCs are important for physiological and pathological cellular responses in airway SMCs. However, continual studies are necessary to further determine whether, which, and how TRPC-encoded channels are involved in cellular responses in normal and diseased (e.g., asthmatic) airway SMCs.
PMID: 21290324 [PubMed – in process]
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