Combinations of the proteoglycans glucosamine hydrochloride (GH) and chondroitin sulfate (GS) are available as dietary supplements. These over-the-counter compounds are not subject to most federal regulations - as long as they do not claim any specific health benefits - and may not undergo the same testing and quality assurance methods as regulated drugs. GH and CS supplements are recommended by physicians and medical organizations to assist with joint health, based on a variety of studies and trials of the compounds' effects in model organisms and humans alike. Other studies have concluded that these supplements are safe to use but are no more effective than placebo for the relief of pain and inflammation associated with osteoarthritis. please answer the following questions: a) What is proteoglycan (briefly explain its structure)? b) What is the composition of chondroitin sulfate (GS)  (is it acidic, basic, neutral)? c) What is the commercial application of proteoglycan we studied and how it acts?

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Combinations of the proteoglycans glucosamine hydrochloride (GH) and chondroitin sulfate (GS) are available as dietary supplements. These over-the-counter compounds are not subject to most federal regulations - as long as they do not claim any specific health benefits - and may not undergo the same testing and quality assurance methods as regulated drugs. GH and CS supplements are recommended by physicians and medical organizations to assist with joint health, based on a variety of studies and trials of the compounds' effects in model organisms and humans alike. Other studies have concluded that these supplements are safe to use but are no more effective than placebo for the relief of pain and inflammation associated with osteoarthritis.

please answer the following questions:

a) What is proteoglycan (briefly explain its structure)?

b) What is the composition of chondroitin sulfate (GS)  (is it acidic, basic, neutral)?

c) What is the commercial application of proteoglycan we studied and how it acts?

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