114 citations
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October 2009 in “Gastroenterology” This review discusses zinc's role as an essential trace element in human nutrition, particularly its importance in total parenteral nutrition, and reports no new clinical results.
February 1990 in “Pathology, research and practice” This study in rats with a portocaval shunt observed severe ultrastructural damage to the inner ear, associated with zinc deficiency and symptoms resembling liver cirrhosis in humans.
50 citations
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May 1985 in “The journal of pediatrics/The Journal of pediatrics” This study reported successful treatment of biotin deficiency in three patients receiving total parenteral nutrition, suggesting current biotin supplementation recommendations may be inadequate to maintain normal biotin status.
3 citations
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December 2019 in “Biomaterials Research/Biomaterials research” This study found that the concentrations of major inorganic elements in human scalp hair increase with age up to 25 years, and calcium and magnesium concentrations are significantly associated with sex in individuals over 20.
43 citations
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April 2005 in “The Journal of Dermatology” This case report describes a 5-month-old Japanese infant with biotin deficiency, where daily oral biotin supplementation led to significant improvements in skin conditions and hair growth.