PubMed · 3239236
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E S Kim, T T Shakhobiddinov. 1988. [Acrodermatitis enteropathica].. https://pubmed.ncbi.nlm.nih.gov/3239236/
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BACKGROUND AND OBJECTIVE: No complete review of the cutaneous manifestations of eating disorders exists. We therefore, set out to review and systematically describe the clinical and histopathologic features of dermatologic conditions associated with anorexia nervosa, bulimia nervosa, and obesity. Differential diagnosis, pathophysiology, laboratory studies, and treatment are also reviewed. METHODS: Index Medicus review (1966 to present) using Ovid-MEDLINE. Search terms included eating disorders, anorexia nervosa, bulimia nervosa, eating disorders not otherwise specified (ED-NOS), and obesity, as well as the terms dermatology skin and cutaneous manifestations, with cross-referencing sources. These were combined with our own clinical experience. All relevant publications, including case reports, case series, cohort studies, and histopathologic studies giving at least Level II-3 evidence (evidence from comparisons between times or places with or without the intervention, including dramatic results in uncontrolled experiments), were selected. CONCLUSION: Forty dermatological signs have been reported in eating disorder patients. Eating disorders have many cutaneous manifestations and cutaneous signs may lead to the diagnosis of an occult eating disorder. The resolution of skin eruptions in eating disorder patients often depends on treatment of the underlying disorder.
Zinc is essential to a wide range of cellular processes; therefore, it is important to elucidate the molecular mechanisms of zinc homeostasis. To date, no zinc transporters expressed at the enterocyte apical membrane, and so essential to mammalian zinc homeostasis, have been discovered. We identified hZTL1 as a human expressed sequence tag with homology to the basolateral enterocyte zinc transporter ZnT1 and deduced the full-length cDNA sequence by PCR. The protein of 523 amino acids belongs to the cation diffusion facilitator family of membrane transporters. Unusually, the predicted topology comprises 12 rather than 6 transmembrane domains. ZTL1 mRNA was detected by reverse transcription-PCR in a range of mouse tissues. A Myc-tagged hZTL1 clone was expressed in transiently transfected polarized human intestinal Caco-2 cells at the apical membrane. Expression of hZTL1 mRNA in Caco-2 cells increased with zinc supplementation of the nutrient medium; however, in the placental cell line JAR hZTL1 appeared not to be regulated by zinc. Heterologous expression of hZTL1 in Xenopus laevis oocytes increased zinc uptake across the plasma membrane. The localization, regulatory properties, and function of hZTL1 indicate a role in regulating the absorption of dietary zinc across the apical enterocyte membrane.
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