PMID- 26799159 OWN - NLM STAT- MEDLINE DCOM- 20170613 LR - 20220331 IS - 1365-2133 (Electronic) IS - 0007-0963 (Linking) VI - 174 IP - 6 DP - 2016 Jun TI - Skin expression of mammalian target of rapamycin and forkhead box transcription factor O1, and serum insulin-like growth factor-1 in patients with acne vulgaris and their relationship with diet. PG - 1299-307 LID - 10.1111/bjd.14409 [doi] AB - BACKGROUND: Acne vulgaris is a multifactorial disorder of the pilosebaceous units. Several studies have reported that insulin-like growth factor (IGF)-1, forkhead box transcription factor (Fox)O1 and mammalian target of rapamycin (mTOR) interactions may be the key to understanding the links between genetic and environmental factors in acne vulgaris. OBJECTIVES: To evaluate the immunohistochemical detection of mTOR and FoxO1 in the skin, and the serum level of IGF-1 in patients with acne vulgaris. METHODS: This study was carried out on 60 participants, including 40 patients with acne and 20 controls. A diet questionnaire was administered to the patients and controls. Serum levels of IGF-1 were measured using enzyme-linked immunosorbent assay, and skin biopsies were taken from lesions on the backs of the patients and controls. FoxO1 and mTOR expression was detected using immunohistochemistry. RESULTS: A significantly higher serum IGF-1 level was found in the patients with acne than in the controls. The cytoplasmic expression of FoxO1 was found to be significantly greater in the acne group, whereas in the control subjects this expression was likely to be nuclear. Both the cytoplasmic expression and the nuclear expression of mTOR were significantly more intense in the patients with acne than in the controls. Excess consumption of a high-glycaemic-load diet was significantly associated with higher serum levels of IGF-1 and cytoplasmic expression of FoxO1 and mTOR. CONCLUSIONS: These results suggest that FoxO1, mTOR, serum IGF-1 and a high-glycaemic-load diet may play a role in acne pathogenesis. CI - (c) 2016 British Association of Dermatologists. FAU - Agamia, N F AU - Agamia NF AD - Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. FAU - Abdallah, D M AU - Abdallah DM AD - Department of Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. FAU - Sorour, O AU - Sorour O AD - Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. FAU - Mourad, B AU - Mourad B AD - Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Tanta University, Tanta, Egypt. FAU - Younan, D N AU - Younan DN AD - Department of Clinical Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt. LA - eng PT - Journal Article DEP - 20160420 PL - England TA - Br J Dermatol JT - The British journal of dermatology JID - 0004041 RN - 0 (Forkhead Transcription Factors) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Acne Vulgaris/*etiology/metabolism MH - Adult MH - Case-Control Studies MH - Diet/*adverse effects MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Forkhead Transcription Factors/*metabolism MH - Humans MH - Immunohistochemistry MH - Insulin-Like Growth Factor I/*metabolism MH - Life Style MH - Male MH - Skin/metabolism MH - TOR Serine-Threonine Kinases/*metabolism MH - Young Adult EDAT- 2016/01/23 06:00 MHDA- 2017/06/14 06:00 CRDT- 2016/01/23 06:00 PHST- 2016/01/15 00:00 [accepted] PHST- 2016/01/23 06:00 [entrez] PHST- 2016/01/23 06:00 [pubmed] PHST- 2017/06/14 06:00 [medline] AID - 10.1111/bjd.14409 [doi] PST - ppublish SO - Br J Dermatol. 2016 Jun;174(6):1299-307. doi: 10.1111/bjd.14409. Epub 2016 Apr 20.