PMID- 29238164 OWN - NLM STAT- MEDLINE DCOM- 20180723 LR - 20220311 IS - 1177-8881 (Electronic) IS - 1177-8881 (Linking) VI - 11 DP - 2017 TI - A novel transdermal nanoethosomal gel of betahistine dihydrochloride for weight gain control: in-vitro and in-vivo characterization. PG - 3377-3388 LID - 10.2147/DDDT.S144652 [doi] AB - BACKGROUND: Betahistine dihydrochloride (BDH) is a histamine analog used to control weight gain, with short elimination half-life and gastric irritation as side effects. OBJECTIVE: The aim of the current investigation is to formulate and optimize a topical BDH ethosomal gel for weight gain control. MATERIALS AND METHODS: Box-Behnken design was applied to study the effect of independent variables: phosphatidylcholine (PC), propylene glycol (PG), and ethanol on vesicle size; entrapment efficiency; % drug release; and flux. The morphology and zeta potential of the optimized formulation were evaluated. The % drug release, flux, and pharmacodynamics of the optimized formulation gel were studied. RESULTS: The size and entrapment efficiency percent had a direct positive relationship with the concentration of PC and negative relationship with ethanol and PG. The % drug release and flux decreased with increasing PC and PG, while ethanol enhanced both responses. Regression modeling indicated a good correlation between dependent and independent variables, where F16 was chosen as the optimized formulation. F16 showed well-defined spherical vesicles and zeta potential of -24 mV, and % release from the gel exceeded 99.5% over 16 h with the flux of 0.28 mg/cm(2)/h. Food intake and weight gain of rats were significantly decreased after transdermal application of the BDH ethosomal gel when compared with control, placebo, and BDH gel. The histopathological findings proved the absence of inflammation and decrease in adipose tissue. CONCLUSION: Results obtained showed a significant, sustained transdermal absorption of BDH ethosomal gel and, consequently, a decrease in food intake and weight gain. FAU - El-Menshawe, Shahira F AU - El-Menshawe SF AD - Department of Pharmaceutics and Industrial Pharmacy, Beni-Suef University, Beni-Suef. FAU - Ali, Adel Ahmed AU - Ali AA AD - Department of Pharmaceutics and Industrial Pharmacy, Beni-Suef University, Beni-Suef. FAU - Halawa, Abdelkhalk Ali AU - Halawa AA AD - Department of Pharmaceutics and Clinical Pharmacy, Nahda University, Beni-Suef, Egypt. FAU - Srag El-Din, Ahmed Sg AU - Srag El-Din AS AD - Department of Pharmaceutics and Clinical Pharmacy, Nahda University, Beni-Suef, Egypt. LA - eng PT - Journal Article DEP - 20171128 PL - New Zealand TA - Drug Des Devel Ther JT - Drug design, development and therapy JID - 101475745 RN - 0 (Gels) RN - X32KK4201D (Betahistine) SB - IM MH - Adipose Tissue/drug effects MH - Administration, Oral MH - Animals MH - Betahistine/administration & dosage/*pharmacology MH - Eating MH - Female MH - Gels/administration & dosage/pharmacology MH - Inflammation/drug therapy MH - Nanostructures/administration & dosage/*chemistry MH - Particle Size MH - Rats MH - Surface Properties MH - Weight Gain/drug effects PMC - PMC5713695 OTO - NOTNLM OT - Box-Behnken design OT - neural histamine OT - obesity OT - pharmacodynamics OT - regression modeling COIS- Disclosure The authors report no conflicts of interest in this work. EDAT- 2017/12/15 06:00 MHDA- 2018/07/24 06:00 PMCR- 2017/11/28 CRDT- 2017/12/15 06:00 PHST- 2017/12/15 06:00 [entrez] PHST- 2017/12/15 06:00 [pubmed] PHST- 2018/07/24 06:00 [medline] PHST- 2017/11/28 00:00 [pmc-release] AID - dddt-11-3377 [pii] AID - 10.2147/DDDT.S144652 [doi] PST - epublish SO - Drug Des Devel Ther. 2017 Nov 28;11:3377-3388. doi: 10.2147/DDDT.S144652. eCollection 2017.