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Ponce-Garcia, Gustavo,Villanueva-Segura, Olga K.,Garza-Elizondo, Karina,Villegas-Ramirez, Heriberto M.,Fernandez-Salas, Ildefonso,Rodriguez-Sanchez, Iram P.,Dzul-Manzanilla, Felipe,Flores-Suarez, Adri The Korea Society for Parasitology and Tropical Me 2022 The Korean Journal of Parasitology Vol.60 No.3
The head louse Pediculus humanus capitis (De Geer) is a hematophagous ectoparasite that inhabits the human scalp. The infestations are asymptomatic; however, skin irritation from scratching occasionally may cause secondary bacterial infections. The present study determined the presence and frequency of the knockdown resistance (kdr) mutation T929I in 245 head lice collected from Mexico, Peru, and Canada. Head lice were collected manually using a comb in the private head lice control clinic. Allele mutation at T9291 was present in 100% of the total sampled populations (245 lice) examined. In addition, 4.89% of the lice were homozygous susceptible, whereas 6.93% heterozygous and 88.16% homozygous were resistant, respectively. This represents the second report in Mexico and Quebec and fist in Lima.
Lycopene Improves Diet-Mediated Recuperation in Rat Model of Nonalcoholic Fatty Liver Disease
Rosa Maria Pina-Zentella,Jorge L. Rosado,Marco A. Gallegos-Corona,Luis Alberto Madrigal-Perez,Olga P. Garcia,Minerva Ramos-Gomez 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.6
The aim of the present study was to evaluate the synergic effect of lycopene (LYC) treatment with a dietary control in a nonalcoholic fatty liver disease (NAFLD) model induced with a high-fat diet (HFD). Sprague–Dawley rats were fed during 4 weeks with a normal diet (ND·4w) or an HFD (HFD·4w) to produce an NAFLD model. Then, rats from the ND·4w group continued during 4 weeks with the same diet (ND·8w), and rats from HFD were fed during 4 weeks with an ND (HFD·4w+ND·4w) or an ND plus LYC (HFD·4w+ND+LYC·4w). LYC (20 mg/kg) was administered daily by gavage. ND and ND+LYC diets partially reverted the following alterations due to HFD: liver weight, serum low-density lipoproteins (LDL), hepatic total cholesterol (TC), and catalytic activity of hepatic superoxide dismutase, catalase, and glutathione peroxidase, as well as macroscopic and microscopic images of livers. A higher recuperation to reach normality was obtained with ND+LYC in: liver weight, hepatic TC, serum LDL, and, in some instances, macroscopic and microscopic images of livers. Failures to recovery with both NDs were observed for malondialdehyde level and serum aspartate aminotransferase activity. Taken together, the results from this study suggest the potentially protective role of LYC against NAFLD; however, more clinical trials are needed to support this idea.