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1.
Acta Microbiol Immunol Hung ; 67(3): 156-160, 2020 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-32223304

RESUMO

Demodex folliculorum shows a high occurrence in the general population, however, its pathologic relevance is still controversial. In this prospective study, we evaluated the prevalence of D. folliculorum on eyelashes from 8,033 subjects of a university population (including 7,782 students, and 251 academics). Additional information on some risk factors to infection by the mites was evaluated, as well. A prevalence of 1.47% was found, where 118 individuals were positive for D. folliculorum; and, among them, 63 (53.4%) were women and 55 (46.6%) were men. Results showed a negative correlation with the age (r = -0.45), the highest prevalence was found in individuals between 19 and 22 years of age (2.1%, 84 patients). The number of D. folliculorum mites did not differ between the right and left eye; however, the use of cosmetics or facial cream, contact lens, hair removers, were factors present in patients infected with D. folliculorum. Although Demodex prevalence did not increase in line with weight, we found significantly higher prevalence in the 51-60 kg and 71-80 kg weight groups, and a particularly high prevalence in the over 81 kg weight group (2.6%). In conclusion, it was observed that the main population positive to infection consisted of young adults; this is in contrast with the international evidence reporting a high rate of infection in older adults. Besides, our results suggest that items of daily use such as cosmetics, facial cream, eyeliner, glasses, or contact lenses may be some of the main culprits of the infection by D. folliculorum.


Assuntos
Pestanas/parasitologia , Folículo Piloso/parasitologia , Infestações por Ácaros/epidemiologia , Ácaros , Adolescente , Adulto , Animais , Peso Corporal , Lentes de Contato/efeitos adversos , Cosméticos/efeitos adversos , Óculos/efeitos adversos , Feminino , Humanos , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Prevalência , Estudos Prospectivos , Fatores de Risco , Adulto Jovem
2.
Acta Trop ; 137: 95-8, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24836918

RESUMO

Metacercariae of Paragonimus mexicanus were collected in crabs Tehuana guerreroensis (Rathbun, 1933) in the municipality of Putla, Oaxaca, Mexico. Metacercariae were found in 20.8% of the crabs collected, with an average of 1.9 metacercarie per crab. Stained metacercariae showed the specific characteristics of P. mexicanus by morphology and sequencing a fragment of the 28S ribosomal gene obtained by PCR. These findings reveal that T. guerreroensis is an intermediate host for P. mexicanus; this new report is relevant considering the potential risk of transmission in the states of Oaxaca and Guerrero, Mexico.


Assuntos
Braquiúros/parasitologia , Metacercárias/isolamento & purificação , Paragonimus/isolamento & purificação , Animais , Sequência de Bases , Análise por Conglomerados , DNA de Helmintos/química , DNA de Helmintos/genética , DNA Ribossômico/química , DNA Ribossômico/genética , Metacercárias/classificação , Metacercárias/genética , México , Microscopia , Dados de Sequência Molecular , Paragonimus/anatomia & histologia , Paragonimus/classificação , Paragonimus/genética , Filogenia , RNA Ribossômico 28S/genética , Análise de Sequência de DNA
3.
Acta Microbiol Immunol Hung ; 59(2): 257-62, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22750785

RESUMO

This study was carried out to determine the prevalence of Demodex mites in eyelashes of people from different places from Oaxaca. One thousand and ten patients underwent epilation of eight eyelashes from each eye and they were processed to search Demodex which was found in 208 (20%) of the patients and among them male was more affected than female, 119 (57%) and 89 (43%), respectively. There was not found a relationship between clinical manifestations among these patients since 101 (49%) and 107 (51%) of them were symptomatic and asymptomatic, respectively. The range of age that was more affected was 96-105 (100%), followed by 86-95 (75%) and 76-85 (64%) years old. The less affected were individuals of 15-25 years old (11%). Demodex folliculorum was relatively high in the eyelashes of individuals in young and old people in the rural region studied. These people are generally the most vulnerable patients because they live in overcrowded conditions and poor hygiene which facilitates the direct infection. Demodex brevis was found in only one sample.


Assuntos
Pestanas/parasitologia , Infestações por Ácaros/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Prevalência , Temperatura
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