Biomedical subjects

Manuel Montoya

Publications and source records attributed to Manuel Montoya.

3 recordsLinked to original sources

PubMed2002

First molecular evidence of new Bartonella spp. in fleas and a tick from Peru.

Fleas, lice, and ticks collected in Peru in a suburban area of Cusco in November 1998 were tested by polymerase chain reaction for the presence of Bartonella DNA using primers amplifying a fragment of the intergenic spacer region (ITS) gene. Three new Bartonella genotypes were detected in Pulex fleas self-collected from the beds and clothes of schoolchildren and adults. A fourth new genotype was also detected from a tick found on a sheep in the same area. One of the genotypes is closely related to B. vinsoni subsp. berkhoffii, and the others seem to originate from unknown Bartonella species, whose medical importance has yet to be clarified.

Animals↗

PubMedDate not supplied

Rhinoscleroma: eight Peruvian cases.

Rhinoscleroma is a rare infection in developed countries; although, it is reported with some frequency in poorer regions such as Central Africa, Central and South America, Eastern and Central Europe, Middle East, India and Indonesia. Nowadays, rhinoscleroma may be erroneously diagnosed as mucocutaneos leishmaniasis, leprosy, paracoccidioidomycosis, rhinosporidiasis, late syphilis, neoplasic diseases or other upper airway diseases. From 1996 to 2003, we diagnosed rhinoscleroma in eight patients attended in the Dermatologic and Transmitted Diseases service of "Cayetano Heredia" National Hospital, in Lima, Peru. The patients presented airway structural alterations producing nasopharyngeal, oropharyngeal and, in one patient, laryngeal stenosis. Biopsy samples revealed large vacuolated macrophages (Mikulicz cells) in all patients. Ciprofloxacin 500 mg bid for four to 12 weeks was used in seven patients and oxytetracycline 500 mg qid for six weeks in one patient. After follow-up for six to 12 months the patients did not show active infection or relapse, however, all of them presented some degree of upper airway stenosis. These cases are reported because of the difficulty diagnosing the disease and the success of antibiotic treatment.

Adult↗

PubMedDate not supplied

Sexual behavior in travelers visiting Cuzco.

BACKGROUND: In South America, little is known about sexual behavior and risk factors for acquiring sexually transmitted diseases (STDs) among travelers and among local people sexually interacting with travelers. There is evidence that, in Peru, significant sexual interaction between these groups exists. METHOD: An anonymous written questionnaire was administered to travelers in the airport and bus stations before they left Cuzco. RESULTS: Of the travelers,5.6% engaged in sexual activity with a new partner during their stay in Cuzco. Sexual intercourse with other travelers was most common (76/140, 54.3%), followed by sex with local partners (57/140, 40.7%), and with commercial sex workers (3/140, 2.15%). Consistent condom use was reported by 97/140 (69.3%). In the multivariate analysis, the following variables were independently associated with casual sex: male gender, single marital status, age between 15 and 35 years, non-United States travelers (NUSTs), traveling alone or with friends, length of stay more than 30 days, homosexual or bisexual orientation, and expectation of having sex before traveling. Homosexual and bisexual travelers had 3 or more new sexual partners more frequently than heterosexual travelers (4/8, 18/129, OR=6.17 (1.16<OR<33.5)). NUSTs received more pretravel advice (698/1587, 210/718, OR=1.86 (1.54<OR<2.24)) and engaged in more sexual activity (100/1,587, 25/722, OR=1.86 (1.20<OR<2.93)) than United States travelers (USTs). CONCLUSION: Travelers visiting Cuzco engage in sexual activities that put them at risk of acquiring STD and transmitting it, both in their home country and in Peru. We recommend the inclusion of Peru and possibly other Latin American countries in the list of destinations where there is substantial risk of transmission of STD and the provision of pretravel advice regarding this issue to travelers to Peru.

Adolescent↗