Bishop Flap and Sigma Flap to Repair Surgical Defects in High-Tension Anatomical Regions. / Colgajo obispo y colgajo sigma para defectos quirúrgicos en zonas anatómicas de elevada tensión.

BACKGROUND: The reconstruction of surgical defects in high-tension anatomical regions is challenging due to the ischemia and subsequent necrosis associated with tension closure. Research on new flaps capable of closing these defects exerting less tension would be a tremendous advancement in dermatological surgery. PATIENTS AND METHODS: We conducted a multicenter, retrospective study that used 2 new flaps-the bishop and the sigma ones-to repair surgical defects in high-tension regions such as the scalp, lower extremities, and the nasal pyramid. The bishop flap was used in 9 patients, 5 of whom exhibited their lesion in the nasal pyramid, 2 in the legs and another 2 in the scalp. The sigma flap was used in 6 patients, 5 of whom exhibited scalp lesions and 1 leg lesion. RESULTS: Uneventful and excellent results were obtained in all 15 patients due to infection, dehiscence, or necrosis. CONCLUSIONS: Both the bishop and the sigma flaps are a good alternative to repair surgical defects in high-tension regions such as the scalp, lower extremities, or the nasal pyramid.

Lymphogranuloma Venereum in a Public Health Service Hospital in Southern Spain: A Clinical and Epidemiologic Study. / Estudio clínico y epidemiológico del linfogranuloma venéreo en un hospital público del sur de España.

Lymphogranuloma venereum (LGV) is an emerging disease in men who have sex with men (MSM): the incidence was 1.15 cases per 100,000 population in Spain in 2017. Patients with LGV characteristically have severe proctitis that can cause abscesses, fistulas, and anal stenosis. Genital ulcers and inflammatory inguinal adenopathy may occasionally be present. The aim of this study was to describe a series of patients with LGV treated in a public health service hospital in Andalusia, Spain. MATERIAL AND METHODS: Retrospective, observational description of a series of patients diagnosed with LGV. We gathered epidemiologic, clinical, microbiologic, and treatment data. Patients' sexual behaviors were also noted. RESULTS: We found 17 cases of LGV diagnosed in MSM between October 2016 and May 2019. Twelve of the patients were also infected with the human immunodeficiency virus, and 13 had severe proctitis with ulcers in the anal canal and rectum. Four patients had genital or inguinal manifestations. The following high-risk sexual behaviors were on record: a high number of sexual partners, receptive anal sex with strangers and without a condom, seeking sexual partners online, participation in group sex, and sex with partners from outside Andalusia. Chlamydia trachomatis serovar L2 was identified in all cases, and the infection responded well to oral doxycycline. Two patients with the most characteristic form of LGV required longer treatment cycles. Three required surgery. CONCLUSIONS: When symptomatic proctitis is found in MSM who engage in high-risk sex, the LGV exudate should be sampled and the C trachomatis serovar identified. Genital ulcers or inguinal buboes are also highly suggestive of LGV. Clinical suspicion and early treatment are the keys to preventing complications and disease transmission.

Survival study of treatment adherence by patients given oral oxibutynin for hyperhidrosis.

INTRODUCTION: In recent years, increasing use has been made of oral anticholinergics such as oxybutynin for the management of hyperhidrosis. The primary aim of this study is to determine the variables associated with adherence to this treatment, and secondarily to obtain data on its effectiveness, safety and adverse effects. MATERIAL AND METHODS: This is a prospective study of patients with hyperhidrosis, at any location, receiving treatment with oral oxybutynin in the period 2007-2016. Epidemiological variables, treatment details, effectiveness and adverse effects were recorded. Effectiveness was determined according to the Hyperhidrosis Disease Severity Scale (HDSS) at baseline, at 3 and 12 months and in successive visits. A descriptive analysis was performed, and Cox's bivariate and multivariate regressions were calculated to determine the variables associated with treatment adherence. RESULTS: A total of 201 patients (140 women) with a mean age of 34 years were included. The mean initial HDSS score was 3.8, and the median follow-up period was 29 months. At 3 months, 84.57% of the patients had responded to treatment (excellent response: 72.94%), but adverse effects were reported by 68.2%. At 12 months, 54.23% had responded (excellent response: 79.82%), with adverse effects in 75.2%. The main variable associated with greater adherence was affected areas: palms of the hands and soles of the feet. The following variables were associated with poorer adherence: onset of hyperhidrosis in adolescence, failure to provide an incrementally increasing, individualized dose, initial HDSS score of 3 and partial initial response. The multivariate analysis confirmed the association between the onset of hyperhidrosis during adolescence, the failure to provide a progressively increasing dose and palmar affectation. DISCUSSION: This study was conducted to identify the variables associated with adherence to treatment by hyperhidrosis patients treated with oral oxybutynin. This information would facilitate selection of patients for this treatment and enhance our understanding of the biological behaviour of such anticholinergics when used to treat hyperhidrosis.

UCLA's outreach program of science education in the Los Angeles schools.

The UCLA School of Medicine's Interactive Multi-media Exercises (IMMEX) Project began its outreach into pre-college education in the Los Angeles area in 1993. The project provides a model in which software and technology are effectively intertwined with teaching, learning, and assessment (of both students' and teachers' performances) in the classroom. The project has evolved into a special collaboration between the medical school and Los Angeles teachers. UCLA faculty and staff work with science teachers and administrators from elementary, middle, and high schools. The program benefits ethnically and racially diverse groups of students in schools ranging from the inner city to the suburbs. The project's primary goal is to use technology to increase students' achievement and interest in science, including medicine, and thus move more students into the medical school pipeline. Evaluations from outside project evaluators (West Ed) as well as from teachers and IMMEX staff show that the project has already had a significant effect on teachers' professional development, classroom practice, and students' achievement in the Los Angeles area.

Doxycycline control of prion protein transgene expression modulates prion disease in mice.

Conversion of the cellular prion protein (PrPC) into the pathogenic isoform (PrPSc) is the fundamental event underlying transmission and pathogenesis of prion diseases. To control the expression of PrPC in transgenic (Tg) mice, we used a tetracycline controlled transactivator (tTA) driven by the PrP gene control elements and a tTA-responsive promoter linked to a PrP gene [Gossen, M. and Bujard, H. (1992) Proc. Natl. Acad. Sci. USA 89, 5547-5551]. Adult Tg mice showed no deleterious effects upon repression of PrPC expression (>90%) by oral doxycycline, but the mice developed progressive ataxia at approximately 50 days after inoculation with prions unless maintained on doxycycline. Although Tg mice on doxycycline accumulated low levels of PrPSc, they showed no neurologic dysfunction, indicating that low levels of PrPSc can be tolerated. Use of the tTA system to control PrP expression allowed production of Tg mice with high levels of PrP that otherwise cause many embryonic and neonatal deaths. Measurement of PrPSc clearance in Tg mice should be possible, facilitating the development of pharmacotherapeutics.