University of Los Andes

About: University of Los Andes is a education organization based out in Bogotá, Colombia. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 17616 authors who have published 25555 publications receiving 413463 citations.

A randomized, active- and placebo-controlled study of the efficacy and safety of different doses of dutasteride versus placebo and finasteride in the treatment of male subjects with androgenetic alopecia.

Abstract: Background Dihydrotestosterone is the main androgen causative of androgenetic alopecia, a psychologically and physically harmful condition warranting medical treatment. Objective We sought to compare the efficacy and safety of dutasteride (type 1 and 2 5-alpha reductase inhibitor) with finasteride (type 2 5-alpha reductase inhibitor) and placebo in men with androgenetic alopecia. Methods Men aged 20 to 50 years with androgenetic alopecia were randomized to receive dutasteride (0.02, 0.1, or 0.5 mg/d), finasteride (1 mg/d), or placebo for 24 weeks. The primary end point was hair count (2.54-cm diameter) at week 24. Other assessments included hair count (1.13-cm diameter) and width, photographic assessments (investigators and panel), change in stage, and health outcomes. Results In total, 917 men were randomized. Hair count and width increased dose dependently with dutasteride. Dutasteride 0.5 mg significantly increased hair count and width in a 2.54-cm diameter and improved hair growth (frontal view; panel photographic assessment) at week 24 compared with finasteride ( P = .003, P = .004, and P = .002, respectively) and placebo (all P Limitations The study was limited to 24 weeks. Conclusions Dutasteride increased hair growth and restoration in men with androgenetic alopecia and was relatively well tolerated.

Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV

Abstract: Searches for supersymmetry (SUSY) are presented based on the electroweak pair production of neutralinos and charginos, leading to decay channels with Higgs, Z, and W bosons and undetected lightest SUSY particles (LSPs). The data sample corresponds to an integrated luminosity of about 19.5 fb^(−1) of proton-proton collisions at a center-of-mass energy of 8 TeV collected in 2012 with the CMS detector at the LHC. The main emphasis is neutralino pair production in which each neutralino decays either to a Higgs boson (h) and an LSP or to a Z boson and an LSP, leading to hh, hZ, and ZZ states with missing transverse energy (E^(miss)_T). A second aspect is chargino-neutralino pair production, leading to hW states with E^(miss)_T. The decays of a Higgs boson to a bottom-quark pair, to a photon pair, and to final states with leptons are considered in conjunction with hadronic and leptonic decay modes of the Z and W bosons. No evidence is found for supersymmetric particles, and 95% confidence level upper limits are evaluated for the respective pair production cross sections and for neutralino and chargino mass values.

How urban characteristics affect vulnerability to heat and cold: a multi-country analysis

Abstract: BACKGROUND: The health burden associated with temperature is expected to increase due to a warming climate. Populations living in cities are likely to be particularly at risk, but the role of urban ...