Evaluation of Scalibor® deltamethrin collar chronic exposure in dogs.

Deltamethrin is a pesticide used worldwide with several applications in the control of nuisance arthropods in homes, agriculture, against ectoparasites in dogs and livestock. Recent studies indicate that deltamethrin can induce cardiotoxicity. Therefore, this study aimed to evaluate the toxicity of deltamethrin in dogs through exposure to commercial collars over 8 months.

Comparison of Blended Learning With Traditional Dermatology Learning for Medical Students: Prospective Evaluation Study.

Background: Novel internet-based applications and associated technologies have influenced all aspects of society, ranging from commerce and business to entertainment and health care, and education is no exception. In this context, this study was designed to evaluate the impact of a dermatology e-learning program on the academic performance of medical students in dermatology.

Objective: The aim of this study is to develop a dermatology blended-learning course for undergraduate medical students, evaluate the knowledge gained by students exposed to this course, and compare the results to those of traditional teaching methods.

Translation, cross-cultural adaptation, and validation of the Behavioral Activity Rating Scale (BARS) for the Brazilian population.

Introduction: Few instruments are available in Brazil to evaluate psychomotor activity in psychiatric emergency, clinical, and research settings. This study aimed to perform a cross-cultural adaptation of the Behavioral Activity Rating Scale (BARS) into Brazilian Portuguese and assess the adapted scale's psychometric properties.

Method: An expert consensus committee conducted a translation and back-translation of the original scale, resulting in the BARS-BR.

Analytical validation using a gas mixing system for the determination of gaseous formaldehyde.

Formaldehyde levels in the atmosphere are a concern in the indoor and outdoor air and many methods for determining this compound have been developed. The use of 2,4-dinitrophenylhydrazine (DNPH) for reaction with formaldehyde, catalyzed by acid, forming a hydrazone derivative in cartridges is considered the standard method for analyzing formaldehyde compounds in the air. However, formaldehyde is quantified using an analytical curve, created by diluting liquid standards of the formaldehyde-DNPH product.

Holocentric Karyotype Evolution in Is Marked by Intense Numerical, Structural, and Genome Size Changes.

Cyperaceae is a family of Monocotyledons comprised of species with holocentric chromosomes that are associated with intense dysploidy and polyploidy events. Within this family the genus has recently become the focus of several studies that characterize the organization of the holocentric karyotype and genome structures. To broaden our understanding of genome evolution in this genus, representatives of were studied to contrast chromosome features, C-CMA/DAPI band distribution and genome sizes.

Inorganic content of rock dust waste from northwest of Rio de Janeiro, Brazil: do environmental risks incur from its use as natural fertilizer?

The ornamental rock exploration and coating industry has led to significant environmental impacts due to the inadequate manner in which these residues are released into the environment. This impact may be reduced by using these residues for soil enrichment, as they contain high levels of inorganic nutrients. However, some elements may be potential contaminants, thus requiring a thorough previous research before employing these substances in agriculture.

Intraosseous Schwannoma: Case Report and Review of the Literature.

Schwannoma is a benign neural sheath tumor of the soft tissue, and its intraosseous presentation is very rare. It is estimated that intraosseous schwannomas represent 0.2% of all bone tumors.

Relationship between the biomechanical properties of the cornea and anterior segment measurements.

Objective: To evaluate the relationship of biomechanical properties, corneal hysteresis and corneal resistance factor with age, sex and various corneal parameters measured with a Pentacam in normal subjects.

Methods: A total of 226 eyes from 113 patients were enrolled in this study. The subjects underwent Ocular Response Analyzer and Pentacam evaluations.

Suspected melanoma only when the lesion is greater than 6mm may harm patients.

Objective: To analyze the distribution of larger diameter in the pathological report of cutaneous melanoma patients.

Methods: Data were obtained from patients seen from 1994 to 2015. Date, sex, age, maximum diameter, histological subtype, primary site, microscopic thickness, mitoses, ulceration, vertical growth phase, and regression were the variables studied.

E-learning program for medical students in dermatology.

Introduction: Dermatological disorders are common in medical practice. In medical school, however, the time devoted to teaching dermatology is usually very limited. Therefore, online educational systems have increasingly been used in medical education settings to enhance exposure to dermatology.

Oculometric parameters of hyperopia in children with esotropic amblyopia.

Purpose: To study the oculometric parameters of hyperopia in children with esotropic amblyopia, comparing amblyopic eyes with fellow eyes.

Methods: Thirty-seven patients (5-8 years old) with bilateral hyperopia and esotropic amblyopia underwent a comprehensive ophthalmic examination, including cycloplegic refraction, keratometry and A-scan ultrasonography. Anterior chamber depth, lens thickness, vitreous chamber depth and total axial length were recorded.

Evaluation of machine learning classifiers in keratoconus detection from orbscan II examinations.

Purpose: To evaluate the performance of support vector machine, multi-layer perceptron and radial basis function neural network as auxiliary tools to identify keratoconus from Orbscan II maps.

Methods: A total of 318 maps were selected and classified into four categories: normal (n = 172), astigmatism (n = 89), keratoconus (n = 46) and photorefractive keratectomy (n = 11). For each map, 11 attributes were obtained or calculated from data provided by the Orbscan II.

Chlorambucil and cyclosporine A in Brazilian patients with Behçet's disease uveitis: a retrospective study.

Purpose: To assess the efficacy and side effects of immunosuppressive therapy in patients with Behçet's disease uveitis.

Methods: A nonrandomized retrospective case-series study analyzed data from 22 patients with Behçet's disease uveitis, from a single Uveitis Service, São Paulo, Brazil (period 1978-2007), under systemic chlorambucil and/or cyclosporine A, for at least 6 months with a minimum one-year follow-up. Drug efficacy was measured by reduction in relapse rate and reduction of prednisone dose.

[Teledermatology: diagnostic correlation in a primary care service].

Background: Telemedicine can be defined as the use of telecommunication technologies for the transmission of health data. It has been described in different medical specialties, especially those in which interpretation of images represents a fundamental key in formulating diagnosis.

Objective: To evaluate the role of teledermatology in primary care system.

[Generalized eruptive syringoma: case report].

Syringomas are benign adnexal tumors derived from the intraepidermal portion of eccrine sweat ducts. Clinically, they usually appear as small yellow or skin-colored papules ranging from 1-3 mm in diameter on the lower eyelids. The condition of eruptive syringomas is a clinically distinct, uncommon variant of syringomas.

[Detection of keratoconus based on a neural network with Orbscan].

Purpose: To evaluate an artificial neural network in order to correctly identify Orbscan II tests of patients with normal and keratoconus corneas.

Methods: A retrospective analysis included 98 Orbscan II tests of 59 subjects and an artificial neural network was created and trained based on the Java Neural Network 1.1 software.

[Contact lens-associated ocular anterior segment diseases].

Nowadays, contact lenses have shown a larger variety of options in order to meet the needs of different patients. They have become more frequent in the clinical practice and, consequently, the complications related to contact lenses have been more common. This review attempted to describe the main alterations and diseases of the cornea and anterior segment associated with contact lens wearers.

Disseminated toxoplasmosis presenting as sepsis in two AIDS patients.

This report describes two patients who presented acute disseminated and severe toxoplasmosis as the first opportunistic disease related to acquired immunodeficiency syndrome. At admission, clinical and laboratory findings were similar to sepsis or septic shock and a fast evolutive course to death occurred in both cases. At necropsy, an inflammatory reaction and presence of a great number of Toxoplasma gondii cysts and tachyzoites were observed in most organs examined.

[Cogan's Syndrome: case report].

Non-luetic interstitial keratitis, deafness and vertigo characterize Cogan's syndrome. The most common ocular findings in early Cogan's syndrome are bilateral, peripheral, subepithelial numular corneal opacities. The report presents a patient with the evolution of the classic form of Cogan's syndrome.

Bilateral occipital infarcts associated with carotid atherosclerosis and a persistent hypoglossal artery.

The persistent hypoglossal artery (PHA) is the second most common persistent embryological carotid-basilar connection and usually represents an incidental finding in cerebral arteriograms. The hypoglossal artery connects the primordial carotid artery with the longitudinal neural arteries, which later form the basilar artery. The PHA leaves the internal carotid artery as an extracranial branch, enters the skull through the anterior condyloid foramen, the hypoglossal canal and joins the caudal portion of the basilar artery.

[Palpebral cryptococcosis: case report].

This paper is about a patient with acquired immunodeficiency syndrome empirically treated for miliary tuberculosis. During the clinical evolution the patient presented lesions compromising the right eyelid and tarsal conjunctiva. The initial diagnostic hypothesis was ocular tuberculosis with conjunctival and eyelid involvement.

[Sensorial strabismus: a study of 191 cases].

Purpose: To evaluate the charts of patients with sensorial strabismus regarding range of different aspects, such as etiology, the type and the amount of deviation, relationship between the type of deviation and the patient's age when the disease occurred and the surgical outcome.

Methods: A retrospective analysis of data charts of 191 patients seen at the section of Ophthalmology at the University of São Paulo, from September 1990 to July 2002.

Results: There were 84 male and 107 female patients.

[Clinical and laboratory aspects of acute bacterial meningitis in infants].

Objective: to describe clinical and laboratorial characteristics of acute bacterial meningitis in infants.

Method: data from the prospective follow-up of infants with acute bacterial meningitis, admitted at the Hospital Couto Maia between March and December 1997, were analyzed with specific statistical software.

Results: acute bacterial meningitis was more prevalent in infants with ages varying from 6 months to 1 year.