Biofilm and Its Characteristics in Venous Ulcers.

Purpose: The aim of the study was to analyze the characteristics of the biofilm of venous ulcers in terms of location and formation and to relate the presence of the biofilm to ulcer characteristics including duration, injured area, and necrotic tissue.

Design: Descriptive clinical study.

Materials And Methods: We obtained 2 biopsy fragments (tissue samples) from 44 patients with venous ulcers treated at a public outpatient clinic in a university hospital in Belo Horizonte, Brazil.

Frequency of skin diseases in renal transplant recipients and patients with chronic kidney disease in a tertiary center: a cross-sectional study.

Background: The prevalence of chronic kidney disease (CKD) has increased in the recent decades, along with the number of patients in the terminal stages of this disease, requiring transplantation. Some skin disorders are more frequent in patients with CKD and in renal transplant recipients (RTR).

Objectives: To evaluate the frequency of skin diseases in RTR and patients with CKD receiving conservative treatment.

The use of occlusive dressings: influence on excisional wound healing in animal model.

Purpose: To analyze the influence of occlusive dressing on the healing of excisional skin wounds in mice.

Methods: Pre-clinical, comparative, and translational study. Mice were divided into three experimental groups: wounds occluded with hydrocolloid (HD) dressings, transparent polyurethane film (TF) dressings, and without occlusion (WO), monitored at three, six and 14 days, with eight animals each.

Prevalence of people with sickle cell disease and leg ulcers in Brazil: Socioeconomic and clinical overview.

Objective: To identify the prevalence of people with leg ulcers resulting from sickle cell disease, as well as to describe the clinical, social, economic, and demographic conditions of these people.

Method: Descriptive study, carried out at the Minas Gerais Hematology and Hemotherapy Center Foundation. The study population consisted of individuals over the age of 18 with a diagnosis of sickle cell disease in the State of Minas Gerais, Brazil.

Biofilm model on mice skin wounds.

Purpose: To evaluate a biofilm model of Pseudomonas aeruginosa in excisional cutaneous wound in mice.

Methods: Preclinical, translational study conducted with 64 C57BL/6 mice randomly assigned to control and intervention groups. Evaluation was on days D0, D3, D5, D7 and D10 of wound making.

Update on human papillomavirus - Part II: complementary diagnosis, treatment and prophylaxis.

In this nonsystematic review, the complementary diagnosis, treatment, prevention, and control of human papillomavirus are discussed. The histopathology is addressed regarding its indications, main findings and limitations, as a complementary diagnostic method largely used by dermatologists. Electron microscopy is briefly reviewed, along with its contribution to the accumulated knowledge on HPV, as well as the relevance of research in using this technology for future advances in diagnosis and treatment.

Update on human papilloma virus - part I: epidemiology, pathogenesis, and clinical spectrum.

Infection with human papilloma virus (HPV) is related to a great number of cutaneous and mucosal manifestations. The spectrum of HPV ranges from inapparent infections, through various clinical benign presentations including cutaneous and mucosal disease, to malignant and premalignant conditions. New HPV types are currently described in the literature; many of them are characterized as high-risk types due to their oncogenic potential.

Expression of NLRP3 inflammasome in leprosy indicates immune evasion of Mycobacterium leprae.

Background: Leprosy is an infectious-contagious disease caused by Mycobacterium leprae that remain endemic in 105 countries. This neglected disease has a wide range of clinical and histopathological manifestations that are related to the host inflammatory and immune responses. More recently, the inflammasome has assumed a relevant role in the inflammatory response against microbiological agents.

Factors associated with complex surgical wounds in breast and abdomen: a case-control observational study.

Objective: to identify factors associated with complex surgical wounds in the breasts and abdomen in outpatients.

Method: observational case-control study involving 327 patients, distributed into 160 cases (complex surgical wound) and 167 controls (simple surgical wound). Data were extracted from the medical records and a binary logistic regression model was used for analysis, considering a significance level of 5%.

Effect of Polyhexamethylene Biguanide Solution on Bacterial Load and Biofilm in Venous Leg Ulcers: A Randomized Controlled Trial.

Purpose: The purpose of this study was to investigate the effect of polyhexamethylene biguanide (PHMB) solution as a wound cleanser on bacterial load and bacterial biofilm in venous leg ulcers.

Design: Randomized controlled trial.

Subjects And Setting: The target population was adults attending the dermatology outpatient clinic of the Clinical Hospital of the Federal University of Minas Gerais, Brazil.

Lobomycosis: a therapeutic challenge.

Lobomycosis or lacaziosis is a chronic granulomatous fungal infection caused by Lacazia loboi. Most cases are restricted to tropical regions. Transmission is believed to occur through traumatic inoculation in the skin, mainly in exposed areas.

Case for diagnosis. Infective dermatitis associated with HTLV-1: differential diagnosis of atopic dermatitis.

Infective dermatitis associated with HTLV-1 (IDH) is the main cutaneous marker of HTLV-1 infection. This disease occurs primarily in children and should be differentiated from other eczemas, especially from atopic dermatitis. The largest series of IDH are from Jamaica and Brazil.

[Multibacillary leprosy in a renal recipient patient: a case report].

Leprosy is still a public health concern in Brazil, where more than 30,000 new cases are detected every year. There are few reports of this mycobacteriosis in immunosuppressed patients, despite the increasing number of solid organ transplantation and the use of post-transplant drugs in this country. The authors describe a case of multibacillary leprosy in a renal transplant recipient, detected 12 years after the procedure, and discuss the therapy, adverse effects and management of leprosy reactions in patients immunosuppressed by drugs.

Case for diagnosis. Hashimoto-Pritzker disease.

Langerhans cell histiocytosis is a rare, clinically heterogeneous disease. Since there is considerable clinical overlap among the four described variants (Hand-Schüller-Christian, eosinophilic granuloma, Letterer-Siwe and Hashimoto-Pritzker), the concept of spectral disease applies to this entity. The Hashimoto-Pritzker variant was first described in 1973.

Differential upregulation of human 2'5'OAS genes on systemic sclerosis: Detection of increased basal levels of OASL and OAS2 genes through a qPCR based assay.

2'5'OAS are template-independent RNA polymerases with antiviral activity and important to homeostasis maintenance. Here we have developed quantitative PCR (qPCR) reactions for the detection of each individual 2'5'OAS human gene and used them to evaluate these gene levels in systemic sclerosis patients cells. The method was efficient for quantification of 2'5'OAS genes on human cells after interferon (IFN) treatment, and revealed that primary cells from patients with systemic sclerosis have increased basal levels of OASL and OAS2 genes.

Basal Activation of Type I Interferons (Alpha2 and Beta) and 2'5'OAS Genes: Insights into Differential Expression Profiles of Interferon System Components in Systemic Sclerosis.

Objective. Systemic sclerosis (SSc) is a complex autoimmune disease in which interferons (IFNs) may play an essential role. We hypothesized that type I and III IFNs may be found in increased levels in patients and be responsible for SSc autoimmune status.

Do you know this syndrome?

Keratosis linearis with ichthyosis congenita and sclerosing keratoderma (KLICK) syndrome is a rare autosomal recessive skin disorder characterized by the association of diffuse, transgressive palmoplantar keratoderma with sclerodactyly, linear hyperkeratotic plaques generally located in flexures, and congenital ichthyosis. The patient is physically and mentally healthy and has no history of any problems related to teeth, nails, hair or mucous membranes. Treatment is based on the use of topical keratolytics and oral retinoids.

HTLV-1 associated myelopathy diagnosed during lepromatous leprosy reaction treatment: a case report.

Leprosy and human T cell lymphotropic virus type 1 infection are prevalent in Brazil. Coinfection by Mycobacterium leprae and HTLV-1 is reviewed and a case is reported. A 59 year-old woman was followed and HTLV-1 associated myelopathy was diagnosed during leprosy treatment.

[Juvenile hyaline fibromatosis and infantile systemic hyalinosis. Case for diagnosis].

Juvenile hyaline fibromatosis and infantile systemic hyalinosis are rare autosomal recessive disorders with onset in infancy or early childhood. Histological examination shows deposit of hyaline material in the dermis and subcutaneous tissue. Clinical features include papulonodular skin lesions, gingival hypertrophy, flexion contractures of joints, osteolytic bone lesions and stunted growth.

[Acne induced by amineptine].

We report one case of very severe acne-like lesions associated with amineptine (Survector). They were most prominent on the face and back, but were also observed on sites not affected by acne vulgaris, such as perineum, arms and legs. The lesions appeared after long-term self-medication of high doses.

Increased expression of 2'5'oligoadenylate synthetase and double-stranded RNA dependent protein kinase messenger RNAs on affected skin of systemic sclerosis patients.

Scleroderma or systemic sclerosis (SSc) is an autoimmune disorder of unknown aetiology characterized by excessive collagen synthesis and subsequent deposition on the skin and various internal organs. Interferons (IFNs) are well-known immunomodulators and inhibitors of collagen production. However, IFN therapy has been implicated in the development or exacerbation of several autoimmune diseases, including SSc.

[Dermatologic lesions in patients infected with the human T-cell lymphotropic virus type 1 (HTLV-1)].

Human T-cell Lymphotropic virus type I (HTLV-1) was the first human retrovirus described. Some time after its discovery a group of diseases were related to this virus, such as, adult T-cell leukemia lymphoma (ATLL), HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP) and HTLV-1 associated uveitis (HAU). In the nineties, HTLV-1 was associated to a severe eczema of children, called infective dermatitis (ID).