Molecular typing of Staphylococcus aureus clinical isolates by pulsed-field gel electrophoresis, staphylococcal cassette chromosome mec type determination and dissemination of antibiotic resistance genes.

Pulsed-field gel electrophoresis (PFGE) of SmaI macrorestriction fragments of genomic DNA as well as staphylococcal cassette chromosome mec (SCCmec) typing for mecA-carrying isolates were used to study the distribution of clonal types among 177 Staphylococcus aureus clinical isolates recovered in a Spanish hospital between 2000 and 2003. Five major clonal types (P1 to P5) were identified by PFGE, with one of them (P1) comprising the majority of strains (47.5%).

Molecular epidemiology of macrolide and tetracycline resistances in commensal Gemella sp. isolates.

The epidemiologic relatedness of 29 erythromycin-resistant Gemella sp. strains from normal flora, characterized previously, were evaluated by pulsed-field gel electrophoresis (PFGE). Three isolates carried the tet(O) gene and the tet(M) gene.

Phoradendron liga (Gill. ex H. et A.) Eichl. (Viscaceae) used in folk medicine: anatomical, phytochemical, and immunochemical studies.

Phoradendron liga (Gill. ex H. et A.

[Infections caused by Varicella Zoster virus in children with cancer aged less than 15 years old].

Background: Infections caused by Varicella Zoster virus in children with cancer have a high rate of complications and mortality.

Aim: To report the outcome of this infection in children with cancer.

Patients And Methods: Retrospective analysis of medical records of 216 children aged less than 15 years old with the diagnosis of an hematological or solid tumor, admitted to the National Program of Antineoplastic Drugs (PINDA).

[Hepatitis C virus in a group of hematological and oncohematological patients].

Background: Little information is available in Chile about hepatitis C virus (HCV) in hematological and oncohematological patients.

Aim: To evaluate the prevalence of hepatitis C virus markers in a group of hematological and oncohematological pediatric patients seen at Valdivia Regional Hospital.

Patients And Methods: Antibodies against virus C, determined by ELISA and viral RNA, determined using RT-polymerase chain reaction, were measured in 54 blood samples from children with hematological diseases (34 with Acute Lymphoblastic Leukaemia, 4 with Hodgkin Diseases, 4 with Haemolytic Anemia, 5 with Sarcomas, 2 with Non-Hodgkin Lymphoma, 2 with Thrombocytopenic Purpura, 1 with an Ependimoma, one with a Wilms Tumor and 1 with a Von Willebrand Disease).

Improved outcome for acute lymphoblastic leukemia in children of a developing country: results of the Chilean National Trial PINDA 87.

Background: The National Chilean Pediatric Oncology Group, PINDA, reports the first prospective, nonrandomized trial for acute lymphoblastic leukemia (ALL), using a modified version of the Berlin-Frankfurt-Munster protocol (ALL BFM 86). The aim of this study was to classify immunophenotypes, to decrease cranial irradiation, and to assess whether this protocol would improve the survival rate.

Procedure: From June, 1987, to June, 1992, 444 unselected children were diagnosed with ALL.

Multimodal therapy for children and adolescents with Ewing sarcoma: results of the First National Chilean Trial (1986-1991).

Thirty-seven patients with Ewing sarcoma were treated in the First National Chilean Trial for Ewing's Sarcoma (1986-1991), which comprised the St. Jude Ewing's 78 Study. All patients received cyclophosphamide, doxorubicin, vincristine, and Dactinomycin for a total treatment period of about 10 months, and all prescribed therapy was administered.

[Hodgkin's disease in children. Modified COPP combined treatment and radiotherapy in advanced stages].

Twenty two children, under 15 years of age, from southern Chile's Tenth Region, with advanced stages of Hodgkin's disease (8 III-A, 6 III-B and 8 IV-B) were treated with chemotherapy (modified COPP protocol) and radiotherapy between 1976 and 1985 at Valdivia's Regional Hospital. Overall survival rate was 77.3% and disease-free survival rate was 64.

[Varicella-zoster virus infection in children with Hodgkin's disease in advanced stages III and IV].

Over a 10-year period, among 22 children with Hodgkin's disease (stages III and IV), 10 (45.5%) developed varicella-zoster virus (VZV) infection, varicella in 8 cases (36.4%) and herpes zoster (HZ) in 3 (13.

[Von Willebrand's disease in the IX Region of Chile].

Bleeding disorders are frequent indications for reference to Hematologic Clinics. Won Willebrand's disease (vWD) is one of the commonest of inheritable hemorrhagic diathesis. In order to evaluate the frequency and clinical characteristics of vWD in the IX Region of Chile, we performed a clinical and laboratory investigation in 132 patients, children and adults, over a period of 3 years: 1983-1985.

[Transient idiopathic periosteal hyperostosis with hyperproteinemia (Goldbloom syndrome)].

The case of a 13 year old girl is presented, who developed intense pain in extremities and experienced marked weight loss after an acute upper respiratory tract infection. Roentgenograms revealed a diffuse periosteal reaction, most intensely affecting long bones. Principal laboratory findings were a slight normocytic, normochromic anemia; high erythrocyte sedimentation rate; medullar plasmocytosis and dysproteinemia, with a large increase in plasma gammaglobulin concentration.