Breast cancer with choriocarcinomatous features

This report describes the case of a 45 year-old patient with breast carcinoma characterized by choriocarcinomatous features, presence of bizarre anaplastic cells with areas of necrosis and multinucleated giant cells. The immuno-histochemical analysis showed positivity for chromogranin and β-HCG. The tumor size was 5.7 cm at the largest axis and it was refractory to initial neo-adjuvant treatment. Mastectomy was performed and after microscopic and immuno-histochemical examination it was diagnosed as carcinoma with choriocarcinomatous features. These lesions are rare and liable to synthesize hormonal substances not specific to breast tissue. Its diagnosis is highly significant to the therapeutic and prognostic approach insofar as these lesions are potentially aggressive.O presente relato descreve um caso de carcinoma mamário em paciente de 45 anos, com diferenciação coriocarcinomatosa, caracterizado por presença de células bizarras, anaplásicas, com áreas de necrose e células gigantes multinucleadas, com imunopositividade para a subunidade β da gonadotrofina coriônica humana (β-HCG) e cromogranina, medindo 5,7 cm no maior eixo, refratário ao tratamento neoadjuvante inicial. Realizada mastectomia, cujo diagnóstico após análises microscópica e imuno-histoquímica concluiu tratar-se de carcinoma com características coriocarcinomatosas. Tais lesões são raras, capazes de sintetizar substâncias hormonais não próprias ao tecido mamário, sendo o diagnóstico de grande importância para a abordagem terapêutica e prognóstica, pois constituem um grupo de lesões potencialmente agressivas.Faculdade de Medicina do ABC Serviço de Patologia da MamaFMABCUniversidade Federal de São Paulo (UNIFESP)UNIFESPFMABC Laboratório de Análises ClínicasUNIFESP, EPM, São Paulo, BrazilSciEL

Experimental Investigation of the Coprecipitation Method: An Approach to Obtain Magnetite and Maghemite Nanoparticles with Improved Properties

Iron oxides that exhibit magnetic properties have been widely studied not only from an academic standpoint, but also for numerous applications in different fields of knowledge, such as biomedical and technological research. In this work, magnetite and maghemite nanoparticles were synthesized by chemical coprecipitation of FeCl2·4H2O and FeCl3·6H2O (proportion of 1 : 2) in three different cases using two bases (sodium hydroxide and hydroxide ammonium) as precipitants. The chemical coprecipitation method was selected for its simplicity, convenience, reproducibility, and low cost in the use of glassware. The nanostructured materials were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and magnetometry (VSM). The objective of this work is to study the variation in the morphological characteristics and physical properties of nanoparticles magnetic as a function of the different production processes. As observed by TEM, the materials obtained from the precipitating agent NH4OH are more uniform than those obtained with NaOH. From XRD pattern analysis, it appears that the obtained materials correspond to magnetite and maghemite and, from magnetometry VSM analysis, show high magnetization as a function of the magnetic field at room temperature, indicating that these materials are superparamagnetic

Breast cancer with choriocarcinomatous features

This report describes the case of a 45 year-old patient with breast carcinoma characterized by choriocarcinomatous features, presence of bizarre anaplastic cells with areas of necrosis and multinucleated giant cells. The immuno-histochemical analysis showed positivity for chromogranin and β-HCG. The tumor size was 5.7 cm at the largest axis and it was refractory to initial neo-adjuvant treatment. Mastectomy was performed and after microscopic and immuno-histochemical examination it was diagnosed as carcinoma with choriocarcinomatous features. These lesions are rare and liable to synthesize hormonal substances not specific to breast tissue. Its diagnosis is highly significant to the therapeutic and prognostic approach insofar as these lesions are potentially aggressive.O presente relato descreve um caso de carcinoma mamário em paciente de 45 anos, com diferenciação coriocarcinomatosa, caracterizado por presença de células bizarras, anaplásicas, com áreas de necrose e células gigantes multinucleadas, com imunopositividade para a subunidade β da gonadotrofina coriônica humana (β-HCG) e cromogranina, medindo 5,7 cm no maior eixo, refratário ao tratamento neoadjuvante inicial. Realizada mastectomia, cujo diagnóstico após análises microscópica e imuno-histoquímica concluiu tratar-se de carcinoma com características coriocarcinomatosas. Tais lesões são raras, capazes de sintetizar substâncias hormonais não próprias ao tecido mamário, sendo o diagnóstico de grande importância para a abordagem terapêutica e prognóstica, pois constituem um grupo de lesões potencialmente agressivas

Prisons as Reservoir for Community Transmission of Tuberculosis, Brazil

Submitted by sandra infurna ([email protected]) on 2016-05-10T11:05:00Z No. of bitstreams: 1 philip_suffys_etal_IOC_2015.pdf: 406891 bytes, checksum: 7c0d79ca185784c81644c3e2a6672707 (MD5)Approved for entry into archive by sandra infurna ([email protected]) on 2016-05-10T11:21:02Z (GMT) No. of bitstreams: 1 philip_suffys_etal_IOC_2015.pdf: 406891 bytes, checksum: 7c0d79ca185784c81644c3e2a6672707 (MD5)Made available in DSpace on 2016-05-10T11:21:02Z (GMT). No. of bitstreams: 1 philip_suffys_etal_IOC_2015.pdf: 406891 bytes, checksum: 7c0d79ca185784c81644c3e2a6672707 (MD5) Previous issue date: 2015Universidade Federal de Grande Dourados. Dourados, MS, Brasil.Universidade Federal de Grande Dourados. Dourados, MS, Brasil.Universidade Federal de Grande Dourados. Dourados, MS, Brasil.Instituto Adolfo Lutz. São Paulo, SP, Brasil.Instituto Adolfo Lutz. São Paulo, SP, Brasil.Universidade Federal de Grande Dourados. Dourados, MS, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Yale University School of Public Health. New Haven, Connecticut, USA.Stanford University School of Medicine. Stanford, California, USA.Universidade Federal de Grande Dourados. Dourados, MS, Brasil.We conducted a population-based study of tuberculosis (TB) cases in Dourados, Brazil, to assess the relationship between incarceration and TB in the general population. Incarceration was associated with TB in an urban population; 54% of Mycobacterium tuberculosis strains were related to strains from persons in prisons. TB control in prisons is critical for reducing disease prevalence

S100B PROTEIN LEVELS IN SALIVA: CORRELATION WITH GESTATIONAL AGE IN NORMAL TERM AND PRETERM NEWBORNS

OBJECTIVES: S100B is an acidic calcium-binding protein of the EF-hand family present in the central nervous system, where it is concentrated in glial cells. It has been suggested to act as a cytokine with neurotrophic effects at physiological concentrations. DESIGN AND METHODS: S100B concentration was assessed in saliva by western blot analysis and an immunoluminometric assay. A reference curve of the protein was established in 216 preterm and term newborns. RESULTS: S100B levels were significantly higher in saliva taken from the preterm group, and the highest S100B levels were found in newborns who were delivered in the earlier weeks of gestation, exhibiting a progressive decrease nearer to term. S100B concentration in saliva was correlated with gestational age (r = -0.69; P < 0.001). CONCLUSIONS: The present study offers data consistent with the putative neurotrophic role of S100B and suggests the usefulness of saliva in the clinical monitoring of S100B levels

Modification of the existing maximum residue levels and setting of import tolerances for oxathiapiprolin in various commodities

Abstract In accordance with Article 6 of Regulation (EC) No 396/2005, the applicant Du Pont de Nemours GmbH submitted two requests to the competent national authority in Ireland to modify the existing EU maximum residue levels (MRLs) and to set import tolerances for oxathiapiprolin in various plant commodities in order to accommodate the intended EU uses and the authorised uses of this active substance in China, Canada and the United States. The data submitted in support of the request were found to be sufficient to derive MRL proposals for all crops under consideration, except for Brussels sprouts and peas (without pods), for which residue data were either not submitted or were insufficient to support the use. Adequate analytical methods for enforcement are available to control the residues of oxathiapiprolin in commodities under consideration at the validated limit of quantification (LOQ) of 0.01 mg/kg. Based on the risk assessment results, EFSA concluded that, taking into account the existing and the intended uses, the long‐term intake of residues of oxathiapiprolin is unlikely to present a risk to consumer health

Modification of the existing maximum residue level for fosetyl/phosphonic acid for potatoes and wheat

Abstract In accordance with Article 6 of Regulation (EC) No 396/2005, the applicants Luxembourg Industries (Pamol) Ltd and De Sangosse SAS submitted a request to the competent national authority in France to modify the existing maximum residue level (MRL) for fosetyl/phosphonic acid related to the use of potassium phosphonates on potatoes, wheat and some animal commodities. The data submitted in support of the request were found to be sufficient to derive MRL proposals for the crops under assessments and for animal commodities. Adequate analytical methods for enforcement are available to control the residues of phosphonic acid on the commodities under consideration at the validated limit of quantification (LOQ) of 0.01 mg/kg for high water‐ and dry matrices and at LOQ of 0.1 mg/kg in high acid matrices and in animal matrices and eggs at the validated LOQ of 0.05 mg/kg and in milk at the validated LOQ of 0.01 mg/kg. Based on the risk assessment results, EFSA concluded that the intake of residues resulting from the use of potassium phosphonates according to the reported agricultural practices is unlikely to present a risk to consumers

Review of the existing maximum residue levels for clethodim according to Article 12 of Regulation (EC) No 396/2005

Abstract According to Article 12 of Regulation (EC) No 396/2005, EFSA has reviewed the maximum residue levels (MRLs) currently established at European level for the pesticide active substance clethodim. To assess the occurrence of clethodim residues in plants, processed commodities, rotational crops and livestock, EFSA considered the conclusions derived in the framework of Directive 91/414/EEC, the MRLs established by the Codex Alimentarius Commission and European authorisations reported by Member States (including the supporting residues data). Based on the assessment of the available data, MRL could not be proposed because an overall consumer risk assessment could not be finalised. Risk managers should be made aware that the genotoxic potential of the clethodim metabolite 3‐chloroallyl alcohol, the aglycon of 3‐chlorolallyl alcohol glucoside (M14A/M15A) could not be concluded and no toxicological reference values could be derived for this metabolite. Until a conclusion on the toxicological properties of the metabolite is reached, a decision on the residue definition for risk assessment cannot be made which is a prerequisite to perform a reliable dietary risk assessment