Toxicity of ionic liquids prepared from biomaterials.

In search of environmentally-friendly ionic liquids (ILs), 14 were prepared based on the imidazolium, pyridinium and choline cations, with bromide and several amino acids as anions. Good yields were obtained in the synthesis of pyridinium ILs and those prepared from choline and amino acids. Four of the ILs synthesized from choline and the amino acids arginine, glutamine, glutamic acid and cystine are described here for the first time. The toxicity of the synthesized ILs was checked against organisms of various levels of organization: the crustacean Artemia salina; Human cell HeLa (cervical carcinoma); and bacteria with different types of cell wall, Bacillus subtilis and Escherichia coli. The toxicity was observed to depend on both the cation and anion. Choline-amino acid ILs showed a remarkable low toxicity to A. salina and HeLa cell culture, ten times less than imidazolium and pyridinium ILs. None of ionic liquids exhibited marked toxicity to bacteria, and the effect was 2-3 orders of magnitude smaller than that of the antibiotic chloramphenicol.

Efeito da temperatura e do tempo de armazenamento de amostras de leite cru nos resultados das análises eletrônicas / Effect of temperature and time of storage of raw milk samples on eletronic analysis results

Objetivou-se com este trabalho avaliar os efeitos da temperatura e do tempo de armazenamento de amostras de leite cru refrigerado nos resultados das análises eletrônicas da qualidade do leite. Amostras de leite cru refrigerado foram coletadas de tanques de expansão de uso individual de fazendas localizadas na mesorregião Centro Goiano, no estado de Goiás, e armazenadas em quatro temperaturas diferentes (3°C, 11°C, 17°C e 25°C) durante 16 dias. Foram realizadas diariamente análises de contagem bacteriana total (CBT), contagem de células somáticas (CCS) e composição química. Os resultados obtidos foram submetidos à análise de variância em esquema de parcelas subdivididas no tempo em delineamento de blocos ao acaso, e as médias comparadas pelo teste de Duncan. Concluiu-se que as amostras destinadas à análise de CBT, adicionadas do conservante azidiol, podem ser analisadas por até 16 dias após a coleta, quando armazenadas em temperaturas de 3°C e 11°C, e por até 10 dias, quando armazenadas a 17°C. As amostras destinadas às análises de CCS e composição química, adicionadas do conservante bronopol, podem ser analisadas por até 16 dias após a coleta, quando armazenadas em temperaturas de 3°C e 11°C, e por até sete dias, quando armazenadas a 17°C.(AU)

The aim of this study was to evaluate the effects of temperature and storage time of cooled samples of raw milk on the results of milk quality electronic analysis. Refrigerated raw milk samples were collected from expansion tanks for individual use of farms located in the middle region of the state of Goiás, and stored at four different temperatures (3°C, 11°C, 17°C, and 25°C) for 16 days. Total bacterial count (TBC), somatic cell count (SCC), and chemical composition were performed daily. The results were submitted to analysis of variance in split plot design in randomized blocks, and the means were compared by Duncan test. We concluded that, when azidiol is added as preservative to samples for TBC, they can be analyzed up to 16 days after collection when stored at temperatures of 3°C and 11°C, and up to 10 days when stored at 17°C. Moreover, when bronopol is added as preservative, samples for SCC and chemical composition analysis can be stored for up to 16 days after collection when stored at temperatures of 3°C and 11°C, and for up to seven days when stored at 17°C.(AU)

[Idiopathic myelofibrosis]. / Mielofibrose idiopática.

The authors make a review of recent data in the literature and compare them to their own cases between 1983 and 1988. They analyzed eight patients with idiopathic myelofibrosis confirmed with bone marrow biopsy of the posterior iliac wrist with Jamshidi's needle. Most patients were between 55 and 60 years old (5 male and 3 female). Major symptoms were weakness and bleeding (6/8 cases), weight loss and bone distress (4/8 cases). In general, physical signs were splenomegaly and anemia (7/8 cases), hepatomegaly (5/8 cases), and jaundice (2/8 cases). Laboratory features were variable. Most cases were diagnosed in an advanced stage of the disease. Therapy with busulfan, prednisone, oxymetholone and radiotherapy of the spleen was used alone or in combination to relieve compressive abdominal symptoms. This review shows that idiopathic myelofibrosis should be included in the differential diagnosis of patients with hepatosplenomegaly and anemia.

ABO blood groups and isoagglutinins in systemic lupus erythematosus.

In 45 patients with SLE the frequency of groups B and AB exceeded that of the controls, the difference reaching the double of the standard error. The isoagglutinin titers were quite similar in the two series. There was no association of the disease with the frequency of the secretor type nor with the quantity of group substances or isoagglutinins present in saliva and urine. The isoagglutinin titers in the sera of non-secretors were low.

[Primary plasmacytic lambda chain leukemia: report of a case]. / Leucemia plasmocitária primária de cadeias lambda: relato de um caso.

A rare case of primary plasma cell leukaemia is presented as a plasmacytic dyscrasia with high number of plasma cells in peripheral blood and bone marrow, few osteolytic lesions and with cardiac and renal failure. The morphology of leukaemic cells were variable ranging from lymphoplasmacytic to differentiated plasma cells. Bence-Jones protein Lambda Chain was found in urine and serum. The patient was treated with chemotherapy (M2 protocol) with survival of 33 months.