Tin speciation in the blood plasma of workers occupationally exposed in a cassiterite ore processing industry / Especiação de estanho no plasma sanguíneo de trabalhadores expostos ocupacionalmente em uma indústria de processamento de minério de cassiterita

ABSTRACT Mining is a high-risk activity due to its dangerous processes. Tin (Sn) is obtained from cassiterite ore and mining activities expose workers to the metal. Chronic exposure to Sn may cause pneumoconiosis, gastrointestinal and hematological effects, among others. This work aimed to assess the exposure of workers to tin in a cassiterite ore processing industry, using the speciation analysis in blood plasma. Twelve subjects donated the blood samples; six were occupationally exposed to Sn. Size exclusion chromatography separated proteins in blood plasma; a graphite furnace atomic absorption spectrometer determined total tin in the plasma and eluted fractions, while SDS-PAGE determined molecular masses of proteins. Tin levels in the workers' plasma were four times higher than in the reference individuals. After fractionation, the metal only appeared in the total inclusion volume, not being possible to confirm the binding of tin to proteins, which certainly modifies their functions and impair workers' health. Despite that, the work process needs to change since Sn levels in the workers' plasma pointed to metal exposure. Further works are necessary to clarify whether the metal is free or bound to small proteins in blood plasma and understand the true impact of tin on workers' health.

RESUMO A mineração é uma atividade de alto risco devido aos seus processos perigosos. O estanho (Sn) é obtido do minério de cassiterita e as atividades da mineração expõem os trabalhadores ao metal. A exposição crônica ao Sn pode causar pneumoconiose, gastrointestinal e hematológica entre outros efeitos. Este trabalho avaliou a exposição de trabalhadores ao estanho em uma indústria de processamento de minério de cassiterita, utilizando a análise de especiação no plasma sanguíneo. Doze indivíduos doaram amostras de sangue, sendo seis expostos ocupacionalmente ao Sn. A SEC separou as proteínas do plasma sanguíneo, a GFAAS determinou a concentração total de estanho no plasma sanguíneo e frações eluídas, enquanto o SDS-PAGE determinou as massas moleculares das proteínas. O plasma dos trabalhadores apresentou níveis quatro vezes maiores do que os indivíduos de referência. Após fracionamento, Sn só apareceu no volume de inclusão, não sendo possível confirmar sua ligação às proteínas. Contudo, o processo de trabalho precisa mudar, pois os níveis de Sn no plasma dos trabalhadores apontam para exposição ao metal. Outros trabalhos são necessários para esclarecer se o metal está livre ou ligado a pequenas proteínas do plasma e entender o verdadeiro impacto do estanho na saúde dos trabalhadores.

A small-scale method of sample preparation suitable for simultaneous HPLC-UV assay of capecitabine and its 5'-DFCR metabolite in mouse blood plasma

Abstract The objective of the study was to develop an easy, cheap, effective, and safe, small-scale method for sample preparation suitable for the simultaneous high-performance liquid chromatography (HPLC)-ultraviolet (UV) assay of capecitabine and its 5′-deoxy-5-fluorocytidine (5′-DFCR) metabolite in mouse blood plasma. The suitability of the proposed method of sample preparation was verified by the optimal effectiveness and efficiency achieved in the overall analytical workflow. The chromatographic separation of capecitabine and its first metabolite was performed on a Hypersil GOLD aQ column with a mobile phase consisting of 1% formic acid, methanol, and water, and run in a gradient elution mode. The absence of interfering endogenous components at the retention times of each analyte was confirmed by the chromatographic analysis of blank matrices and matrices spiked with the corresponding standards. The absence of any tactile matrix effect was also recorded. For the first time, the effect of the vacutainer's anticoagulant on the extraction efficiency of both analytes was evaluated. The method was found to be accurate, precise, and specific. The estimated mean "extraction" efficiencies were ≥90% for each analyte. The lower limit of quantitation for both capecitabine and 5′-DFCR was 0.05 μg/mL.

How to improve one-time yield in blood plasma separation / 中国输血杂志

【Objective】 To analyze the factors affecting "one-time yield" in blood plasma separation (BPS) and explore the methods to improve the rate of it. 【Methods】 The rate of "one-time yield" in BPS of 2018 was calculated and the influencing factors were analyzed. Such influencing factors as air release after leukodepletion, poor performance of leukodepletion filter, selection of blood bag barrel, cup filling method, standing time after centrifugation, separation method were improved in 2019, and the difference of the "one-time plasma yield" rate of fresh frozen plasma/frozen plasma and the centrifugal damage before and after the improvement were compared. 【Results】 After the improvement, the rate of "one-time yield" of fresh frozen and frozen plasma increased to 89% and 80%, respectively, which was significantly increased as compared with that before(P<0.05); the centrifugal damage rate decreased to 0.01%, showed no statistical significance compared with that before. 【Conclusion】 With accurate analysis of the factors affecting "one-time plasma yield", the improved method proved to be effective, the rate of "one-time yield" has been improved significantly, and the blood quality has been guaranteed.

Variation of 24 plasma amino acid metabolite levels in patients with gastric cancer / 第二军医大学学报

Objective To study whether plasma amino acid metabolites in patients with gastric cancer can be used as biomarkers for the diagnosis of gastric cancer. Methods The levels of 24 kinds of plasma amino acids were detected by ultra-high-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS), and were compared between patients with gastric cancer and normal controls, between patients with different stages of gastric cancer, and between gastric cancer patients before and after operation. Results The levels of 18 kinds of plasma amino acids including alanine (Ala), glycine (Gly) and glutamic acid (Glu) in gastric cancer patients were significantly lower than those in the normal controls, while the levels of valine (Val), arginine (Arg) and serine (Ser) were significantly higher than those in the normal controls (all P0.05); there were no significant differences in symmetric dimethylarginine (SDMA), kynurenine (Kyn) or hippuric acid (HA) levels between the two groups (P0.05). The plasma level of Arg in patients with III-stage of gastric cancer was significantly higher than that in the-Ⅱstage, while the plasma glutamine (Gln), Glu, methionine (Met) and phenylalanine (Phe) levels were significantly lower than those in the-Ⅱstage (all P0.05). The levels of plasma leucine (Leu), Arg and citrulline (Cit) in patients after operation were significantly lower than those before operation, while the plasma Gln, lysine (Lys), Glu and Phe levels were significantly higher than those before operation (all P0.05). Conclusion Amino acids metabolites in plasma of patients with gastric cancer such as Gln and Arg play important roles in the early prediction of gastric cancer.

Correlation Discussion of Blood Plasma Thromboelastography Values and Antithrombin Ⅲ Level in Children's Kawasaki Disease / 现代检验医学杂志

Objective To analyze and discuss the correlations of blood plasma thromboelastography (TEG) values and antithrombin Ⅲ (ATⅢ) level in children's Kawasaki disease (KD).Methods Selected 60 children's KD cases as well as 42 control cases as the KD group,28 children's KD cases with coronary arterial lesions (CAL) as well as 30 children's KD cases without coronary arterial lesions (NCAL) as the CAL group.All cases were archived from January 2015 to February 2017 in Beijing Children's Hospital.The blood plasma TEG parameters were detected by thromboelastography,including blood coagulation time (R),blood clotting time (K),rate of blood clotting (α angle),the maximum intensity of blood clotting (MA),coagulation comprehensive index (CI) and plasma AT Ⅲ level(detected by blood aggregation tester).Results The K (11.1±0.36 min),AT Ⅲ (90.5％ ±[19.05％) and R (5.4± 1.72 min) values were less than those in the control group (2.29±0.66 min,110.4％±10.8％ and 6.85±2.32 min,t=-6.483,-4.267,-3.205,all P＜0.05).CI (2.11±0.70),α angle (75.23°±6.97°) and MA (67.08±6.27 mm) values in the KD group were higher than those in the control group (1.90±0.40,69.65°±5.28° and 59.12±3.52 mm,t=2.339,3.235,4.265,all P＜0.05).InCALgroup,AT Ⅲ (75.5％±9.70％),R (4.40±1.27 min) and K (1.03±0.30 min) values were less than those in the NCAL group (95.6％±12.8％,5.73±1.26 min,1.21± 0.16 min,t=-5.382,-2.731,-2.483,all P＜0.05).MA (70.54± 5.17 mm),CI (2.76±0.38),and α angle (78.79°±2.56°) values in CAL group werehigher than NCAL group (64.37±4.20 mm,2.10±0.49 and 74.43°± 3.03°,t=3.286,4.369,4.759,all P＜0.05).In CAL group,it showed that AT Ⅲ level was positive correlated with R and K values (r=0.495,0.793,P＜0.05) but negative correlated with α angle,MA and CI values (r=-0.422,-0.244 and-0.236,P＜0.05).Conclusion Blood plasma TEG values and AT Ⅲ level has some correlations in children's KD according to our analysis.Combine the two test would be necessary and meaningful in the diagnosis and treatment of children's KD in the future.

The research of logistic regression model and correlations between blood plasma melatonin (MLT) and epidermal growth factor (EGF) with index of skin type of the body, cardiovascular system, biological age and adaptive capacity assessment of relatively healthy people in Uvs province / Монголын Анагаах Ухаан

BackgroundIn Mongolia scientists have been doing research about skin disease and process of aging. Howeverthere has not enough study material about skin aging process which is the key indicator of aging andhow that affect to Mongolian people.GoalMain purpose is to study correlations between main index of skin type of the body, cardiovascularsystem, biological age, epidermal growth factor and blood plasma melatonin, within the people of Uvsprovincial center as they are relatively healthy people.Material and MethodsResearch works were done using cross sectional study model in years 2015-2016, within randomlychosen 400 citizens of Ulaangom city, counted to be relatively healthy people. Research model includes41 questionnaires, examination and blood plasma samples.Basic indexes of the body, cardiovascular system and respiratory functions were chosen by biomarkers,biological age is determined by V.P.Voytenko’s 4th version method and adaptive capacity assessment isdetermined by R.M.Baevskii’s multi-repeating regression method.Main skin type parameters such as porosity, wrinkles, pigmentation, elastics and aging is determined bythe “BOOMTECH skin diagnosis” digital equipment made in the Republic of Korea.The blood plasma MLT and EGF were measured by the method of ELISA analysis ELISA made in thelaboratory of the “AVITSENNA Science and Technology center”.The study material analysis carried out an analysis using logistic regression analysis and Pearson’scorrelation coefficient with SPSS 23.0 software.ResultThere’s an inverse weak correlation between blood plasma MLT and EGF with body wealth characteristicsof Uvs province citizens. It shows that when the blood plasma MLT and EGF decreases the body weight,body height and body weight index increase tendency.In women the decrease of blood plasma MLT and EGF also decreases the body height and body weightindex.Research on correlation between cardiovascular system and blood plasma MLT and EGF shows thatdecrease of blood plasma MLT causes in increased arterial pressures in both sexual groups, decreasedEGF in women causes decreased arterial pressure.Correlation study between skin main characteristics and blood plasma MLT and EGF shows thatdecreased blood plasma EGF in men resulted in decreased skin wrinkles, porosity, elasticity and skin aging index, in women decreased skin pigmentation and elasticity, and increased skin wrinkles, porosity and aging index in women.Research study of correlation between biological age and adaptive capacity assessment with the blood plasma MLT and EGF shows that decreased MLT and EGF in men results in increased biological age characteristics. In other words, the early aging is caused.The logistical regression analyses made using blood plasma melatonin, skin porosity, biological age,body height and sex as the risk parameters of Pearson coefficient and chi-squared parameter. Above model resulted in skin porosity and blood plasma MLT’s are becoming independent variable assessing the skin aging.Conclusions:1. The decreased MLT and EGF’s are resulted in increased body weight, body height and body weight index in men and decreased body height, body weight index in women.2. Decreased blood plasma MLT resulted in increased arterial pressure in both sexual groups and decreased EGF resulted in decreased arterial pressure in women.3. The decreased blood plasma MLT and EGF results in decreased skin wrinkles, porosity, elasticityand skin aging parameter with the increased skin pigmentation in men, as it results in decreasedskin pigmentation, elasticity and skin porosity parameters with the increased skin aging degree in women.4. When epidermal growth factor and blood plasma melatonin is decreased in men it results in increased biological age, but depends directly to the adaptive capacity assessment.5. Skin porosity and blood plasma melatonin were becoming independent variable to assess skin aging.

Biochemical characterization of blood plasma of coronary artery disease patients by in vitro high-resolution proton NMR spectroscopy.

This study aimed to investigate the biochemical profile of blood plasma of patients with coronary artery disease (CAD) and angiographically normal subjects (controls) to determine biomarkers for their differentiation. In this double blind study, 5 mL venous blood was drawn before angiography from CAD patients (n=60) and controls (n=13) comprising angiography normal individuals. In vitro high-resolution NMR spectroscopy of these blood plasma samples was carried out at 400 MHz, and intensity data were analysed with partial least square discriminant analysis. Categorization of subjects as controls or CAD patients and the patients further as single vessel disease (SVD), double vessel disease (DVD) and triple vessel disease (TVD) was done at the end of the study based on their angiography reports. Raised levels of lipids, alanine (Ala) and isoleucine/leucine/valine (Ile/Leu/Val) were observed in CAD patients compared with controls. Partial least square discriminant analysis showed separation between controls vs CAD patients. TVD patients showed increased levels of Ile/Leu/Val and Ala compared with controls and SVD. Alanine, Ile/Leu/Val, and LDL/VLDL appear as possible biomarkers for distinguishing between controls and patients with SVD and TVD. A metabolic adaptation of myocardium may play a role in raising the Ala level.

Hypobaric hypoxia-mediated protein expression in plasma of susceptible & tolerant rats.

Background & objectives: Low availability of oxygen at high altitudes has a great impact on the human life processes. There is a widespread interest and need to find out protein(s) that are possibly involved in mediating tolerance to hypobaric hypoxia. We undertook this study to identify and characterize protein expression in plasma of hypoxia susceptible and tolerant rats. Methods: Male albino Sprague Dawley rats were segregated into susceptible and tolerant groups on the basis of their gasping time when exposed to simulated hypobaric hypoxia of 32,000 ft (9,754 m) at 32ºC. Comparative proteome profiling of blood plasma of hypoxia susceptible and tolerant individuals was performed using 2-dimentional (2-D) gel electrophoresis. Results: Three proteins with higher expression levels were selected separately from tolerant and susceptible samples. Characterization of these proteins from tolerant sample using MALDI-TOF/TOF and MASCOT search indicated their homology with two different super-families viz. NADB-Rossmann superfamily (Rab GDP dissociation inhibitor β) and Transferrin superfamily (two Serotransferrins), having potential role in imparting tolerance against hypoxia. Three high level upregulated proteins were characterized from blood plasma of hypoxia susceptible animals showing similarity with threonine tRNA ligase (mitochondrial), carbohydrate sulphotransferase 7 and aspartate tRNA ligase (cytoplasmic) that play a role in ATP binding, carbohydrate metabolism and protein biosynthesis, respectively. Interpretation & conclusions: Our results indicated that rats segregated into hypoxia sensitive and tolerant based on their gasping time showed differential expression of proteins in blood plasma. Characterization of these differentially expressed proteins will lead to better understanding of molecular responses occurring during hypoxia and subsequently development of biomarkers for categorization of hypoxia susceptible and tolerant individuals.

Preclinical investigation of the pharmacokinetics, metabolism, and protein and red blood cell binding of DRDE-07: a prophylactic agent against sulphur mustard

DRDE-07, a newly synthesized amifostine analog currently under clinical investigation in a phase I trial, is a potent antidote against sulfur mustard toxicity. The purpose of this research was to evaluate the pharmacokinetic profile of DRDE-07 in female Swiss Albino mice after a single oral dose of 400 or 600 mg/kg. The physicochemical properties of DRDE-07, including solubility, pK a, Log P, plasma protein binding and plasma/blood partitioning, were determined to support the pharmacokinetic characterization. DRDE-07 concentration was determined by an HPLC-UV method. The profile of plasma concentration versus time was analyzed using a non-compartmental model. Plasma protein binding was assessed using ultrafiltration. DRDE-07 appeared rapidly in plasma after oral administration with peak plasma levels (C max) observed in less than 15 min. There was a rapid decline in the plasma levels followed by a smaller second peak about 90 min after dosing. The plasma protein binding of DRDE-07 was found to be less than 25% at all concentrations studied. Plasma clearance of DRDE-07 is expected to be ~1.5 fold higher than the blood clearance of DRDE-07. The probable metabolite of DRDE-07 was identified as phenyl-S-ethyl amine.

The prognostic value of dynamic monitoring blood plasma colloid osmotic pressure of the danger patients / 中华急诊医学杂志

Objective To investigate clinical value of the level of arterial plasma colloid osmotic pressure (COP) in predicting the prognosis of severe patients.Methods According to the prognosis of patients,the patients were divided into survival group and death group,12 h arterial plasma COP change level in the two groups were compared.According to APACHE Ⅱ score,the patients were divided into≤25 and ＞25 group,the COP into the ICU,12 h plasma COP change were compared.The correlation of APACHE Ⅱ score and arterial lactate into ICU,12 h arterial plasma COP were analyzed by Spearman correlation analysis.Results The level of plasma COP into the ICU and 12 h levels of survival were significantly lower than those of the death group; in the APACHE Ⅱ score≤25 group,plasma COP into the ICU levels and 12 h plasma COP levels were significantly higher than those of the APACHE Ⅱ score ＞ 25 group,and 12 h COP levels were significantly higher than those of behind group (t =8.34,P ＜ 0.01),Further analysis showed that the COP level into the ICU and APACHE Ⅱ score was significantly negative correlated; 12 h COP levels and APACHE Ⅱ score was significantly negative correlated.Conclusions Dynamic monitoring of COP levels is a good indicator to determine the prognosis of patients with the danger patients,the lower plasma COP,the more severe disease and poor prognosis.

Implementación ee técnicas sencillas de remoció de proteínas mayoritarias de pplasma sanguíneo para análisis por electroforesis bidimensional (2d) / Implementatio off simple techniques for removal majority proteins from blood plasma and its posterior analysis by bi-dimensional (dd) / Electroporesis aaplicação de técnicas simples de remoçãode proteínas maajoritárias do plasma sanguíneo para sua posterior análise por eletroforese bidimensional (2d)

El plasma sanguíneo representa una de las muestras de mayor interés en el diagnóstico- pronóstico de diversas enfermedades. Sin embargo, constituye la muestra de mayor dificultad para establecer su proteoma, debido a la presencia de interferencias y proteínas abundantes que dificultan la detección de proteínas minoritarias. Con el objetivo de mejorar la resolución de las proteínas separadas por técnicas electroforéticas, se realizó una comparación de diferentes métodos de remoción de proteínas mayoritarias del plasma de pacientes con síndrome coronario agudo, usando técnicas de precipitación con sales y solventes orgánicos a diferentes concentraciones. La remoción de proteínas del plasma tratado mediante estas metodologías se verificó por análisis proteómicos usando electroforesis de proteínas (1D-y 2D-SDS-PAGE), análisis de imágenes y técnicas de bioinformática. El análisis mostró que metodologías sencillas como el tratamiento con acetona 75% (v/v) disminuyó la concentración de albúmina, retiró las interferencias que dificultan la detección de proteínas minoritarias, aumentando la intensidad de las manchas proteicas separadas mediante electroforesis 2D, y por consiguiente, mejorando la resolución y la detección de las proteínas separadas del plasma sanguíneo.

The blood plasma samples are one of the most interesting in the diagnosis, prognosis of various diseases. However, the sample is more difficult when setting its proteome, due to the presence of interference and abundant proteins that hinder the detection of minor proteins. To improve the resolution of proteins separated by electrophoretic techniques, we compare different methods of removal of major proteins in plasma of patients with acute coronary syndrome, by using techniques of precipitation with salts and organic solvents at different concentrations. Subsequently, the removal of plasma proteins treated by these methods was verified by proteomic analysis by using protein electrophoresis (1D-and 2D-SDS-PAGE), image analysis and bioinformatics techniques. The analysis showed that simple methods such as treatment with acetone 75% (v/v) decreased the concentration of albumin, removed the interferences that hinder the detection of minor proteins, increasing the intensity of protein spots separated by 2D electrophoresis, and improving the resolution and detection of separated proteins of blood plasma.

O plasma sanguíneo representa uma das amostras de maior interesse no diagnóstico- prognóstico de diversas doenças. No entanto, constitui a amostra de maior dificuldade no momento de estabelecer o seu proteôma devido ã s interferências e ã s proteínas abundantes que dificultam a detecção de proteínas minoritárias. A fim de melhorar a resolução de proteínas separadas por técnicas eletroforéticas, comparamse diferentes métodos de remoção de proteínas majoritárias do plasma de pacientes com síndrome coronária agudo, usando técnicas de precipitação com sais e solventes orgânicos em diferentes concentrações. Posteriormente, a remoção de proteínas do plasma tratado por meio destas metodologias foi verificada a través da análise proteômica usando eletroforese de proteínas (1D e 2D SDS-PAGE), análise de imagens e técnicas de bioinformática. A análise mostrou que metodologias simples como o tratamento com acetona 75% (v/v) diminuiu a concentração de albumina, retirou as interferências que dificultavam a detecção de proteínas minoritárias, aumentando a intensidade dos spots de proteínas separados por eletroforese 2D, e melhorando a resolução e detecção das proteínas separadas do plasma sanguíneo.

Modulatory effect of pineapple peel extract on lipid peroxidation, catalase activity and hepatic biomarker levels in blood plasma of alcohol-induced oxidative stressed rats

Objective: To investigate the ability of the methanolic extract of pineapple peel to modulate alcohol-induced lipid peroxidation, changes in catalase activities and hepatic biochemical marker levels in blood plasma. Methods: Oxidative stress was induced by oral administration of ethanol (20% w/v) at a dosage of 5 mL/kg bw in rats. After 28 days of treatment, the rats were fasted overnight and sacrificed by cervical dislocation. Blood was collected with a 2 mL syringe by cardiac puncture and was centrifuged at 3000 rpm for 10 min. The plasma was analyzed to evaluate malondialdehyde (MDA), catalase activity, aspartate aminotransferase (AST), alkaline phosphatase (ALP) and alanine aminotransferase (ALT) concentrations. Results: Administration of alcohol caused a drastic increase (87.74%) in MDA level compared with the control. Pineapple peel extract significantly reduced the MDA level by 60.16% at 2.5 mL/kg bw. Rats fed alcohol only had the highest catalase activity, treatment with pineapple peel extract at 2.5 mL/kg bw however, reduced the activity. Increased AST, ALP and ALT activities were observed in rats fed alcohol only respectively, treatment with pineapple peel extract drastically reduced their activities. Conclusions: The positive modulation of lipid peroxidation, catalase activities as well as hepatic biomarker levels of blood plasma by the methanolic extract of pineapple peels under alcohol-induced oxidative stress is an indication of its protective ability in the management of alcohol-induced toxicity.

Quantification of glucosylceramide in plasma of Gaucher disease patients

Gaucher disease is a sphingolipidosis that leads to an accumulation of glucosylceramide. The objective of this study was to develop a methodology, based on the extraction, purification and quantification of glucosylceramide from blood plasma, for use in clinical research laboratories. Comparison of the glucosylceramide content in plasma from Gaucher disease patients, submitted to enzyme replacement therapy or otherwise, against that from normal individuals was also carried out. The glucosylceramide, separated from other glycosphingolipids by high performance thin layer chromatography (HPTLC) was chemically developed (CuSO4 / H3PO4) and the respective band confirmed by immunostaining (human anti-glucosylceramide antibody / peroxidase-conjugated secondary antibody). Chromatogram quantification by densitometry demonstrated that the glucosylceramide content in Gaucher disease patients was seventeen times higher than that in normal individuals, and seven times higher than that in patients on enzyme replacement therapy. The results obtained indicate that the methodology established can be used in complementary diagnosis and for treatment monitoring of Gaucher disease patients.

A doença de Gaucher é uma esfingolipidose caracterizada pelo acúmulo de glicosilceramida. O objetivo deste estudo foi desenvolver metodologia baseada na extração, purificação e quantificação da glicosilceramida plasmática a qual possa ser usada em laboratórios de pesquisa clínica. Após o desenvolvimento desta metodologia, foi proposto, também, comparar o conteúdo de glicosilceramida presente no plasma de pacientes com doença de Gaucher, submetidos ou não a tratamento, com aquele de indivíduos normais. A glicosilceramida, separada de outros glicoesfingolipídios por cromatografia de camada delgada de alto desempenho (HPTLC), foi revelada quimicamente (CuSO4/H3PO4) e a respectiva banda foi confirmada por imunorrevelação (anticorpo anti-glicosilceramida humana/anticorpo secundário conjudado à peroxidase). A quantificação do cromatograma por densitometria demonstrou que o conteúdo de glicosilceramida nos pacientes com doença de Gaucher era 17 vezes maior que aquele de indivíduos normais e 7 vezes maior que aquele dos pacientes com doença de Gaucher submetidos a tratamento com terapia de reposição enzimática. Os resultados obtidos demonstram que a metodologia estabelecida pode ser usada como diagnóstico complementar e como monitoração do tratamento de pacientes com doença de Gaucher.

Polyherbal preparation for anti-diabetic activity: A screening study.

Objective: To screen the Polyherbal preparation for anti-diabetic activity in rats. Materials and Methods: The blood glucose lowering activity of the Polyherbal preparation-I (1:1:1 of Wheat germ oil, Coriandrum sativum and Aloe vera) was studied in normal rats after oral administration at doses of 1.0 and 2.0 ml/kg and Polyherbal preparation-I, II (Wheat germ oil, fresh juice of C. sativum and Aloe vera in the ratio of 2:2:1), and III (Wheat germ oil, fresh juice of C. sativum and Aloe vera in the ratio of 1:2:2) on alloxan-induced diabetic rats, after oral administration at doses of 1.0 and 2.0 ml/kg. Blood samples were collected from the tail vein method at 0, 0.5, 1, 2, 4, 8, 12, and 24 h in normal rats and in diabetic rats at 0, 1, 3, 7, 15, and 30 days. Blood plasma glucose was estimated by the GOD/POD (glucose oxidase and peroxidase) method. The data was compared statistically using the one-way ANOVA method followed by the Dunnett multiple component test. Statistical significance was set at P<0.05. Results: The Polyherbal preparation-I produced significant (P<0.05) reduction in the blood glucose level of normal rats and Polyherbal preparation-I, II, and III produced significant (P<0.01) reduction in the blood glucose level of diabetic rats during 30 days study and compared with that of control and Glibenclamide. Conclusion: The Polyherbal preparation-I showed a significant glucose lowering effect in normal rats and Polyherbal preparation-I, II, and III in diabetic rats. This preparation is going to be promising anti-diabetic preparation for masses; however, it requires further extensive studies in human beings.

Organic and inorganic selenium compounds produce different protein patterns in the blood plasma of rats

Some selenium compounds offer important health benefits when administered at supranutritional doses, such as improvement of the immune system and of male fertility, and the prevention of some types of cancer. The traditional selenium indexes do not account for the metabolic status of this element among replete individuals. As a consequence, there is a need for new indexes that distinguish between repletion statuses of selenium. The aim of this work was to indentify some plasmatic proteins that respond to supranutritional doses of selenium, which could be proposed as new protein markers of selenium intake. The effect on rats of dietary supplementation with either selenomethylselenocysteine (SMSeC) or sodium-selenate on some blood plasma proteins was investigated. Two experimental groups consisting of six rats each were fed a basic diet supplemented with either SMSeC or sodium-selenate at 1.9 mg-Se / g-diet for ten weeks. The control group was fed a diet that contained the recommended selenium dose (0.15 mg-Se / g-diet). The changes in the abundance of a group of plasmatic proteins were quantified and analysed statistically. Haptoglobin, apolipoprotein E and transthyretin increased their abundance after diet supplementation with either form of selenium. HNF6 was responsive only to SMSeC, whereas fibrinogen responded only to sodium-selenate. We postulate that the protein patterns observed in this work could be proposed as new molecular biology-based markers of selenium intake.

Effects of alternating magnetic field on the metabolism of the healthy and diabetic organisms

The aim of this study was to determine the effects of alternating magnetic field on the metabolism of the healthy and diabetic rats. The rats were divided into two experimental groups. Magnetic fields of 5 and 8mT intensity was applied to the first group of rats for 3 weeks (C5mT, CMF5mT, C8mT and CMF8mT). The second group was identified as diabetics group and 5mT was applied (D5mT and DMF5mT). The control groups (C5mT, C8mT, D5mT) of applied magnetic fields were placed in the same cage of the rats in experimental groups that have the same conditions but no pass current. The weights of rats exposed to magnetic fields in experimental groups were increased to initial weight; the plasma glucose levels were decreased in the blood parameters of the healthy and diabetic rats that they were exposed to 5mT and 8mT intensity magnetic fields. The decrease of the level of the total cholesterol and triglyceride in the blood plasma of the rats, showed that magnetic fields affected the hormonal systems, directly or indirectly, and slowed down the metabolism or hidratation.

Therapeutic Effect of Shenshuai Pellet on Chronic Renal Failure Patient and Its Influence on the Blood Rheology / 中国中医药信息杂志

Objective To observe the curative effect of Shenshuai Pellet on chronic renal failure patient and its influence on hemoglobin, blood plasma albumin and blood rheology. Methods 60 cases of chronic renal failure patients were randomly divided into the treatment group and control group. On the basis of high quality low-protein low-phosphorus diet, envies the vegetable protein, correction water and electrolyte balance, the acidosis and so on, the control group was treated with Oxyamyli tectus Aldehydum, the treatment group was given Shenshuai Pellet orally. Results Total effectiveness of treatment group and control group was 90% and 60% respectively. The clinical symptoms of treatment group were obviously improved. In addition, the hemoglobin, blood plasma albumin and the blood rheology of treatment group were significantly improved compared with control group (P

Ex vivo expansion of umbilical cord blood-derived T-lymphocyte with autologous cord blood plasma / 대한산부인과학회지

OBJECTIVE: The objective of this study was to establish a clinically applicable culture system by investigating the use of autologous cord blood plasma (ACBP) instead of fetal bovine serum (FBS) for the ex vivo expansion of umbilical cord blood (UCB) T-lymphocytes. METHODS: Fresh UCB mononuclear cell (MNC) fractions were isolated by Ficoll-Hypaque density centrifugation. The nonadherent MNC fractions were then cultured with the anti-CD3 antibody 5 microgram/mL plus IL-2 175 U/mL in the presence of 10% FBS, 10% ACBP or homologous cord blood plasma (HCBP). On day 8, proliferation rate, cell surface markers, cytotoxic assay of UCB T-lymphocytes according to the medium supplemented with FBS, ACBP or HCBP were evaluated. RESULTS: Proliferation studies demonstrated a significant increase in the proliferative ability of UCB T-lymphocytes incubated in anti- CD3 and IL-2 irrespective of the medium supplemented with FBS or ACBP. In the FBS supplemented medium, expressions of the activated T-lymphocytes were increased significantly after culture: CD3+CD8+, CD3+CD25+, CD3+CD38+, and CD45RO+ (p<0.05). Also in the ACBP supplemented medium, expressions of the activated T-lymphocytes were increased significantly after culture: CD3+ CD8+, CD3+CD25+, and CD45RO+ (p<0.05). In the HCBP supplemented medium, expressions of the activated T-lymphocytes were increased significantly after culture as in the ACBP: CD3+CD8+, CD3+CD25+, and CD45RO+ (p<0.05). Of the activated T-lymphocytes, increase of cytotoxic CD3+CD8+ cells increased significantly in the ACBP and HCBP groups compared to FBS group (p<0.05). CONCLUSION: These findings support the feasibility of ex vivo expansion of umbilical cord blood T-lymphocytes in the medium supplemented with autologous cord blood plasma, instead of fetal bovine serum, for future adoptive cellular immunotherapy.

Acute hypervolemic hemodilution for reducing perioperative blood use / 中国输血杂志

Objective To study the feasibility of preoperative acute hypervolemic hemodilution for decreasing perioperative blood use. Methods Thirty two patients(ASAI-II) undergoing spinal surgery were randomized into AHH group and control group. After anesthesia 6% HES(200/0.5) was given through internal jugular vein for AHH. The blood volume was increased by about 25%. During the operation, blood loss was replaced by HES in equal volume. Blood was transfused when the Hct dropped below 25%. The HR, MAP, CVP, SPO2, Hb, Hct., Plt, FIB, APTT, PT, amount of blood loss, blood transfused and urine output, volume of drainage 24h after operation and VAS score (0 means no effect, 10 means maximal effect) were observed before AHH, at the end of AHH, at the end of operation, and 24h after the operation. Blood volume expansion was calculated. Results (1) HR increased significantly in both groups(P

The Effect of Cord Blood Plasma on Hematopoietic Colony Formation / 대한소아혈액종양학회지

PURPOSE: Umbilical cord blood transplantation is a alternative method as new hematopoietic stem cell transplantation and has been performed clinically in indicated disease. However, it have the problems for long-term storage of cord blood in liquid nitrogen and for limited application to adult due to small amount of hematopoietic stem cell. Therefore, several centers have carried out active research for ex vivo expansion of cord blood stem cell. We investigated the hematopoietic function of cord blood plasma for development of new techniques. METHODS: We acquired the nucleated cells of cord blood from healthy infant and bone marrow from healthy donor received granulocyte-colony stimulating factor. We evaluated hematopoietic colony formation according to source of stem cell and plasma by semisolid culture medium. Three experimental groups were divided as source of plasma: group for cord plasma, group for bone marrow plasma, group for mixture of cord plasma and bone marrow plasma. RESULTS: The results were as follows: 1) The colony formation according to source of stem cell in commercialized standard semisolid culture medium showed that cord blood in the number of CFU-GM was less than bone marrow, but not significantly different in CFU-GEMM. 2) The colony formation according to source of stem cell in semisolid culture medium using experimental plasma showed that cord blood in the number of CFU-GM was more than bone marrow. There were no cytotoxic effect of plasma to experimental cells. 3) The colony formation in semisolid culture medium contained plasma according to experimental group showed that the number of CFU-GM in cord blood plasma was significantly more than bone marrow plasma in spite of different source of stem cell. Conclusions: These results suggested that cord blood might contain enough hematopoiesis to enable to perform transplantation compared with bone marrow and, also, cord blood plasma might be contributed more effective colony formation than bone marrow plasma. Therefore, we propose that it may be good to store cord blood cells with cord blood plasma in long-term storage. We will investigate the composition of hematopoietic growth factors and cytokines in cord blood plasma and the effect of cord blood plasma for ex vivo expansion of cord blood cells.