Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 907
Filter
1.
Braz. j. biol ; 81(3): 601-610, July-Sept. 2021. tab, graf
Article in English | LILACS | ID: biblio-1153382

ABSTRACT

Abstract The present study aimed to assess population structure and phylogenetic relationships of nine subspecies of Brassica rapa L. represented with thirty-five accessions cover a wide range of species distribution area using isozyme analysis in order to select more diverse accessions as supplementary resources that can be utilized for improvement of B. napus. Enzyme analysis resulted in detecting 14 putative polymorphic loci with 27 alleles. Mean allele frequency 0.04 (rare alleles) was observed in Cat4A and Cat4B in sub species Oleifera accession CR 2204/79 and in subspecies trilocularis accessions CR 2215/88 and CR 2244/88. The highest genetic diversity measures were observed in subspecies dichotoma, accession CR 1585/96 (the highest average of observed (H0) and expected heterozygosity (He), and number of alleles per locus (Ae)). These observations make this accession valuable genetic resource to be included in breeding programs for the improvement of oilseed B. napus. The average fixation index (F) is significantly higher than zero for the analysis accessions indicating a significant deficiency of heteozygosity. The divergence among subspecies indicated very great genetic differentiation (FST = 0.8972) which means that about 90% of genetic diversity is distributed among subspecies, while 10% of the diversity is distributed within subspecies. This coincides with low value of gene flow (Nm = 0.0287). B. rapa ssp. oleifera (turnip rape) and B. rapa ssp. trilocularis (sarson) were grouped under one cluster which coincides with the morphological classification.


Resumo O presente estudo teve como objetivo avaliar a estrutura populacional e as relações filogenéticas de nove subespécies de Brassica rapa L. representadas com 35 acessos, cobrindo uma ampla gama de áreas de distribuição de espécies usando análise isoenzimática, a fim de selecionar acessos mais diversos como recursos suplementares que podem ser utilizados para melhoria de B. napus. A análise enzimática resultou na detecção de 14 loci polimórficos putativos com 27 alelos. A frequência média de 0,04 alelo (alelos raros) foi observada em Cat4A e Cat4B, nas subespécies Oleifera CR 2204/79 e nas subespécies trilocularis CR 2215/88 e CR 2244/88. As maiores medidas de diversidade genética foram observadas na subespécie dicotômica CR 1585/96 (a média mais alta observada (H0) e heterozigosidade esperada (He) e número de alelos por locus (Ae). Essas observações tornam esse acesso um valioso recurso genético a ser incluído em programas de melhoramento de oleaginosas B. napus. O índice médio de fixação (F) é significativamente maior que 0 para os acessos à análise, indicando uma deficiência significativa de heterozigose. A divergência entre as subespécies indicou uma grande diferenciação genética (FST = 0,8972), o que significa que cerca de 90% da diversidade genética é distribuída entre as subespécies, enquanto 10% da diversidade é distribuída nas subespécies. Isso coincide com o baixo valor do fluxo gênico (Nm = 0,0287). B. rapa ssp. oleifera (nabo) e B. rapa ssp. trilocularis (sarson) foram agrupados conforme a classificação morfológica.


Subject(s)
Brassica napus , Brassica rapa/genetics , Phylogeny , Genetic Variation/genetics , Plant Breeding , Isoenzymes/genetics
2.
Medicina (B.Aires) ; 81(2): 173-179, June 2021. graf
Article in English | LILACS | ID: biblio-1287268

ABSTRACT

Abstract Cardiovascular mortality (CVM) has become the major contributor to overall Fabry disease (FD) mortality in the enzyme replacement therapy (ERT) era. Our objectives were to describe causes and potential predictors of mortality in FD adult patients in Argentina, and to assess risk of major adverse cardio vascular events (MACE) in the ERT era. We retrospectively studied 93 consecutive patients treated with alpha-galactosidase A (median follow up: 9.5 years from start of ERT). Mean age at ERT starting was 35±16.3 years. Prevalence of cardiomyopathy and renal disease reached 47% and 41%, respectively. Eleven subjects (11.8%, 95%CI: 5-18%) died during follow up (1.24/100 patient-years). Mean overall survival was 71 years (95%CI: 66-75 years). Seven cases were considered as CVM; main causes were sudden death and stroke. Risk of MACE was 14% (95%CI: 6.9-21.1%; 1.47 events/100 patient-years from start of ERT). All but 2 subjects had at least one comorbid cardiovascular risk factor; however, 86% of patients remained free of MACE during follow-up. CVM remained low and our study was underpowered for detection of predictors of mortality, but it is worth noting that age at diagnosis and ERT starting, left ventricular mass index and renal disease trended to correlate with CVM. Prevalence of hypertension, diabetes and dyslipidemia were lower in FD patients when compared to population level data. As in the Argentinean general population, CVM was the leading cause of mortality among this cohort of consecutive FD patients treated with agalsidase alfa.


Resumen La mortalidad cardiovascular (MCV) se ha convertido en el principal contribuyente a la mortalidad general por enfermedad de Fabry (EF) en la era de la terapia de reemplazo enzimático (TRE). Nuestros objetivos fueron describir las causas y posibles predictores de mortalidad en pacientes adultos con EF en la Argentina, y evaluar el riesgo de eventos cardiovasculares mayores (MACE) en la actual era de TRE. Se estudiaron 93 pacientes consecutivos tratados con agalsidasa-alfa por una mediana de 9.5 años tras iniciar TRE. La edad al inicio de TRE fue 35 ± 16.3 años. La prevalencia de cardiomiopatía y enfermedad renal alcanzó 47% y 41%, respectivamente. Once sujetos (11.8%; IC95%: 5-18%) murieron durante el seguimiento (1.24/100 pacientes/año). La supervivencia global fue 71 años (IC95%: 66-75 años). Siete casos fueron considerados como MCV; las principales causas fueron muerte súbita e ictus. El riesgo de MACE fue 14% (IC95%: 6.9-21.1%; 1.47 eventos/100 pacientes/año desde la ERT). Todos menos 2 sujetos tenían al menos un factor de riesgo cardiovascular, pero el 86% permaneció libre de MACE. Los eventos de MCV fueron escasos. El estudio tuvo reducido poder estadístico para detectar predictores de mortalidad, pero la edad al diagnóstico y al iniciar la TRE, índice de masa ventricular izquierda y enfermedad renal tendieron a correlacionarse con MCV. La prevalencia de hipertensión, diabetes y dislipidemia fue menor en comparación con la población general. Como ocurre con la población general en Argentina, los eventos cardiovasculares fueron la principal causa de muerte en esta cohorte de pacientes consecutivos con EF tratados con agalsidasa-alfa.


Subject(s)
Humans , Adult , Fabry Disease/complications , Fabry Disease/drug therapy , Argentina/epidemiology , Recombinant Proteins/therapeutic use , Retrospective Studies , alpha-Galactosidase/adverse effects , Enzyme Replacement Therapy , Isoenzymes
3.
Chinese Journal of Biotechnology ; (12): 2424-2434, 2020.
Article in Chinese | WPRIM | ID: wpr-878498

ABSTRACT

This study intends to obtain recombinant proteins of ALT1 and ALT2 isozymes by using genetic recombination technology. Monoclonal antibodies ALT1 and ALT2 with high specificity and high activity were prepared and screened (ALT1 monoclonal antibody has been successfully prepared and published). The localization, distribution and expression of ALT1 and ALT2 isozymes in human tissues were discussed. The ALT2 genes were amplified from human liver cancer cell (HepG2) by RT-PCR method. The mature ALT2 gene was subcloned into the pET32a-ALT2 prokaryotic expression vector. Its ligation product was transformed into BL21(DE3) competent cells, and transformed into competent cells to express ALT2 proteins induced by IPTG. The recombinant proteins of ALT2 were purified by nickel column (Ni⁺) affinity chromatography. Balb/c mice were immunized with recombinant proteins of ALT2. Positive serum mouse spleen cells and myeloma cells SP2/0 were selected for cell fusion. The positive cell lines were selected by indirect ELISA and subcloned by limited dilution method. Affinity chromatography was used to purify ALT2 antibodies. The expression and distribution of ALT2 in human normal tissues were detected by RT-PCR and Western blotting. Results show that the expression of ALT isoenzyme in tissues was almost the same at gene mRNA level and protein level. ALT1 is highly expressed in liver, kidney and skeletal muscle, and moderately expressed in gastrointestinal smooth muscle. ALT2 is highly expressed in fat, skeletal muscle and myocardium, and is poorly expressed in gastrointestinal smooth muscle. Immunohistochemical studies show that ALT1 is highly expressed in hepatocytes, renal medullary tubules and muscle fibers, ALT2 is highly expressed in adipocytes and myocardial cells, and ALT1 and ALT2 in gastrointestinal tissues are mainly expressed in mucosa of upper intestinal wall region. The results showed that the isoenzymes ALT1 and ALT2 were mainly expressed in the mucosa of the upper part of the intestinal wall. It is widely distributed in the tissues, providing theoretical basis for understanding the mechanism of ALT activity increase under different pathological conditions.


Subject(s)
Alanine Transaminase , Animals , Cloning, Molecular , Humans , Isoenzymes/genetics , Liver , Mice , Recombinant Proteins
4.
Biosci. j. (Online) ; 35(4): 1143-1152, july/aug. 2019. tab, ilus
Article in English | LILACS | ID: biblio-1048848

ABSTRACT

The objective of this study was to evaluate the physiological quality allied to biochemical quality of lettuce seeds by germination and enzymes expression at 20, 25, 30, 35, 40 and 42ºC. Germination speed index and percentage of germination were estimated. Isoenzyme expressions were assessed by alcohol dehydrogenase (ADH), malate dehydrogenase (MDH), catalase (CAT), esterase (EST), pyruvate decarboxylase (PDC) and glutamate oxaloacetate transferase (GOT). The experiment consisted of a completely randomized design in a factorial scheme 4x6, with four cultivars and six different temperatures, with four replications. The highest germination and vigor were observed for cv. 'Everglades' at 35°C, which proved that this cultivar is thermotolerant. Catalase can be considered a genetic marker for the identification ofthermotolerant lettuce cultivars. Cultivar 'Everglades' has potential to be used in lettuce breeding programs aimed at cultivars tolerant to high temperatures during germination.


O objetivo deste estudo foi avaliar a qualidade fisiológica e bioquímica de sementes de alface por meio da germinação e expressão de enzimas a 20, 25, 30, 35, 40 e 42ºC. As variáveis velocidade de germinação e o índice de velocidade de germinação foram estimadas. As expressões das enzimas alcool desidrogenase (ADH), malato desidrogenase (MDH), catalase (CAT), esterase (EST), piruvate descarboxilase (PDC) e glutamato oxaloacetato transferase (GOT) foram avaliadas. Para análise dos genótipos foi empregado o delineamento inteiramente casualizado em esquema fatorial 4x6, testando quatro cultivares e seis diferentes temperaturas, com quatro repetições. A maior germinação e vigor foram observadas para a cv. 'Everglades' a 35°C, o que prova que esta cultivar é termotolerante. A catalase pode ser considerada um marcador para a identificação de cultivares de alface termotolerantes. A cultivar 'Everglades' tem potential para uso em programas de melhoramento visando tolerância à alta temperatura durante a germinação.


Subject(s)
Seeds , Catalase , Lettuce , Esterases , Thermotolerance , Isoenzymes , Oxidoreductases
5.
Article in English | WPRIM | ID: wpr-758989

ABSTRACT

BACKGROUND: Elevated serum alkaline phosphatase (AP) and γ-glutamyl transferase (γ-GT) are commonly observed in patients with acute pyelonephritis. The goal of this study was to examine the clinical significance of elevated serum AP and γ-GT levels and to explore the mechanisms underlying these changes. METHODS: We examined serum AP and γ-GT levels in 438 patients with acute pyelonephritis. Urine AP/creatinine (Cr), urine γ-GT/Cr, fractional excretion of AP, and fractional excretion of γ-GT (FE(γ-GT)) were evaluated in patients with elevated and normal serum levels. AP isoenzymes were also examined. RESULTS: We identified 77 patients (17.6%) with elevated serum AP and 134 patients (30.6%) with elevated serum γ-GT. Among them, both enzymes were elevated in 64 patients (14.6%). Older age, longer hospital stay, elevated baseline serum Cr, and complicated pyelonephritis were associated with increases in serum AP and γ-GT. Multivariate analysis showed that high serum AP levels were significantly correlated with renal impairment (odds ratio, 2.13; 95% confidence interval, 1.08–4.19; P = 0.029). FE(γ-GT) was significantly lower in patients with elevated serum enzyme levels. The liver fraction for AP isoenzyme profile did not increase in patients with elevated serum AP. CONCLUSION: Our results demonstrated that elevated serum AP and γ-GT levels are associated with complicated pyelonephritis and renal impairment. Lower FE(γ-GT) levels in patients with elevated serum enzymes may be the result of decreased urinary excretion of these enzymes.


Subject(s)
Alkaline Phosphatase , gamma-Glutamyltransferase , Humans , Isoenzymes , Length of Stay , Liver , Multivariate Analysis , Pyelonephritis , Transferases
6.
Int. j. odontostomatol. (Print) ; 12(3): 225-227, Sept. 2018. tab
Article in English | LILACS | ID: biblio-975737

ABSTRACT

ABSTRACT: Pain is a major symptom in many dental procedures. Studies show consistently that pain, including dental pain, is not effectively treated; management of pain is a critical and challenging component in dentistry. Improvement and efficacy on the treatment depends on knowing which treatments are the most effective. Knowing how well an analgesic works and its associated adverse effects is fundamental to clinical decision. The aim of this review is to provide information to the dentistry field on the treatment of dental pain specifically with COX-2 inhibitors providing a useful guide to dentist on controlling pain. Therefore, nonsteroidal anti-inflammatory drugs (NSAIDs) are the most commonly prescribed analgesic agents in surgical outpatients. Major limitations of NSAIDs are their gastrointestinal (GI) adverse events (perforation, ulceration, and bleeding), impairment of hemostatic function, and renal failure (with long-term therapy). A new class of NSAIDs, COX2 selective inhibitors (Coxibs), have been developed with the aim of reducing the GI adverse events of traditional NSAIDs while maintaining their effective anti-inflammatory and analgesic properties.


RESUMEN: El dolor es un síntoma principal en muchos procedimientos dentales. Los estudios demuestran consistentemente que el dolor, incluido el dolor dental, no se trata de manera efectiva; el manejo del dolor es un componente crítico y desafiante en odontología. La mejora y la eficacia en el tratamiento depende de saber qué tratamientos son los más efectivos. Saber qué tan bien funciona un analgésico y sus efectos adversos asociados es fundamental para la decisión clínica. El objetivo de esta revisión es proporcionar información al campo de la odontología sobre el tratamiento del dolor dental específicamente con los inhibidores de la COX-2, proporcionando una guía útil para el control del dolor por parte del dentista. Por lo tanto, los fármacos antiinflamatorios no esteroideos (AINE) son los agentes analgésicos más comúnmente prescritos en pacientes ambulatorios quirúrgicos. Las principales limitaciones de los AINE son los eventos adversos gastrointestinales (perforación, ulceración y hemorragia), deterioro de la función hemostática e insuficiencia renal (con terapia a largo plazo). Una nueva clase de AINE, los inhibidores selectivos de la COX-2 (Coxibs), se han desarrollado con el objetivo de reducir los eventos adversos gastrointestinales de los AINE tradicionales mientras se mantienen sus propiedades antiinflamatorias y analgésicas efectivas.


Subject(s)
Humans , Palliative Care/methods , Cyclooxygenase Inhibitors/therapeutic use , Isoenzymes/antagonists & inhibitors , Pain/etiology , Pain/drug therapy , Tooth Extraction/adverse effects , Cyclooxygenase 2 , Cyclooxygenase 2 Inhibitors
7.
Electron. j. biotechnol ; 34: 83-90, july. 2018. tab, ilus, graf
Article in English | LILACS | ID: biblio-1047375

ABSTRACT

Background: Although the functional redundancy of catechol 1,2-dioxygenase (C12O) genes has been reported in several microorganisms, limited enzymes were characterised, let alone the advantage of the coexistence of the multiple copies of C12O genes. Results: In this study, four novel C12O genes, designated catA, catAI, catAII and catAIII, in the naphthalene-degrading strain Pseudomonas putida ND6, were cloned and characterised. Phylogenetic analysis of their deduced amino acid sequences revealed that the four C12O isozymes each formed independent subtrees, together with homologues from other organisms. All four enzymes exhibited maximum activity at pH 7.4 and higher activity in alkaline than in acidic conditions. Furthermore, CatA, CatAI and CatAIII were maximally active at a temperature of 45°C, whereas a higher optimum temperature was observed for CatAII at a temperature of 50°C. CatAI exhibited superior temperature stability compared with the other three C12O isozymes, and kinetic analysis indicated similar enzyme activities for CatA, CatAI and CatAII, whereas that of CatAIII was lower. Significantly, among metal ions tested, only Cu2+ substantially inhibited the activity of these C12O isozymes, thus indicating that they have potential to facilitate bioremediation in environments polluted with aromatics in the presence of metals. Moreover, gene expression analysis at the mRNA level and determination of enzyme activity clearly indicated that the redundancy of the catA genes has increased the levels of C12O. Conclusion: The results clearly imply that the redundancy of catA genes increases the available amount of C12O in P. putida ND6, which would be beneficial for survival in challenging environments.


Subject(s)
Pseudomonas putida/enzymology , Pseudomonas putida/genetics , Catechol 1,2-Dioxygenase/genetics , Temperature , Biodegradation, Environmental , Cloning, Molecular , Catechol 1,2-Dioxygenase/analysis , Catechol 1,2-Dioxygenase/metabolism , Genes, Bacterial , Hydrogen-Ion Concentration , Isoenzymes , Metals
8.
J. appl. oral sci ; 26: e20170141, 2018. graf
Article in English | LILACS, BBO | ID: biblio-893685

ABSTRACT

Abstract Objective Staphylococcus aureus strains can be disseminated during dental treatments and occasionally lead to the contamination and infection of patients and dentists, which is an important public health problem. The dynamics of the airborne propagation and the genetic diversity of S. aureus isolated in an academic dental clinic environment were investigated using isoenzyme typing. Material and Methods The isoenzymes of 44 previously reported isolates were obtained from fresh cultures and extracted using glass beads. Nine isoenzymes were investigated using multilocus enzyme electrophoresis (MLEE). The genetic diversity and relationship among the strains (electrophoretic type - ET) were determined using statistics previously described by Nei25 (1972) and the SAHN grouping method (UPGMA algorithm). Results Clonal pattern analyses indicated a high level of genetic polymorphism occurring among the 33 ETs, which were grouped into five taxa. Each taxon presented one or more clusters that were moderately related and that contained two or more identical/highly related isolates, revealing seasonal airborne propagation in these dental clinic environments. Conclusions These data suggest the occurrence of active microevolutionary processes in S. aureus as well as the possibility of environmental propagation during a 14-month time span. Such findings are important to show that multiuser academic dental clinics can retain certain strains that are spreadable to different niches.


Subject(s)
Seasons , Staphylococcus aureus/isolation & purification , Staphylococcus aureus/genetics , Dental Clinics/statistics & numerical data , Polymorphism, Genetic , Reference Values , Staphylococcal Infections/microbiology , Staphylococcus aureus/enzymology , Time Factors , Genetic Variation , Cluster Analysis , Cross Infection/microbiology , Equipment Contamination , Bacterial Typing Techniques/methods , Multilocus Sequence Typing/methods , Isoenzymes/isolation & purification
9.
National Journal of Andrology ; (12): 291-296, 2018.
Article in Chinese | WPRIM | ID: wpr-689762

ABSTRACT

Human seminal plasma is rich in potential biological markers for male infertility and male reproductive system diseases, which have an application value in the diagnosis and treatment of male infertility. The methods for the detection of semen biochemical markers have been developed from the manual, semi-automatic to the present automatic means. The automatic detection of semen biochemical markers is known for its advantages of simple reagent composition and small amount of reagents for each test, simple setting of parameters, whole automatic procedure with few errors, short detection time contributive to batch detection and reduction of manpower cost, simple calibration and quality control procedure to ensure accurate and reliable results, output of results in the order of the samples in favor of clinical diagnosis and treatment, and open reagents applicable to various automatic biochemistry analyzers. At present, the automatic method is applied in the detection of such semen biochemical markers as seminal plasma total and neutral alpha-glucosidase, acid phosphatase, fructose, γ-glutamyl transpeptidase, zinc, citric acid, uric acid, superoxide dismutase and carnitine, sperm acrosin and lactate dehydrogenase C4, and semen free elastase, which can be used to evaluate the secretory functions of the epididymis, seminal vesicle and prostate, sperm acrosome and energy metabolism function, seminal plasma antioxidative function, and infection or silent infection in the male genital tract.


Subject(s)
Acid Phosphatase , Biomarkers , Carnitine , Citric Acid , Epididymis , Metabolism , Fructose , Humans , Infertility, Male , Diagnosis , Isoenzymes , L-Lactate Dehydrogenase , Male , Prostate , Metabolism , Semen , Chemistry , Seminal Vesicles , Spermatozoa , Chemistry , alpha-Glucosidases , gamma-Glutamyltransferase
10.
Braz. j. oral sci ; 16: e17052, jan.-dez. 2017. tab
Article in English | LILACS, BBO | ID: biblio-884032

ABSTRACT

Aim: The propagation of S. aureus in hospital and dental environments is considered an important public health problem since resistant strains can cause serious infections in humans. The genetic variability of 99 oxacillin-resistant S. aureus isolates (ORSA) from the dental patients (oral cavity) and environments (air) was studied by isoenzyme genotyping. Methods: S. aureus isolates were studied using isoenzyme markers (alcohol dehydrogenase, sorbitol dehydrogenase, mannitol-1-phosphate dehydrogenase, malate dehydrogenase, glucose dehydrogenase, D-galactose dehydrogenase, glucose-6-phosphate dehydrogenase, catalase and α/ß-esterase) and genetic (Nei's statistics) and cluster analysis (UPGMA algorithm). Results: A highly frequent polyclonal pattern was observed in this population of ORSA isolates, suggesting various sources of contamination or microbial dispersion. Genetic relationship analysis showed a high degree of polymorphism between the strains, and it revealed three taxa (A, B and C) distantly genetically related (0.653≤dij≤1.432) and fifteen clusters (I to XV) moderately related (0.282≤dij<0.653). These clusters harbored two or more highly related strains (0≤dij<0.282), and the existence of microevolutionary processes in the population of ORSA. Conclusion: This research reinforces the hypothesis of the existence of several sources of contamination and/or dispersal of ORSA of clinical and epidemiologically importance, which could be associated with carriers (patients) and dental environmental (air) (AU)


Subject(s)
Air , Dental Offices , Isoenzymes , Mouth , Oxacillin , Staphylococcus aureus , Genotyping Techniques
11.
J. bras. nefrol ; 39(3): 333-336, July-Sept. 2017. tab
Article in English | LILACS | ID: biblio-893763

ABSTRACT

Abstract Fabry disease is an X-linked lysosomal storage disease due to alpha-galactosidase A (α-Gal A) deficient activity which leads to the accumulation of glucoesphingolipids, such as globotriaosilceramide. There are over 700 known mutations of the enzyme gene, and most of them cause Fabry Disease. This case report describes a hemodialysis patient with a rare and controversial GLA gene mutation, the D313Y. The medecial investigation confirmed that D313Y is an alpha-galactosidase A sequence variant that causes pseudo deficient enzyme activity in plasma but not Fabry disease. Thus, clinical symptoms that prompted Fabry disease investigation could not be attributable to Fabry disease and therefore enzyme replacement therapy was not indicated.


Resumo Doença de Fabry (DF) é uma doença de depósito lisossômico ligada ao cromossomo X, causada pela deficiência da enzima alfa-galactosidase A (α-Gal A) que leva ao acúmulo de glicoesfingolipídeos, principalmente globotriaosilceramide. Existem mais de 700 mutações conhecidas do gene da enzima, a maioria delas são causadoras de DF. Este relato de caso descreve sobre um paciente em hemodiálise com uma mutação do gene GLA rara e controversa, a D313Y. A investigação médica confirmou que D313Y é uma variante que leva à pseudodeficiência plasmática da enzima, mas não ocasiona DF. Assim, os sintomas clínicos que induziram a investigação da doença não devem ser atribuídos à DF e, portanto, não foi indicada a terapia de reposição enzimática.


Subject(s)
Humans , Male , Adult , Fabry Disease/diagnosis , Fabry Disease/enzymology , alpha-Galactosidase/physiology , alpha-Galactosidase/genetics , Isoenzymes/physiology , Isoenzymes/genetics , Mutation
12.
Medicina (B.Aires) ; 77(3): 173-179, jun. 2017. graf, tab
Article in English | LILACS | ID: biblio-894453

ABSTRACT

There are currently two available enzyme replacement therapies for Fabry disease and little information regarding efficacy and safety of switching therapies. Between 2009 and 2012 there was a worldwide shortage of agalsidase beta and patients on that enzyme were switched to agalsidase alfa. This retrospective observational study assessed a 2-year period of efficacy and safety in a population of Fabry patients, in Argentina (30 patients) and Venezuela (3 patients), who switched therapies from algasidase beta to agalsidase alfa. Thirty-three patients completed 24-months follow-up after the switch (age 32.4 ± 2.0, range 10.0-55.9 years; male: female 23:10). Measures of renal function such as estimated glomerular filtration rate remained almost unchanged in 31 patients without end stage renal disease over the 2 years after switching and urine protein excretion continued stable. Cardiac functional parameters: left ventricular mass index, interventricular septum, left ventricular posterior wall showed no significant change from baseline in the 33 patients. Quality of life, pain and disease severity scores were mostly unchanged after 24-months and agalsidase alfa was generally well tolerated. Our findings showed there is no significant change in the efficacy measured through the renal or cardiac function, quality of life, pain, disease severity scoring and safety for at least 2 years after switching from agalsidase beta to agalsidase alfa.


Actualmente hay disponibles dos terapias de reemplazo enzimático en enfermedad de Fabry y existe poca información sobre la eficacia y seguridad del cambio de una a la otra. Entre 2009 y 2012 hubo falta a nivel mundial de agalsidasa beta y los pacientes tratados hasta entonces con esa enzima iniciaron tratamiento con agalsidasa alfa. El presente estudio retrospectivo, observacional evaluó la eficacia y seguridad a 2 años en pacientes con enfermedad de Fabry en Argentina (30 pacientes) y Venezuela (3 pacientes), que cambiaron su tratamiento de agalsidasa beta a agalsidasa alfa. Treinta y tres pacientes completaron 24 meses de seguimiento post-cambio (edad 32.4 ± 2.0; rango 10.0-55.9; hombre: mujer 23:10). La función renal, medida con la tasa de filtrado glomerular, se mantuvo sin cambios en 31 pacientes sin enfermedad renal terminal durante 2 años post-cambio. La secreción de proteína en orina continuó estable. Los parámetros de función cardíaca -índice de masa ventricular izquierda, septum interventricular, espesor de la pared posterior ventricular- no mostraron cambios significativos post-cambio de terapia en los 33 pacientes. La calidad de vida, el dolor y la gravedad de la enfermedad se mantuvieron mayormente estables luego de 24 meses, y la agalsidasa alfa fue generalmente bien tolerada. Nuestros resultados muestran que no hay cambios significativos en la eficacia medida por la función renal y cardíaca, en la seguridad y en los valores de la calidad de vida, el dolor o la gravedad de la enfermedad durante al menos 2 años luego del cambio de agalsidasa beta a agalsidasa alfa.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Young Adult , Fabry Disease/drug therapy , alpha-Galactosidase/administration & dosage , Enzyme Replacement Therapy , Drug Substitution , Glomerular Filtration Rate/drug effects , Isoenzymes/therapeutic use , Recombinant Proteins , Retrospective Studies , alpha-Galactosidase/therapeutic use , alpha-Galactosidase/pharmacology , Kidney/drug effects , Latin America
13.
An. bras. dermatol ; 92(2): 168-171, Mar.-Apr. 2017. tab, graf
Article in English | LILACS | ID: biblio-838036

ABSTRACT

Abstract: Background: Oral lichen planus is a potentially malignant disorder. One of the malignant transformation markers is cancer stem cells. One of the proposed marker for the detection of cancer stem cells's in head and neck cancer is aldehyde dehydrogenase. Recently it is shown that aldehyde dehydrogenase 1 expression in tissue samples is associated with oral lichen planus malignant transformation. Objective: This study evaluates salivary aldehyde dehydrogenase 1 in oral lichen planus. Method: Thirty patients and 30 age and sex-matched healthy volunteers were recruited. Oral lichen planus was diagnosed based on the modified World Health Organization criteria. Subjects in the case group were divided into reticular and non-reticular forms. Unstimulated salivary samples were collected at 10-12 AM. Saliva concentrations of aldehyde dehydrogenase 1 were measured by ELISA. Results: The differences between aldehyde dehydrogenase levels in the oral lichen planus group compared with the control group were not significant but aldehyde dehydrogenase in non-reticular oral lichen planus was significantly higher than that of the reticular form. Limitations of the study: This is a cross-sectional study, thus longitudinal studies in oral lichen planus may present similar or different results. Conclusions: The mechanism of malignant transformation in oral lichen planus is not defined. Previous analyses revealed that the aldehyde dehydrogenase 1 expression is significantly correlated with increased risk of transformation. This finding is consistent with our results because in the erosive and ulcerative forms of oral lichen planus, which have an increased risk of transformation, salivary aldehyde dehydrogenase 1 was overexpressed. A higher salivary aldehyde dehydrogenase level in non-reticular oral lichen planus can be a defensive mechanism against higher oxidative stress in these groups. Aldehyde dehydrogenase may be one of the malignant transformation markers in oral lichen planus. Further studies are needed for introducing aldehyde dehydrogenase as a prognostic indicator in certain lesions.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Saliva/enzymology , Cell Transformation, Neoplastic , Lichen Planus, Oral/enzymology , Retinal Dehydrogenase/analysis , Isoenzymes/analysis , Biomarkers/analysis , Case-Control Studies , Cross-Sectional Studies , Lichen Planus, Oral/complications
14.
Rev. chil. pediatr ; 88(1): 169-175, 2017. ilus, tab
Article in Spanish | LILACS | ID: biblio-844593

ABSTRACT

Las fosfatasas alcalinas (FA) son un grupo de 4 isoenzimas que se producen en diversos tejidos, pudiendo elevarse en condiciones fisiológicas y secundariamente a enfermedades óseas o hepatobiliares. En niños una de las causas más frecuentes e inocuas, pero poco conocidas, es la hiperfosfatasemia transitoria benigna de la infancia (HFTBI). El objetivo es reportar una serie de casos de HFTBI y proponer un criterio de enfrentamiento. Casos clínicos: Se presentan 5 niños de entre 11 y 50 meses de edad, 4 de ellos de sexo femenino, con hallazgo incidental de elevación severa (> 1.000 UI/l) en los niveles de FA en exámenes solicitados por mal incremento pondo-estatural o por cuadros infecciosos. A través de la anamnesis, examen físico y laboratorio básico se descartó enfermedad ósea o hepática. En 2 de los pacientes se determinaron las isoenzimas, destacando el predominio óseo. Se comprobó una normalización de los niveles de FA en un periodo de uno a 6 meses, sin evidencia de complicaciones posteriores. Conclusión: La HFTBI es un desorden bioquímico benigno de evolución autolimitada, que es importante tener presente al enfrentar un niño menor de 5 años con elevación severa de FA, en ausencia de alteraciones clínicas o de laboratorio que sugieran enfermedad ósea o hepática.


Alkaline Phosphatase (ALP) is a group of 4 isoenzymes produced in different tissues. Elevated levels of ALP can be developed under physiological conditions, and can indicate the presence of bone or hepatobiliary diseases. In children, one of its most common harmless causes is benign transient hyperphosphatasaemia (BTH), a little known condition. The objective is to report BTH cases and propose a monitoring plan. Case reports: The cases of 5 children aged between 11 and 50 months are presented, 4 of them female, with the incidental finding of a sudden and severe ALP elevation (> 1,000 U/l), in tests ordered due to either abnormal growth and development, or intercurrent infections. Bone and liver disease were ruled out using the patient history, physical examination and basic laboratory results. Isoenzymes levels were determined in 2 patients. A return to normal ALP levels was observed over a period of 1-6 months, with no evidence of further complications. Conclusion: BTH is a benign self-limiting biochemical disorder, which should be considered in children under 5 years old with severe ALP elevation in the absence of clinical or laboratory abnormalities suggestive of bone or liver disease.


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Bone Diseases/diagnosis , Alkaline Phosphatase/blood , Liver Diseases/diagnosis , Time Factors , Bone Diseases/enzymology , Retrospective Studies , Isoenzymes/blood , Liver Diseases/enzymology
15.
Article in English | WPRIM | ID: wpr-301066

ABSTRACT

<p><b>OBJECTIVE</b>To assess the effects of traditional herbal formulae Sijunzi Decoction (, Sagunja-tang, SJZD), Siwu Decoction (, Samul-tang, SWD), Bawu Decoction (, Palmul-tang, BWD) and Shiquan Dabu Decoction (, Sipjeondaebo-tang, SDD) on the activities of human cytochrome P450 (CYP450), a drug-metabolizing enzyme.</p><p><b>METHODS</b>Herbal formula water extracts were filtered and lyophilized after the powder extracts were dissolved in distilled water. The activities of major human CYP450 isozymes (CYP3A4, CYP2C19, CYP2D6 and CYP2E1) were measured using in vitro fluorescence-based enzyme assays. The inhibitory effects of the herbal formulas on the activities of CYP450 were characterized as half maximal inhibition concentration (IC) values.</p><p><b>RESULTS</b>All the tested herbal formulae inhibited CYP2C19 activity (IC: SJZD, 83.28 μg/mL; SWD, 235.54 μg/mL; BWD, 166.82 μg/mL; SDD, 178.19 μg/mL); SJZD (IC= 196.46 μg/mL), SWD (IC= 333.42 μg/mL) and SDD (IC= 163.42 μg/mL) inhibited CYP2E1-mediated metabolism; whereas BWD exhibited comparatively weak inhibition of CYP2E1 (IC= 501.78 μg/mL). None of the four herbal formulas significantly affected CYP3A4 or CYP2D6.</p><p><b>CONCLUSIONS</b>These results suggest that SJZD, SWD, BWD and SDD could potentially inhibit the metabolism of co-administered synthetic drugs whose primary route of elimination is via CYP2C19. In addition, clinically relevant pharmacokinetic interactions could occur when SJZD, SWD or SDD is co-administered with drugs metabolized by CYP2E1. Our findings provide information for the safety and effective clinical use of these four classic herbal formulas.</p>


Subject(s)
Cytochrome P-450 Enzyme System , Metabolism , Drugs, Chinese Herbal , Pharmacology , Hot Temperature , Humans , Inhibitory Concentration 50 , Isoenzymes , Metabolism , Plant Extracts , Pharmacology , Water , Chemistry
16.
Article in Chinese | WPRIM | ID: wpr-357506

ABSTRACT

<p><b>OBJECTIVE</b>This work aims to examine the effects of paeonol treatment on the ability of bone marrow-derived macrophage (BMM) to excrete inflammatory factors and to differentiate into osteoclasts upon induction with Porphyromonas gingivalis (P. gingivalis). This work also aims to investigate the underlying mechanisms of these abilities.</p><p><b>METHODS</b>BMM culture was treated with different paeonol concentrations at for 1 h and then stimulated with P. gingivalis for 24 h before programmed death-ligand 1 (PD-L1) was quantified with flow cytometry. Tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6 were detected by enzyme-linked immunosorbent assay (ELISA). The BMM culture was treated with the receptor activator for nuclear factor-κB ligand (RANKL) and macrophage colony-stimulating factor (M-CSF), and then with paeonol for 1 h prior to induction with P. gingivalis. Then, osteoclast formation was assessed using tartrate resistant acid phosphatase (TRAP) staining. The osteoclast-related proteins TRAP and receptor activator of nuclear factor-κB (RANK) were quantified by Western blotting.</p><p><b>RESULTS</b>Paeonol was nontoxic to BMM within a range of 10-50 μmol·L⁻¹. Flow cytometry showed that paeonol inhibited PD-L1 expression in P. gingivalis-induced BMM in a dose-dependent manner. ELISA indicated that paeonol dose-dependently inhibited the excretion of TNF-α, IL-1β, and IL-6 by P. gingivalis-induced BMM (P<0.01). TRAP staining revealed that paenol treatment inhibited the differentiation of P. gingivalis-induced BMM into osteoclasts. Western blot results suggested that paeonol decreased the expression of TRAP and RANK in BMM.</p><p><b>CONCLUSIONS</b>Paeonol dose-dependently inhibited the excretion of the inflammatory factors TNF-α, IL-1β, and IL-6 by P. gingivalis-induced BMM in a dose-dependent manner. Moreover, paenol treatment prevented the differentiation of P. gingivalis-induced BMM differentiation into osteoclasts.
.</p>


Subject(s)
Acetophenones , Pharmacology , Acid Phosphatase , Animals , Carrier Proteins , Cell Differentiation , Interleukin-1beta , Interleukin-6 , Isoenzymes , Macrophage Colony-Stimulating Factor , Macrophages , Membrane Glycoproteins , Mice , Osteoclasts , Porphyromonas gingivalis , RANK Ligand , Receptor Activator of Nuclear Factor-kappa B , Tumor Necrosis Factor-alpha
17.
Article in Chinese | WPRIM | ID: wpr-815092

ABSTRACT

To determine expression of lactate dehydrogenase (LDH)-5 in non-Hodgkin lymphoma and its clinical significance.
 Methods: LDH-5 levels and LDH levels in NHL patients were examined by agarose gel electrophoresis and enzymatic method (n=63), respectively. Positive rates of LDH-5 and LDH were statistically analyzed.
 Results: The median age of NHL patients was 56(19-84) years old, including 36 males and 27 females. The positive numbers for LDH-5 and LDH in the initial treatment group (n=43) were significantly different (P0.05). In 15 cases under the status of progress, the difference of LDH-5 and LDH expressions were not significant (P>0.05), whereas the difference in cases of small B cell lymphoma was significant (P<0.05).
 Conclusion: LDH-5 can be used as an index for NHL to judge the tumor load and to predict the recurrence.


Subject(s)
Adult , Aged , Aged, 80 and over , Biomarkers, Tumor , Blood , Metabolism , Female , Humans , Isoenzymes , Metabolism , L-Lactate Dehydrogenase , Metabolism , Lactate Dehydrogenase 5 , Lymphoma, B-Cell , Genetics , Lymphoma, Large B-Cell, Diffuse , Genetics , Lymphoma, Non-Hodgkin , Genetics , Lymphoma, T-Cell , Genetics , Male , Middle Aged , Neoplasm Recurrence, Local , Genetics , Prognosis , Tumor Burden
18.
Article in Chinese | WPRIM | ID: wpr-256589

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the expression of ALDH1, CXCR4 and E-cadherin in gastric carcinoma and their roles in lymphatic metastasis.</p><p><b>METHODS</b>Surgical specimens from 127 cases of gastric carcinoma were examined for expressions of ALDH1, CXCR4 and E-cadherin immuohistochemistry with 60 adjacent tissues as control. The associations of ALDH1, CXCR4 and E-cadherin with the clinicopathological pfeatures, 5-year survival rate and lymph node metastasis of the patients were analyzed.</p><p><b>RESULTS</b>ALDH1, CXCR4 and E-cadherin were positive in 57.5% (73/127), 63.8% (81/127), and 36.2% (46/127) of the gastric carcinoma tissues, respectively, showing significant differences from the rates in the adjacent tissues (P<0.05). The expression of ALDH1 was significantly correlated with TNM stage and lymph node metastasis (P<0.05), CXCR4 was significantly correlated with the invasion depth, differentiation, TNM stage and lymph node metastasis of the tumor (P<0.05), and E-cadherin was significantly correlated with the invasion depth, differentiation and lymph node metastasis (P<0.05). The positivity rates of ALDH1, CXCR4 and E-cadherin were higher in cases with lymph node metastasis than in those without metastasis. E-cadherin expression was inversely correlated with ALDH1 and CXCR4 expression, and the latter two were positively correlated (P<0.001). Overexpressions of ALDH1 and CXCR4 and a decreased expression of E-cadherin were all related to a poor prognosis of the patients (P<0.05). The expressions ofALDH1, CXCR4 and E-cadherin were all independent prognostic factors of gastric carcinoma.</p><p><b>CONCLUSION</b>The expressions of ALDH1, CXCR4 and E-cadherin are associated with the invasion, metastasis and prognosis of gastric carcinoma, and their combined detection provides important evidence for predicting the progression and prognosis of gastric carcinoma.</p>


Subject(s)
Cadherins , Genetics , Metabolism , Carcinoma , Genetics , Metabolism , Disease Progression , Humans , Isoenzymes , Genetics , Metabolism , Lymphatic Metastasis , Prognosis , Receptors, CXCR4 , Genetics , Metabolism , Retinal Dehydrogenase , Genetics , Metabolism , Stomach Neoplasms , Genetics , Metabolism , Survival Rate
19.
National Journal of Andrology ; (12): 856-860, 2016.
Article in Chinese | WPRIM | ID: wpr-262281

ABSTRACT

RNA binding proteins (RBPs) regulate the function of cells by interacting with nascent transcripts and therefore are receiving increasing attention from researchers for their roles in tissue development and homeostasis. The polypyrimidine tract binding (PTB) protein family of RBPs are important posttranscriptional regulators of gene expression. Further investigations on the post-transcriptional regulation mechanisms and isoforms of PTB proteins in the spermatogenesis show that PTB protein 1 (Ptbp1) is a predominant isoform in mitotic cells (spermatogonia), while Ptbp2 predominates in meiotic spermatocytes and postmeiotic spermatids and binds to the specific 3' untranslated region (3' UTR) of the phosphoglycerate kinase 2 (Pgk-2) mRNA, which helps to stabilize Pgk-2 mRNA in male mouse germ cells. In case of Ptbp2 inactivation in the testis, the differentiation of germ cells arrests in the stage of round spermatids, with proliferation of multinucleated cells in the seminiferous tubule, increased apoptosis of spermatocytes, atrophy of seminiferous tubules, and lack of elongating spermatids, which consequently affects male fertility. This article presents an overview on the structure of the PTB protein and its role in regulating mammalian spermatogenesis.


Subject(s)
Animals , Atrophy , Gene Expression Regulation , Physiology , Heterogeneous-Nuclear Ribonucleoproteins , Metabolism , Physiology , Homeostasis , Isoenzymes , Metabolism , Male , Mice , Nerve Tissue Proteins , Metabolism , Physiology , Phosphoglycerate Kinase , Metabolism , Polypyrimidine Tract-Binding Protein , Metabolism , Physiology , RNA, Messenger , Metabolism , RNA-Binding Proteins , Seminiferous Tubules , Pathology , Spermatids , Metabolism , Spermatocytes , Metabolism , Spermatogenesis , Physiology , Spermatogonia , Metabolism , Testis , Metabolism
20.
Article in English | WPRIM | ID: wpr-210167

ABSTRACT

We found that non-small-cell lung cancer (NSCLC) cells express high levels of multiple aldehyde dehydrogenase (ALDH) isoforms via an informatics analysis of metabolic enzymes in NSCLC and immunohistochemical staining of NSCLC clinical tumor samples. Using a multiple reaction-monitoring mass spectrometry analysis, we found that multiple ALDH isozymes were generally abundant in NSCLC cells compared with their levels in normal IMR-90 human lung cells. As a result of the catalytic reaction mediated by ALDH, NADH is produced as a by-product from the conversion of aldehyde to carboxylic acid. We hypothesized that the NADH produced by ALDH may be a reliable energy source for ATP production in NSCLC. This study revealed that NADH production by ALDH contributes significantly to ATP production in NSCLC. Furthermore, gossypol, a pan-ALDH inhibitor, markedly reduced the level of ATP. Gossypol combined with phenformin synergistically reduced the ATP levels, which efficiently induced cell death following cell cycle arrest.


Subject(s)
Adenosine Triphosphate , Aldehyde Dehydrogenase , Cell Cycle Checkpoints , Cell Death , Energy Metabolism , Gossypol , Humans , Informatics , Isoenzymes , Lung , Lung Neoplasms , Mass Spectrometry , NAD , Phenformin , Protein Isoforms
SELECTION OF CITATIONS
SEARCH DETAIL