ABSTRACT
Recurrent spontaneous abortion (RSA) is an important disease affecting female reproductive health, with an incidence of 1%-5%. The causes of RSA are complex, among which genetic factor is one of the common causes. A large number of studies in recent years have shown that RSA is closely related to the polymorphism of related genes. Normal fetal development requires the successful implantation of embryos and the maintenance of pregnancy, in which the maternal immune system and blood system play an important regulatory role. Therefore, the present paper summarized the relationship of the genetic polymorphism of maternal immune system and blood system to RSA, aiming to elucidate the pathogenesis of RSA at the gene level and provide accurate and feasible guidance for clinical prevention and treatment of RSA.
ABSTRACT
Hematopoietic stem cell transplantation is a pivotal method to treat hematological malignancies, hematopoietic failure diseases and inherited metabolic diseases. Umbilical cord blood is one of the main sources of hematopoietic stem cells and the most ideal cell source for stem cell research and application. In this article, the clinical application of umbilical cord blood transplantation for more than 30 years was reviewed from the aspects of the history, current situation, advantages, improvement, application prospect and expectation of umbilical cord blood transplantation.
ABSTRACT
OBJECTIVE: To explore the effect of occupational aluminum exposure on the blood of male workers. METHODS: A total of 249 male workers were selected as the research subjects by cluster sampling method in the electrolytic workshop of an aluminum plant. Blood samples were collected for determination of the blood aluminum concentration and blood routine. The subjects were divided into low-, medium-, and high-aluminuml groups based on the tertile of blood aluminum level(P_(33) is 13.9 μg/L, P_(67) is 37.7 μg/L). RESULTS: The red blood cell(RBC) count and hemoglobin level in patients of the high-aluminum group were lower than that of the low-aluminum group(P<0.05). There was no significant difference of the RBC count and hemoglobin level of patients in middle-aluminum group compared with that of the low-and high-aluminum groups(P>0.05). There was no statistical significant difference in white blood cell count and platelet count among the three groups(P>0.05). The results of the generalized linear regression model showed that the higher the blood aluminum level, the lower the RBC count and hemoglobin level of workers(P<0.05) after eliminating confounding factors such as age, length of service, education level, smoking, and drinking. CONCLUSION: Occupational aluminum exposure can cause a decrease of RBC count and hemoglobin level with a dose-effect relationship in workers.
ABSTRACT
Objective@#To investigated the effect of long-term low-concentration mixed benzene exposure on peripheral blood of male workers.@*Methods@#A case-control study was conducted to select 452 male workers exposed to mixed benzene (benzene, toluene, xylene) for five consecutive years from January 2012 to December 2016 in an automobile manufacturer as case group, and 438 male administrative and logistic managers who underwent physical examination during the same period as control group. The peripheral blood of the two groups was tested and compared, and the occupational hazards in the workplace were detected.@*Results@#There were low dose exposure to mixed benzene in the enterprise, but the test results met the occupational exposure limit requirements. During the five years from 2010 to 2016, between the two groups of workers, the mean values of WBC, NEUT, RBC and Hb were statistically different (P<0.05). There was no statistical difference (P>0.05) in the mean value of PLT. The abnormal rate of main peripheral blood indexes in the control group was higher than that in the exposed group. There were significant differences in NEUT, RBC and Hb (P< 0.05), but no significant differences in WBC and PLT (P>0.05).@*Conclusion@#It can not be concluded that long-term low-concentration mixed benzene exposure can cause the change of peripheral blood index.
ABSTRACT
Objective@#The main purpose of this study was to ascertain whether (or not) exposure to benzene, toluene, xylene and ethylbenzene (BTXE) , under normal working conditions, was associated with any health effects.@*Methods@#From January to December 2014, the workplaces concentrations of BTXE were measured of 71 enterprises in Suzhou Industrial Park. Occupational health examination were investigated on 764 employees who exposed to BTXE, as well as 4409 employees of the corresponding enterprises who unexposed to BTXE, and analyzed the data of the two groups.@*Results@#A total of 6 monitoring sites in 3 enterprises BTXE concentrations excess of the standards, the unexposed group was under the limit of detection. The means of red blood cell count, hemoglobin, hematocrit, intermediate cell count and percentage of intermediate cells were significantly higher in exposed group than in unexposed group (P<0.05) . Conversely, platelet count was significantly lower in exposed group than in unexposed group (P<0.05) . The proportion of red blood cell volume, lymphocyte count and percentage of intermediate cells were significantly lower in exposed group than in unexposed group (P<0.05) . Both means and proportion of glutamic pyruvic transaminase and urea nitrogen were significantly higher in exposed group than in unexposed group (P<0.05) . The positive rate of protein, urine, urine red blood cell were significantly higher in exposed group than in unexposed group (P<0.05) . The abnormal rate of electrocardiogram, liver and kidney B scan were significantly higher in exposed group than in unexposed group (P<0.05) . Multivariate logistic regression analysis revealed that percentage of intermediate cells increased, urea nitrogen increased, urine protein positived, urine red blood cells positived in exposed group the OR values were 1.689, 3.291, 3.163 and 1.743 (P<0.05) .@*Conclusion@#Occupational exposure to low concentrations of BTXE had a certain impact on the blood system and liver and kidney function of the employees, occupational health surveillance for such people should be strengthened.
ABSTRACT
Objective To investigate the characteristics of bone marrow examination in systemic lupus erythematosus (SLE) patients with blood system damage.Methods The data of 150 SLE patients with bone marrow puncture were analyzed retrospectively.Results Of the 150 patients,68 patients had abnormalities in bone marrow examination.Common bone marrow abnormalities were low proliferative bone marrow (26 cases,38.2％),hemophagocytic (17 cases,25％),pure red blood cells aplastic anemia (6 cases,8.8％),aplastic anemia (12 cases,17.6％) and decreased megakaryocyte count (7 cases,10.4％).10 cases of severe and severe anemia (90.9％ of patients with severe and severe anemia) and 21 patients with severe thrombocytopenia (67.7％ of patients with severe thrombocytopenia) had abnormal bone marrow examination.Conclusions It is not uncommon for SLE patients to have abnormal bone marrow examination.When the peripheral blood test is found to be severe anemia or severe thrombocytopenia,bone marrow aspiration and bone marrow biopsy are needed.
ABSTRACT
Objective To study the characteristics of bone marrow hematopoietic recovery such as absolute neutrophil count (ANC) and platelet (PLT ) after accepting hematopoietic stem cell transplantation in the patients with inv (9) .Methods A total of 39589 cases of definitely diagnosed hematonosis in our hospital from January 2010 to October 2015 served as the research subjects . The R banding technique ,polymerase chain reaction(PCR) and flow cytometry instrument were adopted to check chromosome karyotype ,fusion gene and bone marrow hematopoietic recovery related indicators .Results PML-RARα,BCR-ABL1 ,AML-ETO , EVI1 ,CBFβ-MYH11 ,MLL-AF6 ,AML-AF4 ,SET-NUM214 ,SIL-TALI ,IgH rearrangement ,TCR rearrangement and BCL1-IgH and other fusion gene were detected in the patients with inv (9) hematonosis .The recovery situation after receiving hematopoietic stem cell transplantation in the patients with inv (9):ANC recovered to ＞0 .5 × 109/L on 12 d after transplantation ,PLT recovered to ＞20 × 109/L on 16 d after transplantation .The recovery situation after receiving hematopoietic stem cell transplantation in the patients with noninv(9):ANC recovered to ＞0 .5 × 109/L on 12 d after transplantation ,and PLT recovered to ＞20 × 109/L on 13 d after transplantation .Conclusion The time achieving ANC recovery ＞0 .5 × 109/L after hematopoietic stem cell transplantation in the patients with inv(9) and without inv(9) is almost similar ,while the time achieving PLT count recovery in the patients with inv(9) is slightly longer than that in the patients without inv(9) .
ABSTRACT
OBJECTIVE: To explore the sub-chronic oral toxicity of 1,1-diamino-2,2-dinitroethene( FOX-7) in rats.METHODS: Ninety-six specific pathogen free healthy adult SD rats were randomly divided into control group,low-,medium-,and high-dose groups. Each group consisted of 24 rats,half of them were males and the other half were females.The low-,medium-,and high-dose groups of rats were exposed to 10,30,90 mg /( kg·d) body weigh of 1,1-diamino-2,2-dinitroethene by gavage for 90 days,once a day,6 days a week. The control group was given the same volume of 4%water starch solution. The toxic symptoms,the body weight,food utilization,routine blood,blood biochemical indicators,organ coefficients and histopathology changes of the rats were observed or tested. RESULTS: a) The body weights of male and female rats in the high-dose group in the 28 th day after exposure were lower than those of the control group for the same time and same sex( P < 0. 05). Food utilization in the male and female high-dose group in the 77 th and 90 th day after exposure were lower than those of the control group for the same time and same sex( P < 0. 05). b) Red blood cell counts,hemoglobin levels,hematocrit levels in the female rats of low-,medium-,and high-dose groups were lower than those of the female control group( P < 0. 05). Platelet counts in the female high-dose group was lower than that of the female control group( P < 0. 05). Red blood cell counts,hemoglobin level,hematocrit level and mean corpuscular hemoglobin concentration in the male high-dose group were lower than those of the male control group( P < 0. 05). The platelet counts in the male medium-,and high-dose group were lower than that of the male control group( P < 0. 05). c) Total cholesterol levels in female medium-,and high-dose group and blood urea nitrogen level in the female high-dose group were higher than those of the female control group( P < 0. 05). In high-dose group,the levels of total protein and uric acid were higher and lactate dehydrogenase level was lower than those of the control group( P < 0. 05). d) The spleen organ coefficients in the female high-dose group were higher and those in male medium- and high-dose groups were higher than those of the control group for same sex( P < 0. 05). The organ coefficients of liver and kidney in high-dose group were higher than those of the control group( P < 0. 05),the organ coefficients of testis and epididym in the male high-dose group were lower than those of the male control group( P < 0. 05). The testis convoluted tubule shrink and seminiferous cells decreased in the male high-dose group. e) The no observed adverse effect level of FOX-7 dinitroethene in female rats were less than10. 00 mg /( kg·d) and it was 10. 00 mg /( kg·d) in the male rats. CONCLUSION: FOX-7 could inhibit the growth of rats and damage the blood system and male reproductive system.
ABSTRACT
Introducción: el sistema sanguíneo ABO es un factor de riesgo para la malaria. Esta asociación afecta la estructura genética de poblaciones donde la malaria es endémica. Se desconoce la estructura genética para el sistema ABO en pacientes de Gambia. Objetivo: caracterizar la estructura genética para el sistema ABO de la población gambiana. Métodos: se realizó un estudio transversal en una muestra de 739 individuos admitidos en el Hospital Docente Reina Victoria, Gambia, desde diciembre de 2011 hasta septiembre de 2012. Los grupos del sistema ABO fueron determinados con el uso de antisueros comerciales. Los datos fueron digitalizados en forma de archivos Excel y procesados con el software SPSS y GDA. Resultados: las frecuencias para la grupos A, AB, B y O fueron: 0,24; 0,06; 0,22 y 0,48, respectivamente. Se asumió un equilibrio de Hardy-Weinberg, las frecuencias alélicas estimadas fueron de 0,16; 0,15 y 0,69 para los alelos I A, I B e I O, respectivamente. Esta distribución no mostró desviación significativa del equilibrio genético (p=0,9978). La heterocigocidad observada (H O=0,4804) mostró un ligero incremento respecto a la esperada (H E=0,4796). El mayor valor para el índice de fijación global correspondió al alelo I O (F ST=-0,002594). Conclusiones: existió un ligero incremento en la diversidad genética para el sistema ABO en pacientes de Gambia, que favoreció la transmisión del alelo I O y que sugirió la ocurrencia de cambios micro-evolutivos en respuesta a la presión selectiva impuesta por la malaria endémica, que significó el grupo O protector frente a la infección por el Plasmodium falciparum.
Introduction: the ABO blood system is a risk factor for malaria. This association affects the genetic structure of populations where malaria is endemic. Genetic structure for the ABO system in Gambia is unknown. Objective: to characterize the genetic structure for the ABO system of the Gambian population. Methods: a cross-sectional study was performed in a sample of 739 individuals admitted to the Reina Victoria Teaching Hospital , Gambia , from December 2011 to September 2012. ABO groups were determined using commercial antiserum The data were digitized in the form of Excel files and processed with SPSS software and GDA. Results: frequencies for groups A, AB, B and O were 0.24, 0.06, 0.22 and 0.48, respectively. A balance of Hardy -Weinberg equilibrium was assumed, estimated allele frequencies were 0.16, 0.15 and 0.69 for I A, I B and I O, respectively alleles. This distribution showed no significant deviation from genetic equilibrium (p = 0.9978). The observed heterozygosity (H O = 0.4804) showed a slight increase from the expected one (H E = 0.4796). The highest value for the overall index corresponded to first allele fixation (F ST = -0.002594). Conclusions: there was a slight increase in genetic diversity for the ABO system in Gambia, favoring transmission first allele and suggested the occurrence of micro - evolution changes in response to selective pressure imposed by endemic malaria, which represented the group O protector against infection by Plasmodium falciparum.
ABSTRACT
Introducción: entre las enfermedades cardiovasculares (ECV) se incluye el infarto agudo del miocardio (IAM), enfermedad que representa en la actualidad el 30 % del total de las defunciones mundiales. La predisposición individual y la presencia de factores de riesgo clásicos de ECV determinan la ocurrencia de un IAM; sin embargo, hay individuos que sufren un IAM y carecen de estos factores. Esto podría ser explicado por la presencia de factores de riesgo emergentes, entre los cuales encontramos al grupo sanguíneo ABO. Objetivo: determinar la frecuencia de los grupos del sistema sanguíneo ABO en pacientes con IAM y asociar la influencia que podría ejercer sobre el riesgo de padecer esta condición. Métodos: se seleccionaron 60 pacientes con diagnóstico de IAM y 60 sin antecedentes de IAM, a los cuales se les determinó el fenotipo y genotipo ABO. Se utilizó el Chi-cuadrado para establecer asociaciones entre el fenotipo ABO y la presencia de IAM. Los análisis de riesgo asociado fueron desarrollados calculando el odds ratio (OR) con un intervalo de confianza del 95 %. Resultados: se encontró que en los individuos sin IAM existe una frecuencia del 71,7 % del fenotipo «O¼. En la categoría indicada como «No O¼ que incluye los fenotipos A, B y AB, se obtuvo un OR de 2,21 para IAM (IC 95 %: 1,04-4,72 p=0,038). En relación con el genotipo, los individuos con IAM que presentan genotipos heterocigotos para el alelo O tienen un OR de 3,17 (IC95 %: 1,09-9,17 p=0,034) respecto a los homocigotos. Se pudo establecer un grupo de bajo riesgo para IAM asociado al fenotipo-genotipo homocigoto O y un grupo de mayor riesgo conformado por los fenotipos-genotipos A, B y AB.
Background: among cardiovascular diseases (CVD) acute myocardial infarction (AMI) is included, a disease that currently represents 30 % of total global deaths. The individual predisposition and the presence of traditional risk factors for CVD determine the occurrence of AMI, but there are individuals who suffer an AMI and without these factors. This could be explained by the presence of emerging risk factors, among which is the ABO system blood group. Aim: to assess the frequency of ABO blood group system in patients with AMI and to investigate the influence it could have on the risk of developing that condition. Methods: we selected 60 patients with a diagnosis of AMI and 60 with no history of AMI, to which were determined ABO group phenotype and genotype were determined. We used the Chi-square for association between ABO phenotype and the presence of AMI. The associated risk analysis was developed by calculating the odds ratio (OR) with a confidence interval of 95 %. Results: it was found that in individuals without AMI exists a frequency of 71.7 % of the phenotype «O¼ exists. In the category marked «No O¼ phenotypes including A, B and AB, an OR of 2.21 for MI (95% CI 1.04 to 4.72 p = 0.038) was obtained. In relation to genotype, individuals presenting with AMI heterozygous genotypes for allele OR have an OR of 3.17 (95% CI: 1.09 to 9.17 p = 0.034) compared to homozygous. It was established A group of low risk for MI associated with the phenotype-genotype homozygous O and a higher risk group consists of the phenotypes, genotypes A, B and AB was established.
ABSTRACT
Objective To observe the toxic effects of subacute manganese exposure through drinking water on blood system in rats and offer the scientific data for understanding manganese toxicity mechanism.Methods Male SPF SD rats were randomly divided into control group,high-dose and low-dose Mn-exposed group,12 animals in each group.The two Mn-exposed groups were treated with Mn at doses of 0.5,5.0 g/L,through drinking water,for 60 consecutive days.After 60 days of treatment,haemoglobin (Hgb),red blood cells count(RBC),platelet count(PC),white blood cells count(WBC)and differential count(WBC-DC)were examined by blood routine test.The activity of alanine aminotransferase(ALT),aspartate aminotransferase(AST),alkaline phosphatase(ALP),cholinestarase(ChE),monoamine oxidase(MAO),superoxide dismutase(SOD),nitric oxide synthase(NOS)and the level of glutathione(GSH),maleicdialdehyde(MDA)were determined.Results No significant differences of body weigh,Hgb, RBC and WBC were found among the 3 groups.PC and neutrophil(N)percent of WBC were higher,eosinophil(E)percent of WBC was significant lower in high dose and low dose Mn-exposed groups compared with the control group.None of basophil(B)and monocyte(M)was found in 3 groups.Compared with the control group,the activity of ALT,AST,ALP,ChE,NOS and MDA level increased,SOD activity and GSH level decreased significantly in high dose and low dose Mn-exposed groups,and significant doseeffect relationships were seen in the above changes.Conclusion Long term manganese exposure may have some adverse effects on the blood system in rats.
ABSTRACT
To introduce the development of myelodysplastic syndrome network course.