Association of CYP2D6 (G1934A) gene and hematological disturbances in chronic pesticide exposures

Cytochrome P450 family genes (CYPs) have common polymorphisms, which are evaluated for pesticide-inducedoxidative stress susceptibility. Variant alleles in CYP enzymes may uncover susceptibility biomarkers of environmentaltoxicity. This study aims to investigate the relationship between CYP2D6 (G1934A) gene polymorphisms and chronicpesticide exposures, and to evaluate the association between CYP2D6 (G1934A) gene polymorphism on biochemicaland hematological parameters. A cross-sectional study was carried out at a health promoting hospital, Suphan Buri,Thailand. Rice farmers and a control group (n = 50 for each) were recruited and their personal data were collected. Theirblood samples were obtained by venepuncture and drawn into plain and Ethylenediaminetetraacetic acid (EDTA) tubes.Serum cholinesterase (SChE), liver function test, kidney function test, and complete blood count were assessed usingautomatic analyzers; and CYP2D6 (G1934A) genotyping was carried out by polymerase chain reaction-restrictionfragment length polymorphism (PCR-RFLP). SChE in rice farmers was significantly lower (p = 0.033), which maybe related to the use of chlorpyrifos. The genotypes were significantly different between rice farmers and the controlgroup (p = 0.0001), and the GA variant in rice farmers was more frequent. The CYP2D6 (G1934A) (rs 3892097))gene and SChE level were negatively correlated (r = −0.258, p = 0.009). However, other biochemical parameters werenot different. Blood indices, including mean corpuscular hemoglobin (MCH), mean corpuscular volume (MCV), andmean corpuscular hemoglobin concentration (MCHC), values of rice farmers were significantly lower than the controlgroup; and MCH, MCV, and MCHC values of the GA variant were also significantly lower than the wild type. The GAgenotype was associated with hematological toxicity of organophosphate metabolite in chronic exposures.

The haemato-protective effect of Piliostigma thonningii leaf extract on indomethacin-induced gastric mucosa ulcer in rats

Background: Gastric ulcer is a common gastrointestinal disorder with global consequence, which is aggravated by an imbalance between the aggressive factors and factors that maintain the mucosal integrity. The role of Piliostigma thonningii leaf extract on hematological indices of indomethacin-induced gastric mucosa lesions in Wistar rats was examined.Methods: Thirty-six male rats were divided into six groups of 6 rats each. Group I, the normal control, II gastric ulcerated + cimetidine (standard control), III extract only (100mg/kg bwt), while IV, gastric ulcerated control, V gastric ulcerated + extract (100mg/kg bwt) and VI gastric ulcerated + extract (200mg/kg bwt). After 12 days of administration, gastric ulcer was then induced by oral administration of 40mg/kg bwt indomethacin to rats in groups II, IV, V and VI. The rats were sacrificed 12 hours after indomethacin treatment and blood collected for hematological assay.Results: The RBC count and Hb pattern were similar. There was a significant (P<0.05) decrease in RBC and Hb of the ulcer control group which was normalized on administration of 200mg/kg bwt of P. thonningii extract. The MCV of the ulcer lesion was significantly (P<0.05) reversed to normal by the extract.Conclusions: The P. thonningii leaf extract showed promising result by normalizing decreased levels in RBC and Hb caused by ulcer. Except for platelet counts, the WBC count and differential WBC counts were quite positive. It was able to reverse macrocytosis caused by ulcer lesions to normal, hence exhibiting a hemato-protective nature.

A Study on the Nutritional Status in Hospitalized Patients with Pulmonary Tuberculosis

This study was conducted to evaluate the change of nutritional status and to analyze related factors in hospitalized tuberculosis (TB) patients during their hospitalization. The subjects were 398 men patients (mean age: 47.3 +/- 14.4 y) who had hospitalized more than 3 months at TB hospital located in Seoul. The anthropometric and blood biochemical indices were measured, and dietary intakes were assessed. At the time of admission the body weight of subjects was about 76% of the average body weight of Korean men with same age, Body mass index (BMI) of subjects was 18.5 kg/m2, and 53.8% of subjects were under weight status. Average level of blood hemoglobin and hematocrit of subjects was lower than the normal value. After 3 months of hospitalization period, the body weight and body mass index were significantly increased compared to admission by 3.9 kg (7.41%) and 1.4 kg/m2 (7.61%)(p<0.001), respectively. Blood levels of hemoglobin, hematocrit, albumin, and total protein were also significantly increased after 3 months of hospitalization period compared to admission (p<0.001). The increment in the body weight and blood indices was significantly higher in below 29 years group than over 60 years group (p<0.05). The increment in the body weight and body mass index was significantly higher in the under-body weight group compared to the normal-body weight group (p<0.05). In conclusion the body weight and body mass index of subjects were significantly increased after 3 months of hospitalization period, and the age and body weight of subjects at admission were supposed to influence the degree of change in the nutritional status.

Effect of Lead Intoxication and D-Penicillamine Treatment on Hematological Indices in Rats / Efectos de Intoxicación con Plomo y Tratamiento de D-Penicilamina en índices Hematológicos en Ratas

Lead is one of the most important environmental pollution which is toxic to many organ systems. D-penicillamine (D-P) is a chelator drug which is used for treatment of lead toxicity for several years. This study was conducted in order to evaluate the efficacy of D-P in reducing the effects of lead on hematological indices. This study was done on 36 male adult, 6-8 weeks albino Wistar rats in Gorgan University of Medical Sciences. At first male adult rats were exposed to lead acetate in their drinking water. After 8 weeks, 6 rats were selected and blood samples were prepared to assess the effects of lead toxicity. The remained lead exposed rats were divided into recovery and treatment groups where distilled water and D-P was administered for them, respectively. After lead exposure, red blood cell count increased slightly, but hemoglobin and hematocrite were decreased. Also MCV and MCH were significantly decreased (P<0.05). RDW, PDW and MPV were significantly higher in lead exposed rats (P<0.05). After recovery period, most of parameters were close to normal while there were no significant differences between recovery and treatment groups. This study showed that hematologic effects of lead are reversible and D-P administration do not play an important role in subchronic lead intoxication.

El plomo es uno de los más importantes contaminantes ambientales, tóxico para la mayoría de los sistemas orgánicos. La D-penicillamina (D-P) es una droga quelante, la cual se ha usado para el tratamiento de la toxicidad por plomo durante varios años. Este estudio fue dirigido para evaluar la eficacia de la D-P en la reducción de los efectos del plomo en los índices hematológicos. Este estudio se realizó en 36 machos adultos de ratas Wistar albinas de 6-8 semanas, en la Universidad de Ciencias Médicas de Gorgan, Irán. Al inicio, las ratas machos adultas fueron expuestas al acetato de plomo en el agua de beber. Después de 8 semanas, 6 ratas se seleccionaron para evaluar los efectos de la toxicidad del plomo en muestras sanguíneas. Las restantes ratas expuestas fueron divididas para su recuperación, a las cuales se les administró agua destilada y un grupo con tratamiento al que se le suministró D-P. Después de la exposición al plomo, el conteo de glóbulos rojos se incrementó ligeramente, pero la hemoglobina y el hematocrito disminuyeron. También el MCV y el valor de MCH disminuyeron significativamente (P< 0,05). Los valores de RDW, PDW y MPV fueron significativamente altos en las ratas expuestas al plomo (p< 0,05). Luego del periodo de recuperación, la mayoría de los parámetros se acercaron al valor normal y no hubo diferencias significativas entre el grupo recuperado y con tratamiento. Este estudio mostró que los efectos hematológicos del plomo son reversibles y la administración de D-P no juega un rol importante en la intoxicación subcrónica.

Food Intake and Clinical Blood Indices of Female College Students by Body Mass Index / 대한지역사회영양학회지

This study was conducted to investigate the relationships among body composition, dietary intake, and clinical blood indices in college students by body mass index (BMI). Their body compositions were determined by means of BIA (Bioelectrical Impedance Analysis) method. Their dietary intake was determined using a 3-day record method and their hematological indices were determined by semi-automated microcell counter (Sysmex F-520). Their serum lipid levels were measured using biochemical analyzer (Spotchem). Subjects were classified as underweight, normal or overweight groups according to their BMI. The subjects were 69 healthy college students aged 20 to 26 years. The average age, height, weight, and BMI was 21.3 years, 162.6 cm, 54.4 kg, and 20.6 cm/m2, respectively. Their average consumption of energy was 1693 kcal, 84.7% of RDA and their mean ratio of carbohydrate: protein: fat were 54.5 : 16.4 : 29.0. There was no significant difference in nutrient intake among the groups except beta-carotene and vitamin C. The beta-carotene intake was significantly higher in the underweight group. Vitamin C intake was significantly higher in the overweight group. The mean intakes of Ca, Fe, Zn and folate of subjects were 74.8% to 83.2% of RDA. Especially, intakes of Ca, Fe, Zn and folate were lower in the abnormal weight groups. The overall mean values of the hematological indices in female college students were within the normal range and there was no significant difference among the groups. However, anemic subjects with hemoglobin (<12 g/dl) and hematocrit (<36 g/dl) accounted for about 11% of the subjects. The overall mean values of the serum lipid levels were within the normal range and there was no significant difference among the groups. But serum HDL-cholesterol level of the overweight group was lower than that of the other groups. LDL-/HDL-cholesterol ratio and AI index were significantly higher in the overweight group compared to the other groups. Based upon this study, it is necessary for college women to be educated regarding consuming more Ca, Fe, Zn, folate and less fat and cholesterol in order to have better health promotion.

Correlation between Peripheral Blood Indices and Bone Marrow Dysplasia in Myelodysplastic Syndromes / 대한임상병리학회지

BACKGROUND: Several studies about myelodysplastic syndromes (MDS) have demonstrated that patients with high score of erythrocytic and total dysplasia showed a significantly lower degree of acute myeloid leukemia (AML) development. We analyzed correlation between bone marrow dysplasia and peripheral blood indices, and estimated the value of peripheral blood indices substituted for bone marrow examination to predict the progress of MDS to AML. METHODS: RBC count, MCV, RDW, WBC count, platelet count, MPV, and PDW were measured by Coulter Counter STKS (USA). We calculated the granulation score (G-score), percentage of peudo-pelger polymorphs (PPP) in the peripheral blood film, and examined the dysplasia in bone marrow aspirates. The reticulocyte survival study was performed with the venous blood collected in CPDA-1 under sterile conditions which was incubated immediately after collection at 37degrees C. RESULTS: G-score was inversly correlated with granulocytic and total dysplasia, but highly scored PPP showed a significantly lower degree granulocytic and total dysplasia. Reticulocyte survival curves showed variable pattern according to degree of erythrocytic and total dysplasia. Patients with a high degree of erythrocytic and total dysplasia showed significant difference compared with normal control group. MPV was increased in accordance with increase in megakaryocytic and total dysplasia. A lower score for erythrocytic and total dysplasia was observed in RAEB-t than in RA and RAEB. CONCLUSIONS: It is suggested that G-score, PPP, and MPV in peripheral blood as well as reticulocyte survival curve may be good markers for bone marrow dysplasia, and erythrocytic and total dysplasia in RAEB-t is lower than in RA and RAEB. Therefore, peripheral blood indices can be used to predict the progress of MDS to AML