Search

The haplotypes of β-globin gene cluster in patients with sickle cell anemia are associated with different clinical manifestations and fetal hemoglobin (HbF) levels. In addition, SNP in some genes within the β-globin gene cluster (HBBP1) and outside it (HMOX1) has been recently reported to be related to HbF levels. In this study, rs2071348 and rs2071746 polymorphisms in HBBP1 and heme oxygenase 1 (HMOX1) genes associated with different haplotypes and HbF levels in patients with sickle cell anemia were evaluated in comparison with healthy subjects. In this case-control study, 150 patients with sickle cell anemia (90 homozygous and 60 sickle-cell trait) were evaluated and compared with 50 healthy individuals referred to Shafa tertiary hospital in Ahvaz city of Khuzestan Province, Iran. HbF level was measured by alkali and acid electrophoresis. PCR-RFLP and ARMS-PCR methods were used to determine β-globin gene haplotypes and HBBP1 gene polymorphism, respectively. Arab-Indian was the most common genotype found in both homozygous and sickle-cell trait patients with a respective prevalence of 55.5 and 50% followed by homozygous Benin with 11.1 and 18.3% prevalence, respectively. The highest and lowest level of HbF were observed in Arab-Indian (24.1 ± 6.35) and Benin/Benin haplotypes (7.63 ± 2.29), respectively. A significant relationship was found between HbF level with rs2071746 A>T polymorphism of HMOX1 gene (P

Antiapoptotic molecules are important in the development, progression, and prognosis of malignant disorders. The aim of this study was to determine the expression of two distinct antiapoptotic molecules, SIRT1 and Survivin (SVV), in chronic myeloid leukemia (CML) and to compare them with hematological prognostic factors. In this study, we measured the expression of SVV and SIRT1 in 18 patients with typical Ph-positive chronic myeloid leukemia in chronic phases of the disease as well as in 18 matched healthy donors. SVV, SIRT1, and BCR/ABL expression were determined by quantitative-real-time polymerase chain reaction (Q-RT-PCR). HPRT was used as a reference gene to calculate SVV/HPRT and SIRT1/HPRT ratio, and ABL was used as an internal control for BCR/ABL expression. SVV was between 0.00 and 2.39-fold (median 0.204) and SIRT1 was between 0.00 and 33.32-fold (median 0.186). In our study, both SVV and SIRT1 were lower in patients than in the controls (p = 0.001 and 0.001, respectively). Although the expression of SVV and SIRT1 was decreased in patients with chronic phase (0.043 and 0.043-fold, respectively), a potent expression upregulation of both genes was found in K562, Jurkat, and U937 cell lines. Despite lower expression of both SVV and SIRT1 at chronic phase, a significant correlation was found between SVV expression levels and minor Hb concentration (

The effect of environmental salinity on hematological parameters of great sturgeon Huso huso juveniles was studied. Five-month-old juveniles (mean body weight 28.3 ± 2.1 g) were subjected to 0, 3, 6, 9, and 12 ppt salinities. The hematological parameters were assessed after a period of 20 days rearing at these salinities. After transfer from fresh water to brackish water, red blood cells, hematocrit, haemoglobin and mean corpuscular haemoglobin decreased, but mean corpuscular volume increased. Mean corpuscular haemoglobin concentration, white blood cells, monocyte counts, and eosinophil counts showed no significant variations with increase in environmental salinity. An increase was found in lymphocyte counts according to the increase of salinity from 0 to 12 ppt, while the fresh water control group maintained basal levels. Decrease in neutrophil counts was observed in great sturgeon with increase in environmental salinity. These data show significant effect of salinity on the blood parameters of great sturgeon.