Publications by authors named "Qian-yu Guo"

We used land cover data derived from Landsat thematic mapper (TM) and land surface temperature (LST) data from moderate-resolution imaging spectro-radiometer (MODIS) satellite images to study the variations in LST in July of different land cover types in Beijing-Tianjin-Tangshan urban agglomeration. Ordinary linear regressions (OLS) models and geographically weighted regressions (GWR) models were used to investigate the relationships between the proportions of land cover types and LST. The results showed that great variations in LST occurred among different land cover types.

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Background: Tissue factor (TF) is the initiation factor of the extrinsic coagulation pathway, and plays a critical role in the process of thrombosis. This study aimed to investigate the expression of TF and to explore their clinical effect on the pulmonary artery after acute pulmonary thromboembolism.

Methods: Thirty-four Japanese white rabbits (Level II animals) supplied by Tianjin Medical University were randomly assigned into: group A, specimens of the pulmonary artery taken 3 hours after pulmonary embolism (n=8); group B, specimens of the pulmonary artery taken 8 hours after pulmonary embolism (n=8); group C, specimens of the pulmonary artery taken 24 hours after pulmonary embolism (n=8); and control group, pseudo-operations performed without injection of autologous blood clots (n=10).

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Inhibition of Rho kinase (ROCK) has been shown to improve diabetic-related disorders. In this study, the cardio-protective effects and potential mechanisms of fasudil, a selective ROCK inhibitor, on diabetic cardiomyopathy were investigated in a streptozotocin (STZ)-induced diabetic rat model. Eight weeks after diabetes was induced by a single tail vein injection of 60 mg/kg STZ, rats were administered long-term fasudil or captopril as a control over a four-week period.

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Objective: To investigate the relationship between tryptophan hydroxylase (TPH) gene A218C in intron 7 and 5-hydroxytryptamine transporter (5-HTT) gene variable number tandem repeat (VNTR) in intron 2 and gene-linked polymorphic region (LPR) deletion/insertion polymorphism and essential hypertension (EH) in Chinese northern Han population.

Methods: A total of 280 EH patients and 200 normotensive controls were genotyped using polymerase chain reaction-restriction fragment length polymorphism technique.

Results: There were no significant differences in the frequencies of the genotypes and alleles of TPH gene A218C and 5-HTTVNTR between EH patents and controls (all P > 0.

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Objective: To investigate the association of serotonin transporter gene linked polymorphic region (5-HTTLPR) insertion/deletion polymorphism with early onset myocardial infarction(MI) and platelet membrane glycoprotein I b(GP I b) in Northern Han population of China.

Methods: A total of 150 patients with early onset MI and 150 age- and sex-matched controls with negative coronary arteriography were genotyped for the 5-HTTLPR polymorphism by using a polymerase chain reaction-based technique. The percentage of positive platelet membrane GP I b and the average fluorescence intensity were quantified by flow cytometry.

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