Biomedical subjects

Zhuo Zhao

Publications and source records attributed to Zhuo Zhao.

4 recordsLinked to original sources

PubMed2006

Protein-imprinted polymer with immobilized assistant recognition polymer chains.

Here we introduce a new method for preparing a protein-imprinted polymer with immobilized assistant recognition polymer chains as an additional element of monomer to create effective recognition sites. In this work the bovine serum albumin was used as template and the template protein was selectively assembled with immobilized assistant recognition polymer chains from their library, numerous limited length polymer chains with randomly distributed recognition sites and immobilizing sites. These assemblies of protein and immobilized assistant recognition polymer chains would be adsorbed by the macro porous adsorbent spheres and immobilized by cross-linking polymerization. After removing the template, binding sites that were complementary to the target protein in size, shape and position of recognition groups were exposed, and their confirmation was preserved by the cross-linked structure. The synthesized imprinted polymer was used to adsorb BSA from protein mixtures, and showed a high selectivity.

Biocompatible Materials↗

PubMed2006

Molecular imprinted polymer with cloned bacterial protein template enriches authentic target in cell extract.

Here we describe a new method for preparing a protein-imprinted polymer with a cloned bacterial protein template, which recognizes/adsorbs authentic target protein present at a relatively low level in cell extract. In this work, cloned pig cyclophilin 18 (pCyP18) was used as a template. The template protein was selectively assembled with memory molecules from their library, which consists of numerous limited length polymer chains with randomly distributed recognition sites and immobilizing sites. These assemblies of protein and memory molecules were adsorbed by porous polymeric beads and immobilized by cross-linking polymerization. After removing the template, binding sites that were complementary to the target protein in size, shape and the position of recognition groups were exposed, and their confirmation was preserved by the cross-linked structure. The synthesized imprinted polymer was used to adsorb authentic pCyP18 from cell extract, and its proportional content was enriched 300 times.

Bacterial Proteins↗

PubMed2006

[The effects of antidepressant treatment on efficacy of antihypertensive therapy in elderly hypertension].

OBJECTIVE: To explore the effect of antidepressant treatment on antihypertensive therapy of senile hypertension. METHODS: 138 cases of senile hypertension complicating with depression were studied. 103 senile hypertensive patients without depression in the same period served as controls. The patients were randomly divided into 3 groups as A, B and C for study. 12.5 mg/d hydrochlorothiazide and 30 mg/d release-controlling tablets of nifedipine were orally administrated as basic antihypertensive medication each group. Besides, 20 mg/d fluoxetine was additionally given to groups A and one tablet of almitrine l/d and 20 mg oryzanol 3/d were given to group B. The treatment lasted 12 weeks. RESULTS: In comparison with pre-treatment, the blood pressure at base line in sitting position and the average circadian SBP and DBP monitored with 24-hour ambulatory blood pressure monitoring (ABPM) was remarkably decreased in group A with statistical significance (P < 0.01). These blood pressure parameters in group B were also decreased as compared ith the pretreatment level brt with less statistical significance (P > 0.05). It was also noted tha with the addition of antidepressant fluoxetine, the manifestations of depression ere alleviated as shown by Hamilton depression (HAMD) scale. untoward reactions such as nausea, perspiration and skin rash were noted in a few patients, but none withdrew from the study. CONCLUSIONS: Antidepressant and antianxiety treatment is of benefit to the antihypertensive therapy in senile hypertensive patients with complications of depression and/or anxiety neurosis. Based on the results of this study, it is suggested that routine administration of antidepressants and antianxiety drugs should be carried out in senile hypertensive patients complicating with depression or anxiety.

Aged↗

PubMed2005

[Clinical study of pravastatin with different dosage in early admission period in patients with unstable angina].

OBJECTIVE: To investigate the effect of early intervention by pravastatin with two different dosage on inflammatory factors and endothelial vasodilator function in patients with unstable angina (UA). METHODS: 108 patients with UA were investigated consecutively and divided randomly into three groups (group 20 mg, n = 37; group 10 mg, n = 37; group control, n = 34). Blood samples were examined at admission and 4, 8 weeks after the therapy of pravastatin. Fourty patients of UA were chosen from those three groups (15, 15 and 10 cases respectively). The endothelium-dependent vasodilation and the function of vascular endothelium of them were measured. In the dosage of 20 mg pravastatin group non-endothelium-dependent vasodilation in brachial artery was also tested by ultrasound before and 8 weeks after the therapy. Cardiac events were followed up for 2 months. RESULTS: (1) The use of pravastatin in early admission period of UA could significantly reduce inflammatory factors and improve vascular endothelium function, which was more obviously in the group of 20 mg/d than in group of 10 mg/d. These benefits occurred in 4th week and more obviously in 8th week after the therapy. (2) The lipid lowering therapy in the early stage of admission (24 - 48 h) resulted in the reduction of cardiac events in the hospital. CONCLUSION: The use of pravastatin 20 mg/d seems better than that of 10 mg/d in all the fields as above in early admission period of UA patients.

Adult↗