Combination and cleavage of HBV DNA fragments by triple helix-forming oligonucleotides modified with manganese porphyrin in vitro / 中华医学杂志(英文版)

<p><b>OBJECTIVE</b>To observe the ability of triple helix-forming oligonucleotides (TFOs) modified with manganese porphyrin to combine with and cleave HBV DNA fractions.</p><p><b>METHODS</b>TFO were modified with manganese porphyrin and acridines, and then reacted with the (32)P labeled HBV DNA fragments at 37 degrees C in vitro (pH 7.4). Electrophoretic mobility shift assays and DNase I footprinting tests were used to show the affinity and specificity of TFO to bind to target sequences. The ability of TFO to cleave HBV DNA fragments was tested by cleavage experiments.</p><p><b>RESULTS</b>TFO modified with manganese porphyrin and acridine could bind to the target sequence in a sequence-dependent manner, with a Kd value of 3.5 x 10(-7) mol/L and a relative affinity of 0.008. In the presence of potassium monopersulfate (KHSO(5)), TFO modified with manganese porphyrin and acridine could cleave the target sequence where the triplex DNA was formed.</p><p><b>CONCLUSION</b>In the presence of KHSO(5), TFO modified with manganese porphyrin and acridine could bind and cleave the target HBV-DNA in a sequence-dependent manner.</p>

The therapeutic effect of Botulinum toxin A in conjunction with Wuida techniques in the treatment of spastic cerebral palsy / 中华物理医学与康复杂志

Objective To evaluate the therapeutic effect of botulinum toxin A in conjunction with Wuidatechniques in the treatment of lower limbs spasticity in children with cerebral palsy. Methods Forty patients weredivided randomly into a treatment group and a control group. The 18 patients in the treatment group were treatedwith Botulinum toxin A injection and Wuida rehabilitation techniques, the other 22 patients with Wuida techniquessolely served as control. All the patients were evaluated with Physician Rating Scale (PRS) and Ashworth Scale.Results Botulinum toxin A in conjunction with Wuida techniques significantly improved in the lower limbs func-tion of the patients at 3 days after treatment(P