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Ischemia-reperfusion injury (IRI) refers to the reperfusion injury caused by the recovery of blood supply of ischemic tissues or organs, which commonly occurs in organ transplantation and other surgical procedures. IRI may cause a series of severe clinical issues, such as delayed graft function, acute kidney injury, myocardial infarction, ischemic stroke and circulatory arrest, etc. These events yield high incidence and fatality. At present, no effective solution has been available. Transient receptor potential canonical 6 (TRPC6), a member of Ca2+ channel family, is highly expressed in multiple types of cells. It may adjust many physiological functions by regulating intracellular Ca2+ concentration, which has become an important target for developing therapeutic drugs for multiple diseases. In this article, research progresses on the introduction and function of TRPC6, the association between TRPC6 and IRI and the therapeutic prospect of TRPC6 targeted drugs in IRI were reviewed, aiming to provide novel insights into the prevention and treatment of IRI during organ transplantation
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Objective:To establish an HPLC method for the determination of related substances in piperazine ferulate. Methods:An HPLC method was used to determine the related substances in piperazine ferulate. The separation was performed on an Xtimate C18 column (250 mm × 4. 6 mm, 5 μm). The mobile phase was 0. 5% acetic acid-methanol-acetonitrile with gradient elution. The flow rate was 1. 0 ml·min-1 and the column temperature was 30℃. The detection wavelength was 286 nm and the injection volume was 20μl. Results:Ferulic acid had a good linear relationship within the range of 5-30 μg·ml-1(r=1.0000). The detection limit was 0. 02 ng. Conclusion:The method is reliable, simple, accurate, stable and durable, and suitable for the determination of related sub-stances in piperazine ferulate.
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Objective To investigate the effects of piperazine ferulate tablets combined with Huangqi injection on β2-microglobulin,NGAL and clinical efficacy in patients with acute renal failure.Methods A total of 56 patients with acute renal failure from June 2012 to October 2015 in our hospital were collected and randomly divided into the experimental group and the control group with 28 cases in each group.All patients before the treatment of conventional care,diuretics and vasodilators to increase the patient's serum protein and vitamins,so that patients with the body's pH,moisture and electrolyte balance,and gave hemodialysis and low molecular heparin anticoagulant therapy.Patients in the control group were treated on the base of the conventional therapy withastragalus injection 20mL/time,one time a day,intravenous drip,treatment of four weeks; patients in the experimental group were treated on the base of the control group with piperazine ferulate tablet 200mg/time,three times/day,treatment of four weeks.After treatment,compared patients' β2 microsphere protein,NGAL and KIM-1 levels.Results There was no significant difference in the survival rate between the two groups.Compared with before treatment,β2 microsphere protein,NGAL and KIM-1 levels in two groups were lower(P<0.05);Compared with control group,β2 microsphere protein,NGAL and KIM-1 levels in the experimental group were lower(P<0.05).Conclusion Piperazine ferulate tablets combine with astragalus injection in the treatment of patients with acute renal failure have a better clinical curative effect,speculate that the mechanism is relate to reduce β2 microsphere protein,NGAL and KIM-1 levels.
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Objective:To establish a method for the determination of benzene, chlorine alcohol and pyridine residues in piperazine ferulate. Methods:GC was used with a DB-624 (30 m × 0. 53 mm, 1. 0 μm) elastic quartz capillary column. The flame ionization detector was used with nitrogen as the carrier gas. The initial temperature was 50℃, maintaining for 5 min, and raised to 80℃ at the rate of 10℃·min-1 , and then raised to 200℃ at the rate of 50℃·min-1 , and maintaining for 4 minutes. The inlet temperature was 200℃, and the detector temperature was 220℃. The split ratio was 1 ∶1 and the injection volume was 1μl. The flow rate was 3 ml· min-1. Results:The linear range of benzene was 0.16-0.96 μg·ml-1(r=0.999 5), the average recovery was 95.7% (RSD =2.1, n=9), and the detection limit was 0.16 ng. The linear range of chlorine alcohol was 16.11-96.65 μg·ml-1(r=0.999 7), the average recovery was 97. 8% (RSD=2. 1, n=9), and the detection limit was 0. 62 ng. The linear range of pyridine was 15. 87-95. 23 μg·ml-1(r=0. 999 8), the average recovery was 99. 2% (RSD=1. 3, n=9), and the detection limit was 0. 15 ng. Con-clusion:The method is reliable, simple, accurate and stable, and suitable for the determination of benzene, chlorine alcohol and pyri-dine residues in piperazine ferulate.
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A rapid analysis method of piperazine ferulate tablets by optic-fiber sensing technology with UV-vis absorption spectrum was established.Qualitative and quantitative data were obtained and compared by maximum and minimum wavelength,absorbance and contrast spectra.Similarity method was used to identify authenticity of drugs.The difference of contents measured by this method and UV determination method in China Pharmacopoeia showed no statistical significance (P＞0.05),while the similarity can be used as a parameter to identify the authenticity of drugs.
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AIM:To investigate the therapeutic protective effects and function regulations of conventional antidiabetic treatment plus piperazine ferulate tablet on traumatic vascular endothelial cells in type 2 diabetes mellitus.METHODS:80 patients were randomly divided into the treating group(n=37)and the control group(n=43).Conventional antidiabetic treatment plus piperazine ferulate was given to the treating group,and the control group was treated with conventional antidiabetic treatment plus vitamin C every day,and all the patients were treated with 4 weeks.The levels of fasting blood glucose(FBG),glycosylated hemoglobin A1C(Hb A1C),circulating endothelial cell(CEC),serum lipid peroxide(LPO),endothelin(ET)、nitric oxide(NO),tissue-plasminogen activator(t-PA)were determined during the therapeutic period.RESULTS:After 4 weeks of treatment,the levels of serum CEC,LPO and ET were lower in the treating group than those in the control group(P