Tissue Distribution of Yunaconitine in Rats by UPLC-MS/MS Method / 昆明医科大学学报

Objective To establish an acute yunaconitine poisoning rat model with a single oral administration and to determine the contents of yunaconitine in rat tissues by UPLC-MS/MS method, then investigate the distribution of yunaconitine in rats. Method The rats were randomly divided into three groups and were intragastrically administered a single dose of 2.2mg/kg,1.1mg/kg,0.7mg/kg yunaconitine, respectively.. The rats were killed 2h later, the stomach tissue, intestine tissue, liver tissue, pancreas tissue, kidney tissue, lung tissue, spleen tissue, heart tissue, bladder tissue, testis tissue, brain tissue and heart blood samples were collected. The contents of yunaconitine in the biological materials were determined by UPLC-MS/MS method after the biological samples extracted by liquid-liquid extraction. Result A rat model of the yunaconitine poisoning was made with a single dose of 1.1mg/kg, the concentrations of yunaconitine displayed in the organs with the following order:stomach, small intestine, liver, pancreas, kidney, lung, spleen, heart, bladder, testis, heart blood and brain. Conclusion Yunaconitine was widely distributed in rats, especially the levels in the stomach, small intestine and liver were the highest. The conclusion provides a basis for the selection of test materials for the poisoning of Aconitum vilmorinianum Kom.

HPLC fingerprint of Xiaoer Qixing Cha Oral Liquid / 中草药

Objective: To establish HPLC fingerprint for Xiaoer Qixing Cha Oral Liquid and analyze its chemical constituents. Methods: RP-HPLC method was performed on an Ultimate AQ-C18 (150 mm×4.6 mm, 5 µm) column with a gradient elution composed of acetonitrile-aqueous solution containing 0.5% acetic acid at the flow rate of 1.0 mL/min. The column temperature was set at 30℃, while the detective wavelength was set at 300 nm. HPLC-MS was used to identify the main chromatographic peaks of the fingerprint. Results: The chromatographic fingerprint common pattern was established. Twelve mutual peaks were obtained and identified from the chromatograms of 21 batches of samples and the similarity of the sample was over 0.89. Conclusion: The method has good precision, stability, and repeatability and can be used for the quality control of Xiaoer Qixing Cha Oral Liquid.

E-cadherin-transfected neural stem cells transplantation for spinal cord injury in rats / 华中科技大学学报（医学）（英德文版）

The effects of E-cadherin-transfected neural stem cells (NSCs) transplantation for spinal cord injury (SCI) in rats were investigated. Sixty SD rats were randomly divided into model control group, NSCs group, empty plasmid group and E-cadherin overexpression group (n=15 each). The animal SCI model was established by using the modified Allen's method. NSCs were cultured. Rats in NSCs group were subjected to NSCs transplantation. E-cadherin gene eucaryotic expression vector and pcDNA3.1-E-cadherin were respectively transfected into cultured NSCs, serving as empty plasmid group and E-cadherin overexpression group respectively. At 7th day after transplantation, neurological function of all rats was assessed by Tarlov score. After rats were sacrificed in each group, the number of BrdU and Nestin positive cells was counted by immunohistochemistry. Immumofluorescence method was used to detect the expression of neurofilament protein (NF) and glial fibrillary acidic protein (GFAP). As compared with model control group, the Tarlov score and the number of of BrdU and Nestin positive cells, and the expression of NF and GFAP in NSCs group, empty plasmid group, and E-cadherin overexpression group were increased significantly (P<0.05), and those in the E-cadherin overexpression group were increased more significantly than the other transplantation groups (P<0.05). It was suggested that E-cadherin could be conductive to nerve regeneration and repair probably by promoting the proliferation and differentiation of NSCs.

E-cadherin-transfected neural stem cells transplantation for spinal cord injury in rats / 华中科技大学学报（医学）（英德文版）

The effects of E-cadherin-transfected neural stem cells (NSCs) transplantation for spinal cord injury (SCI) in rats were investigated. Sixty SD rats were randomly divided into model control group, NSCs group, empty plasmid group and E-cadherin overexpression group (n=15 each). The animal SCI model was established by using the modified Allen's method. NSCs were cultured. Rats in NSCs group were subjected to NSCs transplantation. E-cadherin gene eucaryotic expression vector and pcDNA3.1-E-cadherin were respectively transfected into cultured NSCs, serving as empty plasmid group and E-cadherin overexpression group respectively. At 7th day after transplantation, neurological function of all rats was assessed by Tarlov score. After rats were sacrificed in each group, the number of BrdU and Nestin positive cells was counted by immunohistochemistry. Immumofluorescence method was used to detect the expression of neurofilament protein (NF) and glial fibrillary acidic protein (GFAP). As compared with model control group, the Tarlov score and the number of of BrdU and Nestin positive cells, and the expression of NF and GFAP in NSCs group, empty plasmid group, and E-cadherin overexpression group were increased significantly (P<0.05), and those in the E-cadherin overexpression group were increased more significantly than the other transplantation groups (P<0.05). It was suggested that E-cadherin could be conductive to nerve regeneration and repair probably by promoting the proliferation and differentiation of NSCs.

Extracorporeal shockwave therapy for erectile dysfunction and Peyronie's disease / 中华男科学杂志

Penile vascular endothelial damage, vasomotor dysfunction, and blood flow deficiency are the major causes of erectile dysfunction (ED). Current management of ED mostly depends on selective phosphodiesterase type 5- (PDE5) inhibitors, which fail for some ED patients. For Peyronie's disease-induced ED, surgical and physical therapies are used in addition to PDE5I medication, but frequently it is difficult to achieve satisfactory results. Recent studies show that the low-intensity extracorporeal shockwave therapy can promote angiogenesis and improve blood flow to the penis, which promises to be a novel effective therapy for ED and Peyronie's disease.

Studies on the progress of premixed calcium phosphate cements / 中国骨伤

Calcium phosphate cement (CPC) is considered as an important bone repairing materials due to its excellent biocompatibility, osteoconductivity and remodellability, the study about its performance is still a hot topic in the field of bone tissue engineering. Premixed calcium phosphate cements (PCPC) has advantages that can save operatiion time,be convenient to the operation and preservation compared with the traditional way of immediately mixing calcium phosphate cement. PCCP has overcome the shortcomings of uneven and inadequate mixing, and can be arbitrarily remodeled according to the shape of defect, thus researches on PCCP has also become more and more interested

Effect of berberine on PPARα/δ/γexpression in type 2 diabetic rat kidney / 现代生物医学进展

Objective To investigate the expression of peroxisome proliferator-activated receptors (PPARs) α/δ/γ protein and the effect of berberine on them in diabetic rat kidney.Methods Type 2 diabetic rats were induced by injection (ip) with streptozotocin 35 mg·kg1 and feeding with a high-carbohydrate/high-fat diet for 16 weeks.From week 17 to 32, diabetic rats were given low, middle, high-dose berberine 75, 150, 300 mg×kg-1, fenofibrate 100 mg×kg1 and rosiglitazone 4 mg×kg-1, respectively.The expression of PPARα/δ/γ protein in kidney were detected by immunohistochemistry.Results The expression of PPARα and PPARδ protein in the kidney of diabetic rat, which were significantly higher than that of the control one (P＜0.01), while PPARγ expression was obviously lower than that of the control one (P＜0.01).The expression of PPARα and PPARδ in in diabetic kidney were increased notably after middle-dose, high-dose berberine and fenofibrate treatment (P＜0.01);middle-dose, high-dose berberine and rosiglitazone treatment significantly reduced PPARγ expression (P＜0.01).Conclusion Berberine can restore the disturbed PPARα/δ/γ protein expression in diabetic rat kidney.

Effect of berberine on PPARα/δ/γexpression in type 2 diabetic rat kidney / 现代生物医学进展

Objective To investigate the expression of peroxisome proliferator-activated receptors (PPARs) α/δ/γ protein and the effect of berberine on them in diabetic rat kidney.Methods Type 2 diabetic rats were induced by injection (ip) with streptozotocin 35 mg·kg1 and feeding with a high-carbohydrate/high-fat diet for 16 weeks.From week 17 to 32, diabetic rats were given low, middle, high-dose berberine 75, 150, 300 mg×kg-1, fenofibrate 100 mg×kg1 and rosiglitazone 4 mg×kg-1, respectively.The expression of PPARα/δ/γ protein in kidney were detected by immunohistochemistry.Results The expression of PPARα and PPARδ protein in the kidney of diabetic rat, which were significantly higher than that of the control one (P＜0.01), while PPARγ expression was obviously lower than that of the control one (P＜0.01).The expression of PPARα and PPARδ in in diabetic kidney were increased notably after middle-dose, high-dose berberine and fenofibrate treatment (P＜0.01);middle-dose, high-dose berberine and rosiglitazone treatment significantly reduced PPARγ expression (P＜0.01).Conclusion Berberine can restore the disturbed PPARα/δ/γ protein expression in diabetic rat kidney.

Effect of berberine on PPARalpha/delta/gamma expression in type 2 diabetic rat retinae / 药学学报

Retinopathy is a major cause of morbidity in diabetes and remains the primary cause of new blindness. Therefore, it is necessary to find new drug to treat diabetic retinopathy. Type 2 diabetes mellitus (T2DM) rats were induced by injection (ip) with streptozotocin (STZ) 35 mg x kg(-1) and fed with a high-carbohydrate/high-fat diet 2 weeks later. From week 17 to 32, diabetic rats were given different doses of berberine 75, 150, and 300 mg x kg(-1), fenofibrate 100 mg x kg(-1) and rosiglitazone 4 mg x kg(-1), separately. Retinal structure was observed with hematoxylin-eosin staining and peroxisome proliferator-activated receptors (PPARs) alpha/delta/gamma protein expressions were detected by immunohistochemistry. The retina of control rats was thicker than that of other groups, 16 weeks treatment with berberine (150 and 300 mg x kg(-1)) and rosiglitazone 4 mg x kg(-1) thickened the diabetic retina, but no difference existed in retinal structure among groups. Both berberine (150 and 300 mg x kg(-1)) and rosiglitazone 4 mg x kg(-1) significantly decreased PPARy expression in diabetic retina; while berberine (150 and 300 mg x kg(-1)) and fenofibrate 100 mg x kg(-1) obviously increased both PPARalpha and PPARdelta expressions in diabetic retina. Berberine modulates PPARalpha/delta/gamma protein levels in diabetic retina which may contribute to ameliorate retinopathy complication induced by STZ and a high-carbohydrate/high-fat diet. It is expected that berberine might be a more beneficial drug to treat diabetic retinal complication comparing with fenofibrate and rosiglitazone.

Effects of Caulis Sinomenii and sinomenine on morphine-induced place preference and brain histamine level in mice / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the effects of Caulis Sinomenii and sinomenine on conditioned place preference (CPP) induced by morphine and brain histamine level in mice.</p><p><b>METHODS</b>Sixty mice were randomized into 6 equal groups and morphine (Mor) was injected subcutaneously (9 mg/kg) for 6 consecutive days to induce CPP using a shuttle box. Since the 4th day of training, the mice in 5 of the groups were treated for 3 consecutive days with Caulis Sinomenii (10 g/kg), sinomenine (60 mg/kg), diphenhydramine (30 mg/kg), CP48/80 (5 mg/kg) and L-histidine (750 mg/kg) in addition to morphine (9 mg/kg) treatment, respectively, leaving the other group with exclusive morphine treatment. Another 10 mice received saline injection to serve as saline control group. The content of histamine (HA) in the mouse brain was measured by fluorospectrophotometry.</p><p><b>RESULTS</b>In morphine group, the mice showed significantly extended stay in morphine-paired compartment whose HA content in the brain was markedly increased (P<0.01). Treatment with Caulis Sinomenii and sinomenine resulted in significantly reduced time of stay in morphine-paired compartment and brain HA level (P<0.01).</p><p><b>CONCLUSION</b>CPP induced by morphine in mice is associated with increased HA level in the brain. Caulis Sinomenii and sinomenine can suppress the acquisition of place preference induced by morphine and modulate HA level in the central nervous system in morphine-dependent mice.</p>

CT diagnosis on rupture of hepatic echinococcosis into the biliary tract / 中华放射学杂志

Objective To analyze the CT features of hepatic echinococcosis rupture into the biliary tract, and to assess the value of CT study in the diagnosis of such cases. Methods CT findings in 15 cases proved surgically and pathologically were studied and analyzed retrospectively. Results 15 patients had 20 hepatic echinococcosis, including simple echinococcosis with single cyst (9 lesions), simple hydatid cyst with multiple cysts (6 lesions), and multivesicular echinococcosis with multiple cysts (5 lesions). 2 lesions had calcifications on the cyst wall. The rupture of hepatic echinococcosis into the intrahepatic ducts was found in all 15 cases. Meanwhile, 12 of them had rupture into the common bile duct, and 2 into the gallbladder. The main CT findings were hepatic echinococcosis incorporated with the dilatation of the biliary tract. Conclusion Signs of rupture of hepatic echinococcosis into the biliary tract are characteristic in CT studies, providing a reliable evidence for preoperative diagnosis.

CT Diagnosis of Pulmonary Echinococcosis / 实用放射学杂志

Objective To analyse the CT features of pulmonary echinococcosis and to assess CT value in diagnosing this disease.Methods CT fingings of pulmonary echinococcosis in 35 cases proved pathologically were analyzed retrospectively.Results Pulmonary granulosus echinococcosis was 33 cases including simple hydatid cyst (11 lesions),datugter cyst hydatid (3 lesions),with calcification (1 lesion) ,rupture (11 lesions),merging infection (4 lesions) and rupture into thorax (3 lesions).Pulmonary alveolar echinococcosis was 2 lesions,CT findings apperared as irregular,peripherally scattered more nodules with small vacuoles or calcification and in combination with hepatic alveolar echinococcosis.Conclusion Pulmonary echinococcosis had characteristic features on CT,CT examination can provide more imaging informations for the treatment of pulmonary echinococcosis