Dihydromyricetin improves Parkinson's disease-like lesions in T2DM rats by activating AMPK/ULK1 pathway / 生理学报

The purpose of this study was to explore the effect and mechanism of dihydromyricetin (DHM) on Parkinson's disease (PD)-like lesions in type 2 diabetes mellitus (T2DM) rats. The T2DM model was established by feeding Sprague Dawley (SD) rats with high-fat diet and intraperitoneal injection of streptozocin (STZ). The rats were intragastrically administered with DHM (125 or 250 mg/kg per day) for 24 weeks. The motor ability of the rats was measured by balance beam experiment, the changes of dopaminergic (DA) neurons and the expression of autophagy initiation related protein ULK1 in the midbrains of the rats were detected by immunohistochemistry, and the protein expression levels of α-synuclein (α-syn), tyrosine hydroxylase (TH), as well as AMPK activation level, in the midbrains of the rats were detected by Western blot. The results showed that, compared with normal control, the rats with long-term T2DM exhibited motor dysfunction, increased α-syn aggregation, down-regulated TH protein expression, decreased number of DA neurons, declined activation level of AMPK, and significantly down-regulated ULK1 expression in the midbrain. DHM (250 mg/kg per day) treatment for 24 weeks significantly improved the above PD-like lesions, increased AMPK activity, and up-regulated ULK1 protein expression in T2DM rats. These results suggest that DHM may improve PD-like lesions in T2DM rats by activating AMPK/ULK1 pathway.

Effects of Electroacupuncture on Hippocampal AcH3 and BDNF in the Rat Model of SNI-induced Pain-Depression Dyad / 中山大学学报(医学科学版)

ObjectiveTo observe the impacts of electroacupuncture （EA） on the expression of hippocampal brain-derived neurotrophic factor （BDNF） and acetylated histone （AcH3） in the rat model of spared nerve injury （SNI）， so as to explore the analgesic and antidepressant effects of EA. MethodsTwenty-four Male SD rats were randomly divided into 4 groups， with 6 in each group. SNI was used to establish the model of pain and depression. All the groups were intervened one week after SNI surgery and persisted 5 weeks. The EA group was treated with EA （2 Hz） for 30 min every other day and imipramine drug group （IMP） group with peritoneal imipramine injection （10 mg/kg） per day. The sham surgery group （SS） and model group （SNI） received the same grasping stimulation. The paw mechanical withdrawal threshold （PWT） test was performed before the SNI surgery， 1， 2， 3， 4， 5， and 6 weeks after surgery， respectively. The forced swimming test （FST） and the sucrose preference test （SPT） were performed 6 weeks after SNI surgery. The Western blot method was employed to detect the expression of BDNF and AcH3 from the rat hippocampal tissue at the end of the behavioral tests. ResultsCompared with the SS group， the SNI group had significantly decreased PWT and sucrose consumption， prolonged FST immobility time （all P<0.01）， down-regulated BDNF and AcH3 expression （P<0.05 & P<0.01） in the hippocampus， which indicated the successful construction of the pain-depression model. Compared with the SNI group， 6 weeks after SNI surgery， the EA and IMP groups had significantly increased PWT and sucrose consumption， and reduced FST immobility time （all P<0.01）； the EA group had up-regulated BDNF and AcH3 expression （both P<0.05） in the hippocampus， the IMP group had up-regulated AcH3 （P<0.05） expression but no difference in BDNF expression. ConclusionEA could relieve pain and depressive behavioral symptoms in SNI rats. And its analgesic and antidepressant mechanisms may relate to the up-regulation of hippocampal AcH3 and BDNF expression.

DHM improves cognitive dysfunction in T2DM rats by inhibiting hippocampal endoplasmic reticulum stress / 中国药理学通报

Aim To investigate the effeet of dihydro- myricetin ( DHM ) on cognitive dysfunction in type 2 diabetes mellitus ( T2DM) rats and its mechanism.Methods SD rats were randomly divided into the normal control group ( n = 56) : normal diet and citrate buffer solution (30 mg • kg 1 ) ; T2DM model group (n =60) : high glucose, fat and low dose STZ ( 30 mg • kg 1 ) ( Four unsuccessful rats were eliminated ).Then rats in the above two groups were treated with or without DHM (250 mg • kg 1 • d intragastric).After 12 weeks, eight rats in each group were randomly selected to perform Morris water maze and Y maze test to observe the effect of DHM on cognitive function of rats.The remaining rats in each group were injected ERS antagonist tauroursodeoxycholic acid ( TUDCA ) 10 jxg • d 1 or ERS activator tunicamycin (TUN) 10 jxL, respectively.After the behavioral analysis, the hippocampal tissues of rats were taken out.The expressions of EH stress related proteins GRP78 and P- PERK were detected by Western blot.Results Both DHM and TUDCA could improve cognitive dysfunction in T2DM rats.On the contrary, TIJN reduced the effect of DHM on cognitive dysfunction in T2DM rats.TUDCA decreased the expression of GRP78 and p- PERK proteins in T2DM rats, while TUN increased the expression of GRP78 and p-PERK proteins in T2DM rats treated by DHM.Conclusion DHM improves cognitive dysfunction in T2DM rats, and the mechanism may be related to the inhibition of endoplasmic reticulum stress.

Dihydromyricin inhibited hepatic lipid deposition induced by high-fat diet in obese mice by activating SIRT1-AMPK pathway / 中国药理学通报

Aim To investigate the effect of dihydromyricetin (DHM) on lipid accumulation in liver of obese mice induced by high fat diet and its mechanism. Methods Sixty C57BL/6J mices were randomly divided into six groups (n = 10); (1)ND group; normal diet, (2)ND + L-DHM group; normal diet and treatment with low-dose DHM (125 mg • kg

Problems and strategies on perioperative assessment and management in liver resection for primary hepatolithiasis / 国际外科学杂志

Ductal strictures, recurrent cholangitis, liver atrophy or hepatic abscess, and ultimate cholangiocarcinoma are the major pathological entities of primary hepatolithiasis. Because of distinctive bile ductal lesion and hepatic tissue inflammation, liver resection indicated for hepatolithiasis should have different emphasis on perioperativer assessments and managements from hepatectomy for liver cnacer. Preoperative assessment should focus on the feasibility of precise hepatectomy for good long-term outcome. Percutaneous bile duct drainage is considered preferentially for patients with cholangitis. Attention should be paid to avoiding major blood loss, postoperative bile leakage and infectious biloma formation in surgical steps such as hepatic hilum dissection, liver parenchymal transection, bile duct exposure, bile duct stump closure and drainage of liver raw surface. The indication for biliary reconstruction should be based on the estimation of function of the Oddi sphincter. For residual hepatolithiasis, choledochoscopical trans-T tube stone withdraw should carried out 3 months postoperatively in prevention of laceration of T-tube fistula.

Effects of smoking on lung function and health fitness of college students / 中华健康管理学杂志

Objective:To explore the effects of smoking on lung function and physical fitness of college students.Method:168 college students on September 30, 2020 were selected as the research subjects by convenient sampling. According to whether they had been smoking for more than 3 years in the past or (and) now, they were divided into smoking group (66 cases, 39.3%) and non-smoking group (102 cases, 60.7%). The general demographic data, body composition, health fitness and lung function of all the included subjects were collected, and the health status of the two groups were compared, the relationship between lung function and healthy physical fitness in the smoking group was analyzed, and the influencing factors of forced vital capacity (FVC), forced expiratory volume in the first second (FEV 1) and expiratory vital capacity (EVC) were also analyzed. Results:The peak expiratory flow rate (PEF) of male college students in smoking group was lower than that of non-smoking group [(9.37±1.72) vs (10.04±1.69) L/s] ( F=5.051, P=0.026). The standing time with eyes closed and one foot of smoking group was longer than that of non-smoking group [(87.2±49.1) vs (63.6±39.7) s] ( F=9.327, P=0.003). The number of sit ups per minute of female college students in smoking group was less than that in non-smoking group [(39.5±7.5) vs (49.2±12.5) times/min] ( F=5.189, P=0.029). The peak inspiratory flow rate (PIF), FVC, FEV 1, EVC and PEF in the smoking group were positively correlated with grip strength, back muscle strength, number of sit ups, push ups, standing high jump and standing long jump ( P<0.001); through the analysis of relevant data, the estimation formula of lung function and health fitness items was obtained. Conclusion:Smoking is harmful to college students′ lung function and physical fitness.

Cosmc and T-synthase mRNA expression in peripheral B lymphocytes and serum levels of galactose-deficient IgA1 in patients with Henoch-Sch?nlein purpura / 中华皮肤科杂志

Objective:To investigate changes in the expression of Cosmc and T-synthase in peripheral B lymphocytes and in serum levels of galactose-deficient IgA1 (Gd-IgA1) in patients with Henoch-Sch?nlein purpura (HSP) .Methods:From January to August 2014, 56 patients with HSP were collected from outpatient or inpatient department of dermatology and venereology in the Second Hospital of Hebei Medical University, and were divided into 4 groups, including skin type group (22 cases) , joint type group (9 cases) , abdominal type group (12 cases) and renal type group (13 cases) . Twenty healthy volunteers served as healthy controls. Real-time fluorescence-based quantitative PCR was performed to determine the mRNA expression of Cosmc and T-synthase in peripheral B lymphocytes, and a lectin-based enzyme-linked immunosorbent assay (ELISA) to detect the serum level of Gd-IgA1. Comparisons among multiple groups were performed using one-way analysis of variance or Kruskal-Wallis H test, multiple comparisons were performed using least significant difference (LSD) - t test or Nemenyi test, and correlation analysis was performed using Spearman rank correlation analysis. Results:There was a significant difference in the duration from disease onset to the clinic visit ( χ2= 26.19, P < 0.05) among the skin type group (6.27 ± 3.09 d) , joint type group (5.56 ± 3.05 d) , abdominal type group (6.75 ± 3.75 d) , and renal type group (26.23 ± 14.12 d) , and the duration from disease onset to the clinic visit was significantly longer in the renal type group than in the other 3 groups (all P < 0.05) . The Cosmc mRNA expression significantly differed among the skin type group, joint type group, abdominal type group, renal type group and healthy control group (0.849 ± 0.239, 0.767 ± 0.181, 0.719 ± 0.183, 0.459 ± 0.121, 1.146 ± 0.232, F= 23.37, P < 0.05) , was significantly lower in the 4 patient groups than in the healthy control group ( P < 0.01) , and lower in the renal type group than in the other 3 patient groups (all P < 0.01) . There was no significant difference in the T-synthase mRNA expression in peripheral B lymphocytes among the patient groups and healthy control group ( F= 1.05, P > 0.05) . The serum level of Gd-IgA1 significantly differed among the skin type group, joint type group, abdominal type group, renal type group and healthy control group ( F= 7.06, P < 0.05) . Moreover, the Gd-IgA1 level was significantly higher in the patient groups than in the healthy control group (all P < 0.05) , and higher in the renal type group than in the other 3 patient groups (all P < 0.05) . The serum level of Gd-IgA1 in the HSP patients was significantly and negatively correlated with the mRNA expression of Cosmc ( rs=-0.50, P < 0.01) . Conclusion:Decreased mRNA expression of Cosmc and increased serum levels of Gd-IgA1 were observed in patients with HSP, and there was a negative correlation between the two indices.

Selection of bile duct injury repair method based on proximal bile duct blood supply / 国际外科学杂志

Surgical repair options of bile duct injury have been controversial.Clinical survey shows that high cholangiojejunostomy repairs have a better long term outcomes than end to end duct anastomosis or low cholangiojejunostomy repairs near to injured position,but the mechanism is not fully understood.With the depth understanding of blood supply changes of the injured proximal bile duct,it is believed that,in addition to the surgeon's experience,the severity of the injury,general or local condition of patient,the doctor should select specific surgical repair based on the blood supply of the injured proximal bile duct.

Radiofrequency ablation combined with low frequency ultrasound radiation with microbubble for the treatment of malignant liver neoplasms / 中华消化外科杂志

Objective To investigate the clinical efficacy and safety of radiofrequency ablation (RFA)combined with low frequency ultrasound radiation with microbubble for the treatment of malignant liver neoplasms.Methods The clinical data of 25 patients with malignant liver neoplasms who received RFA combined with low frequency ultrasound radiation with microbubble at the Kunming General Hospital from January 2010 to June 2011 were retrospectively analyzed.RFA was firstly performed with ultrasonic guidance,and then low frequency ultrasound radiation with microbubble was performed according to the results of ultrasound contrast examination 1 week after RFA.Ultrasound contrast examination was performed and the hepatic function and serum alpha fetoprotein (AFP) were assayed before operation,3 and 6 months after operation,respectively.All data were analyzed using the t test or chi-square test.Results The gross tumor volumes of 16 patients reduced by 30％ at 3 months after operation when compared with that before operation.The gross tumor volumes of 17 patients reduced by 50％ at 6 months after operation when compared with that before operation.The gross tumor volume of 7 patients reduced,but tissues surrounding tumors showed the signal of bloodstream.The gross tumor volume of 1 patient did not reduce.The levels of aspartate aminotransferase (AST),total bilirubin (TBil) and alpha fetoprotein (AFP) at 3 months after operation were significantly lower than those before operation (t =23.51,13.79,257.07,P ＜0.05).The levels of alanine aminotransferase (ALT),AST,TBil and AFP at 6 months after operation were significantly lower than those before operation (t =5.67,27.19,21.02,333.46,P ＜ 0.05).No local recurrence was detected during a follow-up of 6 months.The scores of quality of life (QOL) were very good in 21 (84.0％) patients,good in 2 (8.0％) patients,fair in 1 (4.0％) patient and poor in 1 (4.0％) patient.The scores of Karnofsky (KPS)were improved in 19 (76.0％) patients,stable in 5 (20.0％) patients and aggravated in 1 (4.0％) patient.There were significant differences in QOL and KPS between pre-and postoperation (x2=41.600,18.960,P ＜0.05).Conclusion RFA combined with low frequency ultrasound radiation with microbubble is effective in reducing the tumor size and protect the hepatic function for patients with malignant liver neoplasms.

Application of balloon tamponade hemostasis in abdominal surgery / 国际外科学杂志

Balloon tamponade hemostasis has been applicated for 50 years,and its appropriate usage can obtain exact curative effect with less adverse reactions.In recent years,with the continuous improvement in surgical therapy,balloon tamponade technique in treating various types of bleeding has accumulated many successful experiences.This paper intends to review the advances in balloon compression technology for recent years.

Effect of nerve block combined with sequential analgesia in peri-operative knee arthroscopy / 中国医师进修杂志

ObjectiveTo observe the effect of nerve block combined with sequential analgesia in peri-operative knee arthroscopy.Methods Two hundred patients undergoing knee arthroscopy,were performed lumbar plexus and sciatic nerve block anesthesia by nerve stimulator with ultrasound guidance.Celecoxib was combined for sequential analgesia.The vital signs,the effect of anesthesia in the surgery,the duration of postoperative analgesia,and patient's satisfaction to analgesia were observed to evaluate the clinical effects.ResultsThe vital signs of the patients in the surgery were stable,the effect of anesthesia was good,180 cases of excellent,16 cases of good,4 cases of poor.The duration of postoperative analgesia was 6-10 (8.2 ± 0.5) h.Combined with sequential analgesia program,there was high patient's satisfaction [ excellent 75％ (150/200),good 10％ (20/200),general 10％ (20/200),poor 5％ ( 10/200 ) ].Conclusion The nerve block combined with sequential analgesia is safe and effective in knee arthroscopy,it achieves high patient's satisfaction,this maybe a routine in knee arthroscopy.

Revaluation of the stent in the bile duct / 国际外科学杂志

It is a consensus to place stent after cutting bile duct in the hepatobiliary surgery in the past.However,as the development of bile physiological research and surgical technique,especially the raise of medical concepts of rapid recovery,the negative effects which are caused by the placement of stent have been taken seriously gradually.Up to now,whether the stent should be placed after the bile duct is cut has no definite answer yet.

Anatomical polysegmentectomy with reservation of segments Ⅰ and Ⅳ for the treatment of complicated hepatolithiasis / 中华消化外科杂志

Anatomical hepatic segmentectomy is the treatment of choice for hepatolithiasis. However, in consideration of the volume of residual liver and the liver function, anatomical polysegmentectomy of the bilateral lobes for hepatolithiasis is restricted. Protection of the portal pedicles to the segments preserved and avoidance of ischemia/reperfusion injury to the residual liver parenchyma are critical steps during the operation.A female patient with hepatolithiasis and had a surgical history of choledocholithiasis removal and T-tube drainage received ana tomic polysegmentectomy with segments Ⅰ and Ⅳ preservation at the General Hospital of Kunming Medical College. During the operation, Portal pedicles to the segments Ⅰ , Ⅱ, right lobe,and segments Ⅱ and Ⅲ were isolated prior to liver parenchyma transection. Portal pedicles to segments Ⅰ and Ⅳ were protected under direct visualization. Hepatoduodenal ligament occlusion was not applied during liver parenchyma transaction. Segments Ⅱ- Ⅲ and Ⅴ-Ⅷ were anatomically resected, and segments Ⅰ ,Ⅳ were preserved with satisfactory vascularization. The patient recovered uneventfully and was discharged 14 days after the operation.

Effect of RNA interference on the bionomics of Cathepsin L of hepatoma carcinoma cells / 中华肝胆外科杂志

Objective To explore the effect of RNA interference on the bionomics of Cathepsin L of hepatoma carcinoma cells. Methods In this study, the experimental group was the Cathepsin L RNA interference group. Control groups were the normal blank hepatoma carcinoma cell group (the blank group) and the Cathepsin LRNA interference blank group (the fluorescence control group). Observing times were ld,3d and 6d after RNA interference. Transfection efficiency in each group was observed. Expression of Cathepsin L of hepatoma cells was detected by immunofluorescence, RT-PCR and WB. Cell vigor was detected by MTT assay. Changes in the cell cycle and apoptosis were observed by flow cytometry. Transwell cabin was used to detect the changes of cell invasive power.Results In the experimental group, Cathepsin L mRNA level and protein level significantly decreased, the proliferation index significantly decreased and apoptosis index significantly increased. The invasive power also decreased. Conclusion RNAi interference can inhibit Cathepsin L expression, cell proliferation and cell invasive power efficiently.

Pathophysiological changes and operative timing of iatrogentic biliary tract injury / 中华肝胆外科杂志

Long-term outcomes of surgical bile duct injury (BDI) repair are affected by multiple factors, such as surgeon's experience, severity of BDI, pathological changes of the proximal duct, and the manner and timing of surgical repair. However, the timing of BDI repair is still controversial still. In this article, the authors reviewed the correlation of pathophysiologic changes of the proximal duct, repair timing and outcome discussed in English references. It was shown that pathophysiologic changes of the proximal duct are a major contributor to the timing of BDI repair.

Intranasal low dosage sufentanil used in operation under local anesthesia / 中国医师进修杂志

Objective To observe effects of intranasal sufentanil on analgesia.Methods Eighty-two patients,who scheduled for selective thyroidectomy were randomly divided into the observed group and the control group with 41 cases in each group.In the observed group,patients received intranasal sufentanil 20 μg before the incision about 10 minutes,then administered local infiltration with 0.5% lidocaine.In the control group,patients received water for injection which was placebo instead sufentanil.By double blind method observed verbal mting scale(VRS)score.The values of NBP,HR,SpO2 and respiration rate(RR)were recorded before intranasal drugs and 5,10,20,40,60 min after intranasal drugs.The amount of local anesthetic,the size of thyroid gland,the time of operation and the satisfaction were compared between the two groups.Nausea vomiting and pruritus were also observed in order to assess the safety of intranasal sufentanil.Results All patients completed the operation successfully.The RR in the observed group decreased to(13.1±0.5),(13.8±0.6),(13.8±0.8)times/min after intranasal sufentanil 10,20,40 min,and had significant difference with those before intranasal drugs(P＜0.05),anastated after 60 min.VRS score of the observed group was(2.0±0.4)scales,less than the control group,and had significant difference when the surgeon was dissecting thyroid gland(P＜0.05).The amount of local anesthetic in the observed group was(42.5±6.9)ml,less than the control group(63.7±4.3)ml(P＜0.05).The satisfaction had significant difference between the two groups(P＜0.05).Conclusion Intranasal sufentanil for analgesia is a safe and useful technology.

Diagnostic Ability of Laparoscopic Ultrasonography(LUS) for Urinary System Injury Induced by Laparoscopic Surgery in Animal Experimental Study / 中国微创外科杂志

Objective To appraise the diagnostic capability of laparoscopic ultrasonography (LUS) for urinary system injury induced by laparoscopic surgery in goats. Methods Animal models of different types of urinary system injury at different sites were established in five goats. One goat without injury was set as a negative control. LUS was used to examine the animals following randomization and single-blind principles. Results The sensitivity of LUS was 76.9% (10/13),specificity was 100%,and the false-negative rate was 23.1% (3/13). No false-positive results were detected in this study. The sham injury was accurately detected through LUS. The scan time of LUS ranged from 19 to 25 min with a mean of 21 min. Conclusions LUS is of value in the diagnosis of urinary system injury.

Effects of CO_2 Pneumoperitoneum on Pancreatic Function in Diabetic Rabbits / 中国普外基础与临床杂志

Objective To explore the effects of CO2 pneumoperitoneum on pancreatic function in diabetic rabbits. Methods Forty-eight rabbits were divided into 4 groups: control group (the group of N0, n=4), the group of T0 (n=4), the group of T10 (n=20), and the group of T15 (n=20). The animal used in the groups of T0, T10 and T15 was diabetic rabbit, and the pressures of pneumoperitoneum of the three groups were 0 mm Hg, 10 mm Hg and 15 mm Hg respectively.The model of diabetic rabbits were made through intrvenous administration of Allxon. Arterial blood samples were collected before the onset of CO2 pneumoperitoneum, 0, 2, 6, 12 hours after deflation for measuring blood glucose, amylase, insulin and C-peptid. Then the rabbits were sacrificed and their pancreases were removed for measuring SOD activity and MDA content. Results After abdominal deflation, the blood glucose, amylase, insulin, C-peptid, MDA content were significantly increased (P

Effects of CO_2 Pneumoperitoneum on Blood Flow of Carotid Arteries in Atherosclerosis Rabbits / 中国普外基础与临床杂志

0.05).Conclusion Under atherosclerosis conditions,CO_2 pneumoperitoneum has an adverse influence on the blood flow of the common carotid arteries which may be associated with increased intra-bdominal pressure,absorbed CO_2 gas.

Experimental Study of Influence of CO_2 Pneumoperitoneum on Intestinal Mucosa Permeability in Rats with Liver Cirrhosis / 中国普外基础与临床杂志

Objective To investigate the influence of CO_2 pneumoperitoneum on intestinal mucosa permeability in rats with liver cirrhosis.Methods Fifty rats were randomly divided into following groups: control group(n=5),cirrhosis group(n=5) and pneumoperitoneum group(n=40);the pneumoperitoneum group was further divided into 8 mm Hg group(n=20) and 13 mm Hg group(n=20).Four time points were chosen,including 0.5,2,6,and 12 hours after the end of pneumoperitoneum.After rat models with cirrhosis were established successfully,the abdominal cavity was insufflated with CO_2 and maintained under the pressures of 8 mm Hg and 13 mm Hg respectively for two hours.The portal venous blood was collected and the levels of D-lactic acid and endotoxin were measured.Results The levels of endotoxin and D-lactic acid in cirrhosis group were much higher than those of control group(P0.05).Conclusion The intestinal mucosa permeability is increased in rats with liver cirrhosis.It can be further increased under CO_2 pneumoperitoneum with certain pressure and time and in a pressure-dependent manner.The permeability can decrease after removal of pneumoperitoneum.