Objective To predict and analyze the potential suitable areas of the Guangxi characteristic medicinal plant Zanthoxylum nitidum(Roxb.)DC.in China under climate change;To provide reference for ecological conservation and artificial cultivation of Zanthoxylum nitidum(Roxb.)DC.Methods Based on the 49 pieces of geographical distribution information of Zanthoxylum nitidum(Roxb.)DC.in China,19 environmental factors,and the maximum entropy(MaxEnt)model,a species distribution model was constructed to predict and analyze the potential growth areas of Zanthoxylum nitidum(Roxb.)DC.under current and future climate change.Results Under the current climate change,the potential suitable areas of Zanthoxylum nitidum(Roxb.)DC.in China mainly depended on 4 environmental factors:precipitation in the coldest season(Bio19),precipitation in the warmest season(Bio18),precipitation in the driest season(Bio17),and average annual temperature(Bio1).Under the future climate change,the center of mass of the high suitable areas of Zanthoxylum nitidum(Roxb.)DC.will mainly migrate to the northeast and northwest,and the migration distance will range from 13.63 km to 153.95 km.Compared with the present,the stable and unchanged high suitable areas of Zanthoxylum nitidum(Roxb.)DC.under future climate change will be reduced to about 21.68%,and mainly distributed in southwest Guangxi,and these stable and unchanged areas will become the first choice for semi-artificial planting of Zanthoxylum nitidum(Roxb.)DC.Conclusion The results are helpful to provide scientific basis for formulating reasonable ecological conservation and artificial cultivation strategies to reduce the impact of climate change on the population spread of Zanthoxylum nitidum(Roxb.)DC.

Objective:To explore the selection strategy of pedicled axial flaps for repairing high-voltage electric burn wounds in foot and ankle.Methods:The retrospective observational research method was used. From January 2017 to December 2022, 16 patients with skin and soft tissue defects in foot and ankle after high-voltage electric burns were treated in General Hospital of Eastern Theater Command, including 11 cases of unilateral defect and 5 cases of bilateral defect. All patients were male, aged from 25 to 75 years. After thorough debridement, the area of the defect to be repaired with the flap was 5.0 cm×4.0 cm to 12.0 cm×8.0 cm. Before operation, the color Doppler ultrasound, computed tomography angiography, or digital subtraction angiography was used to fully evaluate the degree of vascular injury in the affected limb and to identify the distribution and traffic anastomosis of vascular network. Pedicled axial flaps with reliable blood supply were used to repair the wounds as soon as possible, and the area of flaps ranged from 3.0 cm×2.0 cm to 13.0 cm×8.0 cm. The wound in the donor area of flaps was repaired with split-thickness skin graft from head or medium-thickness skin graft from thigh. The flap repair of wounds in various areas of the ankle and foot was recorded. The postoperative survivals of the flaps and skin grafts were observed after surgery. The postoperative appearance of flaps and walking function of patients were followed up. At the last follow-up, the foot and ankle function was evaluated and rated using the American Association of Foot and Ankle Surgeons Ankle Posterior Foot Scoring System.Results:Two wounds in toe area were repaired with reverse dorsal pedis flaps, 3 wounds in medial ankle area and 2 wounds in heel area were repaired with medial plantar flaps, 2 wounds in anterior plantar area combined with toe area were repaired with reverse medial plantar flaps, 2 wounds in anterior plantar area combined with toe area and 5 wounds in anterior plantar area were repaired with reverse medial pedis flaps, 1 wound in toe area was combined with proper plantar digital artery flap, 1 dorsal pedis wound and 1 lateral malleolus wound were repaired with lateral supramalleolar perforator flaps, and 1 lateral malleolus wound and 1 dorsal pedis wound were repaired with sural neurovascular flap. One flap had venous reflux disorder after surgery and survived after treatment, while the other flaps and skin grafts survived completely after surgery. During the follow-up of 6 to 24 months after operation, the appearance of the flaps was good, and the walking function of patients was normal. At the last follow-up, the functional score of foot and ankle was 76 to 95, which was evaluated as excellent in 11 cases and good in 5 cases.Conclusions:According to the condition of high-voltage electric burn in foot and ankle, early and thorough debridement, preoperative imaging examination to evaluate blood vessels of the affected limb, and selection of pedicled axial flap with reliable blood supply are good methods for wound repair and related functional reconstruction of high-voltage electric burn in foot and ankle.

Humans ; HIV-1/genetics* ; Anti-Retroviral Agents/therapeutic use* ; Mutation/genetics* ; Treatment Failure ; HIV Infections/genetics* ; Drug Resistance, Viral/genetics* ; Anti-HIV Agents/therapeutic use* ; Genotype

Objective:To investigate the application value of Overlap guiding tube (OGT) in Overlap esophagojejunostomy of laparoscopic total gastrectomy.Methods:The retrospective and descriptive study was conducted. The clinicopathological data of 5 patients with gastric cancer who were admitted to Nanfang Hospital of Southern Medical University from June to July in 2021 were collected. There were 3 males and 2 females, aged from 48 to 61 years, with a median age of 54 years. Patients underwent laparoscopic total gastrectomy combined with OGT-assisted Overlap esophagojejunostomy. Observation indicators: (1) surgical situations; (2) postoperative situations; (3) follow-up. Follow-up was conducted by outpatient examination and telephone interview to detect postoperative anastomotic stenosis and esophageal reflux up to September 2021. Measurement data with normal distribution were represented as Mean± SD, and measurement data with skewed distribution were represented as M(IQR) or M(range). Count data were represented as absolute numbers. Results:(1) Surgical situations: 5 patients underwent laparoscopic total gastrectomy combined with OGT-assisted Overlap esophagojejunostomy and D 2 lymph node dissection success-fully, achieving R 0 resection. There was no combined organ resection, intraoperative conversion to laparotomy or combined thoracotomy. There was no intraoperative conversion to other esophagoje-junostomy method either. The tumor diameter, length of surgical incision, the number of lymph nodes dissected, time of esophagojejunal anastomosis, time of digestive reconstruction, operation time, volume of intraoperative blood loss of 5 patients were 3.0(2.8)cm, 5.0(2.0)cm, 47.0(21.0), 21.0(5.0)minutes, 62.0(23.0)minutes, 295.0(75.0)minutes, and 50.0(60.0)mL, respectively. The anvil fork of linear stapler was successfully inserted into esophageal lumen by once operation in 4 cases of 5 patients and by twice operation in 1 case to complete the esophagojejunostomy. (2) Post-operative situations: the time to first out-of-bed activities, time to postoperative first anal flatus, time to postoperative initial liquid diet intake, time to postoperative initial semi-liquid diet intake, time to abdominal drainage tube removal, duration of postoperative hospital stay of 5 patients were 2.0(1.0)days, 3.0(2.0)days, 4.0(3.0)days, 6.0(3.0)days, 7.0(4.0)days, and 9.0(6.0)days, respectively. Results of postoperative pathological examination of 5 patients showed gastric adenocar-cinoma in all the 5 patients, with the TNM staging as stage pT2-4aN0M0. The esophageal surgical margin was negative in all cases, and the length of proximal margin from esophagus was 5.0(4.0)cm. None of the 5 patients developed anastomotic leakage, anastomotic bleeding or anastomotic stenosis. Two cases with mild pneumonia (Clavien-Dindo grade Ⅱ) were cured by conservative treatment such as anti-infection and expectoration promotion. There was no unplanned secondary surgery or perioperative death occurred to the 5 patients. (3) Follow-up: 5 patients were followed up for 3 months. None of the 5 patients developed anastomotic stenosis or esophageal reflux during the follow-up. Conclusion:OGT-assisted Overlap esophagojejunostomy of laparoscopic total gas-trectomy is safe and feasible, with good short-term effects.

Objective: To evaluate the effect of dexmedetomidine on hypoxia-inducible factor-1alpha (HIF-1 α) signaling pathway during hypoxia in mice with lung cancer. Methods: Eighteen clean-grade healthy adult male BALB/c nude mice, aged 8 weeks, weighing 20-30 g, were divided into 3 groups (n=6 each) using a random number table method: lung cancer group (group L), hypoxia+ lung cancer group (group HL), and hypoxia plus lung cancer plus dexmedetomidine group (group HLD). Human lung adenocarcinoma A549 cell suspension 1×10⁶/150 μl was injected via the tail vein to establish the mouse model of lung cancer.After the model was established successfully, chronic intermittent hypoxia was performed as follows: the mice were placed in air-tight modular incubation chambers, and the atmosphere was controlled by a constant gas flow containing 10% O₂ for 3 h once a day for 3 weeks.The mice in group HL were exposed to hypoxia.After the end of hypoxia exposure, the animals in group HLD were intraperitoneally injected with dexmedetomidine 25 μg/kg 3 times a week for 3 weeks in total.The mice in group L were placed in air-tight modular incubation chambers and the atmosphere was controlled by a constant gas flow containing 21% O₂ for 3 h once a day for 3 weeks, and the equal volume of normal saline was injected intraperitoneally.The mice were sacrificed by cervical dislocation, and the lung tissues were removed for determination of lung cancer nodules count, HIF-1α expression (by immunohistochemistry), expression of HIF-1α, survivin and X chromosome linked inhibitor of apoptosis protein (XIAP) (by Western blot), and expression of matrix metalloproteinase-2 (MMP-2) and MMP-9 (by real-time polymerase chain reaction). Results: Compared with group L, the number of lung cancer nodules was significantly increased, and the expression of HIF-1α, survivin, XIAP, MMP-2 and MMP-9 was up-regulated in the other two groups (P<0.05). Compared with group HL, the number of lung cancer nodules was significantly increased, and the expression of HIF-1α, survivin, XIAP, MMP-2 and MMP-9 was up-regulated in group HLD (P<0.05). A small number of HIF-1α positive cells were found in group L, a medium number of HIF-1α positive cells in group HL, and a large number of HIF-1α positive cells in group HAD. Conclusion Dexmedetomidine can promote proliferation of tumor cells in mice with lung cancer during hypoxia, and the mechanism is related to activating HIF-1α signaling pathway.

Objective To analyze the background and connotation of the maker education 2.0 and the innovativeness of the nursing maker education 2.0, and put forward the blended teaching of the nursing maker education 2.0. Methods The present situations of the maker education 2.0 and the connections between the maker education 2.0 and the nursing education were analyzed through documents and descriptive research, and the blended teaching program of the nursing maker education 2.0 was designed through exploratory research. Results Maker education 2.0 has gradually became an important way to cultivate students' innovation ability, and all kinds of schools tried to implement the maker education 2.0, but there has not been relevant research reports in nursing. Conclusions The blended teaching of the nursing maker education 2.0 can triggerthe reform of the nursing education. We should research the developmental mechanism and supporting theory, etc. of the nursing maker education 2.0 to explore much further for more knowledge about its application results.

Aim To study the effects of Dicliptera chinensis polysaccharide(DCP)on alcoholic fatty liver disease(AFLD)in rats based on anti-inflammation and antioxidation.Methods 60 rats were randomly divid-ed into six groups:control group,model group,silybin group and DCP of high,medium and low dose groups. The control group was fed with normal diet, other groups were fed with high sugar and high fat diet,and given 5% alcohol 5 mL·kg-1 by gavage.The alcohol consistency increased 5%every week until AFLD mod-els in rats were made after 7 weeks.Except control group,other groups were fed with high sugar and high fat diet,and given 35% alcohol 5 mL · kg-1 and DCP.All rats were killed after five weeks,and blood and liver tissues were collected.The activity of alanine aminotransaminase (ALT),aspartate aminotransferase (AST ), alkaline phosphatase (AKP ), triglyceride (TG),total cholesterol (TC ),low-density lipoprotein cholesterol(LDL-C)and high-density lipoprotein cho-lesterol(HDL-C)in serum were detected by using bio-chemical method. The contents of malondialdehyde (MDA),superoxide dismutase (SOD),reduced gluta-thione(GSH)in liver tissues were detected.The con-tents of tumor necrosis factor-α(TNF-α),interleukin-6 (IL-6 )and transforming growth factor-β1 (TGF-β1 ) were determined by enzyme-linked immunosorbent as-say(ELISA)in liver tissues.The liver tissues were ob-tained and histologic analysis was done through HE. Results DCP reduced the activity or content of ALT, AST,AKP,TG,TC,LDL-C,HDL-C,TNF-α,IL-6, TGF-β1 in serum and liver tissues of rats(P<0.05 ), and increased the activity or content of HDL-C,SOD and GSH (P<0.05 ).DCP could remarkably inhibit the NF-κB expression in liver tissues(P<0.01 ).The pathological examination indicated that DCP could ob-viously alleviate the inflammation and fat denaturation of the liver cells.Conclusion DCP can inhibit the de-velopment of AFLD.The mechanism may be related to antioxidation,free radical scavenging, inhibition of lipidperoxidation,anti-inflammation,and inhibition of the TGF-β1 and NF-κB expression.

A new method has been established for simultaneous determination of anions and cations in fertilizer sample by multimodal liquid chromatography with direct conductivity detection. An Acclaim Trinity P1 column based on nanopolymer silica hybrid technology with multimodal separation functional groups reversed-phase/anion-exchange/cation-exchange was used for the analysis. The chromatographic conditions were optimized and the effect ion of eluent on retention was discussed. Eight ions ( Li+, NH+4 , K+, HCOO-, NO-2 , Cl-, NO-3 and Br-) were separated and determined simultaneously by using 25 mmol/L CH3 COONa solution containing 50% acetonitrile at pH=5. 0 as mobile phase. The flow rate was 0. 50 mL/min and the temperature was 30 ℃. Under the optimum conditions, the linear ranges of the method were in the range of 0 . 5-200 mg/L for all the ions with correlation coefficient of 0 . 9997-0 . 9999 . Whereas the detection limits (S/N=3) were in the range of 0. 16-1. 72 mg/L and the relative standard deviations (RSD, n=9) were in the range of 1 . 3-2 . 5%. The method was applied to the determination of anions and cations in the fertilizer samples with satisfied results and the recoveries were in the range of 95 . 8%-103 . 8%.

Objective To systematically evaluate the clinical outcomes of patients with multivessel diseases treated by fractional flow reserve (FFR) guided percutaneous coronary intervention (PCI) or other forms of treatment .Methods Some keywords inclu-ding FFR or fractional flow reserve ,percutaneous coronary intervention or PCI ,multivessel coronary artery disease were used to search randomized control trails(RCT) ,which compared outcomes of patients with multivessel disease treated by FFR guided PCI with other forms of treatment ,in Chinese and English database including CNKI ,VIP ,Wanfang ,Pubmed ,EMBASE and the web of science .The quality of included studies was evaluated by Jadad quality score and all the data was analyzed by stata 10 .0 .Results A total of 7 english literatures accumulating 2024 cases in experimental group and 7 284 cases in control group were included in this study .Compared with other forms of treatment ,patients with multivessel diseases treated by FFR-guided PCI had significantly low-er risk of myocardial infarction (RR=0 .72 ,P=0 .008) .Although the risk of death and major adverse cardiovascular events were al-so be reduced ,there were no statistically significant difference .Conclusion FFR-guided PCI is an effective treatment for multivessel disease ,but it is still needs further verification for the application in Chinese population .

Objective To study the therapeutic effect and mechanism of Dicliptera chinensis polysaccharide ( DCP) on liver injury induced by antituberculosis drugs. Methods Sixty mice were randomly divided into six groups, namely normal control group, model group, glucurolactone group (in the dosage of 200 mg·kg-1·d-1), and high-, middle- and low-dose DCP groups ( in the dosage of 600, 400, 200 mg·kg-1·d-1, respectively). Except for the normal control group, the rats in the other groups were given intragastric administration of isoniazid and rifampicin ( 100 mg/kg) to induce liver injury model, and were simultaneously treated with corresponding agents, once a day. On the experiment day 30, the blood and liver tissue were sampled. The serum levels of alanine aminotransferase ( ALT) , aspartate aminotransferase ( AST) , alkaline phosphatase ( AKP) and microsomal nitric oxide ( NO) were detected by biochemical method. The contents of tumor necrosis factor alpha (TNF-α) and interleukin 6 (IL-6) in liver tissue were determined by enzyme-linked immunosorbent assay ( ELISA) , and the hepatic histopathology was observed after HE staining. Results In DCP groups, the hepatic pathological changes of the mice were improved, the number of the inflammatory cells was reduced, and the activities of serum ALT, AST and AKP as well as the contents of hepatic TNF-α, IL-6 and NO were reduced ( P<0.05 or P<0.01 compared with those in the model group). Conclusion Dicliptera chinensis polysaccharide is effective for liver injury induced by antituberculosis drug, and the mechanism may be associated with its anti-inflammatory action.