Objective To identify the rate of hepatitis B virus (HBV) reactivation and potential risk factors in hepatitis B surface antigen negative/hepatitis B core antibody positive patients with lung cancer receiving adjuvant chemotherapy without concomitant antiviral prophylaxis.Methods The records of 3280 patients with lung cancer who received adjuvant chemotherapy were retrospectively reviewed from January 2003 to December 2011.Among these patients,367 hepatitis B surface antigen negative/hepatitis B core antibody positive patients were analyzed for the HBV reactivation in this study.The HBV serology marker and biochemical tests of the 367 patients were performed.The data were analyzed by chi square test.Results Among 367 hepatitis B surface antigen negative/hepatitis B core antibody positive patients with lung cancer,14 patients suffered HBV reactivation.Univariate analysis showed that age≥70 years(x2 =13.003,P=0.019),abnormal liver computed tomography findings (x2 =11.225,P =0.026) and the amount of corticost eroids≥ 150 mg(x2 =7.008,P =0.033)were associated with HBV reactivation.However,gender and adjuvant chemotherapy regimens were not related with HBV reactivation.Conclusion HBV reactivation occurs in a proportion of hepatitis B surface antigen negative/hepatitis B core antibody positive patients with lung cancer during adjuvant chemotherapy.

Objective To investigate the application value of the modified Overlap method in digestive tract reconstruction of totally laparoscopic total gastrectomy (TLTG).Methods The retrospective cohort study was conducted.The clinicopathological data of 50 patients with gastric cancer who underwent TLTG with Overlap anastomosis between January 2016 and December 2016 in the Tangdu Hospital of the Fourth Military Medical University were collected.Twenty-six patients using classic Overlap method and 24 patients using modified Overlap method were respectively allocated into the classic Overlap group and modified Overlap group.All the patients underwent D2 lymph node dissection.Patients in the classic Overlap group underwent totally laparoscopic catastalsis side-to-side esophagojejunostomy.During digestive tract reconstruction in the modified Overlap group,there was no esophageal transection before anastomosis,and gastric fundus traction fully exposed to the lower esophagus.Esophagus was spun anticlockwise,and a hole was opened at the left posterior esophageal wall.Transection of jejunum was 25 cm away from Treitz ligment,and opening a hole at mesenteric margin was 6 cm away from distal jejunum to transected end of jejunum.Esophagus-distal jejunum side-to-side anastomosis was done using 60 mm linear stapler,and then laterally closing openings and transecting esophagus.Observation indicators:(1) intra-and post-operative recovery:total operation time,time of esophagus-jejunum anastomosis,volume of intraoperative blood loss,number of lymph node dissected,time to anal exsufflation,cases with complications and duration of postoperative hospital stay;(2) follow-up and survival.Follow-up using outpatient examination and telephone interview was performed to detect the postoperative tumor-free survival and tumor recurrence or metastasis up to March 2017.Measurement data with normal distribution were represented as (x)±s and comparison between groups was analyzed using the independent-sample t test.Comparison of count data was analyzed using the chi-square test or Fisher exact probability.Results (1) Intra-and post-operative recovery:all the 50 patients underwent successful TLTG using Overlap method,without conversion to open surgery.Total operation time and time of esophagus-jejunum anastomosis were respectively (278.6± 14.9) minutes,(46.5 ± 4.4) minutes in the classic Overlap group and (253.3 ± 12.8) minutes,(20.4 ± 2.3) minutes in the modified Overlap group,with statistically significant differences between the 2 groups (t =5.459,22.482,P＜0.05).Volume of intraoperative blood loss,number of lymph node dissected,time to anal exsufflation,cases with complications and duration of postoperative hospital stay were respectively (73±25) mL,34±6,(2.7± 1.0) days,2,(9.7± 1.6) days in the classic Overlap group and (71 ± 22) mL,35± 5,(2.6± 1.3) days,2,(9.8± 1.5) days in the modified Overlap group,with no statistically significant difference between the 2 groups (t =0.175,-0.616,0.293,-0.217,P＞ 0.05).Two patients in the classic Overlap group were respectively complicated with esophagus-jejunum anastomotic fistula and pancreatic leakage,2 patients in the modified Overlap group were respectively complicated with pulmonary infection and subcutaneous emphysema,and they were improved by symptomatic treatment.(2) Follow-up and survival:41 of 50 patients were followed up for 3-15 months,with a median time of 7 months,including 20 in the classic Overlap group and 21 in the modified Overlap group.During follow-up,patients had tumor-free survival,without tumor recurrence and metastasis.Conclusion Compared with classic Overlap method,the modified Overlap method can simplify the anastomotic procedures,shorten operation time and achieve similar efficacy,and it is also a simple and effective method for digestive tract reconstruction after TLTG.

We investigated the plant regeneration and production of flavonoids in three high-yield flavonoids transgenic Saussurea involucrata hairy roots C17, C27 and C46 by quantification of two phytohormones GA3 and IAA. The results showed that GA3 concentration at more than 1.0 mg/L could induce adventitious shoots in the hairy root lines. The highest shoot regeneration rate, about 82%, was obtained when the hairy roots C17 were cultured with 2.0 mg/L GA3. The results on HPLC and UV spectrophotometry showed that exogenous application of both GA3 and IAA increased the content of flavonoids in the hairy roots. The contents of flavonoids and apigenin in the hormone-treated hairy roots and regenerates were higher comparing with those in the untreated hairy roots and the regenerates. However, the content of flavonoids was not related to tissue weight, and was negatively related to the regeneration efficiency.
Culture Techniques ; Flavonoids ; biosynthesis ; Gibberellins ; pharmacology ; Indoleacetic Acids ; pharmacology ; Plant Growth Regulators ; pharmacology ; Plant Roots ; growth & development ; metabolism ; Plants, Genetically Modified ; growth & development ; metabolism ; Saussurea ; genetics ; growth & development ; metabolism

At present, Laparoscopy has become a professional skill that surgeons have to master. In cultivating surgeons in laparoscopy in our country, there are some deficiencies such as unbalanced regional development, technical difficulties, long learning curve, lack of standardized training mode and so on. Based on the original foundations, the Department of Gastrointestinal Surgery, Tangdu Hospital, the Air Force Military Medical University, has been constructing and improving the cultivating system by modifying the course contents, improving the training of endoscopic simulator, endoscopic surgery training on animal and endoscopic clinical practice, and managing the processes. Based on the above measures, certain results have been achieved.

Objective:Objective To explore the special role of nutrition specialists in the one-day-care clinic of gestational diabetes mellitus (GDM), and provide a basis for strengthening the standardized construction of one-day-care clinic.Methods:It was a retrospective observation study that the pregnant women who participated in the one-day-care clinic of GDM in our hospital without nutrition specialists in November and December 2017 were divided into control group (177 cases), and who participated in the one-day-care clinic of GDM in our hospital with nutrition specialists in January and February 2018 were divided into observation group (307 cases). The differences of pregnancy outcomes between the two groups were compared after the propensity score matching.Results:176 pairs of patients were successfully matched with a 1:1 propensity score. The incidence of macrosomia in pregnant women with GDM in the observation group (2.8%) was significantly lower than that in the control group (8.5%) ( P=0.036). There were no significant differences in the weight gain during pregnancy, the gestational week of delivery and the incidences of insulin use, hypertension during pregnancy, preeclampsia, cesarean section, premature infants, premature rupture of membranes, umbilical cord around the neck, and fetal distress between the two groups ( P>0.05). Conclusion:Nutrition specialists are indispensable in the multidisciplinary cooperation of one-day-care clinic of GDM, and they play a key role in considerably lowering the prevalence of macrosomia in GDM pregnant women.

OBJECTIVETo compare the short-term efficacy between totally laparoscopic distal gastrectomy(TLDG) with delta-shaped anastomosis (DS) and laparoscopic-assisted distal gastrectomy (LADG) with BrillrothI ( anastomosis (BI(), and to evaluate the application of DS.

METHODSBetween March 2013 and February 2014, 50 patients underwent TLDG with DS using linear staplers, and 43 patients underwent LADG with BI( using circular staplers. Clinical features and short-term efficacy of the two groups were analyzed retrospectively.

RESULTSThere were no significant differences between the two groups in terms of demographic indicators, operation time, intraoperative blood loss, number of removal lymph node, time to first flatus, incidence of complication and postoperative discharge day(all P>0.05). First-day postoperative pain was milder (3.1 ± 1.0 vs. 4.6 ± 1.4), and operative incision was shorter [(3.4 ± 0.4) cm vs. (6.9 ± 0.8) cm] significantly in TLDG with DS group(P<0.05).

CONCLUSIONTLDG with DS is safe and feasible for patients with gastric cancer, and has more advantages in cosmetic and comfort level than LADG with BI.

Anastomosis, Surgical ; Gastrectomy ; Humans ; Laparoscopy ; Lymph Node Excision ; Operative Time ; Postoperative Period ; Retrospective Studies ; Stomach ; surgery ; Stomach Neoplasms

OBJECTIVETo compare the short-term efficacy of modified medial (M-M) with traditional medial(T-M) approach in laparoscopic right hemicolectomy(LRHC)/or extended laparoscopic right hemicolectomy(ELRHC) for right or hepatic flexure colon cancer.

METHODSA comparative, retrospective study was performed that included all the patients scheduled for LRHC or ELRHC for right or hepatic flexure colon cancer between June 2013 and August 2014. The following factors of two groups were assessed: patient characteristics, operative details, pathology, and surgical outcomes.

RESULTSA total of 99 patients were evaluated, including 52 patients in the M-M group and 47 patients in the T-M group. Age, gender, body mass index, American Society of Anesthesiology(ASA) class, tumor location, diameter of tumor were not significantly different between the two groups. As compared to the T-M group, M-M group was associated with a significantly shorter operative time [(105.6±38.8) min vs. (138.2±39.5) min, P<0.05], less estimated mean blood loss[(38.4±12.4) ml vs. (87.2±24.6) ml, P<0.05] and lower intraoperative vascular damage rate [5.8%(3/52) vs. 25.5%(12/47), P<0.05]. There were no significant differences between these two groups in terms of intraoperative complications, CME, conversion rate, number of harvested lymph node, postoperative ileus, hospital stay, wound, lung and urinary system infections.

CONCLUSIONThe use of M-M approach in laparoscopic right hemicolectomy provides short-term benefits in operative time and estimated blood loss compared with traditional medial approach.

Case-Control Studies ; Colectomy ; Colon, Ascending ; Colonic Neoplasms ; Humans ; Ileus ; Intraoperative Complications ; Laparoscopy ; Length of Stay ; Operative Time ; Postoperative Complications ; Retrospective Studies

OBJECTIVETo explore the technical feasibility, safety, and clinical efficacy of β-shaped Roux-en-Y reconstruction(β reconstruction) in totally laparoscopic distal gastrectomy (TLDG).

METHODSClinical data of 21 patients with gastric cancer undergoing TLDG with β reconstruction from January 2014 to May 2014 were retrospectively analyzed.

RESULTSTLDG with β reconstruction was successfully performed in all the patients. The mean time of operation and β reconstruction was (229.0±18.7) min and (27.5±4.2) min. The blood loss was (91.0±38.3) ml and number of dissected lymph node was 33.2±4.6 per patient. The length of upper and lower segment of resection from lesion was (5.9±0.4) cm and (3.2±0.8) cm. The average time to resume fluid diet, time to restore flatus and hospital stay were (2.1±0.8) d, (3.1±0.9) d and (5.9±2.4) d, respectively.

CONCLUSIONThe β reconstruction is a safe and feasible procedure for TLDG and provides satisfactory short-term efficacy.

Objective:To investigate the effect of neoadjuvant chemotherapy on the safety of laparoscopic D 2 radical resection and prognosis of patients with locally advanced gastric cancer. Methods:The propensity score matching and retrospective cohort study was conducted. The clinicopathological data of 351 patients with locally advanced gastric cancer who underwent laparos-copic D 2 radical resection in the Second Affiliated Hospital of Air Force Medical University from December 2016 to December 2021 were collected. There were 256 males and 95 females, aged (58±9)years. Of the 351 patients, 124 cases undergoing neoadjuvant chemotherapy were divided into the neoadjuvant chemotherapy group, 227 patients undergoing postoperative adjuvant chemotherapy were divided into the adjuvant chemotherapy group. Observation indicators: (1) propensity score matching and comparison of general data of patients between the two groups after matching; (2) effect evaluation of neoadjuvant chemotherapy; (3) intraoperative and postoperative situations; (4) postoperative histopathological examinations; (5) follow-up. Propensity score matching was done by the 1∶1 nearest neighbor matching method. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the t test. Measure-ment data with skewed distribution were represented as M(range) or M( Q1, Q3), and comparison between groups was conducted using the rank sum test. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test. The Kaplan-Meier method was used to draw survival curves, and the Log-Rank test was used for survival analysis. Results:(1) Propensity score matching conditions and comparison of general data of patients between the two groups of patients after matching. Of 351 patients, 154 cases were successfully matched, including 77 cases in the neoadjuvant chemotherapy group and 77 cases in the adjuvant chemotherapy group. The elimination of gender, age, preoperative body mass index, clinical T staging and clinical N staging confounding bias ensured comparability between the two groups after propensity score matching. (2) Effect evaluation of neoadjuvant chemotherapy. Of the 77 patients receiving neoadjuvant chemotherapy, none of patient achieved complete response, 26 patients achieved partial response, 46 patients showed stable disease, 5 patients had progression of disease, showing the objective response rate as 33.8%(26/77) and the disease control rate as 93.5%(72/77). There were 15 males and 11 females sensitive to neoadjuvant chemotherapy, while 46 males and 5 females not sensitive, showing a significant difference between them ( χ2=11.05, P<0.05). (3) Intra-operative and postoperative situations. The operation time, volume of intraoperative blood loss, cases with intraoperative blood transfusion, time to postoperative first flatus, time to postoperative first liquid food intake, duration of postoperative hospital stay, cases with postoperative immediate complications, cost of hospital stay were (308±71)minutes, 100(range, 20?600)mL, 5, 3.0(range, 2.0?10.0)days, 4.0(range, 2.0?12.0)days, 9.0(range, 4.0?31.0)days, 7, 7.96(7.37,8.58) ten thousand yuan in patients of the neoadjuvant chemotherapy group, versus (296±67)minutes, 100(range, 20?500)mL, 4, 3.5(range, 1.0?14.0)days, 4.0(range, 2.0?15.0)days, 8.0(range, 5.0?45.0)days, 11, 8.18(7.52,9.19) ten thousand yuan in patients of the adjuvant chemotherapy group, showing no signifi-cant difference in the above indicators between the two groups ( t=1.13, Z=?0.37, χ2=0.12, Z=?1.26, ?0.33, ?0.70, χ2=1.01, Z=?1.04, P>0.05). (4) Postoperative histopathological examinations. Results of postoperative histopatho-logical examinations showed that all 154 patients achieving R 0 resection. Cases with pathological T staging as stage T1, stage T2, stage T3, stage T4, cases with pathological N staging as stage N0, stage N1, stage N2, stage N3, number of positive lymph nodes, cases with human epidermal growth factor receptor 2 (negative, positive) were 3, 7, 5, 62, 27, 19, 19, 12, 1(range, 0?28), 59, 18 in patients of the neoadjuvant chemotherapy group, versus 0, 0, 2, 75, 17, 15, 21, 24, 3(range, 0?31), 44, 33 in patients of the adjuvant chemotherapy group, showing significant differences in the above indicators between the two groups ( Z=?3.39, ?2.55, ?3.12, χ2=6.60, P<0.05). (5) Follow-up. Of the 154 patients, 143 patients were followed up for 37(range, 5?69)months. The 3-year overall survival rate and 3-year disease-free survival rate was 72.1% and 70.0%, respectively, in patients of the neoadjuvant chemotherapy group, versus 74.8% and 76.6% in patients of the adjuvant chemo-therapy group, showing no significant difference in the above indicators between the two groups ( χ2=0.14, 0.60, P>0.05). Conclusions:Compared to postoperative adjuvant chemotherapy, neoadjuvant chemotherapy does not bring additional surgical risks, but can reduce the tumor stage of patients who underwent laparoscopic D 2 radical resection for locally advanced gastric cancer. However, it does not show any advantage in improving survival of patients.

Objective: To understand the current situation and associated factors of myopia among primary school students, and to provide scientific basis for prevention and control of myopia among primary school students. Methods: In Gansu, Guangdong, Guangxi, Guizhou, Liaoning, Shandong, Shanxi and other provinces, 1 prefecture was selected, and a number of primary schools were selected from each region. All the students in the class were selected as the object of this survey. A total of 8 365 middle school students were examined for their eyesight, and the data of general population economic indicators and natural environment indicators were obtained through the statistical yearbook of various provinces and cities. The influencing factors of primary school students myopia were analyzed by chi-square test and multivariate Logistic regression. Results: Univariate analysis showed that different provinces and different sex, different nationalities, different grade, parents average salary, sunshine duration, air temperature, altitude, longitude, latitude, different economic zone(χ2=116.22, 18.08, 26.33, 1 059.04, 14.86, 10.28, 16.95, 10.01, 23.15, 29.43, 88.14, P<0.05). Multivariate analysis results showed that gender, grade, sunshine duration, longitude were risk factor for poor vision(OR=1.31, 1.71, 1.45, 1.54, P<0.05); Economic zone and parents salary were protective factors for poor eyesight of students (OR=0.65, 0.86, P<0.05). Conclusion Myopia of primary school students is affected by a variety of factors, economic and social factors and natural environmental factors have an impact on the screening.