Objective:To evaluate the efficacy of esketamine combined with propofol for colonic transendoscopic enteral tubing (TET) in pediatric patients with autism.Methods:Sixty pediatric patients with autism of both sexes, aged 3-12 yr, weighing 15-45 kg, of American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ, who underwent painless transendoscopic enteral tubing (TET) from October 2022 to August 2023, were selected and divided into 2 groups ( n=30 each) by a random number table method: normal saline + propofol group (group NP) and esketamine + propofol group (group EP). In group NP, normal saline 10 ml was intravenously injected, and 30 s later propofol 2.0 mg/kg was given. In group EP, esketamine 0.3 mg/kg (diluted to 10 ml in normal saline) was intravenously injected, and 30 s later propofol 2.0 mg/kg was given. TET was performed when the Modified Observer′s Assessment of Alertness/Sedation Scale score ≤2. Propofol 0.5-1.0 mg/kg was added if the sedation depth was not enough, and the Modified Observer′s Assessment of Alertness/Sedation Scale score was maintained ≤2 until the end of surgery. The degree of body movement during TET was observed and recorded. The injection pain during induction, total consumption of propofol, operation time, spontaneous emergence time, and completion of operation were recorded. Adverse reactions such as respiratory depression, nausea and vomiting, hypotension, bradycardia, and postoperative agitation were recorded during operation and in the emergence period. Results:Compared with group NP, the degree of intraoperative body movement was significantly lighter, the total consumption of propofol and incidence of injection pain and intraoperative hypotension were significantly lower, and no significant change was found in the spontaneous emergence time and incidence of adverse reactions during recovery in group EP ( P<0.05). Conclusions:Esketamine (0.3 mg/kg) combined with propofol (2.0 mg/kg) can be safely and effectively used for colonic TET in pediatric patients with autism, and esketamine does not increase the risk of adverse reactions during resuscitation in a resuscitation strategy without early awakening.

ObjectiveTo study the epidemiological characteristics of deaths due to pneumoconiosis and its complications in order to improve the prevention and management of pneumoconiosis. MethodsThe pneumoconiosis deaths who died during 1959‒2019 in Chongming District of Shanghai were investigated and analyzed retrospectively by the descriptive epidemiological methods. The correlation of the age of onset and the course of disease was analyzed by Spearman rank correlation，as well as the duration of dust exposure and the course of disease in pneumoconiosis patients. ResultsFrom 1959 to 2019， there were 226 pneumoconiosis deaths， 223 males （98.67%）. The mortality of silicosis was the highest （82.07%）. The age of onset of pneumoconiosis was negatively correlated with the course of disease （r_s=-0.596，P<0.001）.There was no correlation between the duration of dust exposure and the course of disease in pneumoconiosis patients （r_s=-0.107，P=0.109）.There were statistically significant differences in mortality among groups in different types and stages of pneumoconiosis（χ²=59.250，27.666，both P<0.05）. The mortality increased with the increase of stage of pneumoconiosis. The mortality of pneumoconiosis was significantly different in 1959‒1979， 1980‒1989， 1990‒1999， 2000‒2009 and 2010‒2019 （χ²=29.750， P<0.05）. The top three causes of death in pneumoconiosis cases were respiratory diseases， malignant tumor and cardiovascular and cerebrovascular diseases.ConclusionIt is suggested to further strengthen the health monitoring and management of pneumoconiosis patients，control lung and chronic respiratory diseases to delay the life expectancy and improve quality of life of pneumoconiosis patients.

Objective:To evaluate the efficacy and safety of bendamustine monotherapy in Chinese patients with relapsed/refractory (R/R) B cell non-Hodgkin lymphoma (B-NHL) .Methods:This prospective, multicenter, open label, single-arm, phase Ⅱ study investigated bendamustine’s efficacy and safety in Chinese patients with R/R B-NHL. A total of 78 patients with B-NHL in 11 hospitals in China from March 2012 to December 2016 were included, and their clinical characteristics, efficacy, and survival were analyzed.Results:The median age of all patients was 58 (range, 24-76) years old, and 69 (88.4% ) patients had stage Ⅲ/Ⅳ disease. 61 (78.2% ) patients were refractory to previous treatments. Patients received a median of 4 (range, 1-10) cycles of bendamustine treatment. The overall response rate was 61.5 (95% CI 49.8-72.3) % , the median response duration was 8.3 (95% CI 5.5-14.0) months, and the complete remission (CR) rate was 5.1 (95% CI 1.4-12.6) % . In the full analysis set, median progression-free survival (PFS) and median OS were 8.7 (95% CI 6.7-13.2) months and 25.5 months (95% CI 14.2 months to not reached) , respectively, after a median follow-up of 33.6 (95% CI 17.4-38.8) months. Lymphopenia (74.4% ) , neutropenia (52.6% ) , and leukopenia (39.7% ) , thrombocytopenia (29.5% ) and anemia (15.4% ) were the most common grade 3-4 hematologic adverse events (AE) . The most frequent non-hematologic AEs included nausea (43.6% ) , vomiting (33.3% ) , and anorexia (29.5% ) . Univariate and multivariate analysis showed that <4 cycles of bendamustine treatment was a poor prognostic factor for PFS ( P=0.003) , and failure to accept fludarabine containing regimen was a poor prognostic factor for OS ( P=0.009) . Conclusion:Bendamustine monotherapy has good efficacy and safety in the treatment of patient with R/R B-NHL.

Objective: To develop an HPLC-ELSD method for the simultaneous determination of six saponins constituents including notoginsenoside R1, ginsenoside Rg1, ginsenoside Re, ginsenoside Rb1, ginsenoside Rc and ginsenoside Rd in Xinling pills.Methods: HPLC-ELSD was used, and the chromatographic separation was performed on an Agilent Eclipse XBD-C18 column (150 mm×4.6 mm,5 μm) with acetonitrile-water as the mobile phase with gradient elution at the flow rate of 1.0 ml·min-1, the column temperature was maintained at 20℃, the drift tube temperature was 60℃, and the gas pressure was 4.00 bar.Results: Notoginsenoside R1, ginsenoside Rg1, ginsenoside Re, ginsenoside Rb1, ginsenoside Rc and ginsenoside Rd was linear within the range of 0.30-6.00μg(r=0.999 5), 1.14-22.80μg (r=0.999 6), 0.17-3.40 μg (r=0.999 7), 0.81-16.20 μg (r=0.999 7), 0.08-1.60 μg (r=0.999 8) and 0.07-1.40 μg (r=0.999 8), respectively.The average recovery was 98.23%, 97.98%, 99.14%, 99.15%, 98.72% and 98.37%, and the RSDs were 1.56%, 1.31%, 1.16%, 1.07%, 0.73% and 0.92%(n=6), respectively.Conclusion: The method is convenient, accurate and reproducible in the quality control of saponins components in Xinling pills

Objective To investigate the diagnosis and treatment of ectopic opening of the common bile duct in the duodenal bulb.Methods The clinical data of 3 patients who were admitted to the Binzhou People's Hospital and 9 patients who were admitted to the Tianjin People's Hospital from January 2006 to December 2013 with ectopic opening of the common bile duct in the duodenal bulb were retrospectively analyzed.Seven patients had choledocholithiasis and 5 had stenosis at the end of common bile duct.The medical histories and clinical features in patients were analyzed and routine blood test and serum liver function test were done.All the patients received the endoscopic retrograde cholangiopancreatography (ERCP) examination and were cured.All the patients were followed up via outpatient examination and telephone interview up to August 2014.Results Six patients had histories of cholangitis recurrence and 2 had histories of duodenal ulcer recurrence.All the patients had pain in the right hypochondriac region of the abdomen.Seven patients had fever,chills,skin yellowing sclera and tenderness in the right hypochondriac region of the abdomen.The levels of alkaline phosphatase (ALP) and glutamyltranspeptidase (GGT) in 11 patients,the levels of TBil and DBil in 8 patients and the count of WBC in 7 patients were increased.(1) The results of ERCP showed as follows:there was no papillar opening at the second and third segment of duodenum.The crack-like opening located at the duodenal post-bulb with rough and erosive mucosal surfaces and intermittent outflow of bile.Duodenal ulcer was detected in 5 patients and duodenal bulb metamorphosis in 3 patients.All the 12 patients received successfully intubations.(2)The results of retrograde cholangiography showed as follows:the end of common bile duct of 12 patients was taper and sickle-shaped.Intra-and extrahepatic bile duct dilation was detected in 10 patients,choledocholithiasis in 7 patients and clear findings for the pancreatic duct in 5 patients.Among the 12 patients,8 received balloon dilation (5 with stenosis at the end of common bile duct,3 with choledocholithiasis),3 received laparoscopic common bile duct exploration (LCBDE) combined with cholangioenterostomy due to diameter of stone more than 1.5 cm and ectopic opening stenosis of the common bile duct in the duodenal bulb.One patient was treated by percutaneous transhepatic cholangiography (PTC) lithotomy of common bile duct after unsuccessful ERCP without bleeding and pancreatitis-related complications.The symptoms of cholangitis in 3 patients were alleviated after balloon dilation,2 patients had recurrence of cholangitis and were cured by Roux-en-Y cholangioenterostomy.The mean open surgery time and mean duration of postoperative hospital stay in 5 patients were 85 minutes (range,60-150 minutes) and 10 days (range,8-14 days),respectively.All the 12 patients were followed up with a median time of 38 months (range,8-90 months).During the follow-up,10 patients survived well without recurrence of cholangitis and cholelithiasis.Two patients had recurrence of cholangitis at postoperative month 2 and month 14,including 1 patient with the recurrence of common bile duct sand-like stones,and they were readmitted to hospital and treated by Roux-en-Y cholangioenterostomy without recurrence by follow-up.Conclusions The clinical symptoms of ectopic opening of the common bile duct in the duodenal bulb included recurrence of cholangitis,duodenal ulcer history,pain in the right hypochondriac region of the abdomen,skin yellowing sclera,abnormal liver function,crack-like openings in the duodenal bulb by ERCP examination with outflow of bile,cholangiography-guided taper and sickle-shaped end of common bile duct.The treatment should be aimed at the concomitant diseases.

BACKGROUND: Effective treatment for severed acute radiation sickness (over 8 Gy) has not been obtained at present. Mesenchymal stem cells, which are shown to secrete hematopoietic cytokines and support hematopoietic progenitors, play an important role in cute radiation sickness. OBJECTIVE: To investigate the therapeutic potential of non-adherent bone marrow-derived stem cells in the treatment of acute radiation injury induced by 8.5 Gy X-ray irradiation, as wel as the mechanisms involved. METHODS: Non-adherent marrow-derived stem cells from the long bone of fetal limbs were col ected for analyzing surface antigens, cel cycle, osteogenic and adipogenic differentiation potential, and expressions of vascular endothelial growth factors and Annexin A2. After being exposed to 8.5 Gy total body irradiation, BALB/C mice were randomly assigned into transplantation group and control group. Mice in the transplantation group were given 3×106 CFDA-SE labeled human non-adherent bone marrow-derived stem cells, and those in the control group were given 0.3 mL normal saline. Then, the survival rate, peripheral white blood cells at different time, pathologic change and angiogenesis of the bone marrow were observed. RESULTS AND CONCLUSION: After X-ray irradiation, transplanted non-adherent mesenchymal stem cells appeared to have a homing to the site of injury. The survival rate of mice in the transplantation group was much higher than that in the control group. Compared with the control group, the white blood cells in the transplantation group decreased more slowly while recovered more rapid: the nadir appeared at day 14 after transplantation while it recovered within 30 days. The bone marrow of mice in the transplantation group regenerated more actively and had more hematopoietic islands than those in the control group on day 21. In addition, bone marrow angiogenesis of the transplantation group was more obvious than that of the control group. In conclusion, human fetal non-adherent bone marrow-derived stem cells could promote bone marrow angiogenesis in a mouse model of acute radiation injury, through which they could play an important role in tissue regeneration of acute radiation injury.

Objective To analyze the clinical manifestation of diffusive alveolar hemorrhage in acute leukemia induction therapy.Methods Clinical data of two diagnosed cases of diffusive alveolar hemorrhage secondary to acute leukemia were collected.Clinical data of eight cases of diffusive alveolar hemorrhage secondary to acute leukemia which were published were also collected by searching in Medline database.The clinical manifestation,diagnosis,strategy of differential diagnosis and treatment of diffusive alveolar hemorrhage secondary to acute leukemia were analyzed.Results Diffusive alveolar hemorrhage was a rare but fatal complication of acute leukemia.The common clinical manifestations included hemoptysis,progressive dyspnea and progressive decrease in concentration of hemoglobin.The analysis of blood gas showed type Ⅰ respiratory failure.The manifestations of chest computed tomography included diffusive ground glass opacity and infiltration of parenchyma.The bronchoalveolar lavage fluid was bloody.And lung biopsy showed congestion of alveoli and capillaritis.The detection for pathogens,vasculitis related antibodies,brain natrium peptide were negative.The mortality of those cases was 40 ％ (4/10).Corticosteroids therapy was effective.The mortality of patients received corticosteroids therapy was 25 ％ (2/8).Conclusion Diffusive alveolar hemorrhage is a rare but fatal complication of acute leukemia.The mortality is high.The key points of therapy are early diagnosis and corticosteroids therapy.

Objective To investigate the clinical significance of serum lactate dehydrogenase (LDH) and its isoenzymes,M or H subunits in the retreated patients with multiple myeloma(MM).Methods 141 medical records of retreated patients with multiple myeloma were collected,and the relationship of LDH and its isoenzymes,subunits with DS staging system,ISS staging system,creatinine,bone marrow plasma cell percentage,immunoglobulin and microglobin was analyzed.Results Serum total LDH activity was not significantly related to DS staging system and ISS staging system.LDH1 percentages was negatively correlated with ISS staging system (P＜0.01),and LDH4 percentages positively associated with ISS staging system (P＜0.05).LDH activity,absolute value of LDH1 ,LDH2,LDH3,LDH4,and H subunits were positively linked to serum creatinine in myeloma kidney disease patients with renal inadequacy (P＜0.05).Both percentage and absolute value of LDH5 were negatively correlated with bone marrow plasma cell percentage (P＜0.01 and P＜0.05 respectively).Conclusion The detection of serum LDH isoenzyme is more valuable than total LDH activity in retreated patients with multiple myeloma.

AIM:To study the effects of transforming growth factor-β_1 (TGF-β_1) on cell apoptosis,cell cycle,production of endogenous TGF-β_1,expressions of P27~(Kip1),cyclin E and bcl-2 mRNA levels in NB4 cells. METHODS:Apoptotic morphological changes were observed by Wright-Giemsa staining. Cell cycle and apoptosis were detected with flow cytometry. Semiquantitative RT-PCR was used to examine the mRNA levels of endogenous TGF-β_1,P27~(Kip1),cyclin E and bcl-2. RESULTS:TGF-β_1 significantly restrained the growth and promoted the apoptosis of NB4 cells. The blockage of NB4 cells treated by TGF-β_1 at concentration of 5 μg/L was in G1 phase. Endogenous TGF-β_1 mRNA expression in NB4 cells was up-regulated when the concentration of exogenous TGF-β_1 was <5 μg/L. Meanwhile,the expression of endogenous TGF-β_1 mRNA was down-regulated when the concentration of exogenous TGF-β_1 was 10 μg/L. After treated with TGF-β_1 at concentration of 5 μg/L,P27~(Kip1) mRNA expression in NB4 cells was up-regulated,cyclin E and bcl-2 were reduced. CONCLUSION:TGF-β_1 is able to induce apoptosis and cell cycle distribution abnormally in NB4 cells by (1) Up-regulation of endogenous TGF-β_1,so that NB4 cells was induced into apoptosis through consequently high expression of P27~(Kip1). (2) TGF-β_1 may lead to cell cycle arrest by inhibiting the expression of cyclin E directly,or by inhibiting the activity of cyclin E through the increased expression of P27~(Kip1). (3) Down-regulation of bcl-2 induces apoptosis of NB4 cells.