Objective To evaluate the cancer risk from trihalmethanes in the reclaimed water using for road clearing and public garden virescence in Beijing.Methods The reclaimed water samples were collected and the concentration of trihalmethanes was determined,the questionnaires were used to investigate the way and level to exposure to THMs for the occupational workers and general populations respectively when the reclaimed water was used in road clearing and public garden virescence,based on this,health risks assessment method was used to evaluate health affect of THMs in reclaimed water on population quantitatively,in 2003.Results Inbreathe and dermal exposure to THMs in reclaimed water were the main ways of exposure for occupational worker and general populations in road clearing and public garden virescence in Beijing.The major components of THMs in the reclaimed water were TCM,BDCM,DBCM and TBM respectively.Conclusion The cancer risk of the occupational workers and general peoples exposure to THMs is less than 1?10-5,lower than the acceptable level documented by USEPA.

The effects of intramuscular or intracerebroventricular injection of penta-gastrin(PG) on the action potential amplitude (APA) of the myocardial cells and the heart rate(HR) were studied. The results were as follows:1 ) Injection of 10?g/10?l of PG into one of the lateral ventricles of the ratfailed to produce any effect on APA or HR. When the dosage of PG was doubled(20?g/10?l), then HR could be slowed down significantly (P

Objective: To study the mechanism of Heshi-Gejiugao on the nerve endocrine immune network in the treatment of perimenopausal syndrome. Methods: A total of 100 patients with perimenopausal syndrome were randomly divided into treatment group and control group, 50 cases in each group. The control group was only given general treatment, while the treatment group was treated with Heshi-Gejiugao on the basis of general treatment for 30 days. The clinical efficacy, Kupperman score, nerve, endocrine and immune related indexes of the two groups before and after treatment were observed. Results: The total effective rate was 96.0% (48/50) in the treatment group and 50.0% (25/50) in the control group. There was significant difference between the two groups (χ²=37.639, P<0.01). The Kupperman score (17.52 ± 2.73 vs. 24.22 ± 6.87, t=6.409) in the treatment group was significantly lower than that in the control group (P<0.01). After treatment, NE (1 878.08 ± 931.57 ng/m vs. 1 278.43 ± 866.32 ng/ml, t=3.331), DA (1 568.56 ± 597.15 ng/ml vs. 1 183.62 ± 798.72 ng/ml, t=2.729) in the treatment group were significantly higher than those in the control group (P<0.05); E₂ (42.12 ± 9.77 pg/ml vs. 35.91 ± 12.55 pg/ml, t=2.761), FSH (62.70 ± 15.96 mIU/ml vs. 72.67 ± 30.18 mIU/ml, t=2.065), LH (33.88 ± 12.18 mIU/ml vs. 42.93 ± 9.83 mIU/ml, t=4.089) were significantly lower than those of the control group (P<0.05). CD3⁺ (1 087.34/μl ± 432.19/μl vs. 918.27/μl ± 199.72/μl, t=2.511), CD4⁺ (738.16/μl ± 326.75/μl vs. 588.43/μl ± 212.55/μl, t=2.716) and CD4/CD8 (1.87 ± 0.56 vs. 1.16 ± 0.55), t=6.483) were significantly higher than those of the control group (P<0.05); CD8⁺ (788.32/μl ± 214.56/μl vs. 976.37/μl ± 318.62/μl, t=3.462) was significantly lower than that of the control group (P<0.05). Conclusions Heshi-Gejiugao can reduce the symptoms and improve the quality of life by regulating the multi target and multi direction of the neuroendocrine immune network of perimenopausal patients.

Objective To explore the impact of MR imaging T2 fluid-attenuated inversion-recovery sequence (MRI T2Flair) excision extension and postoperative chemotherapy in prognosis of patients with glioblastoma (GBM). Methods A retrospective study of clinical data and treatment efficacy of 17 patients with GBM, admitted to our hospital from April 2012 to August 2016, was performed. All patients were performed tumor resection by using awake anesthesia, neuroimage navigation, and intraoperative direct electrical stimulation. The impacts of the resection extent of T2Flair lesions and adjuvant chemotherapy on the prognosis of glioblastoma were analyzed. Results T1 enhanced lesions in these 17 patients were totally resected. The median follow-up duration was 18 months (8 months to 52 months). Median survival time was 20 months; the survival time of patients with resection ranges of 0%-10%, 10%-25% and more than 25% were 19, 22 and 24 months, respectively, without statistical differences (P>0.05). The patients adopted less than 6 courses chemotherapy had a 19-month-long median survival time, and those adopted 6 courses or more courses chemotherapy had a 33-month-long median survival time, with statistically significant difference (P<0.05). Conclusion When T1 enhanced lesions are totally resected, the resection extent of T2Flair lesions has no influence on patients survival time; however, patients accepted 6 or more courses of chemotherapy have a better survival.

Objective:To propose and verify a surgical classification system for the axial primary malignant and aggressive benign tumor.Methods:The CZH surgical classification system was originally developed for the axial primary malignant and aggressive benign tumor. The CZH surgical classification system includes seven types, according to the anatomic features and the extension of tumor violation. A total of 136 patients (79 males and 57 females) with axial primary malignant and aggressive benign tumor from multiple tertiary centers who received surgery from July 2006 to July 2019 were included. The average age was 44.40±17.55 years (8-83 years) old. There were 99 malignant tumors and 37 aggressive benign tumors included. The number of patients with each classification was presented as followed, Type I 13, Type II 15, Type IIIa 3, Type IIIb 20, Type IVa 43, Type IVb 12, Type Va 21, Type Vb 3, Type VI 2, Type VIIa 3 and Type VIIb 1. Surgical procedures were selected according to different types in classification. The inter- and intra-observer consistencies were evaluated by the Kendall's W test. The VAS, Frankel score, overall survival and recurrence free survival were recorded during the follow-up. Results:The inter- and intra-observer consistent coefficient was 0.973 and 0.996, respectively ( P<0.05). The single posterior approach was adopted for the Type II tumors. Other patients underwent surgery by the combined antero-posterior approach. The majority in anterior approach (113 cases) was the modified submandibular approach. The reconstruction modes included anterior "T" shape titanium mesh (112 cases) or the 3D printed prothesis (7 cases) combined with the posterior occipto-cervical fusion (92 cases) or the pedicle screw system (44 cases). The average surgical duration and the volume of intraoperative bleeding was 348.40±136.14 min (60-760 min) and 1 225.69±859.40 ml (80-4 000 ml), respectively. The operation duration and volume of intraoperative bleeding among each type were with statistical difference. The patients with Type IV, V tumors had longer operation duration than those with Type II tumors. Those with Type V and VII tumors had longer operation duration than those with Type I tumors. The patients with Type V tumors had more intraoperative bleeding than those with Type I-IV tumors. The average preoperative VAS score was 4.15±2.25 and then was reduced significantly to 0.62±0.71 and 0.38±0.59 at one and three months after operation, respectively. The Frankel score was also significantly ameliorated at one and three months postoperatively. There were 22 postoperative complications (16.2%). The complications included cerebral spinal fluid leak (12.5%), dysphagia and/or dysphonia (7.4%), dyspnea (5.1%), wound infection (3.7%), wound hemorrhage (2.2%) and pharyngeal dehiscence (1.5%). The incidence of postoperative complication was 25.9% in Type IV-VII tumors, while 11.8% in Type I-III tumors. Conclusion:CZH surgical classification system was verified with high observer consistency. This classification system could assist surgeons to select proper surgical approaches, resection modes and reconstruction modes, and thus ensure the safety of surgery and reduce the recurrence. The tumors in Type IV, V and VII may be with more challenging for surgeons. The incidence of postoperative complication in Type IV-VII tumors may be higher than that in Type I-III tumors.