Objective To study the adverse effect of mercury on the tibial nerves of rats. Methods Seventy SD rats (35 females, 35 males, weighed 160-200 g) were randomly divided into 4 groups. 40 rats in group 1 were used to test the acute toxicity of HgCl2, 10 rats in group 2 were given HgCl2 by gavage at 17 mg/kg(1/4 LD50) daily, in group 3 the dose was 8.5 mg/kg(1/8 LD50), 10 rats in group 4 were treated with 0.9% saline 2 ml by gavage daily, the experimental duration was (20?4) days. When the model had been developed, all the male rats were killed and the female rats in group 2 and 3 were given the chelator(DMPS) by intraperitoneal injection at 28 mg/kg for 2 periods of treatment, then were killed and the tibial nerves were examined with the electronic microscope. Results The oral LD50 of HgCl2 was 68.1 mg/kg. Seven rats in group 2 (7/10) were poisoned and two of them got pain manifestation. Six rats in group 3(6/10) were poisoned. Myelinoclasis and the changed axons were found in the tibial nerves of poisoned rats and it was more serious in the rats with pain. The chelator(DMPS) did not relieve the change. Conclusion Sub-acute poisoning of HgCl2 can induce degeneration of tibial nerves in SD rats .

Objective To investigate the effect of HgCl2 and drugs on the expression of calcitonin gene related peptide(CGRP) in the spinal cord and dorsal root ganglion(DRG).Methods Forty male SD rats(180-220 g) were randomly divided into 7 groups,5 in each treated group,10 in the control.Group A(high HgCl2),B(high HgCl2 +DMPS),C(high HgCl2+DMPS+ carbamzepine) were administrated with HgCl2 at the dose of 17 mg/kg(1/4 LD50),group D(low HgCl2),E(low HgCl2+DMPS),F(low HgCl2+NS) at the dose of 8.5 mg/kg(1/8 LD50),by gavage,once a day,the control group treated with normal saline(NS) in the same way.The sub-acute mercury poisoning models were developed within 18-22 days.Then five rats of control group and group A and D were killed and group B and E were treated with the chelator(DMPS) by intraperitoneal injection at the dose of 28 mg/kg for 2 periods.Group C was given DMPS+ carbamzepine and group F was given NS only.The carbamzepine was used at the dose of 16.82 mg/kg by gavage daily for 14 days.The spinal cord(L5-6) and the DRG of L5 and L6 were collected after the treatment finished.The immunohistochemistry SABC way was used to detect CGRP.Results The CGRP level in spinal cord and DRG of the rats exposed to HgCl2 increased significantly compared with the control group(P

Objective To analyze cancer incidence and mortality in Fujian in 2012 and to provide sci-entific basis for tumor prevention .Methods In accordance with the methods and criteria of data quality control made by NCCR,7 regristries data qualified from 9 submitted regritries in Fujian after data assessment were mer-ged and analyzed.Results In 2012,the cancer incidence rate was 251.44/105 (308.44/105 in male and 193.03/105 in female),age standardized incidence by Chinese standard population (ASR China)and by world standard population(ASR world)were 205.15/105 and 201.11/105.The cumulative incidence(0~74 age)was 23.51%.The mortality rate was 161.85/105(220.87/105 in male and 101.37/105 in female).ASR China and ASR world were 128.54/105 and 127.70/105 the cumulative incidence(0~74 age)was 15.04%.The age-spe-cific incidence and mortality reached maximum value in 75 ages and 80 ages respectively .The top 5 cancer inci-dences were lung cancer ,stomach cancer ,liver cancer ,esophagus cancer and breast cancer .The top 5 cancer mor-tality were lung cancer ,liver cancer ,stomach cancer ,esophagus cancer and colorectum cancer .Conclusion Di-gestive malignancies ,lung cancer ,and breast cancer in female were the most frequent in Fujian province ,and the prevention and control for those cancers should be enhanced .

Objective To observe the anatomical constant sign of the parapharyngeal space operation via endoscopy-assisted transoral approach,and provide evidence for the treatment of the lesions of the pharyngeal space and improve the success rate of the operation. Methods CT multi plane reconstruction and three dimensional reconstruction were performed on 10 fresh dead bodies who were acquired from January 2015 to September 2015,the structure of the lateral pharyngeal space was observed,and the parapharyngeal space operation was performed via endoscopy-assisted transoral approach.Results The CT images showed that dispharynx of very low density extended posterior-lateral into the pharyngeal recess,lateral pharyngeal space located in the lateral pharyngeal recess,a low density triangular shadow with a nar-row of the front and width in the back,wing within muscles,wing outside muscles,masseter and temporal muscle located in the lateral pharyn-geal side clearance,which showed a medium density shadow,styloid process located in the front shadow of pharynx side clearance,the back of the internal carotid artery of pharynx side clearance,which showed medium density shadow.The blood vessels in the pharyngeal space and the nerve development was not clear.Stem styloid located in the temporal bone of the skull base drum subordinates,with length of (24.98 ± 2.01)mm,the internal structures of parapharyngeal space located in styloid process and around the surface of the deep muscular,the outside of styloid process had external carotid artery,facial nerve and mastoid.Inside of the base of styloid process had jugular vein foramen and hypo-glossal canal outside hole,the front inner side had carotid canal outside hole,the foramen spinosum,and oval foramen,the rear with stem hole.The distance between left and right side of root of styloid process to adjacent structures was compared,and the difference had no statisti-cal significance(P >0.05).In addition to the root of the styloid process to stylomastoid foramen.The difference of root of styloid process of males to adjacent structure was greater than that of the females,the difference had statistical significance(P <0.05).Conclusion Endo-scopic-assisted transoral approach to the parapharyngeal space operation hasthe styloid process as the marks of anatomy,the distance of styloid process to adjacent anatomical structures is as the reference,which helps to find and identify the parapharyngeal space of peripheral nerve, blood vessel,etc.

[Purpose]To analyze the epidemic characteristics and survival trends of upper gas-trointestinal cancer in Fujian cancer registration areas from 2011 to 2020.[Methods]Cancer regi-stration data in Fujian Province was collected to calculate the crude incidence and mortality rate,age-standardized incidence/mortality rates by Chinese standard population(ASIRC,ASMRC)and by world standard population(ASIRW,ASMRW)and cumulative rate of 0～74 years old of upper gastrointestinal cancer(including esophageal and gastric cancers)as well as the corresponding temporal trends from 2011 to 2020.Using the Joinpoint software to calculate the annual percent-age change(APC)and average annual percentage change(AAPC)to analyze the trends.The data were divided into two time periods(2011-2015 and 2016-2020)to compare the 5-year relative survival rates of upper gastrointestinal cancer.[Results]From 2011 to 2020,there were 26 286 new cases of upper gastrointestinal cancer in Fujian cancer registration areas,accounting for 20.28％of all malignant tumors.The incidence rate,ASIRC and ASIRW of upper gastrointestinal cancer was 56.52/105,42.55/105,and 42.75/105,respectively,and the cumulative incidence rate(0～74 years old)was 5.32％.Incidence of upper gastrointestinal cancer was higher in men than that in women.The incidence of upper gastrointestinal cancer showed an decreasing trend from 2011 to 2020,with an AAPC of ASIRC of-4.7％(95％CI:-6.6％～-2.9％).There were 11 680 new cases of esophageal cancer in Fujian cancer registration areas,the crude incidence,ASIRC,ASIRW and cumulative incidence(0～74 years old)of esophageal cancer were 25.12/105,18.67/105,18.97/105,and 2.32％,respectively.There were 14 606 gastric cancer new cases in Fujian cancer registration areas during 2011-2020,the crude mortality,ASMRC,ASIRW and cumulative mortality(0～74 years old)of gastric cancer were 31.41/105,23.88/105,23.78/105,and 3.00％,respectively.There were 20 133 upper gastrointestinal cancer deaths during 2011-2020 in Fujian cancer registration areas,accounting for 26.05％of all cancer deaths.The crude mortality,ASMRC and ASMRW of upper gastrointestinal cancer was 43.29/105,31.95/105,and 31.89/105,respectively,the cumu-lative mortality rate(0～74 years old)was 3.84％.The mortality of upper gastrointestinal cancer was higher in men than that in women.The mortality rate of upper gastrointestinal cancer showed a trend of first increase and then decrease,with an APC of 3.5％(95％CI:-0.5％～11.3％)from 2011 to 2014 and-5.2％(95％CI:-8.4％～3.7％)from 2014 to 2020.There were 9 643 deaths of esophageal cancer during 2011-2020 in Fujian cancer registration areas.The crude mortality,ASMRC,ASMRW and cumulative mortality rate(0～74 years old)of esophageal cancer was 20.74/105,15.20/105,15.35/105,and 1.83％,respectively.There were 10 490 deaths of gastric cancer dur-ing 2011-2020 in Fujian cancer registration areas.The crude mortality,ASMRC,ASMRW and cumulative mortality rate(0～74 years old)of gastric cancer was 22.56/105,16.75/105,16.54/105,and 2.00％,respectively.The 5-year relative survival rate for upper gastrointestinal cancer patients during 2011-2015 and 2016-2020 were 24.74％(95％CI:23.92％～25.56％)and 25.49％(95％CI:24.65％～26.34％),respectively.The 5-year relative survival rate for esophageal cancer patients during 2011-2015 and 2016-2020 were 17.15％(95％CI:16.10％～18.22％)and 18.72％(95％CI:17.59％～19.88％),respectively.The 5-year relative survival rate for gastric cancer patients during 2011-2015 and 2016-2020 were 30.90％(95％CI:29.71％～32.10％)and 30.76％(95％CI:29.56％～31.97％),respectively.There was a decreasing trend in 5-year survival of upper gastroin-testinal patients with increasing age,with lower survival rate in patients over 65 years old.[Con-clusion]The incidence and mortality of upper gastrointestinal cancer in Fujian cancer registration areas showed an overall decreasing trend,and the 5-year relative survival rate improved slightly,while the disease burden of upper gastrointestinal cancer remains heavy.Incidence and mortality of upper gastrointestinal cancer of men were higher than those of women,and the elderly patients with upper gastrointestinal cancer had a poorer prognosis.Fujian should pay close attention to the prevention and control of gastric cancer among key groups,and strengthen its comprehensive pre-vention and control ability of upper gastrointestinal cancer.

China ; epidemiology ; Humans ; Incidence ; Neoplasms ; epidemiology ; mortality ; Registries

Objective:To estimate the incidence and mortality of corpus uteri cancer in China, 2015.Methods:Quality audit and evaluation of the data from 2015 cancer registration reported by 501 cancer registries were conducted, and 368 cancer registries were included in the analysis. The incidence rate and mortality rate of corpus uteri cancer were calculated according to the factors of the region (urban, rural, east, central, western), sex and age groups. The incidence and mortality of corpus uteri cancer with the 2015 population were estimated. Chinese standard population in 2000 and world Segi′s population were used for the calculation of age-standardized rates (ASR) of incidence and mortality.Results:In 2015, 368 cancer registries included in the analysis covered a total of 309 553 499 populations in China, accounting for 22.52% of the national population. It is estimated that there were about 68 900 new cases of corpus uteri cancer in 2015, the incidence rate was 10.28/10 5, age-standardized incidence rates by Chinese standard population (ASR China) and world standard population (ASR world) were 6.86/10 5 and 6.66/10 5, respectively. The incidence rate of urban area (11.35/10 5) was higher than that of rural area (8.90/10 5), and the incidence of eastern region (12.12/10 5) was higher than the central region (9.94/10 5) and the western region (8.25/10 5). It is estimated that in 2015, there were about 16 000 deaths of corpus uteri cancer, the mortality rate was 2.39/10 5, ASR China was 1.49/10 5, ASR world was 1.47/10 5. The mortality in urban areas (2.40/10 5) is close to rural areas (2.39/10 5); the mortality in central areas (2.55/10 5) was higher than the eastern areas (2.32/10 5) and the western areas (2.31/10 5). Conclusions:In China, the incidence of corpus uteri cancer is on the rise and has a trend of youth, the burden of disease is gradually increasing, which threatens the health of women. Targeted prevention and control measures should be carried out in the different regions.

Objective:To estimate the incidence and mortality of corpus uteri cancer in China, 2015.Methods:Quality audit and evaluation of the data from 2015 cancer registration reported by 501 cancer registries were conducted, and 368 cancer registries were included in the analysis. The incidence rate and mortality rate of corpus uteri cancer were calculated according to the factors of the region (urban, rural, east, central, western), sex and age groups. The incidence and mortality of corpus uteri cancer with the 2015 population were estimated. Chinese standard population in 2000 and world Segi′s population were used for the calculation of age-standardized rates (ASR) of incidence and mortality.Results:In 2015, 368 cancer registries included in the analysis covered a total of 309 553 499 populations in China, accounting for 22.52% of the national population. It is estimated that there were about 68 900 new cases of corpus uteri cancer in 2015, the incidence rate was 10.28/10 5, age-standardized incidence rates by Chinese standard population (ASR China) and world standard population (ASR world) were 6.86/10 5 and 6.66/10 5, respectively. The incidence rate of urban area (11.35/10 5) was higher than that of rural area (8.90/10 5), and the incidence of eastern region (12.12/10 5) was higher than the central region (9.94/10 5) and the western region (8.25/10 5). It is estimated that in 2015, there were about 16 000 deaths of corpus uteri cancer, the mortality rate was 2.39/10 5, ASR China was 1.49/10 5, ASR world was 1.47/10 5. The mortality in urban areas (2.40/10 5) is close to rural areas (2.39/10 5); the mortality in central areas (2.55/10 5) was higher than the eastern areas (2.32/10 5) and the western areas (2.31/10 5). Conclusions:In China, the incidence of corpus uteri cancer is on the rise and has a trend of youth, the burden of disease is gradually increasing, which threatens the health of women. Targeted prevention and control measures should be carried out in the different regions.

[Purpose]To analyze the preliminary screening and follow-up results of the early diag-nosis and treatment program for upper gastrointestinal cancer in rural areas of Fujian Province from 2013 to 2022.[Methods]Screening data from the early diagnosis and treatment program for upper gastrointestinal cancer in Fujian Province from 2013 to 2022 were collected and organized.The positive case detection rate,early diagnosis rate,and treatment rate of the screening population were calculated.SPSS 22.0 software was used to test the trend Chi-square test of the annual changes in detection rate,early diagnosis rate and treatment rate.The Chi-square test was used to compare the detection rate and early diagnosis rate between different groups.[Results]From 2013 to 2022,a total of 26 823 screenings and follow-ups were completed in Fujian Province,with de-tection rate,early diagnosis rate,and treatment rate of 1.41％,56.20％,and 92.61％,respec-tively.The early diagnosis rate showed an increasing trend from 2013 to 2022(P＜0.05).The initial screening detected rate and early diagnosis rate were 1.38％and 55.59％,respectively,while fol-low-up detection rate and early diagnosis rate were 5.36％and 75.00％.The detection rates for esophagus,cardia,and stomach cases were 0.70％,0.15％,and 0.58％,respectively,with early diagnosis rates of 64.86％,53.66％,and 46.41％,respectively.The differences in detection rates and early diagnosis rates for each site were statistically significant(all P＜0.05).[Conclusion]With the development of early diagnosis and treatment of upper gastrointestinal cancer in rural areas of Fujian Province and the improvement of residents'awareness of cancer prevention,the detection rate and early diagnosis rate of upper gastrointestinal cancer in Fujian Province have been im-proved,which plays an important role in improving the survival rate of patients.