Objective:To study the radiation dose rate around patients underwent renal dynamic imaging of SPECT with 99Tcm-DTPA, so as to provide the basis for ensuring the radiation safety of the surrounding environment and the general public.Methods: 109 patients who underwent renal dynamic imaging were enrolled in this study, and the radiation dose rates of different time and different distance after 99Tcm-DTPA was injected patients were measured. And then, the changes of dose rate following time and distance were analyzed. Results: At the 0.5h, 1h, 2h, 3h, 6h, and 7h after radiopharmaceuticals were injected patients underwent renal dynamic imaging, the radiation dose rates were 0.76-8.86 μSv/h, 0.68-7.27 μSv/h, 0.57-4.52 μSv/h, 0.56-3.90 μSv/h, 0.23-2.07 μSv/h and 0.21-1.05 μSv/h, respectively, between 0.5 m and 4 m away from patients. At 24h after radiopharmaceuticals were injected, all of radiation dose rates at different distances around patients were same with background values.Conclusion: The radiation dose rates around patients underwent renal dynamic imaging will rapidly decrease with the increasing of time and distance. At 24h after radiopharmaceuticals were injected, all of radiation dose rates at different distances away from patients were same with background values.

Humans ; Male ; Middle Aged ; Pharynx ; pathology ; Pyriform Sinus ; Thyroglossal Cyst ; surgery

Objective To explore the relationship of expression and the effect of preoperative radiotherapy of endothelin-1 (ET-1) and pyruvate kinase M-2 (PKM2) in rectal carcinoma.Methods Immunohistochemical method was used to detect the expression of ET-1 and PKM2 proteins of rectal cancer tissues in 96 cases.The expressions of ET-1 and PKM2 were analyzed with the effect of preoperative radiotherapy in rectal cancer tissue.Results The high expression of ET-1 protein was 59 cases (61.46％).The high expression of PKM2 proteins was 54 cases (56.25％).The high expressions of ET-1 and PKM2 protein were worsen the effect of tumor regressive grade (TRG) than lower expressions of those after preoperative radiotherapy of rectal cancer tissue (P ＜ 0.05).The protein expression of ET-1 and PKM2 were positively correlated (P =0.006).Conclusions The high expressed ET-1 and PKM2 proteins in rectal cancer are closely related to preoperative radiotherapy resistance.ET-1 and PKM2 proteins are expected to become new targets of radiotherapy sensitivity and radiotherapy sensitization of rectal cancer.

Objective Detecting of spermatozoal total RNAs by laboratory on chip gel electrophoresis so that it could provide better total RNAs for the sequent experiments, and spur the development of spermatozoal molecular biology. Methods Sperms of healthy adults were collected and then total RNAs were extracted by RNeasy mini kit(QIAGEN), detection and quality control were performed by loboratory on chip gel electrophoresis system. Meantime, the control RNAs were extracted from lymphocytes. Results It was found that there were a plenty of genes expressed in healthy sperms. Electrophoretic graphs showed that the total RNAs of spermatozoal had 2 bands which went ahead a little comparing to the normal somatic cells. The former peak appeared keenness, and the latter was broad and showed like a reversed U. The ratio of them was largely more than 2, no extra peaks were found in electrophoretic graph. Conclusion A simple,intuitionistic method to detect and control the quality of the healthy adults' spermatozoal total RNAs had been successfully constructed by using laboratory on chip gel electrophorosis.

Objective To observe the effects of Yuanzhi San (YZS) on the ethology and cerebral acetylcholinesterase(AchE) activity of mouse model of memory disorder induced by scopolamine. Methods Sixty mice were randomly divided into six groups, namely blank control group, model group, positive medicine group, and low-dose, middle-dose and high-dose YZS groups. Except for the blank control group and model group were given the normal saline, the mice in other groups were administered with the corresponding drugs for 10 days. And then, mice in the medication groups were given subcutaneous injection of scopolamine in the dose of 3mg/kg to induce memory disorder model. Morris water maze test and step-down test were adopted for the observation of the learning-memory ability of the mice, and at the end of the tests, the activity of AchE in mouse cerebral cortex was measured by a biochemical method. Results Compared with the model group, escape latency was decreased, and retention time and swimming distance in the effective area in Morris water maze test were prolonged in YZS groups (P<0.05); latency in step-down test was also prolonged (P<0.05). YZS had an effect on decreasing AchE activity in the cerebral cortex of model mice (P < 0.05 compared with the model group). However, the differences were insignificant among the medication groups(P>0.05). Conclusion YZS exerts certain effect on improving learning-memory ability of memory disorder mice induced by scopolamine , and the mechanism might be related with the inhibition of AchE activity in the cerebral cortex of model mice.

Ethnicity ; Forensic Medicine ; Humans ; Polymorphism, Genetic

OBJECTIVETo study the prevalence and distribution of Tourette syndrome (TS).

METHODSNine thousand, seven hundred and forty-two children and juveniles aged 7 - 16 years in Wenzhou were studied, using cluster random sampling method.

RESULTSThe prevalence of TS among school-age children was estimated to be 0.43% (0.74% for males and 0.07% for females). The prevalence of male children and juveniles was higher than that of female children and juveniles (chi(2) = 25.09, P < 0.001, prevalence ratio = 10.95, prevalence ratio 95% CI: 3.38 - 35.46). The highest prevalence of TS was between 9 - 10 years old. The mean age at onset of TS was 7.7 +/- 2.7 years, with 45.2% of them among 6 - 7 year olds. The rate of delayed diagnosis and rates of misdiagnosis and misclassification of the syndromes were 78.6%, 42.9% and 23.8%, respectively.

CONCLUSIONTourette syndrome had been a common disease of children and juveniles in Wenzhou area. The disease was correlated with age and sex, often misdiagnosed and misclassified. Physicians and as well as general publics should be trained to identify the cases.

Adolescent ; Age Factors ; Child ; China ; epidemiology ; Cross-Sectional Studies ; Female ; Humans ; Male ; Prevalence ; Sex Factors ; Tourette Syndrome ; diagnosis ; epidemiology

OBJECTIVETo study the epidemiological features of tic disorders (TD) among schoolchildren in Wenzhou area.

METHODSStratified cluster sampling was carried out to investigate TD in 9742 schoolchildren aged 7 to 16 years old in Wenzhou.

RESULTSThe average prevalence rate of TD among school-age children was 104/10 000 (166/10 000 for males, 29/10 000 for females). There was a significantly higher prevalence rate for males than that for females (chi(2) = 43.96, P < 0.001, prevalence ratio = 5.7, prevalence ratio 95% CI: 3.20 - 10.30). The prevalence rates of clinical subtypes in males was significantly higher than that of females while pupils was significantly higher than that in high school students (chi(2) = 11.33, P < 0.01, prevalence ratio = 2.2, prevalence ratio 95% CI: 1.37 - 3.43). Prevalence rate of transient tic disorders (TTD), chronic motor vocal tic disorder (CMVTD), tourette syndrome (TS) were 34/10 000, 27/10 000 and 43/10 000 respectively with the highest among 9-10 years old group. The mean onset age of TD was 8.5 +/- 2.8 years. The peak of onset was among 6-10 year olds. The rate of delayed diagnosis of the disorders was 69.3% and the median in delayed diagnosis was 1.0 year.

CONCLUSIONTD is a common disease with high rate of misdiagnoses among schoolchildren in Wenzhou area. Physicians and population should be trained to identify the syndromes and to practice correct diagnosis and effective treatment as early as possible.

Adolescent ; Child ; China ; epidemiology ; Cross-Sectional Studies ; Female ; Humans ; Male ; Prevalence ; Sex Factors ; Tic Disorders ; epidemiology ; prevention & control ; Tourette Syndrome ; epidemiology ; prevention & control

OBJECTIVETo study the humoral immunity reconstitution and its relationship with infection in patients with multiple myeloma (MM) after undergoing autologous hematopoietic stem cell transplantation (auto-HSCT).

METHODSForty-two MM patients undergoing auto-HSCT were included in this study. Peripheral blood were obtained for immunoglobulin detection, including IgG, IgA and IgM before transplantation and 1, 3, 6, 12, 18 and 24 months after transplantation. The time, type, pathogen of infection between 1 and 24 month after transplantation were analyzed.

RESULTSThe level of IgA at 6 month [(0.75±0.59) g/L] after auto-HSCT was lower than that of pre-auto-HSCT [(1.04±0.70) g/L], and reached the level of pre-auto-HSCT at 9 months [(0.99±0.52) g/L] after auto-HSCT. The level of IgM reached the level of pre-auto-HSCT [(0.45±0.26) g/L] at 3 months after auto-ASCT [(0.50±0.26) g/L]. The level of IgG reached the level of pre-auto-HSCT [(9.80±2.98) g/L] at 1 month after auto-HSCT [(11.09±2.69) g/L], and higher than that of pre-auto-HSCT at 9 months after auto-HSCT [(12.07±3.57) g/L]. The level of IgG with IgG-type MM was higher than that of patients with light-chain type and IgD-type MM at 6, 9 and 12 months after auto-HSCT. The IgA level of patients who obtained complete remission (CR) is much higher than that of patients who obtained nCR in IgG-type patients. The incidence of infection in 6 month after auto-HSCT was higher than that of (6-12) month and >12 month after auto-HSCT. The incidence of infection was strongly negative correlated with IgA (r =-0.943, P=0.005) and IgG (r=-0.943, P=0.005) level. The frequency of viral infection was also negatively correlated with IgA and IgG.

CONCLUSIONThe reconstitution time of IgG, IgA and IgM was different in MM patients after auto-HSCT. IgG recovered first, then IgM, and IgM the last. The incidence of infection was negatively correlated with IgA and IgG. With the recovery of IgG and IgA, the incidence of infection was decreased accordingly.

Adult ; Aged ; Female ; Hematopoietic Stem Cell Transplantation ; Humans ; Immunity, Humoral ; Male ; Middle Aged ; Multiple Myeloma ; immunology ; therapy ; Transplantation, Autologous ; Virus Diseases ; immunology

OBJECTIVETo study the clinical characteristics of acute myocardial infarction (AMI) among younger adults and to explore the possible mechanisms of early myocardial infarction, combined with the newly discovered risk factors of coronary heart disease.

METHODSData on comparative analysis to the exposure rates of the risk factors and inducing factors of non-CAD patients with two groups of AMI patients including younger adults group (< or =40 years old) and aged adults group (> or =50 years old). Coronary angiography was applied.

RESULTSThere were differences noticed between the frequencies of risk factors of the two AMI groups. In younger adults group the exposure rates of smoking, hyperlipidemia, positive family history, C-reactive protein (CRP) and fibrinogen were markedly higher, while in elderly group the exposure rates of hypertension, smoking, hyperlipidemia, diabetes, CRP, fibrinogen and homocysteine (HCY) were markedly higher (P < 0.05). Although the clustering status of risk factors of the younger adult group was not higher than that of the elderly group. There were obvious inducing factors before the patients were attacked by AMI and the inducing factors inclined to cluster, which had obvious dose-reaction relationships with the occurrence of AMI in young people.

CONCLUSIONEarly AMI of younger adults might relate to the clustering status of inducing factors. The coexistence of several kinds of inducing factors was resulted in the occurrence of AMI of the atherosclerosis (As) and non-As patients by means of myocardial ischemia accumulation effect.

Adult ; Age Factors ; Aged ; Atherosclerosis ; epidemiology ; China ; epidemiology ; Coronary Angiography ; Humans ; Middle Aged ; Myocardial Infarction ; epidemiology ; pathology ; Myocardial Ischemia ; epidemiology ; Risk Factors