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1.
China Occupational Medicine ; (6): 351-355, 2021.
Article in Chinese | WPRIM | ID: wpr-923177

ABSTRACT

OBJECTIVE: To analyze the distribution characteristics of surveillance results of key occupational diseases in Nanning City.METHODS: The occupational health monitoring data of key occupational diseases of Nanning City from 2015 to 2019 were collected using judgment sampling method and analyzed by descriptive epidemiology method. RESULTS: A total of 38 cases of key occupational diseases were reported in Nanning City during the past 5 years.The main diseases were occupational pneumoconiosis and occupational noise-induced deafness(ONID). The rate of occupational health examination was 40.06%, showing an increasing trend with the increase of years(P<0.01). The detection rate of occupational pneumoconiosis was higher than that of ONID(0.19% vs 0.01%, P<0.01). However, the abnormal detection rate of occupational health special examination in noise-exposed workers was higher than that in dust-exposed workers(10.98% vs 0.35%, P<0.01). The detection rate of pneumoconiosis-like changes in dust-exposed workers was the highest in private enterprises(P<0.01). The detection rate of binaural high frequency average hearing threshold ≥40 dB was highest in small and micro enterprises and private enterprises(all P<0.01). The detection rate of blood lead level >400 μg/L was 24.75%, and 98.80% of the abnormal workers were concentrated in medium-sized foreign-funded enterprises. The detection rates of abnormal leukocyte, neutrophil and platelet counts in benzene-exposed workers were 1.17%, 3.21% and 0.26% respectively. CONCLUSION: Among the key occupational disease risk factors in Nanning City, the number of workers exposed to dust and noise is relatively high, which results in serious consequences and harm. But the hazards of lead and benzene cannot be ignored. Emphasis should be placed on strengthening the supervision and management of key occupational diseases in small and medium-sized micro-enterprises and private enterprises.

2.
Article in Chinese | WPRIM | ID: wpr-802866

ABSTRACT

Objective@#To summarize the treatment and prognosis of children with primary vesicoureteric reflux (PVUR) and the correlation between PVUR and urinary tract infections(UTI).@*Methods@#The children with PVUR (72 cases) who were hospitalized at the Department of Nephrology and Urology of Children′s Hospital Affiliated to Capital Institute of Pediatrics from June 2007 to April 2018 were selected, and the clinical manifestations were summarized.@*Results@#A total of 72 patients (52 boys, 20 girls) were involved, and the median age at diagnosis was 8 months, in which 44 cases (61.1%) were less than 1 year old.There were 55 cases with UTI onset (76.4%), 94.5%(52/55 cases) with recurrent UTI(twice or more than twice) and 2 cases (2.8%) ended with renal failure.Refluxes were unilateral in 34 patients and bilateral in 38 patients.There were 110 ureters, in which 74 reflux ureters (67.3%) were identified as low-grade (Ⅰ-Ⅲ) PVUR, and 36 reflux ureters(32.7%) were high-grade (Ⅳ-Ⅴ) PVUR.Forty patients received conservative treatment, and significant differences of the remission rate were observed between group Ⅰ-Ⅱ grade PVUR(72.2%, 13/18 cases) and group Ⅲ-Ⅴ grade PVUR(32.5%, 13/40 cases)(χ2=7.92, P=0.005). Twenty-two patients (35 reflux ureters) underwent surgical treatment, in which 31 ureters were cured, and the remission rate was 88.6%.Ten patients with refluxes grade Ⅲ or above had no improvement after medical treatment, but the reflux was completely relieved after surgical treatment.@*Conclusions@#Children with recurrent UTI, especially less than 1 year-old, should be considered with PVUR.The conservative treatment could be prior for the patients with Ⅰ-Ⅱ grade PVUR.The surgical treatment could be chosen for those patients who suffered from high-grade PVUR, bilateral reflux or failed conservative treatment, especially with recurrent UTI, and reflux nephropathy could be reduced then.

3.
National Journal of Andrology ; (12): 700-704, 2018.
Article in Chinese | WPRIM | ID: wpr-689727

ABSTRACT

<p><b>Objective</b>To evaluate the quality of the donor semen in Chongqing Human Sperm Bank and the influence of age on semen parameters.</p><p><b>METHODS</b>We collected semen samples from 899 donors in Chongqing Human Sperm Bank and divided them into five groups according to the age of the semen donors: 22-25, 26-30, 31-35, 36-40, and >40 years old. Using the Makler Counting Chamber, we measured the semen volume, percentage of progressively motile sperm (PMS), total motile sperm, sperm concentration, total sperm count per ejaculate, and percentage of morphologically normal sperm (MNS). Then, we compared the semen parameters obtained with the fifth percentile and median reference values published in the WHO Laboratory Manual for the Examination and Processing of Human Semen-5th Ed (WHO 5th Ed) and among different age groups using the Kruskall-Wallis H test.</p><p><b>RESULTS</b>The semen volume (1.8 ml), sperm concentration (25.0 × 10⁶/ml), total sperm count (100.7 × 106/ejaculate) and MNS (4.3%) in the semen samples of the 899 donors were obviously higher than the fifth percentile values published in the WHO 5th Ed, and so were the first three parameters (4.0 ml, 88.0 × 10⁶/ml, and 333.7 × 106/ejaculate) than the WHO median reference values. PMS (31.0%) and total motile (38.0%) were lower than the WHO fifth percentile values and so was MNS (11.6%) than the WHO median reference value. PMS (55.0%) and total motile sperm (61.0%), however, were coincident with the median reference values of WHO 5th Ed. Statistically significant differences were observed among the 22-25, 26-30, 31-35, 36-40 and >40 years old groups in perm concentration (88.0 [1.0-270.0] vs 96.0 [5.0-335.0] vs 100.0 [3.0-200.0] vs 105 [15.0-225.0] vs 90.0 [22.0-159.0] × 10⁶/ml, P < 0.05), but not in the semen volume, PMS, total sperm motility, total sperm count or MNS (P > 0.05).</p><p><b>CONCLUSIONS</b>The donor semen in Chongqing Human Sperm Bank is generally of high quality. Sperm concentration significantly increases with age but decreases in men aged >40 years.</p>

4.
National Journal of Andrology ; (12): 504-508, 2018.
Article in Chinese | WPRIM | ID: wpr-689701

ABSTRACT

<p><b>Objective</b>To investigate bacterial infection and the distribution of different bacterial species in the donor semen and the influence of different bacterial counts on semen quality.</p><p><b>METHODS</b>Bacterial colonies in the semen samples from 1 126 donors were counted with the Synbiosis Protocol 3 Automatic Colony Counter and the bacterial species with a colony count ≥10⁴ cfu/ml identified with the VITEK2 Compact Automatic Biochemical Analyzer. The Makler Sperm Counting Board was used to examine the semen quality of the semen samples with a colony count = 0 cfu/ml (n = 22, group A), those with a colony count <10⁴ cfu/ml (n = 22, group B) and those with a colony count ≥10⁴ cfu/ml (n = 22, group C). Univariate analysis was employed for comparison of semen quality among different groups.</p><p><b>RESULTS</b>Among the 1 126 donor semen samples cultured, 5 (0.44%) showed mixed bacterial contamination and 993 (88.58%) showed none but with growth of a certain species of bacteria, 2.22% (22/993) with a colony count ≥10⁴ cfu/ml, mainly including Streptococcus bovis, tiny bacilli, Staphylococcus epidermis, and Staphylococcus aureus, among which gram-positive and gram-negative bacteria accounted for 95.45% (21/22) and 4.54% (1/22), respectively. Compared with group A, groups B and C manifested significantly reduced total sperm count ([567.5 ± 327.6] vs [421.9 ± 155.9] and [389.9 ± 110.6] × 106 per ejaculate, P <0.05) and percentage of progressively motile sperm ([65.0 ± 6.5] vs [61.0 ± 3.5] and [61.6 ± 4.3] %, P <0.05). There were no statistically significant differences among the three groups in the semen liquefaction time, semen pH value, total sperm motility or percentage of morphologically normal sperm (P > 0.05). Of the 284 randomly selected semen samples, 34 (11.97%) were found positive for Ureaplasma urealyticum (UU) and no significant difference was observed in the semen quality between the UU-positive and UU-negative samples (P> 0.05).</p><p><b>CONCLUSIONS</b>The bacteria-positive rate is high in the donor semen and the bacterial species are varied, mainly including gram-positive bacteria. Semen quality is reduced with the increased number of bacterial colonies.</p>


Subject(s)
Analysis of Variance , Bacteria , Classification , Bacterial Load , Humans , Male , Semen , Microbiology , Semen Analysis , Sperm Count , Sperm Motility , Spermatozoa , Tissue Donors , Ureaplasma urealyticum
5.
China Pharmacy ; (12): 1516-1518, 2017.
Article in Chinese | WPRIM | ID: wpr-513365

ABSTRACT

OBJECTIVE:To investigate clinical efficacy and safety of levetiracetam add-on therapy in the treatment of elderly epileptic patients. METHODS:Totally 88 elderly epileptic patients in Chongqing Yunyang County Hospital of TCM during Jan. 2014-Jan. 2016 were divided into observation group and control group according to random number table,with 44 cases in each group. Control group was given routine antiepileptic therapy of carbamazepine+phenobarbital;observation group was additionally given Levetiracetam tablet with initial dose of 0.25g,increasing to 0.5 g according to disease condition,bid,on the basis of con-trol group. Treatment courses of 2 groups lasted for 6 months. Clinical efficacies,GCS score,Barthel index score,MoCA score and the occurrence of ADR were observed in 2 groups. RESULTS:Total response rate,control rate and MoCA score of observation group were significantly higher than those of control group,with statistical significance(P<0.05). GCS and Barthel index score of 2 group after treatment were significantly higher than before treatment,and those 2 scores of observation group were significantly higher than those of control group,with statistical significance (P<0.05). No obvious ADR was found in 2 groups. CONCLU-SIONS:Levetiracetam add-on therapy is better than routine therapy plan in the treatment of elderly epilepsy,and significantly re-duce coma degree,increase daily living ability and cognitive function with good safety.

6.
Article in Chinese | WPRIM | ID: wpr-511183

ABSTRACT

Objective To investigate the better medical resource allocation scheme by analyzing the overall situation and regional characteristics of intraocular lens diopter in cataract patients on Lifeline Express.Methods The total of 27 663 patients data from seven administrative regions of China on cataract surgery in China Lifeline Express from 2014 to 2016 were collected.All diopter values of IOL were recorded to grasp the overall distribution of IOL diopter in cataract patients,and the distributive difference among administrative regions was analyzed.Results The distribution of IOL diopter in 27 663 cataract patients presented a skewed trend,with peak value in 21-<22 D.The greater frequency of IOL diopter was mainly concentrated in 19-<24 D,accounting for 72.48% of the total.The IOL diopter peak was present in 22-< 23 D in Northeast China,North China,Central China,East China,and the overall waveform offset to a large degree direction.The IOL diopter peak was present in 21-< 22 D in Northwest,Southwest,South China,and the overall waveform showed the trend of small degree direction.The occurrence frequency of IOL with diopter < 10 D was significantly more obvious in Northwest,Northeast China,North China and East China.At the same time,the occurrence frequency of IOL with diopter ≥25 D was significantly more obvious in Central China,Northeast China,East China,North China.Conclusion The IOL diopter values of cataract patients in different administrative regions present a skewed distribution and there are subtle differences between different regions.The results can provide the basis for resource allocation for large scale cataract surgery in each area.

7.
Recent Advances in Ophthalmology ; (6): 677-679,683, 2017.
Article in Chinese | WPRIM | ID: wpr-616692

ABSTRACT

Objective To analyze the adverse drug reaction of intravitreal conbercept injection for the security of conbercept injection in clinical application.Methods From 2014 to 2016,248 cases of adverse drug reaction caused by intravitreal conbercept injection were monitored by 62 medical institutions from National Center for Adverse Drug Reaction Monitoring China,and analyzed in this study.Results The adverse drug reactions caused by conbercept were mainly observed in the ophthalmology system,skin system,musculoskeletal system and cardiovascular system.The adverse drug reactions mainly occurred in the early stage of injection.Among those patients,the reported treatment results were cured in 126 cases,improved in 120 cases,unchanged in 1 case,unknown in 1 case,and no anyone died.Conclusion It should give a great attention to the serious adverse reaction that caused by conbercept injection,especially for endophthalmitis,retinal detachment and vitreous hemorrhage.The incidence of serious and newly observed adverse drug reaction should be two important portions of post-marketing safety surveillance.Moreover,the quality of adverse drug reaction reports from different medical institutions needs to be improved.Their assessment and management should be enhanced.

8.
Article in Chinese | WPRIM | ID: wpr-328257

ABSTRACT

<p><b>OBJECTIVE</b>To observe the effect of Pinggan Qianyang Recipe (PQR) on inhibiting angiotensin II (Ang II) induced proliferation and migration of vascular smooth muscle cells (VSMCs) and changes of DNA methylation.</p><p><b>METHODS</b>VSMCs were cultured using tissue explant method, and PQR containing serum was prepared. Primarily cultured VSMCs were divided into four groups, the normal group, the model group, the folate group (folic acid intervention) , and the PQR group. The proliferation and migration of VSMCs was duplicated by Ang II. After 24-h Ang II induced culture, 40 microg/mL folic acid was added to the folate group for 48 h, while 5% PQR containing serum was added to the PQR group for 48 h. The cell growth curve of VSMCs was drawn by using Cell Counting Kit (CCK-8). The proliferative activity of VSMC was determined by MTT assay. The migration of VSMCs was measured by Millicell chamber. The general level of cytosine methylation in cell nucleus was detected via 5-mC antibodies immunofluorescence, and mRNA expression levels of DNA methyltransferase 1 (DNMT1) were measured by Real-time q-polymerase chain reaction (q-PCR).</p><p><b>RESULTS</b>VSMCs were promoted by Ang II at 10(-6) mol/L for 24 h. Compared with the normal group, the proliferative activity and migration quantity of VSMCs obviously increased, and DNA methylation level obviously decreased (P < 0.05, P < 0.01). Compared with the model group, the cell growth, proliferative activity and migration quantity of VSMCs obviously decreased and the general DNA methylation level increased in the folate group and the PQR group (P < 0.05, P < 0.01). Compared with the normal group, the mRNA expression of DNMT1 decreased in the model group (P < 0.01). Compared with the model group, mRNA expression of DNMT1 in Ang II induced VSMCs was obviously enhanced in the folate group and the PQR group (P < 0.01).</p><p><b>CONCLUSIONS</b>PQR could inhibit Ang II induced proliferation and migration of VSMCs, and cause high genomic DNA methylation level. Changes of DNA methylation might be associated with DNMT1 expression.</p>


Subject(s)
Angiotensin II , Pharmacology , Cell Movement , Cell Proliferation , Cells, Cultured , DNA (Cytosine-5-)-Methyltransferase 1 , DNA (Cytosine-5-)-Methyltransferases , Metabolism , DNA Methylation , Drugs, Chinese Herbal , Pharmacology , Humans , Muscle, Smooth, Vascular , Cell Biology , Myocytes, Smooth Muscle , Cell Biology
10.
Article in Chinese | WPRIM | ID: wpr-297392

ABSTRACT

<p><b>OBJECTIVE</b>To observe the efficacy and safety of Danlong Oral Liquid (DOL) combined Western medicine (WM) in treating mild-to-moderate bronchial asthma patients (heat wheezing syndrome) at acute onset.</p><p><b>METHODS</b>Totally 480 mild-to-moderate bronchial asthma patients (heat wheezing syndrome) at acute onset were randomly assigned to two groups in the ratio 3:1, the treatment group (360 cases) and the control group (120 cases). All patients received basic WM treatment. Patients in the treatment group took DOL, 10 mL each time, 3 times per day for 7 days in total, while those in the control group took Kechuanning Oral Liquid (KOL) , 10 mL each time, 3 times per day for 7 days in total. Efficacy for asthma symptoms, lung functions and scores of TCM syndrome and/or main symptoms were evaluated.</p><p><b>RESULTS</b>The percentage of clinical control and significant effectiveness of asthma symptoms in the treatment group was significantly higher than that of the control group (77.36% vs 56.07%, P < 0.01). The percentage of clinical control and significant effectiveness of lung functions in the treatment group was significantly higher than that of the control group (74.28% vs 50.00%, P < 0.01). The anterior-posterior difference in scores of TCM syndrome was significantly superior in the treatment group than in the control group (-11.26 ± 4.70 vs -9.21 ± 5.09, P < 0.01). The anterior-posterior difference in scores of main symptoms was significantly better in the treatment group than in the control group (-6.58 ± 3.08 vs -5.16 ± 3.45, P < 0.01). The incidence of adverse reactions was significantly lower in the treatment group than in the control group [1.73% (6/346 cases) vs 10.17% (12/118 cases) , P < 0.05].</p><p><b>CONCLUSION</b>DOL combined WM was superior to KOL in treating mild-to-moderate bronchial asthma patients (heat wheezing syndrome) at acute onset.</p>


Subject(s)
Anti-Asthmatic Agents , Therapeutic Uses , Asthma , Drug Therapy , Biomedical Research , Drug Therapy, Combination , Methods , Drugs, Chinese Herbal , Therapeutic Uses , Hot Temperature , Humans , Lung , Medicine, Chinese Traditional , Phytotherapy , Respiratory Sounds , Syndrome
11.
Article in Chinese | WPRIM | ID: wpr-466246

ABSTRACT

Objective To understand the functional status and radiation protection requirements of helical tomotherapy (TOMO) unit when it is applied in clinic treatment so as to promote the construction of TOMO quality control system.Methods A helical tomotherapy unit with a type of tomotherapy Hi-Art was employed as the radiotherapy unit.A series of tests and analyses on dosimetric and radiation safety performance parameters of the TOMO unit were conducted with the use of a A1SL ionization chamber,a set of solid water equivalent phantoms and other test equipments.The performance parameters were compared with that of a conventional 6 MV accelerator with a type of ARTISTE.Results The deviations of static and dynamic output dose were-1.51% and 1.18%,respectively.The values of PDD10/PDD1.5 and PDD20/PDD1.5 were 0.608 and 0.318 within the range of X-ray quality parameters calibration.Under the different field conditions of 40 cm × 5 cm,40 cm × 2.5 cm and 40 cm × 1 cm,the stability of transverse/longitudinal dose distribution curve was no more than 1.20% and the offset distance of Jaw width was smaller than 0.5 mm.Radiation leakage ratio of the treatment rotating center from the muhileaf collimator (MLC) was 0.20%.No matter the average or the maximum value of the leakage radiation from couch plane was less than 0.02%.Conclusions The performances and testing requirements of TOMO unit are different from a conventional electron linear accelerator,the quality control index of TOMO unit should be set seperately and tested strictly in terms of the specific requirements of the unit by complying with the QC programme.The reliable quality control system should be established and effectively implemented to serve the radiotherapy quality and radiation safety effectively in the tomotherapy.

12.
International Eye Science ; (12): 678-680, 2015.
Article in Chinese | WPRIM | ID: wpr-637245

ABSTRACT

AIM: To compare the efficacy of different locations scleral tunnel incision in phacoemulsification cataract on preoperative corneal astigmatism. METHODS:Totally 90 patients (94 eyes) in our hospital who had undergone the phaco-surgery from March 2013 to October 2014 were divided into two groups. The group A was those with 3. 2mm scleral tunnel incision at the direction of 10:00 ~11:00 points. The group B was those with 3.2mm scleral tunnel incision at the steepest corneal meridian. Incision was not sutured. Corneal astigmatism status of preoperative and postoperative at different times were detected by corneal refractive. The impact of different surgical incision on postoperative corneal astigmatism was compared. In the two groups, patients with preoperative corneal astigmatism 2. 00D were compared respectively. The changes of the uncorrected visual acuity and corneal astigmatism at postoperative 1wk, 1 and 3mo were observed. RESULTS:The uncorrected visual acuity of the patients who were in the group B preoperative corneal astigmatism CONCLUSION: On the basis of preoperative corneal astigmatism, 3. 2mm scleral tunnel incision at the steepest corneal meridian to some extent can correct preoperative corneal astigmatism < 1. 00D, and accordingly improve the uncorrected visual acuity.

13.
Article in Chinese | WPRIM | ID: wpr-453894

ABSTRACT

Objective To investigate the radiation dose levels to the adults examined from diagnostic exposure in Beijing. Methods The radiation doses to the examined individuals were measured by using individual diagnostic radiology equipments in 30 random hospitals from a total of 10 districts and suburban areas, including 1 182 samples of X-ray photography,542 samples of mammography and 410 samples of CT examination. Results 2 134 samples were measured in this study. The dose ranges of X-ray photography, CR, and DR were 0?4 -24?1, 0?3 -13?9 and 0?1 -15?9 mGy, respectively. The average dose range of glandular breast was 0?3-5?4 mGy. In 410 CT samples the value of CTDIw , CTDIvol and DLP were 28?1 - 96?3 mGy, 7?0 - 23?4 mGy, and 162?2 - 898?1 mGy·cm, respectively. Conclusions Several dose levels from diagnostic examination were higher than guidance level for medical exposure in GB 18871-2002,which should be noted.

14.
Singapore medical journal ; : e250-3, 2013.
Article in English | WPRIM | ID: wpr-337810

ABSTRACT

Leigh's syndrome, which is characterised by progressive neurodegeneration involving the brainstem and basal ganglia, belongs to a family of disorders classified as mitochondrial myopathies. It is most commonly transmitted by an autosomal recessive mode of inheritance, but can sometimes occur in a mitochondrial pattern. It typically presents during infancy with developmental delay and deterioration of brainstem function. Respiratory failure is the common cause of death and postoperative morbidity in patients with Leigh's disease. Herein, we report the case of a 17-year-old female patient with Leigh's syndrome who underwent general anaesthesia for a tracheostomy, which was performed in view of the patient's requirement for long-term ventilation and frequent toileting for secretions. Her respiratory complications included central hypoventilation secondary to brainstem involvement, and obstructive sleep apnoea due to obesity and muscle dystonia. She was hospitalised for acute respiratory decompensation secondary to hospital-acquired pneumonia. We review the anaesthetic implications of this disease and discuss its impact on preoperative, intraoperative and postoperative management.


Subject(s)
Adolescent , Anesthesia, General , Methods , Anesthetics , Therapeutic Uses , Dystonia , Pathology , Female , Humans , Hypoventilation , Diagnosis , Leigh Disease , Drug Therapy , Mitochondria , Pathology , Postoperative Complications , Sleep Apnea, Obstructive , Ventilation
15.
Article in Chinese | WPRIM | ID: wpr-436841

ABSTRACT

Objective To study the radiation dose level and dose distribution of leakage and scattering radiation in a helical tomotherapy (TOMO) room,and to identify the dose distribution characteristic which is different from the conventional radiotherapy so as to provide scientific data for the radiation protection of TOMO.Methods A helical tomotherapy facility typed Tomotherapy Hi-Art was employed as the radiotherapy device.The air kerma from leakage radiation and scattering radiation distributed on the couch plane and in TOMO room were detected mainly by GR-200A TLDs of LiF(Mg,Cu,P),while 100 Gy were being accumulated under the condition of simulation radiation treatment.Then,the leakage radiation ratio and scattering-leakage radiation ratio (the ratio of site radiation dose to isocenter standard output dose) were calculated.Results The radiation level and dose distribution of leakage radiation and scattering radiation in the TOMO treatment room were in bilateral symmetry to the rotation isocenter and the treatment couch longitudinal axis,and the radiation level in front of the radiotherapy device was significantly higher than that of the rear of the TOMO equipment.In the plane of treatment couch,the maximum leakage radiation ratio at the position 100 cm away from the isocenter was only 1.3 × 10-4,and the mean value of the leakage radiation ratio at the position 300 cm away from the isocenter was lower than 2.0 × 10-5.The scattering radiation at 200-300 cm away from the isocenter was accounted for 25%-30% of the leakage radiation from the responding sites,and the indoor scattering radiation decreased faster than leakage radiation with the distance from the isocenter.Conclusions The radiation level of leakage and scattering in a TOMO room is significantly lower than that in a conventional radiotherapy room.

16.
Article in Chinese | WPRIM | ID: wpr-419078

ABSTRACT

Objective To monitor the levels of radioactive contamination due to the Japanese Fukushima nuclear accident in Beijing,so as to provide scientific technical information for government to draw effective controlling strategy and processing mechanism.Methods The system of nuclear emergency nmonitoring was started,then the radioactive contamination levels of atmosphere,rain water,surface water and vegetables in Beijing were detected according to the relative survey regulations and technology criterions.Results During the period from 15 to 41 d after the accident,obvious radioactive contamination was found in the atmosphere of Beijing.The maximum radioactivity concentration of 131I ( 5.89 mBq/m3 ) was detected at 22 d after the accident.The radioactivity concentrations of 137Cs and 134Cs were surveyed forming their corresponding peaks at 20 d after the accident,but they were one magnitude lower than the peak value of 131I at least.In addition,the gross β radioactivity level in the water of Chao Bai-he river was verified to be in the range of 0.314 - 0.602 Bq/L. Conclusions The radioactive contamination due to Fukushima nuclear accident has not done visible harm to the public health in Beijing,but monitoring should be continued to observe the long-term effect of the accident.

17.
Article in Chinese | WPRIM | ID: wpr-424203

ABSTRACT

Objective To assess the level of radiation exposures of operators in three typical types of interventional fluoroscopic procedures.Methods Alderson Radiation Therapy (ART) phantom was used to stimulate the practices of diagnosis and therapy using TLDs for dose measurement.The radiation exposures of eye lens, neck, and breast were measured when the lead shielding of machine was on/off and the equivalent dose and effective dose to the eye lens were estimated.Results Radiation exposure of head was obviously reduced by 85% -90% when the lead shielding was on.The doses in different procedures were different.In cerebral angiography the dose equivalent of eye len was the highest in the three procedures.The annual effective dose for the operators was smaller in peripheral vascular interventions than that in cardiovascular interventional therapy and that in cerebral angiography.Conclusions The operators involved in intervention will receive an annual effective dose of less than 20 mSv as recommended by the ICRP under the protection conditions provided by the current study, except for eye lens.Attention should be paid to the protection of the eyes of operators.

18.
Article in Chinese | WPRIM | ID: wpr-248255

ABSTRACT

<p><b>OBJECTIVE</b>To study the influence of transfection with human transforming growth factor-beta1 (hTGF-beta1) gene on the osteogenic potential and differentiation of the cultured human gingival fibroblast (GF).</p><p><b>METHODS</b>Enzyme kinetics method was used to measure the effects of the transfection on the alkaline phosphatase (ALP) activity. Immunohistochemistry stain and image analysis were applied to evaluate the alteration of the content of osteopontin (OPN), bone sialoprotein (BSP), osteonectin (ON), osteocalcin (OC) in the GF with transfection. Mineralization nodules formation in vitro was also used.</p><p><b>RESULTS</b>The ALP activity of the GF after transfection was higher than the GF without transfection significantly (P<0.05), and was close to that of the PDLCs (P>0.05). The content of OC in GF was not improved after transfection, was similar with that of PDLCs (P>0.05). Under immunohistochemistry stain, the contents of OPN, ON, BSP expressed in GF with transfection were higher than those of GF without transfection (P<0.05), but similar to those of PDLCs (P>0.05). In the mineralized cultured medium, the nodules were observed in the GF with transfection and PDLCs after 21 days and 24 days alternatively. After von Kossa stain, purple mineralization nodules were observed.</p><p><b>CONCLUSION</b>The GF transfected with pcDNA3-hTGF-beta1 could express some osteogenic characters, though these characters are restricted.</p>


Subject(s)
Alkaline Phosphatase , Cell Differentiation , Fibroblasts , Gingiva , Humans , Integrin-Binding Sialoprotein , Osteocalcin , Osteonectin , Osteopontin , Transfection , Transforming Growth Factor beta1
19.
Chinese Journal of Stomatology ; (12): 274-278, 2009.
Article in Chinese | WPRIM | ID: wpr-346749

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the effects of gingival fibroblasts (GF) transfected with hTGF-beta1 gene on improving the periodontal tissue regeneration for the repair of degree II artificial furcation defects.</p><p><b>METHODS</b>The gingival fibroblasts transfected with hTGF-beta1 gene was compounded to the cuttlebone-transformed nanometer hydroxyapatite (CBHA) material from the cuttlefish in vitro, the degree II furcation defects on the premolars of dogs were produced surgically, and the compound was to implanted into the defect (transfected group), and compared with the compound of periodontal ligament cells (PDLC) with nanometer HA material and the compound of untransfected GF with HA. The results were examined histologically 8 weeks after operation.</p><p><b>RESULTS</b>In the transfected group and the positive control group, more new attachment was found compared with the negative control (P < 0.01), and the NC, NB and NC of the transfected group and the positive control group were: (2.97 +/- 0.50), (4.29 +/- 0.26) and (4.73 +/- 0.06) mm; (3.09 +/- 0.26), (4.46 +/- 0.25) and (4.69 +/- 0.10) mm, respectively. There was no significant difference between the two groups (P > 0.05). Although the alveolar bone regeneration was found in the untransfected group [NB = (3.46 +/- 0.32) mm], the root resorption was observed. The tracing experiment showed that the transfected GF were found in the new alveolar bone and the periodontal membrane.</p><p><b>CONCLUSIONS</b>GF transfected with hTGF-beta1 gene can significantly improve the periodontal tissue regeneration in treatment of degree II furcation defects and is involved in the formation of the new alveolar bone and the new periodontal membrane.</p>


Subject(s)
Animals , Dogs , Fibroblasts , Gingiva , Cell Biology , Guided Tissue Regeneration, Periodontal , Male , Nanostructures , Periodontal Ligament , Tissue Engineering , Transfection , Transforming Growth Factor beta , Genetics
20.
Article in Chinese | WPRIM | ID: wpr-316098

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the health care status of female workers exposed to occupational hazards in Haidian district of Beijing and improve the labor protection of female workers.</p><p><b>METHODS</b>A questionnaire provided by National Center for Women and Children's Health of Chinese CDC was used in the survey conducted to collect information about health care status of female workers in 141 factories with occupational hazards including chemical poisons and physical factors (noise, libration, microwave, high frequency and low temperature).</p><p><b>RESULTS</b>141 factories were investigated, including 53 state-owned enterprises, 21 collective enterprises, 46 joint-stock enterprises, and 21 non-public enterprises. 12 251 female workers were surveyed, 10.19% (1249/12 251) of whom were exposed to occupational hazards. Of 141 factories studied, 16.31% (23/141) had no labor protection management organization.27.66% (39/141) did not provide pre-employment physical examination service to female workers.48.94% (69/141) didn't establish labor protection system for female workers in menstrual period. While, 21.28% (30/141) of the studied institutes deducted some salaries in the pregnancy, and 32.62% (46/141) deducted their wages during the puerperal period. 2.13% (3/141) arranged female workers in the posts which are forbidden by law (continuous heavy work load operation).9.93% (14/141) arranged pregnant female workers on the post forbidden by law.31.91% (45/141) and 33.33% (47/141) would deduct the time of prenatal medical examination and lactation from their working hours, respectively.39.01% (55/141) didn't afford the cost of fertility. 68.09% (96/141) had annual gynecological examination.45 factories were collected occupational examination reports, accounted for 31.91% (45/141). No female workers were found suffering from occupational disease. Of the 1865 occupational hazard factor monitoring points in 34 factories, there were 155 monitoring points, which were all noise monitoring points, did not meet the standard.</p><p><b>CONCLUSION</b>The current health-care status of female workers is not optimistic. It is necessary to consistently improve health care legislations, establish coordinated management mechanism and strengthen the publicity of policy to protect female workers.</p>


Subject(s)
China , Epidemiology , Female , Humans , Occupational Diseases , Epidemiology , Occupational Exposure , Occupational Health , Surveys and Questionnaires , Women's Health Services , Work Capacity Evaluation , Workplace
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