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Objective@#To explore the association between bedroom light at night (LAN) exposure and body mass index (BMI) in children at 1 year follow up, so as to provide new strategies for obesity prevention.@*Methods@#From December 2021 to May 2022, cluster random sampling was conducted, involving 648 children from two primary schools in Tianchang, Chuzhou City, Anhui Province, China, to assess bedroom LAN exposure of children during sleep. A questionnaire survey and physical examination were carried out in May 2022. Multivariate linear regression was performed to analyze the correlation between bedroom LAN exposure and BMI variable quantity at 1 year follow up (May, 2023).@*Results@#The median intensity of bedroom LAN exposure during the sleep episode was [1.11(0.35,3.24)lx] in children. The proportion of the sample exposed to an average light intensity of ≥3 lx was 27.5%, while 19.0% was exposed to a LAN intensity of ≥5 lx during the sleep episode. In the multivariable linear regression, after adjusting for covariates, including sex, baseline age, sleep duration, family monthly income, and maternal education level, exposure to a 1 h-average post bedtime LAN intensity of ≥3 lx ( β=0.25, 95%CI =0.05-0.44) and LAN≥5 lx ( β=0.34, 95% CI = 0.12-0.55) was associated with a gain of 0.25 and 0.34 kg/m 2, respectively, in the children s BMI at the 1 year follow up ( P < 0.05).@*Conclusions@#A positive correlation was found between bedroom LAN exposure and BMI variable quantity at 1 year follow up in children. Thus, reduced bedroom LAN exposure might be useful for interventions aimed at obesity prevention.
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@#Digital intraoral scanning is a hot topic in the field of oral digital technology. In recent years, digital intraoral scanning has gradually become the mainstream technology in orthodontics, prosthodontics, and implant dentistry. The precision of digital intraoral scanning and the accuracy and stitching of data collection are the keys to the success of the impression. However, the operators are less familiar with the intraoral scanning characteristics, imaging processing, operator scanning method, oral tissue specificity of the scanned object, and restoration design. Thus far, no unified standard and consensus on digital intraoral scanning technology has been achieved at home or abroad. To deal with the problems encountered in oral scanning and improve the quality of digital scanning, we collected common expert opinions and sought to expound the causes of scanning errors and countermeasures by summarizing the existing evidence. We also describe the scanning strategies under different oral impression requirements. The expert consensus is that due to various factors affecting the accuracy of digital intraoral scanning and the reproducibility of scanned images, adopting the correct scanning trajectory can shorten clinical operation time and improve scanning accuracy. The scanning trajectories mainly include the E-shaped, segmented, and S-shaped methods. When performing fixed denture restoration, it is recommended to first scan the abutment and adjacent teeth. When performing fixed denture restoration, it is recommended to scan the abutment and adjacent teeth first. Then the cavity in the abutment area is excavated. Lastly, the cavity gap was scanned after completing the abutment preparation. This method not only meets clinical needs but also achieves the most reliable accuracy. When performing full denture restoration in edentulous jaws, setting markers on the mucosal tissue at the bottom of the alveolar ridge, simultaneously capturing images of the vestibular area, using different types of scanning paths such as Z-shaped, S-shaped, buccal-palatal and palatal-buccal pathways, segmented scanning of dental arches, and other strategies can reduce scanning errors and improve image stitching and overlap. For implant restoration, when a single crown restoration is supported by implants and a small span upper structure restoration, it is recommended to first pre-scan the required dental arch. Then the cavity in the abutment area is excavated. Lastly, scanning the cavity gap after installing the implant scanning rod. When repairing a bone level implant crown, an improved indirect scanning method can be used. The scanning process includes three steps: First, the temporary restoration, adjacent teeth, and gingival tissue in the mouth are scanned; second, the entire dental arch is scanned after installing a standard scanning rod on the implant; and third, the temporary restoration outside the mouth is scanned to obtain the three-dimensional shape of the gingival contour of the implant neck, thereby increasing the stability of soft tissue scanning around the implant and improving scanning restoration. For dental implant fixed bridge repair with missing teeth, the mobility of the mucosa increases the difficulty of scanning, making it difficult for scanners to distinguish scanning rods of the same shape and size, which can easily cause image stacking errors. Higher accuracy of digital implant impressions can be achieved by changing the geometric shape of the scanning rods to change the optical curvature radius. The consensus confirms that as the range of scanned dental arches and the number of data concatenations increases, the scanning accuracy decreases accordingly, especially when performing full mouth implant restoration impressions. The difficulty of image stitching processing can easily be increased by the presence of unstable and uneven mucosal morphology inside the mouth and the lack of relatively obvious and fixed reference objects, which results in insufficient accuracy. When designing restorations of this type, it is advisable to carefully choose digital intraoral scanning methods to obtain model data. It is not recommended to use digital impressions when there are more than five missing teeth.
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Objective@#To examine the prevalence and factors influencing the inconsistency for knowledge and behavior in condom use among college students, so as to provide suggestions for AIDS prevention and education in universities.@*Methods@#From October to December 2019, a multistage cluster sampling method was employed to collect data relating to inconsistency for knowledge and behavior in condom use and other related factors among 1 303 students from six colleges in Zhuhai, China. Chi square test and Logistic regression were performed to analyze the influencing factors and moderating effect.@*Results@#The reporting rate of in consistency of knowledge and behavior in condom use among college students was 41.1%. Multivariate Logistic regression analysis showed that seeking sexual partners offline was negatively correlated with inconsistency for knowledge and behavior in condom use ( OR=0.70, 95%CI =0.51-0.95). However, condom nonuse during the first sexual experience (OR=7.11, 95%CI=5.23-9.67), smoking before sex ( OR=1.47, 95%CI =1.07-2.02), drinking before sex ( OR=1.44, 95%CI =1.09-1.91), history of intimate partner violence ( OR=1.53, 95%CI =1.13-2.07), and having multiple sexual partners ( OR=1.69, 95%CI =1.25-2.29) were positively correlated with inconsistency for knowledge and behavior in condom use ( P <0.05). The moderating effect analysis showed that condom use during the first sexual experience had a moderating effect on smoking before sex and inconsistency for knowledge and behavior in condom use ( β=0.92, P <0.05). Among students who did not use condoms during the first sexual experience, a positive correlation was observed between smoking before sex and inconsistency for knowledge and behavior in condom use ( OR= 2.76 , 95%CI=1.09-6.99, P <0.05). However, no correlation was found between smoking before sex and inconsistency for knowledge and behavior in condom use ( OR=1.32, 95%CI=0.92-1.88, P >0.05) among students who used condoms during the first sexual experience.@*Conclusion@#High levels of inconsistency for knowledge and behavior in condom use are found among college students in Zhuhai City. Colleges should carry out sex education activities as soon as possible, and explore new health education models to promote the transformation of their knowledge into behavior.
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@#Abstract: Objective To analyze the epidemiological characteristics of pulmonary tuberculosis (PTB) in Ankang City from 2011 to 2021, so as to provide a scientific basis for the formulation of PTB prevention and control strategy. Methods Descriptive statistics were used to analyze the epidemiological characteristics of PTB in Ankang City from 2011 to 2021, and a time series model was established to quantitatively predict the incidence of pulmonary tuberculosis in 2023. Results The incidence rate in Ankang City showed a significant upward trend from 2011 to 2017, and a more obvious downward trend in 2017-2021 (P<0.05), and the decrease rate in 2021 was 40.36% compared with that in 2017. The proportion of etiological positivity increased from 12.5% in 2014 to over 50.00% after 2019. The incidence season was mainly concentrated in the first quarter, accounting for 28.39% of the annual incidence. High incidence areas were concentrated in the south of Ankang: Langao County, Ziyang County and Zhenping County, with 128.32/100 000, 117.07/100 000 and 110.44/100 000, respectively. Low incidence areas were located in the north of Ankang: Ningshan County, with 60.62/100 000. Farmers and students were the high incidence groups, accounting for 81.80% and 4.97% of the total cases respectively. The incidence of young children was relatively low, but cases were reported every year. The incidence rate of male was 2.39 times that of female. The age of onset increased significantly from 15 years old, and the peak incidence was in the age group of 60-<80 years old, followed by the age group of 45-<60 years old, the average annual incidence was 136.44/100 000 and 104.47/100 000, respectively. The model ARIMA(0,1,1)(0,1,1)12 predicted that the incidence of the disease generally increased from October 2022 to March 2023, then steadily decreased, and increased again in December. Conclusions The incidence of tuberculosis varies in different areas of Ankang City, and males, farmers, students and the elderly are all factors of high incidence of tuberculosis. Therefore, different prevention and control strategies should be adopted according to the characteristics of population in different areas. The number of cases in Ankang City in 2023 showed an overall downward trend, which can provide a reference for the prevention and control of PTB.
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Objective@#The study aimed to develop Questionnaire for Parental Acceptability of School based Depression Symptom Screening by Delphi method, so as to provide a reference and suggestions for promoting screening adolescents depression.@*Methods@#The study was conducted through the literature review and two rounds of the Delphi expert consultation. The initial construction of scale dimension and item was conducted through the literature search. A survey of 12 experts from 6 different provinces, cities and regions in China was conducted, and the Delphi technique was used to collect and analyze expert opinions data about the importance and feasibility of questionnaire content. The dimensions and specific items of the questionnaire were finally determinded.@*Results@#The response rates were 100% in both rounds of Delphi consultation. Kendall coordination degree W =0.22 ( χ 2=63.72, P <0.01), which showed the agreement of expert opinions. The initial scale consisted of 4 dimensions and 17 items, including parental cognition of school based depression screening, parental cognition of school depression screening results feedback and management, parental attitude of school based depression screening, parental utilization of mental health services. After two rounds of expert consulattion, the final scale consisted of 3 first grade dimensions including parental cognition of depression symptom, parental attitude of school based depression symptom screening and parental mental health promotion behaviour, and also cinsisted of 4 second grade dimensions including parental knowledge of depression symptom, parental attitude of school based depression symptom screening, parental choice preference of school based depression symptom screening, parental utilization of mental health services, which had a total of 25 items.@*Conclusion@#The questionnaire is developed for assessing parental acceptability of school based depression screening and associated factors. The finding will facilitate mental health services providers in the screening implementation, but further empirical research is still needed.
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Objective@#To explore the association between exposure to bedroom night light during sleep and emotional symptoms in children and provide a scientific basis for subsequent effective prevention and intervention.@*Methods@#In December 2021, 1 926 students from grades 4 to 6 were recruited to conduct a student questionnaire survey in two primary schools in Tianchang of Chuzhou City, Anhui Province. The data, including general demographic information, use of night lights and curtains, emotional symptoms, and other information, was collected. Binary Logistic regression analysis was used to examine the correlation between night light use and children s emotional symptoms.@*Results@#The reporting rates of depression symptoms, generalized anxiety symptoms, social phobia, and obsessive compulsive symptoms of the children were 2.5%, 2.6%, 3.4% and 2.5%, respectively. About 12.6% of children often sleep with a night light on, and 22.0% of children did not close the curtains. Binary Logistic regression analysis revealed that frequent sleep with night lights was associated with an increased risk of depression symptoms( OR=2.29, 95%CI = 1.04- 5.03), social phobia ( OR=1.93, 95%CI =1.02-3.64) and obsessivecompulsive symptoms ( OR=3.44, 95%CI =1.72-6.88) in children( P < 0.05).@*Conclusion@#There is a positive correlation between bedroom night light exposure during sleep and the detection rate of children s emotional symptoms. The attention should be paid to bedroom light environment of children during sleep to reduce the adverse effects of night light exposure on the mental health.
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Pentaxin 3 (PTX3), as a multifunctional glycoprotein, plays an important role in regulating inflammatory response, promoting tissue repair, inducing ectopic calcification and maintaining bone homeostasis. The effect of PTX3 on bone mineral density (BMD) may be affected by many factors. In PTX3 knockout mice and osteoporosis (OP) patients, the deletion of PTX3 will lead to decrease of BMD. In Korean community "Dong-gu study", it was found that plasma PTX3 was negatively correlated with BMD of femoral neck in male elderly patients. In terms of bone related cells, PTX3 plays an important role in maintaining the phenotype and function of osteoblasts (OB) in OP state;for osteoclast (OC), PTX3 in inflammatory state could stimulate nuclear factor κ receptor activator of nuclear factor-κB ligand (RANKL) production and its combination with TNF-stimulated gene 6(TSG-6) could improve activity of osteoclasts and promote bone resorption;for mesenchymal stem cells (MSCs), PTX3 could promote osteogenic differentiation of MSCs through PI3K/Akt signaling pathway. In recent years, the role of PTX3 as a new bone metabolism regulator in OP and fracture healing has been gradually concerned by scholars. In OP patients, PTX3 regulates bone mass mainly by promoting bone regeneration. In the process of fracture healing, PTX3 promotes fracture healing by coordinating bone regeneration and bone resorption to maintain bone homeostasis. In view of the above biological characteristics, PTX3 is expected to become a new target for the diagnosis and treatment of OP and other age-related bone diseases and fracture healing.
الموضوعات
Animals , Male , Mice , Bone Resorption/metabolism , Cell Differentiation , Fracture Healing/genetics , Osteoblasts , Osteoclasts , Osteogenesis , Osteoporosis/genetics , Phosphatidylinositol 3-Kinases/pharmacologyالملخص
Objective @#To evaluate the effectiveness of interventions for human papillomavirus ( HPV ) vaccine hesitancy among female university students based on the precaution adoption process model (PAPM), so as to provide the evidence for improving the coverage of HPV vaccine in this population. @*Methods @#HPV vaccine hesitant female students were selected using a cluster sampling method from Zhejiang Chinese Medical University, and randomly assigned to the PAPM group and control group. Students in the PAPM group received PAPM-based interventions for HPV vaccine hesitancy, while students in the control group were given routine interventions. The HPV-related knowledge, HPV vaccine-related knowledge and HPV vaccine hesitancy scores were collected from both groups prior to interventions ( T0 ), 0 ( T1 ), 1 ( T2 ) and 3 months post-interventions ( T3 ), and the effectiveness of interventions was evaluated using analysis of variance for repeated measures.@*Results @#There were 147 students in the PAPM group and 141 students in the control group. In the PAPM group, 36.73% of the students majored in medical sciences, and 48.23% were freshmen; in the control group, 39.72% majored in medical sciences, and 50.35% were freshmen. The mean scores of HPV- and HPV vaccine-related knowledge were significantly greater in the PAPM group than in the control group, respectively ( T1, 5.29 vs. 4.91; T2, 4.27 vs. 4.22; T3, 4.22 vs. 4.04; P<0.05 ); however, no significant differences were detected in the HPV vaccine hesitancy scores between the two groups, respectively ( T1, 2.98 vs. 2.95; T2, 3.07 vs. 3.07; T3, 3.08 vs. 2.97; P>0.05 ). The mean scores of the confidence dimension ( T1, 3.37 vs. 3.23; T2, 3.48 vs. 3.40; T3, 3.38 vs. 3.25 ) and the dimension of influence by others ( T1, 3.44 vs. 3.33; T2, 3.42 vs. 3.37; T3, 3.46 vs. 3.27 ) were significantly greater in the PAPM group than in the control group (P<0.05), while the mean scores of the complacency dimension were significantly lower in the PAPM group than in the control group ( T1, 1.98 vs. 2.03; T2, 2.06 vs. 2.20; T3, 2.18 vs. 2.15; P<0.05 ).@*Conclusions @#PAPM-based interventions for HPV vaccine hesitancy may effectively improve the awareness of HPV and HPV vaccines, reduce complacency, and enhance the influence by others among female university students.
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Objective@#To explore the relationship and potential mechanism between peer victimization and early onset of breast development in girls, and to provide new strategies for precocious puberty prevention.@*Methods@#A total of 950 girls aged (9.0±1.2) years participated in this survey in Ma anshan City in China. Revised Bully/Victim Questionnaire (BVQ) was used. Each girl was assessed on breast Tanner stage by one female pediatric endocrinologist. All the girls collected morning awakening saliva sample with Salivette at home. Body fat percentage (%BF) was derived from Bioelectrical Impedance Analyzer (BIA) measurements.The association between peer bullying and early breast development was analyzed by stepwise Logistic regression.The mediation coefficient was estimated using the Logistic regression.@*Results@#Totally 23.2% (220/950) of all the girls reported being victimized at school. More girls reported peer victimization had early breast onset (24.1%,53) compared with girls with no victimization experience ( 13.7 %,100). Logistic regression analyses indicated that peer victimization was associated with early onset of breast development ( OR=1.74, 95%CI =1.16-2.59) after body fat and awakening cortisol adjusted. Mediation analysis showed that high cortisol and high fat both had indirect effects in the association between peer victimization and early onset of breast development.Mediating analysis showed that both high cortisol level and high body fat rate had indirect effects between peer bullying and early breast development, and the mediating effect values were 0.37 and 0.45,respectively.@*Conclusion@#Peer victimization significantly correlated with early onset of breast development among girls, which might be mediated through HPA axis hyperactivity and high adiposity.
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Objective@#To explore the buffering effect of positive childhood experiences (PCEs) on mental health risks among adolescents before and after COVID-19 epidemic.@*Methods@#In October 2019 (before the outbreak of COVID-19), 1 322 students from grades 4 to 9 were recruited from primary and secondary schools in two counties of Chizhou city, Anhui Province. A questionnaire survey was conducted to collect general demographic information, PCEs, depressive symptoms, anxiety symptoms, self harm behavior, suicidal ideation. Follow up survey was conducted after school re opening (May 2020). Mental health status before and after the COVID-19 epidemic was compared among students with different PCEs by multiple logistic regression analyses.@*Results@#The detection rates of depressive symptoms, anxiety symptoms, self harm behavior and suicidal ideation (22.6%, 16.0%, 40.0%, 29.9%) of the respondents after school re opening were significantly higher compared that before the epidemic (16.5%, 13.5%, 31.1 %, 22.6%). There were no significant differences in the detection rates of depressive symptoms, anxiety symptoms,self harm behavior and suicidal ideation between high PCEs group before and after the epidemic ( Z =-0.05,0.27,0.84,1.84, P >0.05). Multivariate Logistic regression analysis showed that the risk of depressive symptoms and self harm behavior in the low PCEs group after school re opening was 1.39 times higher than that before the epidemic (95% CI= 1.05 -1.84, P <0.05). The risk of non suicidal self injury behavior in the low PCEs group after school re opening was 1.31 times higher than that before the epidemic (95% CI= 1.05 -1.62, P <0.05). There were no significant differences in mental health detection rates in high PCEs group before and after the epidemic ( P >0.05).@*Conclusion@#During the time of COVID-19 epidemic, PCEs is associated with lower rates of depressive symptoms, anxiety symptoms, self harm behavior and suicide ideation in adolescents. The findings suggest that more support and help should be given to adolescents from the perspectives of family, school and peers, so as to reduce the adverse effects of public health emergencies on adolescents mental health.
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Objective@#To understand the prevalence of HIV (human immunodeficiency virus) testing and associated factors among sexual active college students in Zhuhai City.@*Methods@#From November to December, 2019, an anonymous electronic questionnaire was administered among 12 235 students in six colleges and universities in Zhuhai City by multistage sampling. A total of 1 789 college students ever had sex were selected. Pearsons Chisquare test and nonconditional Logistic regression model were applied to analyze the factors associated with uptake of HIV testing.@*Results@#Among these students ever had sex, 7.55% (135/1 789) had been tested for HIV mainly through hospitals (71.85%). The main reasons for testing were regular testing (50.37%) and intending to know their infection status (23.70%). Multivariable Logistic regression showed that homosexual individuals (OR=4.62, 95%CI=1.07-19.95) and those who had heterosexual commercial sex in the past year (OR=3.77, 95%CI=1.96-7.26) were more likely to test for HIV, while female (OR=0.41, 95%CI=0.24-0.69) were less likely to test for HIV.@*Conclusion@#The proportion of HIV testing was low among sexual active college students in Zhuhai City. Interventions should be tailored including strengthening the HIV testing propaganda education and enhancing students awareness of HIV testing, and the influencing factors such as gender, sexual orientation and commercial sexual behavior should be taken into consideration, so as to improve the HIV testing coverage of this population.
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@#Objective To evaluate the application of three-dimensional printing technique in surgical treatments on complex congenital heart diseases. Methods Two patients were enrolled with complex congenital heart diseases. The computerized tomography data were used to build the 3D architecture of cardiac anomalies. The White-Jet-Process technique was used to print the models with 1∶1 ratio in size. The models were used to make the treatment strategy making, young surgeon training and operation simulation. Results The full color and hollowed-out cardiac models with 1∶1 ration in size were printed successfully. They were transected at the middle point of vertical axis, which was conveniently to explore the intracardiac anomalies. However, for patient 1, the model lost the atrial septal defect. Taking the two models as references, operation group held preoperative consultation, operation simulation, and finally, the operation plans were determined for the two patients. Both the two operation were carried out smoothly. Conclusion Although the limitations of 3D printing still exist in the application for congenital heart diseases, making the preoperative plan and operation simulation via 3D cardiac model could enhance the understanding of following operation and procedure details, which could improve the tacit cooperation among operation group members. Furthermore, operation results also could be improved potentially. Therefore, the cardiac 3D printing should be popularized in clinic in the future.
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Abstract Background: Low phosphorus availability is a major factor restricting rice growth. Dongxiang wild rice (Oryza rufipogon Griff.) has many useful genes lacking in cultivated rice, including stress resistance to phosphorus deficiency, cold, salt and drought, which is considered to be a precious germplasm resource for rice breeding. However, the molecular mechanism of regulation of phosphorus deficiency tolerance is not clear. Results: In this study, cDNA libraries were constructed from the leaf and root tissues of phosphorus stressed and untreated Dongxiang wild rice seedlings, and transcriptome sequencing was performed with the goal of elucidating the molecular mechanisms involved in phosphorus stress response. The results indicated that 1184 transcripts were differentially expressed in the leaves (323 up-regulated and 861 down-regulated) and 986 transcripts were differentially expressed in the roots (756 up-regulated and 230 down-regulated). 43 genes were up-regulated both in leaves and roots, 38 genes were up-regulated in roots but down-regulated in leaves, and only 2 genes were down-regulated in roots but up-regulated in leaves. Among these differentially expressed genes, the detection of many transcription factors and functional genes demonstrated that multiple regulatory pathways were involved in phosphorus deficiency tolerance. Meanwhile, the differentially expressed genes were also annotated with gene ontology terms and key pathways via functional classification and Kyoto Encyclopedia of Gene and Genomes pathway mapping, respectively. A set of the most important candidate genes was then identified by combining the differentially expressed genes found in the present study with previously identified phosphorus deficiency tolerance quantitative trait loci. Conclusion: The present work provides abundant genomic information for functional dissection of the phosphorus deficiency resistance of Dongxiang wild rice, which will be help to understand the biological regulatory mechanisms of phosphorus deficiency tolerance in Dongxiang wild rice.
الموضوعات
Phosphorus/deficiency , Oryza/genetics , Stress, Physiological/genetics , Gene Expression Profiling , Seedlings/genetics , Phosphorus/pharmacology , Oryza/drug effects , Oryza/physiology , Stress, Physiological/drug effects , Down-Regulation , Gene Expression Regulation, Plant , Seedlings/drug effects , Seedlings/physiologyالملخص
Breast cancer is the most common malignant tumor in women,and its incidence has increased in recent years in China.Evidence-based medicine has made great achievements in systemetic treatment of breast cancer,which laid the foundation for standardized treatment of breast cancer.Additionally,precision medicine provides more refined,individualized treatment for breast cancer patients.Breast cancer research in multiomic analysis,ctDNA,intratumour heterogeneity and interaction between tumor and microenvironment has broad prospects.
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Objective To assess the safety and efficacy of intra-arterial chemotherapy (IAC) for the treatment of young infants (≤ 6 months) with retinoblastoma (RB).Methods Together 21 (24 eyes) young infants (≤6 months) with RB who received IAC were included from January 2013 to February 2017 in this study and the clinical data were retrospectively analyzed.According to the international stages for intraocular retinoblastoma,stage B appeared in 4 eyes,stage D in 13 eyes,and stage E in 7 eyes.And there were two kinds of administration for chemotherapy,including perfusion chemotherapy of melphalan (≤ 0.5 mg · kg-1) combined carboplatin (20 mg) on the first and third IAC procedures,and melphalan (≤ 0.5 mg · kg-1) combined with topotecan (0.5-1.0 mg) on the second and fourth IAC procedures,and the dose of melphalan was appropriately adjusted according to the tumor changes and the response of the child after the previous IAC.Then main outcome measures include successful rate for procedures,ocular preservation rate,local and systemic complications and the time and dose of radiation exposure during IAC were evaluated.Results Of the 70 IAC procedures performed on 24 eyes,69 procedures (98.6%) were successful,and 1 was failed due to ophthalmic spasm.IAC ranged from 2 to 4 cycles with mean 3.3 cycles.After IAC procedures,17 eyes presented fish-like changes or calcification or scar formation,and the overall ocular preservation rate was 70.8%,and the other 7 eyes (29.2%) underwent enucleation of the eyeballs due to fundus hemorrhage in 3 eyes and extensive vitreous implantation in 4 eyes.Postoperative adverse reactions included eyelid oedema in 8 patients,fundus hemorrhage in 3 eyes,ocular arteriospasm in 1 patients and bone marrow suppression in 9 patients.The mean irradiation time was 3.2-32.4 (6.3 ± 1.2) min for one IAC procedure and the mean irradiation dose was 5-153 (51.9 ±9.2)mGy.The cumulative irradiation time was 6.6-53.1 (19.2 ±0.9)min for each patient of IAC cycles and the cumulative irradiation dose was 41-281 (157.3 ± 13.1) mGy.Conclusion IAC is safe and effective for the treatment of young infants (≤≤ 6 months) with RB,and the irradiation dose in IAC is lower than the threshold dose that can cruise lens tissue reactions.
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Objective:Generation and identification of hybridoma to produce monoclonal antibody against MICA/B. Methods:SP2/0 cells were fused with murine splenocyte immunized with recombinant protein rMICA?012 to get hybridoma cell lines. The titer of the monoclonal antibody produced by 9B10 cell line was determined by ELISA and its specificity was tested by Western blot,Luminex mutiplex microsphere-based immunoassay and immunofluorescence assay. Results:Six hybridoma cell lines were selected by ELISA screening test. The minimum reaction concentration of mAb 9B10 was 0. 02 ng/μl,and the specificity of mAb 9B10 was determinated by Western blot,Luminex mutiplex microsphere-based immunoassay and immunofluorescence. Conclusion:The monoclonal antibody 9B10 was available to apply for the detection of MICA and MICB expression.
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Objective:Generation and identification of hybridoma to produce monoclonal antibody against MICA/B. Methods:SP2/0 cells were fused with murine splenocyte immunized with recombinant protein rMICA?012 to get hybridoma cell lines. The titer of the monoclonal antibody produced by 9B10 cell line was determined by ELISA and its specificity was tested by Western blot,Luminex mutiplex microsphere-based immunoassay and immunofluorescence assay. Results:Six hybridoma cell lines were selected by ELISA screening test. The minimum reaction concentration of mAb 9B10 was 0. 02 ng/μl,and the specificity of mAb 9B10 was determinated by Western blot,Luminex mutiplex microsphere-based immunoassay and immunofluorescence. Conclusion:The monoclonal antibody 9B10 was available to apply for the detection of MICA and MICB expression.
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Objective:To explore whether metoprolol administration before emergency percutaneous coronary inter‐vention (PCI) can reduce incidence rate of reperfusion arrhythmia (RA) or not .Methods :According to random number table ,a total of 80 patients with acute anterior wall myocardial infarction (age70 beats/min ,no PR interval prolongation ) were randomly and equally divided into routine treatment group (didn't receive metoprolol tartrate tablet before emergency PCI ) and metoprolol group (received metoprolol tartrate tablet 25 mg before emergency PCI ) .Incidence rate of RA after PCI was compared between two groups .Results:In metoprolol group ,a total of 32 cases received PCI and eight cases received percutaneous transluminal coronary angioplasty (PTCA);in routine treatment group ,a total of 35 case received PCI and five cases received PTCA ,suc‐cess rates of both groups were 100% .In metoprolol group , RA occurred in 4 cases ,including one case with ventric‐ular fibrillation (VF);in routine treatment group , RA occurred in 15 cases ,including four cases with VF .Inci‐dence rate of RA after emergency PCI in metoprolol group was significantly lower than that of routine treatment group (10.0% vs .37.5% ,P=0.032) .Conclusion:Metoprolol administration before emergency PCI can reduce in‐cidence rate of reperfusion arrhythmia in patients with acute myocardial infarction .
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The aim of this study was to investigate the relationship between the acetylcholine concentration in the blood and gelsenicine-induced death in mice. Kunming mice were given intraperitoneal injections of normal saline, gelsenicine or different doses of acetylcholine chloride. Atropine was given to the mice which received gelsenicine or medium dose acetylcholine chloride injection. The blood was sampled immediately when the mice died or survived for 20 min after injection. The acetylcholine concentration and acetylcholinesterase activity in the blood were measured by the testing kits, and the mortality was calculated and analyzed. The results showed that half lethal dose of gelsenicine (0.15 mg/kg) reduced the acetylcholinesterase activity and increased the blood acetylcholine concentration. The blood acetylcholine concentration of the dead mice in the gelsenicine group was increased to 43.0 μg/mL (from 31.1 μg/mL in the control), which was lower than that (53.9 μg/mL) of the dead mice in the medium dose acetylcholine chloride group, but almost equal to that (42.7 μg/mL) of the survival mice in the medium dose acetylcholine chloride group. Atropine could successfully rescue the mice from acetylcholine poisoning, but its efficiency of rescuing the mice from gelsenicine intoxication was weak. These results suggest that gelsenicine can inhibit acetylcholinesterase activity and increase blood acetylcholine concentration, but the accumulation of acetylcholine may not be the only or main cause of the death induced by gelsenicine in mice.