[Analysis of iodine nutritional status of children aged 8-10 years in Zhejiang Province from 2016 to 2021].

Objective: To analyze the iodine nutrition status of children aged 8 to 10 years in Zhejiang Province from 2016 to 2021. Methods: A multi-stage stratified sampling method was used to select non-residential children aged 8 to 10 years from 90 counties in Zhejiang Province. A total of 114 103 children were included in the study from 2016 to 2021. Direct titration method and arsenic-cerium catalytic spectrophotometry were used to detect salt iodine content and urinary iodine level, respectively, to evaluate the iodine nutritional status of children. Ultrasound was used to detect thyroid volume and analyze the current prevalence of goiter in school-age children. Results: The age of 114 103 children was (9.04 ± 0.81) years old, with 50.0% of (57 083) boys. The median of iodine content M (Q1, Q3) in children's household salt was 23.00 (19.80, 25.20) mg/kg, including 17 242 non-iodized salt, 6 173 unqualified iodized salt, and 90 688 qualified iodized salt. The coverage rate of iodized salt was 84.89%, and the coverage rate of qualified iodized salt was 79.48%. The proportion of non-iodized salt increased from 11.85% in 2016 to 16.04% in 2021 (χ2trend=111.427, P<0.001). The median of urinary iodine concentration M (Q1, Q3) in children was 182.50 (121.00, 261.00) µg/L, among which the proportions of iodine deficiency, iodine suitability, iodine over suitability, and iodine excess were 17.25% (19 686 cases), 39.21% (44 745 cases), 26.85% (30 638 cases), and 16.68% (19 034 cases), respectively. The median of urinary iodine concentration in children in inland areas [M (Q1, Q3): 190.90 (128.80, 269.00) µg/L] was significantly higher than that in children in coastal areas [M (Q1, Q3): 173.00 (113.00, 250.30) µg/L] (P<0.001). From 2016 to 2021, a total of 39 134 ultrasound examinations were conducted, and 1 229 cases of thyroid enlargement were detected. The goiter rate was 3.14% (95%CI: 2.97%-3.32%). The incidence of goiter in children in coastal areas [3.45% (95%CI: 3.19%-3.72%), 641/18 604] was higher than that in children in inland areas [2.86% (95%CI: 2.64%-3.10%), 588/20 530] (P=0.001). Conclusion: From 2016 to 2021, the iodine nutrition level of children aged 8-10 years in Zhejiang Province is generally suitable, and the rate of goiter in children meets the limit of iodine deficiency disease elimination standards.

[Expression of ProEXC and PRMT5 in cervical adenocarcinoma and their clinical significance].

This study observed the expression of ProEXC protein and PRMT5 protein in cervical adenocarcinoma and adjacent tissues, exploring the relationship between the expression of ProEXC and PRMT5 and the auxiliary diagnosis of cervical adenocarcinoma, as well as the clinical pathological parameters. A total of 88 specimens diagnosed with cervical adenocarcinoma from the Second Affiliated Hospital of Soochow University between 2015 and 2020 were collected. Immunohistochemistry was employed to detect the expression of ProEXC and PRMT5 in cervical adenocarcinoma and adjacent tissues, and statistical analysis was conducted. The Cancer Genome Atlas (TCGA) database was utilized to analyze the correlation between the prognosis of cervical adenocarcinoma patients and the expression of ProEXC and PRMT5, as well as their related gene pathways. The GSE39293 dataset from the Gene Expression Omnibus (GEO) was selected to compare the expression levels of ProEXC and PRMT5 in cervical adenocarcinoma cell lines (HELA) before and after antiviral drug treatment.In cervical adenocarcinoma tissues, the expression of ProEXC protein (95.5% vs 4.6%, P<0.001) and PRMT5 protein (81.8% vs 26.1%, P<0.001) was significantly higher than in surrounding adjacent tissues. Their expression was correlated with the tumor's T stage, lymph node metastasis, and human papillomavirus (HPV) infection (P<0.05). TCGA database analysis showed that patients with high expression of MCM2 in PRMT5 and ProEXC had a lower overall survival rate (P<0.05), while the expression of TOP2A was not significantly correlated with survival. In the GSE39293 dataset, the expression of MCM2 (9.34 vs 9.68, P<0.001) and PRMT5 (8.16 vs 8.26, P=0.087) in cells decreased after treatment with cidofovir, while TOP2A (8.54 vs 8.42, P=0.056) expression did not change significantly. In the drug-resistant group, the expression of PRMT5 (8.42 vs 8.16, P=0.002) and MCM2 (9.51 vs 9.34, P=0.029) increased, while TOP2A (8.06 vs 8.54, P<0.001) expression decreased. Gene set enrichment analysis (GSEA) suggested that high expression of ProEXC mainly affected the cell cycle pathway, while high expression of PRMT5 mainly affected the RNA splicing pathway.This study found that ProEXC protein and PRMT5 protein were highly expressed in cervical adenocarcinoma tissues, and the high-expression group had a poorer prognosis, showing a certain correlation with the clinical and pathological characteristics of cervical adenocarcinoma. This may be related to their influence on the cell cycle and RNA synthesis pathways, suggesting their potential significant roles in the progression of cervical adenocarcinoma.

[miR-148b inhibits M2 polarization of LPS-stimulated macrophages by targeting DcR3].

Objective: To investigate the effect of microRNA (miR-148b) targeting decoy receptor 3 (DcR3) on macrophage polarization in sepsis. Methods: Experimental study. From December 2019 to December 2022, serum microRNA expression was detected in 3 patients with sepsis and 3 healthy controls in the clinical laboratory of Songjiang Hospital Affiliated to Shanghai Jiao Tong University School of Medicine. Phorbol 12-myristate 13-acetate (PMA) was used to induce the differentiation of human acute monocytic leukemia cells THP-1 into macrophages, and then lipopolysaccharide (LPS) was added to stimulate the establishment of a sepsis cell model, and the expression changes of miR-148b and DcR3 were detected by RT-PCR and Western blot. Overexpression of DcR3 was used to detect the expression levels of TNF-α, CD163 and IL-10 in macrophages stimulated by LPS (100 ng/ml). Overexpression of miR-148b was used to observe the changes of molecular markers of macrophage polarization. The targeting regulation effect of miR-148b on DcR3 was determined by dual-luciferase reporter assay. t test was used to analyze whether there were statistical differences among the groups. Results: The expression of miR-148b was down-regulated (P<0.05) and the expression of DcR3 was up-regulated (P<0.01) in THP-1 macrophages stimulated by LPS. Overexpression of DcR3 inhibited the expression of TNF-α (P<0.05) and promoted the expression of CD163 (P<0.01) and IL-10 (P<0.01). When miR-148b mimics was added, the opposite effect was observed. The dual-luciferase reporter assay confirmed that miR-148b targets and binds to DcR3, inhibiting its transcription and expression. The results of flow cytometry showed that DcR3 could reverse the promoting effect of miR-148b on the CD86/CD163 ratio of macrophages (P<0.05). Conclusion: miR-148b inhibits the expression of DcR3, thereby inhibiting M2 polarization in LPS-stimulated macrophage cells.

[Research progress on the relationship between COVID-19 and autoimmune diseases].

Different autoantibodies can be detected in patients with coronavirus disease 2019 (COVID-19). It is reported that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection could induce autoimmune diseases (AID), including children's multisystem inflammatory syndrome (MIS-C), Guillain Barre syndrome (GBS), Autoimmune hemolytic anemia (AIHA), immune thrombocytopenia (ITP) and thyroid autoimmune diseases. This article mainly reviews the similarities between COVID-19 and AID, the possibility of COVID-19 inducing AID, the risk of AID patients infected or vaccinated against COVID-19. The purpose is to provide strategies for the prevention, management and treatment of AID during the epidemic.

[Drug resistance and genomic characteristics of Salmonella enterica serovar London from clinical and food sources in Hangzhou City from 2017 to 2021].

Objective: To analyze the drug resistance and genomic characteristics of Salmonella enterica serovar London isolated from clinical and food sources in Hangzhou City from 2017 to 2021. Methods: A total of 91 Salmonella enterica serovar London strains isolated from Hangzhou City from 2017 to 2021 were analyzed for drug susceptibility, pulsed field gel electrophoresis (PFGE) typing and whole genome sequencing. Multilocus sequence typing (MLST), core genome multilocus sequence typing (cgMLST) and detection of drug resistance genes were performed by using the sequencing data. Phylogenetic analysis was conducted to compare the 91 genomes from Hangzhou City with 347 genomes from public databases. Results: No significant difference in the drug resistance rate was observed between clinical strains and food strains to 18 drugs in Hangzhou City(all P>0.05), and the multidrug resistance (MDR) rate was 75.8% (69/91). Most strains were resistant to 7 drug classes simultaneously. One strain was resistant to Polymyxin E as well as positive for mcr-1.1, and 50.5% (46/91) of the strains were resistant to Azithromycin and were positive for mph(A). All 91 Salmonella enterica serovar London strains were ST155, which were subdivided into 44 molecular types by PFGE and 82 types by cgMLST. Phylogenetic analysis showed that most strains from Hangzhou City (83/91) were clustered together, and a small number of human isolates from Europe, North America and pork isolates from Hubei and Shenzhen were mixed in the cluster. Other strains from Hangzhou City (8/91) were closely related to strains from Europe, America and Southeast Asia. Strains isolated from pork were the most closely related to clinical strains. Conclusion: The epidemic of Salmonella enterica serovar London in Hangzhou City is mainly caused by the spread of ST155 strains, which is mainly transmitted locally. At the same time, cross-region transmission to Europe, North America, Southeast Asia, and other provinces and cities in China may also occur. There is no significant difference in the drug resistance rate between clinical strains and food strains, and a high level of MDR is found in the strains. Clinical infection of Salmonella enterica serovar London may be closely related to pork consumption in Hangzhou City.

[Epidemiological investigation on the local epidemic situation in Zhengzhou High-Tech Zone caused by SARS-CoV-2 Delta variant].

This study collected epidemic data of COVID-19 in Zhengzhou from January 1 to January 20 in 2022. The epidemiological characteristics of the local epidemic in Zhengzhou High-tech Zone caused by the SARS-CoV-2 Delta variant were analyzed through epidemiological survey and big data analysis, which could provide a scientific basis for the prevention and control of the Delta variant. In detail, a total of 276 close contacts and 599 secondary close contacts were found in this study. The attack rate of close contacts and secondary close contacts was 5.43% (15/276) and 0.17% (1/599), respectively. There were 10 confirmed cases associated with the chain of transmission. Among them, the attack rates in close contacts of the first, second, third, fourth and fifth generation cases were 20.00% (5/25), 17.86% (5/28), 0.72% (1/139) and 14.81% (4/27), 0 (0/57), respectively. The attack rates in close contacts after sharing rooms/beds, having meals, having neighbor contacts, sharing vehicles with the patients, having same space contacts, and having work contacts were 26.67%, 9.10%, 8.33%, 4.55%, 1.43%, and 0 respectively. Collectively, the local epidemic situation in Zhengzhou High-tech Zone has an obvious family cluster. Prevention and control work should focus on decreasing family clusters of cases and community transmission.

[A case of acute poisoning with thiamethoxam].

Thiamethoxam belongs to the second generation of neonicotinoid insecticides, and case of acute poisoning with thiamethoxam had never reported in China. This paper reviewed a case of oral poisoning with thiamethoxam pesticides, the patient suffered vomiting, generalized convulsions, confusion, and decreased oxygen saturation. After treated with gastric lavage, ventilator support, and the use of propofol, midazolam, sodium phenobarbital, and sodium valproate, the convulsions could not be controlled. Untill treated with penehyclidine hydrochloride and hemoperfusion combined with hemofiltration, the patient finally recovered and was discharged from the hospital. We suggest that the main treatments for acute severe thiamethoxam poisoning are decontamination and symptomatic support, pentoxifylline hydrochloride and hemoperfusion combined with hemofiltration may improve the patients' prognosis.

THE OCCURRENCE OF ACUTE PANCREATITIS AFTER IODINE 131 TREATMENT OF HYPERTHYROIDISM.

Acute pancreatitis is a common and potentially fatal gastrointestinal disease. We report a case of acute pancreatitis induced by iodine-131 therapy for hyperthyroidism. Iodine 131 is distributed through the blood, so it can accumulate and damage normal tissues in other parts of the body that are involved in thyroid hormone metabolis.

Distinct Kondo Screening Behaviors in Heavy Fermion Filled Skutterudites with 4f

CeOs_{4}Sb_{12} (COS) and PrOs_{4}Sb_{12} (POS) are two representative compounds that provide the ideal vantage point to systematically study the physics of multi-f-electron systems. COS with Ce 4f^{1}, and POS with Pr 4f^{2} configurations show distinct properties of Kondo insulating and heavy fermion superconductivity, respectively. We unveiled the underlying microscopic origin by angle-resolved photoemission spectroscopy studies. Their eV-scale band structure matches well, representing the common characters of conduction electrons in ROs_{4}Sb_{12} systems (R=rare earth). However, f electrons interact differently with conduction electrons in COS and POS. Strong hybridization between conduction electrons and f electrons is observed in COS with band dependent hybridization gaps, and the development of a Kondo insulating state is directly revealed. Although the ground state of POS is a singlet, finite but incoherent hybridization exists, which can be explained by the Kondo scattering with the thermally excited triplet crystalline electric field state. Our results help us to understand the intriguing properties in COS and POS, and provide a clean demonstration of the microscopic differences in heavy fermion systems with 4f^{1} and 4f^{2} configurations.

[Methylation status and expression of TWEAK gene promoter region in peripheral blood of patients with rheumatoid arthritis].

OBJECTIVE: To explore the relationship between tumor necrosis factor like weak inducer of apoptosis (TWEAK) gene and the pathogenesis of rheumatoid arthritis (RA) by detecting the DNA methylation level, mRNA expression level and serum protein concentration of TWEAK gene in peripheral blood. METHODS: The MassARRAY method was used to detect the DNA methylation level of the TWEAK gene in the peripheral blood of 112 RA patients and 86 matched healthy volunteers. The real-time quantitative polymerase chain reaction method was used to detect the mRNA expression level of the TWEAK gene in the peripheral blood of the subjects. The enzyme-linked immunosorbent assay method was used to detect the serum TWEAK protein concentration of the subjects. The TWEAK gene DNA methylation level, mRNA expression level and serum protein concentration between the RA group and the healthy control group were compared, and the relationship between it and the degree of disease activity analyzed. RESULTS: The overall DNA methylation level of TWEAK gene and the DNA methylation levels of CpG_11, CpG_17.18.19.20, CpG_40.41.42 site in the RA group were higher than those in the healthy control group (P=0.002, P=0.01, P=0.006, P=0.002, respectively). The DNA methylation level of CpG_55.56 site in the high disease activity group was higher than that in the medium and low disease activity group (P=0.041). The expression level of TWEAK gene mRNA in the peripheral blood of the RA group was lower than that of the healthy control group (P=0.023). The expression level of TWEAK gene mRNA in the high disease activity group was lower than that in the medium and low disease activity group (P=0.035). The serum TWEAK protein concentration of the RA group was not significantly different from that of the healthy control group (P=0.508), but it was positively correlated with the mRNA expression level (r=0.482, P < 0.001). CONCLUSION: The TWEAK gene is closely related to the onset and progression of RA, and its hypermethylation state may be one of the epigenetic mechanisms regulating its low mRNA expression, and it can be used as one of the important indicators for clinical monitoring and evaluation of RA.

[Research progress on antibody-dependent enhancement in infectious diseases].

Antibody-dependent enhancement (ADE) refers to the process in which some virus-specific antibodies (generally non-neutralizing antibodies) bind to the virus and bind to some cells expressing FcR on the surface through their Fc segment, thereby mediating the endocytosis and replication of the virus and enhancing the infection of the virus. This review summarized experience of ADE in respiratory syncytial virus, dengue virus, influenza virus infection and explored the possible mechanism of COVID-19 high incidence and severity of the disease, which implied challenges in the process of vaccine development and provided some insights for COVID-19 pathogenesis.

[Gingival thickness assessment of gingival recession teeth].

OBJECTIVE: To evaluate the gingival thickness and gingival biotype of gingival recession teeth of Chinese population. METHODS: A total of 112 non-molar teeth with gingival recession in 34 patients were included. Direct measurement, cone-beam computerized tomography (CBCT) measurement and periodontal probe method were used to evaluate gingival thickness and biotype. Gingival thickness was measured at 2 mm apical to the gingival margin. Direct measurement was performed with a caliper of 0.01 mm resolution and anesthesia needles attached to silicone disk stops. Gingival biotype was assessed by sulcus probing, if the periodontal probe was visible through the gingival tissue, the gingival biotype was thin; If not visible, the gingival biotype was thick. The differences of gingival thickness among different gingival biotype, tooth site and gingival recession type were analyzed respectively. Besides, the results of CBCT measurement was analyzed compared with the direct measurement. RESULTS: The average gingival thickness of non-molar recession teeth was (1.17±0.41) mm. The average gingival thickness of thick and thin biotype group were (1.38±0.4) mm and (0.97±0.30) mm, respectively, with statistically significant difference (P<0.001). The median of gingival thickness was 1.1 mm. Using 1.1 mm as the cut-off value of thick and thin gingival thickness group, the results matched well with the gingival biotype classification results by periodontal probe method (P=1.000). The average gingival thickness of maxillary teeth was significantly thicker than that of the mandibular teeth. They were (1.39±3.44) mm and (1.01±0.31) mm, respectively (P<0.001). The mean gingival thickness of MillerI, II and III degree gingival recession teeth were (1.15±0.34) mm, (0.83±0.17) mm and (1.26±0.56) mm, respectively, without statistically significant difference (P=0.205). The gingival thickness measurement results between CBCT method and direct measurement were without statistically significant difference (P=0.206). CONCLUSION: In the non-molar gingival recession teeth, the cut-off value of gingival thickness to classify thick and thin biotype of Chinese population was 1.1 mm. The average gingival thickness of the maxillary teeth was significantly thicker than that of the mandibular teeth. Besides, CBCT measurement was an accuracy method for evaluating facial gingival thickness.

[Consideration and prevention of the aerosol transmission of 2019 novel coronavirus].

This article was published ahead of print on the official website of Chinese Journal of Ophthalmology on March 14, 2020. Novel coronavirus pneumonia broke out and spread to the whole nation since December 2019. The fight against the virus is now at a critical stage. Previous epidemiological investigations and animal experiments suggested aerosol could perform as a virus transmitter. Based on the clinical observation, the possibility of aerosol transmission of 2019 novel coronavirus has aroused much attention. This article focuses on the feature of aerosol transmission and the pathogens involved in. We analyze the possibility of aerosol transmission of the novel coronavirus. Relevant strategies for preventing novel coronavirus pneumonia are established for the medical personnel and general public during their work or daily life. (Chin J Ophthalmol, 2020, 56:653-656).

[The joint effect of abdominal obesity in childhood and adulthood on adult hypertension].

Objective: To investigate the joint effect of abdominal obesity in childhood and adulthood on adult hypertension. Methods: Based on the data from the China Health and Nutrition Survey (CHNS, 1993-2011), a total of 1 431 subjects who were investigated in both childhood (6 to17 years old) and young adulthood (18 to 35 years old) were selected for the analysis. According to waist circumference (WC) status (normal WC or abdominal obesity) in childhood and adulthood, all subjects were categorized into 4 groups. The multinomial logistic regression model was used to analyze the joint effect of abdominal obesity in childhood and adulthood on adult hypertension and pre-hypertension. Results: Compared to the subjects (n=1 057) who had normal WC in both childhood and adulthood, subjects with abdominal obesity in childhood but with normal WC (n=45) in adulthood didn't have significantly increased risk of hypertension (OR=1.52, 95%CI: 0.19-12.06). In contrast, those who had normal WC in childhood and abdominal obesity in adulthood (n=289) had increased risk of hypertension (OR=6.48, 95%CI: 3.60-11.66). In addition, subjects with persistent abdominal obesity from childhood to adulthood (n=40) had the highest risk of hypertension (OR=15.98, 95%CI: 5.39-47.35). There was a similar trend for the association of abdominal obesity in childhood and adulthood with adult pre-hypertension, with the corresponding OR (95%CI) of 1.28 (0.66-2.49), 2.90 (2.17-3.89) and 3.49 (1.65-7.40), respectively. Conclusion: The joint effect of abdominal obesity in childhood and adulthood increased the risk of adult hypertension and pre-hypertension. There was no statistical significance for subjects who had abdominal obesity in childhood but had normal WC in adulthood when compared to those with normal WC in both childhood and adulthood.

Unveiling the Superconducting Mechanism of Ba_{0.51}K_{0.49}BiO_{3}.

The mechanism of high superconducting transition temperatures (T_{c}) in bismuthates remains under debate despite more than 30 years of extensive research. Our angle-resolved photoemission spectroscopy studies on Ba_{0.51}K_{0.49}BiO_{3} reveal an unexpectedly 34% larger bandwidth than in conventional density functional theory calculations. This can be reproduced by calculations that fully account for long-range Coulomb interactions-the first direct demonstration of bandwidth expansion due to the Fock exchange term, a long-accepted and yet uncorroborated fundamental effect in many body physics.Furthermore, we observe an isotropic superconducting gap with 2Δ_{0}/k_{B}T_{c}=3.51±0.05, and strong electron-phonon interactions with a coupling constant λ∼1.3±0.2. These findings solve a long-standing mystery-Ba_{0.51}K_{0.49}BiO_{3} is an extraordinary Bardeen-Cooper-Schrieffer superconductor, where long-range Coulomb interactions expand the bandwidth, enhance electron-phonon coupling, and generate the high T_{c}. Such effects will also be critical for finding new superconductors.

[Epidemiological investigation and analysis of the effect of using diapers on daytime urinary incontinence on children].

Objective: To investigate the relationship between the incidence of daytime urinary incontinence(DUI)and the usage of diapers. Methods: The stratified sampling method was used to investigate the relationship between the incidence of DUI and the usage of diapers on children from 3 to 10 years old from 30 kindergarten and primary schools in Henan Province, China. The survey was carried out in the way of anonymous questionnaire. Results: A total of 8 560 qualified questionnaires(96.2%) were collected and used for statistical analysis. The overall incidence of DUI was 3.52%. With the age increasing, the incidence of DUI was decreased(χ(2)(trend)=75.690, P<0.001) from 6.06% for 3 years old children to 1.82% for 10 years old children. With the time of usage diapers increased, the rate of urination training was significantly reduced(χ(2)(trend)=84.260, P<0.001), and the incidence of DUI was significantly increased(χ(2)(trend)=18.824, P<0.001). With the increase of using diapers, the incidence of DUI increased (χ(2)(trend)=9.234, P<0.01). With the delay of the starting time of urination training, the incidence of DUI was increasing( χ(2)(trend)=9.775, P<0.01). Logistic regression analysis showed that the increase of time of using diapers(OR=1.017, 95% CI: 1.006-1.027, P<0.01)and the increase of frequency of using diapers(OR=1.290, 95% CI: 1.002-1.025, P<0.05)contribute to DUI significantly. Urination training starts from 0 to 6 months was a protective factor against DUI(OR=0.529, 95% CI: 0.345-0.811, P<0.01). Conclusions: The usage of diapers is the risk factor of DUI. It's better to start urination training earlier to help reduce the incidence of DUI in children.

[Preliminary application of next generation sequencing technique in pathogen identification of foodborne disease].

Objective: To analyze genomic features of pathogens based on next generation sequencing technique in a food-borne disease event. Methods: A total of 11 blood samples, stomach contents before gastric lavage from the death and patients' foods were collected. S. aureus, B. cereus and toxic substances were detected. B. cereus detected in foods were counted. The conserved region of 16 S rDNA gene and ces gene(cereulide) of B. cereus isolates were detected by real-time PCR. Next Generation Sequencing (NGS) technology was applied to acquire genome sequences of isolates. Different plasmids distribution and comparative genomics analysis with reference sequences in public databases were analyzed. Results: Only B. cereus tested positive in all samples. The counts of B. cereus in Egg fried rice, one food samples, were 1.9×10(7) CFU/g, and the counts of B. cereus in dried and fried fish and brine pork head meat samples were 3.0×10(3) CFU/g both. Ten isolates were carrying hlyⅢ, nheA, nheB, inlA and inhA genes, and nine isolates carried the plcR gene and nine isolates carried the nheC gene. The PCR result of 16 S rDNA gene and ces gene of all isolates were positive. All carried the complete ces genes cluster sequence which were identical to the sequence of plasmid pCER270 (NC_01 0924.1) from strain AH187 in United Kingdom and pNCcld (NC_016792.1) from NC7401 in Japan. The alignment of plasmids turned out the sequence of the isolate differed from the pXO1 and pXO2 plasmids of B. anthracis, but carried the pNCcld plasmid containing the ces genes cluster. The phylogenetic tree based on genomic sequences of ten isolates showed high similarity (distances in phylogenetic tree from 2.0×10(-6)-9.0×10(-6)) to each other and to the B. cereus strains AH187 and NC7401 (MLST ST26 type, distances in phylogenetic tree from 3.8×10(-5)-4.5×10(-5)). Conclusion: The foodborne disease event was caused by vomiting type Bacillus cereus without plasmid pXO1 and pXO2 contaminated egg fried rice. The vomiting-type food poisoning caused by B. Cereus globally is probably associated with ST26, ST164 and other strains harboring ces gene.

[Associations between overweight-obesity and puberty timing in children with different genders in China].

Objective: To understand the associations between overweight-obesity and puberty timing in children with different genders. Methods: The girls in grade 2, 3, 7, 8 and boys in grade 3, 4, 7, 8 were recruited from primary and middle schools in North new area of Shenyang, Yanqing district of Beijing, Erqi district of Zhengzhou and Jiulongpo district of Chongqing by purposive sampling method between October and December 2014, respectively. The information of demographic characteristics of the respondents were collected and the pubertal development status was evaluated by Pubertal Development Scale (PDS). A total of 6 701 students were recruited; 6 137 out of which were valid with complete questionnaires. The associations between overweight-obesity and puberty timing were estimated by multivariate logistic regression analysis. Results: The prevalence of overweight-obesity in primary schools were 34.8% (522/1 499) among boys and 24.2% (341/1 409) among girls, respectively. The prevalence of overweight-obesity in middle schools were 31.3% (591/1 658) among boys and 21.8% (342/1 571) among girls, respectively. The prevalence of premature puberty in primary schools were 15.0% (225/1 499) among boys and 14.2% (200/1 409) among girls, respectively. The prevalence of delayed puberty in middle schools were 14.3% (237/1 658) among boys and 14.9% (234/1 571) among girls, respectively. After adjusting the effects of region, age, one-child, family income and the parents' educational levels, multivariate logistic regression analysis showed that overweight-obesity had significantly positive association with premature puberty (OR=2.16, 95%CI: 1.56-2.99) among girls in primary schools, and significantly negative association with delayed puberty (OR=0.54, 95%CI: 0.36-0.80) among girls in middle schools when compared with students with normal weights, both P values were <0.05. There was no significant associations among boys in primary and middle schools between overweight-obesity and puberty timing, and the corresponding OR(95%CI) were 1.08(0.80-1.45) and 0.93(0.69-1.27) respectively, both P values >0.05. Conclusion: There was significantly positive association between overweight-obesity and premature puberty among girls, and significantly negative association with delayed puberty among girls in middle schools; but the association was not found among boys.