1.Compliance of residents with repeated screening for colorectal cancer in Jiading District, Shanghai
Dan CHEN ; Yawei WANG ; Fang HUANG ; Yifan XU ; Fang XIANG ; Yiying ZHANG ; Na WANG ; Yueqin SHAO
Shanghai Journal of Preventive Medicine 2024;36(7):706-711
ObjectiveTo explore the compliance related factors of repeated screening for colorectal cancer in Jiading District, and to provide a scientific basis for the prevention and control of colorectal cancer. MethodsBased on the natural population cohort in Jiading District, and the screening situation in 2017‒2019 and 2020‒2022, the study subjects were divided into the groups of never participating in screening and participating in screening. Subjects in the participating group were further divided into participating in one round of screening or having repeated screening. SPSS 21.0 software was used to analyze the demographic characteristics of each group. χ2 test or Fisher precise probability test were used to conduct univariate analysis of the factors such as gender, age, education level, marital status, retirement status, and type of medical insurance. Factors with the significant difference (P<0.05) were selected for inclusion in multivariate analysis, and factors related to compliance with repeated screening were analyzed by multivariate logistic regression. ResultsA total of 8 179 subjects were included in the study, including 3 323 males (40.6%) and 4 856 females (59.4%). The average age of the subjects was (61.26±6.06) years old. A total of2 652 (32.4%) had educated in primary school or below, 4 242 (51.9%) in secondary school, and 1 285 (15.7%) in higher secondary school. Mostly, 7 579 (92.7%) were married. Among the participants, 4 062 people had never participated in screening, 4 117 people had participated in screening, and 1 485 of them had repeated screening, with a repeated screening rate of 18.2%. Multivariate logistic regression analysis showed that women had better compliance with repeated screening than men (OR=1.31, 95%CI: 1.14‒1.50). Compared with the population aged 50 to 54 years, the population aged 55‒59 years (OR=1.57, 95%CI: 1.19‒2.08), 60-64 years (OR=2.77, 95%CI: 2.13‒3.61), and 65-69 years (OR=3.31, 95%CI: 2.51‒4.36) had higher compliance with repeated screening. Compared with employees' medical insurance, residents' medical insurance group had worse compliance with repeated screening (OR=0.76, 95%CI: 0.66‒0.87). People with a history of intestinal polyps were more likely to undergo repeat screening than those without (OR=2.07, 95%CI: 1.50‒2.87). ConclusionCompliance with repeated screening for colorectal cancer still needs to be improved, and there are differences in compliance with repeated screening for different populations with different characteristics. Identifying groups that are unlikely to adhere to community-based colorectal cancer screening and taking targeted interventions can help improve the continued compliance of residents with colorectal cancer screening.
2.Evaluation of metoprolol standard dosing pathway in Chinese patients with acute coronary syndrome: a prospective multicenter single-arm interventional study.
Xiao-Yun YIN ; Yun-Mei ZHANG ; Ai-Dong SHEN ; Jing-Ping WANG ; Zhe-Xun LIAN ; Yi-Bing SHAO ; Wen-Qi ZHANG ; Shu-Ying ZHANG ; Yang ZHENG ; Kang CHENG ; Biao XU ; Cheng-Xing SHEN ; Rong-Chong HUANG ; Jin-Cheng GUO ; Guo-Sheng FU ; Dong-Kai SHAN ; Dan-Dan LI ; Yun-Dai CHEN
Journal of Geriatric Cardiology 2023;20(4):256-267
OBJECTIVE:
To evaluate the feasibility and tolerability of metoprolol standard dosing pathway (MSDP) in Chinese patients with acute coronary syndrome (ACS).
METHODS:
In this multicenter, prospective, open label, single-arm and interventional study that was conducted from February 2018 to April 2019 in fifteen Chinese hospitals. A total of 998 hospitalized patients aged ≥ 18 years and diagnosed with ACS were included. The MSDP was applied to all eligible ACS patients based on the standard treatment recommended by international guidelines. The primary endpoint was the percentage of patients achieving the target dose at discharge (V2). The secondary endpoints included the heart rate and blood pressure at V2 and four weeks after discharge (V4), and percentage of patients experiencing bradycardia (heart rate < 50 beats/min), hypotension (blood pressure < 90/60 mmHg) and transient cardiac dysfunction at V2 and V4.
RESULTS:
Of the 998 patients, 29.46% of patients achieved the target dose (≥ 95 mg/d) at V2. The total population was divided into two groups: target group (patients achieving the target dose at V2) and non-target group (patients not achieving the target dose at V2). There was significant difference in the reduction of heart rate from baseline to discharge in the two groups (-4.97 ± 11.90 beats/min vs. -2.70 ± 9.47 beats/min, P = 0.034). There was no significant difference in the proportion of bradycardia that occurred in the two groups at V2 (0 vs. 0, P = 1.000) and V4 (0.81% vs. 0.33%, P = 0.715). There was no significant difference in the proportion of hypotension between the two groups at V2 (0.004% vs. 0.004%, P = 1.000) and V4 (0 vs. 0.005%, P = 0.560). No transient cardiac dysfunction occurred in two groups during the study. A total of five adverse events (1.70%) and one serious adverse event (0.34%) were related to the pathway in target group.
CONCLUSIONS
In Chinese ACS patients, the feasibility and tolerability of the MSDP have been proved to be acceptable.
3.Effect of Circular RNA hsa_circ_0067582 on the Proliferation and Invasion Ability of Gastric Cancer Cells.
Rong-Dan LU ; Zhe HUANG ; Jia-Min LU ; Hai-Qiang ZHANG ; Yong-Fu SHAO
Acta Academiae Medicinae Sinicae 2022;44(1):81-90
Objective To investigate the effects on cell proliferation and invasion of the circular RNA hsa_circ_0067582 in gastric cancer(GC). Methods After hsa_circ_0067582 overexpression (Oe-circ_0067582) plasmid was transfected into AGS and SGC-7901 cells,the cell viability,proliferation,invasion ability,and apoptosis were detected by CCK-8,colony formation and EdU assays,Transwell assay,and flow cytometry,respectively.Western blotting was employed to detect the expression levels of proteins related to the cell apoptosis and epithelial-mesenchymal transition(EMT).The effect of Oe-circ_0067582 on the growth of SGC-7901 cells in nude mice was observed.Bioinformatics tools were used to predict the binding target miRNA of hsa_circ_0067582,and the competing endogenous RNA(ceRNA)regulatory network was established.Finally,functional enrichment was performed to analyze the biological functions of the target genes of the predicted miRNA. Results Compared with the pLO-ciR(empty plasmid)group,the Oe-circ_0067582 group in AGS and SGC-7901 cells attenuated the cell viability(t=7.883,P=0.001;t=5.679,P=0.005),proliferation(t=6.709,P=0.003;t=5.857,P=0.003),and invasion ability(t=7.782,P=0.002;t=6.342,P=0.003)and induced cell apoptosis(t=7.225,P=0.002;t=11.509,P=0.001).Western blotting showed that the Oe-circ_0067582 group in AGS and SGC-7901 cells up-regulated the protein levels of cysteinyl aspartate specific proteinase (Caspase) 3(t=6.863,P=0.002;t=7.024,P=0.001),Caspase 7(t=3.295,P=0.04;t=6.008,P=0.004),Caspase 9(t=4.408,P=0.012;t=6.278,P=0.004),and E-cadherin(t=12.453,P=0.002;t=10.867,P=0.001),while down-regulated those of Vimentin(t=7.242,P=0.002;t=5.694,P=0.004)and N-cadherin(t=6.480,P=0.003;t=7.446,P=0.001).Furthermore,Oe-circ_0067582 significantly inhibited the growth of tumor in the SGC-7901 tumor-bearing nude mice(t=3.526,P=0.017).The prediction based on TargetScan and miRnada suggested that hsa_circ_0067582 can competitively bind to hsa-miR-181b-3p,hsa-miR-337-3p,hsa-miR-421,and hsa-miR-548d-3p.The functional enrichment indicated that the target genes of miRNA were involved in multiple cancer-related biological processes including negative regulation of apoptotic process,gene expression,transcriptional misregulation in cancer,transforming growth factor-β,and p53 signaling pathways. Conclusion Oe-circ_0067582 can inhibit the proliferation and attenuate EMT process to reduce the invasion ability of AGS and SGC-7901 cells,which provides a new target for the treatment of GC.
Animals
;
Cell Proliferation
;
Gene Expression Regulation, Neoplastic
;
Mice
;
Mice, Nude
;
RNA, Circular
;
Stomach Neoplasms/pathology*
4.Clinical effect of different maintenance doses of caffeine citrate in the treatment of preterm infants requiring assisted ventilation: a pilot multicenter study.
Yang YANG ; Ke-Yu LU ; Rui CHENG ; Qin ZHOU ; Guang-Dong FANG ; Hong LI ; Jie SHAO ; Huai-Yan WANG ; Zheng-Ying LI ; Song-Lin LIU ; Zhen-Guang LI ; Jin-Lan CAI ; Mei XUE ; Xiao-Qing CHEN ; Zhao-Jun PAN ; Yan GAO ; Li HUANG ; Hai-Ying LI ; Lei SONG ; San-Nan WANG ; Gui-Hua SHU ; Wei WU ; Meng-Zhu YU ; Zhun XU ; Hong-Xin LI ; Yan XU ; Zhi-Dan BAO ; Xin-Ping WU ; Li YE ; Xue-Ping DONG ; Qi-Gai YIN ; Xiao-Ping YIN ; Jin-Jun ZHOU
Chinese Journal of Contemporary Pediatrics 2022;24(3):240-248
OBJECTIVES:
To explore the optimal maintenance dose of caffeine citrate for preterm infants requiring assisted ventilation and caffeine citrate treatment.
METHODS:
A retrospective analysis was performed on the medical data of 566 preterm infants (gestational age ≤34 weeks) who were treated and required assisted ventilation and caffeine citrate treatment in the neonatal intensive care unit of 30 tertiary hospitals in Jiangsu Province of China between January 1 and December 31, 2019. The 405 preterm infants receiving high-dose (10 mg/kg per day) caffeine citrate after a loading dose of 20 mg/kg within 24 hours after birth were enrolled as the high-dose group. The 161 preterm infants receiving low-dose (5 mg/kg per day) caffeine citrate were enrolled as the low-dose group.
RESULTS:
Compared with the low-dose group, the high-dose group had significant reductions in the need for high-concentration oxygen during assisted ventilation (P=0.044), the duration of oxygen inhalation after weaning from noninvasive ventilation (P<0.01), total oxygen inhalation time during hospitalization (P<0.01), the proportion of preterm infants requiring noninvasive ventilation again (P<0.01), the rate of use of pulmonary surfactant and budesonide (P<0.05), and the incidence rates of apnea and bronchopulmonary dysplasia (P<0.01), but the high-dose group had a significantly increased incidence rate of feeding intolerance (P=0.032). There were no significant differences between the two groups in the body weight change, the incidence rates of retinopathy of prematurity, intraventricular hemorrhage or necrotizing enterocolitis, the mortality rate, and the duration of caffeine use (P>0.05).
CONCLUSIONS
This pilot multicenter study shows that the high maintenance dose (10 mg/kg per day) is generally beneficial to preterm infants in China and does not increase the incidence rate of common adverse reactions. For the risk of feeding intolerance, further research is needed to eliminate the interference of confounding factors as far as possible.
Caffeine/therapeutic use*
;
Citrates
;
Humans
;
Infant
;
Infant, Newborn
;
Infant, Premature
;
Respiration, Artificial
;
Retrospective Studies
5.Effect and influence factors of cardiopulmonary resuscitation in children with congenital heart disease in pediatric intensive care unit.
Gang LIU ; Jian Ping CHU ; Jian Li CHEN ; Su Yun QIAN ; Dan Qun JIN ; Xiu Lan LU ; Mei Xian XU ; Yi Bing CHENG ; Zheng Yun SUN ; Hong Jun MIAO ; Jun LI ; Sheng Ying DONG ; Xin DING ; Ying WANG ; Qing CHEN ; Yuan Yuan DUAN ; Jiao Tian HUANG ; Yan Mei GUO ; Xiao Na SHI ; Jun SU ; Yi YIN ; Xiao Wei XIN ; Shao Dong ZHAO ; Zi Xuan LOU ; Jing Hui JIANG ; Jian Sheng ZENG
Chinese Journal of Pediatrics 2022;60(3):197-202
Objective: To investigate the prognostic factors of children with congenital heart disease (CHD) who had undergone cardiopulmonary resuscitation (CPR) in pediatric intensive care unit (PICU) in China. Methods: From November 2017 to October 2018, this retrospective multi-center study was conducted in 11 hospitals in China. It contained data from 281 cases who had undergone CPR and all of the subjects were divided into CHD group and non-CHD group. The general condition, duration of CPR, epinephrine doses during resuscitation, recovery of spontaneous circulation (ROSC), discharge survival rate and pediatric cerebral performance category in viable children at discharge were compared. According to whether malignant arrhythmia is the direct cause of cardiopulmonary arrest or not, children in CHD and non-CHD groups were divided into 2 subgroups: arrhythmia and non-arrhythmia, and the ROSC and survival rate to discharge were compared. Data in both groups were analyzed by t-test, chi-square analysis or ANOVA, and logistic regression were used to analyze the prognostic factors for ROSC and survival to discharge after cardiac arrest (CA). Results: The incidence of CA in PICU was 3.2% (372/11 588), and the implementation rate of CPR was 75.5% (281/372). There were 144 males and 137 females with median age of 32.8 (5.6, 42.7) months in all 281 CPA cases who received CPR. CHD group had 56 cases while non-CHD had 225 cases, with the percentage of 19.9% (56/281) and 80.1% (225/281) respectively. The proportion of female in CHD group was 60.7% (34/56) which was higher than that in non-CHD group (45.8%, 103/225) (χ2=4.00, P=0.045). There were no differences in ROSC and rate of survival to discharge between the two groups (P>0.05). The ROSC rate of children with arthythmid in CHD group was 70.0% (28/40), higher than 6/16 for non-arrhythmic children (χ2=5.06, P=0.024). At discharge, the pediatric cerebral performance category scores (1-3 scores) of CHD and non-CHD child were 50.9% (26/51) and 44.9% (92/205) respectively. Logistic regression analysis indicated that the independent prognostic factors of ROSC and survival to discharge in children with CHD were CPR duration (odds ratio (OR)=0.95, 0.97; 95%CI: 0.92~0.97, 0.95~0.99; both P<0.05) and epinephrine dosage (OR=0.87 and 0.79, 95%CI: 0.76-1.00 and 0.69-0.89, respectively; both P<0.05). Conclusions: There is no difference between CHD and non-CHD children in ROSC and survival rate of survival to discharge was low. The epinephrine dosage and the duration of CPR are related to the ROSC and survival to discharge of children with CHD.
Cardiopulmonary Resuscitation
;
Child
;
Child, Preschool
;
Female
;
Heart Arrest/therapy*
;
Heart Defects, Congenital/therapy*
;
Humans
;
Intensive Care Units, Pediatric
;
Male
;
Retrospective Studies
6.Factors associated with death and attrition in HIV-infected children under initial antiretroviral therapy in Guangxi Zhuang Autonomous Region, 2004 - 2019.
Ye Sheng ZHOU ; Liu Hong LUO ; Mei LIN ; Hong Li CHEN ; Jing Hua HUANG ; Qiu Ying ZHU ; Huan Huan CHEN ; Zhi Yong SHEN ; Jian Jun LI ; Yi FENG ; Dan LI ; Ling Jie LIAO ; Hui XING ; Yi Ming SHAO ; Yu Hua RUAN ; Guanghua LAN
Chinese Journal of Epidemiology 2022;43(9):1430-1435
Objective: To investigate death and attrition in HIV-infected children under initial antiretroviral therapy (ART) and associated factors in Guangxi Zhuang autonomous region. Methods: This retrospective cohort study was conducted in HIV-infected children under initial ART in Guangxi from 2004 to 2019, data from ART information system of National comprehensive AIDS prevention and treatment information system. Cox proportional hazards models were used to assess factors associated with the death and attrition. Results: In 943 HIV-infected children, the overall mortality and attrition rates were 1.00/100 person-years and 0.77/100 person-years, respectively. The mortality and attrition rates within the first year of ART were 3.90/100 person-years and 1.67/100 person-years, respectively. The cumulative survival rate during the first, second, fifth and tenth year after ART was 96.14%, 95.80%, 93.68% and 91.54%, respectively. Multivariate Cox proportional hazards models results showed that being female (aHR=2.00, 95%CI: 1.17-3.40), CD4+T lymphocytes (CD4) counts before ART <200 cells/μl (aHR=2.79, 95%CI: 1.54-5.06), weight-for-age Z score before ART <-2 (aHR=2.38, 95%CI: 1.32-4.26), hemoglobin before ART <80 g/L (aHR=2.47, 95%CI: 1.24-4.92), initial ART with LPV/r (aHR=5.05, 95%CI: 1.15-22.12) were significantly associated with death; being female (aHR=2.23, 95%CI: 1.22-4.07) and initial ART with LPV/r (aHR=2.02, 95%CI: 1.07-3.79) were significantly associated with attrition. Conclusions: The effect of ART in HIV-infected children in Guangxi was better, but the mortality and attrition rates were high within the first year of treatment. It is necessary to strengthen the training in medical staff and health education in HIV-infected children and their parents in order to improve the treatment effect.
Anti-HIV Agents/therapeutic use*
;
Child
;
China/epidemiology*
;
Female
;
HIV Infections/drug therapy*
;
Humans
;
Male
;
Proportional Hazards Models
;
Retrospective Studies
7.The role of RUNX1 in the apoptosis of epithelial cells in nasal polyps.
Yin Yin PEI ; Dan Yi HUANG ; Ting ZHANG ; Wei ZHANG ; Jie ZHANG ; Shao Cong ZHANG ; Yun LEI ; Yong ZHOU ; Lei CHENG ; Jing CHEN
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2021;56(12):1328-1335
Objective: To explore the expression of Runt-related transcription factor 1 (RUNX1) in nasal polyps (NPs) tissues and the potential role on apoptosis of primary human nasal epithelial cells (pHNECs) in NPs. Methods: The expression level of RUNX1 in NPs tissues was determined by Western blot (WB) and immunohistochemical staining (IHC). In vitro, TNF-α (20 ng/ml) was used to stimulate pHNECs to establish the apoptosis injury model. Hoechst staining was performed to observe pHNECs apoptosis by kit. Subsequently, quantitative real-time PCR (qRT-PCR) and WB were utilized to detect the expression of apoptosis-related proteins B-cell lymphoma-2 (BCL-2), BCL2-associated X (BAX) and cysteinyl aspartate specific proteinase-3 (Caspase-3) to assess the level of apoptosis. The plasmid of sh-RUNX1-6 was transfected into the pHNECs apoptosis model, then the effect of RUNX1 silence on apoptosis was evaluated by WB and flow cytometry. Statistical analysis was performed by the SPSS 19.0 and GraphPad Prism5 software. Results: The expression of RUNX1 in NPs tissue was significantly higher than that in inferior turbinates, and the difference was statistically significant (0.274±0.042 vs 0.110±0.027, t=9.675, P<0.05). Compared with the inferior turbinates, BAX and Caspase-3 expressions were increased whereas BCL-2 was decreased in NPs, and the differences were statistically significant (BAX 0.346±0.032 vs 0.302±0.037, Caspase-3 0.228±0.061 vs 0.158±0.065, BCL-2 0.090±0.047 vs 0.276±0.057, t value was 2.680, 2.361 and 7.575, respectively, all P<0.05). The expression levels of RUNX1 and apoptosis in pHNECs increased in a time-dependent manner after TNF-α exposure (P<0.05). Plasmid of sh-RUNX1-6 transfected silenced the expression of RUNX1 in pHNECs treated by TNF-α. After silencing RUNX1 in pHNECs apoptosis model, the protein levels of BAX and Caspase-3 were decreased, while the expression of BCL-2 was increased, the rate of apoptosis was decreased (P<0.05). Conclusions: RUNX1 is increased in NPs. Silencing RUNX1 can inhibit the apoptosis and reduce cell inflammatory damage of pHNECs induced by TNF-α.
Apoptosis
;
Core Binding Factor Alpha 2 Subunit/genetics*
;
Epithelial Cells
;
Humans
;
Nasal Polyps
;
Turbinates
8.Efficacy of internet-based integrated intervention on depression and anxiety symptoms in patients with COVID-19.
Ning WEI ; Bo-Chao HUANG ; Shao-Jia LU ; Jian-Bo HU ; Xiao-Yi ZHOU ; Chan-Chan HU ; Jing-Kai CHEN ; Jin-Wen HUANG ; Shu-Guang LI ; Zheng WANG ; Dan-Dan WANG ; Yi XU ; Shao-Hua HU
Journal of Zhejiang University. Science. B 2020;21(5):400-404
Public health crises, such as the outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) since Dec. 2019, are widely acknowledged as severe traumatic events that impose threats not only because of physical concerns but also because of the psychological distress of infected patients. We designed an internet-based integrated intervention and evaluated its efficacy on depression and anxiety symptoms in patients infected by SARS-CoV-2.
Adult
;
Anxiety
;
therapy
;
Betacoronavirus
;
Cell Phone
;
China
;
Coronavirus Infections
;
psychology
;
Depression
;
therapy
;
Female
;
Humans
;
Internet
;
Male
;
Middle Aged
;
Mindfulness
;
Pandemics
;
Pneumonia, Viral
;
psychology
;
Prospective Studies
;
Psychological Distress
;
Relaxation Therapy
;
Self Care
;
methods
9. Preliminary study of the relationship between novel coronavirus pneumonia and liver function damage: a multicenter study
Chuan LIU ; Zicheng JIANG ; Chuxiao SHAO ; Hongguang ZHANG ; Hongmei YUE ; Zhenhuai CHEN ; Baoyi MA ; Weiying LIU ; Huihong HUANG ; Jie YANG ; Yan WANG ; Hongyan LIU ; Dan XU ; Jitao WANG ; Junyan YANG ; Hongqiu PAN ; Shengqiang ZOU ; Fujian LI ; Junqiang LEI ; Xun LI ; Qing HE ; Ye GU ; Xiaolong QI
Chinese Journal of Hepatology 2020;28(2):148-152
Objective:
To analyze the clinical characteristics of cases of novel coronavirus pneumonia and a preliminary study to explore the relationship between different clinical classification and liver damage.
Methods:
Consecutively confirmed novel coronavirus infection cases admitted to seven designated hospitals during January 23, 2020 to February 8, 2020 were included. Clinical classification (mild, moderate, severe, and critical) was carried out according to the diagnosis and treatment program of novel coronavirus pneumonia (Trial Fifth Edition) issued by the National Health Commission. The research data were analyzed using SPSS19.0 statistical software. Quantitative data were expressed as median (interquartile range), and qualitative data were expressed as frequency and rate.
Results:
32 confirmed cases that met the inclusion criteria were included. 28 cases were of mild or moderate type (87.50%), and four cases (12.50%) of severe or critical type. Four cases (12.5%) were combined with one underlying disease (bronchial asthma, coronary heart disease, malignant tumor, chronic kidney disease), and one case (3.13%) was simultaneously combined with high blood pressure and malignant tumor. The results of laboratory examination showed that the alanine aminotransferase (ALT), aspartate aminotransferase (AST), albumin (ALB), and total bilirubin (TBil) for entire cohort were 26.98 (16.88 ~ 46.09) U/L and 24.75 (18.71 ~ 31.79) U/L, 39.00 (36.20 ~ 44.20) g/L and 16.40 (11.34- ~ 21.15) mmol/L, respectively. ALT, AST, ALB and TBil of the mild or moderate subgroups were 22.75 (16.31- ~ 37.25) U/L, 23.63 (18.71 ~ 26.50) U/L, 39.70 (36.50 ~ 46.10) g/L, and 15.95 (11.34 ~ 20.83) mmol/L, respectively. ALT, AST, ALB and TBil of the severe or critical subgroups were 60.25 (40.88 ~ 68.90) U/L, 37.00 (20.88 ~ 64.45) U/L, 35.75 (28.68 ~ 42.00) g/L, and 20.50 (11.28 ~ 25.00) mmol/L, respectively.
Conclusion
The results of this multicenter retrospective study suggests that novel coronavirus pneumonia combined with liver damage is more likely to be caused by adverse drug reactions and systemic inflammation in severe patients receiving medical treatment. Therefore, liver function monitoring and evaluation should be strengthened during the treatment of such patients.
10.Distribution of Microbiota in Fine Particulate Matter Particles in Guangzhou, China.
Shi Rui DONG ; Ya Jing HAN ; Jing WU ; Cheng Li ZENG ; Ke Hui ZHU ; Xiao Jing CHEN ; Yu Mei LIU ; Xiao Qian ZOU ; Shao Ling ZHENG ; Zi Hao WEN ; Dan Dan LIU ; Yao WANG ; Xiu Xia HUANG ; Xiu Ben DU ; Jian Lei HAO ; Huan Yu WANG ; Shu GUO ; Chun Xia JING ; Guang YANG
Biomedical and Environmental Sciences 2020;33(5):306-314
Objective:
High PM concentration is the main feature of increasing haze in developing states, but information on its microbial composition remains very limited. This study aimed to determine the composition of microbiota in PM in Guangzhou, a city located in the tropics in China.
Methods:
In Guangzhou, from March 5 to 10 , 2016, PM was collected in middle volume air samplers for 23 h daily. The 16S rDNA V4 region of the PM sample extracted DNA was investigated using high-throughput sequence.
Results:
Among the Guangzhou samples, , , , , and were the dominant microbiota accounting for more than 90% of the total microbiota, and was the dominant gram-negative bacteria, accounting for 21.30%-23.57%. We examined the difference in bacterial distribution of PM between Beijing and Guangzhou at the genus level; was found in both studies, but was only detected in Guangzhou.
Conclusion
In conclusion, the diversity and specificity of microbial components in Guangzhou PM were studied, which may provide a basis for future pathogenicity research in the tropics.
Air Microbiology
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Air Pollutants
;
analysis
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Bacteria
;
classification
;
isolation & purification
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China
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Cities
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Environmental Monitoring
;
Microbiota
;
Particle Size
;
Particulate Matter
;
analysis
;
RNA, Bacterial
;
analysis
;
RNA, Ribosomal, 16S
;
analysis

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