1.Association between incidence of hand-foot-mouth disease and meteorological factors
YANG Ya ; FEI Jie ; YANG Yiwei ; ZHANG Bing ; ZHANG Qian ; LU Yihan
Journal of Preventive Medicine 2025;37(4):346-349,355
Objective:
To examine the association between incidence of hand-foot-mouth disease (HFMD) and meteorological factors, so as to provide the basis for the prevention and control of HFMD.
Methods:
The number of HFMD cases in Jiading District, Shanghai Municipality from 2016 to 2023 were collected through the Chinese Disease Prevention and Control Information System, and meteorological data were obtained from the Shanghai Meteorological Bureau. The associations of daily average temperature, daily average relative humidity, and daily average atmospheric pressure with the daily number of HFMD cases were analyzed using a distributed lag non-linear model (DLNM).
Results:
A total of 21 555 HFMD cases were reported in Jiading District from 2016 to 2023, with an average annual incidence of 132.57/100 000. There were 12 762 male cases (59.21%) and 8 793 female cases (40.79%). The main peak of incidence occurred from June to August, and the secondary peak was from October to December. DLNM analysis showed that the incidence risk of HFMD first increased and then decreased with the increase of daily average temperature, and first decreased and then increased with the prolongation of the lag time. The cumulative lag risk was higher when the daily average temperature ranged from 18.4 to 35.1 ℃, and the maximum cumulative lag effect was observed at 27.8 ℃ (RR=5.522, 95%CI: 4.751-6.370). The incidence risk of HFMD first increased and then decreased with the increase of daily average relative humidity, and first decreased, then increased and then decreased again with the prolongation of the lag time. The cumulative lag risk was higher when the daily average relative humidity ranged from 71.7% and 90.8%, and the maximum cumulative lag effect was observed at 81.8% (RR=1.603, 95%CI: 1.321-1.995). The incidence risk of HFMD decreased with the increase of daily average atmospheric pressure, and decreased with the prolongation of the lag time when the daily average atmospheric pressure was greater than 1 015.80 hPa. When the daily average atmospheric pressure was less than 1 015.80 hPa, the incidence risk of HFMD increased with the prolongation of the lag time. The maximum cumulative lag effect was observed at 986.80 hPa (RR=8.513, 95%CI: 1.401-36.625).
Conclusion
The incidence risk of HFMD in Jiading District initially increases and then decreases with increasing temperature and relative humidity, while it decreases with increasing atmospheric pressure, and these effects exhibit a lagged response.
2.Treatment of Laryngopharyngeal Reflux Disease from the Perspective of Ascending and Descending of Qi
Yihan SHANG ; Yanping ZHANG ; Ronggang YANG ; Luping HE ; Lu XYU
Journal of Traditional Chinese Medicine 2024;65(16):1717-1720
This article explored the treatment of laryngopharyngeal reflux disease (LPRD) from the perspective of ascending and descending of qi. It is believed that the disorder of qi movement of the middle jiao (焦) is the key to the pathogenesis of LPRD. The ascending and descending disorder of liver and lung is an important factor in its prolongation and progression. The treatment of LPRD should follow the nature of the spleen and stomach, with the focus on fortifying and transporting the spleen and the stomach, supplemented by soothing the liver and diffusing the lung. The herbs such as Cangzhu (Rhizoma Atractylodis), Fuling (Poria), Yiyiren (Semen Coicis), Gegen (Radix Puerariae Lobatae) and Shanyao (Rhizoma Dioscoreae) could be used for fortifying and circuiting the center earth, and Chaihu (Radix Bupleuri), Muxiang (Radix Aucklandiae), Zhiqiao (Fructus Aurantii) and Baishao (Radix Paeoniae Alba) for soothing the liver and nourishing the blood to harmonize the ascending and descending. Jiegeng (Radix Platycodonis) and Xuanfuhua (Japanese Inula Flower) are supplemented to diffuse and direct lung qi downward thereby mediating the center jiao. In this way, the qi movement of the spleen and stomach is restored, and the ascending and descending between the liver and lung are harmonized, and therefore the disease is cureda.
3.Evaluation of the measles surveillance system performance in Jiading District, Shanghai from 2020 to 2022
Qian ZHANG ; Ya YANG ; Jie FEI ; Peisong ZHONG ; Yihan LU
Shanghai Journal of Preventive Medicine 2024;36(1):36-39
ObjectiveTo evaluate the measles surveillance system (MSS) in Jiading District, Shanghai from 2020 to 2022, and to provide evidence for the elimination of measles. MethodsDescriptive methods were used to analyze the MSS data and confirmed measles cases from 2020 to 2022 and to evaluate MSS performance indicators. ResultsA total of 120 suspected cases were reported through the MSS from 2020 to 2022, of which 12 were classified as measles, 9 as rubella, and 99 as non-measles /rubella. The incidence of reported non-measles /rubella was 1.44 per 100 000 population in 2020, 2.01 per 100 000 population in 2021, and 1.99 per 100 000 population in 2022. The rates of complete investigation within 48 hours, blood samples and etiology collection, timely delivery, and timely reporting were all 100%. Among the 12 confirmed measles cases from 2020 to 2022, seven routine immunization subjects completed the required doses of measles vaccines, while two out five adult cases had a history of measles vaccine-related immunization. The confirmed cases comprised six with fever accompanied by rash, five with rash alone, and one with fever alone. ConclusionThe MSS results in Jiading District, Shanghai are overall satisfactory. However, there is a need to improve sensitivity, especially in detecting and reporting cases with atypical symptoms. It is imperative to maintain high vaccination coverage for age-appropriate children, promote supplementary immunization activities, and elevate the overall immunity of the entire population.
4.Quality Evaluation of Atractylodis Macrocephalae Rhizoma in Different Production Methods Based on Traditional Traits
Jinxiu QIAN ; Yihan WANG ; Yapeng WANG ; Guoliang YU ; Qiuxiang PAN ; Jiawei SHI ; Meiping CHEN ; Yangqing LIU ; Lun LU ; Yanmeng LIU ; Tiegui NAN ; Liping KANG ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(1):43-52
ObjectiveBased on the experience of traditional quality evaluation, the quality of Atractylodis Macrocephalae Rhizoma(AMR) with different production methods such as direct seeding, transplanting after seedling raising, topping and non-topping, and difference in growth years was compared. MethodVernier caliper was used to measure the trait data of AMR in different production methods. Paraffin sections of AMR with different production methods were made by saffron solid green staining, and the microstructure was observed. The contents of water-soluble and alcohol-soluble extracts in AMR with different production methods were determined according to the 2020 edition of Chinese Pharmacopoeia. The content of water-soluble total polysaccharides in AMR with different production methods was detected by sulfuric acid-anthrone method. Fiber analyzer was used to detect the content of fiber components in AMR with different production methods. The contents of monosaccharides, oligosaccharides and some secondary metabolites in AMR with different production methods were detected by ultra performance liquid chromatography(UPLC), and the differences of chemical components were compared by multivariate statistical analysis methods such as principal component analysis(PCA) and partial least squares-discriminant analysis(PLS-DA). ResultIn terms of traits, the 3-year-old AMR with direct seeding and without topping was close to the high-quality AMR with "phoenix-head and crane-neck, strong sweetness and clear aroma" recorded in ancient materia medica, followed by the 3-year-old AMR with topping after transplanting, while the 2-year-old AMR with topping after transplanting with high market circulation rate was generally fat and strong with mild odor. In the microscopic aspect, the arrangement of xylem vessels and fiber bundles in the 3-year-old samples formed two obvious rings. Compared with the 2-year-old samples cultivated in Bozhou and Zhejiang, the 3-year-old samples without topping after transplanting had more wood fibers. In terms of chemical composition, the contents of 70% ethanol extract, fructose, glucose, sucrose, 1-kestose, atractylenolide Ⅰ, chlorogenic acid, neochlorogenic acid, cryptochlorogenic acid and other components in 3-year-old AMR with direct seeding and without topping were significantly higher than those in the other three samples(P<0.05). The contents of cellulose, 70% ethanol extract, sucrose, atractylenolide Ⅰ, atractylone and other components in 3-year-old AMR with topping after transplanting were significantly higher than those in the 2-year-old AMR with high market circulation rate(P<0.05), while the contents of water-soluble extract and water-soluble total polysaccharides in 2-year-old samples with topping after transplanting were significantly higher than those in the 3-year-old AMR with topping after transplanting, direct seeding and without topping(P<0.05). ConclusionUnder the current mainstream production mode, too much manual intervention makes AMR heavily enriched in polysaccharides and increased the yield, but the accumulation of sweet substances, fragrant substances and fiber substances is insufficient, which affects its quality. The current quality standard of AMR has some shortcomings in guiding the high quality production of it, it is suggested to revise the quality standard of AMR, supplement the quantitative analysis of secondary metabolites, and strengthen the production of imitation wild AMR.
5.Influencing factors of urinary infection after radical cystectomy in elderly patients with bladder cancer
Juan CHEN ; Yihan WANG ; Ye TANG ; Dan ZHAO ; Lu WANG ; Ziming WANG
Chinese Journal of Postgraduates of Medicine 2024;47(9):791-796
Objective:To analyze the influencing factors of urinary infection after radical cystectomy in elderly patients with bladder cancer.Methods:A retrospective study was conducted to collect the clinical data of 56 elderly patients with bladder cancer who developed urinary infection after radical cystectomy in the Second Affiliated Hospital of Xi′an Jiaotong University from March 2020 to February 2023. All patients were included in the case group. A total of 168 patients without urinary infection after radical cystectomy were collected at a ratio of 1∶3 into the control group. Baseline data and perioperative data were collected, and Logistic regression was used to analyze the influencing factors of urinary infection after radical cystectomy in elderly patients with bladder cancer.Results:Single factor analysis showed that the diabetes proportion, hydronephrosis proportion, nutrition risk proportion, inhalation anesthesia proportion, senile weakness proportion, stress hyperglycemia proportion, albumin (ALB) <35 g/L proportion and urine bag replacement time in the case group were significantly higher than those in the control group: 66.07% (37/56) vs. 44.64% (75/168), 69.64% (39/56) vs. 46.43% (78/168), 66.07% (37/56) vs. 41.67% (70/168), 73.21% (41/56) vs. 48.81% (82/168), 55.36% (31/56) vs. 35.12% (59/168), 41.07% (23/56) vs. 20.24% (34/168), 55.36% (31/56) vs. 36.90% (62/168), (7.52 ± 1.65) d vs. (6.62 ± 1.44) d, and there were statistical differences ( P<0.05). Logistic regression analysis showed that nutrition risk, inhalation anesthesia, stress hyperglycemia and senile weakness were independent factors of urinary infection after radical cystectomy in elderly patients with bladder cancer ( P<0.05). Conclusions:Urinary infection after radical cystectomy in the elderly patients with bladder cancer is closely related to nutritional risk, inhalation anesthesia, stress hyperglycemia and senile weakness. Attention to the above factors and symptomatic intervention are important for prevention and treatment of urinary infection.
6.Comparison of postgraduate global health courses in the context of China participating in global health governance
Baichu GUAN ; Hui GE ; Yihan LU
Chinese Journal of Medical Education Research 2023;22(11):1601-1605
As China is actively participating in global health governance in multiple dimensions at multiple levels, Chinese education on global health requires optimizing the curriculum system, strengthening the discipline construction, and improving students' literacy of global health. This study compared two postgraduate courses on global health, Global Health Study: Principles and Practice and Global Health Leadership in Practice, in terms of teaching objectives, course contents, teaching methods, and teaching evaluation. We analyzed the advantages and limitations in the current global heath curriculum, and explored course construction and improvement. We hope to provide a reference for improving the curriculum, teaching, and talent cultivation in the field of global health.
7.Impact of inclusion of varicella vaccine into the immunization program on the incidence of varicella
Fangmin LIU ; Liming SHI ; Ye YAO ; Xiaodong SUN ; Zhi LI ; Yihan LU ; Liping ZHANG ; Jia LU
Shanghai Journal of Preventive Medicine 2023;35(7):634-638
ObjectiveTo analyze the epidemiological characteristics of varicella in Minhang District, Shanghai from 2013 to 2022, and to evaluate the impact of adjusting the varicella vaccination program to a two-dose regimen and its inclusion in the Shanghai immunization program on the incidence of varicella. MethodsData on reported varicella cases from 2013 to 2022 in Minhang District were collected. Interrupted time series analysis and segmented regression models were used to analyze the changes in varicella incidence before and after the adjustment of varicella immunization strategies. ResultsFrom 2013 to 2022, the average annual incidence of varicella was 76.58/100 000, with the highest incidence in 2017 (119.21/100 000) and the lowest in 2022 (27.02/100 000). The varicella incidence exhibited seasonal patterns with peaks occurring from March to June and October to January of the following year. Prior to the adjustment of varicella immunization strategies (2013‒2017), the varicella incidence showed an upward trend (z=2.20, P=0.03), while after the adjustment (2018‒2022), a adownward trend was observed (2018‒2022) (z=-2.25, P=0.02). Interrupted time series analysis showed that following the adjustment of varicella immunization strategies, an immediate change of -33.91/100 000 (t=-4.35, P<0.001) in varicella incidence was observed, and the incidence slope was -17.59/100 000 with a decline of 28.61/100 000 (t=-12.16, P<0.001) compared to before inclusion. ConclusionThe incidence of varicella in Minhang District, Shanghai from 2013 to 2022 exhibits distinct seasonal patterns. After adjusting the varicella vaccination program to a two-dose regimen and incorporating it into the immunization program, the second dose of varicella vaccine administration substantially increases. As a result, the rising trend of varicella incidence is effectively controlled, and the incidence level decreases significantly, showing a sustained downward trend.
8.Significance of jellyfish sign in predicting adverse perinatal outcomes of complete placenta previa combined with placenta accreta spectrum disorders
Yufei HAN ; Ziyan JIANG ; Shiyun HUANG ; Qing ZUO ; Yihan LU ; Xinxin ZHU ; Yue SUN ; Runrun FENG ; Minmin HAN ; Lizhou SUN ; Li CHEN ; Zhiping GE
Chinese Journal of Perinatal Medicine 2023;26(8):644-649
Objective:To explore the value of jellyfish sign, an abnormal ultrasonographic sign, in predicting adverse perinatal outcomes of women with complete placenta previa combined with placenta accreta spectrum disorders (PAS).Methods:This retrospective study analyzed the ultrasound images of 72 singleton gravidas, diagnosed with complete placenta previa combined with PAS, who underwent cesarean section at the First Affiliated Hospital of Nanjing Medical University between January 2020 and February 2023. Based on the presence and absence of the jellyfish sign in ultrasound images, these gravidas were divided into the jellyfish-sign group (15 cases, 20.8%) and the non-jellyfish-sign group (57 cases, 79.2%). The clinical data and perinatal outcomes of the two groups were analyzed. The adverse perinatal outcomes encompassed conditions such as abdominal aorta balloon block, uterine artery embolism, hysterectomy, postpartum hemorrhage, and neonatal intensive care unit (NICU) admission of their neonates. Statistical analysis was performed using two independent samples t-test, the Mann-Whitney U test and the Chi-square (or Fisher's exact) test. Results:(1) The jellyfish-sign group exhibited a higher parity [(1.6±0.7) times vs (1.2±0.6) times, t=2.01] and higher prenatal scores of placenta accreta [(12.3±1.5) scores vs (8.6±2.9) scores, t=6.59] than those in the non-jellyfish-sign group (both P<0.05). Among the 57 cases in the non-jellyfish-sign group, there were 14 cases of placenta creta (24.6%), 40 cases of placenta increta (70.2%), and three cases of placenta percreta (5.3%). Among the 15 cases in the jellyfish-sign group, nine cases were diagnosed with placenta increta, six with placenta percreta, and none with placenta creta. The difference in distribution between the two groups was statistically significant (Fisher's exact test, P<0.001). (2) Intraoperative blood loss [(for those who accepted abdominal aorta balloon block, 1 973±1 057) ml vs (1 211±576) ml, t=2.55], red blood cells transfused [4.0 U (2.0-23.0 U) vs 2.5 U (0.0-11.0 U), Z=-2.53], postoperative hospitalization time [(9.7±2.4) vs (7.5±2.2) d, t=3.36], the incidence of abdominal aorta balloon block [15/15 vs 38.6% (22/57), χ2=17.92], uterine artery embolism [for those who accepted abdominal aorta balloon block, 3/15 vs 1.8% (1/57), Fisher's exact test], and requiring blood transfusion [15/15 vs 63.2% (36/57), Fisher's exact test] were higher in the jellyfish-sign group than those in the non-jellyfish-sign group. However, the non-jellyfish-sign group had lower gestational age at delivery [(33.6±1.5) weeks vs (35.2±1.8) weeks, t=-3.24], and lower neonatal Apgar score at 1 min and 5 min [1 min: 8 scores (3-10 scores) vs 9 scores (4-10 scores), Z=-2.46; 5 min: 9 scores (7-10 scores) vs 10 scores (6-10 scores), Z=-2.02] (all P<0.05). There were no significant differences in emergency surgery rate, 24 h postoperative blood loss, neonatal birth weight, and proportion of NICU admission between the two groups. Additionally, no cases of hysterectomy or death were observed in the two groups. Conclusions:Ultrasound examination revealing jellyfish signs in patients with complete placenta previa and PAS is associated with an increased likelihood of adverse perinatal outcomes. Consequently, the management of these patients should be given greater attention.
9.Study on p-Hydroxybenzoic Acid on Rheumatoid Arthritis Via Inhibiting NF-κB/caspase-1 Signaling Pathway
MA Yihan ; WEI Chengqiong ; XU Xiaotian ; LU Xi ; WANG Yuhui ; DUAN Xiaoqun
Chinese Journal of Modern Applied Pharmacy 2023;40(18):2519-2525
OBJECTIVE To investigate the therapeutic effect of natural phenolic compound p-hydroxybenzoic acid(HA) on adjuvant arthritis(AA) induced by the complete Freund's adjuvant(CFA), and to clarify the mechanism of HA preliminary. METHODS Apart from the normal group, all rats received 0.1 mL CFA by plantar subcutaneous injection to induce AA rats model. And rats with AA were randomized to the model group, the low-, medium-, and high-dose HA group(2.5, 5, and 10 mg·kg-1, respectively), the positive control group(indomethacine, 5 mg·kg-1). The rats in each group were orally treated with the corresponding drugs for therapeutic intervention. The volume and leg thickness of the rats in each group were recorded and an inflated articular score was obtained. Inflammation cytokine expression(TNF-α, IL-1β and IL-6) was determined by ELISA and qPCR. Radiographs and HE staining were used to observe histopathological and pathological changes in the foot. The expressions of caspase-1 and NF-κB were examined in Western blotting. RESULTS HA could significantly alleviate joint swelling in AA rat(P<0.05), inhibited the production of inflammatory factors(TNF-α, IL-1β and IL-6) from protein and mRNA levels(P<0.05), and decreased the expression levels of caspase-1 and NF-κB at protein level(P<0.05). HA alleviated ankle injury in rats by X-ray examination, and HE staining showed that HA could significantly inhibit the infiltration of inflammatory cells and the destruction of cartilage surface(P<0.05), and these results were dose-dependent. CONCLUSION HA may relieve rheumatoid arthritis by inhibiting the NF-κB/casepase-1 signaling pathway.
10.Analysis of carcinogenic virus infection in HIV-infected patients
Yong ZHANG ; Xin XIN ; Tao WANG ; Ping’an WU ; Jing CHEN ; Yihan LU
Shanghai Journal of Preventive Medicine 2022;34(3):193-196
Objective To investigate the status of carcinogenic infection in people infected with HIV and those with negative HIV test results in VCT clinics. To analyze the epidemiological characteristics and provide scientific basis for more targeted disease prevention and control strategies. Methods The serum levels of Epstein-Barr virus (EBV), human herpesvirus type 8 (HHV-8) and human T-lymphotropic virus type Ⅰ (HTLV-Ⅰ) antibodies were detected by ELISA method in 224 HIV-infected patients and 480 HIV-negative visitors treated in VCT clinics during the same period from 2014 to 2017, to compare the differences in the infection rates of this virus between HIV-infected and HIV-negative individuals and to systematically analyze the correlation between viral infections and high-risk sexual behavior. Results Among the 224 HIV-infected patients, 79 were positive for EBV antibody, with the infection rate of 35.27%; 151 were positive for HHV-8 antibody, with the infection rate of 67.41%; and 95 were positive for HTLV-Ⅰ, with the infection rate of 42.41%. A total of 480 HIV negative visitors were tested. 7 patients were positive for EBV antibody, with the infection rate of 1.46%. 26 patients were infected with positive HHV-8 antibody, with the infection rate of 5.41%. 9 patients had positive HTIV-Ⅰ antibody, with the infection rate of 1.86%. The infection rates of the three carcinogenic viruses in HIV-infected patients were all higher than those in HIV-negative groups, and the differences were statistically significant ( P <0.05). Conclusion There is a high prevalence of three highly carcinogenic viruses in HIV-infected patients and serious co-infection. It is necessary to improve the education of safe sex among HIV-infected patients and people with high risk of infection in order to curb the epidemic of HIV and other infectious diseases.


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