1.Comparison of external morphological characteristics and movement patterns between Schistosoma japonicum and S. sinensis cercariae
Jing SONG ; Zongya ZHANG ; Meifen SHEN ; Jihua ZHOU ; Chunying LI ; Zaogai YANG ; Yi DONG ; Chunhong DU
Chinese Journal of Schistosomiasis Control 2024;36(4):384-387
Objective To compare the external morphological characteristics and movement patterns between Schistosoma japonicum and S. sinensis cercariae. Methods S. japonicum and S. sinensis cercariae were heat-fixed, and well-extended cercariae, of 50 each species, were randomly selected for measurement of body length, body width, tail stem length, and tail fork length. The external morphological characteristics of S. japonicum and S. sinensis cercariae were compared. In addition, S. japonicum-infected Oncomelania snails and S. sinensis-infected Tricula snails were observed under a microscope and the movement patterns of S. japonicum and S. sinensis cercariae were compared. Results The mean body length, body width, tail stem length, and tail fork length were (0.16 ± 0.01), (0.05 ± 0.01), (0.14 ± 0.01) mm and (0.06 ± 0.01) mm for S. japonicum cercariae, and (0.13 ± 0.01), (0.05 ± 0.01), (0.13 ± 0.01) mm and (0.06 ± 0.01) mm for S. sinensis cercariae, respectively, and there were significant differences in terms of cercaria body length (t = 14.583, P < 0.05) and tail stem length (t = 3.861, P < 0.05), while no significant differences were seen in terms of body width (t = 0.896, P > 0.05) or tail fork length (t = −0.454, P > 0.05). Microscopy revealed that the tails of both S. japonicum and S. sinensis cercariae swung from side to side and there was no significant difference in their movement pattern. Conclusion S. sinensis and S. japonicum cercariae share highly similar external external morphological characteristics and movement patterns.
2.Progress of interruption of schistosomiasis transmission and prospects in Yunnan Province
Yun ZHANG ; Lifang WANG ; Xiguang FENG ; Mingshou WU ; Meifen SHEN ; Hua JIANG ; Jing SONG ; Jiayu SUN ; Chunqiong CHEN ; Jiaqi YAN ; Zongya ZHANG ; Jihua ZHOU ; Yi DONG ; Chunhong DU
Chinese Journal of Schistosomiasis Control 2024;36(4):422-427
Schistosomiasis was once hyper-endemic in Yunnan Province. Following concerted efforts for over 70 years, remarkable achievements have been made for schistosomiasis control in the province. In 2004, the Mid- and Long-term Plan for Schistosomiasis Prevention and Control in Yunnan Province was initiated in Yunnan Province, and the target for transmission control of schistosomiasis was achieved in the province in 2009. Following the subsequent implementation of the Outline for Key Projects in Integrated Schistosomiasis Control Program (2009—2015) and the 13th Five - year Plan for Schistosomiasis Control in Yunnan Province, no acute schistosomiasis had been identified in Yunnan Province for successive 12 years, and no local Schistosoma japonicum infections had been detected in humans, animals or Oncomelania hupensis snails for successive 6 years in the province by the end of 2020. The transmission of schistosomiasis was interrupted in Yunnan Province in 2020. This review summarizes the history of schistosomiasis, changes in schistosomiasis prevalence and progress of schistosomiasis control in Yunnan Province, and proposes the future priorities for schistosomiasis control in the province.
3.Factors affecting differentiation between Oncomelania hupensis and Tricula snails among schistosomiasis control professionals in Yunnan Province
Xiao CUI ; Jing SONG ; Chunying LI ; Hongqiong WANG ; Chunhong DU ; Meifen SHEN ; Zaogai YANG ; Xinping SHI ; Shizhu LI ; Yi DONG
Chinese Journal of Schistosomiasis Control 2024;36(5):514-520
Objective To investigate the capability for distinguishing between the morphology of Oncomelania hupensis and Tricula snails and its influencing factors among schistosomiasis control professionals in Yunnan Province, so as to evaluate the interference of Tricula snails with O. hupensis surveys. Methods O. hupensis and Tricula snails were sampled from 9 schistosomiasis-endemic counties (districts) in Yunnan Province. The capability for distinguishing between O. hupensis and Tricula snails was evaluated using online questionnaire surveys and field blind tests among schistosomiasis control professionals, and the proportions of correct judgment, misjudgment and missed judgment were calculated. Univariate and multivariate logistic regression models were created using the software SPSS 25.0, and factors affecting the proportion of correct judgments of O. hupensis snails were identified among schistosomiasis control professionals. Results Questionnaire surveys and field blind tests showed that the overall proportions of correct judgments of O. hupensis snails were 56.77% (2 305/4 060) and 68.28% (1 556/2 279) among schistosomiasis control professionals in Yunnan Province, respectively. Univariate logistic regression analysis of online questionnaire surveys identified gender [odds ratio (OR) = 1.244, 95% confidential interval (CI): (1.073, 1.441), P < 0.05], professional title [OR = 0.628, 1.741, 95% CI: (0.453, 0.871), (1.109, 2.734), both P < 0.05], working duration [OR = 0.979, 95% CI: (0.971, 0.987), P < 0.05] and classification of schistosomiasis epidemics in endemic foci [OR = 1.410, 0.293, 0.523, 95% CI: (1.103, 1.804), (0.237, 0.361), (0.416, 0.657), all P < 0.05] as factors affecting the proportion of correct judgments of O. hupensis snails among schistosomiasis control professionals in Yunnan Province, and multivariate logistic regression analysis after adjustments showed that the proportion of O. hupensis snail misjudgments was 1.179 times higher among male schistosomiasis control professionals than among females [OR = 1.179, 95% CI: (1.006, 1.382), P < 0.05], and 1.474 times higher among schistosomiasis control professionals in schistosomiasis-elimination areas with snails than in areas without snails [OR = 1.474, 95% CI: (1.145, 1.898), P < 0.05], and the proportions of missed judgments of O. hupensis snails were 0.284 [OR = 0.284, 95% CI: (0.225, 0.359), P < 0.05] and 0.523 times [OR = 0.523, 95% CI: (0.412, 0.664), P < 0.05] higher among schistosomiasis control professionals in transmission-interruption areas with snails and schistosomiasis-elimination areas with snails than in schistosomiasis-elimination areas without snails. Univariate logistic regression analysis of field blind tests showed age [OR = 2.381, 95% CI: (1.677, 3.381), P < 0.05], professional title [OR = 1.688, 95% CI: (1.103, 2.582), P < 0.05], working duration [OR = 0.970, 95% CI: (0.956, 0.984), P < 0.05] and classification of schistosomiasis epidemics in endemic foci [OR = 0.262, 0.593, 95% CI: (0.188, 0.364), (0.420, 0.837), both P < 0.05] as factors affecting the proportion of correct judgments of O. hupensis snails among schistosomiasis control professionals in Yunnan Province, and multivariate logistic regression analysis after adjustments showed the proportions of missed judgments of O. hupensis snails were 0.263 [OR = 0.263, 95% CI: (0.176, 0.394), P < 0.05] and 0.604 times [OR = 0.604, 95% CI: (0.416, 0.875), P < 0.05] higher among schistosomiasis control professionals in transmission-interruption areas with snails and schistosomiasis-elimination areas with snails than in schistosomiasis-elimination areas without snails. Conclusions Schistosomiasis control professionals in Yunnan Province have a low accuracy rate for distinguishing between the morphology of O. hupensis and Tricula snails, and gender and classification of schistosomiasis epidemics in endemic foci are factors that affect their ability to distinguish. The presence of Tricula snails causes a high degree of interference with O. hupensis surveys in O. hupensis snail-infested areas of Yunnan Province. Reinforced training for distinguishing between O. hupensis and Tricula snails is required among schistosomiasis control professionals in Yunnan Province.
4.Prediction of potential geographic distribution of Oncomelania hupensis in Yunnan Province using random forest and maximum entropy models
Zongya ZHANG ; Chunhong DU ; Yun ZHANG ; Hongqiong WANG ; Jing SONG ; Jihua ZHOU ; Lifang WANG ; Jiayu SUN ; Meifen SHEN ; Chunqiong CHEN ; Hua JIANG ; Jiaqi YAN ; Xiguang FENG ; Wenya WANG ; Peijun QIAN ; Jingbo XUE ; Shizhu LI ; Yi DONG
Chinese Journal of Schistosomiasis Control 2024;36(6):562-571
Objective To predict the potential geographic distribution of Oncomelania hupensis in Yunnan Province using random forest (RF) and maximum entropy (MaxEnt) models, so as to provide insights into O. hupensis surveillance and control in Yunnan Province. Methods The O. hupensis snail survey data in Yunnan Province from 2015 to 2016 were collected and converted into O. hupensis snail distribution site data. Data of 22 environmental variables in Yunnan Province were collected, including twelve climate variables (annual potential evapotranspiration, annual mean ground surface temperature, annual precipitation, annual mean air pressure, annual mean relative humidity, annual sunshine duration, annual mean air temperature, annual mean wind speed, ≥ 0 ℃ annual accumulated temperature, ≥ 10 ℃ annual accumulated temperature, aridity and index of moisture), eight geographical variables (normalized difference vegetation index, landform type, land use type, altitude, soil type, soil textureclay content, soil texture-sand content and soil texture-silt content) and two population and economic variables (gross domestic product and population). Variables were screened with Pearson correlation test and variance inflation factor (VIF) test. The RF and MaxEnt models and the ensemble model were created using the biomod2 package of the software R 4.2.1, and the potential distribution of O. hupensis snails after 2016 was predicted in Yunnan Province. The predictive effects of models were evaluated through cross-validation and independent tests, and the area under the receiver operating characteristic curve (AUC), true skill statistics (TSS) and Kappa statistics were used for model evaluation. In addition, the importance of environmental variables was analyzed, the contribution of environmental variables output by the models with AUC values of > 0.950 and TSS values of > 0.850 were selected for normalization processing, and the importance percentage of environmental variables was obtained to analyze the importance of environmental variables. Results Data of 148 O. hupensis snail distribution sites and 15 environmental variables were included in training sets of RF and MaxEnt models, and both RF and MaxEnt models had high predictive performance, with both mean AUC values of > 0.900 and all mean TSS values and Kappa values of > 0.800, and significant differences in the AUC (t = 19.862, P < 0.05), TSS (t = 10.140, P < 0.05) and Kappa values (t = 10.237, P < 0.05) between two models. The AUC, TSS and Kappa values of the ensemble model were 0.996, 0.954 and 0.920, respectively. Independent data verification showed that the AUC, TSS and Kappa values of the RF model and the ensemble model were all 1, which still showed high performance in unknown data modeling, and the MaxEnt model showed poor performance, with TSS and Kappa values of 0 for 24%(24/100) of the modeling results. The modeling results of 79 RF models, 38 MaxEnt models and their ensemble models with AUC values of > 0.950 and TSS values of > 0.850 were included in the evaluation of importance of environmental variables. The importance of annual sunshine duration (SSD) was 32.989%, 37.847% and 46.315% in the RF model, the MaxEnt model and their ensemble model, while the importance of annual mean relative humidity (RHU) was 30.947%, 15.921% and 28.121%, respectively. Important environment variables were concentrated in modeling results of the RF model, dispersed in modeling results of the MaxEnt model, and most concentrated in modeling results of the ensemble model. The potential distribution of O. hupensis snails after 2016 was predicted to be relatively concentrated in Yunnan Province by the RF model and relatively large by the MaxEnt model, and the distribution of O. hupensis snails predicted by the ensemble model was mostly the joint distribution of O. hupensis snails predicted by RF and MaxEnt models. Conclusions Both RF and MaxEnt models are effective to predict the potential distribution of O. hupensis snails in Yunnan Province, which facilitates targeted O. hupensis snail control.
5.Effect of citric acid-induced cough on swallowing function and serum substance P levels in stroke patients with early tracheotomy
Yijie ZHANG ; Binbin MEI ; Meifen SHEN ; Haiying ZHANG ; Feifei CUI
Chinese Journal of Practical Nursing 2022;38(3):161-165
Objective:To investigate the effect of citric acid-induced cough on swallowing function and serum substance P in stroke patients with early tracheotomy.Methods:Forty-nine post-stroke tracheotomy patients admitted to the Department of Neurosurgery at the First Affiliated Hospital of Soochow University from January 2018 to July 2019 were selected as study subjects. They were divided into intervention group ( n=24) and control group ( n=25) using the random digit table. The control group was subjected to routine nursing, while the intervention group was given citric acid to induce cough based on routine care. The intervention time was 1 week. The swallowing function and serum substance P levels were compared between the two groups before and after the intervention. Results:After the intervention, 45.8% (11/24) of the patients in the intervention group were assessed as having "strong" swallowing function, compared to 28.0% (7/25) in the control group, with a statistically significant difference in swallowing function between the two groups ( Z= -2.22, P<0.05), and the level of substance P in the intervention group was (283.40 ± 134.82) ng/L, significantly higher than that of the control group (203.59 ± 126.16) ng/L ( t=2.14, P<0.05). Conclusions:Citric acid-induced cough helped stroke patients with early tracheotomy to produce effective swallowing action and up-regulate substance P in serum to promote recovery of swallowing function.
6.Chinese version of the Anterior Skull Base Nasal Inventory-12 and its reliability and validity
Chen MA ; Meifen SHEN ; Chenxi LI ; Yijie ZHANG ; Zhuo WANG ; Lu LIN
Chinese Journal of Modern Nursing 2021;27(22):2946-2950
Objective:To translate the Anterior Skull Base Nasal Inventory-12 (ASK-12) into Chinese, and test its reliability and validity.Methods:Following the classic Brislin back translation model, the original scale was translated and back translated. A nursing expert, a doctor of Nursing, and a bilingual translator of doctoral degree adjusted and revised the scale to form the first draft of the Chinese version of ASK-12, and form the final scale through pre-survey. From July 2018 to July 2020, convenience sampling was used to select 220 patients with pituitary tumor resection via nasal sphenoid approach in a ClassⅢ Grade A hospital in Suzhou City for investigation. SPSS 22.0 was used to test the reliability and validity.Results:The internal consistency Cronbach's α coefficient of the Chinese version of the ASK-12 was 0.819, the equal-length Spearman-Brown half coefficient was 0.794, and the test-retest reliability correlation coefficient was 0.915. The content validity index was 0.9, and the cumulative variance contribution rate of the two common factors extracted by exploratory factor analysis was 54.45%, and the structure validity was good.Conclusions:The Chinese version of the ASK-12 has good reliability and validity, and can be used to evaluate the severity of postoperative nasal symptoms in patients undergoing anterior skull base surgery via the nose, which provides a scientific clinical evaluation tool.
7. Effects of abdominal massage on gastrointestinal tolerance in critically ill patients fed by nasogastric tube: a systematic review and Meta-analysis
Guixiao SHENG ; Fang SHEN ; Feifei CUI ; Meifen SHEN
Chinese Journal of Practical Nursing 2020;36(1):71-77
Objective:
To evaluate the effect of abdominal massage on gastrointestinal tolerance in critically patients with nasogastric tube feeding.
Methods:
The Chinese Biomedical Literature Database, China National Knowledge Infrastructure, The Wang fang database, Chinese Science and Technology Periodical Database, Cochrane Libraty, PubMed, Embase, CENTRAL were searched. Two researchers conducted quality evaluation and data extraction on studies that met the inclusion criteria. Data were analyzed with RevMan5.3 software.
Results:
Eight randomized controlled trials were included, including 628 patients. The results of Meta-analysis showed that abdominal massage could reduce the gastric residual volume of critically ill patients (
8.Study on the imbalance of T helper 17 cells/regulatory T cells in children with Henoch-Schonlein purpura complicated with Helicobacter pylori infection
Xiaoqing YANG ; Wenxing GUO ; Meifen LUO ; Baohua LIN ; Songlei GU ; Tong SHEN
Chinese Journal of Applied Clinical Pediatrics 2020;35(22):1703-1707
Objective:To investigate the roles of T helper 17(Th17)cells and regulatory T(Treg)cells, interleukin(IL)-17 levels, and IL-6 levels in the pathogenesis of Henoch-Schonlein purpura(HSP)complicated with Helicobacter pylori(HP)infection in children. Methods:Children diagnosed with acute HSP and/or HP infection by the Department of Pediatrics, Xiamen Maternal and Child Health Care Hospital from January 2017 to December 2018 were enrolled in the study.There were 15 children with HSP complicated with HP infection(HSP-HP group), 26 children with HSP(HSP group), and 21 children with HP infection(HP group). Twenty healthy children of the same age over the same period were included in the healthy control group.The proportions of Th17 cells and Treg cells were tes-ted by flow cytometry(FCM), and concentrations of IL-17 and IL-6 in plasma were measured by enzyme linked immunosorbent assay(ELISA).Results:(1)Compared with that of the healthy control group [(1.42±0.63)%], the proportion of Th17 cells in the HSP-HP group, HSP group and HP group [(2.79±0.78)%, (2.04±0.77)%, (2.08±0.86)%] was significantly increased( F=5.271, P<0.05). The levels of IL-17 and IL-6 in the HSP-HP group [(552.16±121.13) ng/L and (12.36±6.55) ng/L], HSP group [(506.39±113.62) ng/L and(11.82±5.01) ng/L] and HP group [(483.14±121.77) ng/L and (10.19±3.87) ng/L] were significantly higher than those in the healthy control group [(302.96±82.83) ng/L and (7.81±2.04) ng/L]( F=13.113, 6.692, all P<0.01). The proportion of Treg cells in the HSP-HP group [(1.35±0.49)%], HSP group [(1.13±0.86)%] and HP group [(1.09±0.65)%] was significantly lower than that in the healthy control group [(2.31±0.83)%]( F=6.983, P<0.05). (2)The proportion of Th17 cells and the level of IL-17 in the HSP-HP group were significantly higher than those in the HSP and HP groups(all P<0.05). There was no significant difference in the proportion of Th17 cells and the level of IL-17 between the HSP group and HP group(all P>0.05). There was no significant difference in the proportion of Treg cells and the level of IL-6 among the HSP-HP group, HSP group, and HP group(all P>0.05). Conclusions:The imbalance of Th17/Treg cells in peripheral blood may contribute to the development of HSP-HP, HSP and HP infection in children.High expression of Th17 cells and their related IL-17 is more prominent in children with HSP-HP.
9.Effects of exercise prescription on quality of life in patients with pituitary adenomas after surgery
Guixiao SHENG ; Wenting WANG ; Zhen ZHANG ; Meifen SHEN ; Yijie ZHANG ; Chao WU ; Chenxi LI
Chinese Journal of Practical Nursing 2020;36(8):566-572
Objective:To investigate the effects of exercise prescription on quality of life in patients with pituitary adenomas after surgery.Methods:A total of 82 patients with pituitary adenomas who met the inclusion criteria from December 2017 to September 2018 were enrolled. The control group received routine nursing care. The intervention group was given exercise prescription on the first day after surgery and 3 months after discharge from hospital. Both groups of patients completed the Health Status Survey(SF-36) before and after the intervention.Results:Before the intervention, there was no significant difference in baseline date of patients between two groups( P>0.05). After intervention, the general health dimension score (53.03±11.30) of the control group was significantly higher than the score within the group before treatment ( Z value was -4.398, P<0.05). The physiological function (86.67±7.46), physical function (66.67±29.28), role-emotional (71.30±22.75), vitality (68.33±8.78), general health dimension (61.39±10.66) of the intervention group were significant higher than the score within the group before treatment ( Z values were -4.809--2.041, P<0.05) . After the intervention, the significant difference were found in role-physical, general health, vitality, social function(77.18±15.71) and physiological health dimensions (73.75±10.00) between the intervention and control group ( Z values were -3.122- -2.467, t value was 3.044, P<0.05). After the intervention, non-function patients′ physiological function (72.06±23.19), general health (60.59±10.75), vitality (69.71±10.23) and social function (81.04±10.22) were significantly higher than the control group ( Z values were -2.832- -2.059, P<0.05). Conclusion:Exercise prescription can improve the quality of life in patients with pituitary adenomas after surgery.
10. Application status and prospects of telemedicine in the field of burns
Yuhong CHENG ; Hui WANG ; Lihong LIU ; Liping ZHANG ; Qiongfen SHEN ; Meifen MENG
Chinese Journal of Burns 2019;35(9):697-700
Telemedicine refers to two or more medical institutions using communication, computer, and network technology to provide remote diagnosis, treatment, and care for patients. The necessity and feasibility of applying telemedicine are determined by the characteristics of burn injury. This paper reviewed the application of telemedicine in burn surgery at home and abroad, then analyzed the significance and problems of using this technology in the field of burns, finally forecasted the future of application of telemedicine in burn surgery.

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