1.Analysis of the characteristics and risk factors of dyslipidemia in 315 children with Wilson disease
Yunyun XU ; Daiping HUA ; Shufan GE ; Qiaoyu XUAN ; Lanting SUN ; Wenming YANG ; Han WANG
Acta Universitatis Medicinalis Anhui 2026;61(9):1672-1678
ObjectiveTo analyze the lipid characteristics and related risk factors of children with Wilson disease (WD). MethodsThe clinical data of 315 children with WD and 248 healthy children who underwent physical examination were retrospectively collected. The differences in lipid levels between the two groups were compared. The WD group was divided into the normal lipid group (85 cases) and the dyslipidemia group (230 cases) according to lipid levels. General data and biochemical indicators were compared between the two groups, and multivariate Logistic regression analysis was used to analyze the independent risk factors for dyslipidemia in children with WD. ResultsThe incidence of dyslipidemia in children with WD was 73.0% (230/315), comprising 77 cases (33.5%) of hypertriglyceridemia, 11 cases (4.8%) of hypercholesterolemia, 104 cases (45.2%) of combined hyperlipidemia, 9 cases (3.9%) of hyperlipoprotein(a)emia, and 29 cases (12.6%) of hypoalphalipoproteinemia. There were statistically significant differences in age distribution among different types of dyslipidemia (P<0.05), whereas no significant differences were observed in gender distribution (P>0.05). Compared with the normal lipid group, the dyslipidemia group showed significantly higher levels of homocysteine, superoxide dismutase (SOD), platelet count (PLT), fibrinogen, alanine aminotransferase, aspartate aminotransferase, γ-glutamyl transferase, uric acid, cystatin C (Cys-C), type IV collagen (C-IV), and laminin (all P<0.05). Multivariate Logistic regression analysis showed that C-IV (OR=5.037, 95% CI: 2.562-9.900), PLT (OR=2.297, 95% CI: 1.580-3.339), Cys-C (OR=2.008, 95% CI: 1.395-2.890), and SOD (OR=1.996, 95% CI: 1.342-2.970) were all independent risk factors for dyslipidemia in children with WD. ConclusionChildren with WD have a high incidence of dyslipidemia, which is dominated by combined hyperlipidemia and hypertriglyceridemia. C-IV, PLT, Cys-C, and SOD are independent risk factors for dyslipidemia in children with WD.
2.Study on the traditional Chinese medicine syndromes in 757 cases of children with hepatolenticular degeneration based on factor analysis and cluster analysis
Daiping HUA ; Han WANG ; Qiaoyu XUAN ; Lanting SUN ; Ling XIN ; Xin YIN ; Wenming YANG
Journal of Beijing University of Traditional Chinese Medicine 2025;48(3):303-311
Objective:
To explore the distribution of traditional Chinese medicine (TCM) syndromes in children with hepatolenticular degeneration (Wilson disease, WD) based on factor analysis and cluster analysis.
Methods:
From November 2018 to November 2023, general information (gender, age of admission, age of onset, course of disease, clinical staging, Western medicine clinical symptoms, and family history) and TCM four-examination informations (symptoms and signs) were retrospectively collected from 757 cases of children with WD at the First Affiliated Hospital of Anhui University of Chinese Medicine, and factor analysis and cluster analysis were used to investigate TCM syndromes in children with WD.
Results:
A total of 757 children with WD were included, of which 483 were male and 274 were female; the median age at admission was 12.58 years, the median age at onset was 8.33 years, and the median course of disease was 24.37 months; clinical typing result indicated 506 cases of hepatic type, 133 cases of brain type, 99 cases of mixed-type, and 19 cases of other type; 36.46% of the children had no clinical symptoms (elevated aminotransferases or abnormalities in copper biochemistry); a total of 177 cases had a definite family history, and 10 cases had a suspected family history. Forty-three TCM four-examination information were obtained, with the top 10 in descending order being feeling listless and weak, brown urine, slow action, inappetence, dim complexion, slurred speech, angular salivation, body weight loss, hand and foot tremors, and abdominal fullness. In children with WD, the syndrome element of disease location was primarily characterized by the liver, involving the spleen and kidney, and the syndrome elements of disease nature were characterized by dampness, heat, and yin deficiency. Based on factor analysis and cluster analysis, five TCM syndromes were derived, which were, in order, syndrome of dampness-heat accumulation (265 cases, 35.01%), syndrome of yin deficiency of the liver and kidney (202 cases, 26.68%), syndrome of liver hyperactivity with spleen deficiency (185 cases, 24.44%), syndrome of qi and blood deficiency (79 cases, 10.44%), and syndrome of yang deficiency of the spleen and kidney (26 cases, 3.43%).
Conclusion
The TCM syndromes of children with WD were primarily syndromes of dampness-heat accumulation, yin deficiency of the liver and kidney, and liver hyperactivity with spleen deficiency. The liver was the main disease location, and the disease nature was characterized by deficiency in origin and excess in superficiality, excess and deficiency mixed. These findings suggest that treating children with WD should be based on the liver while also considering the spleen and kidney.
3.Epidemiological characteristics of injury deaths in local residents in Nanjing, 2009-2023
Ting ZHANG ; Qiaoyu HUANG ; Simeng SUN ; Weiwei WANG ; Xin HONG ; Huafeng YANG
Chinese Journal of Epidemiology 2025;46(7):1196-1203
Objective:To understand the epidemiological characteristics of injury deaths in local residents in Nanjing from 2009 to 2023, and provide evidence for the development of injury prevention and control strategies.Methods:The injury mortality data in Nanjing from 2009 to 2023 were analyzed based on the death cause surveillance system. In the recorded 33 542 injury death cases, 19 906 (59.35%) were men, and 13 636 (40.65%) were women. The crude mortality rate, age-standardized mortality rate, age-specific mortality rate, cause-eliminated life expectancy (CELE), potential gains in life expectancy (PGLEs) and life loss rate, were calculated. Joinpoint 5.0 software was used to estimate the average annual percentage change (AAPC) and its 95% CI to assess temporal trends of injury deaths. Results:In Nanjing, the crude injury mortality rate showed an upward trend (AAPC=2.11%), while the age-standardized mortality rate exhibited a downward trend (AAPC=-1.27%) from 2009 to 2023. The ranking of injury deaths in all causes of death declined from the 4 th in 2009 to the 6 th in 2023. The crude and age-standardized injury mortality rates in men were consistently higher than those in women. The primary cause of injury deaths was fall (31.42%). Drowning was the primary cause of injury deaths in age group 0-14 years (35.94%), while traffic accident was the primary cause in age group 15-64 years. For residents aged ≥65 years, fall was the primary cause of injury deaths. From 2009 to 2023, the CELE (AAPC=0.61%, 95% CI: 0.34%-0.89%, P<0.05) and the PGLEs (AAPC=1.73%, 95% CI: 0.21%-3.29%, P<0.05) showed increasing trends. The PGLEs and life loss rate due to injury were consistently higher in men than in women, but the AAPC of PGLEs and life loss rate was higher in women. Conclusions:From 2009 to 2023, the age-standardized injury mortality rate decreased, but the life loss due to injury deaths showed an upward trend in Nanjing, indicating that injury still has non-negligible negative impact on life expectancy.
4.Exploring the Mechanism of Zhinao Capsule in the Treatment of Mild Cognitive Impairment in Parkinson's Disease Based on Clinical Trials and Network Pharmacology
Qiaoyu XUAN ; Daiping HUA ; Lanting SUN ; Xin YIN ; Wenming YANG ; Han WANG
World Science and Technology-Modernization of Traditional Chinese Medicine 2025;27(10):3075-3084
Objective By observing the clinical efficacy of Zhinao capsule in the treatment of Parkinson's disease with mild cognitive impairment(PD-MCI)patients,we also explored the potential mechanism using network pharmacology and molecular docking technology,with the aim of providing a new idea for the treatment of PD-MCI with traditional Chinese medicine.Methods Random number table method was applied to divide the control group and test group into 35 cases each.Parkinson's disease basic treatment plan was used in the control group,and Zhinao capsule was added in the test group.The observation course was determined to be 8 weeks.The Montreal Cognitive Assessment(MoCA)score,MDS-Unified Parkinson's Disease Rating Scale(MDS-UPDRS)Ⅰ,Ⅱ and Ⅲ,PD Traditional Chinese Medicine(PD-TCM),and safety-related indexes were completed before treatment and at the end of the 8th week of treatment.The network pharmacology method was used to obtain the targets related to Zhinao capsules and PD-MCI.Constructed and analyzed the"drug-component-target"network.Analysis of"drug-disease"intersecting targets and enrichment of Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathways was obtained using R language.Protein-protein interaction(PPI)networks were constructed using Cytoscape 3.9.1.Finally,molecular docking was conducted.Results The MoCA score of the test group was remarkably greater than that of the control group after treatment(P<0.05);and the TCM syndrome score were noticeably below that of the control group(P<0.05).The test group showed a notable increase in the mean value of MoCA scale scores,and a clear decrease in the MDS-UPDRS Ⅰand PD-TCM before and after treatment(P<0.05).The MDS-UPDRS Ⅱ and Ⅲ scale scores of the test and control groups decreased to different degrees after treatment,but there was no significant difference(P>0.05).Zhinao capsules for PD-MCI treatment has calycosin,quercetin,kaempferol,etc.as core active ingredients,and TNF,IL-1β,IL-6,etc.as core targets.Molecular docking results also showed better binding of the core target to the active ingredient.Zhinao capsules regulates the expression of PPAR,cGMP-PKG,Oxytocin and other signaling pathway-related genes.Conclusion The Zhinao capsules can improve the cognitive function of PD-MCI patients,and the mechanism may be related to the fact that the components such as calycosin,quercetin,and kaempferol act on the targets such as TNF,IL-1β,and IL-6,and mediate the signaling pathways such as PPAR,cGMP-PKG,and Oxytocin.
5.Epidemiological characteristics of injury deaths in local residents in Nanjing, 2009-2023
Ting ZHANG ; Qiaoyu HUANG ; Simeng SUN ; Weiwei WANG ; Xin HONG ; Huafeng YANG
Chinese Journal of Epidemiology 2025;46(7):1196-1203
Objective:To understand the epidemiological characteristics of injury deaths in local residents in Nanjing from 2009 to 2023, and provide evidence for the development of injury prevention and control strategies.Methods:The injury mortality data in Nanjing from 2009 to 2023 were analyzed based on the death cause surveillance system. In the recorded 33 542 injury death cases, 19 906 (59.35%) were men, and 13 636 (40.65%) were women. The crude mortality rate, age-standardized mortality rate, age-specific mortality rate, cause-eliminated life expectancy (CELE), potential gains in life expectancy (PGLEs) and life loss rate, were calculated. Joinpoint 5.0 software was used to estimate the average annual percentage change (AAPC) and its 95% CI to assess temporal trends of injury deaths. Results:In Nanjing, the crude injury mortality rate showed an upward trend (AAPC=2.11%), while the age-standardized mortality rate exhibited a downward trend (AAPC=-1.27%) from 2009 to 2023. The ranking of injury deaths in all causes of death declined from the 4 th in 2009 to the 6 th in 2023. The crude and age-standardized injury mortality rates in men were consistently higher than those in women. The primary cause of injury deaths was fall (31.42%). Drowning was the primary cause of injury deaths in age group 0-14 years (35.94%), while traffic accident was the primary cause in age group 15-64 years. For residents aged ≥65 years, fall was the primary cause of injury deaths. From 2009 to 2023, the CELE (AAPC=0.61%, 95% CI: 0.34%-0.89%, P<0.05) and the PGLEs (AAPC=1.73%, 95% CI: 0.21%-3.29%, P<0.05) showed increasing trends. The PGLEs and life loss rate due to injury were consistently higher in men than in women, but the AAPC of PGLEs and life loss rate was higher in women. Conclusions:From 2009 to 2023, the age-standardized injury mortality rate decreased, but the life loss due to injury deaths showed an upward trend in Nanjing, indicating that injury still has non-negligible negative impact on life expectancy.
6.Exploring the Mechanism of Zhinao Capsule in the Treatment of Mild Cognitive Impairment in Parkinson's Disease Based on Clinical Trials and Network Pharmacology
Qiaoyu XUAN ; Daiping HUA ; Lanting SUN ; Xin YIN ; Wenming YANG ; Han WANG
World Science and Technology-Modernization of Traditional Chinese Medicine 2025;27(10):3075-3084
Objective By observing the clinical efficacy of Zhinao capsule in the treatment of Parkinson's disease with mild cognitive impairment(PD-MCI)patients,we also explored the potential mechanism using network pharmacology and molecular docking technology,with the aim of providing a new idea for the treatment of PD-MCI with traditional Chinese medicine.Methods Random number table method was applied to divide the control group and test group into 35 cases each.Parkinson's disease basic treatment plan was used in the control group,and Zhinao capsule was added in the test group.The observation course was determined to be 8 weeks.The Montreal Cognitive Assessment(MoCA)score,MDS-Unified Parkinson's Disease Rating Scale(MDS-UPDRS)Ⅰ,Ⅱ and Ⅲ,PD Traditional Chinese Medicine(PD-TCM),and safety-related indexes were completed before treatment and at the end of the 8th week of treatment.The network pharmacology method was used to obtain the targets related to Zhinao capsules and PD-MCI.Constructed and analyzed the"drug-component-target"network.Analysis of"drug-disease"intersecting targets and enrichment of Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathways was obtained using R language.Protein-protein interaction(PPI)networks were constructed using Cytoscape 3.9.1.Finally,molecular docking was conducted.Results The MoCA score of the test group was remarkably greater than that of the control group after treatment(P<0.05);and the TCM syndrome score were noticeably below that of the control group(P<0.05).The test group showed a notable increase in the mean value of MoCA scale scores,and a clear decrease in the MDS-UPDRS Ⅰand PD-TCM before and after treatment(P<0.05).The MDS-UPDRS Ⅱ and Ⅲ scale scores of the test and control groups decreased to different degrees after treatment,but there was no significant difference(P>0.05).Zhinao capsules for PD-MCI treatment has calycosin,quercetin,kaempferol,etc.as core active ingredients,and TNF,IL-1β,IL-6,etc.as core targets.Molecular docking results also showed better binding of the core target to the active ingredient.Zhinao capsules regulates the expression of PPAR,cGMP-PKG,Oxytocin and other signaling pathway-related genes.Conclusion The Zhinao capsules can improve the cognitive function of PD-MCI patients,and the mechanism may be related to the fact that the components such as calycosin,quercetin,and kaempferol act on the targets such as TNF,IL-1β,and IL-6,and mediate the signaling pathways such as PPAR,cGMP-PKG,and Oxytocin.
7.Diagnosis and treatment of special type of laryngeal foreign body with granuloma in children.
Dezhen TU ; Zongtong LIN ; Ling SHEN ; Deping CHEN ; Zhongjie YANG ; Qiaoyu LIAO
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(2):163-167
Objective:This article explores the diagnosis and treatment of a special type of laryngeal foreign body with granuloma in children, providing a clinical reference for standardized diagnosis and treatment. Methods:This article retrospectively analyzes one case admitted to our department and five other cases reported in relevant literature involving a special type of laryngeal foreign body with granuloma in children. It summarizes the clinical characteristics of this disease and explores its diagnosis and treatment. Results:①A total of 6 cases were misdiagnosed and had a long course of illness. Five cases had no clear history of foreign body at the first visit. One case had foreign body history but no foreign body was found. ②The clinical symptoms were diverse, which could be hoarseness, cough, wheezing, dyspnea, or no symptoms. ③A total of 3 cases were diagnosed by laryngoscopy, and 3 cases were diagnosed by laryngoscopy and imaging examination. ④Foreign bodies that were not wrapped in granulomas, were removed first and then the granulomas were treated; foreign bodies wrapped in granulomas were removed after the removal of granulomas. Conclusion:A special type of laryngeal foreign body with granuloma may lack of accurate foreign body history, resulting in long-term retention of foreign bodies, leading to granuloma formation and misdiagnosis. Electronic laryngoscopy combined with CT examination contribute to early diagnosis. Low temperature plasma under endoscope and anesthetic laryngoscope is conducive to the exposure and precise removal of foreign bodies and avoids tracheotomy to a certain extent.
Child
;
Child, Preschool
;
Female
;
Humans
;
Infant
;
Male
;
Foreign Bodies/surgery*
;
Granuloma, Foreign-Body/therapy*
;
Larynx/pathology*
;
Retrospective Studies
8.The efficacy of drug combination with immunotherapy in pediatric obstructive sleep apnea and allergic rhinitis after surgery.
Zongtong LIN ; Ling SHEN ; Xinzhong GAO ; Qiaoyu LIAO ; Zhongjie YANG ; Pingfan LIU
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(12):1163-1170
Objective:To explore the efficacy of using drug combination and sublingual immunotherapy(SLIT) for pediatric obstructive sleep apnea(OSA) and allergic rhinitis(AR) after adenotonsillectomy, in order to provide a more optimized treatment plan after the surgery. Methods:A total of 95 pediatric OSA combined with AR were selected. According to the treatment plan, they were divided into the SLIT group(postoperative medication combined with SLIT) and the control group(postoperative medication treatment only). The comparisons were made between the two groups regarding the scores of the 18-item Quality of Life Questionnaire for Obstructive Sleep Apnea(OSA-18) and the Visual Analogue Scale(VAS) before and at 1 month, 3 months, 6 months, 1 year, and 2 years after treatment; the monthly total medication scores(TMS) from 1 month to 3 months, 4 months to 6 months, 7 months to 1 year, and 1 year to 2 years after treatment, as well as the number of acute attacks of AR in the 1st year and 2nd year after treatment; and the Lund-Kennedy scores and nasal resistance grading of nasal endoscopy before and at 1 month, 3 months, 6 months, 1 year, and 2 years after treatment. The effectiveness and safety were also analyzed. Results:After one year of treatment, the OSA-18 score, VAS score, TMS and Lund-Kennedy score in the SLIT group were significantly better than those in the control group. The nasal resistance was significantly reduced(P<0.05), and the frequency of AR attacks was significantly lower than that in the control group(P<0.05). After 2 years of treatment, the VAS score, Lund-Kennedy score and nasal resistance classification in the SLIT group tended to stabilize, while the OSA-18 score continued to decline. Conclusion:After surgery for pediatric OSA combined with AR, the use of drugs combined with SLIT can effectively alleviate AR symptoms, further improve OSA-related symptoms and quality of life, reduce drug dependence, decrease the frequency of AR attacks, and enhance the long-term efficacy of the surgery.
Humans
;
Sleep Apnea, Obstructive/surgery*
;
Rhinitis, Allergic/therapy*
;
Quality of Life
;
Child
;
Tonsillectomy
;
Treatment Outcome
;
Adenoidectomy
;
Sublingual Immunotherapy
;
Drug Therapy, Combination
;
Male
;
Female
9.Correlations Between Traditional Chinese Medicine Syndromes and Lipid Metabolism in 341 Children with Wilson Disease
Han WANG ; Wenming YANG ; Daiping HUA ; Lanting SUN ; Qiaoyu XUAN ; Wei DONG ; Xin YIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(15):140-146
ObjectiveTo study the correlations between traditional Chinese medicine (TCM) syndromes and lipid metabolism in children with Wilson disease (WD). MethodsClinical data and lipid metabolism indicators [total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), apolipoprotein A1 (ApoA1), apolipoprotein B (ApoB), and lipoprotein a (Lpa)] were retrospectively collected from 341 children with WD. The clinical data were compared among WD children with different syndromes, and the correlations between TCM syndromes and lipid metabolism in children with WD were analyzed. Least absolute shrinkage and selection operator (LASSO) regression was used for variable screening, and unordered multinomial Logistic regression was employed to analyze the effects of lipid metabolism indicators on TCM syndromes. ResultsThe 341 children with WD included 121 (35.5%) children with the dampness-heat accumulation syndrome, 103 (30.2%) children with the liver-kidney Yin deficiency syndrome, 68 children with the combined phlegm and stasis syndrome, 29 children with the spleen-kidney Yang deficiency syndrome, and 20 children with the liver qi stagnation syndrome. The liver-kidney Yin deficiency syndrome, combined phlegm and stasis syndrome, and spleen-kidney Yang deficiency syndrome had correlations with the levels of lipid metabolism indicators (P<0.05). Lipid metabolism abnormalities occurred in 232 (68.0%) children, including hypertriglyceridemia (108), hypercholesterolemia (23), mixed hyperlipidemia (67), lipoprotein a-hyperlipoproteinemia (12), and hypo-HDL-cholesterolemia (22). The percentages of hypertriglyceridemia and hypo-HDL-cholesterolemia varied among children with different TCM syndromes (P<0.05). Correlations existed for the liver-kidney Yin deficiency syndrome with TG, TC, and HDL-C, the combined phlegm and stasis syndrome with TG, the spleen-kidney Yang deficiency syndrome with TG, TC, and LDL-C, and the liver Qi stagnation syndrome with TC and LDL-C (P<0.05, P<0.01). ConclusionThe TCM syndromes of children with WD are dominated by the dampness-heat accumulation syndrome and the liver-kidney Yin deficiency syndrome, and dyslipidemia in the children with WD is dominated by hypertriglyceridemia and mixed hyperlipidemia. There are different correlations between TCM syndromes and lipid metabolism indicators, among which TG, TC, LDL-C, and HDL-C could assist in identifying TCM syndromes in children with WD.
10.Preliminary study on the biological characteristics of heat shock cognate protein 20 of Schistosoma japonicum
Xingang YU ; Kaijian YUAN ; Yilong LI ; Xuanru MU ; Hui XU ; Qiaoyu LI ; Wenjing ZENG ; Zhiqiang FU ; Yang HONG
Chinese Journal of Schistosomiasis Control 2025;37(3):294-303
Objective To clone and express the heat shock cognate protein 20 (SjHsc20) of Schistosoma japonicum, and to preliminarily investigate its biological characteristics. Methods The target fragment of the SjHsc20 gene was amplified using PCR assay and cloned into the pET-28a(+) expression plasmid to generate the recombinant expression vector pET-28a(+)-SjH-sc20, which was then transformed into Escherichia coli BL21 (DE3) competent cells. The recombinant SjHsc20 (rSjHsc20) protein was induced with isopropyl β-D-thiogalactopyranoside (IPTG) and purified, and the expression of the rSjHsc20 protein was checked with sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). The immunogenicity of the rSjHsc20 protein was detected using Western blotting, and the transcriptional levels of SjHsc20 were quantified in S. japonicum worms at different developmental stages and in male and female adult worms using real-time quantitative PCR (RT-qPCR) assay. Thirty female BALB/c mice at ages 6 to 8 weeks were divided into three groups, including the rSjHsc20 immunization group, the PBS control group, and the ISA 206 adjuvant group, of 10 mice in each group. Mice in the rSjHsc20 immunization group were subcutaneously immunized with 20 μg rSjHsc20 on days 1, 15 and 31, and animals in the PBS control group were subcutaneously injected with the same volume of PBS on days 1, 15 and 31, while mice in the ISA 206 adjuvant group were subcutaneously immunized with the same volume of ISA 206 adjuvant on days 1, 15 and 31, respectively. All mice in each group were infected with (40 ± 2) S. japonicum cercariae via the abdomen 14 day following the last immunization. Levels of serum specific IgG and its subtypes IgG1 and IgG2 antibodies against rSjHsc20, and the serum titers of anti-rSjHsc20 antibody were detected in mice using indirect enzyme-linked immunosorbent assay (ELISA). All mice were sacrifice 42 days post-infection, and S. japonicum worms were collected from the hepatic portal vein and counted. The eggs per gram (EPG), worm burden reductions and egg burden reductions were estimated to evaluate the protective efficacy of the rSjHsc20 protein. Results The SjHsc20 gene had an open reading frame (ORF) with 756 bp in length and encoded 252 amino acids, and the rSjHsc20 protein had a relative molecular mass of approximately 29 kDa. The rSjHsc20 protein was recognized by the serum of mice infected with S. japonicum and the serum of mice immunized with the rSjHsc20 protein, indicating that rSjHsc20 had a good immunogenicity. There was a significant difference in the transcriptional levels of the SjHsc20 gene among the 7-day (1.001 4 ± 0.065 7), 12-day (2.268 3 ± 0.129 2), 21-day (1.378 5 ± 0.160 4), 28-day (1.196 4 ± 0.244 0), 35-day (1.646 3 ± 0.226 1), 42-day worms of S. japonicum (1.758 0 ± 0.611 1) (F = 38.45, P < 0.000 1), and the transcriptional level of the SjHsc20 gene was higher in the 12-day worms than in worms at other developmental stages (all P values < 0.000 1). The serum levels of anti-rSjHsc20 IgG antibody were 0.106 6 ± 0.010 7, 0.108 3 ± 0.010 4, and 0.553 2 ± 0.069 1 in the PBS control group, ISA 206 adjuvant group, and rSjHsc20 immunization group following the last immunization, respectively, and the serum levels of IgG1 antibody were 0.137 3 ± 0.054 0, 0.181 1 ± 0.096 8, and 1.765 8 ± 0.221 1, while the levels of IgG2a antibody were 0.280 3 ± 0.197 6, 0.274 0 ± 0.146 3, and 1.560 4 ± 0.106 0, respectively. There were significant differences in the serum levels of anti-rSjHsc20 IgG (F = 397.70, P < 0.000 1), IgG1 (F = 401.00, P < 0.000 1) and IgG2a antibodies (F = 229.70, P < 0.000 1) among the three groups, and the serum levels of anti-rSjHsc20 IgG, IgG1 and IgG2a antibodies were higher in the rSjHsc20 immunization group than in the PBS control group and the ISA 206 adjuvant group (all P values < 0.000 1). There was a significant difference in the IgG1/IgG2a ratio among the rSjHsc20 immunization group (1.177 2 ± 0.143 6), the PBS control group (0.428 4 ± 0.199 8) and the ISA 206 adjuvant group (0.559 9 ± 0.181 1) (F = 43.97, P < 0.000 1), and the IgG1/IgG2a ratio was > 1 in the rSjHsc20 immunization group, which was higher than in the PBS control group and the ISA 206 adjuvant group (both P values < 0.000 1). The titers of serum anti-rSjHsc20 antibody were all above 1∶16 384 in the rSjHsc20 immunization group following immunizations on days 1, 15 and 31, indicating that the rSjHsc20 protein had a strong immunogenicity. The mean worm burdens were (16.60±5.75), (15.80±5.58) worms per mouse and (14.40±5.75) worms per mouse in the PBS control group, the ISA 206 adjuvant group and the rSjHsc20 immunization group 42 days post-infection with S. japonicum cercariae (F = 0.50, P > 0.05), and the EPG were 68 370 ± 22 690, 67 972 ± 19 502, and 41 075 ± 13 251 in the PBS control group, the ISA 206 adjuvant group and the rSjHsc20 immunization group (F = 4.55, P < 0.05), with lower EPG in the PBS control group and the ISA 206 adjuvant group than in the rSjHsc20 immunization group (both P values < 0.05). Immunization with the rSjHsc20 protein resulted in a worm burden reduction of 13.25% and an egg burden reduction of 39.92% relative to the PBS control group. Conclusions SjHsc20 is successfully cloned and expressed, and the rSjHsc20 protein induces partial immunoprotective effects in mice, which provides a basis for deciphering the biological functions of SjHsc20 and assessing the potential of SjH-sc20 as a vaccine candidate.


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