1.Effect of functional pelvic floor muscle training on stress urinary incontinence in women
Ya'nan LI ; Miao YE ; Juan WU ; Cong CHEN ; Lingfang WAN ; Lili YU ; Linlin GAO ; Yi QIN ; Huafang JING
Chinese Journal of Rehabilitation Theory and Practice 2026;32(6):690-698
ObjectiveTo observe the effect of functional pelvic floor muscle training on pelvic floor muscle function, incontinence symptoms and quality of life in female patients with stress urinary incontinence (SUI). MethodsFrom February, 2024 to July, 2025, 40 female patients with SUI were recruited from Beijing Bo'ai Hospital and advertisements. They were randomly divided into control group (n = 20) and experimental group (n = 20). The control group received conventional pelvic floor muscle contraction and relaxation training, and the experimental group received functional pelvic floor muscle contraction and relaxation training, for eight weeks. The data of pelvic floor muscle strength, pelvic floor muscle surface electromyography (sEMG), 1-hour urine pad test and Incontinence Quality of Life questionnaire (I-QOL) were collected before and after training. The compliance rate was counted after training. ResultsOne case dropped down in the control group and three cases dropped down in the experimental group. After treatment, the pelvic floor muscle strength increased in both groups (|Z| > 3.317, P < 0.01), the pre-resting average value, sustained contraction average value and durable contraction average value of sEMG improved in the control group (|t| > 2.731, P < 0.05), the mass of 1-hour urine pad significantly reduced (t > 9.215, P < 0.001) and the I-QOL score significantly increased (|t| > 13.229, P < 0.001) in both groups; compared with the control group, the pelvic floor muscle strength significantly increased (Z = -2.281, P = 0.023), the mass of 1-hour urine pad significantly reduced (t = 4.215, P < 0.001), the I-QOL score significantly increased (t = -4.501, P < 0.001), and the compliance rate significantly increased (Z = -2.798, P < 0.01) in the experimental group . ConclusionFunctional pelvic floor muscle training can significantly improve pelvic floor muscle strength, incontinence symptoms and quality of life in female patients with SUI.
2.Efficacy and Safety of Acupuncture Combined with Levodopa in the Treatment of Parkinson's Disease: A Randomized Controlled Trial
Jingyun ZHU ; Xiyan GAO ; Linlin WANG ; Zhixin REN ; Guiling WANG ; Jing GUO ; Yanrong WU
Journal of Traditional Chinese Medicine 2025;66(14):1456-1462
ObjectiveTo evaluate the clinical efficacy and safety of acupuncture combined with levodopa in the treatment of Parkinson's disease(PD). MethodsA total of 60 patients with PD were enrolled and randomly assigned to test group or control group, with 30 patients in each group. The control group received levodopa only, starting at 100 mg per dose, three times daily, with gradual increases not exceeding a maximum daily dose of 800 mg. The test group received acupuncture three times per week in addition to levodopa. Both groups were treated for 12 weeks. Assessments were conducted before treatment, after 6 and 12 weeks treatment, using the Unified Parkinson's Disease Rating Scale(UPDRS), Wearing-Off Questionnaire-9(WOQ-9), Montreal Cognitive Assessment(MoCA), Mini-Mental State Examination(MMSE), Depression Rating Scale(DRS), Hamilton Depression Scale(HAMD), Hamilton Anxiety Scale(HAMA), PD Questionnaire-39(PDQ-39), and Pittsburgh Sleep Quality Index(PSQI). Repeated measures ANOVA was utilized to evaluate the effects of time, group, and their interaction on each index. Spearman correlation analysis was conducted to examine the relationships between combined treatment and outcome scores. Adverse events in both groups were recorded throughout the study. ResultsBoth groups showed significant improvements after 6 and 12 weeks treatment, with decreases in UPDRS total score, WOQ-9 total score, DRS score, HAMD score, HAMA score, PDQ-39 score, and PSQI score, and increases in MoCA and MMSE scores(P<0.05). Compared with the control group, the test group demonstrated significantly greater improvements in all the above indicators after 6 and 12 weeks (P<0.05). Repeated measures ANOVA showed significant time main effects, group main effects, and their interaction across all outcome measures(P<0.01). Spearman correlation analysis revealed that combined therapy was significantly negatively correlated with UPDRS, WOQ-9, DRS, HAMD, HAMA, PDQ-39, and PSQI scores, while positively correlated with MoCA and MMSE scores after 12 weeks of treatment(P<0.05). Both groups did not experience any serious adverse events and did not affect treatment. ConclusionAcupuncture combined with levodopa is more effective than levodopa alone in improving motor function, non-motor symptoms, cognitive function, depression and anxiety, quality of life, and sleep quality in patients with PD, with good safety.
3.Mechanism of Huazhuo Jiedu Prescription in Alleviating Renal Fibrosis in 5/6 Nephrectomy Rats Based on AMPK/mTOR Pathway
Wanqing WANG ; Yashi WANG ; Hui GAO ; Linlin ZHENG ; Dong BIAN ; Cun FENG ; Xiaona WEI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(22):90-97
ObjectiveBased on the AMP-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) signaling pathway, this study aimed to observe the effect of the Huazhuo Jiedu prescription on renal fibrosis in 5/6 nephrectomy rats and explore its underlying mechanism. MethodsA total of 67 SPF-grade male SD rats were used, of which 11 were randomly selected as the normal group. A chronic renal failure (CRF) model was established using 5/6 nephrectomy. The successfully modeled rats were randomly assigned to the model group, losartan potassium group (4.5 mg·kg-1), and low- (1.175 g·kg-1), medium- (2.35 g·kg-1) and high-dose (4.7 g·kg-1) Huazhuo Jiedu prescription groups, with 9 rats per group. Each group received an equivalent volume of saline or the corresponding concentration of Huazhuo Jiedu prescription by gavage once daily for 8 weeks. Hematoxylin-eosin (HE) and Masson staining were used to observe renal tissue pathological changes. Transmission electron microscopy examined renal ultrastructure. Immunohistochemistry (IHC) detected expressions of α-smooth muscle actin (α-SMA) and transforming growth factor-β1 (TGF-β1). Western blot analyzed expression levels of microtubule-associated protein Ⅰ light chain 3Ⅱ (LC3Ⅱ), Beclin1, p62, AMPK, phosphorylated AMPK (p-AMPK), mTOR, and phosphorylated mTOR (p-mTOR). ResultsCompared with the normal group, the model group exhibited glomerular shrinkage, mesangial and interstitial thickening, and tubular vacuolar degeneration, with no evident autophagosomes or autophagolysosome structures. Expression levels of α-SMA and TGF-β1 were significantly increased (P0.01), while p-AMPK/AMPK, Beclin1, and LC3Ⅱ were significantly decreased (P0.01), and p-mTOR/mTOR and p62 were significantly increased (P0.01). Compared with the model group, the medium- and high-dose Huazhuo Jiedu prescription groups and the losartan potassium group showed varying degrees of pathological improvement. Autophagosomes with double- or multiple-layer membranes and autophagolysosomes with monolayer membranes containing undegraded organelles were observed. Renal α-SMA and TGF-β1 protein expression levels were markedly reduced (P0.05, P0.01), p-mTOR/mTOR and p62 were significantly decreased (P0.05, P0.01), and p-AMPK/AMPK, Beclin1, and LC3Ⅱ expression levels were significantly increased (P0.05, P0.01). ConclusionHuazhuo Jiedu prescription may improve renal fibrosis in 5/6 nephrectomy rats by regulating the AMPK/mTOR signaling pathway and enhancing autophagy.
4.Component Analysis of Anmeidan and Its Mechanism in Regulating ERK1/2/MNK/ELF4E Signaling Pathway to Improve Circadian Rhythm in Insomnia Rats
Yi GAO ; Bo XU ; Jing XIA ; Linlin CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(10):44-53
ObjectiveTo identify the main chemical constituents of Anmeidan (AMD) and to explore the mechanism of AMD in regulating the extracellular signal-regulated kinase 1/2 (ERK1/2)/mitogen-activated protein kinase (MAPK)-interacting serine/threonine-protein kinase (MNK)/eukaryotic translation initiation factor 4E (eIF4E) signaling pathway to improve circadian rhythm disturbances in insomnia rats. MethodsThe main chemical constituents of AMD were identified using ultra-high-performance liquid chromatography-linear ion trap-electrostatic orbital trap mass spectrometry (UPLC-LTQ/Orbitrap/MS) in combination with reference standards. Sixty male Sprague-Dawley (SD) rats were randomly divided into control, model, melatonin, and AMD low-, medium-, and high-dose groups, with 10 rats in each group. Except for the control group, all rats were administered p-chlorophenylalanine via intraperitoneal injection to establish an insomnia model. The activity-rest rhythm of rats was assessed using the open field test and circadian rhythm test. Hematoxylin-eosin (HE) staining and Nissl staining were used to observe structural changes in hypothalamic neurons. Immunofluorescence, real-time quantitative polymerase chain reaction (Real-time PCR), and Western blot analysis were employed to detect mRNA and protein expression levels of ERK1/2, MNK, and eIF4E in the hypothalamus. ResultsA total of 50 chemical components, including flavonoids, phenylpropanoids, triterpenoid saponins, alkaloids, and lignans, were identified in AMD. Compared with the control group, the model group exhibited significantly increased total distance traveled, average speed, central area residence time, and cumulative rearing time (P<0.01), as well as prolonged cumulative activity time and total activity time in both light and dark phases (P<0.01). Hypothalamic neurons in the model group were sparsely arranged, reduced in number, and exhibited nuclear disappearance or nucleolar rupture, with a significantly increased apoptosis index (P<0.01). The cytoplasm appeared turbid, Nissl body staining was lighter, and the Nissl body apoptosis index was significantly increased (P<0.01). The mRNA expression levels of ERK1/2, MNK, and eIF4E were significantly decreased (P<0.01), along with a significant reduction in protein expression levels of ERK1/2, phosphorylated ERK1/2 (p-ERK1/2), MNK, phosphorylated MNK (p-MNK), eIF4E, and phosphorylated eIF4E (p-eIF4E) (P<0.01). Compared with the model group, the total distance, average speed, central area residence time and body upright cumulative time of the AMD high-dose group were significantly reduced (P<0.01). The total distance, average speed and body upright cumulative time of the AMD medium-dose group were significantly reduced (P<0.01). The cumulative time of light activity and total time of activity in each dose group of AMD were significantly shortened (P<0.01). The cumulative time of dark activity in the high-dose group of AMD was prolonged (P<0.01). The neurons in the middle and high dose groups of AMD were closely arranged, the number of neurons increased, and the apoptosis index of hypothalamic cells decreased significantly (P<0.05, P<0.01). The cytoplasm of the low, middle and high dose groups of AMD was clear, the color of Nissl body became darker, and the apoptosis index of Nissl body decreased significantly (P<0.01). The expression of ERK1/2, MNK and eIF4E mRNA and protein in the hypothalamus of the middle and high dose groups of AMD increased significantly (P<0.05, P<0.01). ConclusionAMD primarily contains 50 chemical constituents, including flavonoids, phenylpropanoids, and triterpenoid saponins. It exhibits a "synergistic enhancement" effect through multiple components and multiple pathways to improve insomnia. AMD ameliorates circadian rhythm disturbances in p-chlorophenylalanine-induced insomnia rats by upregulating ERK1/2/MNK/eIF4E signaling pathway-related proteins.
5.Visual acuity and corrected visual acuity of children and adolescents in Shanghai City
Chinese Journal of School Health 2025;46(1):24-28
Objective:
To investigate the visual acuity and correction conditions of children and adolescents in Shanghai, so as to provide a scientific basis for developing intervention measures to prevent myopia and protect vision among children and adolescents.
Methods:
From October to December 2022, a stratified cluster random sampling survey was conducted, involving 47 034 students from 16 municipal districts in Shanghai, covering kindergartens (≥5 years), primary schools, middle schools, general high schools and vocational high schools. According to the Guidelines for Screening Refractive Errors in Primary and Secondary School Students, the Standard Logarithmic Visual acuity Chart was used to examine naked vision and corrected vision of students, and general information was collected. The distribution and severity of visual impairment in different age groups were analyzed, and χ 2 tests and multivariate Logistic regression were used to explore factors associated with visual impairment.
Results:
The detection rate of visual impairment among children and adolescents was 76.2%, with a higher rate among females (78.8%) than males ( 73.8 %), higher among Han ethic students ( 76.2 %) than minority students (71.2%), and higher among urban students (76.7%) than suburban students (75.8%), all with statistically significant differences ( χ 2=162.6, 10.4, 5.5, P <0.05). The rate of visual impairment initially decreased and then increased with age, reaching its lowest at age 7 (53.8%) and peaking at age 17 (89.6%) ( χ 2 trend = 3 467.0 , P <0.05). Severe visual impairment accounted for the majority, at 56.6%, and there was a positive correlation between the severity of visual impairment and age among children and adolescents ( r =0.45, P <0.05). Multivariate Logistic regression showed that age, BMI, gender, ethnicity and urban suburban status were associated with visual impairment ( OR =1.18, 1.01, 1.38 , 0.79, 0.88, P <0.05). Among those with moderate to severe visual impairment, the rate of spectacle lens usage was 62.8%, yet only 44.8 % of those who used spectacle lens had fully corrected visual acuity. Females (64.9%) had higher spectacle lens usage rates than males (60.6%), and general high school students had the highest spectacle lens usage (83.9%), and there were statistically significant differences in gender and academic stages ( χ 2=57.7, 4 592.8, P <0.05).
Conclusions
The rate of spectacle lens usage among students with moderate to severe visual impairment is relatively low, and even after using spectacle lens, some students still do not achieve adequate corrected visual acuity. Efforts should focus on enhancing public awareness of eye health and refractive correction and improving the accessibility of related health services.
6.Differences in clinical and laboratory features and survival between Chinese and Western patients with myelodysplastic neoplasm
Linlin LIU ; Bing LI ; Tiejun QIN ; Zefeng XU ; Shiqiang QU ; Lijuan PAN ; Qingyan GAO ; Meng JIAO ; Yujiao JA ; Chenwen LI ; Qi SUN ; Huijun WANG ; Zhijian XIAO
Chinese Journal of Hematology 2025;46(3):223-230
Objective:To compare the clinical and laboratory characteristics and survival between Chinese and Western patients with myelodysplastic neoplasms (MDS) .Methods:Clinical and laboratory data were collected from 1,464 primary adult patients diagnosed with MDS at the Institute of Hematology & Blood Diseases Hospital from August 2016 to June 2024. Collected data were retrospectively analyzed and compared with 2,191 patients from the International Working Group for the Prognosis of Myelodysplastic Syndromes (IWG-PM) .Results:Chinese patients were significantly younger (median age: 56 years vs. 72 years, P<0.001) and experienced more severe hematopenia ( P<0.001) compared with patients from the IWG-PM. Further, Chinese patients exhibited a higher percentage of isolated del (20q), +8, and complex karyotypes as well as a lower percentage of normal karyotypes, del (5q), and -Y ( P<0.001). Higher U2AF1, NRAS, and NPM1 mutation rates and lower ASXL1, SF3B1, and RUNX1 mutation rates were observed in Chinese patients than in participants from the IWG-PM ( P<0.05). No significant difference in overall survival (OS) was found between the two groups (median OS: 48 [95% CI: 40 - 56]months, vs. 45[95% CI: 40 - 49] months; P=0.449). Among participants aged ≤45 years, Chinese patients demonstrated more trisomy 8 ( P=0.070) and U2AF1 mutation ( P<0.001) and higher 4-year OS rate compared with those from the IWG-PM (75.5% vs. 62.1%, P=0.001). Among participants aged ≥70 years, Chinese patients exhibited more complex karyotypes but fewer del (5q) as well as more NPM1 but less SF3B1 and TET2 compared with those from the IWG-PM ( P<0.05). Chinese patients demonstrated shorter survival (median OS: 20 [95% CI: 13 - 27] months vs. 37 [95% CI: 32 - 42] months, P<0.001) . Conclusion:Chinese and Western MDS patients differ in age of onset, clinical features, and cytogenetic or molecular genetic abnormalities, with significant differences persisting in age-matched groups. Although the OS is similar, disparities exist in survival for younger and older patients between the two populations.
7.Correlation of changes in serum albumin during hospitalization of surgical patients with clinical outcomes
Yonghao LI ; Liru CHEN ; Zijian LI ; Xiaoyi LUAN ; Lei LI ; Linlin GAO ; Peng LIU ; Hongyuan CUI ; Huan XI ; Mingwei ZHU
Chinese Journal of Clinical Nutrition 2025;33(5):331-339
Objective:To investigate the relationship between dynamic alterations in serum albumin (ALB) concentrations and clinical outcomes in hospitalized surgical patients, thus providing a basis for optimizing clinical management strategies.Methods:This study utilized data from a prospective observational cohort study on nutritional status among 7 122 elderly hospitalized patients across 34 tertiary hospitals in 18 Chinese cities. A total of 1 714 surgical patients hospitalized for 7-30 days with complete data were included. Standardized protocols were used to collect demographic data, clinical outcomes, and a range of laboratory results, including nutritional and hematological parameters. Heterogeneous effects of ALB on clinical outcomes were explored. Receiver operating characteristic (ROC) curves were used to determine cutoff values for infection-related complications. Correlation analyses and multiple linear regression models were used to identify independent predictors of the absolute change in ALB (?ALB).Results:Among the surgical patients, 69.7% (1 195/1 714) experienced a decline in ALB levels during their hospital stay, which was significantly associated with the occurrence of both infection- and non-infection-related complications. Simultaneously, a marked decrease in ALB was also significantly correlated with changes in nutritional and inflammatory status during hospitalization, worsening of gastrointestinal symptoms at discharge, and functional activity abnormalities (all P<0.05). ?ALB exhibited a close association with outcome variables such as infection-related complications. Based on the incidence of infection-related complications, a cutoff value for ALB was calculated, dividing patients into a high-risk group ( n=179) and a low-risk group ( n=1 535), and a statistically significant difference in the incidence of infection-related complications was found between these two groups ( P<0.05). Correlation analysis and multiple linear regression modeling revealed that female gender, a higher baseline ALB level, a poorer baseline inflammatory status, an exacerbation of inflammatory status, larger alterations in platelet-to-lymphocyte ratio, and the presence of infection-related complications were predictive factors for a decline in ALB levels among surgical patients during their hospital stay. Conclusions:?ALB serves as a critical indicator of the inflammatory-nutritional interplay, with its magnitude of decline effectively predicting clinical outcomes and nutritional status changes and guiding multidisciplinary interventions in surgical patients.
8.Prognostic value of the FS-15 frailty score in patients with myelodysplastic syndromes
Xin WANG ; Tiejun QIN ; Zefeng XU ; Shiqiang QU ; Bing LI ; Lijuan PAN ; Qingyan GAO ; Meng JIAO ; Yue ZHONG ; Binhan JIANG ; Linlin LIU ; Jinying ZHAO ; Wenjun XIE ; Zhijian XIAO
Chinese Journal of Hematology 2025;46(9):806-814
Objective:To identify the prognostic value of the Revised 15-item Myelodysplastic Syndrome-specific frailty scale (FS-15) in Chinese patients with myelodysplastic syndromes (MDS) .Methods:This retrospective study analyzed 812 patients with newly diagnosed MDS admitted to the Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences, and Peking Union Medical College from August 2016 to June 2023. Patients were assessed using the FS-15 and subsequently categorized into frail and non-frail groups. Clinical and laboratory characteristics, as well as overall survival (OS), were compared between these groups.Results:① The median patient age was 55 years ( IQR 45–64), with a median follow-up of 22.5 months (95% CI: 20.2–24.9) and a median OS of 43.3 months (95% CI: 36.8–49.8). The median FS-15 score was 0.42, with a cutoff value of 0.44. Male patients demonstrated higher median FS-15 scores than female patients (0.42 vs 0.38, P=0.006). In both the Revised International Prognostic Scoring System (IPSS-R; P=0.001) and Molecular International Prognostic Scoring System (IPSS-M; P=0.014) stratifications, FS-15 scores were significantly higher in the very high-risk group compared with the very low-risk group. ② The median OS was 54.7 months (95% CI: 47.5–NA) and 31.5 months (95% CI: 22.9–41.0) in the nonfrail ( n=452) and frail groups ( n=360), respectively ( P<0.001). The 3-year OS rates were (63.2 ± 3.2) % and (46.4 ± 3.6) % for the non-frail and frail groups, with 5-year OS rates of (49.9 ± 4.7) % and (32.0 ± 4.3) %, respectively ( P<0.001). ③Subgroup analysis revealed that nonfrail patients demonstrated significantly higher 3-year OS rates than frail patients in both the IPSS-M low-risk and very high-risk groups (all P<0.05). Similarly, nonfrail patients demonstrated superior 3-year OS rates compared with frail patients in the IPSS-R very low-risk, low-risk, and high-risk groups (all P<0.05). ④Among patients receiving hypomethylating agent therapy, the overall response rate was significantly higher in the non-frail group than in the frail group (86.7% vs 64.6%, P=0.007). Moreover, the frail group experienced higher rates of treatment-related adverse events, including febrile neutropenia (67.1% vs 47.4%, P=0.016) and liver function abnormalities (30.0% vs 14.5%, P=0.023), compared with the non-frail group. Conclusion:The FS-15 frailty score is a feasible and effective tool for assessing frailty in patients newly diagnosed with MDS in China and serves as a valuable prognostic indicator.
9.Myelodysplastic neoplasms with acute myeloid leukemia-like mutations: clinical features, molecular profiles, and prognosis
Zefei BAO ; Linlin LIU ; Bing LI ; Tiejun QIN ; Zefeng XU ; Shiqiang QU ; Lijuan PAN ; Qingyan GAO ; Meng JIAO ; Yujiao JIA ; Chengwen LI ; Qi SUN ; Huijun WANG ; Zhijian XIAO
Chinese Journal of Hematology 2025;46(11):997-1004
Objective:To investigate the clinical, laboratory, and prognostic features of myelodysplastic neoplasm (MDS) patients harboring acute myeloid leukemia (AML) -like mutations.Methods:We retrospectively analyzed clinical, molecular, and outcome data from 1 464 adults with primary MDS diagnosed at the Institute of Hematology and Blood Diseases Hospital from August 2016 to June 2024.Results:AML-like mutations were detected in 64 patients (4.4% ). Compared with patients without AML-like mutations, those with AML-like mutations were younger [median 50 ( IQR 39–60) vs 56 (45, 65) years; P=0.001], more often female (51.6% vs 35.4% ; P=0.009), had higher bone marrow blast percentage [6.5% (3.0%, 10.5% ) vs 2.5% (1.0%, 7.0% ) ; P<0.001], a higher rate of normal karyotype (75.0% vs 48.1% ; P<0.001), and lower hemoglobin levels [73 (67, 82) g/L vs 80 (66, 98) g/L; P=0.006]. The AML-like group had a higher number of gene mutations than the non-AML-like group [3 ( IQR 2–4) vs 2 (1, 3) ; P<0.001). It was enriched for mutations in NPM1, DNMT3A, WT1, PTPN11, NRAS, BCOR, FLT3, CEBPA, and MYC (all P<0.05) and had lower rates of U2AF1, ASXL1, and TP53 mutations (all P<0.05). Overall survival (OS) did not differ between groups ( P=0.730) ; however, the AML-like group had significantly shorter leukemia-free survival (LFS) [19 months (95% CI: 13–25) vs 46 months (95% CI: 38–54) ; P=0.012] and a higher 2-year cumulative incidence of AML transformation [ (41.7±9.1) % vs (10.4±1.1) % ; P<0.001]. Within the AML-like group, OS, LFS, and cumulative incidence of AML transformation did not differ between patients with low blasts and those with excess blasts (IB). Multivariable Cox regression identified age ≥60 years and PTPN11 mutations as independent adverse prognostic factors for OS, while DNMT3A, PTPN11, and FLT3 mutations independently predicted leukemic transformation. Conclusions:MDS patients harboring AML-like mutations exhibit distinct clinical and molecular features and a higher risk of progression to AML.
10.Ag2Se nanoparticles suppress growth of murine esophageal cancer allograft in mice by eliminating Porphyromonas gingivalis.
Yali ZHAO ; Jiayi LI ; Bianli GU ; Pan CHEN ; Li ZHANG ; Xiaoman ZHANG ; Pingjuan YANG ; Linlin SHI ; Shegan GAO
Journal of Southern Medical University 2025;45(2):245-253
OBJECTIVES:
To investigate the efficacy of Ag2Se nanoparticles for eliminating intracellular Porphyromonas gingivalis (P. gingivalis) in esophageal cancer and examine the effect of P. gingivalis clearance on progression of esophageal cancer.
METHODS:
Ag2Se nanoparticles were synthesized via a chemical synthesis method. The effects of Ag2Se nanoparticles on P. gingivalis viability and colony-forming ability were assessed using fluorescence staining and colony formation assays. In a mouse model bearing subcutaneous murine esophageal cancer cell allograft with P. gingivalis infection, the effect of treatment with Ag2Se nanoparticles on the abundance of P. gingivalis in the tumor tissues was quantified using RNAscope in situ hybridization and quantitative polymerase chain reaction (qPCR), and the changes in tumor volume were monitored. The biosafety of Ag2Se nanoparticles was assessed by examining liver and kidney functions and pathological changes in the major organs of the mice.
RESULTS:
Transmission electron microscopy revealed that the synthesized Ag2Se nanoparticles were uniformly dispersed spherical particles with a diameter around 50 nm. In vitro experiments demonstrated that exposure to Ag2Se nanoparticles significantly reduced the viability and clonal proliferation capacity of P. gingivalis in a dose-dependent manner. In the tumor-bearing mice, treatment with Ag2Se nanoparticles significantly reduced the abundance of P. gingivalis in tumor tissues and suppressed tumor cell proliferation. No significant damages to the liver and kidney functions or the major organs were observed in Ag2Se nanoparticle-treated mice, demonstrating good biocompatibility of Ag2Se nanoparticles.
CONCLUSIONS
Ag2Se nanoparticles exhibit significant bactericidal and inhibitory effects against P. gingivalis, and can effectively eliminate intracellular P. gingivalis to suppress the growth of esophageal cancer allograft in mice, suggesting the potential of Ag2Se nanoparticles in the treatment of esophageal cancer.
Animals
;
Porphyromonas gingivalis/drug effects*
;
Mice
;
Esophageal Neoplasms/pathology*
;
Nanoparticles
;
Metal Nanoparticles
;
Bacteroidaceae Infections
;
Cell Line, Tumor


Result Analysis
Print
Save
E-mail