1.Effect of warm acupuncture on PINK1/Parkin pathway in the skeletal muscle of rats with chronic fatigue syndrome
Huayuan LI ; Chun LI ; Junwei LIU ; Ting WANG ; Long LI ; Yongli WU
Chinese Journal of Tissue Engineering Research 2025;29(8):1618-1625
BACKGROUND:It has been found that mitochondrial function is abnormal in patients with chronic fatigue syndrome,and the administration of coenzymes can improve the symptoms.Warm acupuncture is one of the most important treatments for this disease,but its mechanism of action is unclear. OBJECTIVE:To investigate the effects of warm acupuncture on the phosphatase and tensin inducible kinase 1(PINK1)/Parkin pathway in the skeletal muscle of rats with chronic fatigue syndrome. METHODS:After 3 days of adaptive feeding,32 male Sprague-Dawley rats were randomly divided into normal control,model,warm acupuncture,and coenzyme Q groups with 8 rats in each group.The chronic fatigue syndrome model was established by multiple factors,including swimming exhaustion,chronic immobilization and fasting.After successful modeling,the normal group and the model group were treated with the same fixation and gavage procedures,and the warm acupuncture group was treated with acupuncture at Guanyuan,Zhongwan and Zusanli(bilateral)points,once a day.After the needling was inserted,the moxa pillar was put on the needle handle and ignited,three sessions once.The coenzyme Q group was given 1 mL/kg coenzyme by gavage,once a day for 14 days.The body mass,exhaustive swimming time and food utilization rate during the treatment were recorded.After the treatment,the bilateral gastrocnemius muscles of rats in each group were collected.The pathological morphology of the gastrocnemius muscle was observed by hematoxylin-eosin staining,the mitochondrial morphology and autophagosome of the gastrocnemius muscle were observed by transmission electron microscope.The expression level of microtubule-associated protein light chain 3(LC3)Ⅱ protein in the skeletal muscle was detected by immunohistochemistry.Western blot was used to detect the expression of PINK1,Parkin,LC3 Ⅰ,and LC3 Ⅱ in the skeletal muscle. RESULTS AND CONCLUSION:Compared with the normal group,the gastrocnemius muscle nuclei of the model group were pyknotic,condensed,the number of cells was increased,the cells were arranged disorderly,and the fibers in the gastrocnemius muscle were tightly arranged in the model group.Compared with the model group,the intercellular space became smaller,the nuclei were reduced,and the cell arrangement was orderly in the warm acupuncture group and coenzyme Q group.Compared with the normal group,the skeletal muscle mitochondria in the model group were swollen,fused,and vacuolated seriously,the membrane was partially broken,the matrix was more dissolved,the cristae was broken and disappeared,and autophagy appeared.Compared with the model group,the number of mitochondria increased,the arrangement was relatively neat,mitochondrial vacuolization and rupture of cristae in the gastrocnemius muscle were improved,the membrane structure was relatively intact,and autophagy occurred.Compared with the normal group,the expression of PINK1 protein in the skeletal muscle of the model group was significantly increased(P<0.05),while the expression of Parkin,LC3 Ⅱ and LC3 Ⅱ/Ⅰ protein was slightly upregulated(P>0.05).Compared with the model group,the protein expressions of PINK1,Parkin,LC3 Ⅱ and LC3 Ⅱ/Ⅰ were significantly upregulated in the warm acupuncture and coenzyme Q groups(P<0.05),and the up-regulation was more significant in the warm acupuncture group.To conclude,warm acupuncture can play a role in the treatment of chronic fatigue syndrome by activating the PINK1/Parkin pathway,upregulating LC3 Ⅱ expression,forming mitochondrial autophagosomes,promoting the degradation of damaged mitochondria,and improving mitochondrial quality.
2.Clinical features of patients with recurrent primary common bile duct stones after cholecystectomy
Jianhui LU ; Yongli LI ; Ruifang GUO ; Rongquan XUE
Journal of Clinical Hepatology 2025;41(1):118-126
ObjectiveTo investigate the general situation, dietary factors, and clinical features of patients with recurrent primary common bile duct stones, and to provide a basis for effective prevention of stone recurrence. MethodsA retrospective analysis was performed for 23 730 patients who underwent cholecystectomy due to cholelithiasis in Department of Hepatobiliary, Pancreatic and Spleen Surgery, Inner Mongolia People’s Hospital, from January 2013 to December 2023, and according to the presence or absence of recurrence of primary common bile duct stones after surgery, 334 patients were divided into recurrence group. The recurrence group was further analyzed based on sex in terms of recurrence rate, recurrence cycle, recurrence age, recurrence type, and general, disease, imaging, and dietary factors. The independent-samples t test was used for comparison of continuous data between two groups, the chi-square test was used for comparison of categorical data between two groups. ResultsThere were 334 cases of recurrence of primary bile duct stones after cholecystectomy, with a recurrence rate of 1.41%, and the highest frequency of recurrence cycle was observed in 10 years after surgery, with a significant difference in recurrence cycle between the male and female patients (t=5.238, P<0.001). There was a significant difference in the recurrence rate of stones after surgery between the patients with simple gallstones and those with gallbladder and common bile duct stones at initial diagnosis (1.23% vs 2.76%, χ2=42.104, P<0.001). The patients with recurrence aged >60 years accounted for the highest proportion in the whole population and in both male and female populations, and 92% were Han residents; 10% of the patients with recurrence had a family history of gallstones, and as for comorbidities, the patients with hypertension accounted for the highest proportion. Among the patients with recurrence, the patients with smoking or drinking accounted for 76.7% and 10.3%, respectively. As for body weight, 63.8% of the patients with recurrence had a normal body mass index (BMI), and 23.2% of the patients were overweight; compared with body weight at the time of the first gallbladder surgery, a reduction in body weight was observed in 60.1% of the patients with recurrence, while an increase in body weight was observed in 22.9% of the patients with recurrence. There were significant differences between the male and female patients with recurrence in age composition, ethnicity, the type of place of residence, comorbidities, smoking, drinking, BMI, and the change in body weight (all P<0.001). As for the type of stone recurrence, the ratio of multiple stones, solitary stones, and muddy stones was 74∶15∶11, and the stone size of <1 cm, 1-2 cm, and >2 cm accounted for about 40.5%, 48.8%, and 10.6%, respectively. As for the surgical procedure, the patients undergoing laparotomy accounted for 66.1%, and those undergoing laparoscopy accounted for 33.9%. The patients with various types of dyslipidemia accounted for a percentage of<30%. There were significant differences between the male and female patients with recurrence in the type of stones at initial onset, the type and size of stones, and surgical procedure (all P<0.001). Imaging data showed that 4 patients had an abnormal structure of the bile duct, manifesting as long and curve cystic ducts, and 73.1% of the patients had common bile duct dilatation after surgery. The follow-up of dietary factors showed irregular diets in 55.8% of the patients with recurrence. As for the dietary structure, meat and staple food accounted for 43.8% and 37.8%, respectively, which showed a sex difference, with meat in male patients and staple food in female patients; 64.1% of the patients with recurrence had a high-salt and high-oil diet; 59.8% of the patients had changes in diet after the first surgery for stones, among whom 80% were able to have a regular diet, and the patients with a regular diet accounted for 92%. ConclusionThere is a relatively low recurrence rate of primary common bile duct stones in this area, and there is no sex difference. The peak of recurrence is 10 years after surgery, and recurrence of stones is mainly observed in the population aged >60 years. The analysis of dietary and clinical features can help doctors and patients to further understand the characteristics of the recurrence of primary common bile duct stones and provide a basis for subsequent targeted prevention.
3.Effects of probiotics on leptin and intestinal flora druing the formation of gallstones in mice
Yuetong SUN ; Rongquan XUE ; Longfu XI ; Yongli LI
International Journal of Surgery 2024;51(9):592-597
Objective:To investigate the inhibitory effect of probiotics on cholesterol gallstone formation in mice fed a high-fat diet and its impact on leptin and intestinal flora.Methods:Forty 8-week-old female C57BL/6J SPF mice were obtained. After one week of adaptive feeding, the mice were randomly assigned to G-NS group ( n=10), G-Probiotics group ( n=10), L-NS group ( n=10), and L-Probiotics group ( n=10). The G-NS group and G-Probiotics group were fed with standard diet, while the L-NS group and L-Probiotics group received lithogenic diet. Additionally, the G-Probiotics group and L-Probiotics group received a probiotic solution (5×10 9 CFU/ml, 0.1 mL/10 g) by gavage, once daily for 8 weeks. The G-NS group and L-NS group received an equal volume of normal saline by gavage. After 8 weeks, the stone formation rate of mice was observed, the serum leptin, total cholesterol (TC) and low-density lipoprotein cholesterol (LDL) contents of mice were detected, feces were collected and DNA was extracted to analyze the diversity and abundance of intestinal flora in mice. Count data were presented as percentages, Fisher′s exact probability test was used for comparisons, and measurement data with normal distribution were presented as mean±standard divation ( ± s). One-way ANOVA was applied for inter-group comparisons, and the K-W rank sum test was utilized to analyze inter-group differences in the intestinal microbiota section. Results:No gallstone was found in the G-NS group and G-Probiotics group. The stone formation rates of the L-NS group and the L-Probiotics group were 100% and 60%, respectively, with statistical significance ( P<0.05). In the G-NS group, L-NS group, G-Probiotics group and L-Probiotics group the serum total cholesterol (TC) content were (2.03±0.34) mmol/L, (4.75±0.76) mmol/L, (1.64±0.49) mmol/L and (3.66±0.62) mmol/L, the serum low-density lipoprotein (LDL) cholesterol content was (0.57±0.10) mmol/L, (1.55±0.29) mmol/L, (0.73±0.37) mmol/L and (1.06±0.16) mmol/L, the serum leptin content was (6.77±0.76) μg/L, (19.24±3.97) μg/L, (3.21±1.32) μg/L and (11.67±1.05) μg/L. Comparison of serum TC and LDL: L-NS group was higher than G-NS group, L-NS group was higher than L-Probiotics group, L-Probiotics group was higher than G-Probiotics group, the difference was statistically significant ( P<0.01). Comparison of serum leptin showed that L-NS group was higher than G-NS group and L-Probiotics group, G-NS group and L-Probiotics group was higher than G-Probiotics group, the difference was statistically significant ( P<0.01). Compared with the control group, the intestinal flora diversity of mice in the simple high-fat diet group decreased, the relative abundance of harmful bacteria increased, and the relative abundance of beneficial bacteria decreased. After probiotics intervention, the intestinal flora diversity increased, the relative abundance of beneficial bacteria increased, and the relative abundance of harmful bacteria decreased. Conclusion:Probiotics can lower leptin levels and alleviate leptin resistance, decrease serum TC and LDL levels, and reduce cholesterol levels in bile, thus reducing cholesterol buildup in the gallbladder and preventing stone formation.
4.Correlation between body fat distribution measured by quantitative CT and body mass index in adults receiving physical examination
Yang ZHOU ; Yongbing SUN ; Qi QIAO ; Xin QI ; Yawei DU ; Zhonglin LI ; Zhi ZOU ; Xiaoling WU ; Jing ZHOU ; Min QU ; Xiaolin ZHANG ; Yong WANG ; Shewei DOU ; Hongming LIU ; Fengshan YAN ; Jiadong ZHU ; Yongli LI
Chinese Journal of Health Management 2024;18(5):354-360
Objective:To analyze the correlation between body fat distribution measured by quantitative CT (QCT) and body mass index in adults receiving physical examination.Methods:It was a cross-sectional study. From January to December 2021, 3 205 adults undergoing physical examination who met the inclusion criteria and underwent chest CT and QCT examination in the health management discipline of Henan Provincial People′s Hospital were selected as the research objects. The general data were collected; and the subcutaneous fat area, visceral fat area, total abdominal fat area, liver fat content, abdominal obesity and fatty liver detection rate were measured by QCT. According to body mass index, the subjects were divided into normal group (18.5-<24.0 kg/m 2, 1 343 cases), overweight group (24.0-<28.0 kg/m 2, 1 427 cases) and obesity group (≥28.0 kg/m 2, 435 cases). One-way analysis of variance and χ2 test were used to compare the differences of QCT indexes among the three groups. Pearson and Spearman correlation analysis were used to evaluate the correlation between QCT indexes and body mass index. Receiver operating characteristic (ROC) curve was drawn to analyze the diagnostic effect of QCT on obesity and fatty liver. Results:Subcutaneous fat area, visceral fat area, total abdominal fat area, liver fat content, abdominal obesity and fatty liver detection rate in obese group were all significantly higher than those in overweight group and normal group [males, (147.60±46.44) vs (104.33±27.68), (73.46±22.65) cm 2; (297.46±54.70) vs (229.40±53.12), (159.57±49.68) cm 2; (445.06±70.24) vs (333.73±62.91), (233.02±61.87) cm 2; 11.30% (7.90%, 15.55%) vs 8.75% (6.50%, 11.70%), 6.60% (4.80%, 8.70%); 100.0% vs 96.0%, 64.0%; 92.9% vs 86.7%, 73.3%; females, (213.96±48.61) vs (155.85±35.31), (107.24±31.01) cm 2; (185.41±43.88) vs (142.48±41.75), (96.56±36.50) cm 2; (399.37±68.07) vs (298.33±56.86), (203.80±57.53) cm 2; 9.80% (6.90%, 13.30%) vs 7.30% (5.05%, 9.80%), 5.40%(3.50%, 7.20%); 96.4% vs 74.8%, 28.9%; 87.3% vs 75.6%, 56.5%], and were all positively correlated with body mass index (males, r/ rs=0.709, 0.738, 0.831, 0.402, 0.464, 0.225; females, r/ rs=0.798, 0.695, 0.841, 0.416, 0.605, 0.276) (all P<0.001). In both male and female subjects, the detection rates of obesity based on QCT were significantly higher than those based on body mass index (male, 86.9% vs 16.6%; female, 49.3% vs 8.9%), and the detection rates of fatty liver based on QCT were significantly higher than those based on ultrasound (male, 83.6% vs 57.1%; female, 65.2% vs 27.6%) (all P<0.001). ROC curve showed that when the visceral fat area of 142 cm 2 was used as the cut-off value for the diagnosis of obesity in male subjects, the sensitivity and specificity was 100% and 15.8%, respectively; and when the cut-off value of liver fat content 5.0% was used to diagnose fatty liver, the sensitivity and specificity was 88.9% and 25.1%, respectively. When the visceral fat area of 115 cm 2 was set as the cut-off value for the diagnosis of obesity in female subjects, the sensitivity and specificity was 96.4% and 55.3%, respectively; when the liver fat content of 5.0% was set as the cut-off value for the diagnosis of fatty liver, the sensitivity and specificity was 83.7% and 43.2%, respectively. Conclusions:The indexes of abdominal fat and liver fat measured by QCT in adults receiving physical examination are all positively correlated with body mass index. The effect of QCT in the diagnosis of obesity and fatty liver are both better than body mass index and ultrasound.
5.Quantitative CT study of fat distribution in normal weight population
Yang ZHOU ; Qi QIAO ; Yongbing SUN ; Xin QI ; Yawei DU ; Zhonglin LI ; Zhi ZOU ; Xiaoling WU ; Jing ZHOU ; Min QU ; Xiaolin ZHANG ; Yong WANG ; Shewei DOU ; Hongming LIU ; Fengshan YAN ; Gong ZHANG ; Jiadong ZHU ; Yongli LI
Chinese Journal of Health Management 2024;18(6):410-415
Objective:To analyze the distribution of body fat with quantitative computed tomography (QCT) in people with normal body mass index (BMI).Methods:A cross-sectional study was conducted in the physical examination population who underwent chest CT and QCT examination in the Department of Health Management, Henan Provincial People′s Hospital from January to December in 2021, and 1 395 physical examination subjects who met the inclusion criteria were selected as the research subjects. The subjects were divided into five groups according to their age. The general data of the subjects were collected. The total abdominal fat area (TFA), visceral fat area (VFA), subcutaneous fat area (SFA), total abdominal muscle area (TMA) and muscle fat content (MFC) in the subjects were measured by QCT. One-way analysis of variance, Welch test and Kruskal-Wallis test were used to compare the above QCT measurement indexes between the two genders among different age groups with normal BMI. Pearson correlation analysis was used to analyze the correlation between VFA and sarcopenia indexes. Multivariate linear regression was used to analyze the relationship between VFA and linear correlation variables in the related indicators of sarcopenia.Results:There were significant differences in TFA, VFA, TMA and SMI among different age groups in subjects with normal BMI (all P<0.05). Pearson correlation analysis showed that VFA was negatively correlated with TMA in some age groups (male: 18-39 years group: r=-0.351; 40-49 years group: r=-0.278; 60-69 years group: r=-0.245; female:40-49 years group: r=-0.251; 50-59 years group: r=-0.270;≥70 years group: r=-0.391; all P<0.01); it was negatively correlated with SMI (male: 18-39 years group: r=-0.352; 40-49 years group: r=-0.340; 50-59 years group: r=-0.266; 60-69 years group: r=-0.316; female: 40-49 years group: r=-0.240; 50-59 years group: r=-0.284; all P<0.001); it was positively correlated with MFC (male: 18-39 years group: r=0.342; 40-49 years group: r=0.291; female: 50-59 years group: r=0.133; 60-69 years group: r=0.284; all P<0.05). Multivariate linear regression analysis showed that VFA was independently and negatively correlated with SMI in both men and women after adjusting for age interference factors (male B=-1.881, t=-6.025, P<0.001; female B=-0.603, t=-2.887, P=0.004), and it was independently positively correlated with MFC (male B=1.230, t=4.271, P<0.001;female B=0.893, t=3.836, P<0.001). There was an independent negative correlation between VFA and TMA in male subjects ( B=0.263, t=2.478, P=0.013). Conclusions:VFA is correlated with TMA, SMI and MFC in people with normal BMI. Regardless of gender, SMI has a negative effect on VFA, and MFC has a positive effect on VFA.
6.Analysis of the Influencing Factors of Clinical Characteristics and Severity of Acute Tinnitus
Linna HUI ; Yongli SONG ; Liu QI ; Huarong YANG ; Rui LI ; Yangyang PAN ; Dingjun ZHA
Journal of Audiology and Speech Pathology 2024;32(5):426-431
Objective To study the clinical characteristics and related factors affecting the severity of acute tinnitus in patients.Methods A retrospective analysis was conducted on the data of 319 patients with acute tinni-tus.All patients had detailed case history,including basic patient information,tinnitus location,course of disease,acoustic characteristics of tinnitus,hearing loss,combined headache,dizziness,aural fallness,earache and other symptoms,as well as accompanying clinical diseases.All patients completed the tinnitus handicap inventory(THI),generalized anxiety disorder(GAD-7),patient health questionnaire(PHQ-9),pittsburgh sleep quality index(PSQI),hyperacusis questionnaire(HQ),type D personality scale-14(DS-14),etc.The mild tinnitus group was determined based on a THI score of ≤36.The moderate tinnitus group was determined based on a THI score of 38~56.The severe to extremely severe tinnitus group was determinded based on THI 56~100.THI grouping was used as the dependent variable and the above factors as independent variables.The correlation between each factor and the severity of acute tinnitus was analyzed using ordered multinomial logistic regression.Results Among 319 patients with acute tinnitus,158(49.5%)were in the mild tinnitus group,and 72(22.6%)were in the moderate tinnitus group,and 89(27.9%)were in severe to extremely severe tinnitus group.Ordered multinomial logistic re-gression analysis found that hyperacusis(OR=3.921),anxiety(OR=2.495),depression(OR=2.921),and D-type personality(OR=0.349)were associated with the severity of acute tinnitus(P<0.05),with more serere tin-nitus in these patients.Conclusion Hyperacusis,anxiety,depression,and D-type personality may be factors that affect the severity of acute tinnitus,so high attention should be paid when treating patients with acute tinnitus.
7.Correlations of lumbar bone mineral density and metabolic syndrome in adult males
Xinbei LIN ; Yongbing SUN ; Zhi ZOU ; Xiaoling WU ; Zhonglin LI ; Ling WANG ; Jiadong ZHU ; Yongli LI ; Hao LI
Chinese Journal of Medical Imaging Technology 2024;40(10):1562-1566
Objective To explore the correlations of lumbar bone mineral density(BMD)and metabolic syndrome(MS)in adult males.Methods Data of low dose chest CT and quantitative CT of 13 490 adult males were retrospectively analyzed,and lumbar BMD were measured to judge whether MS existed and the degree of MS,and the correlations of lumbar BMD with MS or not and the degree of MS,as well as of lumbar BMD value and the related indicators of MS were assessed.Taken lumbar BMD as the dependent variable,the age,low density lipoprotein cholesterol(LDL-C),blood uric acid(BUA),hemoglobin(Hb)and MS or not were included in multiple linear regression analysis to observe the impact of MS and related indicators on lumbar BMD.Results Among 13 490 adult males,3 900 were found with MS(MS group),while 9 590 were found without MS(non-MS group).Significant difference of lumbar BMD was detected between groups(P=0.001).Lumbar BMD values were negatively correlated with MS(rs=-0.025,P=0.004)and the degree of MS(rs=-0.038,P<0.001),whereas positively correlated with abdominal obesity,high triglyceride and low HDL-C or not(rs=0.024,0.061,0.036,all P<0.001)but negatively correlated with hypertension and hyperglycemia or not(rs=-0.135,-0.104,both P<0.05).After adjustment of age,lumbar BMD of adult males was negatively correlated with MS or not as well as LDL-C(both P<0.05),but positively correlated with BUA and Hb(both P<0.001).Conclusion Lumbar BMD was associated with MS in adult males.
8.Epidemiological characteristics and outbreak analysis of varicella in Huai’an City in 2013-2022
Li TANG ; Qiang GAO ; Yongli CAI
Journal of Public Health and Preventive Medicine 2024;35(2):67-70
Objective To analyze the epidemiological characteristics of varicella in Huai'an City, Jiangsu Province from 2013-2022, and to provide a scientific basis for formulating effective prevention and control strategies for varicella in Huai'an City. Methods Descriptive epidemiological methods were used to analyze the data of 2013-2022 varicella cases in Huai'an City from China Disease Prevention and Control Information System and the varicella epidemic data from the public health emergency reporting management information system. Results A total of 32 325 varicella cases were reported during 2013-2022. The overall incidence rate showed an upward trend, with an obvious seasonal high incidence in winter and spring. The incidence rate in the central urban areas of all districts and counties was relatively higher. The ratio of male to female in reported cases was 1.16:1. The most cases were people aged 5-9 years old, accounting for 39.43% of the total number of cases. In terms of occupational distribution, students predominated, accounting for 54.77% of the total number of cases. From 2013 to 2022, a total of 70 public health outbreaks of varicella were reported in Huai'an, with the majority (45) occurring in primary schools, accounting for 64.29% of the total. Conclusion After the introduction of varicella into the national planned immunization program in 2023, it is recommended to increase the publicity of vaccination, carry out universal vaccination of varicella vaccine for high-risk groups such as students, and particularly increase the second dose coverage of varicella vaccine.
9.Long-term Epidemiological and etiological characteristics of hand foot mouth disease in Huai'an , Jiangsu Province , 2009 -2022
Lei XU ; Qiang GAO ; Yongli CAI ; Liyun YANG ; Li TANG ; Fang HE
Journal of Public Health and Preventive Medicine 2024;35(3):41-45
Objective The long-term epidemiological and etiological characteristics of hand, foot and mouth disease (HFMD) in Huai’an, Jiangsu were analyzed to provide scientific evidence for the prevention of HFMD. Methods The data of HFMD reports, etiological diagnosis and in Huai’an from 2009 to 2022 were described and analyzed. Results A total of 78 535 cases were reported from 2009 to 2022 , with 14-year average annual incidence rate of 114.71/100 000. Before 2020, the incidence rate of HFMD in Huai’an showed the epidemic intensity increased every other year on the whole, and the average annual incidence rate during the COVID-19 pandemic (2020-2022) (55.69/100 000) was significantly lower than that in previous years (2009-2019) (129.95/100 000). The joinpoint regression analysis showed that the best fitting model from 2009 to 2022 had no joinpoints, APC=AAPC=-1.24%. The overall trend showed a monotonously decreasing trend, but the trend was not statistically significant. The male-to-female distribution ratio was 1.53:1, and the age distribution was mainly under 5 years old, especially in scattered children. The epidemic season was from April to July. The results of etiological surveillance showed that the co-epidemic of Coxsackievirus A16 (CV-A16) and Enterovirus A71 (EV-A71) during the early stages had changed to the co-epidemic of CV-A16 and CV-A6 in the current period. Conclusion The burden of HFMD in Huai’an was large, and the epidemic intensity increased every other year was affected by the COVID-19 pandemic. The epidemiological features after the COVID-19 pandemic should be further monitored.
10.Hypoglycemic activities of flowers of Xanthoceras sorbifolia and identification of anti-oxidant components by off-line UPLC-QTOF-MS/MS-free radical scavenging detection.
Xiajing XU ; Yongli GUO ; Menglin CHEN ; Ning LI ; Yi SUN ; Shumeng REN ; Jiao XIAO ; Dongmei WANG ; Xiaoqiu LIU ; Yingni PAN
Chinese Herbal Medicines 2024;16(1):151-161
OBJECTIVE:
To identify phytochemical constituents present in the extract of flowers of Xanthoceras sorbifolia and evaluate their anti-oxidant and anti-hyperglycemic capacities.
METHODS:
The AlCl3 colorimetric method and Prussian Blue assay were used to determine the contents of total flavonoids and total phenolic acids in extraction layers, and the bioactive layers was screened through anti - oxidative activity in vitro. The Waters ACQUITY UPLC system and a Waters ACQUITY UPLC BEH C18 column (2.0 mm × 150 mm, 5 μm) were used to identify the ingredients. And anti-oxidative ingredients were screened by off-line UPLC-QTOF-MS/MS-free radical scavenging. The ameliorative role of it was further evaluated in a high-fat, streptozotocin-induced type 2 diabetic rat model and the study was carried out on NADPH oxidase (PDB ID: 2CDU) by molecular docking.
RESULTS:
Combined with the results of activity screening in vitro, the anti - oxidative part was identified as the ethyl acetate layer. A total of 24 chemical constituents were identified by liquid chromatography-mass spectrometry in the ethyl acetate layer and 13 main anti-oxidative active constituents were preliminarily screened out through off-line UPLC-QTOF-MS/MS-free radical scavenging. In vivo experiments showed that flowers of X. sorbifolia could significantly reduce the blood glucose level of diabetic mice and alleviate liver cell damage. Based on the results of docking analysis related to the identified phytocompounds and oxidase which involved in type 2 diabetes, quercetin 3-O-rutinoside, kaempferol-3-O-rhamnoside, isorhamnetin-3-O-glucoside, and isoquercitrin showed a better inhibitory profile.
CONCLUSION
The ethyl acetate layer was rich in flavonoids and phenolic acids and had significant anti-oxidant activity, which could prevent hyperglycemia. This observed activity profile suggested X. sorbifolia flowers as a promising new source of tea to develop alternative natural anti-diabetic products with a high safety margin.


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