1.Action Mechanism of Resolving Dampness and Phlegm of Pinelliae Rhizoma Praeparatum Based on Interconnection Between Lung and Large Intestine
Xingbao TAO ; Chentao ZHAO ; Xiaofu ZHU ; Hao WU ; Jun HE ; Weiguo CAO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):122-131
ObjectiveTo investigate the effects of Pinelliae Rhizoma Praeparatum (PRP) on lung tissue, gut microbiota, and short-chain fatty acid (SCFA) metabolism in a model of mice with cold fluid retention in the lung and explore its mechanism of action in resolving dampness and phlegm based on the interconnection between the lung and large intestine. MethodsFifty female ICR mice were randomly divided into a normal group, model group, positive control group (Xiaoqinglong granules, 6.5 g·kg-1), and high-dose and low-dose PRP decoction groups (3.0, 1.5 g·kg-1), with 10 mice in each group. A model of mice with cold fluid retention in the lung was established using ovalbumin (OVA) sensitization combined with cold-water immersion. Drug interventions were conducted from day 18 to day 33 for 15 consecutive days. The airway resistance value of the mice was measured using a non-invasive pulmonary function analyzer. Phlegm-resolving effects were evaluated via a microplate reader. Eosinophil and neutrophil counts in bronchoalveolar lavage fluid (BALF) were analyzed using an automated hematology analyzer. Serum levels of total immunoglobulin E (IgE), interferon-γ (IFN-γ), interleukin-4 (IL-4), and BALF levels of interleukin-6 (IL-6) and interleukin-8 (IL-8) were quantified by enzyme-linked immunosorbent assay (ELISA). Lung histopathology was assessed using hematoxylin-eosin (HE) staining. Immunohistochemistry (IHC) was employed to detect mucin 5AC (MUC5AC) and aquaporin 5 (AQP5) protein expression in lung tissue. Gut microbiota composition was analyzed via agarose gel electrophoresis, and fecal SCFA levels were measured by gas chromatography-mass spectrometry (GC-MS). ResultsCompared with the normal group, the model group exhibited significantly increased airway resistance value (RI) (P<0.05), elevated eosinophil and neutrophil counts and IL-6 and IL-8 levels in BALF (P<0.05), increased serum IgE and IL-4 levels (P<0.05), with reduced IFN-γ levels (P<0.05). It also showed thickened bronchial walls, widened alveolar septa, narrowed lumens, and mucus plugs in lung tissue, upregulated MUC5AC protein expression and downregulated AQP5 protein expression (P<0.05), decreased relative abundance of beneficial gut microbiota (Firmicutes, Clostridia, Clostridiales, Lactobacillaceae, and Lactobacillus), and increased abundance of harmful microbiota (Bacteroidetes, Bacteroidia, Bacteroidales, Muribaculaceae, and Muribaculum). In addition, the model group presented reduced fecal SCFA levels (acetate, propionate, and butyrate) (P<0.05). After the intervention of PRP decoction, compared to the model group, all drug administration groups showed decreased RI (P<0.05), increased phenol red excretion, declined eosinophil and neutrophil counts and IL-6, IL-8, IgE, and IL-4 levels (P<0.05), and improved IFN-γ levels (P<0.05) and lung pathology improved. The MUC5AC protein expression decreased (P<0.05), and the AQP5 protein expression increased (P<0.05). The disorder of gut microbiota was improved, and the diversity of gut microbiota was restored, with a significantly increased relative abundance ratio of beneficial microbiota (P<0.05) and a significantly reduced relative abundance ratio of harmful microbiota (P<0.05). The SCFA levels (acetate, propionate, and butyrate) increased (P<0.05). The efficacy indicators of serum inflammatory factors (IgE, IL-4, and IFN-γ), phlegm-resolving effect, airway resistance, total pathological score, and the protein expression of MUC5AC and AQP5 were correlated with gut microbiota and SCFAs. ConclusionPRP decoction alleviates cold-phlegm syndrome by modulating the gut-lung axis, promoting beneficial gut microbiota, enhancing SCFA production, restoring the balance of gut microbiota, and suppressing respiratory inflammation. This study provides novel insights into the TCM theory of interconnection between the lung and large intestine.
2.Action Mechanism of Resolving Dampness and Phlegm of Pinelliae Rhizoma Praeparatum Based on Interconnection Between Lung and Large Intestine
Xingbao TAO ; Chentao ZHAO ; Xiaofu ZHU ; Hao WU ; Jun HE ; Weiguo CAO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):122-131
ObjectiveTo investigate the effects of Pinelliae Rhizoma Praeparatum (PRP) on lung tissue, gut microbiota, and short-chain fatty acid (SCFA) metabolism in a model of mice with cold fluid retention in the lung and explore its mechanism of action in resolving dampness and phlegm based on the interconnection between the lung and large intestine. MethodsFifty female ICR mice were randomly divided into a normal group, model group, positive control group (Xiaoqinglong granules, 6.5 g·kg-1), and high-dose and low-dose PRP decoction groups (3.0, 1.5 g·kg-1), with 10 mice in each group. A model of mice with cold fluid retention in the lung was established using ovalbumin (OVA) sensitization combined with cold-water immersion. Drug interventions were conducted from day 18 to day 33 for 15 consecutive days. The airway resistance value of the mice was measured using a non-invasive pulmonary function analyzer. Phlegm-resolving effects were evaluated via a microplate reader. Eosinophil and neutrophil counts in bronchoalveolar lavage fluid (BALF) were analyzed using an automated hematology analyzer. Serum levels of total immunoglobulin E (IgE), interferon-γ (IFN-γ), interleukin-4 (IL-4), and BALF levels of interleukin-6 (IL-6) and interleukin-8 (IL-8) were quantified by enzyme-linked immunosorbent assay (ELISA). Lung histopathology was assessed using hematoxylin-eosin (HE) staining. Immunohistochemistry (IHC) was employed to detect mucin 5AC (MUC5AC) and aquaporin 5 (AQP5) protein expression in lung tissue. Gut microbiota composition was analyzed via agarose gel electrophoresis, and fecal SCFA levels were measured by gas chromatography-mass spectrometry (GC-MS). ResultsCompared with the normal group, the model group exhibited significantly increased airway resistance value (RI) (P<0.05), elevated eosinophil and neutrophil counts and IL-6 and IL-8 levels in BALF (P<0.05), increased serum IgE and IL-4 levels (P<0.05), with reduced IFN-γ levels (P<0.05). It also showed thickened bronchial walls, widened alveolar septa, narrowed lumens, and mucus plugs in lung tissue, upregulated MUC5AC protein expression and downregulated AQP5 protein expression (P<0.05), decreased relative abundance of beneficial gut microbiota (Firmicutes, Clostridia, Clostridiales, Lactobacillaceae, and Lactobacillus), and increased abundance of harmful microbiota (Bacteroidetes, Bacteroidia, Bacteroidales, Muribaculaceae, and Muribaculum). In addition, the model group presented reduced fecal SCFA levels (acetate, propionate, and butyrate) (P<0.05). After the intervention of PRP decoction, compared to the model group, all drug administration groups showed decreased RI (P<0.05), increased phenol red excretion, declined eosinophil and neutrophil counts and IL-6, IL-8, IgE, and IL-4 levels (P<0.05), and improved IFN-γ levels (P<0.05) and lung pathology improved. The MUC5AC protein expression decreased (P<0.05), and the AQP5 protein expression increased (P<0.05). The disorder of gut microbiota was improved, and the diversity of gut microbiota was restored, with a significantly increased relative abundance ratio of beneficial microbiota (P<0.05) and a significantly reduced relative abundance ratio of harmful microbiota (P<0.05). The SCFA levels (acetate, propionate, and butyrate) increased (P<0.05). The efficacy indicators of serum inflammatory factors (IgE, IL-4, and IFN-γ), phlegm-resolving effect, airway resistance, total pathological score, and the protein expression of MUC5AC and AQP5 were correlated with gut microbiota and SCFAs. ConclusionPRP decoction alleviates cold-phlegm syndrome by modulating the gut-lung axis, promoting beneficial gut microbiota, enhancing SCFA production, restoring the balance of gut microbiota, and suppressing respiratory inflammation. This study provides novel insights into the TCM theory of interconnection between the lung and large intestine.
3.Study on anti-inflammatory components from Melicope pteleifolia.
He-Lin WEI ; Tao WANG ; Jing-Jing SUN ; Zhi-Qiang HUANG ; Yi-Ze XIAO ; Jun LI ; Peng-Fei TU
China Journal of Chinese Materia Medica 2025;50(15):4275-4283
Melicope pteleifolia is a plant belonging to the Melicope genus of the Rutaceae family. Known for a bitter taste and cold nature, its stems and tender branches with leaves possess properties of clearing heat, detoxifying, dispelling wind, and removing dampness and can be used to treat sore throat, malaria, jaundice hepatitis, rheumatic bone pain, eczema, dermatitis, and sores and ulcers. In this study, 19 compounds were isolated from the chloroform and n-butanol extracts of M. pteleifolia leaves by using liquid chromatography-mass spectrometry(LC-MS) and proton nuclear magnetic resonance(~1H-NMR)-guided separation techniques. The compounds were identified as isoleptonol(1), leptaones B-E(2-5), friedelin(6), evodionol(7), ethyl p-hydroxybenzoate(8), litseachromolaevane A(9), quercetin-7,3',4'-trimethyl ether(10), kokusaginin(11), 8-(1-hydroxyethyl)-5,6,7-trimethoxy-2,2-dimethyl-2H-1-benzopyran(12), ethyl p-hydroxycinnamate(13), 3-hydroxy-9-methyl-6H-benzo\[c\]chromen-6-one(14), agrimonolide(15), 7-hydroxycoumarin(16), scopoletin(17), isoscutellarein(18), and agrimonolide 6-O-glucoside(19). Among these, the new compounds included one chromene and four meroterpenoid(1-5). The anti-inflammatory activities of the newly identified compounds 1-5 were screened in vitro, showing that the five compounds(1-5) exhibited inhibitory effects on nitric oxide(NO) production in BV2 cells induced by lipopolysaccharide(LPS)/interferon(IFN)-γ, with IC_(50) values ranging from 12.25 to 36.48 μmol·L~(-1).
Anti-Inflammatory Agents/isolation & purification*
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Mice
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Animals
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Rutaceae/chemistry*
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Drugs, Chinese Herbal/isolation & purification*
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Macrophages/immunology*
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Nitric Oxide/immunology*
4.Tibial transverse transport combined with antibiotic-loaded bone cement for the treatment of diabetic foot ulcer.
Wen CHEN ; Li TIAN ; Tao LIU ; Zhi-Jun HE ; Yan LI ; Jin-Peng LI
China Journal of Orthopaedics and Traumatology 2025;38(9):878-883
OBJECTIVE:
To compare clinical efficacy of tibial transverse transport(TTT) combined with antibiotic-loaded bone cement (ABC) and TTT in treating diabetic foot ulcer (DFU).
METHODS:
A retrospective analysis was conducted on 60 patients with DFU treated from January 2019 to January 2023. They were divided into bone cement group and bone transfer group according to different treatment methods, with 30 patients in each group. There were 20 males and 10 females in bone cement group, aged from 61 to 76 years old with an average of (68.15±4.85) years old;the course of ulcer disease ranged from 7 to 28 months with an average of (15.28±5.52) months;16 patients were grade 3 and 14 patients were grade 4 according to Wagner classification; TTT combined with ABC treatment was performed. There were 22 males and 8 females in bone transfer group, aged from 60 to 75 years old with average of (67.85±4.62) years old;the course of ulcer disease ranged from 6 to 29 months with an average of (14.35±5.21) months;17 patients were grade 3 and 13 patients were grade 4 according to Wagner classification;TTT was performed. The control time of wound infection, duration of antibiotic use, frequency of debridement, weight-bearing time of the affected limb, healing time of ulcer surface and recurrence of infection were compared between two groups. Visual analogue scale (VAS) and ankle brachial index (ABI) between two groups was compared before operation and 2 and 6 months after operation.
RESULTS:
Sixty patients were followed up for 12 to 24 months with average of (17.24±4.42) months. The control time of wound infection, duration of antibiotic use, frequency of debridement, weight-bearing time of the affected limb, and healing time of ulcer surface in bone cement group were (11.02±2.14) days, (12.7±3.5) days, (1.2±0.4) times, (90.02±2.75) days, and (2.32±3.45) months, respectively;while in bone transfer groups were (20.14±3.15) days, (20.4±4.5) days, (2.2±0.8) times, (106.64±8.35) days, and (4.53±3.12) months respectively; bone cement group was superior to bone transfer group, and the differences were statistically significant(P<0.05). Comparisons of VAS and ABI before and after treatment between two groups showed preoperative VAS and ABI in bone cement group were (6.71±0.73) points and (0.25±0.04) respectively, and those in bone transfer group were (6.87±0.17) points and (0.27±0.03) respectively. At 2 months after operation, VAS and ABI in bone cement group were (3.71±0.47) points and (0.61±0.03) respectively, and those in bone transfer group were (3.79±0.70) points and (0.59±0.05) respectively;postoperative VAS and ABI at 6 months in bone cement group were (2.26±0.13) points and (0.80±0.05) respectively, and those in bone transfer group were (2.57±0.17) points and (0.79±0.04) respectively;postoperative VAS and ABI between groups were improved at each time points compared with those of before operation (P<0.05). In bone cement group, there were 2 patients with ulcer recurrence and 1 patient with gangrene;while in bone transfer group, 5 patients with recurrence of infection, 2 patients with recurrence of ulcer and 1 patient with gangrene;the recurrence rate of infection in bone cement group were lower than that in bone transfer group (P<0.05).
CONCLUSION
The combination of TTT and ABC in treating DFU has a good therapeutic effect, which could be shorten the infection control time, ulcer healing time and antibiotic use time, effectively relieve pain, reduce the recurrence rate of infection and improve the quality of life of patients.
Humans
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Male
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Female
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Aged
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Bone Cements/therapeutic use*
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Middle Aged
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Anti-Bacterial Agents/therapeutic use*
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Diabetic Foot/therapy*
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Retrospective Studies
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Tibia/surgery*
5.Pharmacological actions of the bioactive compounds of Epimedium on the male reproductive system: current status and future perspective.
Song-Po LIU ; Yun-Fei LI ; Dan ZHANG ; Chun-Yang LI ; Xiao-Fang DAI ; Dong-Feng LAN ; Ji CAI ; He ZHOU ; Tao SONG ; Yan-Yu ZHAO ; Zhi-Xu HE ; Jun TAN ; Ji-Dong ZHANG
Asian Journal of Andrology 2025;27(1):20-29
Compounds isolated from Epimedium include the total flavonoids of Epimedium , icariin, and its metabolites (icaritin, icariside I, and icariside II), which have similar molecular structures. Modern pharmacological research and clinical practice have proved that Epimedium and its active components have a wide range of pharmacological effects, especially in improving sexual function, hormone regulation, anti-osteoporosis, immune function regulation, anti-oxidation, and anti-tumor activity. To date, we still need a comprehensive source of knowledge about the pharmacological effects of Epimedium and its bioactive compounds on the male reproductive system. However, their actions in other tissues have been reviewed in recent years. This review critically focuses on the Epimedium , its bioactive compounds, and the biochemical and molecular mechanisms that modulate vital pathways associated with the male reproductive system. Such intrinsic knowledge will significantly further studies on the Epimedium and its bioactive compounds that protect the male reproductive system and provide some guidances for clinical treatment of related male reproductive disorders.
Male
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Epimedium/chemistry*
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Humans
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Genitalia, Male/drug effects*
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Flavonoids/therapeutic use*
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Animals
6.Association of Body Mass Index with All-Cause Mortality and Cause-Specific Mortality in Rural China: 10-Year Follow-up of a Population-Based Multicenter Prospective Study.
Juan Juan HUANG ; Yuan Zhi DI ; Ling Yu SHEN ; Jian Guo LIANG ; Jiang DU ; Xue Fang CAO ; Wei Tao DUAN ; Ai Wei HE ; Jun LIANG ; Li Mei ZHU ; Zi Sen LIU ; Fang LIU ; Shu Min YANG ; Zu Hui XU ; Cheng CHEN ; Bin ZHANG ; Jiao Xia YAN ; Yan Chun LIANG ; Rong LIU ; Tao ZHU ; Hong Zhi LI ; Fei SHEN ; Bo Xuan FENG ; Yi Jun HE ; Zi Han LI ; Ya Qi ZHAO ; Tong Lei GUO ; Li Qiong BAI ; Wei LU ; Qi JIN ; Lei GAO ; He Nan XIN
Biomedical and Environmental Sciences 2025;38(10):1179-1193
OBJECTIVE:
This study aimed to explore the association between body mass index (BMI) and mortality based on the 10-year population-based multicenter prospective study.
METHODS:
A general population-based multicenter prospective study was conducted at four sites in rural China between 2013 and 2023. Multivariate Cox proportional hazards models and restricted cubic spline analyses were used to assess the association between BMI and mortality. Stratified analyses were performed based on the individual characteristics of the participants.
RESULTS:
Overall, 19,107 participants with a sum of 163,095 person-years were included and 1,910 participants died. The underweight (< 18.5 kg/m 2) presented an increase in all-cause mortality (adjusted hazards ratio [ aHR] = 2.00, 95% confidence interval [ CI]: 1.66-2.41), while overweight (≥ 24.0 to < 28.0 kg/m 2) and obesity (≥ 28.0 kg/m 2) presented a decrease with an aHR of 0.61 (95% CI: 0.52-0.73) and 0.51 (95% CI: 0.37-0.70), respectively. Overweight ( aHR = 0.76, 95% CI: 0.67-0.86) and mild obesity ( aHR = 0.72, 95% CI: 0.59-0.87) had a positive impact on mortality in people older than 60 years. All-cause mortality decreased rapidly until reaching a BMI of 25.7 kg/m 2 ( aHR = 0.95, 95% CI: 0.92-0.98) and increased slightly above that value, indicating a U-shaped association. The beneficial impact of being overweight on mortality was robust in most subgroups and sensitivity analyses.
CONCLUSION
This study provides additional evidence that overweight and mild obesity may be inversely related to the risk of death in individuals older than 60 years. Therefore, it is essential to consider age differences when formulating health and weight management strategies.
Humans
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Body Mass Index
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China/epidemiology*
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Male
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Female
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Middle Aged
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Prospective Studies
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Rural Population/statistics & numerical data*
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Aged
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Follow-Up Studies
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Adult
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Mortality
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Cause of Death
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Obesity/mortality*
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Overweight/mortality*
7.Multidisciplinary expert consensus on weight management for overweight and obese children and adolescents based on healthy lifestyle
HONG Ping, MA Yuguo, TAO Fangbiao, XU Yajun, ZHANG Qian, HU Liang, WEI Gaoxia, YANG Yuexin, QIAN Junwei, HOU Xiao, ZHANG Yimin, SUN Tingting, XI Bo, DONG Xiaosheng, MA Jun, SONG Yi, WANG Haijun, HE Gang, CHEN Runsen, LIU Jingmin, HUANG Zhijian, HU Guopeng, QIAN Jinghua, BAO Ke, LI Xuemei, ZHU Dan, FENG Junpeng, SHA Mo, Chinese Association for Student Nutrition & ; Health Promotion, Key Laboratory of Sports and Physical Fitness of the Ministry of Education,〖JZ〗 Engineering Research Center of Ministry of Education for Key Core Technical Integration System and Equipment,〖JZ〗 Key Laboratory of Exercise Rehabilitation Science of the Ministry of Education
Chinese Journal of School Health 2025;46(12):1673-1680
Abstract
In recent years, the prevalence of overweight and obesity among children and adolescents has risen rapidly, posing a serious threat to their physical and mental health. To provide scientific, systematic, and standardized weight management guidance for overweight and obese children and adolescents, the study focuses on the core concept of healthy lifestyle intervention, integrates multidisciplinary expert opinions and research findings,and proposes a comprehensive multidisciplinary intervention framework covering scientific exercise intervention, precise nutrition and diet, optimized sleep management, and standardized psychological support. It calls for the establishment of a multi agent collaborative management mechanism led by the government, implemented by families, fostered by schools, initiated by individuals, optimized by communities, reinforced by healthcare, and coordinated by multiple stakeholders. Emphasizing a child and adolescent centered approach, the consensus advocates for comprehensive, multi level, and personalized guidance strategies to promote the internalization and maintenance of a healthy lifestyle. It serves as a reference and provides recommendations for the effective prevention and control of overweight and obesity, and enhancing the health level of children and adolescents.
8.Dual effects of branched-chain amino acid on differentiation of 3T3-L1 preadipocytes through Stat3 pathway
Xinghua Cai ; Jie Gao ; Yuanying Xu ; Huihui Zhang ; Rouzi Maireyanmu ; Wenjun Sha ; Jun Lu ; Tao Lei
Acta Universitatis Medicinalis Anhui 2025;60(3):494-501
Objective :
To investigate the effects of branched-chain amino acid(BCAA) on the differentiation of 3T3-L1 preadipocytes and its potential mechanism.
Methods :
3T3-L1 preadipocytes were divided into the Control, differentiation medium(DM), low-concentration BCAA, and high-concentration BCAA groups. A CCK-8 assay was utilized to evaluate pre-adipocyte survival under various BCAA concentrations. Oil-red O staining was used to observe the formation of lipid droplets in adipocytes. Intracellular triglyceride(TG) and total cholesterol(TC) were detected by enzymatic method. RT-qPCR and Western blot were used to detect the mRNA and protein expression of Stat3 and adipocyte differentiation-related genes.
Results :
CCK-8 results showed that the viability of 3T3-L1 cells was not affected when the BCAA concentration was ≤ 10 mmol/L. Compared with the DM group, the low-concentration BCAA groups(0.5 and 1.0 mmol/L) had significantly larger intracellular lipid droplets, increased number of lipid droplets, and elevated levels of the intracellular TC(0.88vs0.68 mmol/g; 0.83vs0.68 mmol/g,P<0.01) and TG(0.77vs0.40 mmol/g; 0.62vs0.40 mmol/g,P<0.01). Nevertheless, the cell differentiation in the high-concentration group(5.0 and 10.0 mmol/L) significantly decreased compared with that in the DM group. Further, levels of PPARγ, C/EBPα, Adiponectin, and FABP4 mRNA and protein expression significantly increased in the low-concentration group, but significantly decreased in the high-concentration group than that in the DM group(P<0.01). In addition, low concentrations of BCAA promoted stat3 phosphorylation, while high concentrations inhibited its phosphorylation(P<0.01).
Conclusion
BCAA have a dual role in regulating the differentiation of preadipocytes through Stat3, i.e. low concentrations of BCAA induce cell differentiation by promoting Stat3 phosphorylation; whereas high concentrations of BCAA inhibit Stat3 phosphorylation and cell differentiation.
9.Internal iliac artery ligation as a damage control method in hemodynamically unstable pelvic fractures: A systematic review of the literature
Hui LI ; Tao AI ; Guang-Bin HUANG ; Jun YANG ; Gong-Bin WEI ; Jin-Mou GAO ; Ping HE ; Xue-Mei CAO ; Ding-Yuan DU
Chinese Journal of Traumatology 2024;27(5):288-294
Purpose::Internal iliac artery ligation (IIAL) has been used as a damage control procedure to treat hemodynamically unstable pelvic fracture for many years. However, there is ongoing debate regarding the effectiveness and safety of this hemostatic method. Therefore, we performed a systematic literature review to assess the efficacy and safety of IIAL for pelvic fracture hemostasis.Methods::Three major databases, PubMed, Embase, and Google Scholar, were searched to screen eligible original studies published in English journals. Two reviewers independently read the titles, abstracts, and full texts of all literature. Articles were included if they reported the use and effects of IIAL.Results::A total of 171 articles were initially identified, with 22 fully meeting the inclusion criteria. Among the analyzed cases, up to 66.7% of patients had associated abdominal and pelvic organ injuries, with the urethra being the most frequently injured organ, followed by the bowel. The outcomes of IIAL for achieving hemostasis in pelvic fractures were found to be satisfactory, with an effective rate of 80%. Hemorrhagic shock was the leading cause of death, followed by craniocerebral injury. Notably, no reports of ischemic complications involving the pelvic organs due to IIAL were found.Conclusion::IIAL has a good effect in treating hemodynamically unstable pelvic fracture without the risk of pelvic organ ischemia. This procedure should be considered a priority for hemodynamically unstable pelvic fracture patients with abdominal organ injuries.
10.MRI-based habitat radiomics analysis for identifying molecular subtypes of endometrial cancer:a feasible study from two institutions
Wen-Tao JIN ; Tian-Ping WANG ; Xiao-Jun CHEN ; Guo-Fu ZHANG ; Hai-Ming LI ; He ZHANG
Fudan University Journal of Medical Sciences 2024;51(6):890-899
Objective To develop an MRI-based habitat radiomics model for the preoperative prediction of endometrial cancer(EC)molecular subtypes.Methods Patients with pathologically proven EC from two hospitals were included in the training(n=270)and testing(n=70)cohorts.All patients had preoperative MRI and histological and molecular diagnoses.First,the tumor was divided into habitat subregions based on diffusion-weighted imaging(DWI)and contrast-enhanced(CE)images.Subsequently,habitat radiomic features were extracted from different subregions of T1-weighted imaging(T1WI),T2-weighted imaging(T2WI),DWI,and CE images.Three machine learning classifiers,including logistic regression,support vector machines,and random forests,were applied to develop predictive models for p53-abnormal endometrial cancer,with model performance validated.The model demonstrating the best overall predictive performance was selected as the habitat radiomics model.Using the same procedure,a whole-region radiomics model based on T1WI,T2WI,DWI,and CE sequences and a clinical model were constructed.The performance of the models was evaluated using receiver operating characteristic curves,and DeLong's test was employed to compare differences between the models.Decision curve analysis was used to assess the clinical benefits of the models'application.Results After feature selection,eight habitat radiomic features were retained to construct the habitat radiomics model,ten features for the whole-region radiomics model,and three clinical features for the clinical model.The habitat radiomics model achieved the highest area under the curve(AUC),with 0.855(0.788-0.922)in the training cohort and 0.769(0.631-0.907)in the testing cohort.DeLong's test showed that the habitat radiomics model outperformed the whole-region radiomics model in the training cohort(P=0.001),but there was no significant difference in the testing cohort(P=0.543).In both cohorts,the habitat radiomics model outperformed the clinical model(P=0.007,training cohort;P=0.038,testing cohort).Decision curve analysis(DCA)demonstrated that this model provided clinical benefit for diagnosis within a threshold probability range of approximately 0.2-0.8.Conclusion The MRI-based habitat radiomics model can accurately predict p53-abnormal EC,outperforming both the whole-region radiomics model and the clinical model,and is useful for the non-invasive molecular subtyping of endometrial cancer before surgery.


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