1.Factors affecting benefit finding among young and middle-aged patients with type 2 diabetes mellitus
WU Chenghui ; PENG Yanhong ; ZHANG Ke ; ZHU Weiye ; DENG Liang ; TAN Lingling ; QU Dandan ; MI Qiuxiang
Journal of Preventive Medicine 2026;38(1):31-35
Objective:
To investigate the current status of benefit finding among young and middle-aged patients with type 2 diabetes mellitus (T2DM) and analyze its influencing factors, so as to provide a reference for improving the level of benefit finding in this population.
Methods:
From November 2022 to May 2023, young and middle-aged patients with T2DM aged 18-59 years hospitalized in the endocrinology departments of 2 tertiary hospitals in Hengyang City, Hunan Province were selected as survey subjects by a convenience sampling method. Basic demographic information was collected using a general questionnaire survey. Benefit finding, resourcefulness, and stigma were evaluated using the Benefit Finding Scale, the Chinese Version of the Resourcefulness Scale, and the Type 2 Diabetes Stigma Assessment Scale, respectively. A multiple linear regression model was used to analyze the influencing factors of benefit finding among young and middle-aged patients with T2DM.
Results:
A total of 305 young and middle-aged patients with T2DM were investigated, including 222 males (72.79%) and 83 females (27.21%). There were 231 cases aged 45-59 years, accounting for 75.74%. The scores for benefit finding, resourcefulness, and stigma were (42.86±6.06), (75.12±11.30), and (41.20±10.10), respectively. Multiple linear regression analysis showed that young and middle-aged patients with T2DM who were male (β′=0.088), aged 18-<45 years (β′=0.083), absence of diabetes complications (β′=0.124), and had higher resourcefulness scores (β′=0.679) had higher levels of benefit finding, while patients with higher stigma scores (β′=-0.097) had lower levels of benefit finding.
Conclusion
The level of benefit finding among young and middle-aged patients with T2DM was moderate, and was related to gender, age, diabetes complications, resourcefulness, and stigma.
2.Mechanisms of Bushen Tongluo Jiangzhuo Prescription in Improving Renal Fibrosis in Rats with Chronic Kidney Disease Based on PI3K/Akt/mTOR Signaling Pathway
Xincui BAO ; Baosheng ZHAO ; Lingling QIN ; Haiyan WANG ; Jing YANG ; You WANG ; Lijia WU ; Yujin LI ; Ming GAO ; Cuiyan LYU ; Tonghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(6):100-108
ObjectiveTo investigate the mechanisms by which Bushen Tongluo Jiangzhuo prescription improves renal fibrosis in rats with chronic kidney disease (CKD) through the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signaling pathway. MethodsSeventy specific pathogen-free (SPF) Sprague-Dawley (SD) rats were randomly divided into a control group (n=15) and a modeling group (n=55). Rats in the modeling group were administered a 2.5% adenine suspension at a dose of 200 mg·kg-1·d-1 by gavage for 4 weeks to establish a CKD model. Successfully modeled rats were randomly divided into a model group, an irbesartan group (20.25 mg·kg-1·d-1), and Bushen Tongluo Jiangzhuo prescription low-, medium-, and high-dose groups (5.82, 11.64, and 23.28 g·kg-1·d-1, respectively), with 10 rats in each group. Each group was administered an equal volume of physiological saline, the corresponding concentration of irbesartan, or Bushen Tongluo Jiangzhuo prescription by gavage for 12 weeks. Body weight and renal function indices were dynamically monitored. Serum creatinine (SCr), blood urea nitrogen (BUN), urine albumin-to-creatinine ratio (ACR), 24-hour urinary total protein (24 hUTP), aspartate aminotransferase (AST), alanine aminotransferase (ALT), interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) levels were measured using an automatic biochemical analyzer. Renal histopathological changes were observed by hematoxylin-eosin (HE) and Masson staining. Immunohistochemistry (IHC) was used to detect the expression of PI3K, Akt, phosphorylated Akt (p-Akt), and mTOR in renal tissues. Western blot was performed to assess the protein expression of PI3K, p-Akt, Akt, phosphorylated mTOR (p-mTOR), and mTOR in renal tissues. Real-time quantitative polymerase chain reaction (Real-time PCR) was used to determine the mRNA expression levels of PI3K, Akt, and mTOR in renal tissues. ResultsCompared with the model group, rats in the irbesartan group and the low-, medium-, and high-dose Bushen Tongluo Jiangzhuo prescription groups showed significantly decreased levels of SCr, BUN, ACR, 24 hUTP, IL-1β, IL-6, and TNF-α (P<0.01). AST levels were significantly increased (P<0.01), while no significant difference was observed in ALT levels. Histopathological examination revealed that, compared with the model group, renal tubular epithelial cell edema and necrosis and Bowman's capsule dilation were alleviated, inflammatory cell infiltration was reduced, and interstitial and glomerular fibrosis was markedly improved in all treatment groups, with the most pronounced effect observed in the high-dose Bushen Tongluo Jiangzhuo prescription group. Real-time PCR results showed that mRNA expression levels of PI3K, Akt, and mTOR were significantly downregulated in the high-dose group (P<0.01). IHC results demonstrated that PI3K and p-Akt expression levels in renal tissues were significantly decreased in the high-dose group (P<0.01). Western blot analysis further confirmed that the expression levels of PI3K, p-Akt/Akt, and p-mTOR/mTOR were significantly reduced in the high-dose group (P<0.01). ConclusionBushen Tongluo Jiangzhuo prescription improves renal function indices in CKD rats, reduces collagen deposition in renal tissues, and decreases serum inflammatory factor levels. Its protective effect on renal function may be achieved by activating autophagy through downregulation of the PI3K/Akt/mTOR signaling pathway, thereby alleviating renal fibrosis.
3.Effect of Shengui Jiangtang Formula on Glucose and Lipid Metabolism in Type 2 Diabetic db/db Mice via PI3K/Akt/FoxO1 Signaling Pathway and Underlying Mechanisms
Zairan WANG ; Yifei ZHU ; Jiahe TANG ; Lingling QIN ; Lili WU ; Tonghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):42-51
ObjectiveTo investigate the effects of Shengui Jiangtang Formula on insulin resistance and glucose-lipid metabolism in spontaneous type 2 diabetic db/db mice based on the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/forkhead box protein O1 (FoxO1) signaling pathway, and to provide theoretical foundation for its clinical application through fundamental experiments. MethodsA randomized controlled design was employed in this study. Thirty spontaneous type 2 diabetic db/db mice meeting the inclusion criteria (fasting blood glucose >7.0 mmol·L-1 and random blood glucose on a different day≥11.1 mmol·L-1) were selected as the subjects. After stratified block randomization by body weight and blood glucose levels, they were randomly assigned to a model group, a metformin group, and a Shengui Jiangtang formula group, with n=10 per group. Ten db/m mice were used as the normal group. During the 5-week intervention, general indicators (including general condition, fasting blood glucose (FBG), body weight, and food intake) were recorded weekly. An oral glucose tolerance test (OGTT) was performed at week 5. After 5 weeks, serum was collected to measure glucose-lipid metabolism parameters. Liver tissues were analyzed as follows: Histopathology was observed through hematoxylin and eosin (HE) staining, periodic acid-Schiff (PAS) staining, and Oil red O staining. The expression of proteins and genes related to the PI3K/Akt/FoxO1 signaling pathway was quantitatively analyzed using Western blotting (Western blot) and real-time quantitative polymerase chain reaction (Real-time PCR). ResultsGeneral observations: The mice in the normal group were generally healthy, exhibited agile responses and had smooth and glossy fur. Compared with the normal group, the mice in the model group displayed typical symptoms of polydipsia, polyphagia, and polyuria, along with listlessness and rough fur. Their food intake, initial body weight, liver weight, and liver index were all significantly higher than those in the normal group (P<0.01). After 5 weeks of drug intervention, neither the Shengui Jiangtang Formula group nor the metformin group significantly affected the food intake of the model mice. Compared with the model group, no statistically significant difference was observed in liver weight or liver index in the Shengui Jiangtang formula group. Serum biochemical indicators: Compared with the normal group, the model group showed significantly elevated levels of FBG, fasting insulin, homeostatic model assessment of insulin resistance (HOMA-IR), glycosylated serum protein, and blood lipids. After drug intervention, compared with the model group, the Shengui Jiangtang formula group significantly reduced FBG in the model mice (P<0.01). The blood glucose levels at all time points during the OGTT in the Shengui Jiangtang Formula group were lower than those in the model group, with statistically significant differences in the 0 min blood glucose and the area under the curve for glucose compared to the model group (P<0.05). Furthermore, the formula significantly reduced fasting insulin levels, HOMA-IR, and glycosylated serum protein levels (P<0.05). It also showed a tendency to decrease blood lipids, liver enzymes (aspartate aminotransferase, alanine aminotransferase), and blood urea nitrogen levels, and a tendency to increase creatinine levels, although these differences were not statistically significant. Liver histomorphology: HE staining indicated that Shengui Jiangtang formula improved the morphological structure of hepatocytes and attenuated steatosis in diabetic mice. Liver PAS staining showed that it increased hepatic glycogen content and promoted hepatic glycogen synthesis in diabetic mice. Oil red O staining demonstrated that it reduced lipid deposition within hepatocytes. Western blot: Compared with the normal group, the model group showed decreased protein expression of PI3K, Akt, p-Akt, and p-FoxO1, and increased FoxO1 protein expression. Compared with the model group, both the metformin and Shengui Jiangtang Formula groups showed increased protein expression of PI3K, Akt, p-Akt, and p-FoxO1, and decreased FoxO1 protein expression. Real-time PCR: Compared with the normal group, the mRNA expression of PI3K and Akt was downregulated (P<0.05), and the mRNA expression of FoxO1 was downregulated (P<0.05) in the model group. ConclusionShengui Jiangtang Formula can improve insulin resistance and glucose-lipid metabolic disorders in db/db mice. It alleviates hepatic steatosis, promotes hepatic glycogen synthesis, and reduces lipid deposition in these mice. The mechanism by which Shengui Jiangtang Formula improves insulin resistance may be associated with the PI3K/Akt/FoxO1 signaling pathway.
4.Research Progress of Traditional Chinese Medicine in Improving Diabetic Retinopathy Based on Nrf2 Signaling Pathway
Xueqing LIU ; Xinyu ZHONG ; Tingting WANG ; Ning WANG ; Man LIU ; Li WU ; Lili WU ; Lingling QIN ; Tonghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):69-78
Diabetic retinopathy (DR) is a microvascular complication of diabetes and one of its most common complications. Prolonged hyperglycemia induces oxidative stress, inflammatory responses, apoptosis, and pathological angiogenesis, ultimately disrupting the blood-retinal barrier(BRB) and leading to visual impairment or even blindness. Recent studies show that the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway plays an important role in the development of DR's pathological changes. Meanwhile, Chinese herbal monomers have been shown to modulate the Nrf2 signaling pathway, thereby intervening in the development of DR. In terms of inhibiting oxidative stress, saponin compounds such as platycodin-D and ginsenoside Rb1 downregulate the expression of malondialdehyde (MDA), thereby ameliorating retinal oxidative stress. Flavonoids such as total flavonoids from Pueraria lobata flower and puerarin upregulate the expression of superoxide dismutase (SOD) and glutathione peroxidase (GPx), effectively clearing lipid peroxides. Regarding the suppression of inflammation, phenolic compounds like resveratrol and chlorogenic acid inhibit the nuclear factor kappa B (NF-κB) pathway, reducing the release of tumor necrosis factor-alpha (TNF-α) and mitigating inflammatory responses. In the context of inhibiting apoptosis, polysaccharides such as Polygonatum sibiricum polysaccharide and Angelica sinensis polysaccharide downregulate the expression of the pro-apoptotic protein Bcl-2-associated X protein (Bax) and suppress the activity of the executioner Caspase-3, thereby reducing the apoptosis rate. As for the inhibition of neovascularization, compounds including bilobalide and physcion significantly decrease the protein expression of vascular endothelial growth factor (VEGF), leading to a reduction in retinal pathological angiogenesis. Furthermore, Chinese herbal compound prescriptions such as Tongluo Zhujing pills, Yiqi Huoxue Yangyin decoction, Qiming granules, and Danlou tablets can also intervene in the onset and progression of DR through the mechanisms described above. In summary, both Chinese herbal monomers and Chinese herbal compound prescriptions can modulate the Nrf2 signaling pathway to inhibit oxidative stress, alleviate inflammation, and participate in maintaining BRB integrity, suppressing retinal neovascularization, and preventing neurodegeneration, thereby delaying the progression of DR. Therefore, this paper reviews and summarizes recent studies at home and abroad on how traditional Chinese medicine (TCM) works to treat DR, and the relationship between the Nrf2 pathway and DR. It aims to provide research ideas for preventing and treating DR.
5.Practice of multidrug-resistant organism management under the mode of information reminder system combined with multidisciplinary collaboration
Liyuan QIN ; Shengbin ZHOU ; Qiufeng LAO ; Lingling XIE ; Li'e WANG ; Hong-hong FU ; Peiyun WU ; Jiaguang HU
Chinese Journal of Infection Control 2025;24(11):1641-1646
Objective To explore the application effect of constructing a data sharing-based multidrug-resistant or-ganism(MDRO)information reminder system combined with multidisciplinary standardized measures on the whole-process closed-loop management of MDRO.Methods Hospitalized patients from whom MDRO were detected from January 1 to July 31,2024 were taken as the control group,those from August 1,2024,to May 31,2025 were as the intervention group.The control group adopted the traditional manual reporting mode for MDRO,while the in-tervention group adopted the combination of MDRO reminder system and multidisciplinary management mode.Differences in isolation order issuing rate for MDRO and process-and outcome-indicators for multidisciplinary spe-cialty before and after system implementation were compared.Results After implementing information reminder system combined with multidisciplinary measures,issuing rates of ≤24 hour and<4 hour MDRO isolation orders in the intervention group were both higher than in the control group([90.20%vs 65.23%,P<0.05],[80.64%vs 55.08%,P<0.001],respectively).Antimicrobial use rate in the intervention group was lower than in the con-trol group(36.27%vs 43.41%),with a statistically significant difference(P<0.05).The implementation rates of MDRO prevention and control measures,pathogen detection rates,and fluorescence labeling clearance rates in the intervention group were all higher than those in the control group,all with statistically significant differences(all P<0.05).The detection rate of MDRO decreased compared with the control group(10.83%vs 16.49%),and the in-cidence of MDRO healthcare-associated infection in the intervention group was lower than that in the control group(0.09%vs 0.19%),both with statistically significant differences(both P<0.001).The treatment expense in the intervention group reduced by 27 422 Yuan compared with the control group.Conclusion This study constructed an MDRO reminder system,realized full-chain monitoring system for the multidisciplinary MDRO information interac-tion platform,strengthened multidisciplinary in-depth integration,and improved the prevention and control effect for MDRO.
6.Application of energy spectrum CT quantitative analysis in the diagnosis of malignant thyroid nodules and evaluation of cervical lymph node metastasis
Mingyang WANG ; Li LI ; Lingling LI ; Yue WU
Tianjin Medical Journal 2025;53(6):654-658
Objective To explore the application value of energy spectrum CT quantitative analysis in the diagnosis of malignant thyroid nodules and evaluation of cervical lymph node metastasis.Methods A total of 100 patients with thyroid nodules screened by ultrasound were selected as the study subjects.They were divided into the benign group(n=42)and the malignant group(n=58)according to pathological results.Patients in the malignant group were sub-divided into the metastasis group(n=26)and the non-metastasis group(n=32)according to the presence or absence of cervical lymph node metastasis.All patients received energy spectrum CT examination.The iodine concentration(IC),normalized iodine concentration(NIC)and the slope of the spectral Hounsfield unit curve(λHU)were measured.The receiver operating characteristic(ROC)curve was used to analyze the application value of energy spectrum CT quantitation in diagnosing malignant thyroid nodules and evaluating cervical lymph node metastasis.Results There were statistically significant differences in CT features(shape,edge,cystic changes and surrounding tissue invasion)between benign and malignant thyroid nodules(P<0.05).However,there were no statistically significant differences in the maximum diameter,number,enhancement degree and calcification(P>0.05).IClesion,NIC and λHU were lower in the benign group than those of the malignant group.IClesion,NIC and λHU of the metastasis group were lower than those of the non-metastasis group(P<0.05).ROC curve analysis results showed that the AUCs,specificity,sensitivity and Youden index of the combination of IClesion,NIC and λHU for diagnosing malignant thyroid nodules and evaluating cervical lymph node metastasis were higher than those of each parameter(P<0.05).Conclusion Energy spectrum CT quantitative analysis is of high value in the diagnosis of malignant thyroid nodules and evaluation of cervical lymph node metastasis.
7.The relationship between multiple elements in urine and arsenic poisoning in populations exposed to drinking water arsenic in Inner Mongolia Autonomous Region
Yuchen GUO ; Binggan WEI ; Fan ZHAO ; Xinye LI ; Rui WANG ; Shuhui YIN ; Nan WU ; Lingling HE ; Zhen DI ; Kaiwen LIU ; Wei SONG ; Hui WANG ; Zhongbing ZHANG ; Danyu DENG ; Zhiwei GUO
Chinese Journal of Endemiology 2025;44(7):535-542
Objective:To study the relationship between the levels of multiple elements in urine and the risk of arsenic poisoning in populations exposed to drinking water arsenic in Inner Mongolia Autonomous Region (Inner Mongolia).Methods:From April 2023 to January 2024, a case-control study method was used to select 128 individuals with a residence time of ≥10 years in drinking water arsenic exposed areas in Inner Mongolia as study subjects. Eighty-one individuals diagnosed with arsenic poisoning were selected as the case group, and 47 healthy individuals were selected as the control group for urine sample collection and questionnaire survey. Inductively coupled plasma mass spectrometry was employed to determine the levels of 10 elements (chromium, manganese, cobalt, nickel, copper, zinc, arsenic, molybdenum, cadmium and lead) in urine. The levels of each element in urine were divided into four groups ( Q1, Q2, Q3, and Q4 groups) based on quartiles. The associations between the levels of various elements in urine and the risk of arsenic poisoning were studied using binary logistic regression model and restricted cubic spline (RCS). Results:The age of the control group and the case group [ M ( Q1, Q3)] were 61 (53, 69) and 61 (56, 67) years old, respectively. There were 19 and 43 males, and 28 and 38 females, respectively. There was no statistically significant differences in age and and gender composition between the two groups ( Z = - 0.39, P = 0.700; χ 2 = 1.91, P = 0.167). The levels of urinary copper and cadmium of the case group were higher than those of the control group, and the differences were statistically significant ( Z = - 2.66, - 2.16, P < 0.05). The results of univariate logistic regression analysis showed that urinary copper was an influencing factor for arsenic poisoning ( P = 0.017). The results of multivariate logistic regression analysis revealed that after adjusting for covariates, urinary copper and arsenic were independent influencing factors of arsenic poisoning ( P < 0.05). Taking Q1 group as a reference, urinary copper in Q3 group [ OR (95% CI) = 8.23 (1.81, 37.39), P = 0.006] increased the risk of arsenic poisoning, while urinary arsenic in Q2, Q3, and Q4 groups [ OR (95% CI) = 0.24 (0.06, 0.92), 0.12 (0.03, 0.53), 0.15 (0.04, 0.63), P < 0.05] decreased the risk of arsenic poisoning. After adjusting for covariates, RCS did not show a dose-response relationship between urinary copper, urinary arsenic, and arsenic poisoning ( P > 0.05). Conclusion:Urinary arsenic and copper are associated with the risk of arsenic poisoning in the drinking water arsenic exposed areas of Inner Mongolia, copper exposure may contribute significantly to arsenic poisoning.
8.Effects of sufentanil combined with dezocine on serum cortisol, norepinephrine, epinephrine and adrenocorticotropic hormone levels in patients undergoing thyroid surgery
Lingling LONG ; Peipei LIU ; Min YANG ; Dinghang WU
Chinese Journal of Postgraduates of Medicine 2025;48(4):369-372
Objective:To analyze the effects of sufentanil combined with dezocine on serum cortisol(Cor), norepinephrine (NE), epinephrine (E) and adrenocorticotropic hormone (ACTH) levels in patients undergoing thyroid surgery.Methods:A total of 116 patients who underwent elective thyroid surgery in the Enshi Tujia and Miao Autonomous Prefecture Central Hospital from July 2019 to November 2021 were retrospectively selected. All patients were given mechanical analgesia pump for postoperative analgesia, and were divided into the control group (58 cases) and the observation group (58 cases) according to different drug formulations. The control group was given sufentanil + tropisetron hydrochloride for postoperative analgesia. Postoperative analgesia in the observation group was administrated with dezocine + sufentanil + tropisetron hydrochloride. The postoperative pain and sedation of the two groups were observed, and the levels of serum Cor, NE, E and ACTH and the occurrence of adverse reactions were compared between the two groups.Results:The visual analogue scale (VAS) scores in the observation group at 2, 6, 12 and 24 h after operation were lower than those in the control group, and the Ramsay scale scores were higher than those in the control group, there were statistical differences ( P<0.05). After operation, the levels of Cor, NE, E and ACTH in the observation group were lower than those in the control group: (857.81 ± 186.30) nmol/L vs. (1 082.20 ± 169.64) nmol/L, (1 469.40 ± 201.47) pmol/L vs. (1 548.42 ± 202.59) pmol/L, (498.17 ± 69.56) pmol/L vs. (630.47 ± 73.55)pmol/L, (15.35 ± 3.88) pmol/L vs. (17.36 ± 4.03) pmol/L, there were statistical differences ( P<0.05). The incidence of adverse reactions in the observation group was lower than that in the control group:12.07% (7/58) vs. 32.76% (19/58), there was statistical difference ( χ2 = 7.14, P<0.01). Conclusions:Sufentanil combined with dezocine for postoperative analgesia in patients undergoing thyroid surgery can exert sedative and analgesic effects by adjusting serum Cor, NE, E and ACTH levels, and reduce stress response, with good safety.
9.Research Progress on Traditional Chinese Medicine Treatment of Nonalcoholic Fatty Liver Based on NF-κB Signaling Pathway
Congyi LIU ; Na ZHENG ; Jingjing XU ; Ning WANG ; Zimeng HUANG ; Ying DING ; Lingling QIN ; Lili WU ; Tonghua LIU
World Science and Technology-Modernization of Traditional Chinese Medicine 2025;27(9):2553-2568
Non-alcoholic fatty liver disease(NAFLD)is a progressive liver disease caused by factors other than alcohol caused by heterotopic fat accumulation in the liver.In recent years,the incidence rate has been increasing,and there is no specific clinical drug.Studies have found that nuclear transcription factor κB(NF-κB)can activate inflammation and oxidative stress,which plays an important role in the pathogenesis of NAFLD.Traditional Chinese medicine is convenient to obtain and cheap.It can treat NAFLD through multiple channels with good clinical efficacy,and no obvious side effects have been found till now.Many studies have shown that traditional Chinese medicine can inhibit the occurrence and development of NAFLD by inhibiting the NF-κB signaling pathway.This article summarizes the research results of traditional Chinese medicine in treating NAFLD based on the NF-κB signaling pathway since 2021,for several traditional Chinese medicine extracts(flavonoids,terpenoids,polysaccharides,glycosides,alkaloids and phenolic compounds)and traditional Chinese medicine compound(Shugan Jianpi Fang,Erhuang Quzhi Granules,Fuzi Lizhong Decoction,Huangqin Decoction,Qinlian Hongqu Decoction,Jiangzhi Granules),which can inhibit the further development of NAFLD by improving liver inflammatory response,oxidative stress response,fibrosis,apoptosis,autophagy and pyroptosis through the NF-κB signaling pathway,in order to provide new ideas for future new drug development and clinical medication.
10.Static compressive stress accelerting autophagy of human ligament cells in three-dimensional culture
Shiyang WU ; Xueping KANG ; Rui ZOU ; Zhen CHAI ; Lingling JI
Journal of Practical Stomatology 2025;41(2):189-192
Objective:To establish a three-dimensional culture and stress-loaded model of human periodontal ligament cells(hP-DLCs)in vitro and to determine the effect of static pressure on autophagy.Methods:Periodontal tissue was scraped from fresh ex-tracted tooth surfaces for culture and hPDLCs were obtained.Type Ⅰ rat tail collagen was extracted to prepare collagen-sodium algi-nate composite hydrogel,in which third-generation hPDLCs were embedded.After 72 h of culture,gene expression of autophagy-related proteins LC3,Atg-5 and Beclin-1 was detected by quantitative real-time polymerase chain reaction(qRT-PCR),and the expression of Atg-5,Beclin-1 and LC3 was detected by Western blotting.Results:Cells grew well in collagen-alginate hydrogels.After 15 min of compressive stress loading,the level of autophagy of hPDLCs increased significantly and then gradually decreased to the baseline level.Conclusion:Collagen-alginate hydrogel has good biocompatibility and safety,and can be used as an excellent scaffold for three-dimensional cell culture in vitro.Static compressive stress can accelevate autophagy,and this acceleration is rapid and short-lived.


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