1.Effects of di(2-ethylhexyl) phthalate on glucose homeostasis in rats due to impaired autophagy flux of islet β cells mediated by oxidative stress
Hongyang ZHOU ; Yuting HU ; Xue CHEN ; Yunqiang ZHOU ; Liping LI ; Ling LI ; Herong LIU
Journal of Environmental and Occupational Medicine 2025;42(6):674-683
Background Di(2-ethylhexyl) phthalate (DEHP) is the most prevalent environmental endocrine disruptor among phthalate acid esters (PAEs) worldwide. Previous studies have indicated that exposure to DEHP may disrupt glucose metabolism. Objective To investigate the impact of DEHP on glucose homeostasis in rats, focusing on oxidative stress-induced impairment of autophagy in islet β cells. Methods Forty male SD rats were randomly assigned to four groups, receiving DEHP doses of 0, 187, 375, and 750 mg·kg−1 for 12 weeks. Oral glucose tolerance (OGTT) and insulin tolerance tests (ITT) were conducted 24 h after the final exposure. Pancreatic microstructural alterations were assessed using hematoxylin and eosin (HE) staining and transmission electron microscopy (TEM). Commercial ELISA kits were employed to quantify the levels of insulin, adenosine triphosphate (ATP), and adenosine monophosphate (AMP) in rat serum, as well as the protein expression level of activated caspase-3 in pancreatic tissue. Additionally, commercial microplate kits were utilized to measure the concentration of reduced glutathione (GSH) in serum, the activity of superoxide dismutase (SOD) using water-soluble tetrazolium salt-1, the content of malondialdehyde (MDA) by thiobarbituric acid method, and the level of reactive oxygen species (ROS) in pancreatic tissue by chemical fluorescence method. Reverse transcription polymerase chain reaction (RT-PCR) was used to measure sequestosome1 (SQSTM1/p62), Beclin1, microtubule-associated protein 1 light chain 3 (LC3), and cysteinyl aspartate specific proteinase-8 (Caspase-8) mRNA levels. Western blot analysis was applied to detect the protein relative expression levels of p62, Beclin-1, LC3-I, LC3 II, AMPK, p-AMPK, mTOR, p-mTOR, ULK1, and Caspase-8. Results Compared to the 0 mg·kg−1 DEHP group, the 750 mg·kg−1 DEHP group exhibited a significant increase in fasting blood glucose levels at 2, 4, 6, and 12 weeks (P<0.05). The OGTT showed that, following high-glucose gavage, the 187 mg·kg−1 DEHP group had elevated blood glucose at 30 min (P<0.05), the 375 mg·kg−1 DEHP group showed increased glucose levels at 15, 30, and 180 min (P<0.05), and the 750 mg·kg−1 DEHP group exhibited elevated levels at 15, 30, 60, and 180 min (P<0.05). The 375 and 750 mg·kg−1 DEHP groups demonstrated significantly increased OGTT area under the curve (AUC) values (P<0.05). In contrast, ITT results indicated no significant differences in blood glucose levels or AUC among the DEHP exposure groups at all time points (P>0.05). Compared to the 0 mg·kg−1 DEHP group, the 750 mg·kg−1 DEHP group exhibited significantly higher HOMA-IR levels and markedly lower HOMA-ISI values (P<0.05). HE and TEM showed that in each DEHP exposure group, the number of islet cells decreased, the islet area reduced, and chromatin condensation occurred. The endocrine granules in the cytoplasm of islet β cells decreased, and there were varying degrees of widening of the nuclear membrane gap, flattening and expansion of the Golgi complex, and expansion of the endoplasmic reticulum. Ribosome separation was observed, and autophagosomes were visible. In the 375 and 750 mg·kg−1 DEHP groups, the mitochondria were deformed to varying degrees, and some cristae structures disappeared, presenting vacuolization. Moreover, the chromatin condensation in the nuclei was more severe in the 750 mg·kg−1 DEHP group. The serum SOD activity was significantly elevated in the 750 mg·kg−1 DEHP group (P<0.05). Both the 375 mg·kg−1 and 750 mg·kg−1 DEHP groups exhibited a significant increase in the relative ROS content in pancreatic tissue (P<0.05). In DEHP-treated groups, the MDA content increased (P<0.05), while the GSH content decreased (P<0.05). Additionally, in the 750 mg·kg−1 DEHP group, the AMP/ATP ratio in serum was significantly raised (P<0.05), and the expression of cleaved Caspase-3 protein in pancreatic tissue was also significantly increased (P<0.05). The relative mRNA levels of p62, Beclin-1, LC3, and Caspase-8 in the pancreatic tissue of rats exposed to DEHP were significantly elevated (P<0.05). The relative expression levels of p-AMPK/AMPK, p-ULK1/ULK1, and Beclin-1 proteins in the DEHP-treated groups were significantly increased (P<0.05). In the 375 mg·kg−1 and 750 mg·kg−1 DEHP treatment groups, the relative expression levels of p62, LC3 II/LC1, and Caspase-8 proteins were significantly increased (P<0.05), while the relative expression level of p-mTOR/mTOR was significantly decreased (P<0.05). Conclusion DEHP can disrupt glucose homeostasis by inducing oxidative stress, which subsequently activates autophagy via the ROS/AMPK/ULK1 pathway, impairing autophagic flux and promoting apoptosis of islet β cells, ultimately decreasing their function and number.
2.Effectiveness of exercise on sleep quality in patients with Parkinson's disease:a Meta-analysis
Yuai YING ; Rui SUN ; Chen HU ; Yaolun WANG ; Lanlan ZHOU ; Hongyang HU
Chinese Journal of Nursing 2024;59(4):482-490
Objective To evaluate the effectiveness of exercise for people with Parkinson's disease on sleep quality.Methods Computerized retrieval of PubMed,Web of Science,Embase,the Cochrane Library,CINAHL,CN-KI,WanFang Data,VIP,CBM was conducted to collect randomized controlled trials about the effect of exercise on people with Parkinson's disease from inception to December,2022.There were 2 researchers who independently screened the literature,extracted the data and evaluated the risks of bias in the included studies.Meta-analysis was performed using RevMan 5.4 software.Results A total of 13 studies were included,with 874 patients.The result of meta-analysis show that the overall effect size of exercise intervention on sleep quality for people with Parkin-son's disease is significant(SMD=-0.54,95%CI=[-0.90,-0.19],P<0.01).Subgroup analysis show that the maxi-mum effect size of intervention frequency is 4-5 times/week(SMD=-0.75);the maximum effect size of exercise intensity is light intensity(SMD=-2.19);the maximum effect size of a single intervention time is 40-55 minutes(SMD=-0.69);the maximum effect size of exercise type is traditional Chinese exercise(SMD=-0.63);the maximum ef-fect size of intervention cycle is 12 weeks(SMD=-0.66).Conclusion Exercise intervention has significantly ef-fects to improve sleep quality on Parkinson's disease patients.It is a more effective way to improve sleep quality by exercising 4-5 times per week,while each exercise lasts about 40-55 min for 12 weeks in Traditional Chinese Medicine exercise with light intensity.
3.Effects of di(2-ethylhexyl) phthalate on lipid metabolism in rats and potential mechanism
Yue ZHU ; Ruichen LEI ; Hongyang ZHOU ; Yuting HU ; Liping LI ; Ling LI ; Herong LIU ; Xiaoming DE
Journal of Environmental and Occupational Medicine 2024;41(10):1167-1172
Background Di(2-ethylhexyl) phthalate (DEHP) is the highest consumed and the most widely used phthalic acid ester, their effects on lipid metabolism have attracted the attention of many scholars. However, the associated mechanism is still unclear. Objective To observe the effect of DEHP on lipid metabolism in rats, probe its possible mechanism, and provide a research basis for the effect of DEHP on human lipid metabolism. Methods Forty healthy male SD rats were randomly divided into 4 groups: solvent control (0 mg·kg−1 DEHP), low DEHP (187 mg·kg−1), medium DEHP (375 mg·kg−1), and high DEHP (750 mg·kg−1) groups. DEHP was administered by oral gavage for 6 d per week, consecutively 8 weeks. The rats were weighed once a week during the exposure period. At 24 h after the last exposure, the rats were anesthetized with 20% urethane and sacrificed by apical puncture. Rat livers were harvested and weighed before hematoxylin-eosin (HE) histopathological observation. Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the mRNA levels of lipid metabolism-related genes Janus kinase 3 (JAK3), signal transducer and activator of transcription 5b (STAT5b), and peroxisome proliferator-activated receptor γ (PPARγ) in liver, and Western blot was used to detect the expression levels of lipid metabolism-related proteins JAK3, STAT5b, and PPARγ in liver. Results Compared with the control group, there was no significant difference in the body weight gain of the rats in each group (P>0.05). The liver organ coefficients of the DEHP exposure groups were higher than that of the control group (P<0.001), and increased with higher DEHP dosages. The level of high-density lipoprotein cholesterol (HDL-C) in serum decreased in all DEHP exposure groups (P<0.05), and the level of low-density lipoprotein cholesterol (LDL-C) in serum increased in the high DEHP group (P<0.05). The results of liver histopathological morphology showed that the hepatocytes of each DEHP group were enlarged and edematous in varying degrees, with loose stroma and irregular arrangement of cells, which were manifested as inflammatory cell infiltration and fatty degeneration of liver cells. Compared to the control group, the mRNA levels of JAK3, STAT5b, and PPARγ in liver tissues of rats in each DEHP group decreased (P<0.001). Compared to the control group, the relative expression levels of JAK3 in each DEHP group decreased (P<0.05), and the relative expression levels of STAT5b and PPARγ in the medium and high DEHP groups decreased (P<0.05). Conclusion DEHP exposure can induce abnormal lipid metabolism in rats, and the mechanism may be related to DEHP inhibiting the activation of JAK3/STAT5b/PPARγ signaling pathway.
4.Research advances on application of sub-epidermal moisture scanner in monitoring tissue viability of early pressure injuries
Yaolun WANG ; Hongyang HU ; Qing WU ; Huiyan WEI
Chinese Journal of Burns 2024;40(1):96-100
Pressure injury (PI) not only reduces the quality of life of patients but also is expensive to manage, placing a heavy financial burden on patients and their families, and society. Despite the increasing diversity of methods used to identify early PI, there are still few methods that can truly and accurately predict early PI. The sub-epidermal moisture scanner is the first U.S. Food and Drug Administration-authorized PI management device that can predict the occurrence and development of PI by measuring the level of local tissue bio-capacitance and monitoring the tissue viability. As an emerging diagnostic instrument, the sub-epidermal moisture scanner has already shown great advantages in clinical practice, which can promote the informatization, digitization, and intelligent prevention and management of PI. This paper introduces the pathophysiological mechanism of PI, elucidates the working principle and parameter settings of the sub-epidermal moisture scanner, its clinical application in monitoring tissue viability in early PI, and its limitation, and looks forward to its future development.
5.Clinical characteristics analysis of 15 cases of eosinophilic granulomatous polyangiitis
Juan LIU ; Lu HU ; Yuzhou DUAN ; Hongyang SHI
Journal of Chinese Physician 2024;26(5):727-732
Objective:To explore the characteristics of eosinophilic granulomatous polyangiitis (EGPA) and provide a basis for clinical diagnosis and treatment.Methods:A retrospective analysis was conducted on the epidemiology, clinical manifestations, laboratory tests, imaging and pathological characteristics, and treatment outcomes of 15 cases of eosinophilic granulomatous vasculitis.Results:Fifteen patients with eosinophilic granulomatous vasculitis were aged (50.7±17.2)years old, with a median time of 182.5 days from onset to diagnosis. Thirteen patients presented with respiratory symptoms as the initial diagnosis, while the other two presented with skin and nervous system damage. These patients were all accompanied by an increase in peripheral blood eosinophils, fluctuating between 10.6% and 60.94%. Thirteen patients had respiratory symptoms, mainly cough, sputum production, shortness of breath, and varied chest computed tomography (CT) findings. Histopathology or alveolar lavage fluid also showed changes in eosinophil count.Conclusions:The clinical manifestations of eosinophilic granulomatous vasculitis are diverse, often involving the respiratory system, as well as multiple systems such as the circulatory system, digestive system, nervous system, urinary system, and skin. However, due to its frequent early manifestations of wheezing, it is often misdiagnosed as refractory asthma. Improving the understanding of eosinophilic granulomatous vasculitis and improving the level of early diagnosis can help improve the prognosis of patients.
6.Effect of body mass index of recipients on early prognosis after lung transplantation
Dapeng WANG ; Xiaoshan LI ; Zhongping XU ; Chenglong LIANG ; Chunxiao HU ; Hongyang XU
Organ Transplantation 2023;14(5):669-675
Objective To evaluate the effect of body mass index (BMI) on early prognosis of the recipients after lung transplantation. Methods Clinical data of 307 lung transplant recipients were retrospectively analyzed. According to preoperative BMI, all recipients were divided into the low (BMI <18.5 kg/m2, n=114), normal (18.5 kg/m2≤BMI <24 kg/m2, n=145) and high (BMI≥24.0 kg/m2, n=48) BMI groups, respectively. Baseline data including age, sex, blood type, BMI, preoperative complications, preoperative pulmonary hypertension, and intraoperative use of extracorporeal membrane oxygenation (ECMO) of all recipients were compared among three groups. The survival rate of all recipients was estimated by Kaplan-Meier curve and the survival curve was delineated. The differences of survival rate were analyzed by log-rank test. The 30-, 90- and 180-d mortality risk of all recipients after lung transplantation in different BMI groups was compared by multivariate Cox regression analysis. Results There were significant differences in age and sex of recipients among three groups (both P<0.05). There was a significant difference regarding the 180-d survival rate after lung transplantation among different BMI groups (P<0.05). Multivariate Cox regression analysis showed that the 90-d mortality risk after lung transplantation in the high BMI group was 2.295 times higher than that in the normal BMI group [hazard ratio (HR) 2.295, 95% confidence interval (CI) 1.064-4.947, P=0.034]. In the high BMI group, the 180-d mortality risk after lung transplantation was 2.783 times higher compared with that in the normal BMI group (HR 2.783, 95%CI 1.333-5.810, P=0.006), and the 180-d mortality risk in the low BMI group was 2.181 times higher than that in the normal BMI group (HR 2.181, 95%CI 1.124-4.232, P=0.021). Conclusions Compared with the recipients with normal BMI, their counterparts with high and low preoperative BMI have higher mortality risk early after lung transplantation. Adjusting preoperative BMI to normal range contributes to improving early prognosis of lung transplant recipients.
7.De novo transcriptome assembly and metabolomic analysis of three tissue types in Cinnamomum cassia.
Hongyang GAO ; Huiju ZHANG ; Yuqing HU ; Danyun XU ; Sikai ZHENG ; Shuting SU ; Quan YANG
Chinese Herbal Medicines 2023;15(2):310-316
OBJECTIVE:
The barks, leaves, and branches of Cinnamomum cassia have been historically used as a traditional Chinese medicine, spice, and food preservative, in which phenylpropanoids are responsible compounds. However phenylpropanoid biosynthesis pathways are not clear in C. cassia. We elucidated the pathways by descriptive analyses of differentially expressed genes related to phenylpropanoid biosynthesis as well as to identify various phenylpropanoid metabolites.
METHODS:
Chemical analysis, metabolome sequencing, and transcriptome sequencing were performed to investigate the molecular mechanisms underlying the difference of active components content in the barks, branches and leaves of C. cassia.
RESULTS:
Metabolomic analysis revealed that small amounts of flavonoids, coumarine, and cinnamaldehyde accumulated in both leaves and branches. Transcriptome analysis showed that genes associated with phenylpropanoid and flavonoid biosynthesis were downregulated in the leaves and branches relative to the barks. The observed differences in essential oil content among the three tissues may be attributable to the differential expression of genes involved in the phenylpropanoid and flavonoid metabolic pathways.
CONCLUSION
This study identified the key genes in the phenylpropanoid pathway controling the flavonoid, coumarine, and cinnamaldehyde contents in the barks, branches and leaves by comparing the transcriptome and metabolome. These findings may be valuable in assessing phenylpropanoid and flavonoid metabolites and identifying specific candidate genes that are related to the synthesis of phenylpropanoids and flavonoids in C. cassia.
8.Analysis of risk factors of prolonged mechanical ventilation after lung transplantation
Dapeng WANG ; Xiaoshan LI ; Chenhao XUAN ; Chunxiao HU ; Feng ZHANG ; Yifeng WANG ; Hongyang XU
Organ Transplantation 2022;13(6):797-
Objective To identify the risk factors of prolonged mechanical ventilation (PMV) after lung transplantation. Methods Clinical data of 90 recipients undergoing lung transplantation were retrospectively analyzed. According to the duration of invasive mechanical ventilation after operation, all recipients were divided into the PMV group (ventilation duration > 48 h,
9.Influence of syndrome differentiation and diet on traditional Chinese medicine syndrome score of patients with liver cirrhosis and ascites based on "Gu Ben Kai Qu" theory
Li HU ; Xiaowen TANG ; Liyan LIU ; Danyang SHEN ; Yali ZHANG ; Hongyang TAN
Chinese Journal of Practical Nursing 2021;37(29):2287-2295
Objective:To explore the effect of dialectical diet on traditional Chinese medicine (TCM) syndrome score of cirrhotic ascites patients based on "Gu Ben Kai Qu" theory.Methods:From March 2019 to January 2020, 84 patients with liver cirrhosis and ascites admitted to Shuguang Hospital Affiliated to Shanghai University of TCM were randomly divided into two groups according to the different dialectical types of the subjects, 14 cases in each group. Three non-syndrome differentiation diet groups were given routine nursing care of liver cirrhosis ascites. On the basis of routine nursing, the corresponding medicinal diet was selected according to syndrome differentiation based on "Gu Ben Kai Qu" theory. Patients with spleen and kidney yang deficiency syndrome selected Shenqi lean meat decoction. Patients with Yin deficiency of liver and kidney selected Wolfberry and ophiopogon spareribs decoction. Patients with qi stagnation and blood stasis syndrome selected Danggui Sanqi spareribs decoction. The TCM syndrome score scale for liver disease and the curative effect evaluation of cirrhosis ascites were used to evaluate the effect.Results:Eighty effective cases were included. On the first day of admission, the 14th day and the second week after discharge, the TCM syndrome scores of liver disease were as follows: the group (a1b1) with the spleen and kidney yang deficiency syndrome was 46.38±8.56, 34.20±8.42, 31.40±4.22, respectively. The group (a1b2) with the liver kidney yin deficiency syndrome was 41.50±8.71, 31.35±8.63, 31.12±4.94. The group(a1b3) with the qi stagnation and blood stasis syndrome was 45.92±7.86, 35.17±7.57, 30.83±7.32, respectively. The non-syndrome differentiation diet group (a2b1) with the spleen and kidney yang deficiency syndrome was 46.29±8.38, 39.79±7.65, 36.64±6.83, respectively. The non-syndrome differentiation diet group (a2b2) with the liver and kidney yin deficiency syndrome was 40.50±8.12, 38.10±8.93, 35.38±8.24, respectively. The non-syndrome differentiation diet group (a2b3) with the qi stagnation and blood stasis syndrome was 45.62±7.99, 41.83±7.31, 38.83±7.96, respectively. The comparison of TCM syndrome scores of liver disease at three time points was statistically significant ( χ2 value was 63.998, P<0.05), and the comparison between groups was statistically significant ( χ2 value was 20.993, P<0.05). On the 14th day and the second week after discharge, there were significant differences between the groups with the syndrome differentiation diet and another three groups with non-syndrome differentiation diet ( F values were 3.244, 3.489, all P<0.05). Conclusions:Based on the theory of "strengthening the foundation and opening channels", the syndrome differentiation group can effectively reduce the TCM syndrome score of patients with cirrhosis ascites, improve the symptoms and enhance the curative effect. With the development of time, the score of TCM syndrome in patients with liver disease become lower. On the 14th day of admission, patients with Yin deficiency of liver and kidney given medicated diets had significant effect; patients with spleen kidney yang deficiency syndrome or qi stagnation and blood stasis had significant effect in 2 weeks after discharge; which can effectively improve the clinical symptoms of patients with cirrhosis ascites to worthy of clinical application.
10.Evaluation of the effect of two kinds of drainage materials in surgical cavity wound
Hongyang HU ; Mengya HU ; Huiyan WEI
Chinese Journal of Practical Nursing 2020;36(22):1685-1688
Objective:To compare the effects of non-woven cotton of surgical dressing and medical gauze in surgical cavity wounds.Methods:A total of 118 patients with surgical cavity wounds in Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University from March to August in 2017 were recruited and divided into two groups by random digits table method, 58 in the observation group and 60 in the control group. The wounds were filled with non-woven cotton of surgical dressing in the observation group and medical gauze was received in the control group. The wound healing, drainage, surrounding skin maceration, the amount of fluid absorption, the pieces of dressings used, residues of yarn, the time of dressing change and the costs of treatment were compared between the two groups.Results:There was no significant difference in the healing rate, surrounding skin macerations and the cost between the two groups ( P>0.05). The intervention group was superior to the control group in the following indicators: the none-residual rate of yarn in the wound were 100.0% (282/282), the median amount of liquid absorbed were 5.43 g, the median pieces of dressings used were 14.00 pieces, the median time of dressing change were 98.00 s, while those index were 70.7% (208/294), 4.29 g, 19.50 pieces, 152.00 s in the control group, compared to the control group, the observation group showed a higher none-residual rate of yarn, more liquid absorbed, less dressing used, less dressing change time in the observation group, the difference was statistically significant ( χ2 value was 96.968, Z values were 2.199, 2.364, 3.852, P<0.05 or 0.01). Conclusions:The non-woven cotton of surgical dressing has no residual yarn in the wound, more liquid absorption, less pieces of gauze, and shorten dressing change time than the medical gauze. It can be used as a kind of superior surgical drainage gauze.

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