1.Expression of visfatin in MIN6 islet IS-cells and effects of glucose and palmitate
Qun CHENG ; Yongde PENG ; Weiping DONG ; Yufei WANG ; Yufan WANG ; Xiaoying DING
Chinese Journal of Endocrinology and Metabolism 2009;25(3):318-319
Visfatin was expressed in rat anti mouse islets,as well as in MIN6 cells. The visfatin expression was affected by various concentrations of environmental glucose (5.5 and 33.3 mmoL/L) and palmitate(0.5 mmol/L). As compared with low-level glucose medium (5.5 mmol/L, 1.0±0.11) , visfatin expression increased in media with high glucose and palmitate (1.32 ±0. 18, 1. 33±0. 15,1.72±0.27, all P<0. 05). The result suggests that visfatin seems to be involved in the regulation of insulin secretion.
2.Research progress in impact of bodily damage on gut microecology induced by exposure to high-altitude hypoxic environments
Yufan DING ; Yating WANG ; Weili LIU ; Zhiqiang SHEN
Military Medical Sciences 2024;48(9):690-694
A high-altitude environment is characterized by low oxygen levels,low pressure,and low temperatures.Exposure to the plateau environment often causes damage to the body,leading to the occurrence of acute mountain sickness/chronic mountain sickness(AMS/CMS).Research indicates that acute or chronic exposure to the special environment can result in overall organ dysfunctions,such as those in the heart and gastrointestinal tract.The damage to the body caused by exposure to the plateau environment is closely related to acute and chronic hypoxia.Physiological maladjustment or disease is usually accompanied by changes in the structure of the gut microbiota.There have been reports on the correlations between the gut microbiota and bodily harm caused by high-altitude exposure.However,the specific types of bacteria involved and the mechanisms of action are still under investigation.This article reviews the intestinal tissue damage caused by low oxygen levels,immune activation,changes in microbial community structure,and differential metabolic products.The association and underlying mechanisms between bodily harm due to high-altitude exposure and the intestinal microbiota are also explored in hopes of stimulating new lines of thought related to the prevention and treatment of bodily harm caused by exposure to the plateau environment.
3.Retrospective study on the initial clinical manifestations of 1958 hospitalized patients with systemic lupus erythematosus
Yufan GUO ; Lingyun SUN ; Yaohong ZOU ; Wenyou PAN ; Xiangdang WANG ; Jieping PAN ; Miaojia ZHANG ; Juan TAO ; Yu ZHANG ; Kuilin TAN ; Jing LI ; Xiang DING ; Xian QIAN ; Zhanyun DA ; Meimei WANG ; Zhiwei CHEN
Chinese Journal of Rheumatology 2011;15(2):105-107
Objective To investigate the initial manifestation and disease onset feature of systemic lupus erythematosus(SLE) in the past ten years in fifteen hospitals in Jiangsu Province.Methods Data was collected by the same Methodsin all the participated hospitals and then it was summarized for retrospective analysis.Two groups were compared by chi-square test.Results ① One thousand nine hundred and fifty eight patients were investigated and the male-to-female ratio was 1∶15.0.② One thousand seven hundred and ninty eight patients had clear initial manifestations.The most common initial manifestations were skin and mucosal lesions(769 cases,42.8% ) and arthritis (697 cases,38.8% ).The main skin lesion was malar rash (706 cases).Arthritis was found to be more common in female than male.③ All hospitalized patients at their first admission showed multiple organ/system involvement:the most common involvement was skin and mucous membrane (82.3%),hematologic damage (74.0%),in which at least one series of blood cells were involved,arthritis (1156 cases,56.5% ) much more than myositis (51 cases),proteinuria 1046 cases and hematuria in 385 cases.Renal biopsy pathology showed type Ⅳ glomerulonephritis.Conclusion ① SLE patients are mainly female and the male to female ratio is 1∶15.0.② The most common initial manifestations are skin and mucosal lesions.③ The most commonly involved organ/system are skin and mucous membrane,blood,joint and kidney.The most common pathological changes shown in renal biopsy is type Ⅳ glomerulonephritis.
4.Research progress in in vitro detection of urinary volatile organic compounds for early cancer diagnosis
Yuan DING ; Wenyu ZHANG ; Yufan SUN ; Zhijian HUANG ; Yutong HAN ; Zhigang ZHU
International Journal of Biomedical Engineering 2022;45(2):176-185
With the further increase of the global cancer burden, various cancers are increasingly challenging human health status and quality of life. Thus, early screening of cancer is crucial. Urinary volatile organic compounds (VOCs) detection techniques have the advantages of easy access to samples, high acceptance of patients, non-invasive, and so on, which have been favored and concerned by researchers. In this paper, existing techniques and methods for cancer diagnosis based on urine VOCs were described, relevant studies on the use of urine VOCs for cancer diagnosis were reviewed, and the barriers and future perspectives of the technique were discussed. This paper can be a reference for researchers working in the direction of urinary VOCs detection, a multidisciplinary field that spans medicine and materials science.
5.Application of Molecular Docking in the Studies on Screening and Mechanism of Pharmacodynamic Sub-stances of Traditional Chinese Medicine
Wenjun WANG ; Yi DING ; Fang DOU ; Hang XU ; Yufan JIAN ; Xiaona FENG ; Aidong WEN
China Pharmacist 2018;21(6):1020-1023
Molecular docking is one of the main methods for computer-aided drug design (CADD). In recent years, molecular doc-king is widely used and has made some progress in the screening of pharmacodynamic substance, the target of finding drugs for diseases, and the mechanism exploration for traditional Chinese medicine. In this review, the principle and mechanism of molecular docking, and some commonly used software were introduced. And the application of molecular docking technology was summarized in the studies on the screening and pharmacodynamic mechanisms of traditional Chinese medicine. Finally, the existing problems were discussed, and the fu-ture trend in this field was looked ahead. The study can provide more scientific basis for the clinical research and development of new drugs.
6.Preparation and performance of an adhesive hemostatic dual-network hydrogel
Yufan Ding ; Rui Su ; Zhao Pan ; Huiqin Wen
Acta Universitatis Medicinalis Anhui 2023;58(2):243-247
Objective:
To prepare an adhesive hemostatic hydrogel and examine its hemostatic performance and biocompatibility.
Methods:
The precursor components were homogenously dissolved and photo-crosslinked in order to form dual-network hydrogel.The electron microscopy morphology was then analyzed ; mechanical properties were tested ; in vitro hemostatic performances were investigated by whole blood clotting test and simulation trial of cutaneous bleeding.Further,the hemocompatibility was evaluated.
Results:
A characteristic porous network structure was presented through microscopy observation of the sample.The tensile strength of hydrogel reached 46 kPa,and strong adhesion was achieved between the hydrogel and ex vivo biological tissues.Hydrogel had significant effect on wound closure and clotting time could be shortened to 1 minute.
Conclusion
The hydrogel was capable of accelerating coagulation due to its ability to accumulate platelets and red cells after blood contact.The dual-network hydrogel with good hemocompatibility enabled excellent hemostatic performance by the synergistic effects of the chemical activation mechanism and physical hemostatic effect.
7.Relationship between coagulation indicators and early stage prognosis in patients with acute respiratory distress syndrome
Xiaoer JIN ; Yufan PU ; Miao WANG ; Chunmeng XUE ; Qingbo LIAO ; Qi DING
Chongqing Medicine 2024;53(15):2296-2300,2307
Objective To investigate the relationship between coagulation indicators and early prognosis in patients with acute respiratory distress syndrome (ARDS).Methods The data of ARDS patients receiving the treatment in the intensive care unit (ICU) from 2008-2019 were selected from the Critical Care Medicine Open Database (MIMIC-Ⅳ V2.0 version) jointly published by MIT,Beth Israel Deaconess Medical Center,and Philips Medical,the data were categorized according to the severity of the patients' disease and the causes of lung damage.The coagulation indexes and 28 d mortality (m28d) rates were compared among different ARDS patients.The receiver operating characteristic (ROC) curve was drawn.The area under the curve was calculated to evaluate the predictive values of the related indicators.The univariate and multivariate logistic re-gression was adopted to analyze the risk factors affecting m28d in the patients with ARDS.Results Maximum prothrombin time (PTmax) in the patients with pulmonary origin ARDS was significantly lower than that in the patients without pulmonary origin ARDS,and the difference was statistically significant (P<0.05).PLTmin,PLTmax and Sequential Organ Failure Assessment (SOFA) score had statistical difference among dif-ferent severity degrees of ARDS patients (P<0.05).Minimum international normalized ratio (INRmin),maxi-mum international normalized ratio (INRmax),minimum prothrombin time (PTmin),PTmax,maximum activated partial thromboplastin time (APTTmax) and SOFA score had statistical differences between the survival group and death group (P<0.05).AUC of INRmin,INRmax,PTmin,PTmax and APTTmax were 0.607,0.624,0.610,0.620 and 0.648 respectively.The multivariate logistic regression analysis showed that APTTmax (OR=1.011,95%CI:1.001-1.022,P=0.029) was an independent risk factor for affecting m28d in the ARDS patients.Conclu-sion Plasma PLT levels in different severities of ARDS patients have the difference and APTTmax on the first day in ICU is an independent risk factor for affecting early prognosis in ARDS patients.
8.Effect of ab-externo circumferential suture trabeculotomy on 24-hour pattern of intraocular pressure in patients with primary open angle glaucoma
Tao LIN ; Jiaqi WANG ; Yufan DING ; Gang LIU
International Eye Science 2024;24(8):1324-1327
AIM: To evaluate the effect of ab-externo circumferential suture trabeculotomy(CST)on the 24 h pattern of intraocular pressure(IOP)in primary open angle glaucoma(POAG).METHODS: This retrospective study included 18 POAG patients who had poor control of IOP from March 2021 to May 2022. The ab-externo CST was performed, and IOP was tested preoperatively and 1 a postoperatively(9:00 a.m., 12:00 a.m., 3:00 p.m., 6:00 p.m., 9:00 p.m., 12:00 p.m., 3 a.m., and 6:00 a.m.). The mean, peak, trough, and range of IOP, as well as the average diurnal-nocturnal IOP change were calculated and compared.RESULTS: The 24 h IOP curves exhibited a decreasing trend during the diurnal period and an increasing trend during the nocturnal period, reaching a trough in the afternoon and peaking at night; the time of trough and peak IOP occurred several hours earlier compared to preoperative eyes. Postoperatively, the mean, peak, and trough IOP values were significantly lower compared to preoperative levels. The range of fluctuation showed no significant difference, while the average diurnal-nocturnal IOP change increased significantly.CONCLUSION: CST could reduce IOP of patients with POAG, but could not change the range of IOP fluctuation. However, an increase in the average diurnal-nocturnal IOP change was observed, indicating that CST might not necessarily reduce diurnal-nocturnal IOP fluctuations.