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.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.
3.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.
4.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.
5.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.
6.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.