1.Establishment of a Method for Galvanic Vestibular Stimulation-vestibular Evoked Myogenic Potentials in Healthy Children
Zichen CHEN ; Juan HU ; Feiyun CHEN ; Hui YANG ; Yanfei CHEN ; Tingting XUE ; Fangyuan YANG ; Yuzhong ZHANG ; Qiong WU ; Yulian JIN ; Xiaoyong REN ; Qing ZHANG
Journal of Audiology and Speech Pathology 2024;32(2):100-106
Objective To establish the methods of galvanic vestibular stimulation-vestibular evoked myogenic potentials(GVS-VEMPs)in healthy children and to obtain the normal value of GVS-cVEMP and GVS-oVEMP in these children in China.Methods Twenty(3~14 years)healthy children and 24 healthy adults(18~30 years)were enrolled for conventional examinations of GVS-cVEMP and GVS-oVEMP.Using the galvanic stimulation in-tensity under 3 mA/1 ms for children and 5 mA/1 ms for adults.The characteristics of elicitation and parameter re-sults of GVS-cVEMP and GVS-oVEMP in children and adults,as well as the pain scores and the elicitation of differ-ent stimulus intensities in the two age groups were recorded.Results The elicitation of GVS-cVEMP and GVS-oVEMP were both 100.0%in children and adult groups.The p1 latency,n1 latency and p1-n1 interval latency of GVS-cVEMP were 10.46±1.84 ms,16.98±2.12 ms and 6.52±1.42 ms respectively in children group,the n1 la-tency and p1-n1 interval latency were significantly shorter than the adult group(P<0.05).The n1 latency,p1 la-tency and p1-n1 interval latency of GVS-oVEMP were 8.87±1.40 ms,12.25±1.80 ms and 3.39±1.07 ms re-spectively in children group with no significant difference between the two groups.The thresholds of GVS-cVEMP and GVS-oVEMP in children group were significantly lower than adult group(P<0.01),but no differences were found in adult group regarding on the amplitude and interaural amplitude asymmetry ratio.In addition,with the in-crease of the intensity of galvanic stimulation,the correlation between pain scores and the elicitation rates of GVS-cVEMP and GVS-oVEMP also increased.Conclusion Using appropriate stimulus intensity and recording methods,GVS-cVEMP and GVS-oVEMP could be successfully assessed and detected in healthy children over 3 years old and adolescents.The latency of GVS-cVEMP in children is slightly shorter than that in adults,therefore we recommend selecting the matched age group for assessment in the children group.
2.Therapeutic Effect of Compound Wufengcao Liquid on Tuberculous Ulcer from Perspective of Macrophages
Jiayan QIAN ; Zihui HUANG ; Jiayue SUN ; Feiyun XU ; Yuling WANG ; Yang YU
Chinese Journal of Experimental Traditional Medical Formulae 2023;29(4):86-96
ObjectiveTo explore the clinical efficacy of compound Wufengcao liquid (CWL) on tuberculous ulcer and the influence on macrophage polarization. Method① Clinical experiment: A total of 145 patients with tuberculous ulcer who were treated in Nanjing Integrated Traditional Chinese and Western Medicine Hospital were randomized into observation group, control group Ⅰ, and control group Ⅱ according to the random number table method. In addition to the basic anti-tuberculosis chemotherapy, CWL, Kangfuxin liquid, and isoniazid solution (local external application) were respectively used in the observation group, control group Ⅰ, and control group Ⅱ. The treatment lasted 4 weeks for each group. The total effective rate in wound healing, traditional Chinese medicine(TCM) syndrome score, and histopathological morphology of wound were observed and the expression of inducible nitric oxide synthase (iNOS) and arginase-1 (Arg-1) in wound tissue was measured. ② Cell experiment: RAW264.7 cells were cultured in DMEM (10% fetal bovine serum, 1% double-antibody solution) in a cell incubator (37 °C, 5% CO2). Phorbol 12-myristate 13-acetate (PMA) was used to induce the differentiation of RAW264.7 cells into macrophages. Lipopolysaccharide (LPS) was employed to stimulate polarization of macrophages into M1 type and interleukin-4 (IL-4) to induce the polarization into M2 type. Kangfuxin solution, isoniazid solution, and CWL were respectively applied to the above cell model for 36 h. The cell supernatant was collected and centrifuged. Western blot was used to detect the protein expression of tumor necrosis factor-α (TNF-α), transforming growth factor-β (TGF-β), iNOS, and Arg-1, and flow cytometry (FCM) to detect the expression of CD86 and CD206. Result①Clinical experiment: The total effective rate in the CWL group [98.0% (48/49)] was higher than that in the control group Ⅰ [87.5% (42/48), χ2=3.962, P<0.05] and control group Ⅱ [83.3% (40/48), χ2=6.162, P<0.05]. After 28 days of treatment, compared with control group Ⅰ and control group Ⅱ, CWL decreased the TCM syndrome score (P<0.05) and obviously improved the histopathological morphology of the wound. Immunohistochemistry results showed that the iNOS expression in local focus tissue was lower (P<0.05) and the expression of Arg-1 was higher (P<0.05, P<0.01) in the CWL group than in the control group Ⅰ and control group Ⅱ after 28 days of treatment. ② Cell experiment: Western blot assay showed that the expression of iNOS and TNF-α in LPS group increased compared with that in the M0 group (P<0.01) and the expression in the LPS+ isoniazid group, LPS+ Kangfuxin group, and LPS+CWL group was lower than that in the LPS group (P<0.05). The expression of iNOS in LPS+Kangfuxin group and LPS+ CWL group was lower than that in the LPS+isoniazid group (P<0.05, P<0.01), and the expression of TNF-α in LPS+ CWL group was lower than that in LPS+isoniazid group (P<0.01). The expression of TNF-α in LPS+ CWL group decreased compared with that in the LPS+ Kangfuxin group (P<0.05). The expression of Arg-1 and TGF-β in IL-4 group was higher than that in the M0 group (P<0.01), and the expression in the IL-4+isoniazid group, IL-4+Kangfuxin group, and IL-4+ CWL group was higher than that in the IL-4 group (P<0.05). The expression of Arg-1 and TGF-β in the IL-4+ Kangfuxin group and IL-4+CWL group was higher than that in the IL-4+isoniazid group (P<0.05, P<0.01), and the expression was higher in the IL-4+CWL group than in the IL-4+Kangfuxin group (P<0.05, P<0.01). The FCM result showed that the expression of CD86 and CD206 in LPS group and IL-4 group was higher than that in M0 group (P<0.01). CD86 expression in LPS+isoniazid group, LPS+ Kangfuxin group, and LPS+CWL group was lower than that in the LPS group (P<0.01). The expression of CD86 in LPS+Kangfuxin group and LPS+ CWL group increased compared with that in the LPS+isoniazid group (P<0.01), and the expression was higher in the LPS+ CWL group than in the LPS+Kangfuxin group (P<0.01). CD206 expression in IL-4+ isoniazid group, IL-4+Kangfuxin liquor group, and IL-4+ CWL group was increased compared with that in the IL-4 group (P<0.01). CD206 expression in IL-4+Kangfuxin liquid group and IL-4+ CWL group was decreased compared with that in the IL-4+isoniazid group (P<0.01). CD206 expression in IL-4+CWL group was lower than that in the IL-4+ Kangfuxin group (P<0.05). ConclusionCWL can promote the healing of tuberculous ulcers, and the mechanism is that it inhibits the expression of iNOS, TNF-α, and CD86 and promotes the expression of Arg-1, TGF-β, and CD206, thereby regulating M1/M2 polarization balance.
3.Literature study on herbal medicine of Borneol
Wenying MA ; Hongli DOU ; Feiyun MA ; Yang NIU ; Haodong ZHANG
International Journal of Traditional Chinese Medicine 2021;43(10):945-950
As a collective noun of incense and medicine, fragrant medicine has long been integrated into Chinese culture. It is not only a symbol of the cultural exchange between China and foreign countries in the middle ancient times, but also plays a very important role in medicine and other fields. Among them, Borneol can not only be used for medicinal purposes, but also for incense and fumigation, as well as food, tea, wine and other applications. This paper intends to sort out the medicinal properties, effects and other applications of Borneol recorded in ancient books of traditional Chinese herbs in the past dynasties, focusing on summarizing its medicinal properties, meridians, effects, compatibility and application characteristics. In addition, modern pharmacological action was included as a supplement, in order to provide reference for the clinical use of Borneol in medicinal aspects.
4. Gastrodin combined with dexamethasone protects H9C2 cell from injury induced by oxygen-glucose deprivation
Wei WU ; Guangpeng LI ; Jiangbo ZHANG ; Lingyu KONG ; Junyan CAI ; Feiyun YANG
Chinese Journal of Clinical Pharmacology and Therapeutics 2021;26(11):1244-1249
AIM: To investigate the role and possible mechanism of gastrodin combined with dexamethasone in myocardial cell injury induced by oxygen-glucose deprivation. METHODS: Oxygen-glucose deprivation (OGD) model was established. The cells were divided into 5 groups: normal control group, OGD group, DEX group, GAS group and DEX+GAS group. The activity of myocardial cells was detected by CCK-8 test in each group. The activity of LDH was detected by colorimetry in each group. The apoptosis of myocardial cells was detected by TUNEL method in each group. The ELISA assay was used to detect the inflammatory factors in culture medium of myocardial cells in each group. Western blot was used to detect the expression of Notch1, Bax, Bcl-2 and Beclin1 in myocardial cells in each group.RESULTS: The results showed that GAS combined with DEX could significantly increase the activity of myocardial cells and decrease the apoptosis, reduce production of TNF-α, IL-6, IL-1β and promote production of IL-10, decrease the release of LDH significantly of myocardial cells induced by OGD. The results of Western blot showed that GAS combined with DEX increased the expression of Notch1, Bcl-2 and autophagy-related gene Beclin1, but decreased the expression of Bax of myocardial cells induced by OGD. CONCLUSION: The combination of GAS and DEX may promote autophagy and increase cell activity, inhibit apoptosis and inflammatory reaction by activating Notch signaling pathway, thereby reducing OGD-induced myocardial cells damage.
5.Discovery of the anti-angiogenesis effect of eltrombopag in breast cancer through targeting of HuR protein.
Yuying ZHU ; Liuqing YANG ; Jiazhen XU ; Xiyan YANG ; Pengwei LUAN ; Qianfei CUI ; Pei ZHANG ; Feiyun WANG ; Ruixiang LI ; Xinyue DING ; Lixian JIANG ; Guoqiang LIN ; Jiange ZHANG
Acta Pharmaceutica Sinica B 2020;10(8):1414-1425
HuR (human antigen R), an mRNA-binding protein responsible for poor prognosis in nearly all kinds of malignancies, is a potential anti-tumor target for drug development. While screening HuR inhibitors with a fluorescence polarization (FP) based high-throughput screening (HTS) system, the clinically used drug eltrombopag was identified. Activity of eltrombopag on molecular level was verified with FP, electrophoretic mobility shift assay (EMSA), simulation docking and surface plasmon resonance (SPR). Further, we showed that eltrombopag inhibited cell proliferation of multiple cancer cell lines and macrophages, and the anti-tumor activity was also demonstrated in a 4T1 tumor-bearing mouse model. The data showed that eltrombopag was efficient in reducing microvessels in tumor tissues. We then confirmed the HuR-dependent anti-angiogenesis effect of eltrombopag in 4T1 cells and RAW264.7 macrophages with qRT-PCR, HuR-overexpression and HuR-silencing assays, RNA stability assays, RNA immunoprecipitation and luciferase assays. Finally, we analyzed the anti-angiogenesis effect of eltrombopag on human umbilical vein endothelial cells (HUVECs) mediated by macrophages with cell scratch assay and Matrigel angiogenesis assay. With these data, we revealed the HuR-dependent anti-angiogenesis effect of eltrombopag in breast tumor, suggesting that the existing drug eltrombopag may be used as an anti-cancer drug.
6.Tap-hammer elicited vestibular-evoked myogenic potentials system: its design and preliminary application
Yuzhong ZHANG ; Pan XIONG ; Huandi ZHAO ; Zichen CHEN ; Xinyu WEI ; Qian LIU ; Feiyun CHEN ; Ying CHENG ; Juan HU ; Shuna LI ; Jun YANG ; Qing ZHANG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2020;55(10):957-961
Objective:The aim of this study was to design and perform "Tap-hammer"system that can be used to elicit vestibular evoked myogenic potentials (VEMP) in normal adults and to report the preliminary results of this system.Methods:A triggered Tap-hammer was designed, made and connected with an electric recording system, to form as a system for Tap-VEMP recording. Twenty healthy adult volunteers (7 males and 13 females, aged 20 to 37 years, 40 ears in total) were recruited for air-conducted sound VEMP (ACS-VEMP) and Tap-VEMP examinations. Waveforms and parameters of both VEMPs were recorded and analyzed. SPSS 22.0 software was used for statistical analysis.Results:The response rates of ACS-, Tap-ocular VEMP (oVEMP) and ACS-, Tap-cervical VEMP (cVEMP) were both 100% (40/40). The mean±SD n1 latency, p1 latency, n1-p1 interval, amplitude, and asymmetry ratio (AR%) of Tap-oVEMP were (9.80±2.51)ms, (13.90±3.26)ms, (4.09±1.43)ms, (16.43±9.61)μV, (22.68±17.35)% respectively. The mean±SD p1 latency, n1 latency, p1-n1 interval, amplitude, and asymmetry ratio (AR%) of Tap-cVEMP were (13.26±2.07)ms, (21.84±2.89)ms, (8.58±2.10)ms, (457.65±274.94)μV, (20.42±13.46)% respectively. Both n1 latency and p1 latency of Tap-VEMPs were shorter than those in ACS-VEMPs ( P<0.05). No statistical difference could be found between the two stimulation methods in the parameters of n1-p1 interval, amplitude, and asymmetry ratio( P>0.05). Conclusion:The Tap-hammer system can elicit VEMP responses in healthy young people. This system can be used as an alternative stimulation method for bone conduction VEMP.
7. Preliminary observation of galvanic vestibular stimulation-vestibular evoked myogenic potentials in healthy young people
Zichen CHEN ; Xinyu WEI ; Yuzhong ZHANG ; Ying CHENG ; Fangyuan YANG ; Chao ZHANG ; Feiyun CHEN ; Ying GAO ; Juan HU ; Min XU ; Qing ZHANG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2019;54(6):432-438
Objective:
To introduce the method of galvanic vestibular stimulation-vestibular evoked myogenic potentials (GVS-VEMP) as well as to observe and analyze the parameters and elicited rate of GVS-cVEMP and GVS-oVEMP in healthy young people in China.
Methods:
Twenty six normal young subjects were recruited for conventional examinations of GVS-VEMP. The subjects were 21-37 years old, average age was (25.8±3.7) years old, including 13 males and 13 females. The galvanic stimulation intensity of 3 mA/1 ms was used to evoke cVEMP and oVEMP on the sternocleidomastoid and inferior extraocular muscles respectively, and the intensity of stimulus was decreased until the response disappeared, the threshold, latency, amplitude, interval phase and interaural amplitude ratio(IAR) were calculated. SPSS18.0 software was used for statistical analysis.
Results:
All subjects were elicited normal GVS-cVEMP and GVS-oVEMP under 3 mA/1 ms, the elicited rate was 100%. The threshold of GVS-cVEMP was (1.18±0.47) mA, p1 latency was (10.43±1.54) ms, n1 latency was (17.91±1.20) ms, the amplitude was (102.47±56.77) uV and IAR was (0.26±0.20). The threshold of GVS-oVEMP was (1.12±0.50) mA, n1 latency was (8.46±1.05) ms, p1 latency was (11.83±1.27) ms, the amplitude was (9.12±6.82) uV and IAR was (0.25±0.20). In terms of gender and lateral comparison, only the GVS-oVEMP amplitude was higher for male than for female, which had significant statistical difference (
8. Establishment of experimental method for bone-conducted vibration elicited vestibular-evoked myogenic potentials in healthy guinea pigs
Zichen CHEN ; Juan HU ; Yuzhong ZHANG ; Xinyu WEI ; Yongzhi YANG ; Ying GAO ; Yong XU ; Ying CHENG ; Feiyun CHEN ; Min XU ; Qing ZHANG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2018;53(12):939-943
Objective:
To estabilsh animal methods of bone-conducted vibration elicited cervical vestibular-evoked myogenic potentials (BCV-cVEMP) and ocular vestibular-evoked myogenic potentials (BCV-oVEMP) in healthy guinea pigs.
Methods:
Eleven healthy (250-350 g) and awake guinea pigs were selected and undertake conventional BCV-cVEMP and BCV-oVEMP examination in prone position. Parameters of waveforms were cauculated.
Results:
The BCV-cVEMP and BCV-oVEMP both could be elicited in 100% (22/22) in guinea pigs respectively, threshold was (85.5±10.8)dB SPL and (90.7±10.6)dB SPL for cVEMP and oVEMP; n1 latency was (4.5±1.3)ms and (4.3±1.5)ms for cVEMP and oVEMP; p1 latency was (5.8±1.4)ms and (5.6±1.7)ms respectively; n1-p1 interwave latency was (1.2±0.4)ms for cVEMP and (1.4±0.6)ms for oVEMP, amplitude was (21.5±17.3)μV and (24.0±16.3)μV respectively.
Conclusion
Both BCV-cVEMP and BCV-oVEMP can be successfully elicited in healthy guinea pigs.
9.Advances in anti-staling brewer's yeast.
Jingjing YANG ; Jinjing WANG ; Yongxian LI ; Feiyun ZHENG ; Junhui ZHONG ; Qi LI
Chinese Journal of Biotechnology 2017;33(4):541-551
Brewer's yeast is crucial in beer fermentation, mainly beer flavor diversity and stability. Beer flavor stability is one of the most influential beer quality aspects, and screening or breeding brewer's yeast with enhanced anti-staling capacity will be an effective solution. In recent decades, with the progress of genetic engineering and detailed description of brewer's yeast genome, great efforts have been made to improve brewer's yeast. This review highlights recent advances in classical and genetic engineering improvement of yeasts to produce more antioxidant compounds or less beer aging substances and precursors. Therein, improvement targets, evaluation methods and development strategies of anti-staling brewer's yeast are also discussed. Furthermore, hotspot and future trend of anti-staling yeast strain development are also proposed.
10.Clinical application of human serum kallikrein 6 for the diagnosis and monitor of epithelial ovarian cancer
Xufang QIAN ; Xiaojun YANG ; Xiangxiang BAO ; Yunqin CHEN ; Feiyun ZHENG ; Cixia SHUAI ; Wenhui ZHANG
Journal of Chinese Physician 2009;11(6):734-737
Objective The aim of this study was to investigate the clinical value of human serum Kallikrein 6 for the diagnosis and monitor of pithelial ovarian cancer. Methods Serum levels of KLK6 were analyzed with ELISA in 30 cases of epithelial ovarian carcinoma, 20 cases of benign ovarian tumor and 30 cases of healthy women. In the meantime, serum CAi25 was determined with chemiluminescence. Furthermore, serum levels of KLK6 and CA125 were also detected in 12 case of epithelial ovarian carcinoma with the same methods one week and the 3rd month postoperation of follow-up. Results Serum levels of KLK6 in epithelial ovarian carcinoma was higher than that in benign ovarian tumor and healthy women (P < 0.05). KLK6 also showed positive correlation with clinical stage, cytological grade, pelvic lymph node metastasis, recurrent or dead disease (P < 0. 05). On the contrary, KLK6 showed no significant correlation with pathological types (P >0. 05). After surgery of follow-up, KLK6 and CA125 were significantly decreased in 12 case of epithelial ovarian carcinoma (P < 0. 05). Furthermore, the total sensitivity and specificity of KLK6 in the diagnosis of epithelial ovarian carcinoma was 73.3% and 85.0% respectively, followed by the sensitivity to be 50. 0% and 88. 9% for the diagnosis of stage Ⅰ-Ⅱand Ⅲ-Ⅳ disease. Conclusion Our resuits showed KLK6 may be one of the reliable indexes for the diagnosis and monitor of ovarian cancer.

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