1.A study on vowel duration and word length of adductor spasmodic dysphonia.
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2016;30(5):378-380
OBJECTIVE:
To understand the vowel duration and statement reading of the adductor spasmodic dysphonia (ADSD) patients compared with their normal controls, and provide ideas for clinical diagnosis and treatment.
METHOD:
Twenty-nine ADSD patients were included in the research, with 31 normal controls. All subjects filled in form voice handicap index (VHI) by themselves. Maximum phonetic time (MPT) and maximum loudness phonetic time(MLPT) were tested on /a/ sound for all patients. Also, all the patients were required to read aloud a standard mandarin assay named
Case-Control Studies
;
Dysphonia
;
diagnosis
;
Humans
;
Phonetics
;
Voice Quality
2.Compound erythromycin sustained release preparation and its in vitro release.
Haixia CHEN ; Zhipeng CHEN ; Qirong WANG ; Zekun LIU ; Quanlong MA
Acta Pharmaceutica Sinica 2011;46(11):1385-9
Using the weight-average molecular weight 50 000 polylactic acid (PLA) as a carrier, and a certain proportion of erythromycin (EM) and prednisone acetate (PNA) to mixed prepare the compound erythromycin sustained release preparation (sustained-release tablets). Using ultraviolet spectrophotometry and high performance liquid chromatography (HPLC) to detect separately the release amount of EM and PNA in vitro medium. The sustained-release tablets release for about 21 days, the average content of EM is 99.7 mg/table, RSD = 0.82%; and the average content of PNA is 10.03 mg/table, RSD = 0.93%. Within 21 days, the cumulative releases of EM and PNA are 86.1% and 78.3%, respectively. The drug release is steady and slow after 5 days, the burst release phenomenon in early stage is more significant. The results showed that the sustained-release tablet preparation method is feasible, the release performance is good and the clinical efficacy is significant.
3.Orbital fat flap for treating sunken upper eyelid in middle-aged and elder patients.
Shenghua LI ; Zhipeng CHEN ; Tao CHEN ; Zulie DING
Chinese Journal of Plastic Surgery 2014;30(6):414-417
OBJECTIVETo investigate the effect and its indication of orbital fat flap for treating sunken upper eyelid in middle-aged and elder patients.
METHODSThe upper middle orbital fat was transferred to the sunken area as a flat flap to correct Sunken upper eyelid at grade I, II, III. The depression depth was graded as I (<0.5 cm), as II (0.5-1.0 cm), as III ( >1.0 cm). From April 2011 to April 2012, 66 cases were treated and 49 cases were followed up for 12-15 months.
RESULTSAll patients with sunken upper eyelid were successfully treated using this procedure and no complications were encountered. Fat absorption was not observed. The effective rate was 90.9% (20/22) for grade I , 31.0% (18/58) for grade II and 0 for grade III (0/18), showing significant difference between any of two groups (P<0.05).
CONCLUSIONSThe orbital fat flap is effective for grade I Sunken upper eyelid with long- term effect.
Adipose Tissue ; transplantation ; Aged ; Blepharoplasty ; methods ; Eyelids ; surgery ; Female ; Humans ; Male ; Middle Aged ; Orbit ; Surgical Flaps ; transplantation
4.Microemulsion-based gel of fluorouracil for transdermal delivery.
Yanyu XIAO ; Fang LIU ; Zhipeng CHEN ; Qineng PING
Acta Pharmaceutica Sinica 2010;45(11):1440-6
This study is to prepare the microemulsion-based gel based on the W/O microemulsion and fluorouracil (5-Fu) as a model drug to study the transdermal characterization and observe its skin irritation of the microemulsion-based gel in vitro. IPM acted as oil phase, AOT as surfactant, Tween 85 as cosurfactant, water was added dropwise to the oil phase to prepare W/O microemulsion at room temperature using magnetic stirring, then 5-Fu powder was added. The gelatin was used as substrate to prepare 5-Fu microemulsion-based gel. The permeation flux of 5-Fu from 5-Fu microemulsion-based gel across excised mice skin was determined in vitro using Franz diffusion cell to study the influence of the amount of gelatin and the drug loading capacity. Refer to 5-Fu cream, the irritation of microemulsion and microemulsion-based gel on the rat skin was studied. Based on the water/AOT/Tween 85/IPM microemulsion, only the gelatin can form the microemulsion-based gel. At 25 degrees C, 32 degrees C and 40 degrees C, the amount of gelatin required for the formation of microemulsion-based gel were 7%, 14% and more than 17%, respectively. The 12 h transdermal cumulated permeation amount of 5-Fu from microemulsion-based gel containing 14% gelatin and 0.5% drug loading were (876.5 +/- 29.1) microg x cm(-2), 12.3 folds and 4.5 folds more than 0.5% 5-Fu aqueous solution and 2.5% (w/w) 5-Fu cream, respectively. Microemulsion-based gel exhibited some irritation, but could be subsided after drug withdrawal. Microemulsion-based gel may be a promising vehicle for transdermal delivery of 5-Fu and other hydrophilic drug.
5.Comparison of pemetrexed or paclitaxel combined with oxaliplatin treatment as a chemotherapy strategy for postoperative patients
Xiang TAI ; Manjun CHEN ; Wenjuan HONG ; Zhipeng HONG
Chongqing Medicine 2015;(35):4936-4939
Objective To compare the therapeutic efficacies and toxicities either of pemetrexed or paclitaxel combined with oxaliplatin as a chemotherapy in postoperative with non‐small‐cell lung cancer(NSCLC) .Methods The clinical data collected from 86 patients who admitted into the first affiliated hospital of Kunming medical university from January 2010 to December 2011 who had been diagnosed with non‐small‐cell lung cancer(NSCLC) were retrospectively analyzed .All of these patients received the radical resection of pulmonary carcinoma ,in which 65 patients received pemetrexed combined with oxaliplatin treatment(named as peme‐trexed combination group) .Another 40 patients were treated with paclitaxel combined with oxaliplatin (named as paclitaxel combi‐nation group) .Survival analysis was evaluated by Kaplan‐Merie .Single factor analysis and COX regression model were employed to analyze the relationship between the influencing factors and the prognosis of disease .Results We found that neither OS (χ2 =0 .648 ,P=0 .421) nor PFS(χ2 =0 .758 ,P=0 .384)was statistical different between two groups .However ,the incidence of leucope‐nia above Ⅲ degrees was 34 .8% in pemetrexed combination group ,and 60 .0% in paclitaxel combination group(χ2 = 5 .469 ,P=0 .019) .The incidence of of ALT increase above Ⅲ degrees was 12 .2% in pemetrexed combination group ,and 35 .0% in paclitaxel combination group(χ2 =7 .238 ,P=0 .007) .The incidence of AST increase rate above Ⅲ degrees was 13 .0% in pemetrexed combi‐nation group and 32 .5% in paclitaxel combination group(χ2 = 4 .706 ,P= 0 .030) .The incidence of neurotoxicity was 28 .2% in pemetrexed combined group ,65 .0% in paclitaxel combined group (χ2 = 11 .652 ,P= 11 .652) .The incidence of gastrointestinal tract reaction above Ⅲ degrees was 47 .8% in pemetrexed combined group ,57 .5% in paclitaxel combined group was ,(χ2 = 0 .803 , P=0 .370) .Cox regression analysis revealed that PS score(HR=0 .207 ,95% CI:0 .090-0 .479) and clinical stages(HR=0 .089 , 95% CI:0 .041-0 .191) had significant effects on survival of patients .Conclusion Two kinds of treatment in two groups showed the similar curative effects and promised to be first‐line chemotherapy strategy for postoperative patients with NSCLC .However , the pemetrexed combined group showed less drug toxicity compared with that of the paclitaxel combined group .
6.Survey and Suggestion for Ethical Review of Paediatric Clinical Trials
Ru DUAN ; Lan CHEN ; Qing HE ; Zhipeng ZHANG
Chinese Medical Ethics 2015;(4):628-631
This article surveyed the protocols and informed consent forms of 15 paediatric clinical trials which had been reviewed by the hospital′s institutional research board from 2008 to 2013 .This survey reevaluated and made suggestions on the protocols and informed consent forms, focusing on the risk level, protocol design back-ground, risk minimization measures, the required elements as well as the language expressions of informed consent forms and finding out the shortage of informed consent and give appropriate advices.
7.Establishing the Rat Model of Multi-infarct Dementia
Donghui WU ; Jinfeng HU ; Zhipeng LI ; Haijie JI ; Naihong CHEN
Chinese Journal of Rehabilitation Theory and Practice 2011;17(3):232-234
ObjectiveTo establish the rat model of multi-infarct dementia. MethodsSephadex (4 mg/ml, 8 mg/ml) was injected into the internal carotid artery through the common carotid artery. Neurological deficits were measured 24 h after the operation, and Morris water maze test as well as Nissl stain were observed 26~30 d after the operation. ResultsThere was significant difference between the model groups injected sephadex of 8 ml/ml and 4 mg/ml in the neurologic deficits. In the following experiment, the rats injected sephadex of 8 mg/ml were only used as model. For the water maze test, the escape latency was longer (P<0.01) and the frequency across target area reduced (P<0.01) in the model, while the apoptotic Nissl body could be observed. ConclusionA model of multi-infarct dementia could be established with the sephadex in rats.
8.miR-100 regulates cell growth through targeting FGFR3 in patients with pancreatic cancer
Meiyuan CHEN ; Chengyi SUN ; Chao YU ; Zhipeng LI ; Jianxin JIANG
Chinese Journal of Hepatobiliary Surgery 2016;22(2):116-120
Objective To investigate the effects of miR-100 on the proliferation of MIA PaCa-2 and CFPAC-1 cells through targeting fibroblast growth factor receptor 3 (FGFR3).Methods miR-100 expression levels in 17 cancer tissues and 17 nonmalignant tissues were examined by Real-time PCR.The effect of miR-100 overexpression on cell proliferation was examined by CCK-8 assay in vitro.Luciferase assay was used to confirm that miR-100 could directly target FGFR3.Real-time PCR and Western blot were used to examine the expression of FGFR3 in miR-100 overexpressing pancreatic cancer cells.The predicted target gene of miR-100,FGFR3,was downregulated by siRNA,and its effect on cell proliferation was also examined.Cell proliferation was analyzed using CCK-8 and Edu assay.Results miR-100 was lowly expressed in pancreatic cancer tissues (P < 0.05).In pancreatic cancer cells,the transfection of lv-miR-100 was able to upregulate the endogenous expression of miR-100 and inhibit the cell proliferation (P <0.05).Luciferase assay showed FGFR3 was the direct target of miR-1O0.FGFR3 was significantly downregulated by overexpressing miR-100 in pancreatic cancer cells (P <0.05),and FGFR3 knockdown by specific siRNA exerted the similar effect as miR-100 overexpression (P < 0.05).Conclusions Our study identified a new miRNA regulator,miR-100,and clarified a novel mechanism of how miR-100 regulates cell proliferation in pancreatic cancer.The strategy of overexpressing the tumor suppressor miR-100 may provide a new therapeutic approach for treating patients with pancreatic cancer.
9.Preparation of dry powder inhalation of yuanhuacine and its tissue distribution in rats
Man LI ; Jin'ao DUAN ; Rongfeng HU ; Zhipeng CHEN
Journal of China Pharmaceutical University 2017;48(3):297-304
The aim of the present study was to increase distribution of yuanhuacine in the lungs and achieve the purpose of reducing toxicity and increasing efficiency.Therefore,yuanhuacine was designed to be dry powder inhalers innovatively and directly delivered to the lungs.Accordingly,inhaled lactose was used as a carrier to adsorb yuanhuacine on the surface of lactose.Fine particle fraction (FPF) was utilized as evaluation index to filtrate the optimal prescription for pulmonary administration.Besides,an UHPLC-MS/MS method was established for the analysis of heart,liver,spleen,lung,kidney,brain and reproductive system of rats.Intravenous injection was taken as reference to investigate the distribution of yuanhuacine and calculate relevant targeting parameters.The experimental result indicated that the prescription (rough lactose ∶fine lactose =10 ∶ 1) has the highest FPF,which can be chosen as the most suitable prescription for pulmonary administration of yuanhuacine.Moreover,by comparing the distribution of yuanhuacine through pulmonary administration and intravenous injection,it was found that the concentration of yuanhuacine in the lung tissue was greatly increased by pulmonary administration,which decreased the distribution in heart,liver,spleen,kidney,brain and reproductive system,thus sequentially reducing the toxicity in other tissues and increased the efficiency.
10.Application of hemi-hepatic blood flow occlusion through descending hilar plate in laparoscopic anatomic hepatectomy
Yingjun CHEN ; Zuojun ZHEN ; Zhipeng WU ; Yintao HE
Chinese Journal of Digestive Surgery 2015;14(4):339-343
Objective To explore the application value of hemi-hepatic blood flow occlusion through descending hilar plate in laparoscopic anatomic hepatectomy.Methods The clinical data of 15 patients who underwent laparoscopic anatomic hepatectomy by hemi-hepatic blood flow occlusion using descending hilar plate technique at the First People's hospital of Foshan between August 2012 and May 2014 were retrospectively analyzed.The hilar plate was bluntly dissected to expose the left and right Glissonean pedicles.Either side of Glissonean pedicle was tied up with a turnable aspirator with a cotton rope or shoelace and then bypassed the back of hilar plate.Anatomic hepatectomy was performed when hemi-hepatic blood flow was occluded.The follow-up by telephone interview and outpatient examination was done till October 2014.Results Among the 15 patients,the conversion to open surgery was done in 1 patient,Pringle maneuver in 1 patient,and hemi-hepatic blood flow occlusion by descending the hilar plate in 14 patients.Thirteen patients received succesfully laparoscopic anatomic hepatectomy by hemi-hepatic blood flow occlusion using descending hilar plate technique,including 4 of left hemihepatectomy,4 of left lateral lobectomy,2 of right hemihepatectomy,1 of right posterior lobectomy,1 of segment Ⅳ hepatectomy and 1 of segment Ⅵ hepatectomy.Bile duct exploration was applied to 4 patients with left hepatic duct stones and T-tube was placed in 2 patients.Nine and 4 patients received left and right hemi-hepatic blood flow occlusion,respectively.The operation time,mean volume of intraoperative blood loss and time of hemi-hepatic blood flow occlusion in 13 patients were (196 ±63)minutes,320 mL (range,50-1 200 mL) and (51 ± 20)minutes,respectively.The time of descending the hilar plate in 14 patients was (10 ±4)minutes.Among the 13 patients,bile leakage was detected in 1 patient with a maximum volume of drainage of 120 mL/day,liver wound bleeding in 1 patient with a volume of abdominal bloodstained drainage of 400 mL at postoperative day 2.Two patients were cured by conservative treatment,and no liver failure and perioperative death were occurred.The duration of hospital stay was (6.9 ± 2.4)days.Among the 15 patients,2 patients were loss to follow-up and other patients were followed up for 5-26 months with good survival,1 patient died.Conclusion Hemi-hepatic blood flow occlusion through descending hilar plate in laparoscopic anatomic hepatectomy is safe and feasible.