1.An Experimental Study on the Protective Effect of Mild Hypothermia on the Hypoxic-ischemic Brain Injury
Mei QIN ; Xinghe WANG ; Lian CHEN
Chinese Journal of Perinatal Medicine 1998;0(02):-
Objective To investigate the optimal mild hypothermia course and cerebral temperature of the neonatal rats after hypoxic-ischemic brain injury. Methods The posthypoxic-ischemic rats of experimental group (n=60) were placed in the glass jars immeresd in water bath held constaut at either 29 C or 3l C for 24h, 48h or 72h. While the rats of room temperature group (n=22) were stayed in room air. Blood glucose, blood gases and neuropathology findings were studied to determine the therapeutic effects. Results The brain temperature droped 3C or 5C when enviro ment temperature was 31C or 29C respectively. The blood glucose remained normal. Neuropathology findings reveled that the brain damage of experimental rats reduced 46%~86% compared to the room temperature group. Conclusion Reducing the cerebral temperature by 4~5 C for 72 hours after hypoxic-ischemic brain injury can lead to superior protective effect.
2.The impact of health education and standard treatments on the life quality of asthmatic children
Qin HU ; Jinmei LIAN ; Xiaoling CHEN
Journal of Chinese Physician 2013;(2):163-166
Objective To investigate the impact of health education and standard treatments on the life quality of asthmatic children.Methods We conducted clinic treatments of 110 cases of asthmatic children lasting for 6 months,which were divided into standard treatment and health education group with 60 cases and group without standard treatment and health education with 50 cases.We emphasized the education management on cases in experimental group,which strictly obeyed the Global Initiative for Asthma (GINA) to formulate classified treatments as well as regular follow-up.Control group received the same treatments as experimental group yet without emphasizing health education about asthma on parents,which was accompanied with irregular follow-up.We compared the before-treatment and after-treatment life-quality and lung functions of asthmatic children.Moreover,we used Pediatric Asthma Quality of Life Questionnaire (PAQLQ) to evaluate the before-treatment and after-treatment life quality of asthmatic children.Results After follow-up lasting for 6 months,the treatments of experiment group had obvious improvements (P <0.01).The improvements of peak expiratory flow (PEF) of lung function test and timed vital capacity of the first second (FEV1) of experimental group were also better than the improvements of these two metrics of control group (P < 0.01).In addition,after 6 months,in both all dimensions of PAQLQ and total score,the differences between before and after treatment of experimental group were significant (P < 0.01,P < 0.05) ; and the differences between experimental group and control group were also significant in both all dimensions of PAQLQ score (12.4 ±2.1) and total score comparing to the control group (8.1 ±2.3),and the differences are also significant (t =2.5,P < 0.01).Conclusions Health education and standard treatments significantly improved the life quality of asthmatic children with a good compliance of treatment and a low recurrence rate,which is worth of popularizing.
3.Short-tern efficacy of conbercept versus ranibizumab for macular edema in central retinal vein occlusion
Haiyan LIAN ; Yanping SONG ; Qin DING ; Zhongshan CHEN
Chinese Journal of Ocular Fundus Diseases 2016;32(4):367-371
Objective To compare the short-term efficacy of conbercept and ranibizumab for macular edema in central retinal vein occlusion (CRVO)and explore the relationship between the integrity of ellipsoidal zone and visual acuity.Methods Forty-four eyes of 44 patients with macular edema in CRVO were enrolled into this retrospective and comparative study.There were 15 eyes of 15 males,29 eyes of 29 females;age ranged from 49-61 years old,with an average age of (54.65±3.10) years.All patients were examined with best-corrected visual acuity (BCVA),intraocular pressure (IOP),slit lamp,fundus photograph,fundus fluorescein angiography (FFA),optical coherence tomography(OCT).BCVA were examined with interactional visual chart and recorded with logarithm of the minimum angle of resolution acuity.Twenty-three eyes were intravitreal injected with conbercept 0.5 mg (group A) and 21 eyes were intravitreal injected with ranibizumab 0.5 mg (group B).There was no statistical difference of age (t =-1.41),gender (x2 =0.55),the percentage of hypertension patients (x2 =0.27),average BCVA (t =-2.06),IOP (t=-2.52),central macular thickness (CMT) (t=-1.96),number of different integrity of ellipsoidal zone patients (x2 =1.00) and number of different types of macular edema patients (x2 =1.03)among the two groups (P>0.05).The change in BCV.A.and CMT at 3,6 months between the two groups were compared.The relationship between BCVA at 6 months and BCVA,CMT at baseline were explored.The relationship between three groups of ellipsoidal zone and BCVA at baseline were evaluated.The change of BCVA after treatment between the three groups of ellipsoidal zone were Compared.The number of intravitreal injections between two groups was compared.Results During the 3,6 months after treatment,the mean BCVA were all improved with statistically difference in group A 0=5.13,7.39;P<0.05) and group B (t=6.60,11.52;P<0.05).There was no significant difference of BCVA at 3,6 moths between group A and group B (t=-0.99,-0.40;P>0.05).During the 3,6 months after treatment,the mean CMT were all decreased with statistically difference in group A (t=11.58,i5.96;P<0.05) and group B (t=18.77,35.16;P<0.05).There was no significant difference of CMT at 3,6 months between group A and group B (t=-1.52,-1.63;P>0.05).In both groups,BCVA at 6 months was related to BCVA at baseline (r=0.44,0.62;P<0.05),but not related to CMT at baseline (r=0.19,0.01;P>0.05).In the two groups,BCVA at baseline was related to the integrity of ellipsoidal zone (r=0.97,0.70;P<0.05).There was statistical difference of the number of intravitreal injections in the two groups (t =-6.88,P<0.05).There was no systemic or ocular serious side effects during the follow up.Conclusions Comparing to ranibizumab,conbercept has the same effective to the treatment of macular edema in CRVO,but the number of intravitreal injections is less.The integrity of ellipsoidal zone is related to BCVA.
4.Investigation on medical cost of 72 patients with panic disorder
Wei-Xing CHEN ; Liang LI ; Qin-Lian ZHAO ; Jiang TAN ;
Chinese Journal of Primary Medicine and Pharmacy 2006;0(12):-
Objective To investigate the medical cost of 72 patients with panic disorder and efficacy of paroxetine(SSRIs)in the treatment.Methods The course,medical cost,types and times of main examination of all 72 patients were reviewed and analyzed.The effect of paroxetine on the patients was studied in terms of anxiety and depression scale.Results The 72 patients had long course,high medical cost and received many unnecessary medical examinations.Paroxerine was effective on patients with panic disorder in light of anxiety and depression scale.Con- clusion Patients with panic disorder had long course and spent much unnecessany money before final diagnosis. Paroxetine was useful and safe in the treatment of panic disorder.
5.Evalue of Sleep-Deprivation Electroencephalography in Diagnosis of Partial Seizures in Children
lian-hong, CHEN ; qing-zhong, PANG ; yan-fen, LU ; li-qin, CHEN
Journal of Applied Clinical Pediatrics 2004;0(09):-
Objective To evaluate the sensitivity of sleep-deprivation electroencephalography(EEG) examination in diagnosis of partial seizures of children.Methods One hundred and six normal children (male 57,female 49, 3-12 years old)and 102 children suspected of epilepsy but with normal in standard EEG examination were selected at random(male 63,female 39,3-12 years old). Sleep-deprivation EEG was performed individually.Periods of sleep-deprivation were 18-20 hours for children below 7 years old and 24 hours for the older ones.Results The EEG showed slowing of background electric activity. In addition, 57 cases showed spindle/sharp-slow wave complex.The rate of EEG abnormality was 55.88%.The rates of EEG abnormality for partial seizures and generalized seizure were 76.32% and 43.8%,respectively(?~2=8.98 P
6.Value of Sleep-Deprivation Electroencephalography in Children with Nonepileptic Seizures
lian-hong, CHEN ; qing-zhong, PANG ; yan-fen, LU ; li-qin, CHEN
Journal of Applied Clinical Pediatrics 1986;0(02):-
Objective To compare the sensitivity of sleep-deprivation electroencephalography(EEG)examination on children suffered with nonepileptic seizures in normal and suspected epileptic in children.Methods Thirty -eight children with nonepileptic seizures (male 13,female 25,age 4-12 years, mean 8.1 years) had induced a person to make a confession. One hundred and six normal children (male 57, female 49, age 3-12 years,mean 7.6 years) and 102 children(male 63,female 39,age 3-12 years,mean 7.3 years)suspected of epilepsy clinically but with normal standard EEG examination were selected at random as controls.Sleep-deprivation EEG was performed individually.Results The sleep deprivation EEG showed slow background electric activity in all 3 groups. In addition, the rates of EEG abnorma lity for nonepileptic seizures group were zero,no statistics were computed because F was a constant. Fifty-seven cases showed spindle/sharp-slow wave complex in suspected epileptic children.The rate of EEG abnormality was 55.9%.The rate of EEG abnormality for normal control group was 1.9 %.There were significant difference among 3 groups (?2=97.3 P
8.Correlation between plasma asymmetric dimethylarginine and essential hypertension of Kazak and Han nationalities in Xinjiang
Lian QIN ; Zhong WANG ; Li WANG ; Shaoze CHEN ; Hui TANG ; Juncang DUAN ; Hongqiang REN
Chongqing Medicine 2015;(15):2072-2075
Objective To explore the correlation between plasma asymmetric dimethylarginin(ADMA) and essential hyper‐tention(EH) by comparing the difference of plasma asymmetric dimethylarginine levels between Kazak and Han patients with EH in Xinjiang .Methods 91 Kazak and 112 Han patients with EH were selected .81 Kazak and 110 Han healthy people were selected as healthy control groups .The plasma ADMA levels in EH groups and the control groups were measured by using the reverse phase‐high performance liquid chromatography (RP‐HPLC) .Meanwhile the liver function ,renal function ,blood lipids ,blood glucose and fructosamine were measured .Results Kazak and Han patients with EH had higher levels of plasma ADMA than the control groups (P<0 .01);there was a positive correlation between the plasma ADMA and blood pressure levels of EH patients in two na‐tionalities(r=0 .715 ,P<0 .01 for Kazak ;r=0 .645 ,P<0 .01 for Han) .Conclusion Both Kazak and Han patients with EH have higher levels of ADMA than the respective healthy control group in Xinjiang .The correlation between the plasma levels of ADMA and EH existed ,which indicate that ADMA might be involved in the occurrence and development of EH .
9.Tissue-engineered soft tissue oriented manufacturing technologies and additive manufacturing
Qin LIAN ; Dichen LI ; Cheng CHEN ; Weijie ZHANG ; Yaxiong LIU ; Jiankang HE ; Zhongmin JIN
Chinese Journal of Tissue Engineering Research 2014;(8):1263-1269
BACKGROUND:In recent years, many manufacturing techniques have been recently developed for soft tissue engineering scaffolds. Especialy additive manufacturing with a unique material accumulated forming principle can be feasible and reliable to manufacture the highly precise scaffolds with gradient structures and multi-materials for large soft tissue defect repairing.
OBJECTIVE:To summarize scaffolds manufacturing technologies in the soft tissue engineering applications developed in recent years and to predict the direction of development.
METHODS: A retrieval was performed for the literature about the manufacturing methods of soft tissue scaffolds using key words of “additive manufacturing, microfabrication, vascular tissue engineering, muscle tissue engineering, cartilage tissue engineering, stereolithography, 3D printing, biodegradable hydrogel” in English and Chinese, which were published between January 2010 and September 2013 in PubMed Database and China National Knowledge Infrastructure (CNKI) Database.
RESULTS AND CONCLUSION:For large soft tissue defects repairing, structure design of the scaffolds has been shifted from a simple planar structure to a more complex three-dimensional structure, and integration of scaffold structure, materials and cels, and growth factors during the manufacturing procedure can be used to obtain the resolution of vascularization. Additive manufacturings become one of the most promising approaches for the ideal soft tissue scaffolds with gradient and complex structure and multi-materials. In particular, the hydrogel/cellcomposite scaffolds fabrication, a hot but promising approach to develop the soft tissue engineering wil be made progress by the accurate principles and processes of the hydrogel additive manufacturing combined with the introduction of living cels and growth factors.
10.Experimental Research of Effect and Mechanism of Liangxue Tongyu Recipe on Acute Cerebral Hemorrhage in Rats
Yexiang CHEN ; Guochun LI ; Li XU ; Lian YIN ; Junqin WANG ; Lei QIN ; Delin LIU
Journal of Guangzhou University of Traditional Chinese Medicine 2016;33(5):683-687
Objective To observe the effect and mechanism of extracts of Liangxue Tongyu Recipe(LTR) on acute cerebral hemorrhage rats. Methods Twelve SD rats were randomly divided into sham operation group, model group, LTR water-extract group and LTR alcohol-extract group. Rats of sham operation group were injected with 2μL of normal saline into the left caudate nucleus, and rats of the other groups were injected with 2μL (0.25 U/ μL) of type Ⅶ collagenase into the left caudate nucleus to induce the model of acute cerebral hemorrhage. And then the rats of LTR groups were given intra-gastric gavage of LTR water-extract or LTR alcohol-extract. At the end of the experiment, we observed the macroscopic features of rat brain, pathological changes in rat brain under microscope after HE staining, awake time, rectal temperature, neurobehavioral scores and serum-specific enolase (NSE) level. Results Rats except for the sham operation group had various degrees of right hemiplegia symptoms, and the symptoms became severest on the third day of experiment. LTR alcohol-extract group and water-extract group had an effect on improving neurobehavioral scores, shortening awake time, and decreasing rectal temperature and serum NSE level of model rats. Conclusion LTR alcohol-extract and water-extract can relieve acute cerebral hemorrhage induced by type Ⅶcollagenase .