1.EFFECTS OF IRON EFICIENCY OF COCHLEAR STRUCTURE AND FUNCTIONS IN RATS
Academic Journal of Second Military Medical University 1985;0(05):-
To investigate the effects of iron deficiency on cochlear structure and functions, an auditory electrophysiological and histopathological study was conducted in the rats which were fed with either a basic Fe-deficient diet or a standard diet.It was found in iron-deficient rats that the incidence of threshold elevation (more than 15 dB) in both auditory brain-stem response and electrocochleogram-N1Was 31.85%, and cochlear histopathological changes were stria atrophy and reduction of spiral ganglion cells. No change was found in the controls.These findings suggest that iron deficiency could be a direct cause of sensorineural hearing loss, or could provide a pathological basis for cochlear deafness.
2.A REPORT ON THE MEASUREMENT OF SERUM Fe CONCENTRATION IN 240 CASES OF SENSORINEURAL DEAFNESS
Academic Journal of Second Military Medical University 1981;0(03):-
Measurement of serum Fe concentration and its physiologic variation were carried out in 240 cases with sensorineural deafness and 60 healthy subjects.The mean value and standard deviation of serum Fe concentration was 148.17?37. 64?g/dl in normal individual and 115.19?16.98?g/dl in the patients with senso-rineural deafness.The difference in serum Fe concentration between the above two groups was highly significant statistically(p
3.Comparison of effects of nasal endoscopic adenoid body excision and conventional adenoid body shaving in the treatment of adenoid hypertrophy
Chinese Journal of Primary Medicine and Pharmacy 2017;24(19):2985-2988
Objective To compare the effect of adenoidectomy with adenoidectomy under nasal endoscope in the treatment of adenoid hypertrophy.Methods 120 cases with adenoid hypertrophy were selected as the research subjects.The patients were randomly divided into two groups by random number table,and the control group(n =60) was treated with routine adenoidectomy.The surgical treatment of the observation group(n =60) was performed under nasal endoscope.Surgical treatment,surgery related indicators (operative time,the average amount of bleeding,hospitalization time and the incidence of postoperative complications) were compared between the two groups.Before and after operation,acoustic rhinometry examination of nasopharynx was used to detect the smallest cross-sectional area and compared.Results In the observation group,the operation time,the average amount of bleeding,hospitalization time and incidence rate of postoperative complication were (5.32 ± 2.05) min,(51.05 ± 8.26) mL,(8.50 ± 2.50) d,15.00%,respectively,which in the control group were (8.56 ± 2.68) min,(78.45 ± 10.15) mL,(12.00 ± 3.50) d,36.67 %,respectively,there were significant differences between the two groups (t =7.44,15.98,6.30,x2 =7.35,all P <0.05).12 months after surgery,the nasal minimal cross-sectional area of nasal pharynx in the observation group was (1.99 ± 0.51) cm2,which of the control group was (1.81 ± 0.48) cm2,there was significant difference between the two groups(t =3.99,P < 0.05).Conclusion Compared with conventional adenoidectomy,endoscopic adenoidectomy in the treatment of adenoid hypertrophy has good clinical curative effect,less bleeding,shorter operative time and less postoperative complications and other advantages,it is worthy of promotion.
4.The study of antiplatelet aggregation activity of small dose clopidogrel combined with paeonol
Acta Universitatis Medicinalis Anhui 2014;(6):777-779,784
Objective To investigate the antiplatelet aggregation activity of clopidogrel ( small dose) combined with paeonol. Methods Antiplatelet aggregation activity was evaluated by platelet aggregation induced by adenosine diphosphate in vitro, the weight of arteriovenous bypass thrombosis in rats and bleeding time in mice. Results The combination significantly inhibited platelet aggregation, and reduced formation of arteriovenous bypass thrombosis as well as prolonged the bleeding time. Moreover, the activity of combined group was more superior to clopidogrel and paeonol, respectively. Conclusion The antiplatelet aggregation activity of the combination is better than clopi-dogrel, which has bright prospects in clinical applications.
5.Clinical efficacy of emedastine difumarate combined with pranoprofen eye drops in allergic conjunctivitis and its influence on related indicators
Liangliang SUN ; Zheng ZHANG ; Aihua WU
Chinese Journal of Biochemical Pharmaceutics 2017;37(3):219-221
Objective To evaluate the clinical effect of emedastine difumarate eye drops combined with pranoprofen eye drops on histamine (HA), eosinophil cationic protein (ECP), leukotrienes B4(LTB4) and, IgE levels of allergic conjunctival and provide reference for clinical diagnosis and treatment.Methods 76 cases of patients with allergic conjunctivitis were randomly divided into control group and experimental group , control group were treated with fumaric acid emedastine eye drops, experimental group were treated with fumarate emedastine combined with pranoprofen eye drops, and then compare the efficacy and serum ECP, HA, LTB4 and IgE levels between two groups before and after treatment of the symptoms and signs score . Results The total efficacy of experimental group was significantly higher than that in control group (94.70%vs.81.60%)(P<0.05).The serum ECP, HA, LTB4 and IgE levels of experimental group were significantly lower than those in control group(P<0.05).Conclusion The emedastine difumarate combined with pranoprofen eye drops in the treatment of allergic conjunctivitis is better than single medication, and ECP, HA, LTB4, IgE significantly decrease.
6.Modification and evaluation of ameliorative oxygen-induced retinopathy mouse model
Aihua, LIU ; Jing, SUN ; Hong, ZHANG
Chinese Journal of Experimental Ophthalmology 2015;33(12):1108-1112
Background Retinal neovascularization is associated with various disorders.Studying the pathogenesis of retinal neovascularization is of important significance.Oxygen-induced retinopathy(OIR) mouse model is a common animal model for the study of retinal neovascular diseases.However, conventional modeling methods usually cause high animal mortality and low rate of success.Objective This study aimed to establish a modified method of mouse OIR model.Methods Eighty 1-week-old SPF C57BL/6J mice were randomly divided into normal control group and OIR group with 40 mice for each.The newborn mice of the normal control group were kept in a normal air environment with their breast-feeding mothers, but the mice of postnatal 2 days (P2) in the OIR group were raised with two litters per cage until P7.The P7 mice exposed to oxygen tank containing 80% oxygen together with one or another mother mouse alternately daily for 5 days and then returned to the normal air environment.The success rate of modeling,mortality rate of maternal mice and survival rate of immature mice were evaluated.The mixed solution of fluorescein isothiocyanate (FITC) and PBS with 4% paraformaldehyde was infused into the hearts of P12, P14,P17 and P21 mice and the eyeballs were obtained after the mice were sacrificed for histopathological examination of retinas and preparation of retinal flatmounts.The number of vascular endothelial cells extending inner limiting membrane was counted and the distribution of retinal vessels was evaluated.The use and care of the animals complied with the Statement of ARVO.Results The survival rate of the neonatal mice was 100% both in the normal control group and the OIR group,and the survival rate of maternal mice was 85.7% in the OIR group.Retinal new vessels were found in the mice of the OIR group,with the success rate of modeling 100%.The retinal vessels distributed from optical disc toward periphery in P14 mice in the normal group.However,in the OIR group,non-perfusion area at the posterior pole was seen in P12 mice,new blood vessels at the periphery were found in P14 mice, neovascularization at the junction area between vascular area and non-perfusion area as well as leakages were exhibited in P17 mice,and less non-perfusion area and new vessels were seen in P21 mice.Retinal inner limiting membrane was smooth in the mice of the normal group, and the vascular endothelial cell nucleus extending inner limiting membrane were seen in P12 mice and peaked in P17 mice.The vascular endothelial cell nucleus were (11.44±2.01), (31.24±1.50) and (9.23-±1.12)/slide in P14, P17 and P21 mice in the OIR group,which were significantly more than (0.27±0.14) , (0.30±0.11) and (0.32±0.16)/slide in P14, P17 and P21 mice in the normal group (t=47.90,61.30,40.70,all at P<0.05).Conclusions The method of OIR modeling is modified by alternating maternal mice,exposing to 80% oxygen-nitrogen mixture gas and cohabitating immature mice.Modified modeling method is simple with the low death rate of maternal mice and stable OIR phenotype.
7.The relationship between work engagement and work-related flow experience among nurses
Aihua SUN ; Jing ZHAO ; Qian XIAO
Chinese Journal of Practical Nursing 2015;31(11):837-840
Objective To describe the status of nurse work engagement and to explore the relationship between work engagement and work-related flow experience.The study results provided the basis for how the nurse managers stimulate enthusiasm of nurses and let them devote themselves to work.Methods A convenience sample of 127 nurses from one major hospitals in Beijing city was recruited.Work Engagement Scale and Work-related Flow Experience Questionnaire were used in this study.Results The scores of work engagement were (3.18±0.59),at moderate level.Age,education level and professional titles were the influential factors of nurses' work engagement.The scores of work-related flow experience were (3.48±0.45),at moderate level.The scores of clear goals,focus on tasks,balance of skills and challenges were the top three dimensions of the work-related Flow Experience Questionnaire.Except for the two dimensions,the integration of action and awareness and the weakening of self-awareness,other dimensions of the work-related flow experience appeared statistically significant correlation to the scores of work engagement (P<0.05 or P<0.01).Most were moderate positive correlations.Conclusions Both the work engagement and the work-related flow experience are at moderate level.The nurse managers needed to take active measures to enable nurses to have more positive experiences and happiness,so as to enhance nursing work input,to improve quality of care and job satisfaction.
8.Correlation of two-component signaling system ComD/ComE and β-lactam antibiotics resistance of Streptococcus pneumoniae
Huan FAN ; Jie YAN ; Aihua SUN
Chinese Journal of Microbiology and Immunology 2010;30(11):1038-1043
Objective To generate a comD gene knock-out mutant of Streptococcus pneumoniae,and determine the correlation of comD gene and the bacterial resistance against β-lactam antibiotics and understand the effect of closantel down-regulating comD, comE and comC mRNA levels. Methods A suicide plasmid pEVP3comD was constructed for comD gene knock-out and a comD gene knock-out mutant (comD-)was generated through homologous recombination and insertion inactivation. PCR and immunofluorescence method were used to identify the comD- mutant and real-time fluorescence quantitative PCR was applied to detect the changes of comD, comE and comC mRNA levels before and after closantel treatment in comD-mutant and wild-type strain. Double agar dilution method was performed to determine the sensitivity of comD- mutant and wild-type strain to penicillin G and cefotaxime. Results The comD gene in genome DNA of the generated comD- mutant was inactivated by sequencing and immunofluorescence detection. 50 μ mol/L or 100 μmol/L closantel had a function to down-regulate the comD, comE and comC mRNA levels ( P < 0. 05) whereas 25 μmol/L closantel did not. Both the MIC values of penicillin G and cefotaxime inhibiting comD- mutant were 32 μg/ml which was significantly higher than that of wild-type strain (0.06 μg/ml and 1 μg/ml). Conclusion In this study a comD gene knock-out mutant of S. pneumoniae was successfully generated. There is a close correlation between comD gene and β-lactam antibiotics resistance of S. pneumoniae. Closantel has a function to inhibit the competence formation of S. pneumoniae through down-regulating the transcription levels of comD, comE and comC genes.
9.Experience of Percutanous Coronary Intervention in 57 Cases with Chronical Total Occlusion
Xiaoning SUN ; Zhengang ZHANG ; Aihua LI
Chinese Journal of Prevention and Control of Chronic Diseases 2006;0(01):-
Objective To explore clinical characteristics of chronic total occlusion(CTO) in population with routine coronary angiography,and to cumulate therapeutic experience.Methods Retrospective analysis was performed on clinical data of 57 cases with CTO selected from 825 patients undergone coronary angiography.Results Among 57 cases,the percentage of male,myocaridial infarction,diabetes mellitus,hyperlipidermia and left ventricular dysfunction was 73.7%,84.2%,22.8%,73.7% and 22.8%,respectively.The types of lesions included single branch(n=11),double branches(n=29) and three branches(n=17).Of 70 branches lesion vessels,44 were TIMI 0 of blood flow classification and 26 were TIMI1.The position of lesions occurred at left anterior descending branch(n=32),left circumflex branch(n=16),right coronary artery(n=22).The occlusion time was less than three months(n=41) and more than three months(n=29).The lengths of lesion was divided into less than 20 mm(n=43) and more than 20 mm(n=27).The shapes of terminal lesion looked like rat-tail(n=42) and blaze knife-edge(n=28).The coronary stents were performed at 57 lesions among 70 branches and the successful rate of operation was 82.9%.Conclusions Timely coronary angiography and selecting suitable treatment on different kinds of lesions for male patients with myocardial infraction,especially complicated with diabetes mellitus,might play important roles in prevention of CTO and in improvement of the successful rate of percutanous coronary intervention for the complex lesion.
10.The diagnostic significance of ankle-brachial index in diabetic arterial disease
Aihua SHANG ; Bingquan YANG ; Zilin SUN
Journal of Interventional Radiology 2001;0(05):-
Ankle brachial index(ABI),as a non-invasive and simple detection method,can be used to accurately assess and diagnose the severities and prognosis of the diabetic lower extremity arterial disease,cardiovascular and cerebral vascular diseases.