1.Effect of carbon dioxide pneumoperitoneum and enteric disturbance on stress responses in rats: An experimental study
Chinese Journal of Minimally Invasive Surgery 2001;0(02):-
Objective To study the effect of CO 2 pneumoperitoneum and enteric disturbance on serum ?-endorphin (?-EP) in SD rats, in order to investigate their influence on peri-operative stress responses in SD rats. Methods A total of 120 SPF-grade male SD rats were randomly divided into four groups with 30 rats in each group. The four groups received CO 2 pneumoperitoneum (Group A), a 5 cm abdominal incision (Group B), a 5 cm abdominal incision with gastroenteric disturbance (Group C), and intraperitoneal anesthesia (Group D or Control Group), respectively. Concentrations of serum ?-EP of these groups were measured 10 min, 20 min, and 40 min after the beginning of surgery, respectively. Results Concentrations of serum ?-EP in the Group A 10 min, 20 min, and 40 min after the beginning of surgery were 274 7?66 6 pg/dl, 157 3?63 8 pg/dl, and 163 9?74 5 pg/dl, respectively, which were all extremely significantly higher than those in the Control Group ( P
3.MRI Diagnosis and Differential Diagnosis of Intracranial Germ Cell Tumours
Xiaodong ZHANG ; Yikai XU ; Gang DUAN
Journal of Practical Radiology 2001;0(01):-
Objective To analyse and conclude the MRI features of intracranial germ cell tumours so that to improve the diagnosis of this disease.Methods 15 cases of germ cell tumours verified by operation and pathology were reviewed and analyzed. All cases were undergone plain and contrast-enhanced MRI,the fat restrained sequence was performed if necessary. Results The location of tumors,six were in pineal region, six were in sellar region (germinoma, teratoma and choriocarcinoma in pineal and sellar region were all separately 3, 2 and 1), two were in basal ganglia (germinoma), and one was in right lateral ventricle (teratoma).Conclusion MRI is very valuable in the diagnosis and differential diagnosis of intracranial germ cell tumours.
4.The role of adipose tissue in the progress of acute pancreatitis
Fengzhi QU ; Pengyu DUAN ; Gang WANG ; Bei SUN
Chinese Journal of Hepatobiliary Surgery 2017;23(7):499-502
Obesity is an independent risk factor for acute pancreatitis (AP),and the morbidity risk and severity of AP in obese patients were significantly increased than those in non-obese patients.However,the exact mechanism has not been fully elucidated.In recent years,the researches on the role of adipose tissue (AT) in AP have gradually attracted wide attention of scholars both at home and abroad.To better understand the pathogenesis and new therapeutic targets of AP,in this paper,we overviewed the recent research progress on the role of AT in AP.
5.Effect of Endoscopic Sinus Surgery in the Treatment of Sinusitis and Nasal Polyps and Its Effect on Nasal Ventilation and Olfactory Function
Min LUO ; Jinfang DUAN ; Gang SUN ; Yujie LI ; Hong CHEN
Progress in Modern Biomedicine 2017;17(23):4572-4575
Objective:To investigate the clinical effect of endoscopic sinus surgery in the treatment of sinusitis and nasal polyps and its effect on nasal ventilation and olfactory function.Methods:80 patients with sinusitis and nasal polyps were selected in our hospital from January 2014 to June 2016,who were randomly divided into observation group and control group,each group of 40 cases.The control group was treated with traditional enucleation,while the observation group was treated with endoscopic sinus surgery.The clinical efficacy,the symptom scores,nasal airway resistance and olfactory function score before treatment and 3 months after treatment were compared between the two groups.Results:The total effective rate of the observation group was 95.00%,which was significantly higher than that of the control group 77.50% (P<0.05).There was no significant difference in nasal congestion,purulent nasal discharge,olfactory dysfunction,pain and total symptom score between the two groups before treatment (P>0.05),nasal congestion,purulent nasal discharge,olfactory dysfunction,pain and total symptom score between the two groups at 3 months after treatment were lower than before treatment,and nasal pus,smell disorder,pain and total symptom scores of the patients in the observation group were lower than the control group (P<0.05).There was no significant difference in nasal airway resistance and olfactory function score between the two groups before treatment and 3 months after treatment (P>0.05),nasal airway resistance,olfactory function score of patients in two groups at 3 months after treatment were lower than before treatment,and the observation group was lower than that ofthe control group (P<0.05).Conclusion:Endoscopic sinus surgery for sinusitis and nasal polyps is helpful to improve the clinical symptoms,promote the olfactory function and recovery of nasal ventilation,which is an effective method for treatment of sinusitis and nasal polyps.
6.Research status of acinar cell cystadenoma of the pancreas
Wangjun ZHANG ; Pengyu DUAN ; Gang WANG ; Bei SUN
Chinese Journal of Digestive Surgery 2017;16(6):632-634
Acinar cell cystadenoma (ACA),also referred to as acinar cystic transformation,is a rare and newly recognized cystic lesion of the pancreas.This cystic lesion displaying apparent acinar cell differentiation and lacking of distinct cellular atypia was accepted as the benign counterpart of acinar cystadenocarcinoma.However,the exact etiopathogenesis of ACA is still not clear.
7.The Analysis of the Lung HRCT Manifestations in SLE
Shuixing ZHANG ; Xuelin ZHANG ; Bo YANG ; Gang DUAN
Journal of Practical Radiology 2001;0(10):-
Objective To analyze the characteristic findings of chest high-resolution CT (HRCT) in the patients with syetemic lupus erythematosus (SLE).Methods A retrospective analysis of HRCT manifestations was performed in 17 patients with clinically proven SLE.Results The HRCT finding included thickened interiobular septa(n=9), “irregular interface” sign(n=7), subpleural bands(n=7), increase lung attenuation(n=7), bronchiectasis(n=3), “honeycomb” sign(n=4), pulmonary emphysema(n=6), SLE pneumonia(n=4), nodular parenchymal opacities(n=4), patchy airspace consolidation(n=4), pleuritis(n=13), pericarditis(n=3) and mediastinal or axillary lymphadenopathy(n=8).Conclusion The correct identifying of the HRCT manifestations plays an important role in the early diagnosis and treament of pulmonary involvement due to SLE.
8.Design and development of auxiliary measurement device for knee anterior cruciate ligament injury
Dong GUO ; Haiyan DUAN ; Tao HUANG ; Gang XUE ; Weihua HE
Chinese Medical Equipment Journal 2017;38(2):28-31
Objective To design an auxiliary measurement device for anterior cruciate ligament injury in order to improve the accuracy of specialist examination and postoperative functional assessment.Methods The device consisted of a main frame and support pads,which was designed based on the principles of anatomopathology and mechanical mechanics.The frame was set above and paralleled to the tibia,and the measurement scale was put at the vertical direction of the frame.The support pads were fixed to the tibia and patella respectively to execute auxiliary measurement by providing opposite acting force.Results The success rate of preliminary diagnosis by the device was higher than that by traditional method.Conclusion The device gains advantages in convenience,practicality,low cost and etc,and is worthy promoting in the orthopedics department.
9.Effects of the Dachaihu decoction on intra-abdominal pressure in severe acute pancreatitis
Tao LI ; Jun DUAN ; Desheng CHEN ; Shupeng WANG ; Gang LI
International Journal of Traditional Chinese Medicine 2016;(2):110-113
Objective To observe the effects of the Dachaihu decoction on intra-abdominal pressure in severe acute pancreatitis. Methods 70 patients with SAP from China-Japan Friendship Hospital were randomly divided into two groups. 35 patients in a conventional treatment group were treated with conventional treatment of severe acute pancreatitis, and 35 patients in a Dachaihu decoction treatment group were treated with the decoction through nasogastric tube based on conventional treatment. The changes of intra-abdominal pressure and the morbidity of IAH and ACS in both groups were observed in acute stage. Results The intra-abdominal pressure in both groups increased. But the pressure in the Dachaihu decoction treatment group (13.31 ± 4.42 mmHg, 13.02 ± 5.23 mmHg, 12.35 ± 3.34 mmHg, 11.26 ± 4.46 mmHg, 9.89 ± 3.44 mmHg) was lower than the conventional treatment group (16.89 ± 5.71 mmHg, 17.52 ± 3.37 mmHg, 16.21 ± 2.15 mmHg, 14.57 ± 5.56 mmHg, 12.11 ± 1.28 mmHg) from the third day on (P<0.05). And the morbidity of intra-abdominal hypertension and abdominal compartment syndrome in the Dachaihu decoction treatment group were lower than the conventional treatment group in the whole acut stage (40%vs. 8.75%).The differences between two groups were statistically significant (P<0.05). Conclusion The Dachaihu decoction may significantly reduce the intra-abdominal pressure and the morbidity of intra-abdominal hypertension and abdominal compartment syndrome among patients with severe acute pancreatitis.
10.Preparation of Lanthanum*# Substituted PropertyHeptadecatungstodiphosphate- Polypyrrole Film Modified Electrode and Its Electr
Deliang DUAN ; Zhaizhong WANG ; Shiping ZHOU ; Gang WU
Chinese Journal of Analytical Chemistry 2001;29(6):679-681
The heptadecatungstodiphosphate substituted by L a(Ⅲ) with the formula α2-K7P2W17O61(La.OH2 ) (P2W 17La) was prepared by vacant refilling method. The anion of single substitu ted Dawson-type tungstophosphate salt was doped into the polypyrrole (PPY) film on a glassy carbon electrode (GC) by electrochemical method to prepare the chem ically modified electrode (P2W17La/PPY/GC). It maintains not only t he electrochemical activity and electrocatalytic property of P2W17L a, but also has good stability and sensitivity. In 0.50 mol/L HCl solution, th e first cathodic peak of P2W17La doping in polypyrrole film can cat alyze well the electroreduction of nitrite. The catalytic current was proporti onal to the concentration of nitrite between 6.0×10-5 and 1.0×10-2 mol/L.