1.Preliminary exploration on the cultivation methods of postgraduates of anesthesiology
Yi ZENG ; Hailong DONG ; Lize XIONG
Chinese Journal of Medical Education Research 2012;11(8):813-815
This paper analyzed the cultivation of postgraduates of anesthesiology and the academic achievements in anesthesiology department from 2003 to 2010 in our hospital and explored the experiences in postgraduate cultivation.Cultivation of postgraduates of anesthesiology should focus on multidisciplinary integration,cross-discipline communication,extension of scientific thinking,enhancement of clinical skills so as to create the opportunity for clinical and research work.
2.Observation on serum interleukin′s alteration in patients with acute pancreatitis
Dong SHANG ; Fenglin GUAN ; Hailong CHEN
Chinese Journal of General Surgery 1997;0(04):-
Objective To study the clinical significance of the proinflammatory cytokines and anti-inflammatory cytokines in acute pancreatitis with systemic inflammatory response syndrome. MethodsIn this study, 13 cases of mild acute pancreatitis (MAP), and 19 cases of severe acute pancreatitis(SAP) were recruited to evaluate acute physiology and chronic health evaluation (APACHEⅡ) on post admission day 1,3,5,7 and Balthazar CT criteria on post admission day 1,7. Values of serum IL-6?IL-8?IL-10?IL-12 were measured. ResultsThe scores of APACHEⅡ and Balthazar CT criteria were lower in the MAP patients than those in the SAP patients(5.6?2.1 and 1.5?0.6 vs. 13.6?4.3 and 6.3?1.5, all P
3.Dose response effects of Shenfu injection on ischemic reperfusion injury of spinal cord in rabbit
Zhenghua ZHU ; Lize XIONG ; Hailong DONG
Chinese Journal of Anesthesiology 1997;0(11):-
Objective To investigate the dose response effects of Shenfu injection, an intravenous drug made from traditional Chinese herbs, on the ischemic spinal cord injury in rabbits Methods New Zealand white rabbits were anesthetized with halothane and spinal cord ischemia was induced with 20 min infrarenal aortic occlusion Animals were randomly allocated to 4 groups, in group A(n=6) without pharmacologic intervention, in group B (n=6) ,group C (n=6) and group D (n=6) Shenfu injection 5,10 and 20ml?kg -1 were infused intravenously at a constant rate within 30min before the aortic cross clamping, respectively Neurologic status was scored by the Tarlov system 1,4,8,12,24 and 48h following reperfusion The animals were sacrificed 48h following reperfusion to sample the spinal cord (L5 7) immediately for histopathologic study Results All animals survived during the experiment Compared with that in group A, the neurologic deficit score (NDS) increased significantly at each observing time in group B, group C and group D (P0 05), but there was no significant difference between group B, C and D NDS in group A,B,C and D 48h after reperfusion were 0 5?0 8,3 2?0 9(P
4.Isoflurane preconditioning induces neuroprotection against middle cerebral artery occlusion damage in rat
Lize XIONG ; Zhenghua ZHU ; Hailong DONG
Chinese Journal of Anesthesiology 1995;0(12):-
Objective To investigate if isoflurane preconditioning induces ischemic tolerance against neuronal damage produced by middle cerebral artery occlusion (MCAO) in rats Methods Thirty male SD rats weighing 350 400g were randomly divided into three groups: control group (no pretreatment,n=10),isoflurane preconditioning group (ISO group) (inhalation of 2% isoflurane and 98% O 2 1h per day lasting 5d,n=10), oxygen preconditioning group (O 2 group) (inhalation of 98% O 2 1h per day lasting 5d ,n=10) Right MCAO was induced by a 3 0 nylon thread with round tip inserted cranially into right internal carotid artery under isoflurane anesthesia and maintained for 120 min The neurologic deficit score (NDS) was evaluated 1, 3, 6, 12, 16 and 24h after reperfusion and the infarct volume was calculated at 24th following reperfusion Results The NDS of ISO group was lower than that of other two groups at each time interval (P0 05) Conclusions Isoflurane pretreatment can induce ischemic tolerance against neuronal damage produced by transient MCAO in rats
5.Thinking for improving the teaching quality of graduate degree in clinical medicine postgraduate
Binxiao SU ; Hailong DONG ; Jing WANG ; Ping LU
Chinese Journal of Medical Education Research 2015;14(6):545-548
Unclear cultivating aim and training plan as well as tutors' lacking of experience are the main problems of the postgraduate education for clinical medicine professional degree,which will cause the quality of clinical postgraduate training to fall greatly.Through the analysis,the author proposes increasing management authority of rotating disciplines for graduates,establishing tutor groups in rotating disciplines,making clear training plan,increasing the clinical simulation skill training courses,training and optimizing the professional master's tutors,which is to fit the needs of the postgraduate education for clinical medicine professional degree and to provide related references.
6.Avoiding injuries to aberrant right posterior hepatic duct during laparoscopic cholecystectomy
Hailong ZHAO ; Dong SHANG ; Qingkai ZHANG ; Shenglin ZHANG
Chinese Journal of Hepatobiliary Surgery 2014;20(5):359-362
Objective To investigate how to avoid and deal with injuries to the aberrant right posterior hepatic duct during laparoscopic cholecystectomy (LC).Method We studied 1 710 patients who underwent LC in our unit from January 2011 to November 2013.There were 5 patients with right posterior hepatic duct abnormally,and this paper analysed the cases.Results In the 5 patients,one patient had the right posterior hepatic duct draining into the gallbladder body (Ⅰ A type),two patients had the right posterior hepatic duct draining into the cystic duct (ⅢA type),and two patients had the cystic duct draining into the right posterior hepatic duct (ⅢB type).There was no damage to the right posterior hepatic duct during operation.One patient was converted from LC to open operation.The major aberrance was class Ⅲ.Conclusions Variant bile duct is an important cause of bile duct injuries during LC.The right posterior hepatic duct variation is the most common form.To raise our vigilance and fully understand the types of aberrant right posterior hepatic duct,reasonable use of preoperative MRCP and intraoperative cholangiography in selected patients are fundamental.Aberrant right posterior hepatic duct injuries can effectively be avoided.
7.Role of orexin in sleep disorder after isoflurane anesthesia in rats
Wei WU ; Mingzi RAN ; Jiannan LI ; Hailong DONG
Chinese Journal of Anesthesiology 2014;34(2):132-135
Objective To evaluate the role of orexin in the sleep disorder after isoflurane anesthesia in rats.Methods Sixty-four male Sprague-Dawley rats,aged 10-12 weeks,weighing 280-320 g,were randomly divided into 2 groups (n =32 each) using a random number table:control group (C) and isoflurane group (Ⅰ).Group Ⅰ inhaled 1.2% isoflurane from 8:00 to 13:30 to induce anesthesia,followed by 0.5 h of recovery.Group C received no anesthesia and the other procedures were similar to those previously described in group Ⅰ.The induction time and awakening time were recorded.Eight rats were randomly chosen to record the movement condition (locomotor time and activity) from 14:00 to 8:00 the next morning.Before beginning of anesthesia,at 4 h after beginning of anesthesia,and at 4 and 10 h after the end of anesthesia,6 rats were randomly chosen in each group to count the orexin/c-fos double-labeled neurons in hypothalamus.The ratio of activated orexin neurons (orexin/c-fos double-labeled neurons to orexin positive neurons) was calculated and plasma orexin-A concentration was detected.Results The induction time was (2.14 ± 0.17) min,awakening time was (8.7 ± 0.5) min,and EEG showed that there was no typical burst and suppression patterns in group Ⅰ.There was no significant difference in the number of orexin positive neurons between the two groups (P > 0.05).Compared with group C,the time for locomotor activity was significantly prolonged,and the activity was increased during the night (P < 0.01),the number of activated neurons,ratio of activated orexin neurons and plasma orexin-A concentration were decreased at 4 h after beginning of anesthesia in group Ⅰ (P < 0.01).The plasma orexin-A concentration was lower at 4 h after beginning of anesthesia,while higher at 10 h after the end of anesthesia than before beginning of anesthesia in group Ⅰ (P < 0.05).The number of activated neurons was significantly larger and ratio of activated orexin neurons was higher before beginning of anesthesia and at 10 h after the end of anesthesia and the plasma orexin-A concentration was higher at 4 and 10 h after the end of anesthesia than at 4 h after beginning of anesthesia in group Ⅰ (P < 0.05 or 0.01).Conclusion The development of sleep disorder after isoflurane anesthesia during the day time in rats is related to the regulatory role of orexin in it.
8.The effect of Cyclosporin A on sevoflurane postconditioning in focal cerebral ischemia
Ming XIA ; Weiyan LI ; Hailong DONG ; Lize XIONG
Journal of Medical Postgraduates 2003;0(05):-
Objective:Ischemic cerebral injury is a common complication during perioperative period.We found that ischemic postconditioning and various non-ischemic postconditioning(e.g.inhalation anesthetics) could significantly attenuate ischemic cerebral injury.The present study was to investigate the effect of Cyclosporin A on sevoflurane postconditioning in focal cerebral ischemia.Methods:Fifty male SD rats were randomly assigned to five groups (n=10 each): control group(con),1.0MAC group(sevo),1.0MAC+ Cyclosporin A group(sevo+CsA),1.0MAC+ vehicle group(sevo+vehicle)and Cyclosporin A group(CsA).All animals were subjected to right middle cerebral artery occlusion(MCAO) for 120min followed by reperfusion for 72h.The animals in sevo groups were given 1.0MAC sevoflurane inhalation from 20min before to 10min after reperfusion.The animals in CsA groups were given CsA by ICV injection before sevoflurane postconditioning.The neurological deficit scores(NDS) were recorded at 24h,48h,and 72h after reperfusion.Infarct volume percentage was determined after the last NDS assessment.Results:The infarct volume percentage ratio of Sevo, Sevo+CsA,CsA and Sevo+vehicle groups were 0.31?0.04,0.25?0.04,0.30?0.03 and 0.33?0.05,respectively(P
9.Effect of microinjection of orexin-A and orexin-B into cerebral ventricle on the release of histamine in hypothalamus
Long LI ; Zhihua WANG ; Lina ZHANG ; Hailong DONG
The Journal of Clinical Anesthesiology 2017;33(9):890-893
Objective To provide new evidences for understanding the mechanisms of promo-tive role of orexins in anesthetic emergence and the effect of microinjection of orexin-A/orexin-B into cerebral ventricle on the release of histamine.Methods Male SD rats were randomly divided into sa-line (control ), orexin-A and orexin-B groups. The microdialysis probe was inserted into hypothalamus under stereotaxic apparatus.The perfused fluid from the area of hypothalamic tube-romammillary nucleus was collected using in vivo microdialysis at 1 h,2 h and 3 h after 1 nmol or 5 nmol orexin-A or orexin-B microinjection into the cerebral ventricle (n =5 each).The concentrations of histamine at each time point in dialysates of perfused fluid were detected by high performance liquid chromatography (HPLC)to analyze its dynamic changes.After one week,each group was microin-jected with 10 nmol,15 nmol and 20 nmol orexin-A and orexin-B (n =5)into the cerebral ventricle respectively,dialysates was collect and histamine was detected at 1 h to analyze its dosage response. After one week,each group was microinjected 0.3 μl saline orexin-A and orexin-B (n =6)into the tu-beromammillary nucleus.Results Compared with the control group,microinjection of 1 nmol orexin-A significantly increased histamine release at 1 h,but the same dose of orexin-B had no such effect,5 nmol of orexin-A or orexin-B injections significantly facilitated histamine release at 2 h and 3 h (P <0.01).Microinjection of 10 nmol,15 nmol and 20 nmol orexin-A and orexin-B into ventricle caused an significant increase of histamine release at 1 h while the effect was the strongest in 20 nmol (P <0.05).Compared with the control group,microinjection of orexin-A significantly decreased time of the righting reflex (P <0.01),but the same dose of orexin-B had no such effect.Conclusion Micro-injection of both orexin-A or orexin-B into cerebral ventricle could promote the release of histamine, while the effect of orexin-A was stronger.Microinjection orexin-A into tuberomammillary nucleus sig-nificant facilitated recovery from isoflurane.
10.The effect of Atractyloside on sevoflurane postconditioning in focal cerebral ischemia
Ming XIA ; Weiyan LI ; Hailong DONG ; Lize XIONG
Journal of Medical Postgraduates 2003;0(10):-
Objective: To investigate the effect of Atractyloside on sevoflurane postconditioning in focal cerebral ischemia.Methods: Fifty male SD rats were randomly assigned to five groups(n=10 each): control group(con),1.0 MAC group(sevo),1.0 MAC+ Atractyloside group(sevo+Atr),1.0 MAC+ vehicle group(sevo+vehicle)and Atractyloside group(Atr).All animals were subjected to the right middle cerebral artery occlusion(MCAO) for 120 min followed by reperfusion for 72 h.The animals in sevo groups were given 1.0 MAC sevoflurane inhalation from 20 min before to 10 min after reperfusion.The animals in Atr groups were given Atractyloside by ICV injection before sevoflurane postcondioning.The neurological deficit scores(NDS) were recorded at 24 h,48 h,and 72 h after reperfusion.Infarct volume percentage was determined after the last NDS assessment.Results: The infarct volume percentage ratio of sevo group(0.32?0.05) was significantly lower than that of con group(0.55?0.07)(P0.05).The infarct volume percentage ratio of sevo+Atr group and Atr group were significantly higher than that of Sevo group(P0.05).NDS of 24 h,48 h and 72 h after reperfusion in sevo group and sevo+vehicle were significantly higher than that in Con group.NDS of 24 h,48 h and 72 h after reperfusion in sevo+Atr group and Atr were significantly lower than that in Sevo group.Conclusion: Atractyloside abolished the protective effects of sevoflurane postconditioning on focal cerebral ischemia-reperfusion injury.