1.Neuropsychiatric complications after liver transplantation: Retrospective analysis of three cases and literature review
Chunyou LI ; Sen LI ; Yunqiang FU
Chinese Journal of Tissue Engineering Research 2007;11(38):7689-7692
It was reported that three cases of neuropsychiatric complications after liver transplantation were enrolled from Department of Hepatobiliary Surgery, Weifang People's Hospital from March 2001 to August 2004. Two cases of delirium kind of mental disorder, and one patient had epilepsy and limb movement disorder. All subjects were mainly given immunosuppressant drug therapy, a timely correction of fluid and electrolyte imbalance and symptomatic treatment. Postoperative prognosis of patients as well as the diagnosis and treatment of patients were retrospectively observed. Case one, male aged 54 years of hepatitis B liver cirrhosis and large, with a history of hypertension for 15 years and diabetes for 10 years. On September 25th, 2001 the patient received piggyback liver transplantation. During and after transplantation the patient received a strong impact on the treatment with the Dragon 1 000 mg. After 28 days,the patient died of hyperbilirubinemia, hyperkalemia, liver and kidney failure clinically. Case two, male aged 47 years of hepatitis B, cirrhosis and huge hepatocellular carcinoma, chronic calculous cholecystitis, with a history of hypertension for 5 years and diabetes for 2 years. On December 26th, 2001 the patient was treated with piggyback liver transplantation. At day 44 the patient had obvious cough with yellow-green phlegm, sputum culture was Aspergillus spp (50%) and diflucan for the treatment. Till day 53, drowsiness and depressed spirit appeared; at day 54, the patient was disoriented, and at day 55 hemiparesis occurred at right side, gradually coma, by brain CT scan it confirmed to be intracerebral hemorrhage, and died. Case three, male aged 59 years of hepatitis B, cirrhosis of liver atrophy with right hepatic small hepatocellular carcinoma. On August 20th, 2004 the patient was given classic modified line-situ liver transplant surgery without venovenous bypass. Four days after sudden aphasia, gradually motor dysfunction, swallowing dysfunction,restlessness and epilepsy appeared. After Phenytoin Sodium, chloral hydrate enema and luminal sodium treatment, focal epilepsy and irritable symptoms were effectively controlled, but aphasia and left hemiparesis still occurred. After five months, the patient died of cerebral hemorrhage. Incidence rate of neuropsychiatric complications are high after liver transplantation. Besides, brain hemorrhage is a serious complication and has a high mortality rate. It is important and positive of reducing bleeding, maintaining hemodynamics and environmental stability to avoid the large blood transfusion and infusion for the prevention of serious complications.
2.Clinical and EEG Characteristics of Benign Epilepsy of Childhood with Centro-temporal Spikes
Zhaohui ZHUANG ; Zhiming HUANG ; Yunqiang CHEN
Journal of Chinese Physician 2001;0(10):-
Objective To summarize the clinical and EEG characteristics of benign epilepsy of childhood with centro-temporal spikes(BECCT). Methods The clinical and EEG data of 78 children with BECCT were retrospectively analyzed. Results The onset age of this disease was 3 to 14 years, and 62 patients aged 5 to 10 years(62/78,80%). The seizures of 72 cases(72/78,92.3%)were associated with sleep. 63 cases(73/78,80.8%)were partial seizures, and 15 cases(15/78,19.2%) were generalized seizures. EEG demonstrated that there were sharp or spike waves of interior discharge in the centro-temporal area of one or two sides, 55.4% cases were positive in awake EEG, and 92% cases were positive in sleep EEG. 93.2% cases were responsive to antiepileptic drugs. Conclusion The characteristics of BECCT were as follows: partial epilepsy related to sleep, partial seizure types and sharp or spike waves of EEG in centro-temporal area. EEG sleep induction test could increase positive diagnostic rate of this disease, and the prognosis of this disease was fine. The early diagnosis is helpful for the patients' prognosis, and can alleviate psychological suffering of the patients and their families.
4.Neuropsychiatric complications after liver transplantation:Retrospective analysis of three cases and literature review
Chunyou LI ; Sen LI ; Yunqiang FU
Chinese Journal of Tissue Engineering Research 2007;0(38):-
It was reported that three cases of neuropsychiatric complications after liver transplantation were enrolled from Department of Hepatobiliary Surgery,Weifang People's Hospital from March 2001 to August 2004. Two cases of delirium kind of mental disorder,and one patient had epilepsy and limb movement disorder. All subjects were mainly given immunosuppressant drug therapy,a timely correction of fluid and electrolyte imbalance and symptomatic treatment. Postoperative prognosis of patients as well as the diagnosis and treatment of patients were retrospectively observed. Case one,male aged 54 years of hepatitis B liver cirrhosis and large,with a history of hypertension for 15 years and diabetes for 10 years. On September 25th,2001 the patient received piggyback liver transplantation. During and after transplantation the patient received a strong impact on the treatment with the Dragon 1 000 mg. After 28 days,the patient died of hyperbilirubinemia,hyperkalemia,liver and kidney failure clinically. Case two,male aged 47 years of hepatitis B,cirrhosis and huge hepatocellular carcinoma,chronic calculous cholecystitis,with a history of hypertension for 5 years and diabetes for 2 years. On December 26th,2001 the patient was treated with piggyback liver transplantation. At day 44 the patient had obvious cough with yellow-green phlegm,sputum culture was Aspergillus spp (50%) and diflucan for the treatment. Till day 53,drowsiness and depressed spirit appeared; at day 54,the patient was disoriented,and at day 55 hemiparesis occurred at right side,gradually coma,by brain CT scan it confirmed to be intracerebral hemorrhage,and died. Case three,male aged 59 years of hepatitis B,cirrhosis of liver atrophy with right hepatic small hepatocellular carcinoma. On August 20th,2004 the patient was given classic modified line-situ liver transplant surgery without venovenous bypass. Four days after sudden aphasia,gradually motor dysfunction,swallowing dysfunction,restlessness and epilepsy appeared. After Phenytoin Sodium,chloral hydrate enema and luminal sodium treatment,focal epilepsy and irritable symptoms were effectively controlled,but aphasia and left hemiparesis still occurred. After five months,the patient died of cerebral hemorrhage. Incidence rate of neuropsychiatric complications are high after liver transplantation. Besides,brain hemorrhage is a serious complication and has a high mortality rate. It is important and positive of reducing bleeding,maintaining hemodynamics and environmental stability to avoid the large blood transfusion and infusion for the prevention of serious complications.
5.Axonal regeneration promotion by chondroitinase ABC after spinal cord injury in rats
Yunqiang XU ; Shiqing FENG ; Pei WANG
Orthopedic Journal of China 2006;0(07):-
[Objective]To investigate the effect of chondroitinase ABC(ChABC) after spinal cord injury(SCI) in adult rats,and to evaluate the significance of treatment. [Methods]Forty adult Wistar rats were divided into two groups: the control group(group A),the chondroitinase ABC group(group B).The thoracic T10 spinal cord injury model was made by impactor model II manual.After SCI,group B animals received ChABC treatment,while group A animals only received blank saline.The locomotor functions(BBB score) and the neuroelectrophysiological changes(SEP&MEP) of the rats were evaluated.Twelve weeks after SCI,biotinylated dextran amine(BDA) was injected into the cerebral cortex to trace the corticospinal tracts(CST).Then two weeks after the tracing,the animals were killed and the spinal cord frozen sections were made.The tissue sections were processed with Cy3 fluorescence stain,HE stain and anti NF-200 immuohistological stain.The section images were analyzed by Image Pro Plus image analyzing software.All the statistics were performed by SPSS 13.0 software.[Results]At 4 weeks after SCI,group B had obvious higher BBB scores than control group(P
6.Heart function changes following transplantation of autologous bone marrow mononuclear cells in a canine model of heart failure induced by rapid ventricular pacing: Pathological image analysis of collagen fiber
Hairong LI ; Aiguo XU ; Yunqiang ZHANG ; Xiangqian QI
Chinese Journal of Tissue Engineering Research 2010;14(1):116-120
BACKGROUND: Stem cell regeneration can repair injured myocardium. However, bone marrow mononuclear cells (BM-MNCs) transplantation for non-ischemic heart failure remains poorly understood.OBJECTIVE: To investigate effect of transplantation of autologous BM-MNCs on cardiac function in canine model of heart failure by rapid ventricular pacing. METHODS: Implantation and model control groups were subjected to model establishment of heart failure by rapid pacing of apex of right ventricle, and respectively injected with CM-DiI-labeled BM-MNCs and normal saline into myocardium. After 4 weeks, all dogs were sacrificed, and specimens of myocardium were collected from the apex, anterior wall and interventricular septum. All specimens were labeled by FITC. Myocardial fibrosis conditions of implanted cells were observed, collagen volume fraction was determined, and hemodynamic indexes were measured. RESULTS AND CONCLUSION: BM-MNCs labeled by CM-DiI and FITC were observed in the transplantation group showing yellow fluorescence, while in the control group FITC-labeled green fluorescence was seen. HE and Masson staining showed that inflammatory cell infiltration in interstitial matrix, displaying interstitial fibrosis and myocardial fibrosis in model control group, but no obvious inflammatory cell infiltration or myocardial fibrosis was observed in the transplantation group, indicating a success model establishment of heart failure by rapid ventricular pacing. Compared with model control group, the collagen volume fraction decreased significantly (P < 0.05), ejection fracture remarkably increased (P < 0.05), but left ventricular end-diastolic and end-systolic diameter remained unchanged in the transplantation group (P > 0.05). Autologous BM-MNCs in canine model of heart failure show myocardium-like cells differentiation, and improve heart function, which possibly associate with the ability of inhibiting the myocardial fibrosis.
7.Rehabilitating the non-motor symptoms of Parkinson's disease using repetitive transcranial magnetic stimulation
Min SU ; Liying HAN ; Chuandao LIU ; Yunqiang ZAN ; Weixin YANG
Chinese Journal of Physical Medicine and Rehabilitation 2012;(12):911-915
Objective To research the clinical rehabilitative effect of repeated transcranial magnetic stimulation (rTMS) for the non-motor symptoms of Parkinson's disease.Methods Fifty-five PD patients were randomly divided into an rTMS treatment group (n =29) and a sham stimulation group (n =26).The treatment group received a course of 0.5 Hz rTMS treatment,while the sham stimulation group had the same treatment but with no energy output.Both groups were evaluated using a non-motor symptoms questionnaire (NMSQuest),the Hamilton depression scale (HAMD),the Pediatric Daytime Sleepiness Scale (PDSS),the mini-mental state examination (MMSE) and the scale for outcomes in PD for autonomic symptoms (SCOPA-AUT) before treatment,immediately after,and a month after treatment.Results Compared with before treatment,the average NMSQuest score of the treatment group declined significantly,though 1 month after treatment the improvement was no longer significant.After treatment and 1 month later the average NMSQuest score of the sham stimulation group increased gradually.The effect in the treatment group was therefore significantly better than in the sham stimulation group.After treatment and 1 month later the average HAMD score of the treatment group was significantly lower than before treatment while the average HAMD score of the sham stimulation group had increased gradually.The improvement in depression in the treatment group was therefore significantly better than in the sham stimulation group.After treatment,sleep disorders in the treatment group had been significantly alleviated,but one month later the improvement was no longer significant compared with before treatment.PDSS scores in the sham stimulation group declined gradually,but the improvement in sleep disorders among the treatment group was significantly better than among the sham stimulation group.Cognition improved significantly among the treatment group right after treatment,but 1 month later it had worsened while the MMSE scores of the sham stimulation group decreased gradually.The difference between the two groups was statistically significant.The average SCOPA-AUT scores of the two groups were not significantly different from each other or from the scores before treatment.Conclusion Repeated TMS can improve most non-motor symptoms of PD.The improvement in depression is the most significant.A short course of rTMS has no obvious rehabilitative effect on the autonomic function disorders of PD patients.
8.Transcranial magnetic stimulation for monitoring the rehabilitation of upper-extremity function after stroke
Min SU ; Liying HAN ; Weixin YANG ; Hongbing ZHANG ; Yunqiang ZAN
Chinese Journal of Physical Medicine and Rehabilitation 2016;38(3):175-179
Objective To evaluate the effect of the transcranial magnetic stimulation on upper-extremity function rehabilitation and changes in the excitability of cerebral cortex,and to evaluate from the viewpoint of electro-physiology the prognosis so as to guide the rehabilitation treatment of patients after stroke.Methods Forty-six patients in the early stage after a stroke were given TMS examinations of the ipsilateral brain region.Those with the motor evoked potentials (MEPs) amplitudes lower than 50 μV were classified into a motion-induced experimental negative group (the negative group),whiie those whose MEP amplitude reached 50 μV or more were classified as movement-induced positive (the positive group).Both groups were given the same treatment.Before and after 2,4 and 8 weeks of treatment the Fugl-Meyer movement function rating scale was used to assess their bilateral upper limb movement function.TMS technology was used to detect any change in the resting motor threshold (RMT) and the amplitude (Amp) of MEPs in the motor cortex.The incubation period of the cortex (CL) and the central motor conduction time (CMCT) in the contralateral motor cerebral cortex were also observed.Results After 4 weeks of treatment,the average score of the positive group on Fugl-Meyer upper movement function rating scale reached (54.99±2.76),significantly higher than before treatment and significantly higher than the negative group's average (P<0.05).After 8 weeks of treatment,the average score in the positive group had increased further to 73.11±2.98,still significantly higher than that of the negative group (P<0.01).After treatment,RMT decreased progressively in both groups,but that of the negative group dropped from (98.35±10.12) to (30.35±7.31) (9<0.01),with significantly greater decline in amplitude and rate than that of the positive group (P<0.05).After treatment,the Amp of both groups showed a gradual increasing trend.Amp increased earlier in the positive group,but there was no significant difference in the extent of the increase between the two groups (P>0.05).After the treatment the CL and CMCT had shortened significantly in the negative group compared to before the treatment (P<0.05),while there was no significant change in CL and CMCT after the treatment (P>0.05).Conclusions The excitability of the contralateral motor cortex changes after a stroke.TMS can be used to characterize the MEP to monitor and predict recovery.This should help clinicians prepare more scientific rehabilitation plans.
9.Collagen/silk fibroin nerve conduits used for repairing peripheral nerve defect:application and development
Yunqiang XU ; Yingjie LIU ; Ruixin LI ; Shuanglong ZHU ; Zhenhui ZHANG
Chinese Journal of Tissue Engineering Research 2016;20(38):5745-5751
BACKGROUND:Peripheral nerve defect due to limb dysfunction has always been the difficulty faced by the medical profession. Ideal materials and processing technology for constructing a tissue engineering scaffold targeting peripheral nerve repair are stil in research stage. OBJECTIVE:To review the research progress in peripheral nerve repair using col agen/silk fibroin nerve conduits. METHODS:In this paper, the first author retrieved the PubMed and CNKI from 2003 to 2016 to search articles regarding methods of constructing artificial nerve scaffolds and selection of raw materials. Data from these articles were col ected, summarized and analyzed. RESULTS AND CONCLUSION:Forty-six articles were included for final analysis. Col agen and its degradation products trigger no inflammatory response in the host because of high biocompatibility and biodegradability. However, its use is largely limited by its rapid degradation and poor physical performance. Silk fibroin has a high flexibility and biocompatibility, and exhibits a slow degradation in vivo. As a rapid prototyping technique, three-dimensional printing can print various forms of scaffolds within a short time, characterized as high-quality pore structure and large-scale production. Given these, the col agen/silk fibroin nerve conduit prepared using the three-dimensional printing technology can maintain the biocompatibility and even improve the mechanical properties of the raw materials. Until now, more investigations on nerve repair using col agen or silk fibroin have been done, and we have never stopped improving the production process of these scaffolds. Therefore, the col agen/silk fibroin scaffold prepared using the three-dimensional printing technology is expected to become the main candidate for the repair of peripheral nerve defects.
10.Hypothermia regulates the internal environment following spinal cord injury: the underlying mechanisms
Shuanglong ZHU ; Xuyi CHEN ; Yunqiang XU ; Sai ZHANG
Chinese Journal of Tissue Engineering Research 2017;21(20):3263-3268
BACKGROUND: Spinal cord injury is a damage to the spinal cord with a high morbidity that can be divided into primary and secondary injury. Secondary injury does more harm to the body than primary injury, which can be regulated and improved through proper interventions. In addition to the drugs, surgical decompression and other traditional treatments, hypothermia is an important physical intervention that has been shown to regulate secondary injury following spinal cord injury, and hold neuroprotective effect.OBJECTIVE: To introduce different hypothermia treatments for spinal cord injury and the effect on the disordered environment after spinal cord injury, as well as summarize the latest progression. METHODS: A computer-based search of CNKI and PubMed databases was conducted for the articles addressing the application of hypothermia in spinal cord injury published from January 2001 to June 2016, using the keywords of therapeutic hypothermia or low temperature, spinal cord injury in Chinese and English, respectively. RESULTS AND CONCLUSION: Hypothermia is divided into systematic and local hypothermia, and the former is simple and convenient, but it may lead to complications. Local hypothermia can quickly reach the target temperature, to make deep hypothermia at injury site and stablize the core temperature in the body, but it is invasive, and the necessary time of locating and maintaining effective temperature is a challenge. In general, hypothermia can improve the disordered microenvironment after spinal cord injury, reduce inflammatory infiltration, regulate the expression of relative genes and proteins, and promote the proliferation and differentiation of endogenous nerve cells. There are basic and clinical studies on hypothermia neuroprotection against spinal cord injury from various aspects; thereafter, hypothermia is a promising treatment strategy for spinal cord injury.