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Wang L.,Guangdong Academy of Medical science | He F.,Linyi City Peoples Hospital | Zhong Z.,Sun Yat Sen University | Lv R.,Sun Yat Sen University | And 2 more authors.
BioMed Research International | Year: 2015

Neurotrophic tyrosine kinase type 1 (NTRK1) plays critical roles in proliferation, differentiation, and survival of cholinergic neurons; however, it remains unknown whether enhanced expression of NTRK1 in neural stem cells (NSCs) can promote their differentiation into mature neurons. In this study, a plasmid encoding the rat NTRK1 gene was constructed and transfected into C17.2 mouse neural stem cells (NSCs). NTRK1 overexpression in C17.2 cells was confirmed by western blot. The NSCs overexpressing NTRK1 and the C17.2 NSCs transfected by an empty plasmid vector were treated with or without 100 ng/mL nerve growth factor (NGF) for 7 days. Expression of the cholinergic cell marker, choline acetyltransferase (ChAT), was detected by florescent immunocytochemistry (ICC). In the presence of NGF induction, the NSCs overexpressing NTRK1 differentiated into ChAT-immunopositive cells at 3-fold higher than the NSCs transfected by the plasmid vector (26% versus 9%, P < 0.05). The data suggest that elevated NTRK1 expression increases differentiation of NSCs into cholinergic neurons under stimulation of NGF. The approach also represents an efficient strategy for generation of cholinergic neurons. © 2015 Limin Wang et al.

Huang X.-F.,Dalian Medical University | Wang K.-Y.,Linyi City Peoples Hospital | Liang Z.-H.,Dalian Medical University | Du R.-R.,First Affiliated Hospital of Baotou Medical College | Zhou L.-N.,Dalian Medical University
European Neurology | Year: 2015

Purpose: This study explored the clinical characteristics, diagnosis and treatments of primary blepharospasm. Methods: In this retrospective analysis, 100 patients with blepharospasm were enrolled. Data were collected from medical records and face-to-face interviews with patients and their families. Results: The age of onset was 56.4 ± 2.7 (range, 32-76 years). The duration between onset and accurate diagnosis was 38.7 ± 36.0 months (range, 2-120 months). Dry eyes occurred in 54% of the patients. The initial diagnostic accuracy was 10%. Dry eye syndrome, conjunctivitis/keratitis and myasthenia gravis caused the most confusion in the differential diagnosis. Regular botulinum toxin type A injections improved both eyelid spasms and subjective ocular symptoms in all patients. Conclusions: Regular botulinum toxin type A injections improved both eyelid spasms and subjective ocular symptoms in blepharospasm patients. The differentiation of primary blepharospasm differentiation from dry eye syndrome, conjunctivitis/keratitis and myasthenia gravis must be improved. © 2015 S. Karger AG, Basel.

Li X.-M.,Shandong University | Shao M.-T.,Linyi City Peoples Hospital | Wang J.-J.,Shandong Lunan Ophthalmologic Hospital | Wang Y.-L.,Shandong University
Journal of Zhejiang University: Science B | Year: 2014

Objective: To investigate the relationship between post-operative cognitive dysfunction (POCD) and regional cerebral oxygen saturation (rSO2) and β-amyloid protein (Aβ) in patients undergoing laparoscopic pancreaticoduodenectomy.Methods: Fifty patients undergoing elective laparoscopic pancreaticoduodenectomy received five groups of neuropsychological tests 1 d pre-operatively and 7 d post-operatively, with continuous monitoring of rSO2 intra-operatively. Before anesthesia induction (t0), at the beginning of laparoscopy (t1), and at the time of pneumoperitoneum 120 min (t2), pneumoperitoneum 240 min (t3), pneumoperitoneum 480 min (t4), the end of pneumoperitoneum (t5), and 24 h after surgery, jugular venous blood was drawn respectively for the measurement of Aβ by enzyme-linked immunosorbent assay (ELISA).Results: Twenty-one cases of the fifty patients suffered from POCD after operation. We found that the maximum percentage drop in rSO2 (rSO2, %max) was significantly higher in the POCD group than in the non-POCD group. The rSO2, %max value of over 10.2% might be a potential predictor of neurocognitive injury for those patients. In the POCD group, the plasma Aβ levels after 24 h were significantly higher than those of pre-operative values (P<0.01). After 24 h, levels of plasma Aβ in the POCD group were significantly higher than those in the non-POCD group (P<0.01).Conclusions: The development of POCD in patients undergoing laparoscopic pancreaticoduodenectomy is associated with alterations of rSO2 and Aβ. Monitoring of rSO2 might be useful in the prediction of POCD, and Aβ might be used as a sensitive biochemical marker to predict the occurrence of POCD. © 2014, Zhejiang University and Springer-Verlag Berlin Heidelberg.

Li X.-M.,Linyi City Peoples Hospital | Li F.,Linyi City Peoples Hospital | Liu Z.-K.,Linyi City Peoples Hospital | Shao M.-T.,Linyi City Peoples Hospital
Journal of Zhejiang University: Science B | Year: 2015

Objective: To explore the relationship of postoperative cognitive dysfunction (POCD) in one-lung ventilation (OLV) patients and regional cerebral oxygen saturation (rSO2). Methods: Twenty-nine male and twenty-one female cases of OLV received thoracic surgery, with American Standards Association (ASA) physical status being at Grades I–III. Neuropsychological tests were performed on the day before operation and 7 d after operation, and there was an intraoperative continuous monitoring of rSO2. The values of rSO2 before anesthesia induction (t1), at the beginning of OLV (t2), and at the time of OLV 30 min (t3), OLV 60 min (t4), the end of OLV (t5), and the end of surgery (t6) were recorded. The intraoperative average of rSO2 ($$\overline {rS{O_2}} $$), the intraoperative minimum value of rSO2 (rSO2, min), and the reduced maximum percentage of rSO2 (rSO2, %max) when compared with the baseline value were calculated. The volume of blood loss, urine output, and the amount of fluid infusion was recorded. Results: A total of 14 patients (28%) in the 50 cases suffered from POCD. The values of mini-mental state examination (MMSE), the digit span and the digit symbol on the 7th day after the operation for POCD in OLV patients were found to be significantly lower than those before the operation (P<0.05). The values of MMSE and vocabulary fluency scores were significantly lower than those in the non-POCD group (P<0.05). The values of rSO2 in the POCD group of OLV patients at t2 and t3 and the values of rSO2 in the non-POCD group at t2 were found to be significantly higher than those at t1 (P<0.05). The values of rSO2, %max in the POCD group were significantly higher than those in the non-POCD group (P<0.05). When the value of rSO2, %max is more than 10.1%, it may act as an early warning index for cognitive function changes. Conclusions: POCD after OLV may be associated with a decline in rSO2. © 2015, Zhejiang University and Springer-Verlag Berlin Heidelberg.

Zhang X.,Linyi City Peoples Hospital | Zhang Y.,Linyi City Peoples Hospital | Nie Y.,Linyi City Peoples Hospital | Wang S.,Linyi City Peoples Hospital | And 2 more authors.
Tumor Biology | Year: 2014

The diagnosis of nasopharyngeal cancer (NPC) remains a clinical challenge. Many studies have assessed the diagnostic potential of Zta antibody of the Epstein-Barr virus (EBV) in NPC patients but with controversial results. This study aims to summarize the overall diagnostic performance of EBV Zta antibody in NPC. Based on a comprehensive search of the Pubmed and Embase, Web of Science, Chinese National Knowledge Infrastructure (CNKI), Wanfang Databases and China Citation Databases, we identified outcome data from all articles estimating diagnostic accuracy of EBV Zta antibody for NPC. A summary estimation for sensitivity, specificity, and other diagnostic indexes were pooled using a bivariate model. The overall measure of accuracy was calculated using summary receiver operating characteristic curve and the area under curve (AUC) was calculated. According to our inclusion criteria, 17 studies with 11,822 subjects (1,645 NPC cases, 10,177 controls) were included. The summary estimates were: sensitivity 0.87 (95 % confidence interval [CI]=0.86-0.89), specificity 0.94 (95 % CI=0.93-0.94), positive likelihood ratio 8.05 (95 % CI=5.59-11.59), negative likelihood ratio 0.16 (95 % CI=0.12-0.21), diagnostic odds ratio 52.93 (95 % CI=29.95-93.56), the AUC and Q* index were 0.9352 and 0.8714, respectively. In conclusion, serum EBV Zta had a better diagnostic performance for NPC. Further studies should be performed to confirm our findings. © 2014 International Society of Oncology and BioMarkers (ISOBM).

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