4.Pattern and related factors of lateral cervical lymph node metastasis in patients with cN0 papillary thyroid carcinoma
Muyuan LIU ; Xihong YANG ; Haipeng GUO ; Hanwei PENG
Cancer Research and Clinic 2012;24(6):410-413
Objective To evaluate the pattern of lateral cervical metastases and to investigate the risk factors for lateral cervical lymph node metastases in paoiuary thyroid carcinoma patients with clinical negative lateral neck lymph node.Methods 73 patients with paoiuary thyroid carcinoma who underwent prophylactic lateral neck dissections(level Ⅱ-Ⅵ or level Ⅱ-ⅣandⅥ) were reviewed retrospectively on their medical records paoiuary thyroid carcinoma.None of patients in this study had a clinically positive lymph node.Neck dissection specimens were obtained for histological analysis for node metastasis with respect to the individual neck levels.Results Occult metastases in lateral neck were observed in 12(16.4 %)patients.9.6 %,0,13.6 %,9.6 %,0,4.8 % and 42.4 % patients had histologically positive lymph nodes in levels Ⅱa,Ⅱb,Ⅲ,Ⅳ,Va,Vband Ⅵ respectively.In multivariate analysis,lymphatic metastases in level Ⅵ was associated with lateral neck metastasis(OR=7.3,P=0.020)in cN0 patients with paoiuary thyroid carcinoma.Conclusion Levels Ⅲ,Ⅱa and Ⅳwere the most common stages showing occult lymph node metastases.Prophylactic lateral neck dissections may be omitted in the treatment of cN0 PTC patients ff level Ⅵ lymphatic metastases are not found on histological exam.
5.Intervention of arterial elasticity and endothelial function in patients with hyperlipidemia
Shunhua GUO ; Hengqing LI ; Xihong LIU ; Jianrui WEI
Chinese Journal of Primary Medicine and Pharmacy 2012;(8):1128-1130
ObjectiveTo research the endothelial dysfunction and early changes in arterial elasticity in patients with hyperlipidemia and effects of atorvastatin on these changes.Methods40 patients with hyperlipidemia but without any treatment in our hospital were selected as a study group,and 30 healthy people were selected as control group.Use the Flow mediated dilation,FMD detection which bases on the echo-trackingtechnology,eTRACYING to evaluate the right brachial atherosclerosis parameters and vascular diastolic parameters,including the pressure strain elastic modulus(Ep) ;stiffness index (β) ;compliance (AC) ;FMDs and FMDd.The study group take atorvastatin 20mg per day,then retested above parameters and TC,LDL-C after 12 weeks and analyzed all parameters.ResultsThe values of β and Ep in study group are significantly higher than the control group (all P < 0.001 ),but AC;FMDs and FMDd are significantly lower than the control group( all P < 0.001 ).The results of the study group after the treatment of atorvastatin are as follwing:TC,LDL-C,β and Ep are lower than before,AC,FMDs and FMDd are higher than before;and the differences are of significance in statistics ( all P < 0.001 ).ConclusionHyperlipidemic patients had shown the vascular endothelial injury and vascular early hardening before the abnormal changes in intimal,but the atorvastatin intervention could reverse these changes.
6.The feasibility of Ⅵ region lymph nodes metastasis status in prediction of lateral lymph nodes metastasis in papillary thyroid carcinoma with negative cervical lymph nodes
Muyuan LIU ; Haipeng GUO ; Hanwei PENG ; Xihong YANG
Chinese Journal of Postgraduates of Medicine 2014;37(2):1-3
Objective To evaluate if Ⅵ region lymph nodes metastasis status can be a reliable indicator in prediction of lateral lymph nodes metastasis in papillary thyroid carcinoma (PTC) with negative cervical lymph nodes (cN0).Methods Retrospectively reviewed the medical records from January 2003 to October 2011 of 73 patients with PTC who underwent prophylactic lateral neck dissection (Ⅱ-Ⅴ region or Ⅱ-Ⅳ region).The relationship between cervical lymph nodes metastasis and lateral lymph nodes metastasis was assessed.Results The rate of lateral lymph nodes metastasis was 16.4%(12/73).The rate of Ⅵ region lymph nodes metastasis was 42.5%(31/73).Multivariate analysis showed that Ⅵ region lymph nodes metastasis was the risk factor of lateral lymph nodes metastasis in cN0 patients with PTC(OR =7.3,P=0.020).Conclusion Ⅵ region lymph nodes metastasis status can be a reliable indicator of lateral lymph nodes metastasis in cN0 patients with PTC.
7.In vitro labeling and tracing of metanephric mesenchymal cells derived from embryonic rats
Yuqing JIAO ; Zhuwen YI ; Xiaojie HE ; Xihong LIU ; Qingnan HE ; Danlin HUANG ; Shuanghong MO ; Weian FU
Chinese Journal of Tissue Engineering Research 2009;13(45):8878-8883
BACKGROUND:Stem cell transplantation provides a new approach to treat chronic renal disease.Specific marking and in vivo tracing of stern cells are the basis of studies in this field.However,the marking methods appropriate for all cells remain uncertain.OBJECTIVE:To observe the in vivo location and differentiation of 4',6-diamidino-2-phenylindole (DAPI) and green fluorescence protein (GFP)-Iabeled cells in adriamycin nephrosis rats so as to explore an efficient labeling and tracing method for metanephric mesenchymal cells (MMCs) derived from embryonic rats.DESIGN,TIME AND SETTING:Grouping comparative observation was performed at the Second Xiangya Hospital of Central South University from April to December 2007.MATERIALS:A total of 60 female SD rats,weighing 180-220 g,of dean grade,were used to establish models of adriamycin nephrosis.METHODS:DAPI and MMCs infected with GFP and DAPI were respectively injected into addamycin nephrosis via the tail vein.DAPI and GFP distribution in the frozen sections was detected at 1,3,and 5 weeks,postoperatively.In addition,GFP expression in renal tissues was detected by ABC immunoenzymatic staining method.MAIN OUTCOME MEASURES:DAPI and GFP-labeled Cell grafts in adriamycin nephrosis rats were compared.The changes of GFP-transfected MMCs at different time points were observed.RESULTS:DAPI positive cells were observed in tubular structures after 1 weeks of injection of DAPI-labeled cells and DAPI alone,and remained existing at 5 weeks,but the florescence was reduced with time.GFP-transfected MMCs were able to survive and integrate into tubular structures after 1 week,and remained existing at 5 weeks.Moreover,the fluorescence was not reduced.ABC immunoanzymatic staining showed that only a few GFP-positive MMCs appeared in glomerular tufts,and mainly distributed in cytoplasm.Semi-quantitative evaluation of GFP show that the positive cell rate in rats with early application was greater than that with advanced application,and the positive rate was increased with time.CONCLUSION:Liposome mediated GFP gene transfer was an efficient labeling in vitro and suitable tracing method for cell differentiation experiment in vivo,suitable for short-term tracing and observation of transplanted cells.
8.Evaluation of different surgical procedures for bilateral multiple thyroid nodules
Haipeng GUO ; Xihong YANG ; Muyuan LIU ; Jianying LIN ; Weizheng CHEN ; Hanwei PENG
Journal of Endocrine Surgery 2011;05(4):260-263
ObjectiveTo compare the exposure, identification of parathyroid and postoperative complications between total thyroidectomy (TT) and subtotal/near total thyroidectomy (S/NT) for bilateral multiple thyroid nodules. MethodsA total of 278 cases were performed TT and S/NT randomly from Dec. 2006 to Dec.2009. The histology, identification of parathyroid and recurrent laryngeal nerves (RLN), and incidence of complications were compared between the 2 surgical procedures. The data were processed with t test or x2 test.Results227 cases were estimated to be benign preoperatively, among whom 28 cases ( 12.3% ) were diagnosed as focal cancer by postoperative pathology. The identification rate of parathyroid was 96.5% in TT group and 60.4% in S/NT group (P<0.05). The mean postoperative serum calcium level was 2.057 +0.016 mmol/L in TT group and 2. 15 + 0.019 mmol/L in S/NT group (P < 0.05 ). The incidence rate of transient hypoparathyroidism (HPT) was 16.9% in TT group and 5.7% in S/NT group (P<0.05). There was no statistical difference between the 2 groups in terms of the incidence rate of permanent HPT and transient recurrent laryngeal nerves (RLN) palsy ( P > 0.05 ). The incidence rate of permanent HPT was higher in reoperation cases ( 11.1% ) than in primary surgery cases (0.0%) in TT group ( P <0.05 ). ConclusionBased on the accurate technique under microscope field, TT is a safe surgical procedure for primary surgery with bilateral multiple thyroid nodules.
9.SUPPLY OF PULMONARY BLOOD IN YOUNG CHILDREN WITH TOF AND PULMONARY ATRESIA
Xihong HU ; Guoying HUANG ; Mier PA ; Guoping LI ; Dajiang ZHANG ; Lin WU ; Fang LIU
Acta Anatomica Sinica 1957;0(04):-
0.05).The differences were significant between the incidence of APCAs and the degree of pulmonary stenosis(P
10.Comparison of anterolateral thigh flap and forearm flap in repair of head and neck defects
Hanwei PENG ; Xihong YANG ; Haipeng GUO ; Jianying LIN ; Weizheng CHEN ; Min XU ; Muyuan LIU
Chinese Journal of Microsurgery 2009;32(1):32-35
Objective To report the clinical results and the advantages/disadvantages of anterolateral thigh flap (ALT) and forearm flap (FAF) in reconstruction of head and neck defect after cancer ablation. Methods 20 FAFs and 12 ALTs were performed to repair the head and neck tumor ablation defects. Of the 20 FAFs, 7 were used for repair of the through and through buccal defects, 4 for circumferential bypopharyngeal defects, 2 for plate defects, 1 for parotid area skin defect, 4 for floor of the mouth defects, and 2 for defect, of the base of the tongue, while of the 12 ALTs, 3 were used for repair of the defects of the base of the tongue, 4 for plate defects, and 5 for the floor of the mouth and/or lower gum defects. Survival of the flaps, function of the recipient site, and impact to the donor site were compared between these two groups to analyze the advantages/disadvantsges and key technique details of these two flaps. Results 19 FAFs totally survived. Vascular crisis occurred in 2 cases of FAF, of which 1 flap survived after conservative treatment, while the other 1 developed partial necrosis. All the 12 ALTs survived, without vascular crisis. 2 of the 14 planed ALTs were abandoned and replaced by FAFs, of which 1 because of absence of the perforating branch and the other 1 because of injury of the perforating branch. Secondary defects of the ALTs could be closed primarily, while secondary defects of the FAFs should be closed with skin grafts. Conlusion Both ALT and FAF can be performed with high survival rate. Each has its own advantages. Selection of the donor site deponds on situation of the defect and purpose of the reconstruction.