Coix ; Epimedium ; Fatigue ; Humans ; Hypoxia ; Plant Leaves

OBJECTIVETo analyze the reason and strategy for failure of posterior pedicle screw short-segment internal fixation on thoracolumbar fractures.

METHODSFrom March 2008 to December 2010,the clinical data of 18 patients with thoracolumbar fracture failed in posterior pedicle screw short-segment internal fixation were retrospectively analyzed. There were 11 males and 7 females with an average age of 37.2 years (ranged, 19 to 63). The time from the first operation to complication occurrence was from 6 to 44 months with an average of 14.3 months. Of them,fusion failure was in 7 cases (combined with screw breakage in 4 cases), the progressive neuro-dysfunction was in 5 cases,the progressive lumbodorsal pain was in 6 cases. All 18 patients with kyphosis were treated with anterior internal fixation remaining posterior fixation (9 cases) and anterior internal fixation after posterior fixation removal (9 cases).

RESULTSAll the patients were followed up from 18 to 50 months with an average of 30.5 months. No intetnal fixation loosening and breakage were found, moreover, X-ray and lamellar CT showed bone healing well. Preoperative, postoperative at 3 months and at final follow-up, ODI score was respectively 31.6+/-5.1, 8.6+/-5.7, 8.3+/-3.2; VAS score was respectively 7.2+/-2.3, 2.3+/-0.7, 2.1+/-1.1; kyphosis angle was respectively (-21.2/-+7.8 degreeso, (-5.3+/-6.8 degrees ), (-5.8+/-7.8 )degrees. Compared with preoperative data ,above-listed items had obviously ameliorated(P<0.05).

CONCLUSIONTreatment of thoracolumbar fracture with posterior pedicle screw short-segment internal fixation may result in the complications such as bone nonunion ,internal fixation breakage and progressive kyphosis. Anterior reconstruction may be a good strategy for the failure of posterior operation.

Adult ; Bone Screws ; Female ; Fracture Fixation, Internal ; adverse effects ; methods ; Humans ; Lumbar Vertebrae ; injuries ; surgery ; Male ; Middle Aged ; Postoperative Complications ; etiology ; Retrospective Studies ; Spinal Fractures ; surgery ; Thoracic Vertebrae ; injuries ; surgery

Sulfur compounds in the diesel were selectively derived into methylsulfonium salts by reacting with iodomethane in the presence of silver tetrafluoroborate, and characterized by positive-ion electrospray ionization (ESI) fourier transform ion cyclotron resonance (FT-ICR MS). The conversion ratios and react selectivities of the methylation for various sulfur compounds were investigated by gas chromatograph coupled with pulse flame photometric detector (GC-PFPD). Result shows that the sulfur compounds in the diesel can react with iodomethane easily at room temperature, the most of sulfur compound derived into methylsulfonium salts;the homologue of benzothiophene get the higher conversion ratio and react selectivity than the homologue of dibenzothiophene (DBT). It is found that primarily sterically hindered alkylated DBT, for example, 4- or 4-, 6- DBT, is recalcitrant to be methylated. Other than benzothiophenes and dibenzothiophenes, one- and two-ring sulfides, as well as other sulfur compounds with a double bond equivalent (DBE) value ranged from 1 to 12 are identified in the diesel.

Objective To investigate the effects of contrast dose and region of interest (ROI) depth on quantitative analysis of liver by contrast-enhanced ultrasound (CEUS) during clinical application.Methods After bolus injection of contrast agent,the change of quantitative parameters [including echo mean(EM),rise time(RT),peak intensity(PI),mean transit time(MTT),area under the curve(AUC),time from peak to one half(TPH),wash in slope(WIS),time to peak(TTP)] of time-intensity curves were analyzed based on groups from different doses (1.0 ml and 1.6 ml) and different depth (＜30 mm,30-60 mm,and ≥60 mm).Results MTT and TPH were increased with dose increasing from 1.0 ml to 1.6 ml (P＜0.05).With the dose 1.0 ml,TPH,WIS,PI,AUC and MTT showed significant difference when the depth of the ROI changes (P ＜0.05),with the depth increased,TPH,WIS,PI,and AUC all decreases and MTT increases.For all the other parameters,no significant changes were found (P ＞0.05).Conclusions CEUS and its imaging process can directly influence the accuracy of the parameters from the quantitative analysis.Standardization of contrast agent with predefined dose and depth can potentially facilitate future clinical studies in liver CEUS.

OBJECTIVETo explore the clinical effects of vacuum sealing drainage (VSD) in treating wound disunion after operation of fracture of calcaneus.

METHODSFrom June 2008 to December 2011, 11 patients with fracture of calcaneus complicated with wound ischemic necrosis and disunion after operation. There were 10 males and 1 female, aged from 21 to 55 years with an average of 39 years, and the course of disease in range from 7 to 9 weeks. These patients were treated with surgical debridement and VSD technique. According to calcaneal intraarticular fracture standard of ZHANG Tie-liang to evaulate the effects.

RESULTSWound area and autogeneic skin grafts healed after operation. All patients were followed up from 6 to 18 months with an average of 11 months. No wound infection and chronic osteomyelitis were found. According to above standard, 6 cases got excellent results, 4 good and 1 fair.

CONCLUSIONVSD technique in treating postoperative wound disunion of fracture of calcaneus can obtain satisfactory effects.

Adult ; Calcaneus ; injuries ; Female ; Fractures, Bone ; surgery ; Humans ; Male ; Middle Aged ; Negative-Pressure Wound Therapy ; methods ; Postoperative Complications ; therapy ; Vacuum ; Wound Healing

Objective To investigate the genetic characteristic of whole-genome of influenza A/H3N2 viruses in severe acute respiratory infection cases in Beijing area.Methods From 2014 to 2016,the viral RNA was extracted from 32 strains isolated from SARI cases,then sequenced by Ion Torrent PGM Sequencer.The phylogeny and molecular features of whole-genome were analyzed by Mega and Consurf software.Results The HA gene of tested strains isolated in 2014-2015 influenza season belonged to lineage 3C.3a and 3C.2a,while those isolated in 2015-2016 influenza season belonged to cluster 3C.2a.Moreover,compared with the vaccine strains,7 variant amino acids of protein of HA1 were identified,and two of them were located in antigenic sites.All isolates were sensitive to neuraminidase inhibitors while showed resistance to blockers for M2 ion channel.Conclusion The phylogenetic features of isolates studied in this study are similar with that of current circulating strains.However,the difference between isolates and vaccines should not be overlooked.

According to different epochs and development needs, a series of practices on environmental health and sanitary engineering were carried out, which played significant roles in promoting national economic and social developments and protecting the public health. This paper reviewed the main achievements in the past 70 years infields of patriotic health campaign, water sanitation and toilet improvement in rural areas, surveillance and investigation, health standard system, sanitary engineering equipment, stove improvement etc., and then proposed several prospects in the future.

According to different epochs and development needs, a series of practices on environmental health and sanitary engineering were carried out, which played significant roles in promoting national economic and social developments and protecting the public health. This paper reviewed the main achievements in the past 70 years infields of patriotic health campaign, water sanitation and toilet improvement in rural areas, surveillance and investigation, health standard system, sanitary engineering equipment, stove improvement etc., and then proposed several prospects in the future.

OBJECTIVE The objective of this study is to discuss when to dissect the lymph nodes behind the right recurrent laryngeal nerve (LN-prRLN) from the standpoint of the right cervical level Ⅵ-1 (superficial layer to the recurrent laryngeal nerve) lymph nodes in papillary thyroid carcinoma (PTC) patients.METHODS The clinical data of 306 bilateral or right PTC patients from the Hangzhou First People's Hospital who underwent dissection of level Ⅵ-1 lymph nodes and LN-prRLN between March 2014 and September 2015 were analyzed. We measured the number of level Ⅵ-1 metastatic lymph nodes and size of level Ⅵ-1 lymph nodes metastasis loci to predict the metastasis of LN-prRLN.RESULTS The number of level Ⅵ-1 metastatic lymph nodes and size of level Ⅵ-1 lymph nodes metastasis loci were risk factors of LN-prRLN metastasis(P<0.05). When the number of the level Ⅵ-1 metastatic lymph nodes was greater than 1.5, the AUC was 0.813 (the sensitivity was 78.43%, the specificity was 76.65%). The ROC showed that when the size of level Ⅵ-1 lymph nodes metastasis loci were more than 0.45 cm, the AUC was 0.726 (sensitivity was 90.20%, specificity was 48.90%).CONCLUSION In bilateral or right PTC patients with metastasis of level Ⅵ-1 lymph nodes, especially when the number of level Ⅵ-1 metastatic lymph nodes was greater than 2cm and the metastasis loci were more than 0.45 cm, we should dissect the LN-prRLN.

Objective To investigate whether pro-inflammatory cytokines ( PICs) in the paraventricular nucleus ( PVN) regulate the enhanced sympathetic activities in spontaneously hypertensive rats ( SHR) , and whether N-methyl-Daspartate receptor ( NMDAR ) in PVN mediate the effects of PICs on sympathetic activities. Methods SHR and normotensive wistar-Kyoto( WKY) rats were used in this experiment. TNF receptor and IL-1β receptor ( IL-1RI) protein levels were measured by Western blot. PICs, including TNF-α and IL-1β levels were measured by ELISA. Rats were placed in a stereotaxic instrument to complete the microinjection of drugs. The coordinates for the PVN were determined according to the Paxinos and Watson rat atlas. The raw RSNA and integrated RSNA were simultaneously recorded on a PowerLab data acquisition system. The right carotid artery was cannulated for recording of mean arterial pressure ( MAP) . Results TNF-α receptor p55TNFR, p75TNFR and IL-1βreceptor IL-1RI protein expression and TNF-αand IL-1βlevels in PVN were all increased in SHR compared with WKY rats (P< 0. 05). Bilateral microinjection of etanercept or IL-1ra into PVN to block the effects of TNF-αor IL-1βdecreased the sympathetic activities in SHR rats significantly (P< 0. 05). Bilateral microinjection of NMDAR blockers, both DL-2amino-5-phosphonovaleri acid ( APV) and MK-801 ( Dizocilpine) into PVN decreased the RSNA and MAP in both SHR and WKY rats. APV or MK 801 caused greater decreases in RSNA and MAP in SHR than WKY rats. In addition, pretreatment with APV or MK 801 attenuated the increased RSNA and MAP caused by microinjection of TNF-αor IL-1βinto PVN to a lower level in SHR than in WKY rats (P< 0. 05). Conclusions TNF and IL-1βreceptor protein as well as TNF-αand IL-1βcytokines levels in PVN are all increased in SHR rats. NMDAR in PVN mediates enhanced sympathetic activities and elevated blood pressure caused by TNF-αand IL-1βin SHR.