Animals ; Astrocytes ; metabolism ; Brain Ischemia ; metabolism ; pathology ; Glial Fibrillary Acidic Protein ; metabolism ; Neuroprotective Agents ; pharmacology ; Propofol ; pharmacology ; Random Allocation ; Rats ; Rats, Wistar ; Reperfusion Injury ; metabolism ; prevention & control

BACKGROUND:Lumbar disc herniation is the most common cause of lumbago in clinic, which seriously affect the patient's daily life, study and work. Therefore, studies on biomechanics of lumbar intervertebral disk benefit to prevent and treat the diseases associated with lumbar intervertebral disk. OBJECTIVE: To summarize the biomechanical progress of lumbar intervertebral disk. METHODS: The first author retrieved China National Knowledge Infrastructure and PubMed database for literatures published from 2009 to 2014. The key words were intervertebral disc, nucleus pulposus, biomechanics, fibrosis annulus, cartilage in Chinese and English, respectively. Articles regarding biomechanical characteristics of lumbar intervertebral disk, nucleus pulposus, fibrosis annulus and cartilage were included, and repetitive studies were excluded. Totaly 5 072 articles were retrieved initialy. In accordance with inclusion and exclusion criteria, 41 articles were included in result analysis. RESULTS AND CONCLUSION:We can fuly understand the pathogenesis, development and adverse consequences of diseases related to the lumbar intervertebral disk by summarizing the structural features and internal pressure of lumbar intervertebral disk and the effect of different loads, biomechanical characteristics of lumbar intervertebral disk with degenerative changes and establishment of mechanical model of lumbar intervertebral disk. It is of directive significance for daily health care of the lumbar intervertebral disk and how to better use force, a physical factor, to solve the lumbar intervertebral disk problems.

The mutation status of calreticulin gene (CALR) is helpful for the diagnosis of JAK2 / MPL mutation-negative myeloproliferative neoplasms (MPN), and is closely related to the MPN progression and prognosis.Currently, Sanger sequencing, PCR-fragment analysis, high resolution melting, Taqman RQPCRand the next generation sequencing have been reported to be used to detecting the CALR gene mutations.A proper method for CALR mutation detection and a right laboratory diagnostic procedure according to the MPN-related molecular markers will facilitate the rapid and effective diagnosis and treatment of MPN.

Objective To investigate the CT and MRI features of solid-cystic papillary tumors(SCPTs) of the pancreas.Methods Eight cases of SCPTs confirmed by operation and pathology underwent both plain and contrast-enhanced CT examination,and MR examination in three cases and contrast-enhanced MRI in two cases.Results In the eight patients,the mean tumor diameter was 7.6 cm and the lesions were found mainly in the body and tail of the pancreas,only one at the pancreatic head.On plain CT scan,the tumors appeared as huge solid-cystic mass with definite margin and an integritied capsul,the solid areas were papillary or irregular components,and the cystic areas in central were low attenuation.On contrast-enhanced CT,the cystic wall and solid part were slight enhancement in arterial phase,and moderate or obvious enhancement in parenchymal phase.Irregular ringed and punctate calcification could be seen in five cases,the acute hemorrhage occurred in one case,slight dilation of the pancreatic duct was noticed in one patient.MRI showed an ovoid solid-cystic mass of the pancreas with distinct border.On T1WI,heterogeneous iso-and hypo-intensity was observed.One case showing the high signal intensity in tumor was subacute hemorrhage.On T2WI,the tumors were mixed hypo-,iso-and hyperintensity.The papillary or flocculent solid portion and the cystic wall were enhanced after gadolinium was used.Conclusion SCPTs is of certain clinic,CT and MRI characteristic findings,which can aid in reaching a proper diagnosis.

Aged ; Anion Exchange Protein 1, Erythrocyte ; metabolism ; Brenner Tumor ; metabolism ; pathology ; surgery ; Carcinoma, Transitional Cell ; metabolism ; pathology ; surgery ; Chromogranin A ; metabolism ; Cystectomy ; Female ; Humans ; Hysterectomy ; Membrane Proteins ; metabolism ; Neoplasms, Multiple Primary ; metabolism ; pathology ; surgery ; Ovarian Neoplasms ; metabolism ; pathology ; surgery ; Urinary Bladder Neoplasms ; metabolism ; pathology ; surgery

Myelodysplastic syndromes ( MDS ) represent a heterogeneous group of clonal hematopoietic disorders with diverse clinical course .Because of the heterogeneity and the lack of molecular markers to monitor disease progression, clinical management of MDS patients is challenging .Recently, with the development of molecular analysis techniques , an increasing number of MDS related molecular biomarkers have been reported.In this review, we will discuss the clinical applications of the newly reported molecular makers in terms of diagnosis , prognosis and treatment.These markers may improve the diagnosis and prognostic assessment systems of MDS , which may potentially be used to guide decision making in the individual therapy.

Objective To investigate the effect of hypertension on the large artery elasticity index (C1),the small artery elasticity index (C2) and the medial structure of the ascending aorta as well as the relationship between artery elasticity and the medial structure of the ascending aorta.Methods Sixty patients with CHD receiving coronary artery bypass graft surgery at our hospital were divided into two groups:30 patients in the hypertension group and 30 patients in the non-hypertension group.C1 and C2 were measured using the CVProfilor DO-2020 system.Sections of tissues taken from the anterior wall of the ascending aorta during the surgery were subjected to Masson's trichrome staining for the detection of vascular smooth muscle and collagen fibers and Weigert's resorcin-fuchsin staining for the detection of elastic fibers.The relative areas of vascular smooth muscle fibers,collagen fibers and elastic fibers of the ascending aorta were measured by a computer image analysis system under the light microscope.The linear correlations of C1 and C2 with the medial structure of the ascending aorta were analyzed.Results C1 in the non hypertension group was higher than that in thehypertensiongroup[11.9±1.8 (ml/mmHg×10) w 13.1±2.5 (ml/mmHg×10),t 2.22,P ＜0.05].In the media of the ascending aorta,the relative content of collagen fibers was higher,while the relative content of elastic fibers was lower in the hypertension group than in the non-hypertension group [(46.0±3.8)％ w (42.2±3.0)％,(17.5±3.5)％ vs.(19.3 2.7)％,respectively,t=4.24 and 2.20,P＜0.01 or 0.05].C1 was positively correlated with the relative content of elastic fibers but negatively correlated with the relative content of collagen fibers in both groups (r=0.52 and 0.39,respectively,P＜0.05 or 0.01).Conclusions The main pathogenic basis of hypertension-induced decline in arterial elasticity in CHD patients is increased collagen fibers and reduced elastic fibers with disorganization of the two types of components.C1 may accurately reflect the effect of hypertension on medial collagen fibers and elastic fibers in the ascending aorta.

Objective To measure the renal cortex blood flow leVel in Patients with stage 3-4 chronic kidney disease, and to obserVe the effect of Probucol on renal cortex blood flow and renal function. Methods Twenty Patients with stage 3-4 chronic kidney disease in our hosPital were randomly diVided into treatment grouP ( 10 Patients ) and obserVation grouP ( 10 Patients). Ten healthy subjects were chosen as the control grouP. Dynamic sonograPhic tissue Perfusion measurement (DTPM) was used to eValuate the mean flow intensity (Imix),mean flow Velocity (Vmix) and tissue resistance index (TRI) in the three grouPs. Patients in the obserVation grouP were treated with standard theraPy;the treatment grouP was giVen Probucol 500 mg,twice daily in addition to standard theraPy for 6 months. The renal cortex blood flow leVel after treatment was measured in the treatment grouP and obserVation grouP. The serum BUN,SCr,TC,TG,LDL,HDL,hs_CRP,ox_LDL,PA,ALB before and after treatment were measured and comPared between the treatment grouP and obserVation grouP. Results Imix and Vmix were significantly lower,and TRI was significantly higher in the treatment grouP and obserVation grouP than in the control grouP (P<0. 01). After 6 months of treatment,Imix and Vmix in the treatment grouP were significantly increased and TRI significantly decreased as comPared with the baseline and the control grouP (P<0. 01). After treatment,Imix and Vmix were significantly decreased and TRI was significantly increased in the obserVation grouP (P<0. 05). In the treatment grouP,the serum BUN,SCr,TC,TG,LDL,hs_CRP and ox_LDL decreased and PA,ALB and HDL increased after treatment as comPared with the baseline and the obserVation grouP (P<0. 05 or P<0. 01). Conclusion The renal cortex blood flow leVel is significantly lower in Patients with stage 3-4 chronic kidney disease than in the healthy PeoPle. Probucol can imProVe the renal cortex blood flow leVel significantly,Protect the renal function, and imProVe microinflammatory state,nutrition status and dysliPidemia.

Objective To evaluate the usefuluness of the color Doppler flow imaging(CDFI) in subclinical atrial septal defects(ASD).Methods We reviewed 122 cases of subclinical ASD in adult which were first detected with CDFI.Results We found most of the patients were women and elder people,and no more special clinical symptoms and signs can be found.Color Doppler flow imaging had characteristic abnomallities making the dosis of ASD possible and easily with a high degree of accuracy in patients in whom the clinical presentation was atypical different magnitudes of left-to-right shunt were revealed in all these patients.Conclusion CDFI is a good noninvasive technique in the diagnosis of subclinical atrial septal defects.

Objective To investigate the mechanism and prevention of gallstones after esophageal cancer surgery.Methods Clinical data from 297 cases of esophageal cancer patients underwent surgical treatment from 2007 to 2010 inour hospital were retrospectively analyzed for the incidence of post-operative gallstones.ResultsNo cholecystitis and gallstones were detected by B-ultrosound before the operation in the 39 patients.13.1％ of the patients developed gallstones from 1 month to 3 years after the operation.The incidence was significantly higher than that in general population.Conclusion There is a high chance of gallstones in patients after radical resection of esophageal cancer.Cutting vagus nerve plays an important role in the incidence of gallstones.Preservation of vagus nerve during the surgery should be performed as possible.