Objective To investigate the protective effects of felodipine on mRNA levels of endothelial nitricoxide synthase (eNOS) and inducible nitricoxide synthase (iNOS) as well as the level of nitrogen monoxidum (NO) from human umbilical vein endothelial cells (HUVECs) injuryed by oxidized low density lipoprotein (ox-LDL). Methods Isolated HUVECs were divided into blank control group,ox-LDL injury group treated with ox-LDL of different concentrations (6,12.5 and 25 mg/L),and intervention group of felodipine (0.1,1.0 and 10 ?mol/L)+ox-LDL (25 mg/L). Then eNOS and iNOS expressions were measured by real time-polymerase chain reaction and the level of NO in the supernatants of the cultures was assayed by nitrate reductase method. Results The mRNA expressions of eNOS and iNOS in HUVECs and NO level in the supernatants during treatment with different ox-LDL concentrations were higher than those in control group. However,felodipine significantly down-regulated the expression of iNOS in HUVECs injured by ox-LDL and inceased NO generation. Conclusion Felodipine has protective effects on endothelial cells. The mechanism may be related to its lowering the mRNA expression of iNOS induced by low ox-LDL concentration and increasing NO production.

Objective To investigate the protective effect of felodipine on reactive oxygen species (ROS) generation,mRNA level of inflammatory factors such as intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1),in human umbilical vein endothelial cells (HUVECs) injured by oxidized low-density lipoprotein (ox-LDL) so as to explore felodipine's anti-atherosclerosis mechanism independent of its anti-hypertensive effect. Methods Isolated HUVECs were treated with ox-LDL at different concentrations (6,12.5 and 25 mg/L) for 24 hours so that the optimal concentration and time of ox-LDL treatment were selected. Then the cells were incubated with ox-LDL and treated with felodipine at different concentrations (0.1,1 and 10 ?mol/L). Intracellular ROS level was determined by flow cytometry (FCM). Expressions of inflammatory factors ICAM-1 and VCAM-1 were measured by real time-polymerase chain reaction (real time-PCR). Results ROS generation was increased in HUVECs after treatment with different concentrations (6,12.5 and 25 mg/L) of ox-LDL for 24 hours and there was a significant difference at 25 mg/L ox-LDL (P

Objective:To study the clinical value of left ventricle Tei index in evaluating hemodynamics after interventional therapy of patent ductus arteriosus (PDA).Methods:From May 2017 to May 2019, 50 children with PDA who underwent interventional therapy (PDA group) and 27 healthy children (healthy control group) in Anhui Provincial Children’s Hospital were selected. The left ventricle Tei index, plasma brain natriuretic peptides (BNP), left ventricular end-diastolic dimension (LVDD), left ventricular ejection fraction (LVEF) were compared between 2 groups.Results:The left ventricle Tei index was not correlated with heart rate and age in 2 groups ( P>0.05). The left ventricle Tei index before operation in PDA group was significantly lower than that in healthy control group: 0.20(0.16, 0.25) vs. 0.27(0.20, 0.30), and there was statistical difference ( P<0.05). In PDA group, the left ventricle Tei index immediately, 3 d, 1 month and 3 months after operation was significantly higher than before operation: 0.38(0.29, 0.47), 0.32(0.26, 0.40), 0.30(0.27, 0.35) and 0.32(0.26, 0.37) vs. 0.20(0.16, 0.25), and there was statistical difference ( P<0.05); the plasma BNP immediately after operation was significantly lower than before operation: 288 (126, 433) ng/L vs. 582 (303, 1 675) ng/L, and there was statistical difference ( P<0.05); the LVDD 3 months after operation was significantly lower than before operation: (3.03 ± 0.54) cm vs. (3.38 ± 0.51) cm, and there was statistical difference ( P<0.05); the LVEF immediately after operation was significantly lower than before operation: (54.24 ± 6.09)% vs. (59.45 ± 5.93)%, the LVEF 1 and 3 months after operation was significantly higher than that immediately after operation: (63.18 ± 4.71)% and (65.46 ± 4.78)% vs. (54.24 ± 6.09)%, and there were statistical differences ( P<0.05). The left ventricle Tei index before operation was negatively correlated with inner diameter of PDA and plasma BNP ( r = -0.362 and -0.388, P = 0.013 and 0.009), and there was no correlation between LVDD and LVEF ( r = -0.192 and -0.283, P = 0.229 and 0.053); the differences of Tei index before operation and immediately after operation (ΔTei) was positively correlated with inner diameter of PDA ( r = 0.325, P = 0.030), and there was no correlation with BNP, LVDD and LVEF ( r = 0.234, 0.283 and -0.039, P = 0.126, 0.076 and 0.798). Conclusions:The left ventricle Tei index can quickly and accurately assess the change of hemodynamics after interventional therapy of PDA.

OBJECTIVETo observe the changes of proximal femoral geometry after femoral neck fracture treated with THA, analyze the existent of differences and their manifestation.

METHODSAll patients of femoral neck fracture (FNF) and osteonecrosis of femoral head (ONFH) were treated with THA by the same operating team from January to December of 2014, including 22 patients with FNF (11 males and 11 females,with age from 44 to 83 years old (means 66.18 ± 11.47) and 23 patients with ONFH (12 males and 11 females, with age from 19 to 68 years old (means 51.91 ± 11.76). After THA, height of femorals, offsets, osteotomy position and adjusting modes were measured and the statistic analysis was done.

RESULTSAfter THA, all patients were measured. Decreased femoral height, offsets and lower osteotomy positions were found in patients with FNF than those with ONFH, and 3 kinds of adjustments because of lower-positional osteotomy were found.

CONCLUSIONAfter THA, lower-positional osteotomy and decreased femoral offsets may occur on patients with FNF. The adjustments caused by lower-positional osteotomy may lead to negative results.

Adult ; Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Hip ; methods ; Female ; Femoral Neck Fractures ; pathology ; surgery ; Femur ; pathology ; Femur Head Necrosis ; pathology ; surgery ; Humans ; Male ; Middle Aged

Objective To explore the clinicalpathological characteristics of Lynch syndrome associated ovarian cancer.Methods Totally 260 cases ovarian cancer patients were admitted to Tianjin Medical University General Hospital during Jan.2004 and Jan.2011,among which 10 patients( LS group) belonged to Lynch syndrome associated ovarian cancer according to Amsterdam Ⅱ criteria.One hundred ovarian cancer patients without any family cancer history were enrolled randomizely as control group (sporadic group).Results Lynch syndrome associated ovarian cancer accounted for 3.8％ ( 10/260),the incidence rate of ovarian cancer for female family members of Lynch syndrome was 8.7％ ( 10/115 ).Mean age at time of diagnosis in LS group was (46 ±7) years,significantly earlier than that in sporadic group [ (56 ±11 ) years,P ＜ 0.05 ].There was no statistical difference between two groups in histological type or International Federation of Gynecology and Obstetrics ( FIGO ) stage ( P ＞ 0.05 ).Most of the tissue differentiation in LS group were well or moderate differentiated,there was statistical difference between the two groups(9/10 vs.55％,P ＜0.05).The 3-year and 5-year survival rate in LS group were 87.5％ and 52.5％respectively,compared with 55.4％and 22.7％ in sporadic group(all P＜0.05).Conclusion Compared with sporadic ovarian cancer,Lynch syndrome associated ovarian cancer is more likely present as the clinicalpathological characteristics of early age of onset,serous adenocarcinoma,lower grade and better prognosis.

Objective To improve the diagnostic ability of leukoencephalopathy with cerebral calcifications and cysts (LCC),a rare central nervous system disease.Methods The clinical manifestations,neuroimages and neuropathological features of a 19-year-old male patient were analyzed.A total of 20 cases from 14 literatures were reviewed.Results The patient was admitted with right limb weakness,cognitive decline,headache and blurred eyesight.Head CT scan showed multiple calcifications,cysts formation and leukoencephalopathy.Brain MRI showed several cysts in bilateral hemisphere,basal ganglia,thalamus and paraventricular areas.A mural nodule was noted inside one of the cyst,which was enhanced on the contrasted MRI.The wall of the cysts was partially enhanced,but not with the fluid inside the cysts.The corresponding CT calcifications foci showed on T1 and T2 with either both hyperintensity or both hypointensity,which was also partial enhanced.Extensive leukoencephalopathy was formed around the cysts and the ventricles.But neither Cho nor NAA changed a lot on MRS.Amplitude diagram of SWI series exhibited multiple round small dark signals all over the affected areas with mixed signals showed in the phase diagram,which indicated both calcifications and microbleedings at the lesions.Neuropathological examinations found no tumor cells in the operated cyst,and showed angiomatous small blood cells were dominant in the cyst wall.Hyaline degenerations,microcalcifications and hemosiderin deposition were observed.No obvious demyelination was discovered,while gliosis,numerous Rosenthal fibers and fibrinoid vascular necrosis were found around the lesions.The clinical,neuroimaging and pathological features of this patient were in accordance with the cases reported in the literatures.Conclusions Neuroimaging is the most important method for the diagnosis of LCC.As small vessel lesions are probably closely related to the pathophysiology of LCC,SWI could be recommended to further reveal the etiology of LCC.

Objective To analyze the clinical,imaging and pathological features of cortical vein thrombosis (CoVT).Methods Three cases of cortical vein thrombosis were diagnosed in our hospital from February 2010 to October 2012.We reviewed and summarized their clinical manifestation,radiological feature and pathological characteristics.Results All patients were young with acute onset.The main clinical manifestations included headache,epilepsy or limbs weakness.Two cases had intracranial hypertension.One case had decreased activity of protein S.One had increased plasma homocysteine.Brain computed tomography scan showed hypodensity lesion with some hyperdensity inside.Cranial routine magnetic resonance imaging showed long signal in T1-weighed image and T2-weighed image,with occasional short T1 signal inside.Contrast-enhanced magnetic resonance imaging revealed heterogeneous enhancement.All of 3 cases underwent brain biopsy because of the suspected diagnosis of brain tumor.Brain pathology showed the local necrosis and hemorrhage,dilated small vein with congestion or thrombosis.Neuronal degeneration,hyperplasia of gliocyte,hyperplasia of endotheliocyte in small blood vessels with reaction of histiocytes was also displayed.Duration from initial visit to final diagnosis was from 14 days to 2 months.Conclusions CoVT has various clinical and radiological manifestations and it is easy to misdiagnose as brain tumor.Careful analysis of clinical and imaging data could improve its diagnostic accuracy.Brain biopsy would also be helpful for diagnosis.

Objective To report the clinical and pathological characteristics of one patient with glycogen storage disease Ⅳ (Anderson disease). Methods The patient was received detailed clinical examinations, ultrasound, electromyography, head MRI and muscle biopsy. Results The onset of the 22 years old male patient was 7yrs. The main symptoms were intolerance and fatigue in proximal limbs muscular movement, cardiopalmus by chance. Abdominal ultrasound examinations showed cirrhosis, portal hypertension, splenomegaly. Echocardiogram showed left ventricular myohypertrophia, mild mitral and tricuspid valve insufficiency. Electrophysiology study revealed widespread myogenic changes. Cranial MRI, MRA and MRS were normal. Muscle biopsy showed basophilic intracytoplasmic material in a lot of fibers deposits, which was intensively PAS-positive material and partially resistant to diastase digestion. In the electron microscope, the storage material consisted of filamentous and finely granular material. Conclusions There was the first case of glycogen storage disease Ⅳ reported in our country, mainly involved skeletal muscle, liver, spleen and cardiac muscle.

OBJECTIVETo evaluate antisense technology for human telomerase inhibition in the treatment of endometrial cancer.

METHODSAn antisense oligodeoxynucleotides (AODN) directed against the human telomerase transcriptase (hTERT), designed and synthesized to serve as a telomerase inhibitor, was transfected into endometrial carcinoma cell line HEC-1A by lipofectin. Reverse transcription-polymerase chain reaction (RT-PCR) and Western blot were used to test the expression of hTERT mRNA and hTERT protein before and after transfection. Telomerase activity was tested by telomeric repeat amplification protocol. The proliferation and growth of HEC-1A were also studied by methyl thiazolyl tetrazolium and cell growth curve before and after transfection.

RESULTSAODN could down-regulate the expression of hTERT mRNA and protein, inhibiting telomerase activity and proliferation of endometrial cancer cell line in a dose- and period-dependent manner.

CONCLUSIONAntisense oligodeoxynucleotides of human telomerase transcriptase definitely inhibits the proliferation of endometrial cancer cell line. Telomerase inhibitor may thus become a new gene therapeutic agent for endometrial carcinoma.

Caspases ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; Endometrial Neoplasms ; pathology ; therapy ; Female ; Genetic Therapy ; Humans ; Oligonucleotides, Antisense ; genetics ; RNA, Messenger ; analysis ; Telomerase ; antagonists & inhibitors ; genetics

Computed tomography (CT) is considered the most sensitive method for the detection of intraocular foreign bodies (IOFBs).The purpose of this study was to evaluate a new method of 3-dimentional (3D) localization of IOFBs that takes advantage of the anatomical structure of the optic nerve and to assess the clinical outcomes using this new method.Twenty-two trauma patients with IOFBs or suspected IOFBs admitted to our hospital were scanned with multislice CT (MSCT) between July and December 2003.All scanning was performed with a 16-row spiral CT in axial plane using a sequential scanning protocol.During the scanning,the eyeball of the patient was kept stable and was not allowed to rotate internally or externally.Section collimation was set at 16 mm × 0.75 mm.Table feed was 12 mm.Reconstruction index was 0.75 mm.After scanning,the reconstructed images were loaded into a workstation to create the multiplanar reconstruction images with the aid of the 3D software.We compared the localization results with the operative findings.Multiplanar reconstruction images showed IOFBs in all 22 patients.IOFBs occurred in the eyeball of 14 patients,in the wall of the eyeball of 5 patients and in the posterior orbits of 3 patients.Different surgical procedures were designed according to the localization by this new method and all IOFBs were successfully removed.All of these foreign bodies were metallic and the localization of IOFB using MSCT was consistent with that found by operative findings.It was suggested that MSCT is a simple and effective imaging modality for the localization of IOFBs.In our study,we localized the IOFBs more quickly and accurately by taking advantage of the fixed position of the intraocular segment of the optic nerve,and determined the necessary surgical parameters.