OBJECTIVETo analyze the perioperative complications of percutaneous kyphoplasty (PKP) for osteoporotic vertebral compression fracture.

METHODSFrom June 2009 to December 2011, 63 patients with osteoporotic vertebral compression fracture underwent PKP, there were 18 males and 45 females with an average age of 75.3 years ( ranged, 62 to 91). All patients with severe back pain and without neurological symptoms and signs, which were confirmed by X-ray and MRI. Among them,there were 63 cases with severe osteoporosis, 37 cases with hypertension, 10 with coronary artery disease, 29 with anemia, 26 with diabetes, 11 with chronic obstructive pulmonary diseases and 8 with gastritis and peptic ulcer. The common perioperative complications were retropectively reviewed.

RESULTSPreoperative complications occured in 9 cases (14.3%), including hypostatic pneumonia (1 case), electrolyte disturbances (2 cases), urinary tract infection (2 cases), moderate anemia(2 cases),electrolyte disturbances combined with moderate anemia (1 case), hypostatic pneumonia combined with delirium (1 case). Intraoperative and postoperative. complications occurred in 17 cases (26.9%), there were bone cement correlated complications in 9 cases (14.3%), in which 2 cases of toxic reaction of bone cement and 7 cases of leakage (2 cases had clinical symptoms); there were non-bone cement correlated complications in 3 cases (4.8%), in which 1 case of focal hematoma caused by paracentesis, 1 case of transient nerve injury, 1 case of left intercostal neuralgia;there were transient hyperpathia in 5 cases after operation. All complications result in no severe consequence after treatment.

CONCLUSIONPerioperative complications of percutaneous kyphoplasty are not uncommon,however,these complications may not cause serious consequence after active treatment,so prevention and treatment are important for it.

Aged ; Aged, 80 and over ; Female ; Fractures, Compression ; surgery ; Humans ; Intraoperative Complications ; etiology ; Kyphoplasty ; adverse effects ; Male ; Middle Aged ; Osteoporotic Fractures ; surgery ; Postoperative Complications ; etiology ; Retrospective Studies

OBJECTIVETo analyze the complications of percutaneous kyphoplasty except bone leakge for the treatment of osteoporotic thoracolumbar vertebral compression fractures.

METHODSFrom October 2008 to October 2012,178 patients with 224 osteoporotic vertebral compression fractures were treated with percutaneous kyphoplasty under local anethsia. There were 72 males and 106 females,ranging in age from 58 to 92 years old,with an average of 75.3 years,including 93 thoracic vertebrae and 131 lumbar vertebrae. The complications except bone cement leakage were analyzed during operation and after operation.

RESULTSAll operations were successful and all patients were followed up from 12 to 60 months with an average of 26.2 months. No death was found. Bone cement leakage occurred in 27 cases, about 15.1% in 178 cases; and complications except bone cement leakage occurred in 15 cases. There was 1 case with cardiac arrest,was completely recovery by cardiopulmonary resuscitation (CPR) immediately; and 1 case with temporary absence of breathing,was recovery after treatment. There were 3 cases with fall of blood pressure and slower of heart rate; 1 case with intestinal obstruction; 2 cases with local hematoma and 1 case with intercostal neuralgia. Vertebral body fractures of 2 cases were split by bone cement and the fractures of adjacent body occurred in 4 cases.

CONCLUSIONIt's uncommon complication except bone cement leakge in treatment of osteoporotic thoracolumbar vertebral compression fractures with percutaneous kyphoplasty. The complication of cardiopulmonary system is a high risk in surgery; and cytotoxicity of bone cement,nervous reflex,fat embolism and alteration of intravertebral pressure may be main reasons.

Aged ; Aged, 80 and over ; Female ; Fractures, Compression ; surgery ; Humans ; Kyphoplasty ; adverse effects ; Lumbar Vertebrae ; injuries ; surgery ; Male ; Middle Aged ; Osteoporotic Fractures ; surgery ; Postoperative Complications ; etiology ; Spinal Fractures ; surgery ; Thoracic Vertebrae ; injuries ; surgery

Three tricyclic [6,5,7] and six tetracyclic [6,5,5,5] novel indole alkaloids were synthesized and evaluated on triglyceride inhibitory activities for the first time. Among them, compound 4c showed the most potent activity with IC₅₀ value of 6.35 μmol·L^-1. Meanwhile, compound 4c also exhibited a good safety profile at the cellular level. Preliminary mechanism study indicated that 4c might increase intracellular lipid metabolism by activating AMPK. These results provide a novel family of lead compounds for the discovery of anti-NAFLD candidates.

OBJECTIVETo isolate single chain antibody fragments (scFv) against cell surface molecules by pathfinder selection from an anti-KG1a cell scFv phage library.

METHODSThe anti-KG1a scFv library was enriched by KGla cell panning for three rounds, or unenriched, then processed for pathfinder selection respectively using anti-CD34 monoclonal antibody as pathfinder molecule. ScFv phage clones were randomly picked and identified by binding KG1a cells using immunofluorescein and flow cytometry. The KG1a+ clones were further identified by KG1a, HL60, U937, and CEM cell lines and ELISA. Their antigenic molecules on cell surface were digested by chymopapain and analyzed by flow cytometry. DNAs from ten positive clones were sequenced. The scFv clones with different primary structure were used to analyze the molecular weight of their antigens by Western blot.

RESULTSOne hundred and two KG1a+ scFv phage clones were isolated from 144 enriched and 96 unenriched scFv phage library respectively, among which 47 bound KG1a, HL60, U937, and CEM cells, 55 bound KG1a cells exclusively. None of 28 KG1a+, HL60-, U937-, and CEM- scFv clones bound to the CD34 antigen, as confirmed by ELISA, although most of their antigens were sensitive to chymopapain digestion. DNA sequences from ten positive clones showed that they were from four different clones. They bound antigens with different molecular weight.

CONCLUSIONSOne hundred and two scFv phage clones specific for hematopoietic stem and progenitor cells have been isolated from an anti-KG1a cell scFv phage library. The pathfinder selection has showed advantages to improve the screening efficacy of scFv phage clones against antigens, which present at very low densities on the cell surface.

Antibodies, Anti-Idiotypic ; immunology ; Antibodies, Monoclonal ; genetics ; Antibody Specificity ; Bacteriophages ; genetics ; Cloning, Molecular ; Hematopoietic Stem Cells ; immunology ; Humans ; Immunoglobulin Fc Fragments ; biosynthesis ; genetics ; immunology ; Immunoglobulin Fragments ; genetics ; immunology ; Immunoglobulin Variable Region ; genetics ; immunology ; Peptide Library ; Single-Chain Antibodies

OBJECTIVETo study the role of the feeder layer cells as niche in the process of expansion of late endothelial progenitor cell in vitro.

METHODSWe cultured mononuclear cells (MNC)from human peripheral blood (PB)on the plate with the feeder layer cells which were irradiated late endothelial progenitor cells(EPC)or human umbilical vein endothelial cells (HUVEC) by EGM-2. After 21 days, the numbers of obtained late EPC colonies were counted separately, and their surface antigen of the late EPC was verified by fluorescence-activated cell sorter (FACS) analysis, and their ability of forming vessel structure with Matrigel in vitro. The differentiation of single stem cell on the feeder layer cell was traced by video-microscopy.

RESULTSAfter 21 days of culture,(40.0±3.9)and(39.3±3.1)late EPC colonies that MNC of a hundred milliliter PB were cultured, respectively, on the feeder layer cells of EPC and HUVEC were much more than (2.0±1.3) colonies cultured on without the feeder layer cells (all P <0.05). These cells also expressed CD31,CD34,eNOS,FLt-1,P1H12,Sendo,VE cadherin,and CD117, as shown by FACS analysis. Furthermore, they formed vessel structure with Matrigel in vitro. The video-microscopy showed the asymmetric cell division was participated by the feeder layer cell during the expansion of single stem cell.

CONCLUSIONThe massive expansion of late EPC can be achieved by the provision of the feeder layer cells, which may be involved in the stem cell asymmetric cell division.

Cell Communication ; Cell Culture Techniques ; Cell Differentiation ; Cell Proliferation ; Cellular Microenvironment ; Endothelial Cells ; cytology ; Feeder Cells ; Fetal Blood ; cytology ; Human Umbilical Vein Endothelial Cells ; cytology ; Humans ; Stem Cells ; cytology ; Trophoblasts ; cytology

Adult ; Aged ; Anthracosis ; diagnostic imaging ; therapy ; Bronchoalveolar Lavage ; Humans ; Lung ; diagnostic imaging ; Male ; Middle Aged ; Radiography

OBJECTIVETo assess the characteristics and daily treatment compliance of non-alcoholic fatty liver disease (NAFLD) patients in China.

METHODSNAFLD adult patients from 21 clinics of 12 cities in China were enrolled in this registry. Physical examination such as demographic characteristics (height, weight, waist circumference measurement), blood pressure and clinical laboratory and ultrasonographic examination of liver were undertaken. Daily practice including life style and medication were recorded and assessed in accordance with 2006 Chinese NAFLD treatment guidelines.

RESULTSA total of 1656 patients were enrolled (1146 male and 510 female), mean of 45.8 ± 12.6 years old, mean duration of NAFLD history was (47.2 ± 47.7) months. 44.9% of NAFLD were suffering from metabolic syndromes. Patients with central obesity have higher incidence of hypertension and lower level of high-density lipoprotein cholesterol (HDL-C) than those without central obesity, P < 0.05. Body mass index (BMI), waist circumference, triglyceride (TG) and low-density lipoprotein cholesterol (LDL-C) in ALT abnormal group were higher than those in ALT normal group (P < 0.05), HDL-C was lower in ALT abnormal group (P < 0.05). Significant differences existed between the BMI, female waist circumference, TG, fast insulin, HOMA index, ALT, AST and HDL-C among subgroups with mild, moderate and severe steatosis. Majority of the patients did not follow recommendations of NAFLD treatment guidelines. Among targeted population only 15.3% of patients used insulin sensitizers and 23.8% took lipid lowering medicine according to the guideline.

CONCLUSIONData indicated that nearly half of NAFLD patients co-morbid with metabolic disorders. Therapy compliance was unsatisfactory and the gap between current practice and Chinese NAFLD treatment guidelines was not optimal.

Adult ; Asian Continental Ancestry Group ; China ; epidemiology ; Fatty Liver ; diagnosis ; epidemiology ; therapy ; Female ; Humans ; Male ; Metabolic Syndrome ; epidemiology ; Middle Aged ; Non-alcoholic Fatty Liver Disease ; Risk Factors ; Waist Circumference

CD146 is a newly identified endothelial biomarker that has been implicated in angiogenesis. Though in vitro angiogenic function of CD146 has been extensively reported, in vivo evidence is still lacking. To address this issue, we generated endothelial-specific CD146 knockout (CD146(EC-KO)) mice using the Tg(Tek-cre) system. Surprisingly, these mice did not exhibit any apparent morphological defects in the development of normal retinal vasculature. To evaluate the role of CD146 in pathological angiogenesis, a xenograft tumor model was used. We found that both tumor volume and vascular density were significantly lower in CD146(EC-KO) mice when compared to WT littermates. Additionally, the ability for sprouting, migration and tube formation in response to VEGF treatment was impaired in endothelial cells (ECs) of CD146(EC-KO) mice. Mechanistic studies further confirmed that VEGF-induced VEGFR-2 phosphorylation and AKT/p38 MAPKs/NF-κB activation were inhibited in these CD146-null ECs, which might present the underlying cause for the observed inhibition of tumor angiogenesis in CD146(EC-KO) mice. These results suggest that CD146 plays a redundant role in physiological angiogenic processes, but becomes essential during pathological angiogenesis as observed in tumorigenesis.
Animals ; CD146 Antigen ; genetics ; metabolism ; Cells, Cultured ; Endothelial Cells ; cytology ; metabolism ; Female ; Fibrosarcoma ; metabolism ; pathology ; Male ; Melanoma, Experimental ; metabolism ; pathology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; NF-kappa B ; metabolism ; Neovascularization, Physiologic ; drug effects ; Phosphorylation ; drug effects ; Proto-Oncogene Proteins c-akt ; metabolism ; Retinal Vein ; growth & development ; pathology ; Signal Transduction ; drug effects ; Transplantation, Homologous ; Vascular Endothelial Growth Factor A ; pharmacology ; Vascular Endothelial Growth Factor Receptor-2 ; metabolism

OBJECTIVE: To investigate the incidence rate of infectious diseases during hospitalization in late preterm infants in Beijing, China, as well as the risk factors for infectious diseases and the effect of breastfeeding on the development of infectious diseases. METHODS: Related data were collected from the late preterm infants who were hospitalized in the neonatal wards of 25 hospitals in Beijing, China, from October 23, 2015 to October 30, 2017. According to the feeding pattern, they were divided into a breastfeeding group and a formula feeding group. The two groups were compared in terms of general status and incidence rate of infectious diseases. A multivariate logistic regression analysis was used to investigate the risk factors for infectious diseases. RESULTS: A total of 1 576 late preterm infants were enrolled, with 153 infants in the breastfeeding group and 1 423 in the formula feeding group. Of all infants, 484 (30.71%) experienced infectious diseases. The breastfeeding group had a significantly lower incidence rate of infectious diseases than the formula feeding group (22.88% vs 31.55%, CONCLUSIONS Breastfeeding can significantly reduce the incidence of infectious diseases and is a protective factor against infectious diseases in late preterm infants. Breastfeeding should therefore be actively promoted for late preterm infants during hospitalization.
Beijing/epidemiology* ; Breast Feeding ; China/epidemiology* ; Communicable Diseases/epidemiology* ; Female ; Hospitalization ; Hospitals ; Humans ; Incidence ; Infant ; Infant, Newborn ; Infant, Premature ; Male ; Pregnancy

OBJECTIVETo evaluate the clinical outcomes of percutaneous kyphoplasty (PKP) in treating senile osteoporotic vertebral compression fractures under local anesthesia.

METHODSFrom May 2007 to May 2010,129 patients with osteoporotic vertebral compression fractures were treated with PKP under local anesthesia. There were 47 males and 82 females, ranging in age from 61 to 92 years old,with an average of 73.7 years old,including 88 segments of thoracic vertebrae and 101 segments of lumbar vertebrae. Visual analogue scale (VAS),height of vertebral body,Cobb's angle were evaluated before and after operation.

RESULTSOperations were performed successfully in all patients and these patients were followed up from 24 to 60 months with an average of 34.2 months. Preoperative,postoperative two weeks and at final follow-up,VAS score was 7.9+/-2.5,2.8+/-1.8,3.0+/-2.2,respectively;Cobb angle was (28.3+/-13.7)degree, (16.2+/-9.8)degree, (19.1+/-10.3)degree, respectively. There was significant difference between postoperative and preoperative, and between at final follow up and preoperative (P<0.05). The height of vertebral body obtained partial recovery. Bone cement leakage occurred in 23 vertebrae (with proportion of 17.8%) during operation,among one patient with temporary clinical symptom of radiculalgia. All lumbago obtained obviously anesis after operation, 1 case complicated with respiratory depression and recovered after resuscitation; 1 case complicated with intestinal obstruction and improved after treatment, 1 case complicated with fracture separation of vertebral body by bone cement, and 4 cases complicated with fracture of adjacent vertebral body.

CONCLUSIONPercutaneous vertebral kyphoplasty is an effective method for treatment of senile osteoporotic vertebral compression fractures,which can expeditiously relieve pain and effectively recovery height of vertebral body and Cobb angle,it has advantages of minimal invasive. The results of short and mid-term follow-up were satisfactory, long-term follow-up is still needed. Correctly choosing the operative indication and improving surgical technique may avoid complications, especially bone cement leakage which is the most frequent complication.

Aged ; Aged, 80 and over ; Anesthesia, Local ; methods ; Female ; Follow-Up Studies ; Fractures, Compression ; surgery ; Humans ; Kyphoplasty ; adverse effects ; methods ; Male ; Middle Aged ; Osteoporotic Fractures ; surgery ; Spinal Fractures ; surgery