This article reviews the structure, physical and chemical characteristics of bone morphogenetic protein, summarized the effects of bone morphogenetic protein on hematopoiesis in embryo and adult animal, discussed the possible mechanisms and pointed out the theoretic and practical significance on this research work.
Animals ; Bone Marrow Cells ; drug effects ; metabolism ; Bone Morphogenetic Proteins ; pharmacology ; Hematopoiesis ; drug effects ; Humans ; Interleukin-1 ; biosynthesis ; Interleukin-6 ; biosynthesis ; Research ; trends

OBJECTIVETo study the cytotoxic T lymphocyte (CTL) response induced by dendritic cells (DC) transduced with recombinant adenovirus vector bearing hepatitis B virus surface antigen (HBsAg) gene in hepatocellular carcinoma HepG2. 2. 15 cells in vitro.

METHODSFull length HBsAg cDNAs were subcloned into pIND vector, followed by being cloned into pShuttle vector. The HBsAg gene fragments resulted from the pShuttle-S digested with PI-Sce and I-Ceu were linked to the linear adeno-X virus DNA. After packaged with HEK293 cells, the adenovirus expression vector was obtained. Then the recombinant adenovirus expression plasmid AdVHBsAg was transfected into human monocyte-derived dendritic cells, to construct AdVHBsAg hepatocarcinoma tumor vaccine. The effectiveness of transfection was detected by Western blot. Surface molecules of AdVHBsAg-DC were detected by FACS. Autologous T cell proliferation stimulated by AdVHBsAg-DC was detected by 3H-TdR assay. Cytotoxic CTL activity induced by AdVHBsAg-DC in vitro was detected by LDH assay.

RESULTSHBsAg gene in the inserted DNA of AdVHBsAg was confirmed by PCR, and predictive fragments proved by restriction enzyme digestion analysis were exhibited. Cell pathological changes appear after 10 days HEK293 cells transfected AdVHBsAg. Western blot analysis showed that HBV surface antigen gene was expressed in transfected DC, indicating that the transfection was effective. AdVHBsAg-DC was able to upregulate CD1a, CD11c, CD80, CD86 and HLA-DR. Autologus T cell proliferation induced by AdVHBsAg-DCs was significantly higher than that in DC control group and LacZ-DC group (P < 0.05). AdVHBsAg-DC activated CTL presented the specific killer ability to the hepatocellular carcinoma cells expressing HBsAg.

CONCLUSIONDC transduced with recombinant adenovirus HBsAg can express HBV-related hepatocellular carcinoma antigen (HBsAg), and AdVHBsAg-DC can induce potent immune response against HBsAg-positive hepatocellular carcinoma cells in vitro.

Adenoviridae ; genetics ; Antigens, CD1 ; metabolism ; CD11c Antigen ; metabolism ; Cancer Vaccines ; immunology ; Carcinoma, Hepatocellular ; immunology ; pathology ; virology ; Cell Line, Tumor ; Cell Proliferation ; Cytotoxicity, Immunologic ; immunology ; Dendritic Cells ; cytology ; immunology ; metabolism ; Genetic Vectors ; Hepatitis B Surface Antigens ; genetics ; metabolism ; Humans ; Liver Neoplasms ; immunology ; pathology ; virology ; Plasmids ; Recombinant Proteins ; genetics ; metabolism ; T-Lymphocytes, Cytotoxic ; cytology ; immunology ; Transfection

AIMTo study the biliary excretion of genistein and its metabolite at different doses in rats.

METHODSSuspended in 0.5% CMC-Na solution, genistein was orally administered to rats at the dose of 6.25, 12.5 and 50 mg x kg(-1), separately. At various time intervals, the bile was collected. The bile was treated with beta-glucuronidase. The genistein in bile was extracted twice by vortexing with 2.0 mL mixture of methyl tert-tubtyl ether and pentane (8:2). The organic phase was removed into the tubes and then evaporated in ventilation cabinet. The residue was dissolved in 50 microL of methanol. Twenty microL solution was drawn and detected by high-performance liquid chromatography.

RESULTSThe accumulative biliary excretion of genistein was (42.56 +/- 6.54) , (75.17 +/- 18.87) and (126.60 +/- 34.78) microg at the dose of 6.25, 12.5 and 50 mg x kg(-1), respectively. The total drug (genistein plus glucuronidated genistein) excreted from bile was (108.46 +/- 35.23), (423.46 +/- 158.31) and ( 853.74 +/- 320. 84) microg, and the ratio of glucuronidated genistein was 60.76% , 82.25% and 85.17% at the dose of 6.25, 12.5 and 50 mg x kg(-1), respectively.

CONCLUSIONThe genistein was excreted mainly in the form of glucuronidated genistein in rat bile. The genistein and glucuronidated genistein were excreted in a nonlinear dose-dependent manner.

Administration, Oral ; Animals ; Bile ; metabolism ; Dose-Response Relationship, Drug ; Female ; Genistein ; chemistry ; metabolism ; pharmacokinetics ; Male ; Molecular Structure ; Phytoestrogens ; administration & dosage ; metabolism ; pharmacokinetics ; Rats ; Rats, Sprague-Dawley

PURPOSETo investigate the usefulness of three-dimensional (3D) printing in complex spinal surgery.

METHODSThe study was conducted from October 2014 to March 2015 in Shenzhen Second Peoples' Hospital and 4 cases of complex severe spinal disorders were selected from our department. Among them one patient combined with congenital scoliosis, one with atlas neoplasm, one with atlantoaxial dislocation, and the rest one with atlantoaxial fracture-dislocation. The data of the diseased region was collected from computerized tomography scans for 3D digital reconstruction and rapid prototyping to prepare photosensitive resin models, which were applied in the treatment of these cases.

RESULTSThe use of 3D models reduced operating time and intraoperative blood loss as well as the risk of postoperative complications. Furthermore, no pedicle penetrations or screw misplacement occurred according to the postoperative planar radiographic images.

CONCLUSIONThe tactile models from 3D printing allow direct observation and measurement, helping the orthopedists to have accurate morphometric information to provide personalized surgical planning and better communication with the patient and coworkers. Moreover, the photosensitive resin models can also guide the actual surgery with the drilling of pedicle screws and safe resection of tumor.

Aged ; Child ; Humans ; Male ; Precision Medicine ; Printing, Three-Dimensional ; Scoliosis ; surgery ; Spinal Diseases ; surgery ; Spinal Fractures ; surgery ; Spinal Neoplasms ; surgery

OBJECTIVETo assess the early curative effect of epidural or intravenous administration of steroids during a percutaneous endoscopic lumbar discectomy (PELD).

METHODS28 consecutive patients who underwent PELD due to large lumbar disc herniation between November 2014 and January 2016 were followed up for 6 months. These patients were divided into two groups according to the treatment they received after PELD. 14 patients (Group A) were treated by PELD and epidural steroids, while the other 14 patients (Group B) were treated by PELD and intravenous steroids. We evaluated the effectiveness by the preoperative and postoperative visual analogue scale (VAS) scores for back and leg pain, and the postoperative Oswestry disability index (ODI) at 3 weeks after surgery via the clinical charts and telephone interview. Postoperative hospital stay and time return to work were investigated as well.

RESULTSThere is a significant decrease in VAS (back, leg), ODI, and time return to work (p < 0.05). For VAS (back), Group A showed a significant decrease compared with Group B at 1 day and 1 week after surgery (p = 0.011, p = 0.017). As for VAS (leg), Group A showed a significant decrease compared with Group B at 1 day, 1 week, 3 weeks, and 3 months follow-up examinations (p = 0.002, p = 0.006, p < 0.001, p < 0.001). For ODI, Group A showed a notable decrease compared with Group B (p < 0.001). The postoperative hospital stay in two groups was not statistically different (p = 0.636). But the time return to work in Group A was significantly shorter than that in Group B (p = 0.023).

CONCLUSIONPatients who underwent PELD with epidural steroid administration for large lumbar disc herniation showed favorable curative effect compared with those who underwent PELD with intravenous steroid administration.

Adult ; Betamethasone ; administration & dosage ; Diskectomy, Percutaneous ; methods ; Endoscopy ; Female ; Glucocorticoids ; administration & dosage ; Humans ; Injections, Epidural ; Injections, Intravenous ; Intervertebral Disc Displacement ; surgery ; Length of Stay ; Lumbar Vertebrae ; surgery ; Male ; Pain Measurement ; Retrospective Studies

Through analyzing the indication distribution of the different acupoints located at the upper limbs recorded in
Acupuncture Points ; Arm ; Goiter ; Humans ; Meridians ; Tuberculosis, Lymph Node

A series of novel xanthones with terminal amine substituents at xanthone's C3 and C6 positions were designed and synthesized as potential ligands for telomeric G-quadruplex DNA. All the compounds in this series were bound to telomeric G-quadruplex in a "thread intercalation" manner that illustrated both in molecular docking and spectrometric studies. Among them, 10c and 10d showed better binding abilities and specific affinity toward G-quadruplex DNA HTG21 over ctDNA in the fluorescence assay. The antiproliferative activities of four screened compounds were examined in three cancer cells by MTT in vitro, and their inhibitory effects were observed at low micromolar ranges. In addition, the PCR stop assay demonstrated that 10c and 10d effectively inhibited the amplification ability of telomerase.

Objective: To investigate the expression and clinical significance of exosomal miR-1231 in plasma of pancreatic cancer (PC) patients and pancreatic cancer cells. Methods: A total of 16 patients who were diagnosed with pancreatic cancer in Hunan Cancer Hospital were collected from April 2016 to August 2017. Meanwhile, 16 healthy volunteers were recruited as the healthy control group at the same period. The plasma exosomes were extracted, and the levels of miR-1231 were detected by qRT-PCR in PC and healthy control groups. Moreover, the clinicopathological significance of exosomal miR-1231 expression was analyzed. Furthermore, the expression of exosomal miR-1231 was detected in several pancreatic cancer cells (MIA PaCa-2, PANC-1, SW1990, AsPC-1 and BxPc-3) and two normal pancreatic epithelial cells (HPDE and human primary pancreatic epithelial cell). Results: qRT-PCR results showed that the expression level of miR-1231 in plasma exosomes of pancreatic cancer patients (1.06±0.46) was significantly lower than that in healthy controls (2.30±0.99; P<0.05). The levels of exosomal miR-1231 in patients with stage Ⅰ-Ⅱ (1.515±0.531), no distant metastasis (1.236±0.461) and no lymph node metastasis (1.337±0.522) were significantly higher than those with stage Ⅲ-Ⅳ (0.848±0.224), distant metastasis (0.757±0.278) and lymph node metastasis (0.838±0.261), respectively (P<0.05 for all). In addition, there were no correlation between exosomal miR-1231 expression and age, sex, smoking history, CA19-9 levels and tumor sites (P>0.05). Furthermore, the expression level of exosomal miR-1231 in pancreatic cancer cell lines (0.142±0.135) was significantly lower than that in normal epithelial cells (1.127±0.179; P<0.05). Conclusions The downregulation of exosomal miR-1231 in plasma of pancreatic cancer patients and pancreatic cancer cells suggests that it is related to the initiation and development of PC. It may be a new diagnostic and prognostic marker for PC.

Humans ; Consensus ; Hypersensitivity ; Desensitization, Immunologic/adverse effects* ; Immunotherapy/adverse effects* ; Injections, Subcutaneous ; Allergens