Adult ; Blast Injuries ; therapy ; Explosions ; Humans ; Male ; Multiple Trauma ; therapy

Sepsis is a systemic inflammatory response syndrome resulting from a host response to infection. The early stage of sepsis is characterized by excessive inflammatory response, accompanied by immune dysfunction characterized by aggravating cellular immunosuppression. The vast majority of patients with sepsis survive the initial excessive inflammatory response, but die of hospital-acquired infection, opportunistic pathogenic bacteria infection, latent virus reactivation, and multiple organ dysfunction syndrome. These facts indicate that immunosuppression may be a significant cause of exacerbation of the illness even death of the septic patients. The primary cellular mechanisms in inducing immune dysfunction include immune dysfunction of T lymphocytes, negative regulation of regulatory T lymphocytes and dendritic cells, and damage of intestinal mucosa associated lymphoid tissue. Xuebijing injection is a complex Chinese patent medicine, which is widely used in the treatment of sepsis. It has a potential immunoregulation ability, as well as effects on bacteriostasis, anti-endotoxin and anti-inflammation. Its target and mechanism of action need to be explored further.
Drugs, Chinese Herbal ; therapeutic use ; Humans ; Immunomodulation ; Sepsis ; drug therapy ; immunology

Objective:To produce rhBMP-4 with bioactivity in E.coli. Methods: The full-length human BMP-4 gene was mutated by PCR without changes in amino acid sequence, then the synthesized gene was cloned into plasmid pET-3c, transducted into BL21(DE)plysS, and induced by adding IPTG to a final concentration of 1.0 mmol/L. The protein product was purified using ion-exchange chromatography method and then renaturated, bioactivity was checked by C2C12 differentiation in vitro and mouse ectopic bone formation in vivo. Results: A 438 bp gene fragment encoding mature peptide of hBMP-4 was cloned , the protein product was mostly in the form of inclusion body, after renaturation, the engineering protein shows better bioactivity. Conclusion:The mutant strategy can enhance the expression of bioactive rhBMP-4 in E.coli expression system.

OBJECTIVETo summarize the histological and clinical characteristics of 40 cases with Burkitt's and Burkitt-like lymphoma in children, to evaluate the effects of treatment with international regimen, and to explore the treatment-related complications and prognostic factors.

METHODSForty patients with Burkitt's and Burkitt-like lymphoma were registered in Beijing Children Hospital from Feb 2003 to Apr 2006. The diagnosis was confirmed by histology and immunohistochemistry of biopsy, and clinical staging by the examination of imaging, cerebrospinal fluid and bone marrow based on St. Jude system. Intensive, short-term chemotherapy witch was modified from LMB89 protocol was given to the patients.

RESULTSOf the 40 patients, 30 were diagnosed as Burkitt's lymphoma (BL) and 10 as Burkitt-like lymphoma (BLL). Antibody against Epstein-Barr virus (EBV-Ab) was positive in 19 cases at diagnosis, only 7 of the patients were positive for EBER. Thirty-three of the cases were male and 7 female (M:F = 4.7:1); the median age was 6 years 9 months. The most frequently seen clinical characteristics were abdominal masses and surgical abdomen. Nine cases were at stage I - II and 31 cases at stage III - IV at diagnosis; CNS was involved in 4 cases and bone marrow in 2 cases. The courses of treatment were approximately 2 - 8 months. All the patients were followed up, the median follow-up period was 22.6 months. After chemotherapy, 35 patients (88.7%) were still alive during the one-year follow-up. The 3-year event-free survival (EFS) rate was 81.8%. Major toxicity was myelosuppression and mucositis. Stage III to IV of myelosuppression occurred in the most patients with unresected tumor and CNS-involvement. Of 5 patients who died, 2 died of infection, 2 died of lymphoma progression during chemotherapy, and 1 died of relapse.

CONCLUSIONBurkitt's and Burkitt-like lymphoma are the most common NHL in children with rapid clinical process. Outcome was greatly improved by current intensive, short-term chemotherapy regimen, the 3-year EFS was 81.8% including the patients who were in advanced stage. Childhood lymphoma with short clinical history, stage IV and residual disease after 3 months of therapy are associated with poor prognosis.

Adolescent ; Antineoplastic Combined Chemotherapy Protocols ; administration & dosage ; therapeutic use ; Burkitt Lymphoma ; drug therapy ; pathology ; Child ; Child, Preschool ; Female ; Humans ; Male ; Prognosis ; Treatment Outcome

A phytochemical investigation on the stems of Garcinia bracteata collected from Xishuangbanna resulted in the isolation of a new flavone. By analysis of the HRESIMS, IR, UV, 1D and 2D NMR spectra, the structure of the new compound was determined as 7-methoxy-4',6-dihydroxy-8-isobutyryl-flavone(1). Compound 1 was also tested for its anti-tobacco mosaic virus(TMV) activity. Results suggested the 1 possessed remarkable anti-TMV activity, with an inhibition rate of 28.2%.
Antiviral Agents ; chemistry ; isolation & purification ; pharmacology ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Flavones ; chemistry ; isolation & purification ; pharmacology ; Garcinia ; chemistry ; Magnetic Resonance Spectroscopy ; Plant Leaves ; chemistry ; Tobacco Mosaic Virus ; drug effects ; growth & development

Objective　To observe the changes of glucocorticoi d receptor (GR) in hepatic cytoplasm in rats after scalding-induced pathologic al stress and its regulation. Methods　The receptor binding capa city (R0) and the apparent dissociation constant (Kd) of GR in hepatic cytopla sm of normal, low-degree and heavy-degree scalded rats were measured with rad io-ligand binding assay, with ［3H］ dexamethasone as ligand. The changes of R0 and Kd of GR were regulated by injections of anti-rat TNFα, IL-1β a ntibodies, α-melanocyte-stimulating hormone (α-MSH), and KPV peptide( Ac- D-Lys-L-Pro-D-Val) respectively in vivo. Results　The R 0 of GR in hepatic cytoplasm in rats 12 h after heavy-degree scalding ［Mass action robust: （205.52±30.14） fmol/mg; Scatchard: （208.45±30.78） fmol/mg ］were significantly lower than that of control group ［Mass action robust:（307 .86±24.22） fmol/mg;Scatchard:（306.71±27.96） fmol/mg］(P<0.01), but no s ignificant difference was found in the R0 of GR between the control and the ra ts 12 h after low-degree scalding ［Mass action robust: （285.19±16.62） fmol/ mg ; Scatchard: （296.64±16.06） fmol/mg］. The injection of anti-rat TNFα, IL-1β antibodies, α-MSH and KVP all prevented the decline of R0 of GR in h epatic cytoplasm in rats with severe scalding. Conclusion　The injections of anti-rat TNFα, IL-1β antibodies, α-MSH or KPV can attenuate the reduction of GR in rat hepatic cytoplasm caused by severe scalding-induced pathological stress to some extent.

Objective To explore the value of Multi-detector CT in spinal cord angiography. Methods Ten patients with initial MR and clinical findings suggestive of spinal cord vessel disease were performed CT spinal cord angiography.Among these,7 patients were performed DSA later within 1 week, and 4 patients were therapy by operation.CT protocol:Toshiba Aquilion 64 slice CT scanner,0.5 mm thickness,0.5/r,120 kV,350 mA,choose aortic arch level as inspection position,and use"surestart" technique with CT threshold 180 HU.Contrast medium was Iohexol(370 mg I/ml),with injection velocity of 6 ml/s.The total volume was 80 ml.The CT spinal cord angiography images were analyzed according to disease model,disease range,feeding artery,fistula,draining veins,and were compared with DSA and operation results.Results All CT spinal cord angiography images displayed spinal vessel malformation. Among these,3 patients were inner-medullary arteriovenous malformation;2 patients were peri-medullary arteriovenous fistula;5 patients were spinal dural arteriovenous fistula.All cases showed disease range,and draining veins clearly,one patient had two vessels that were false positive,and all the other cases showed feeding arteries clearly,which were confirmed by DSA.Conclusion There are great values for CT spinal angiography in diagnosing spinal vessel disease,it can be a screening exam before DSA.

OBJECTIVETo observe the alterations of taurine transport, taurine transporter (TAUT) and cysteine sulfinate decarboxylase (CSD) mRNA in the calcification of myocardial cells in vitro.

METHODS3H-taurine measured the amount of taurine uptake. TAUT and CSD mRNA consents were measured using competitive quantitative RT-PCR in cultured and calcified myocardial cells.

RESULTSIn calcification of myocardial cells, taurine concentration was decreased by 27% (P < 0.05), taurine uptake was markedly reduced, Vmax reduced by 39% (P < 0.01), there were no statistical significance of Km values between the two groups. TAUT mRNA decreased by 45% (P < 0.01), but CSD mRNA increased by 25% (P < 0.05).

CONCLUSIONSThe data suggest that there were impediment of taurine transport in calcification of myocardial cells, as TAUT mRNA level was decreased, but CSD mRNA concentration was improved.

Animals ; Biological Transport ; Calcinosis ; metabolism ; pathology ; Calcium ; metabolism ; Carboxy-Lyases ; metabolism ; Cells, Cultured ; Myocytes, Cardiac ; metabolism ; pathology ; RNA, Messenger ; metabolism ; Rats ; Taurine ; biosynthesis ; genetics ; metabolism

The alterations of taurine transport and the expression of taurine transporter (TAUT) mRNA in myocardium and aortic wall were investigated in spontaneously hypertensive rats (SHR) and Wistar-Kyoto (WKY) rats. It was demonstrated that plasma taurine concentration and taurine release from myocardium and aortic wall in SHR were higher than those in WKY rats, whereas taurine content, taurine uptake and TAUT mRNA in myocardium and aortic wall of SHR were lower than those of WKY rats. In SHR, the maximal velocity (V(max)) of taurine transportation in myocardium and aortic wall was lower by 24% (P<0.05) and 35% (P<0.05) than that in WKY, their michaelis constants (Km) values were higher by 16% (P<0.05) and 39% (P<0.05), respectively. The results suggest that there is dysfunction of taurine transport in myocardium and aortic wall in SHR, which may be partly resulted from the decrease of TAUT activity and affinity, and down-regulation of TAUT gene expression.
Animals ; Blood Vessels ; metabolism ; physiopathology ; Carrier Proteins ; metabolism ; Heart ; physiopathology ; In Vitro Techniques ; Male ; Myocardium ; metabolism ; Rats ; Rats, Inbred SHR ; Rats, Inbred WKY ; Taurine ; metabolism

To explore the changes in adrenomedullin (ADM) and receptor activity-modifying protein 2 (RAMP2) mRNA in myocardium and vessels in hypertension, a hypertensive rat model was prepared by administering L-NNA. Contents of ADM in plasma, myocardium and vessels were measured by radioimmunoassay (RIA). The levels of pro-ADM mRNA of myocardium and vessels were determined by competitive quantitative RT-PCR. The results showed that L-NNA induced hypertension and cardiomegaly. The ratio of heart to body weight increased by 35.5% (P<0.01). In hypertensive rats the ir-ADM in plasma, myocardium and vessels was increased by 80%, 72% and 57% (P<0.01), respectively compared with the control. The amounts of ADM mRNA in myocardium and vessels were increased by 50% and 109.2% (P<0.05), respectively, and the amounts of RAMP2 mRNA was increased by 132% and 87% (P<0.01), respectively, compared with control. The levels of ADM in myocardium and vessels were positively correlated with RAMP2 mRNA, the correlation coefficients were 0.741 and 0.885 (P<0.01), respectively. The results obtained indicate that in hypertensive rats, ADM is elevated in plasma, myocardium and ves-myocardium and vessel, and ADM and RAMP2 mRNA are up-regulated in myocardium and vessel. The ADM/RAMP2 system may play an important role in the pathogenesis of hypertension.
Adrenomedullin ; metabolism ; Animals ; Cardiomegaly ; chemically induced ; metabolism ; Hypertension ; chemically induced ; metabolism ; Myocardium ; metabolism ; Nitroarginine ; pharmacology ; RNA, Messenger ; Rats ; Receptor Activity-Modifying Protein 2 ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Up-Regulation