AIM: The changes of myocardial nuclear membrane Ca 2+ -ATPase function was investigated in ischemia/reperfusion injury. METHODS: The model of myocardial ischemia/reperfusion injury was established in rats. Myocardial nuclei were purified with sucrose density centrifugation,the activity of Ca 2+ -ATPase was measured and calcium uptake was assayed with [ 45 Ca 2+ ] . RESULTS: Plasma levels of malondialdehyde (MDA) and free fatty acid (FFA) in myocardial ischemia/reperfusion injury increased significantly( P

Adult ; Cause of Death ; Humans ; Male ; Nitriles ; poisoning ; Poisoning ; mortality ; therapy ; Young Adult

Objective To study the relationship of concentraions of trace elements and the SOD, GSH-Ps activities in plasma following severe burn injury, and provide witness for clinical treatment of trace elements disorder in burned patients. Methods The plasma and urine from 67 severely burned patients in our hospital were collected on day 2, 4, 6, 8, 10, 15, 20, 30 after hospitalization. Trace element levels were determined by atomic absorption spectrophotometry. The vital force of SOD and GSH-Px were measured in plasma with the kits provided by Nanjing Jiancheng bioengineering research institute. Results The ion concentration of Cu in serum got higher and that of Zn got lower after burn, but that of Mn, Se was of no significance. The concentration of Cu, Zn, Mn, Se in urine were increased. The enzymatic activities of T-SOD and Cu, Zn-SOD as well as GSH-Px decreased from the early period to the metaphase. Conclusion For a great deal of oxygen free radicals released by tissues, SOD and GSH-Px were consumed and their concentration decreased in early stage after burn. Due to the trace elements released into blood by destroyed tissues and their increased excretion from urine, tissues could not generate adequate antioxidase, resulting in weak ability against inflammation and poor tissue repair. Our result provides a theoretical clue for the replenishment of trace elements for severely burned patients in early and middle stage and offer a clue to pathology and etiological treatment of burn.

AIM:To further study the anti-tumor effect of angiostatin, an anti-human angiostatin monoclonal antibody was prepared and identified.METHODS:The hybrodoma techniques were used. The BALB/C mice were immunized with angiostatin. The supernatant of cell culture were collected and screened by ELISA and double immunodiffusion.RESULTS: There cell lines which steadily secreted the anti-angiostatin monoclonal antibody were identified by ELISA and double immunodiffusion. The antibody was IgG1 and specifically recognized angiostatin without crossing reactions to rhIL-2, rhTNF-?, rhIFN-? and serum proteins.CONCLUSION: The antibodies secreted by three hybridoma cell lines identified by several methods were specific antibodies of angiostatin.

Objective To establish animal models in order to provide an experimental study basis for both the pathogenesis study and taking effective prevention scheme for doxorubicin extravasation injury. Methods A total of 20 Kunming mice for experiments on doxorubicin extravasation injury were divided in-to four groups, I.e., high dose group(2 g/L), medium dose group(1 g/L), low dose group(0.5 g/L) and the control group (injection with water). Dosages were administered with subcutaneous injection on both sides of mice abdomen. The adverse reaction of body, damage areas of extravasation injury, recovery period were observed and histopathologic slides of animal models on both 4 days and 11 days after experiment were performed and compared. Results No significant adverse body reaction was observed after injection for all groups. The damage areas due to extravasation injury were dosage and concentration dependent. In addi-tion, significant differences in recovery period were observed for mice in different groups, that is, the higher injection concentration and dose led to the longer recovery period. Results from the histopathologic study in-dicated that the putrescence of damage area was developed in high dose group mice, and the ulcer occurred after 4 d of dosage in medium dose group mice, respectively. In contrast, no ulcer was observed in low dose group mice. Conclusions It would be feasible to establish a prevention model for mice on doxorubicin extravasation injury by subcutaneous injection at a dosage of 0.05ml(1 g/L).

To explore the influence of matrix materials in complicate ingredients on traditional Chinese medicine and investigate the excipients selection model based on balanced release characteristics of multicomponents, the influence of HPMC (K4M, K15M, K100M) and Carbomer (934P, 971P, 974P) was illustrated by testing in vitro release of ginsenoside-Rg1, ginsenoside-Rb1 and notoginsenoside-R1 in Panax notoginseng saponins (model drug, PNS). According to in vitro release results of PNS matrix tablets in water and artificial intestinal juice, the release curves were analyzed with Peppas equation and simulating factor (f). Significant differences in k value and n value among ginsenoside-Rg1, ginsenoside-Rb1 and notoginsenoside-R1 existed in various formulations. The release behaviors from various excipients could be described with Non-Fickian transport or super Case II transport pattern. The f2 values for ginsenoside-Rg1, ginsenoside-Rb1 and notoginsenoside-R1 in 971P matrix tablet containing 30% Carbomer 971P were 74.91, 53.45, 57.89 in water and 79.35, 55.51, 51.89 in artificial intestinal juice, respectively. The release profiles fit for the regulation of FDA. The result revealed that the balanced release rates of Rg1, Rb1 and R1 in 971P matrix tablet were obtained.

Clinically guided by the holistic concept of traditional Chinese medicine and in combination with four diagnostic methods and pattern identification, quick and surround puncture is used for treating nodular goiter, fully displaying the practical application value of the special acupuncture therapy.

An adult patient with hypophosphatasia caused by compound heterozygous mutations in alkaline phosphatase,liver /bone /kidney(ALPL)gene was investigated through comprehensively reviewing the medical history and clinical records of the proband and her family members in order to better understand the disease.The proband and her older sister had mild decreased serum alkaline phosphatase level accompanied with frequently nontraumatic fractures at limbs and all the teeth fell off at the age of 20 and 7, respectively.Both of them carried a missense mutation c.407G>A(p.Arg136His)in exon 5 and a deletion mutation c.1318_1320delAAC(p.Asn440del)in exon 12 simultaneously.Other four family members were p.Arg136His mutation carriers and two members were p.Asn440del mutation carriers.We found that p.Asn440del mutation was associated with the oral disorders.In this family, compound heterozygous manifested more serious symptoms, while heterozygous showed relatively mild symptoms.In addition, it is necessary to differentiate it from primary osteoporosis and other diseases of disturbed bone mineralization.

OBJECTIVE:To establish a method for the simultaneous determination of acetic acid and succinic acid in Banxia syrup. METHODS:RP-HPLC was performed on the column of GL InterSustain-C18 with mobile phase of 0.03 mol/L ammonium di-hydrogen phosphate buffer solution(pH2.0)-methanol(gradient elution)at a flow rate of 0.8 ml/min,the detection wavelength was 210 nm,column temperature was 30 ℃,injection volume was 10 μl. RESULTS:The linear range was 0.020 98-0.209 8 μg/ml for acetic acid(0.999 9)and 12.04-120.4 μg/ml for succinic acid(r=0.999 9);limits of quantification were 0.15,18.24 ng,limits of detection were 0.045, 5.53 ng;RSDs of precision, stability and reproducibility tests were lower than 2%;recoveries were 97.45%-101.68%(RSD=1.39%,n=9) and 98.31%-101.08%(RSD=1.01%,n=9). CONCLUSIONS:The method is accurate and rapid,and suitable for the simultaneous determination of acetic acid and succinic acid in Banxia syrup.

Based on untermolecular splut G-quardruplex-hemun DNAzymes, a buosensor for detectuon of sulver uons and cysteune was developed wuth magnetuc nanopartucles ( MNPs ) as carruer to ummobuluze the DNA probes. Sunce Ag+ chelates guanune bases at the bundung sutes whuch are unvolved un G-quadruplex formatuon, the presence of Ag+ may unhubut G-quartets connected by Hoogsteen-type base paurung and dusrupt G-quadruplexes structures, whuch decreases the peroxudase actuvuty of G-quadruplex-hemun DNAzymes that effucuently catalyze H2 O2-meduated reactuons, such as the oxudatuon of ABTS ( 2, 2'-azunobus ( 3-ethylbenzothuozolune)-6-sulfonuc acud) by H2 O2 . Moreover, un the presence of L-cysteune, ut was used as a competutor by the strongly Ag-S to release Ag+ from G-ruch olugonucleotudes, promotung the reformatuon of G-quadruplexes and uncreasung the peroxudase actuvuty, whuch catalyzes the ABTS-H2 O2 reactuon system. In thus experument, the effucuent separatuon from real sample was achueved usung magnetuc nanopartucles as a solud phase carruer to effectuvely uncrease the detectuon sensutuvuty and decrease the background sugnal. Under the optumum condutuons, a hugh lunear relatuonshup between the UV absorbance and the Ag+ concentratuon was establushed un the range of 0. 5-100 nmol/L wuth a detectuon lumut of 0. 2 nmol/L. The calubratuon curve of cysteune was udentufued un the range from 0. 1 to 80 nmol/L and the detectuon lumut was as low as 0. 04 nmol/L.