Acute Disease ; Adult ; Anemia ; chemically induced ; Benzene ; poisoning ; Humans ; Male ; Nitro Compounds ; poisoning

Objective To summarize the epidemiological feature of plague cases oceuwed in China.Methods The epidemiological and clinical data from 1981 to 2006 year in China were analyzed with descriptive study method.Result Nine hundred and seveneteen human plague cases were diagnosed in 9 provinces(regions) from 1981 to 2006 years,105 cases died,the mortality rate being 11.45%,and they distributed in 69 counties (cities or banners).In Qinghai Province 108 cases were diagnosed,the mortality rate was 46.30%(50/108),the cases distributed in 17 counties(cities);137 cans in Guizhou,distributing in 2 counties(cities);517 cases in Yunnan,distributing in 26 counties(cities).Plague cases peaked separately in 1983,1990,1996 and 2000 years,they were 25,75,98 and 254 separately.The principal spreading ways were breathing flying particles,touching,skinning and eating marmot in Qinghai;750 cases were of bubonic plague,among whom 4 cases in Tibet died,the fatality rate was 0.53(4/750);121 cases were of pneumonic prague,among whom 65 cases died,was accounting for 53.72%(65/121);31 cases were of septieaemic plague,and 30 cases died(one cases was cured in Inner Mongolia),accounting for 96.77%(30/31).Others were brain plague,intestinal plague,tonsil plague and plague cellulites,which were cured.Conclusion From 1990,human plague epidemical scope and intensity is enlarging continuously compared with 1980-1990 and there is a trend of going up gradually in China.

OBJECTIVETo observe the effect of Bushen Wenyang Huayu Recipe (BWHR) on hypoxia inducible factor-1α (HIF-1α), proline hydroxylase2 (PHD2), von Hippel Lindau disease (VHL) suppressor gene expressions in endometriosis (EM) rats with Shen yang deficiency blood stasis syndrome (SYDBSS), and to explore the pathogenesis of EM and the mechanism of BWHR for treating EM.

METHODSTotally 50 SD rats were randomly divided into five groups, i.e., the blank control group, the sham-operation group, the model group, the Chinese medicine (CM) group, and the Western medicine (WM) group, 10 in each group. Rats in the blank control group and the sham-operation group were fed routinely. Rats in the rest 3 groups received 30-day "extended refrigerator freezing and ice water immersion" and combined with " autotransplantation" to establish EM rat model with SYDBSS. One Milliliter BWHR at 3.33 g/mL was administered to rats in the CM group by gastrogavage. Gestrinone at the daily dose of 0. 5 mg/kg was administered to rats in the WM group by gastrogavage. Equal volume of normal saline was administered to rats in the model group, the blank control group, and the sham-operation group. The size and morphology of ectopic foci in rats were observed after 4 weeks of medication. Expressions of serum CA125, plasma cyclic adenosine monophosphate (cAMP), and plasma cyclic guanosine monophosphate (cGMP) were detected by radioimmunoassay. Morphological changes of eutopic endometrium and ectopic tissue were observed under the optical microscope by HE staining. Protein expressions and contents of HIF-lα, PHD2, and VHL were detected by immunohistochemical SABC method and Western blot. mRNA expressions of HIF-1α, PHD2, and VHL were detected by RT-PCR.

RESULTSThe ectopic foci grew significantly in the model group. Their volumes were obviously contracted after treated by CM and WM. Compared with the blank control group and the sham-operation group, serum CA125 and plasma cGMP obviously increased, cAMP obviously decreased (P < 0.05); expressions and contents of HIF-1α mRNA and protein all decreased (P < 0.05); mRNA and protein expressions and contents of PHD2 and VHL all decreased in the model group (P < 0.05). Compared with model group, levels of CA125 and cGMP obviously decreased; cAMP levels obviously increased, expressions and contents of HIF-1α mRNA and protein all increased, mRNA and protein expressions and contents of PHD2 and VHL all increased in the WM group and the CM group (P < 0.05). Compared with the CM group, PHD2 protein contents were higher in the WM group (P < 0.05). HIF-1α was negatively correlated with PHD2 (r = -0.799, P = 0.00). HIF-1α was negatively correlated with VHL (r = -0. 625, P = 0.003).

CONCLUSIONSBWHR could effectively treat EM. Its mechanism might be associated with reducing contents of HIF-1α, serum CA125, and plasma cGMP, and up-regulating expressions of PHD2, VHL, and cAMP.

Animals ; Cyclic AMP ; Drugs, Chinese Herbal ; therapeutic use ; Endometriosis ; drug therapy ; metabolism ; Female ; Hypoxia-Inducible Factor 1, alpha Subunit ; metabolism ; Proline ; metabolism ; RNA, Messenger ; Rats ; Rats, Sprague-Dawley ; Up-Regulation ; Yang Deficiency ; drug therapy ; metabolism

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

Objective To explore the effect of different proportions of mixed blood exchange transfusion on blood circulation in neonates with hemolytic disease.Methods Thirty-one newborn infants with hemolytic disease were treated by peripheral arteriovenous synchronization of exchange transfusion with different proportions mixed blood.AB type plasma was mixed with O type red blood cell(RBC) washing.The proportion for the treatment group was 1:1(the O type RBCs 2 U:the AB type plasma 200 mL),by exchange transfusion of haplotypes,in accordance with 80?mL/kg;the proportion for control group was 2:1(the O type RBC 4 U:the AB type plasma 200 mL),by exchange transfusion of double in accordance with 150-180 mL/kg.The indicators were detected,such as the exchange rate of neonatal serum bilirubin,RBC,hemoglobin(Hb),hematocrit(HCT),and the exchange transfusion quantity and days of hospitalization before and after the exchange transfusion were analyzed.Results The exchange rate of serum bilirubin of treatment group and control group was (44.92?3.99)% and (45.69?5.06)%,respectively,there was no significant difference between 2 groups(P=0.639),there was no significant difference of hospitalization days[(8.13?1.13) d vs(8.19?0.91) d]between 2 groups(P=0.884).After exchange transfusion in treatment group,the average level of the RBC,Hb and HCT were increased(P

BACKGROUNDMany studies have indicated that hyperpolarizing cardioplegia is responsible for myocardial preservation and researchers have suggested that the adenosine triphosphate-sensitive potassium channels (K(ATP)) were the end effectors of cardio-protection. But whether mitochondrial K(ATP) plays an important role in hyperpolarizing cardioplegia is not apparent. The present study investigated the effect of hyperpolarizing cardioplegia containing pinacidil (a nonselective K(ATP) opener) on ischemia/reperfusion injury in rat hearts, especially the role of mitochondrial K(ATP) in pinacidil hyperpolarizing cardioplegia.

METHODSSprague-Dawley rat hearts were Langendorff-perfused for 20 minutes with Krebs-Henseleit buffer at 37°C before equilibration. Cardiac arrest was then induced in different treatments: there was no arrest and ischemia in the normal group, the control group were arrested by clamping the aorta, depolarizing caidioplegia (St. Thomas solution containing 16 mmol/L KCl) and hyperpolarizing cardioplegia groups used St. Thomas solution containing 0.05 mmol/L pinacidil and 5 mmol/L KCl to induce cardiac arrest in group hyperkalemic and group pinacidil, in group hyperkalemic + 5-hydroxydecanote (5HD) and Pinacidil + 5HD, 5HD (0.1 mmol/L) was added to the above two solutions to block mitochondria K(ATP) channels. Global ischemia was then administrated for 40 minutes at 37°C, followed by 30 minutes of reperfusion. At the end of equilibration and reperfusion, hemodynamics, ultrastructure, and mitochondrial function were measured.

RESULTSIn the control group, ischemia/reperfusion decreased the left ventricular developed pressure, heart rate, coronary flow, mitochondrial membrane potential, impaired mitochondrial respiratory function, increased reactive oxygen species and left ventricular end diastolic pressure. Damage to myocardial ultrastructure was also evident. Both depolarized arrest and especially hyperpolarized cardioplegia significantly reduced these lesions. 5HD partially blocked the beneficial effects of pinacidil cardioplegia but showing no effects on hyperkalemic arrest.

CONCLUSIONSPinacidil cardioplegia provides better cardioprotection with preservation of hemodynamics, ultrastructure, and mitochondrial function than traditional cardioplegia. The mitochondria K(ATP) channels may play an important role in the protection mechanism.

Animals ; Hemodynamics ; drug effects ; Membrane Potential, Mitochondrial ; drug effects ; Microscopy, Electron, Transmission ; Myocardial Reperfusion Injury ; drug therapy ; metabolism ; Myocardium ; metabolism ; ultrastructure ; Pinacidil ; therapeutic use ; Potassium Channels ; metabolism ; Rats ; Rats, Sprague-Dawley ; Reactive Oxygen Species ; metabolism

Objective To observe the effects of cell cycle inhibitor on astrocytic proliferation and scar formation and to study neuronal apoptosis after focal cerebral ischemia in rats.Methods Ischemic model was established by photochemistry method.T_2-weighted MRI was performed on the 3rd, 7th, and 30th day after focal cerebral ischemia.The expression of glial fibrillary acidic protein(GFAP)and apoptosis was observed by immunofluorescence.The protein levels of GFAP and proliferation cell nuclear antigen (PCNA), CyelinA and CyclinB1 were measured by Western blotting from the ischemic and sham animals finished on the 3rd, 7th, and 30th day.Results A marked and significant reduction of brain infarction volume was found in Olomoucine-treated ischemic animals(2.27%?0.28% , 1.87%?0.19%, 1.08%? 0.18%)as compared with controls(5.10%?0.35%, 4.60%?0.26%, 3.96%?0.28%, P

Abstract: Objective　To analyze the clinical characteristics and changes of serum IgG, IgM antibodies in patients infected with the SARS-CoV-2 B.1.1.529 (Omicron) variant. Methods　The clinical data of 82 patients with SARS-CoV-2 B.1.1.529 variant was analyzed retrospectively. Based on the presence of pneumonia on chest CT, the patients were divided into pneumonia group and non-pneumonia group. Serum IgG, IgM antibodies were observed at 5 time points T1 (1~<4 d), T2 (4~<8 d), T3 (8~<15 d), T4 (15~<22 d) and T5 (22~<30 d) after admission. Results　Among the 82 patients infected with the SARS-CoV-2 B.1.1.529 variant strain, there were 62 cases of cough, 31 cases of fever, 33 cases of throat discomfort, 5 cases of muscle soreness and 3 cases of diarrhea. The serum IgG antibody levels at 5 time points were 50.22 (142.20) AU/mL, 326.50 (220.63) AU/mL, 368.23 (76.21) AU/mL, 368.65 (79) AU/mL, and 385.26 (113.10) AU/mL, respectively. The level of serum IgG antibody in the pneumonia group was lower than that of the non-pneumonia group at T1 and T4 time points, and the differences were statistically significant (P<0.05) , the positive rate of serum IgG antibody in the pneumonia group was lower than that of the non-pneumonia group at the T1 time point, and the difference was statistically significant (P<0.05) . The serum IgM antibody levels at 5 time points were 0.41 (0.81) AU/mL, 0.95 (1.62) AU/mL, 1.09 (2.42) AU/mL, 0.74 (3) AU/mL, and 0.81 (3.10) AU/mL respectively, and there was no significant difference between the two groups. Conclusion　The clinical symptoms of patients infected with the SARS-CoV-2 B.1.1.529 variant strain are mild. Serum IgG antibodies increased after infection, but there are some differences between the pneumonia group and the non-pneumonia group, whether serum IgG has a protective effect needs further research; the serum IgM antibodies do not increase highly after infection, there are some differences between individuals.

This study was purposed to investigate the effects of thalidomide on proliferation of peripheral blood mononuclear cells (PBMNCs), levels of lymphocyte subsets, secretion of cytokines and its killing activity, and to elucidate the immunoregulation mechanisms in treatment of multiple myeloma with thalidomide. The method of MTT was used to detect the effects of thalidomide on the proliferations and the cytotoxic activity of PBMNC; the flow cytometer was used to analyze the lymphocyte subsets; the ELISA was used to measure the concentrations of cytokines in culture supernatants. The results showed that thalidomide enhanced the proliferations of the CD8+ T, NK cells in PHA-stimulated PBMNC from healthy volunteers, increased the secretion of IL-6 significantly, and decreased the secretion of IFN-gamma, and the secretions of IL-2 and IL-10 were not affected. Compared with control group, at the same ratio of effectors to targets the thalidomide (5 microg/ml) could enhance the cytotoxic activity of PBMNC (P < 0.01), the cytotoxic activity was maximal when the ratio of effectors to targets was 40:1. It is concluded that thalidomide preferentially enhances the proliferations of CD8+ T, NK cells in PHA-stimulated PBMNC from healthy volunteers, and enhances the cytotoxic activity of PBMNC by increasing the secretion of IL-6 significantly, in short, thalidomide can exert anti-myeloma effects by increasing cellular immune function.
Adjuvants, Immunologic ; pharmacology ; Adult ; CD8-Positive T-Lymphocytes ; cytology ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Cytokines ; biosynthesis ; Female ; Humans ; Immunity, Cellular ; drug effects ; Killer Cells, Natural ; cytology ; immunology ; Leukocytes, Mononuclear ; cytology ; drug effects ; immunology ; Lymphocyte Subsets ; drug effects ; immunology ; Male ; Middle Aged ; Multiple Myeloma ; pathology ; T-Lymphocytes, Cytotoxic ; drug effects ; Thalidomide ; pharmacology ; Tumor Cells, Cultured

OBJECTIVETo detect the effect of erigeron breviscapus on the expression of vascular endothelial growth factor (VEGF) in the periodontal tissues during orthodontic tooth movement.

METHODS45 rabbits were divided into 3 groups (groups A, B and C). Groups A and B included experimental group of 1, 3, 7 and 14 days respectively. The mandibular first molar of each experimental rabbit was observed. The rabbits of group A and group B received iontophoresis with erigeron breviscapus into the right (group A-R and group B-R) and with normal sodium into the left as the control (group A-L and group B-L). Additionally, the rabbits of group B were designed orthodontic appliance, by which 0.78 N mesial force was applied to pull the mandibular first molars. Group C, group of 0 day, was no iontophoresis and orthodontic appliance as the control. After killed on schedule, the amount of experimental tooth movement was measured and the expression of VEGF was examined by immunohistochemical method.

RESULTSThe amount of experimental tooth movement increased successively from 1 to 14 days. The differences among days 3, 7 and 14 were significant in the comparison between group B-R and group B -L (P < 0.01). The expression of VEGF in groups A-R and B-L enhanced apparently compared with that in groups C and A-L (P < 0.01), but that in group B-R was the most apparent (P < 0.01). The expression of VEGF reached the peak level on day 3 in groups A-R and B-R (P < 0.01), but it reached the peak level on day 7 in group B-L (P < 0.01).

CONCLUSIONErigeron breviscapus by iontophoresis can accelerate orthodontic tooth movement, and can meanwhile up-regulate the expression of VEGF in periodontium in the earlier period of orthodontic tooth movement. Thus it can be presumed that one of its mechanisms for erigeron breviscapus to accelerate orthodontic tooth movement is erigeron breviscapus effects the metabolism and differentiation of osteoblast and osteoclast through up-regulating the expression of VEGF in periodontium.

Animals ; Cell Differentiation ; Erigeron ; Molar ; Orthodontic Appliances ; Osteoblasts ; Osteoclasts ; Periodontal Ligament ; Periodontium ; Rabbits ; Stress, Mechanical ; Tooth Movement Techniques ; Vascular Endothelial Growth Factor A