OBJECTIVETo test the effects of autologous skeletal myoblast transplantation on the hemodynamics in dogs with coronary microembolization-induced chronic heart failure (CHF).

METHODSCHF models were successfully induced in 19 dogs and divided into ASMT group (n=9) and control group (n=10). The myoblasts were injected into the embolized region in the 9 dogs of the ASMT group, and saline was injected in the control dogs, and the hemodynamics of the dogs were evaluated 5 weeks after the injections.

RESULTCompared with saline injection, ASMT significantly increased dP/dtmax, MAP and LVSP (P<0.05) and decreased LVEDP (P<0.05) 5 weeks after myoblast transplantation. Desmin and Brd-U immunofluorescent staining showed myoblast survival at the injected sites in the dogs.

CONCLUSIONASMT provides mild improvements in the hemodynamics of dogs with CHF.

Animals ; Chronic Disease ; Dogs ; Female ; Heart Failure ; physiopathology ; therapy ; Hemodynamics ; Male ; Myoblasts, Skeletal ; transplantation ; Transplantation, Autologous

OBJECTIVESTo seek a better profiling of proteins of hepatoma cells.

METHODSThe homogenate of hepatoma cells QGY-7703 was fractionated into four parts by differential centrifugation: the nuclei, the pellet by 20,000 x g, the pellet by 100,000 x g and the cytosolic supernatant. The four fractions were submitted to two-dimensional gel electrophoresis and their electrophoretic patterns were analyzed.

RESULTSIn comparison with the protein pattern of hepatoma cells not fractionated, the patterns of the four fractions display many more protein spots, and a large number of proteins present in the nuclei and cytosolic supernatant were not shown in the not-fractionated samples.

CONCLUSIONPreparation of subcellular fractions before electrophoretic procedures proves to be very useful; not only can it improve the results of two-dimensional gel electrophoresis, but also can lead to research into the subcellular level.

Carcinoma, Hepatocellular ; chemistry ; pathology ; Electrophoresis, Gel, Two-Dimensional ; Humans ; Liver Neoplasms ; chemistry ; pathology ; Neoplasm Proteins ; analysis ; Proteome ; Tumor Cells, Cultured

To study the difference of changes on apoptosis, necrosis and respiratory burst of the polymorphonuclear neutrophils (PMN) in endotoxemia rat model. LPS (O(55)B(5), 5 mg/kg) was injected into abdominal cavity of 20 random normal Wistar rat. 2, 4, 8 and 12 hours after injection, the changes of apoptosis, necrosis and respiratory burst of the rats between PMN from the peripheral blood and from the bronchoalveolar lavage fluid were observed using the flow cytometer. At the same time, 5 uninjected rats were taken as control. The results demonstrated that the quantity proportions of apoptosis of PMN between the peripheral blood PMN and the bronchoalveolar lavage fluid PMN in rat's endotoxemia were similar. However, comparison with the uninjected LPS rat, the necrosis of peripheral blood PMN obviously increased and the respiratory burst capacity was clearly inhibited. Contrarily, the necrosis of bronchoalveolar lavage fluid PMN obviously decreased and the respiratory burst obviously increased in the injecting LPS rat. It was concluded that the necrosis and apoptosis displayed differently between the pulmonary and peripheral blood PMNs in endotoxemia. Under state of inflammation, the surviving PMN in tissue increased and kept the activated state due to tissue injury.
Animals ; Apoptosis ; Bronchoalveolar Lavage Fluid ; cytology ; Endotoxemia ; blood ; Necrosis ; Neutrophils ; physiology ; Pulmonary Alveoli ; pathology ; Rats ; Rats, Wistar ; Respiratory Burst

OBJECTIVETo investigate the role of monocarboxylate transporter 1 (MCT1) in enhancing the sensitivity of breast cancer cells to 3-bromopyruvate (3-BrPA).

METHODSThe inhibitory effect of 3-BrPA on the proliferation of breast cancer cells was assessed with MTT assay, and brominated propidium bromide single staining flow cytometry was used for detecting the cell apoptosis. An ELISA kit was used to detect the intracellular levels of hexokinase II, lactate dehydrogenase, lactate, and adenosine triphosphate, and Western blotting was performed to detect the expression of MCT1. MDA-MB-231 cells were transiently transfected with MCT1 cDNA for over-expressing MCT1, and the effect of 3-BrPA on the cell proliferation and adenosine triphosphate level was deteced.

RESULTS3-BrPA did not produce significant effects on the proliferation and apoptosis of MDA-MB-231 cells, and the cells treated with 200 µmol/L 3-BrPA for 24 h showed an inhibition rate and an apoptosis rate of only 8.72% and 7.8%, respectively. The same treatment, however, produced an inhibition rate and an apoptosis rate of 84.6% and 82.3% in MCF-7 cells, respectively. In MDA-MB-231 cells with MCT1 overexpression, 200 µmol/L 3-BrPA resulted in an inhibition rate of 72.44%, significantly higher than that in the control cells (P<0.05); treatment of the cells with 25, 50, 100, and 200 µmol/L 3-BrPA for 6 h resulted in intracellular adenosine triphosphate levels of 96.98%, 88.44%, 43.3% and 27.56% relative to the control level respectively.

CONCLUSIONMCT1 can enhance the sensitivity of breast cancer cells to 3-BrPA possibly by transporting 3-BrPA into cells to inhibit cell glycolysis.

OBJECTIVETo evaluate the efficacy of hepatitis B viruse (HBV) vaccination and its influencing factors among children in rural area of Jiangsu province.

METHODSTwenty-five hundred and twenty-two children born after 1998 in rural area were selected as the study population using multistage cluster sampling method. HBsAg and anti-HBs were detected by enzyme linked immunoassay (ELISA) and radio-immunoassay (RIA), respectively. Anti-HBs negative children were boosted using different hepatitis B vaccines and the efficacy was compared. Factors causing HBV infection in HBsAg positive children were also investigated.

RESULTSHBsAg positive rates in 1-7 year olds were 0.28%-1.28%, and the anti-HBs positive rates decreased from 76.7% to 45.5%. The HBsAg positive rate in children not timely vaccinated was significantly higher than those with HBV vaccine injection within 24 hours after birth (1.4% vs. 0.5%, P = 0.031). More than 90% of the anti-HBs negative children had protective level of anti-HBs after boosted with HBV vaccine.

CONCLUSIONHBsAg positive rate in children born after 1998 in rural area of Jiangsu province decreased significantly, with an average of 0.8%. The reason for HBsAg carriage in children might be attributed to mother-to-infant transmission or not timely HBV vaccination.

Adult ; Child ; Child, Preschool ; China ; epidemiology ; Female ; Hepatitis B ; epidemiology ; immunology ; prevention & control ; transmission ; Hepatitis B Surface Antigens ; blood ; Hepatitis B Vaccines ; administration & dosage ; immunology ; Humans ; Infant ; Infectious Disease Transmission, Vertical ; Pregnancy ; Rural Population

BACKGROUNDPolymorphonuclear neutrophil (PMN), one of the most important inflammatory cells, functions throughout the initiation, progression and resolution of inflammation. This study aimed at investigating the relationship between PMN apoptosis and the lung injury after chest impact trauma.

METHODSPMNs were purified from rabbits subjected to the chest impact trauma and their apoptosis, necrosis, survival and respiratory burst were detected by flow cytometry. Meanwhile, lactate dehydrogenase and (LDH) [Ca2+]i were measured.

RESULTSThe delayed apoptosis of PMNs in bronchoalveolar lavage fluid was observed from 2 hours to 12 hours after trauma, and viable cells increased. Respiratory burst of PMNs in bronchoalveolar lavage fluid was increased significantly from 2 hours with the peak at 8 hours. Meanwhile, lactate dehydrogenase in bronchoalveolar lavage fluid was higher than that in control (P < 0.05) from 4 hours to 24 hours, and intracellular free Ca2+ in PMN was increased temporarily.

CONCLUSIONSRetention of PMN in tissues and the abnormality in apoptotic pathway inevitably generate persistent activation of PMN and excessive release of toxic substances, resulting in tissue injury. The temporary increase of intracellular free Ca2+ may be responsible for the delayed apoptosis of PMN.

Animals ; Apoptosis ; physiology ; Lung Injury ; Neutrophils ; physiology ; Rabbits ; Respiratory Burst ; physiology ; Thoracic Injuries ; complications

The effects of human insulin 70/30 and insulin lispro 75/25 were compared in improving postprandial blood glucose excursions in 106 patients with type 1 or 2 diabetes in a one-month,open-labelled,self- controlled trial .The results showed that treatment of diabetic patients with insulin lispro 75/25 significantly improved 2 h postprandial blood glucose excursion compared to pre-study with human insulin 70/30 (baseline) without any significant adverse events or sustained hypoglycemic episodes.These physiological benefits were associated with a patient preference for insulin lispro 75/25.

Syndrome is the basis and essence of the treatment according to syndrome differentiation theory in traditional Chinese medicine(TCM), which comprehensively summarizes the overall reaction state of the organism under the influence of internal and external factors, and has subjective and qualitative characteristics. But the test indexes of modern medicine for diagnosing diseases have the objective and quantitative characteristics. The subjective and qualitative TCM syndromes can be quantitatively treated and combined with the objective and quantitative modern test indexes, this method provides a new idea for the modernization of syndrome differentiation system of TCM. In this paper, the prehypertension with syndrome of upper hyperactivity of liver Yang was taken as an example, a syndrome discriminant model was set up by using the technique of scale and metabonomics, and the feasibility of establishing macro-micro syndrome differentiation system of TCM was also discussed. This paper has important guiding significance for realizing the objectification of diagnosis of TCM syndrome and the standardization of the treatment according to syndrome differentiation theory of TCM.

Traditional Chinese herbs are readily contaminated by mold that produced mycotoxins which are closly related to the herbs' external factors and external environments during the storage process. In this study, Citri Reticulatae Pericarpium was used as example, and the characteristics of traits, water content, active components (naringin, hesperidin, sinensetin, naringin, tangeretin) and the accumulation of aflatoxins (AFs) were selected as the evaluation indexes. Citri Reticulatae Pericarpium was stored under different environments and packaging materials for 12 months, and then the quality changes and mildew of Citri Reticulatae Pericarpium were examined. The results showed that the color of Citri Reticulatae Pericarpium was deepened after storage, but without mildew phenomenon. Besides, the sample storage in kraft paper and woven bags had varying degrees of moth phenomenon after 12 months storage, and the water content exceeded the limit of Chinese Pharmacopoeia. In addition, the contents of the five active constituents obviously decreased, especially for hesperidin, which did not meet the pharmacopoeia standard after storage. AFs were not detected in any of the tested samples. According to the results, we conclude that low temperature and humidity environment is more suitable for the storage of Citri Reticulatae Pericarpium, and that packaging materials should be further investigated. This study is of great significance for preventing the mold to contaminate the traditional Chinese medicine and ensuring the quality, effectiveness and safety of TCMs.

Aim To evaluate the protective effect of Averrhoa Carambola L. Roots DMDD alleviating myocardial injury in diabetes mellitus (DM) mice and its mechanism. Methods SD mice were given high-glucose-high-fat diet combined with streptozotocin to induce DM model, and were administered with DMDD. The fasting blood glucose (FBG) was recorded. The left ventricular end-diastolic pressure (LVEDP), left ventricular systolic pressure (LVSP), maximum upstroke velocity of left ventricular pressure (+ dp/dt