Acrylamide ; analysis ; Air Pollutants, Occupational ; analysis ; Chromatography, High Pressure Liquid ; methods ; Workplace

Chromatography, Gas ; methods ; Dimethoate ; blood ; Humans ; Insecticides ; blood ; Methyl Parathion ; blood

Benzene ; analysis ; Chemical Industry ; Chromatography, Gas ; methods ; Humans ; Occupational Exposure ; analysis ; Toluene ; analysis ; Trichloroethylene ; analysis ; Xylenes ; analysis

OBJECTIVETo study the effect of 1-tetrahydropalmatine (1-THP) on the spontaneous electric discharge (SED) induced by chronic dorsal root ganglion neurons compression.

METHODSUsing single fiber recording method, the SED of 84 neurons class A induced by compression were recorded. The effect of 1-THP on the SEDs and its relation with concentration were observed.

RESULTSIn the 84 SED of neurons, 25 showed periodical rhythmicity (PR) and 59 showed non-periodic rhythmicity (non-PR). 1-THP (100 micromol/L) inhibited SED in 16.0% (4/25) of neurons with PR and 67.8% (40/59) of neurons with non-PR (P < 0.01) in an effect-dose dependent manner, the higher the concentration of 1-THP, the more the inhibition, with quicker inhibiting in initiation and longer time needed for recovery. SED in 57.1% neurons were recovered 20 min after elution, but unrecovered even after 3 h in the others.

CONCLUSION1-THP shows inhibitory effect on the A-fiber SED induced by chronic dorsal root ganglion neurons compression.

Action Potentials ; drug effects ; Animals ; Berberine Alkaloids ; pharmacology ; Ganglia, Spinal ; drug effects ; injuries ; physiology ; Male ; Neurons ; drug effects ; physiology ; Rats ; Rats, Sprague-Dawley

Dioscin chemical compositions are the main effective components in clinical commonly used Chinese medicines such as Diaoxinxuekang capsules and Xinnaoshutong capsules etc , which show distinct curative effect on cardiovascular and cerebrovascular diseases.Meanwhile, they are the important raw materials for the synthesis of steroid hormone drugs .The studies on the extraction technology exhibit important significance in the exploration of pharmacological activities of the components , which also are the external requirements for the growing demand of steroid hormone drugs market .In this paper , the relatively mature extraction methods re-searched in recent years were summarized ,and the advantages and disadvantages of the different processes were discussed in order to provide reference for the further studies and application .

BACKGROUND:The anti-inflammation and protective effects of lipoxin have been verified in several immunity-related disease models. Preliminary studies of our research group have shown that, lipoxin receptor agonist BML-111 has negative regulation effects on the human cytomegalovirus (HCMV)-induced immunological injury. However, the effect of BML-111 on the HCMV replication remains unclear.
OBJECTIVE:To observe the influence of lipoxin receptor agonist BML-111 on HCMV replication and proliferation in THP-1 macrophages and human embryonic lung fibroblasts.
METHODS:THP-1 macrophages were infected by HCMV AD169 strain, and were divided into three groups:mock infection, HCMV infection, HCMV+BML-111. The final concentration of BML-111 was 100 nmol/L. cells in each group were col ected at 0, 1, 2, 4, 12, 36, 48 hours, the mRNA levels of IE86 and pp65 in the THP-1 macrophages were tested by RT-PCR method. Human embryonic lung fibroblasts were infected with HCMV (MOI=0.1), and were divided into two groups:HCMV infection and HCMV+BML-111. The patho-morphous changes of human embryonic lung fibroblasts were observed under light microscope, and the cellnumber was measured. The infective virus titer changes in human embryonic lung fibroblasts were examined by plaque assay.
RESULTS AND CONCLUSION:After the macrophages were infected by HCMV, compared with the mock infection group, the mRNA levels of IE86 and pp65 in the HCMV group and HCMV+BML-111 group were increased significantly;compared with the HCMV infection group, the mRNA levels of IE86 and pp65 in the HCMV+BML-111 group were increased significantly in the early stage (within 4 hours) after infection, but the pp65 mRNA levels were decreased significantly in the medium and late stages (24-72 hours) after infection. After human embryonic lung fibroblasts were infected by HCMV, the degree of the patho-morphous in the HCMV+BML-111 group reached 100%2 days earlier than the of HCMV infection group. The infective virus titer reached the peak 2 days earlier than the HCMV infection group, but no significant difference was found between the two groups. BML-111 accelerates the replication of HCMV in the early stage of infection, but inhibits the expression of pp65 gene in the late stage. BML-111 has no impact on the proliferation of the infective HCMV titer in vitro.

OBJECTIVETo investigate the mechanism that the formulas for activating blood and resolving stasis can regulate hemopoietic stem cell to produce new blood.

METHODRats were established animal model of acute cerebral infarction by referencing Olivette' method. They were randomly divided into model group, the group of the high, middle, low dose of the formulas for activating blood and resolving stasis. Each group and then wasrandomly divided into subgroups by 1, 3, 7, 14, 28 d. Xuesaitong capsule was formulated into 20, 40, 60 g x L(-1) with normal saline. The rats were given gavage drugs once a day until the experient ended, and the model group was administrated by intragastrical perfusion of normal saline. ELISA was used to detect the expression of SCF in peripheral blood and bone marrow among different groups at different time points. Flow cytometry was used to observe the changes of CD117 in blood and bone marrow.

RESULTThe CD117+ HSC and SCF concentration in peripheral blood and bone marrow of model group were increasing during 1-14 d,there was a peak on the 14th day, then the expression was reducing. CD117+ HSC and SCF concentration rising trend in the group of the high, middle dose of the formulas for activating blood and resolving stasis was preceded model group (P < 0.05).

CONCLUSIONActivating blood and resolving stasis can regulate hemopoietic stem cell to produce new blood, and it is through the regulation of CD117+ HSC number to achieve the purpose.

Animals ; Bone Marrow Cells ; drug effects ; metabolism ; Capsules ; Cerebral Infarction ; blood ; drug therapy ; genetics ; metabolism ; Chemistry, Pharmaceutical ; Drugs, Chinese Herbal ; administration & dosage ; Hematopoietic Stem Cells ; drug effects ; metabolism ; Humans ; Male ; Proto-Oncogene Proteins c-kit ; genetics ; metabolism ; Rats ; Rats, Sprague-Dawley ; Stem Cell Factor ; genetics ; metabolism

Objective To observe the expression of peroxisome proliferator-activated receptor γ (PPARγ) in hippocampus neurons in rats after different time of neuron oxygen deprivation/oxygen supply, and to investigate the role of PPARγ in neuron ischemia reperfusion injury.Methods One day old newborn SD rats were chosen. Primary cultured hippocampus neurons were used to establish neuron ischemic reperfusion model in vitro by oxygen and glucose depriving 15 minutes and supplying again, and then the neuron structure was observed by transmission electron microscope of JEM-200EX.The expression of PPARγ mRNA and protein were detected by RT-PCR and Western blot, respectively.Results Neuron structure was damaged after neuron oxygen deprivation/oxygen supply. There was no significant difference between 0 h oxygen supply group and the control group.The expression of PPARγ was decreased both at mRNA and protein level after 6 h of oxygen supply. The difference between 6 h oxygen supply group and the control group was significant(P<0.01), which decreased with the length of reperfusion and the lowest was at 48 h after the reperfusion. The difference among the different reperfusion groups and the control group was significant(P<0.01). Conclusion PPARγ may participate in the pathological damage course of neuron ischemical reperfusion injury, and may become a new intervention target of treatment for ischemic cerebrovascular disease.

Objective To investigate the short-term outcome of laparoscopic adjustable gastric banding (LAGB) for morbid obesity complicated with type 2 diabetes. Methods Eight morbidly obese patients with type 2 diabetes underwent LAGB from October 2006 to August 2007. The weight parameters, fasting (FBG) and 2-hour blood glucose (2hBG), medication for diabetes were assessed 1,3, 6 and 9 months after surgery. Results All of the patients lost weight, with a mean body mass index decreased from (38.7±7.5) kg/m2 before LAGB to (30.5±4.3) kg/m2 9 months after LAGB. The FBG and 2hBG were decreased significantly at month 6 and 9 after LAGB, with normal FBG and 2hBG in 4 patients. At month 9 after LAGB, 3 of 5 patients with insulin treatment before LAGB were changed to oral hypoglycemics, 1 was continuously administered with a reduced dose of insulin, and 4 patients stopped any medication. Conclusion LAGB is an effective procedure in the treatment of morbid obesity complicated with type 2 diabetes with a favorable short-term outcome.

Integrative Medicine ; education