Objective To investigate the effect of naloxone on neuronal cells apoptosis induced by repeated febrile seizures(FS).Methods Warm water was used to induce 70 rats FS model 15 days after birth in this study; each rat was induced 7 times febrile seizures at one- day interval . Seventy rats were randomly divided into naloxone-treated group and FS control group, receiving injection of naloxone or saline at 5, 30, 60 min and 2 hours after FS each day respectively. The rats were sacrificed 24 hours after the last seizure. Neuronal cell apoptosis was determined by TUNEL methods in situ cell death kit. TUNEL positive cells(TPC) were stained and counted as apoptosis in hippocampus and cortex. Ultrastructural changes of apoptosis neurons were observed under the electron microscope(EM). Results Compared with the FS control group, naloxone treatment could significantly relieve neuron apoptosis induced by repeated FS when it was used at 5, 30, 60 min after the last FS. However there was no significant difference in neuron apoptosis between 2 groups when naloxone was used at 2 hours after FS. The comparison of different naloxone administration time showed that the earlier naloxone was injected,the fewer apoptosis neurons were induced by FS.Conclusion Naloxone,as early used in proper dosage,may significantly alleviate apoptosis after repeated FS ,and protect neurons.

This study is designed to obtain recombinant human acetylcholinesterase (rhAChE) and apply it in screening acetylcholinesterase inhibitors. The rhAChE was overexpressed in HEK293 cells transfected by plasmid of pCMV-AChE with the cationic liposome and rhAChE was found to be secreted into cell culture medium. AChE activity was assayed according to modified Ellman method to obtain kinetic parameters. IC so50 values for donepezil compounds of rhAChE were calculated to determine their activities of inhibition. The results showed that Km value was 151.9 micromol.L-1 donepezil inhibited rhAChE in a mixed competitive-noncompetitive way (Ki= 16.03 nmol.L-1, Ki = 18.36 nmol.L-1) and that most new compounds tested exhibited high activities of inhibition on rhAChE. The study suggests that rhAChE is available to be applied in screening AChE inhibitors in vitro.
Acetylcholinesterase ; genetics ; metabolism ; Cholinesterase Inhibitors ; analysis ; pharmacology ; HEK293 Cells ; Humans ; Indans ; analysis ; pharmacology ; Inhibitory Concentration 50 ; Kinetics ; Piperidines ; analysis ; pharmacology ; Plasmids ; Recombinant Proteins ; genetics ; metabolism ; Transfection

0.05).Compared with control group,significant decrease in positive group was found in the interval from first evacuation of HM to resolution of serum ?-hCG level,(83?18) days versus(126?31)days(P0.05).Conclusions Once HM is diagnosed,evacuation should be performed as soon as possible,the later the evacuation begins,the higher the risks of lung metastasis and chemotherapy are.It is not necessary to worry about lung metastasis before evacuation of HM,the outcome of post- chemotherapy is very good.

Ethanol can be produced from lignocellulose by first hydrolysing the material to sugars,including hexose,and pentose,and then fermenting the hydrolysate to ethanol.Hydrolysis using dilute-acid has advantages over other methods.However,compounds which inhibit fermentation are generated during this kind of hydrolysis.Therefore,it is important to focus on microorganisms metabolizing xylose and tolerating/decomposing inhibitors,on detoxification methods of hydroly- sates with low-cost and facilitated to scale-up,and different fermentation modes in ethanol production from hydrolysate.This review summarized the advance in above aspects.

The crude toxin was extracted from hypha and culture solution of Phyllosticta commelimecola through three different polarity solvent: benzinum, puncificatum ethyl acetate and chloroform. The result indicated that the toxin secreted by Phyllosticta commelimecola not only was in hypha but also in culture solution and the extracting effect of ethyl acetate was the best. The soybean median and PSK media can be respectively used as solid and liquid culture media to produce toxin and grow mycelium. The optimal cultural conditions for producing toxin were temperature 32℃,cultured period 14d, cultured ways shaking of 150r/min.

The stromal interaction molecule (STIM)?calcium release?activated calcium channel protein (ORAI) and inositol 1,4,5?trisphosphate receptors (IP3Rs) play pivotal roles in the modulation of Ca2+?regulated pathways from gene transcription to cell apoptosis by driving calcium?dependent signaling processes. Increasing evidence has implicated the dysregulation of STIM–ORAI and IP3Rs in tumorigenesis and tumor progression. By controlling the activities, struc?ture, and/or expression levels of these Ca2+?transporting proteins, malignant cancer cells can hijack them to drive essential biological functions for tumor development. However, the molecular mechanisms underlying the participa?tion of STIM–ORAI and IP3Rs in the biological behavior of cancer remain elusive. In this review, we summarize recent advances regarding STIM–ORAI and IP3Rs and discuss how they promote cell proliferation, apoptosis evasion, and cell migration through temporal and spatial rearrangements in certain types of malignant cells. An understanding of the essential roles of STIM–ORAI and IP3Rs may provide new pharmacologic targets that achieve a better therapeutic effect by inhibiting their actions in key intracellular signaling pathways.

Objective To analyze the main factors that influence the hospitalization expenses in patients undergone transsphenoidal pituitary tumor resection so as to provide basis for the development of clinical pathways and the control of irrational increase in medical expenses.Methods Data of patients undergone transsphenoidal pituitary tumor resection in our hospital in the years of 2008 and 2009 was collected.Statistical analysis was performed by using multinomial linear regression analysis.Results The major factors influencing the hospitalization expenses in pafients undergone transsphenoidal pituitary tumor resection included drug fees,material fees in operation,inspection fees and length of stay.Conclusions Avoiding overtreatment,reasonably lowering the drug fees,material fees in operation and inspection fees,as well as reducing the length of stay were the key to the control of the excessive growth of hospitalization expenses in patients undergone transsphenoidal pituitary tumor resection.

OBJECTIVE To study the pharmacokinetic and distribution of arctiin in rats. METHODS Each rat was given a single dose at random by oral administration. The arctiin in serum and organs were determined by use of RP-HPLC. All pharmacokinetic parameters were calculated with a 3P87 program. RESULTS After oral administration of arctiin at the dose of 300mg·kg-1, Arctiin plasma C-T curve conform to open two-compartment model. The Pharmacokinetic parameters were as follow: A=(37.374 5±8.964 7)μg·mL-1;B=(6.210 6±1.489 3)μg·mL-1;α=(0.004 3±0.000 9)min-1;β=(0.000 4±0.000 2)min-1;Kα=(0.420 2±0.167 5)min -1;t1/2α=(115.192 6±14.382 4)min ;t1/2β=(1 485.578 1±161.173 3)min;K10 =(0.001 0±0.000 4)min -1;K21=(0.001 4±0.000 6)min -1 ;K12=(0.002 3±0.001 3)min -1 ;Cmax=(41.786 3±7.521 7)μg·mL-1 ;Tmax=(9.891 9±4.341 4)min;AUC=(22 503.272 7±4 120.182 8)μg·min·mL-1. Liver had the highest concentration of arctiin after oral administration. CONCLUSION RP-HPLC method is rapid, sensitive and specific for the research of arctiin pharmacokinetic and its distribution in rats. Arctiin is distributed and eliminated quickly in rats.

Adolescent ; Child ; Child, Preschool ; Chromosomes, Human, Pair 6 ; Female ; Humans ; Infant ; Loss of Heterozygosity ; Male ; Microsatellite Repeats ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; genetics

nner, reaching peak at a concentration of 30 μmol/L(P < 0. 01). Conclusions RES reduced oxidative stress and apoptosis in an experimental HPLC injury model induced by H2O2. RES plays a key role in the HPLC protection against oxidative injury.