In this paper, absorption and pharmacokinetic study of Radix Rehmanniae was studied by liquid chromatography coupled with mass spectrometry method after oral administration to rats. By comparing the chromatograms of ultraviolet, full scan, extracted ion and selective reaction monitoring (SRM) of standard solution, Radix Rehmanniae, blank plasma and rat plasma post drug administration, catalpol and ajugol were found to be the main compounds absorbed from Radix Rehmanniae. Plasma concentrations of aucubin, dihydrocatalpol, rehmannioside A (or rehmannioside B/ melittoside) and rehmannioside D were very low. Quantitative method for catalpol and aucubin and semi-quantitative method for other compounds in rat plasma were established. The pharmacokinetic study of those absorbed components was conducted after oral administration of 6 g x kg(-1) Radix Rehmanniae water extract to rats. Cmax, t(1/2) and AUC(0-infinity) of catalpol and ajugol were (2349.05 +/- 1438.34) and (104.25 +/- 82.05) ng x mL(-1), (0.86 +/- 0.32) and (0.96 +/- 0.37) h, (4407.58 +/- 2734.89) and (226.66 +/- 188.38) ng x h x mL(-1), respectively. tmax was at 1.00 h for catalpol and ajugol. Both catalpol and ajugol were absorbed and excreted rapidly.

Adult ; Aggressive Periodontitis ; diagnosis ; diagnostic imaging ; therapy ; Combined Modality Therapy ; Dental Scaling ; Female ; Humans ; Orthodontics, Corrective ; Radiography ; Tooth Loss ; diagnosis ; diagnostic imaging ; therapy

In order to investigate the mechanism, the correlation between the odor change in Crataegi Fructus stir-fried process and 5-HMF were studied. Required samples were retrieved from Crataegi Fructus stir-fried process. Statistical quality control (SQC) was used to analyze the response values acquired by the electronic nose. At the same time, the content of 5-HMF was detected by high performance liquid chromatography (HPLC). Correlation analysis was used to analyze the relationship between the above two. Experimental results showed that SQC model established by response values of all samples could show the change law of odor in Crataegi Fructus stir-fried process and changes of 5-HMF content was dropped after the first increase. Correlation analysis showed that the odor change in Crataegi Fructus stir-fried process and 5-HMF were significantly correlated (P < 0.05). Sugar degradation reaction and the Maillard reaction may be one of the mechanisms of the odor change in Crataegi Fructus stir-fried process.
Chromatography, High Pressure Liquid ; Crataegus ; chemistry ; Furaldehyde ; analogs & derivatives ; analysis ; Hot Temperature ; Odorants ; analysis ; Plant Extracts ; analysis ; Technology, Pharmaceutical ; methods

BACKGROUND: Stellate ganglion block has the ability to improve the imbalance of the autonomic nervous system in perimenopausal syndrome. Lumbosacral plexus is an automatic nervous block, and exerts similar effects with stellate ganglion block. OBJECTIVE: To investigate the effect of lumbosacral plexus block on the serum level of hormones and histology of the ovary in rabbits, thus providing a new treatment strategy for perimenopausal syndrome. METHODS: This was a randomized controlled animal experiment, which was finished at the Animal Center of Guiyang Medical Unversity, China. The healthy rabbits were randomly divided into experimental and control groups, and underwent lumbosacral plexus block by injecting 0.5 mg of vitamin B12, 100 mg of lidocaine and 10 mL of normal saline into the psoas compartment, and the same volume of normal saline, respectively. The effect of lumbosacral plexus block on the serum levels of hormones (estradiol, gonadotropin releasing hormone, follicle-stimulating hormone and luteinizing hormone) at rabbit proestrus, estrus and metaestrus were observed, respectively. The pathological changes of the ovary in a complete estrus cycle were observed. The relationship between the treatment time of lumbosacral plexus block and the levels of hormones was investigated after 1, 3 and 6 complete estrus cycles. The experimental followed the national guidelines for the Care and Use of Laboratory Animals, and Consensus author guidelines on animal ethics and welfare by the International Association for Veterinary Editors (IAVE), and prepared in accordance with the Animal Research: Reporting of In Vivo Experiments Guidelines (ARRIVE Guidelines). RESULTS AND CONCLUSION: Lumbosacral plexus block can increase the serum level of estrogen, reduce the serum levels of follicle-stimulating hormone and luteinizing hormone, and regulate the hypothalamic-pituitary-ovary axis function. Presumably, it may be used as a treatment method or adjuvant therapy of perimenopausal syndrome. Future experiments are needed to explore the effect of lumbosacral plexus block on the serum levels of hormones in a rabbit after oophorectomy to determine whether it exhibits the same effect on ovarian failure.

Objective To discuss the optimal timing of fixation for femoral shaft fractures with concomitant head injuries. MethodsEarly and delayed complications,mortality rate,interval of ICU and duration of hospital stay were compared among 137 patients with head injuries,so as to evaluate the curative effect of early fixation of femoral shaft fracture(n=56) and delayed fixation(n=81).Results Early fixation group enjoyed advantages in the interval of ICU,duration of hospital stay,associated shock and infection rate over the delayed fixation group(P

OBJECTIVETo study the effect of Zhusha Anshen pill, cinnabar, HgS, HgCl2 and MeHg on the gene expression of renal transporters in mice.

METHODHealthy male mice were given equivalent physiological saline, Zhusha Anshen pill (1.8 g · kg(-1), containing 0.17 g · kg(-1) of mercury), cinnabar (0.2 g · kg(-1), containing 1.7 g · kg(-1) of mercury), high dose cinnabar (2 g · kg(-1), containing 1.7 g · kg(-1) of mercury), HgS (0.2 g · kg(-1), containing 0.17 g · kg(-1) of mercury), HgCl2 (0.032 g · kg(-1), containing 0. 024 g · kg(-1) of mercury), MeHg (0.026 g · kg(-1), containing 0.024 g · kg(-1) of mercury), once daily, for 30 d, measuring body mass gain. 30 days later, the mice were sacrificed. The mercury accumulation in kidneys was detected with atomic fluorescence spectrometer. Expressions of Oat1, Oat2, Oat3, Mrp2, Mrp4, Urat1 were detected with RT-PCR.

RESULTCompared with the normal control group, a significant accumulation of Hg in kidney in HgCl2 and MeHg groups was observed (P <0.05), but these changes were not found in other groups. Compared with normal control group, mRNA expressions of Oat1 and Oat2 were evidently lower in HgCl2 and MeHg groups, but mRNA expressions of Mrp2 were apparently higher in HgCl2 group (P <0.05), mRNA expression of Mrp4 was significant higher in HgCl2 and MeHg groups, and mRNA expression of Urat1 was apparently lower in MeHg group.

CONCLUSIONHgCl2 and MeHg groups show significant difference from the normal group in mercury accumulation in kidneys and gene expression of kidney transporters, but with no difference between other groups and the normal group. Compared with HgCl2 and MeHg, cinnabar and its compounds could cause lower renal toxicity to mice.

Animals ; Carrier Proteins ; genetics ; Drugs, Chinese Herbal ; toxicity ; Gene Expression ; drug effects ; Kidney ; drug effects ; metabolism ; Male ; Mercuric Chloride ; toxicity ; Mercury Compounds ; toxicity ; Methylmercury Compounds ; toxicity ; Mice ; Multidrug Resistance-Associated Proteins ; genetics ; Organic Anion Transport Protein 1 ; genetics ; Organic Anion Transporters, Sodium-Independent ; genetics

Objective To explore the clinicopathological features of IgA nephrolpathy associated with malignant hypertension (IgAN-MHT) and to analyze their correlation with renal vascular lesions. Methods Twenty-nine patients of IgAN-MHT were screened from 2000 biopsy-proven eases with primary IgA nephropathy (IgAN) in our department from April 1997 to May 2007. Data of clinicopathology and follow-up of these 29 patients were collected. Semi- quantitative analysis was performed to evaluate the pathological changes. Inner lumen, outer lumen, intimal thickness, tunica media-to-internal lumen ratio of 436 arterioles, 124 interlobular arteries and 5 arcuate arteries were measured. The primary endpeint was the composite of a doubling of serum creatinine level and ESRD. Correlations of renal vascular lesions with clinical manifestation, pathological change and prognosis were examined by Spearman and Cox methods. Results 1.5% of all the IgAN patients presented malignant hypertension. The common clinical features were renal failure (100%), hyperurieacidemia (62.7%) and hypertriglyceridemia (51.7%). The average amount of urine protein excretion was 2.8 g/d. The common pathological changes were moderate mesangial proliferation, severe global sclerosis, severe interstitial inflammation and severe interstitial- tubular fibrosis. The small arteries (arcuate arteries and interlobular arteries) and arterioles (afferent arterioles) were both involved in IgAN-MHT. The characteristic lesions of intrarenal arteries included vascular occlusion, media thickening, proliferative endarteritis (onionskin lesion, musculomucoid intimal hyperplasia), hyaline arteriosclerosis, but mainly vascular occlusion (86.2%). The arteriole lesion was negatively correlated with age and total protein level; vascular occlusion was positively correlated with uric acid level. The average foUow-up period was 21.1 months. Forteen patients reached the endpoint. The arteriole lesion was the main independent risk factor for the progression of IgAN-MHT (RR=10.21, 95%CI=1.16～89.67). Conclusions The main clinical feature of IgAN-MHT is renal failure. The main histological feature of intrarenal vascular lesions is occludes arterioles. Arteriole lesion is the main independent risk factor for the progression of IgAN-MHT.

OBJECTIVETo study the effects of estrogen receptor (ER) alpha gene polymorphism on the migration of T lymphocyte subsets and related cytokines in the female patients with primary biliary cirrhosis(PBC).

METHODSThis study was conducted with sixty female PBC patients without treatment as the study group and fifty-two healthy people wtih sex and age met the requirements of the study as the control group. The polymorphism of restriction enzyme cutting site of Xba I and Pvu II in intron 1 of ERa gene was detected by polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP). CD4+, CD8+, CD4+CD25+ and CD4+CD28- T lymphocytes in peripheral blood were quantitatively detected by flow cytometry. RT-PCR method was used to detect the expression of TNFa, IL-2, IFNgamma, IL-4, IL-6 and IL-10 in peripheral mononuclear cells.

RESULTSThe positive rate of Pp in ERa gene Pvu II enzyme gene subtypes of female PBC patients was significantly greater than that of the control group, and the positive rate of pp gene subtype was significantly smaller than that of the control group (X2 = 7.2880, P = 0.0261). The difference of Xba I genotype and allele frequency between the female PBC patients group and the control group was not of statistical significance (X2 = 6.5382, P = 0.5833). The proportion of CD4+ T in T lymphocytes of PBC patients was increased to 45.31%+/-5.26%, compared with 33.81%+/-3.87% in the control group; and the proportion of CD8+ T lymphocytes was decreased to 27.78%+/-1.43 % from 31.83%+/-1.73% in the control group. In comparison with the control group, the proportion of CD4+CD25+ T lymphocytes decreased significantly, while that of CD4+CD28- T lymphocytes rose significantly. The expression levels of TNFa, IL-2 and IFNgamma mRNA were 0.59+/-0.19, 0.71+/-0.29 and 0.67+/-0.21 respectively, which were significantly higher than that in the control group (0.22+/-0.13, 0.31+/-0.14, 0.27+/-0.13) (t = 6.93, 5.07, 7.01, P value less than 0.01); the expression level of IL-6 mRNA was increased to 0.45+/-0.21 from 0.34+/-0.16 in the control group (t = 1.84, P value less than 0.05); and the difference of the expression levels of IL-4 and IL-10 mRNA between two groups was not of statistical significance.

CONCLUSIONPp of gene Pvu II was a genetically susceptible genotype in female PBC patients, and the allele p was a susceptible gene. Th1 cell subsets and related cytokines were dominant in peripheral blood of PBC patients. As a background of genetic susceptibility, ERa gene polymorphism could affect the shift of T lymphocyte subsets and the expression of the related cytokines in PBC patients.

Aged ; Case-Control Studies ; Estrogen Receptor alpha ; genetics ; Female ; Humans ; Interferon-gamma ; metabolism ; Interleukin-2 ; metabolism ; Interleukin-6 ; metabolism ; Liver Cirrhosis, Biliary ; genetics ; metabolism ; Middle Aged ; Polymorphism, Single Nucleotide ; T-Lymphocyte Subsets ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism

Objective To evaluate the significance of CT assessment for extraarticular anatomy in treatment of displaced intraarticular calcaneal fractures.Methods(1)Measurement of normal calcaneum 40 pieces of adult calcaneum specimen were measured,items of measurement included height of culmination of posterior facet and tuberosity,width of posterior edge of sustentaculum and tuberosity.(2)CT measurement of calcaneum.Transverse(axial)and coronal CT scanning were obtained from 20 feet with displaced intraarticular calcaneal and 20 normal feet as control.Following items were measured in CT scanning:the height of culmination of posterior facet and tuberosity,the coronal talocalcaneal angle,in coronal scanning,the width of posterior edge of sustentaculum and tuberosity,the axial calcaneocuboid angle,in axial scanning.Results(1)Measurement of height of calcaneum height of culmination of posterior facet and tuberosity of calcaneal specimen were(43.07?2.85)mm and(44.69?3.67)mm respectively,and these two items from CT scanning of normal feet were(42.84?1.66)mm,(43.40? 3.01)nun,and from CT scanning of feet with calcaneal fractures were(34.76?3.24)mm,(40.41? 3.69)mm.There was a statistically significant different between these two items for normal calcaneal specimen and for CT scanning of feet with ealcaneal fractures(P

OBJECTIVETo explore the protection of high intensity microwave radiation on hypothalamo-pituitary-adrenal axis (HPAA) activity and hippocampal CA1 structure in rats and the protectiveeffect of Qindan Granule (QG) on radiation injured rats.

METHODSTotally 48 Wistar rats were randomlydivided into 8 groups, i.e., the normal control group, post-radiation day 1, 7, and 10 groups, 7 and 10days prevention groups, day 7 and 10 treatment groups, 6 in each group. Rats in prevention groups wererespectively administered with QG liquid (1 mL/100 g, 4. 75 g crude drugs) for 7 days and 10 days bygastrogavage and then microwave radiation. Then preventive effect for radiation injury was statisticallycalculated with the normal control group and the post-radiation day 1 group. Rats in treatment groupswere firstly irradiated, and then administered with QG liquid (1 mL/100 g, 4.75 g crude drugs). Finally preventive effect for radiation injury was statistically calculated with the normal control group, post-radiation day 7 and 10 groups. Contents of corticotrophin releasing hormone (CRH), beta endorphin (beta-EP), adrenocorticotropic hormone (ACTH), and heat shock protein 70 (HSP70) were detected. Morphological changes and structure of hippocampal CA1 region were observed under light microscope.

RESULTSCompared with the normal control group, contents of CRH and beta-EP significantly decreased in each radiation group. Serum contents of ACTH and beta-EP significantly increased in post-radiation day 1 and 7 groups (P < 0.05). Compared with radiation groups, beta-EP content in serum and pituitary significantly increased, and serum ACTH content significantly decreased in prevention groups (P < 0.05). Pituitary contents of CRH and beta-EP significantly increased in prevention groups. Serum contents of ACTH, beta-EP, and HSP70 were significantly lower in day 7 treatment group than post-radiation day 7 group (P < 0.05). Morphological results showed that pyramidal neurons in the hippocampal CA1 region arranged in disorder, with swollen cells, shrunken and condensed nucleus, dark dyeing cytoplasm, unclear structure. Vessels in partial regions were dilated with static blood; tissues were swollen and sparse. In prevention and treatment groups pathological damage of hippocampal CA1 region was obviously attenuated; neurons were arranged more regularly; swollen, pycnotic, or deleted neuron number were decreased; vascular dilatation and congestion was lessened.

CONCLUSIONQG could affect HPAA function and activity of high intensity microwave radiated rats, showing certain preventive and therapeutic effects of microwave radiated rats by adjusting synthesis and release of partial bioactive peptides and hormones in HPAA, improving pathological injury in hippocampal CA1 region.

Adrenocorticotropic Hormone ; blood ; Animals ; CA1 Region, Hippocampal ; drug effects ; pathology ; radiation effects ; Corticotropin-Releasing Hormone ; metabolism ; Drugs, Chinese Herbal ; pharmacology ; HSP70 Heat-Shock Proteins ; blood ; Hypothalamo-Hypophyseal System ; drug effects ; radiation effects ; Microwaves ; adverse effects ; Pituitary-Adrenal System ; drug effects ; radiation effects ; Random Allocation ; Rats ; Rats, Wistar ; beta-Endorphin ; blood ; metabolism