Adult ; Female ; Humans ; Kartagener Syndrome

Objective To evaluate the effects of different doses of dexmedetomidine on atrioventricular node (AVN) conduction function in the healthy volunteers.Methods Sixteen healthy volunteers of both sexes,aged 18-30 yr,with body mass index of 19-26 kg/m2,were included in the study.Dexmedetomidine was infused in a loading dose of 1.0 μg/kg over 10 min,followed by an infusion of 0.5 μg · kg-1 · h 1 for 50 min (Dose Ⅰ);1-2 weeks later,dexmedetomidine was infused in a loading dose of 1.5 μg/kg over 10 min,followed by an infusion of 0.75 μg · kg-1 · h-1 for 50 min (Dose Ⅱ).Before infusion of dexmedetomidine (T0) and at 15 and 35 min of infusion (T1.2),AVN Wenckebach point,AVN 2 ∶ 1 block point,AVN relative refractory period (AVNRRP),and AVN effective refractory period (AVNERP) were measured.Results AVN Wenckebach point and AVN 2 ∶ 1 block point were significantly decreased,and AVNRRP and AVNERP were significantly prolonged at T1,2 compared with those at T0 (P＜0.05).Compared with Dose Ⅰ,AVN Wenckebach point at T2 and AVN 2 ∶ 1 block point at T1,2 were significantly decreased,and AVNRRP and AVNERP were significantly prolonged at T1,2 in the subjects receiving Dose Ⅱ] (P＜0.05).Conclusion Dexmedetomidine can inhibit AVN conduction function in the healthy volunteers,and the inhibitory effect is enhanced with the increasing doses.

Aim To study the effect of novel AChE inhibitors, 2-phenoxy-indan-1-one derivatives (YKY-1~7), against glutamatic acid-induced neurotoxicity in PC12 cells and on learning & memory impairment in dementia model mice induced by A?25~35 icv Methods The PC12 cells were preincubated with different concentrations of YKY-1~7 for 24 h and subsequently treated by glutamatic acid, at the high concentration of 2 mmol?L-1 for 15 min to induce cytotoxicity. The cell viability was assessed with MTT method.. Dementia model mice were made by intracerebroventricular injection (icv) of aggregated A?25~35. From the next day, the model mice were administered YKY-7 (2.5, 5, 10 mg?kg-1, ig) for 10 consecutive days and sham control mice or A? model control mice received daily ig saline. After the final treatment, the passive avoidance learning was tested, regional cerebral blood flow at cerebral cortex was assessed, and the activity of AChE in the cerebral cortex, hippocampus and blood serum were determined. Results Six out of the seven YKY compounds appeared to be effective against glutamatic acid-induced neurotoxicity in PC12 cells, with YKY-7 demonstrating the most activity. YKY-7 significantly ameliorated the learning and memory ability in dementia model mice induced by A?25-35 icv, slightly and selectively inhibited the cortical and hippocampal AChE, and gently increased the blood flow at cerebral cortex. Conclusion Some of 2-phenoxy-indan-1-one derivatives reported here have protective effects against glutamatic acid induced neurotoxicity in PC12 cells, and improve the learning and memory impairment induced by A?25-35, which may be partly attributable to its selective inhibition of AChE activity in the cerebral cortex and hippocampus.

OBJECTIVETo clarity the original plants and the main application varieties of White Flos Gentianae.

METHODHerbal textual research, wild specimen collection, investigation and collection of the samples from Tibetan hospital, Tibetan pharmaceutical factory and medical material market were carried out simultaneously to identify the original plants of White Flos Gentianae.

RESULTThe results of varieties textual research and specimen identification showed that Gentiana szechenyii, G. purdomii and G. algida were in accord with the record of Tibetan herbal textual The three species above were the original plants of White Flos Gentianae. The identification of 20 batches samples showed that G. szechenyii was the main application variety. The other varieties were only used in Tibetan hospitals. All the samples above were flowering branches.

CONCLUSIONIt was necessary to strengthen the research on variety systematization of White Flos Gentianae make a further discussion on the taxonomy position of G. purdomii, G. algida and the white flos population. Its was also nessary to establish and improve the quality standard of different variety based on the principle of "one species, one name". The quality specification of White Flos Gentianae should be established and improved to standard clinical utilization and produce feeding. More study of resources investigation and cultivation of G. szechenyii should be carried on to meet the demand of produce and clinic.

China ; Drug Therapy ; Drugs, Chinese Herbal ; chemistry ; therapeutic use ; Flowers ; anatomy & histology ; chemistry ; growth & development ; Gentiana ; anatomy & histology ; chemistry ; classification ; growth & development ; History, Ancient ; Humans ; Medicine in Literature ; Medicine, Tibetan Traditional ; history ; Plants, Medicinal ; chemistry ; classification ; growth & development

OBJECTIVETo explore safe, effective, simple and easy non-drug treatments for grade 1 essential hypertension.

METHODSAccording to TCM syndrome differentiation, 126 cases of grade 1 essential hypertension were classified into 4 types: liver-fire hyperactivity syndrome, yin-deficiency and yang-hyperactivity syndrome, excessive phlegm-dampness syndrome, yin-yang deficiency syndrome, and then the patients were randomly divided into a photoelectric combined with musical treatment group (group A), an acupuncture group(group B) and a placebo group (group C). The acupoints were selected according to TCM syndrome differentiation in group A and group B, and multi-mode audio frequency pulse photoelectric therapeutic apparatus and acupuncture were used in the two groups respectively, once daily. Taichong (LR 3) and Quchi (LI 11) were selected in liver-fire hyperactivity syndrome, Taixi (KI 3) and Sanyinjiao (SP 6) were selected yi yin-deficiency and yang-hyperactivity syndrome, Zusanli (ST 36) and Fenglong (ST 40) were selected in excessive phlegm-dampness syndrome, while Taixi (KI 3) and Guanyuan (CV 4) were selected yi yirryang deficiency syndrome. The group C was treated with oral administration of starch tablet (25 mg), one tablet each time,three times everyday. Ten days were considered as one course, totally three courses were required in the three groups. The blood pressure and scores of TCM syndromes before and after treatment were compared among the three groups.

RESULTSThe blood pressure decreased significantly after treatment in group A and group B (all P<0.01), and the decrease in systolic blood pressure was more significant in group A (P < 0.05). The total effective rate was 90.5 / (38/42) in group A, which was superior to 71. 4 (30/42, P < 0.05) in group B and 19.1% (18/34, P<0. 01) in group C. The scores of TCM syndromes were both improved in group A and group B, but without significant difference between the two groups (P > 0.05).

CONCLUSIONThe clinical effect of multi-mode audio frequency pulse photoelectric therapeutic apparatus for treatment of grade 1 essential hypertension is reliable. Meanwhile, it has the advantages of a non-invasive and simple operation.

Acupuncture Points ; Adult ; Aged ; Blood Pressure ; Combined Modality Therapy ; Electric Stimulation Therapy ; Essential Hypertension ; Female ; Humans ; Hypertension ; physiopathology ; therapy ; Laser Therapy ; Male ; Middle Aged ; Music Therapy ; Treatment Outcome

Objective To investigate the role of Wnt/β-catenin signaling pathway in impaired wound healing of diabetes mellitus.Methods The back skin defect was produced in rats with type1diabetes.All of these rats were divided into normal group, diabetes group, lithium chloride group, and epidermal growth factor (EGF) group.The back wound healing and β-catenin expression were observed.Results There were no signs of infection in the wound of rats after injury.Compared with diabetic group, the wound healing time was shorter,wound healing rate was higher, wound cavity volume was smaller, granulation tissue was more mature, and β-catenin positive cell rate was higher in normal group, lithium chloride group, and EGF group(P＜0.05 or P＜0.01).Conclusions Wnt/beta-catenin signaling pathway is involved in the process of wound healing in diabetic rats.

BACKGROUND: Angiogenesis attracts much attention in tissue engineering field. Previous research has proved that a two-dimensional culture of vascular endothelial growth factor (VEGF) promotes angiogenesis.OBJECTIVE: To evaluate the effect of VEGF on three-dimensional angiogenesis.METHODS: Endothelial progenitor cells were separated from the SD rat bone marrow. At about 70%-80% fusion, rat tail collagen gel was added to establish three-dimensional models. Samples in the experimental group were incubated in complete culture solution containing M199 culture media, fetal bovine serum, VEGF, and double antibody. The samples in the control group were incubated with VEGF-free culture media. In vitro culture and amplification of bone marrow-derived endothelial progenitor cells were determined at 1, 4, 7, and-20 days after incubation. Morphology and quantitative analysis were performed at 3, 6, 9, and 12 days after three-dimensional model establishment.RESULTS AND CONCLUSION: Endothelial progenitor cells grew from three-dimensional matrix into collagen matrix in the experimental group. Budding and infiltration were observed in the collagen within 24 hours, and branching-like structure was then gradually formed. Cells in the control group grew slowly, with slowing budding, small tubiform structure, superficial infiltration into COllagen, sparse network structure, and non-intact. Numbers of newborn vessels in the expedmental group were significantly greater than control group (P<0.01). A detection on gel block showed positive expressions of endothelin-1 and endothelial nitric oxide synthase-3 on the 3~(rd), 6~(th), 9~(th), and 12~(th) days. The results demonstrated that VEGF mobilized and induced endothelial progenitor cells in order to promote angiogenesis. Rat tail collagen gel induced endothelial progenitor cells which behaved migration, proliferation, and pullulation of angiogenesis.

Voltage-gated sodium channels are critical for the generation and conduction of nerve impulses. Recent studies show that in primary sensory neurons, the expression and dynamic regulation of several sodium channel subtypes play important roles in neuropathic pain. A number of SCN9A (encoding Nav1.7) gene point mutations are related with human genetic pain disorders. Transgenic and specific knockout techniques have revealed that Nav1.3, Nav1.8, Nav1.9 are important for the development and maintenance of neuropathic pain condition. Specific blockers of these sodium channels have been demonstrated to be effective in alleviating allodynia and hyperalgesia. Here we reviewed the roles of sodium channels in neuropathic pain, which may be applicable for the development of new drugs with enhanced efficacy for neuropathic pain treatment.
Animals ; Humans ; Neuralgia ; genetics ; metabolism ; physiopathology ; Neurons ; metabolism ; physiology ; Sodium Channels ; genetics ; metabolism ; physiology

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

Adenocarcinoma ; metabolism ; secondary ; Adult ; Aged ; CDX2 Transcription Factor ; Carcinoma, Signet Ring Cell ; metabolism ; pathology ; Colonic Neoplasms ; metabolism ; pathology ; Cystadenocarcinoma, Mucinous ; metabolism ; pathology ; Cystadenocarcinoma, Serous ; metabolism ; pathology ; Diagnosis, Differential ; Female ; Homeodomain Proteins ; metabolism ; Humans ; Keratin-20 ; metabolism ; Keratin-7 ; metabolism ; Middle Aged ; Ovarian Neoplasms ; metabolism ; pathology ; secondary ; Trans-Activators ; metabolism ; Young Adult