Novel trisaccharide fatty acid ester identified from the fruits of Morinda citrifolia (Noni)   总被引：4，自引：0，他引：4  

Wang M  Kikuzaki H  Csiszar K  Boyd CD  Maunakea A  Fong SF  Ghai G  Rosen RT  Nakatani N  Ho CT 《Journal of agricultural and food chemistry》1999,47(12):4880-4882

Two known glycosides and a novel trisaccharide fatty acid ester were isolated from the n-butanol-soluble fraction of the fruits of Morinda citrifolia (noni). Structure determination was carried out by spectral techniques such as MS, IR, NMR, and 2D-NMR. The novel trisaccharide fatty acid ester was elucidated as 2, 6-di-O-(beta-D-glucopyranosyl)-1-O-octanoyl-beta-D-glucopyranose. The known compounds were identified as rutin and asperulosidic acid.  相似文献   

Novel polyphenol molecule isolated from licorice root (Glycrrhiza glabra) induces apoptosis, G2/M cell cycle arrest, and Bcl-2 phosphorylation in tumor cell lines   总被引：4，自引：0，他引：4  

Rafi MM  Vastano BC  Zhu N  Ho CT  Ghai G  Rosen RT  Gallo MA  DiPaola RS 《Journal of agricultural and food chemistry》2002,50(4):677-684

Herbal therapies are commonly used by patients with cancer, despite little understanding about biologically active chemical derivatives. We recently demonstrated that the herbal combination PC-SPES, which contains licorice root, had anti-prostate cancer activity attributable to estrogen(s) that produced a chemical castration. A recent study also demonstrated that licorice root alone decreased circulating testosterone in men. Other studies demonstrated antitumor activity of PC-SPES in vitro associated with decreased expression of the anti-apoptotic protein Bcl-2 and in patients independent of chemical castration, suggesting that other mechanisms of antitumor activity exist separate from chemical castration. In the present study, we assessed licorice root extract for effects on Bcl-2 to identify novel cytotoxic derivatives. Licorice root extract induced Bcl-2 phosphorylation as demonstrated by immunoblot and G2/M cell cycle arrest, similarly to clinically used antimicrotubule agents such as paclitaxel. Bioassay-directed fractionations resulted in a biologically active fraction for Bcl-2 phosphorylation. HPLC separation followed by mass spectrometry and NMR identified 6 compounds. Only one molecule was responsible for Bcl-2 phosphorylation; it was identified as 1-(2,4-dihydroxyphenyl)-3-hydroxy-3-(4'-hydroxyphenyl) 1-propanone (beta-hydroxy-DHP). The effect on Bcl-2 was structure specific, because alpha-hydroxy-DHP, 1-(2,4-dihydroxyphenyl)-2-hydroxy-3-(4'-hydroxyphenyl) 1-propanone, in contrast to beta-hydroxy-DHP, was not capable of Bcl-2 phosphorylation. Pure beta-hydroxy-DHP induced Bcl-2 phosphorylation in breast and prostate tumor cells, G2/M cell cycle arrest, apoptosis demonstrated by Annexin V and TUNEL assay, decreased cell viability demonstrated by a tetrazolium (MTT) assay, and altered microtubule structure. Therefore, these data demonstrate that licorice root contains beta-hydroxy-DHP, which induced Bcl-2 phosphorylation, apoptosis, and G2/M cell cycle arrest, in breast and prostate tumor cells, similarly to the action of more complex (MW >800) antimicrotubule agents used clinically.  相似文献   

Sphingolipid and other constituents from almond nuts (Prunus amygdalus Batsch)   总被引：3，自引：0，他引：3  

Sang S  Kikuzaki H  Lapsley K  Rosen RT  Nakatani N  Ho CT 《Journal of agricultural and food chemistry》2002,50(16):4709-4712

One sphingolipid, 1-O-beta-D-glucopyranosyl-(2S,3R,4E,8Z)-2-[(2R)-2-hydroxyhexadecanoylamino]-4,8-octadecadiene-1,3-diol, and four other constituents, beta-sitosterol, daucosterol, uridine, and adenosine, have been isolated from the nuts of almond (Prunus amygdalus). Complete assignments of the proton and carbon chemical shifts for the sphingolipid were accomplished on the basis of high-resolution 1D and 2D NMR data. All of these compounds are being reported from almond nuts (P. amygdalus)for the first time.  相似文献   

Meiotic Response of In vitro Matured Canine Oocytes under Different Proteins and Heterologous Hormone Supplementation   总被引：2，自引：0，他引：2  

BA Rodrigues  JL Rodrigues 《Reproduction in domestic animals》2003,38(1):58-62

The impact of TCM‐199 supplemented with different proteins and heterologous hormones on the in vitro maturation (IVM) rate of bitch oocytes was evaluated by nuclear staining under fluorescence microscopy. Oocytes were recovered by slicing of ovaries from bitches presented at various stages of oestrous cycle to ovariohysterectomy. The basic culture medium was TCM‐199 supplemented with 25 mM Hepes/l, with 10% heat‐inactivated oestrous cow serum (ECS), 50 μg/ml gentamicin, 2.2 mg/ml sodium bicarbonate and 22‐μg/ml pyruvic acid, 1.0‐μg/ml oestradiol (E 8875; Sigma), 0.5‐μg/ml follicle‐stimulating hormone (FSH) (Folltropin‐V; Vetrepharm Inc., Ontario, Canada) and 0.03 IU/ml human gonadotropin (hCG) (Profasi HP; Serono, Aubonne, Switzerland). Oocytes were distributed randomly between basic culture medium (control) and the corresponding experimental treatment. Hormone treatments were: oocytes cultured in; (1) medium without FSH, (2) control medium supplemented with 20 μg/ml oestradiol, or (3) medium supplemented with 1 μg/ml human somatotropin (hST; Humatrope, Lilly, Saint Cloud, France). The second experiment consisted of oocytes cultured in medium supplemented with 0.4% (w/v) bovine serum albumin (BSA, fraction V; Gibco Grand Island, NY, USA) instead of ECS, or oocytes cultured in medium with 10% inactivated oestrous bitch serum (EBS) instead of ECS. Oocytes were cultured in 100 μl droplets (up to 25 oocytes per drop) under mineral oil at 37°C in a 100% humidified atmosphere containing 5% CO₂ in air. After 72 h of IVM, the highest rates (p < 0.05) of meiotic resumption were achieved with the 0.4% BSA supplementation. A positive influence on the metaphase II (MII) acquisition rate was observed with hST supplement. Oocytes cultured with 10% EBS supplementation did not develop to the MII stage. The results in this study show that the protein and hormone supplements to TCM‐199 culture medium tested did not promote the final steps of IVM of bitch oocytes.  相似文献   

西藏牦牛和黑白花奶牛生长激素基因AluⅠ多态性的比较研究   总被引：10，自引：0，他引：10  

陈桂芳  李齐发  强巴央宗  土登  谢庄 《畜牧与兽医》2002,34(11):15-16

利用聚合酶链式反应 (PCR)技术 ,测定了西藏牦牛和黑白花奶牛生长激素基因的AluⅠ RFLP (限制性内切酶片段长度多态性 ) ,并比较了2牛群的基因频率。在西藏牦牛和黑白花奶牛中 ,等位基因A的频率分别为 0 935和 0 90 5 ,等位基因B的频率分别为 0 0 65和 0 0 65 ,卡方检验差异不显著 (P >0 0 5)。  相似文献   

High-Frequency Jet Ventilation in Anesthetized, Paralyzed Dogs and Cats Via Transtracheal and and Endotracheal Tube Routes     

Steve C. Haskins DVM  MS  H. Orima  Y. Yamamoto  John D. Patz BA 《Journal of Veterinary Emergency and Critical Care》1991,1(2):55-60

The ability of the SAV 6 high-frequency jet ventilator to effectively ventilate three anesthetized, paralyzed cats (3.2–4.2 kg), two small dogs (7.2 and 10.0 kg), six medium-sized dogs (20.5–25.0 kg), and three large dogs (36.0–43.0 kg) via a 14-gauge (dogs) or a 16-gauge (cats) catheter placed percutaneously into the trachea via the cricothyroid membrane or into a preplaced endotracheal tube was evaluated. The lowest driving pressure within the range of 0.25 to 2.0 kg/cm² (1 kg/cm²= 14.2 psi) and the highest cycle rate within the range of 60 to 240 per minute that would generate a PaCO₂ of 30 ± 3 mm Hg were determined.
All animals could be ventilated to a PaC0₂ of 30 ± 3 mm Hg by the endotracheal tube and transtracheal route, except the largest dogs, which couid be ventilated to an average PaC0₂ of 36 mm Hg by the transtracheal route. The transtracheal route consistently required higher driving pressures and lower cycle rates than did the endotracheal tube route. Cats could be ventilated with a driving pressure of 0.25 kg/cm²; small dogs could be ventilated with 0.5 to 1.0 kg/cm₂; medium-sized dogs with 1.0 to 1.5 kg/cm²; and large dogs with 1.5 to 2.0 kg/cm².
The SAV 6 high-frequency jet ventilator can effectively ventilate cats and dogs (7.2–43.0 kg) via a transtracheal catheter and an endotracheal tube.  相似文献   

Performance promoters in animal nutrition. I. Quantitative factorial analysis of effectiveness     

G. D. Rosen 《Veterinary research communications》1983,7(1):73-81

The nutritional efficacy of antibacterial feed additives in improving animal performance and reducing production costs has been studied extensively for over thirty years. Responses vary greatly with time and place and quantitative estimates thereof are required, with appropriate confidence limits for different circumstances, to assist efficient practical application of such performance promoters in animal production. Modern computers have facilitated multi-factorial analysis of dose-response relationships and the elucidation of the influence of diverse other determinants, such as level of animal performance and duration of supplementation. The objectives, underlying principles, methodology and future prospects of comprehensive assessments, in the format of algebraic models, are reviewed and are illustrated by examples drawn from the use of copper, tylosin and bacitracin in the nutrition of pigs, broilers and laying hens.  相似文献   

X-Chromosomal Monosomy (77, XO) in a Doberman Pinscher With Gonadal Dysgenesis     

F. W. K. Smith Jr  DVM  L. C. Buoen BA    A. F. Weber DVM  PhD    S. D. Johnston DVM  PhD    J. F. Randolph DVM  D. J. Waters DVM 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1989,3(2):90-95

A 6-month-old stunted female Doberman Pinscher was found to have a 77,X0 chromosomal complement. The ovaries were small, consisting primarily of interstitial-type cells and solid epithelial cords. The dam, sire, and a male littermate had normal karyotypes.  相似文献   

Zur Kenntnis der Pteromaliden-GenusMesopolobus Westwood 1833Hym., Chalc.)     

Rosen H. v. 《Journal of pest science》1961,34(4):62

Ohne Zusammenfassung  相似文献   

Comparison of the properties of hyaluronate products used in treatment of joint dysfunction in horses     

Sandra A. Loftus BA  Jill M. Montplaisir BS  Jing-wen Kuo MS  Dale P. DeVore PhD   《Journal of Equine Veterinary Science》1988,8(2)

A standardized investigation was conducted to compare the biophysical properties of hyaluronate products used in the treatment of joint dysfunction in horses. Results showed that two of the five products, Hyvisc® and Hylartin®V, contained higher-weight molecular hyaluronate (greater than 1.5×10⁶). Other investigations have shown that higher molecular weight hyaluronate is effective in providing physical resistance to shear, in stimulating endogenous hyaluronate synthesis, and in inhibiting excess cell proliferation which may be associated with synovial pannus formation. It is suggested that the therapeutic benefits of hyaluronate products may be dependent on the molecular size of the hyaluronate molecules. Higher molecular weight hyaluronate products would be expected to be more effective than lower molecular hyaluronate products in providing therapeutic benefits.  相似文献