Catalog number: 218964-42-2
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251.5ºC at 760 mmHg
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1.Vitamin B6 Modifies the Immune Cross-Talk between Mononuclear and Colon Carcinoma Cells.
Bessler H1, Djaldetti M1. Folia Biol (Praha). 2016;62(1):47-52.
The role of vitamin B6 as a key component in a number of biological events has been well established. Based on the relationship between chronic inflammation and carcinogenesis on the one hand, and the interaction between immune and cancer cells expressed by modulated cytokine production on the other hand, the aim of the present work was to examine the possibility that vitamin B6 affects cancer development by an interference in the cross-talk between human peripheral blood mononuclear cells (PBMC) and those from two colon carcinoma cell lines. Both non-stimulated PBMC and mononuclear cells induced for cytokine production by HT-29 and RKO cells from human colon carcinoma lines were incubated without and with 4, 20 and 100 μg/ml of pyridoxal hydrochloride (vitamin B6) and secretion of TNF-α, IL-1β, IL-6, IFN-γ, IL-10, and IL-1ra was examined. Vit B6 caused a dose-dependent decrease in production of all cytokines examined, except for that of IL-1ra.
2.Alteration of fatal 1:1 conducted atrial flutter to less conducted ratio by landiolol infusion.
Takata J1, Haruyama N2, Arashi T2, Mae T2. J Anesth. 2016 Apr 16. [Epub ahead of print]
An 84-year-old male patient with a past history of atrial-flutter-fibrillation and dementia underwent an urgent femoral neck fracture surgery. Preoperative electrocardiography demonstrated atrial flutter (AFL) with ventricular conduction at a ratio of 2:1-4:1, and transthoracic echocardiography showed severe left ventricular dysfunction with Ejection Fraction of 14.6 %. Femoral nerve block and Lateral femoral cutaneous nerve block with sedation was planned for the surgery. Upon entry to the operating room, ECG showed 2:1 conducted AFL at the rate of 128 beats min-1. Due to the stimulation of urethral catheter insertion, it has altered to 1:1 conducted AFL. Loading dose of landiolol hydrochloride 7.5 mg followed by 1.5-3 μg/kg/min continuous administration was given, which had decreased the conduction ratio to 2:1 without causing hypotension. A further episode of 1:1 conducted AFL occurred when the pin was inserted to the thighbone, which caused circulatory collapse.
3.Treatment of experimental autoimmune uveoretinitis with different natural compounds.
Li M1, Chen X1, Liu J2, Wang D2, Gan L1, Lv X1, Qiao Y2. Mol Med Rep. 2016 Apr 8. doi: 10.3892/mmr.2016.5096. [Epub ahead of print]
Uveitis is an important eye disease that potentially causes loss of sight. Although extensive studies have been conducted on uveitis, the exact pathogenesis remains to be determined. The effects of treatment with natural compounds on an experimental autoimmune uveoretinitis (EAU) rat model were examined in the present study. A total of 25 rats were divided into 5 groups: Alkaloids (n=5), saponins (n=5), flavonoids (n=5), phenols (n=5), and the normal saline group (n=5). The rats in each group were treated with an intraperitoneal injection of proper alkaloids (berberine hydrochloride), saponins (steroidal saponins), flavonoids (baicalein), or phenols (chlorogenic acid) or physiological saline, respectively. The rats' aqueous humour and crystalline lens was then observed under the slit lamp periodically, looking for signs of inflammation. After 2 weeks, the rats were sacrificed and the degree of pathological changes on their eyeballs under different treatment methods were determined using an optical microscope.
4.Ursolic acid induced anti-proliferation effects in rat primary vascular smooth muscle cells is associated with inhibition of microRNA-21 and subsequent PTEN/PI3K.
Jiang Q1, Han Y1, Gao H1, Tian R1, Li P2, Wang C3. Eur J Pharmacol. 2016 Apr 13. pii: S0014-2999(16)30205-9. doi: 10.1016/j.ejphar.2016.04.001. [Epub ahead of print]
This study focused on the anti-proliferation effects of ursolic acid (UA) in rat primary vascular smooth muscle cells (VSMCs) and investigated underlying molecular mechanism of action. Rat primary VSMCs were pretreated with UA (10, 20 or 30μM) or amino guanidine (AG, 50μM) for 12h or with PI3K inhibitor LY294002 for 30min or with Akt inhibitor MK2206 for 24h, then 10% fetal bovine serum was used to induce proliferation. CCK-8 was used to assess cell proliferation. To explore the mechanism, cells were treated with UA (10, 20 or 30μM), LY294002 or MK2206, or transient transfected to inhibit miRNA-21 (miRNA-21) or to overepxress PTEN, then quantitative real-time PCR was used to assess the mRNA levels of miRNA-21 and phosphatase and tensin homolog (PTEN) for cells treated with UA or miRNA-21 inhibitor; western blotting was used to measure the protein levels of PTEN and PI3K. UA exerted significant anti-proliferation effects in rat primary VSMCs.
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