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Showing 13 to 24 of 153 entries
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Thin-layer chromatographic method for separation and determination of papaverine and its oxidation products.

Talanta

Habashy GM, Farid NA.
PMID: 18961335
Talanta. 1973 Jul;20(7):699-702. doi: 10.1016/0039-9140(73)80125-0.

A method is presented for the separation of papaverine, papaverinol and papaveraldine by TLC on silica gel with chloroform saturated with ammonia as the solvent system. The spots are extracted with absolute methanol and each compound determined spectrophotometrically in...

Intradural Aneurysm Caused by Arterial Injury during Surgery: Treatment with Coil Embolization.

Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences

Oran I, Parildar M, Dalbasti T, Memis A, Ozdamar N.
PMID: 20663370
Interv Neuroradiol. 2001 Dec 22;7(4):353-6. doi: 10.1177/159101990100700413. Epub 2002 Jan 10.

SUMMARY: We described a patient with subarachnoid hemorrhage due to a ruptured intradural aneurysm caused by arterial injury during surgery and severe symptomatic vasospasm. The iatrogenic posttraumatic aneurysm was occluded by using GDC with preservation of parent artery followed...

Cytokinin N-glucosylation inhibitors suppress deactivation of exogenous cytokinins in radish, but their effect on active endogenous cytokinins is counteracted by other regulatory mechanisms.

Physiologia plantarum

Blagoeva E, Dobrev PI, Malbeck J, Motyka V, Strnad M, Hanus J, Vanková R.
PMID: 15153188
Physiol Plant. 2004 Jun;121(2):215-222. doi: 10.1111/j.1399-3054.2004.00320.x.

The prolongation of the effect of exogenous cytokinins by inhibition of their inactivation was studied in Raphanus sativus L. cv. Rampouch. As in radish the main way of cytokinin inactivation is their N-glucosylation, inhibitors of this pathway, papaverine, theophylline...

Trapped microcatheter from vessel spasm: safe removal after double microcatheter technique and local papaverine infusion.

Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences

Celedin S, Song JK, Valavanis A.
PMID: 20569554
Interv Neuroradiol. 2006 Mar 15;12(1):61-4. doi: 10.1177/159101990601200112. Epub 2006 Jun 15.

SUMMARY: In a child undergoing combined transarterial and direct percutaneous puncture embolization of an extensive and complex facial arteriovenous malformation, severe arterial spasm fixed a flow-directed microcatheter in an ethmoidal branch of the left ophthalmic artery. Multiple traction attempts...

Assessment of recurrent mesenteric ischemia after stenting with a pressure wire.

Vascular medicine (London, England)

Margiotta A, Gray BH.
PMID: 24572433
Vasc Med. 2014 Apr;19(2):137-141. doi: 10.1177/1358863X14524852. Epub 2014 Feb 26.

Chronic mesenteric artery ischemia can be difficult to evaluate after stent placement. This case describes the use of a pressure wire to demonstrate the hemodynamic significance of in-stent restenosis. Papaverine was used to vasodilate the mesenteric bed, mimicking the...

Skeletonized Radial Artery Graft Prepared With Phosphodiesterase-III Inhibitors Indicates Favorable Results Compared With Pedicled Radial Artery Graft in Angiographic Studies.

Innovations (Philadelphia, Pa.)

Yamaguchi S, Watanabe G, Higasidani K, Tomita S, Iino K, Ujiie T, Yamamoto S.
PMID: 22436754
Innovations (Phila). 2006;1(5):251-4. doi: 10.1097/01.IMI.0000229896.86592.36.

OBJECTIVES: : The technique used to harvest the radial artery was modified, with improved results. Skeletonized radial artery conduits prepared with phosphodiesterase-III inhibitor were compared with pedicled conduits by angiography.METHODS: : Isolated coronary artery bypass graft surgery that used...

Blood pressure regulation during hypotension in two teleost species: differential involvement of the renin-angiotensin and adrenergic systems .

The Journal of experimental biology

Bernier NJ, Mckendry JE, Perry SF.
PMID: 10333513
J Exp Biol. 1999 Jun;202:1677-90.

The stimulatory effects of angiotensin II (Ang II) on catecholamine release and the contributions of the renin-angiotensin system, humoral catecholamines and adrenergic nerves to blood pressure regulation were investigated in rainbow trout (Oncorhynchus mykiss) and American eel (Anguilla rostrata)....

High-Throughput Screening Identified Compounds Sensitizing Tumor Cells to Glucose Starvation in Culture and VEGF Inhibitors In Vivo.

Cancers

Marciano R, Prasad M, Ievy T, Tzadok S, Leprivier G, Elkabets M, Rotblat B.
PMID: 30704052
Cancers (Basel). 2019 Jan 30;11(2). doi: 10.3390/cancers11020156.

Tumor cells utilize glucose to fuel their anabolic needs, including rapid proliferation. However, due to defective vasculature and increased glucose uptake, tumor cells must overcome glucose deprivation. Accordingly, tumor cells depend on cellular pathways promoting survival under such conditions....

Metal- and radical-free aerobic oxidation of heteroaromatic methanes: an efficient synthesis of heteroaromatic aldehydes.

Organic & biomolecular chemistry

Ye R, Cao Y, Xi X, Liu L, Chen T.
PMID: 30946414
Org Biomol Chem. 2019 Apr 24;17(17):4220-4224. doi: 10.1039/c9ob00490d.

A metal-free and radical-free synthesis of heteroaromatic aldehydes was developed through aerobic oxidation of methyl groups in an I2/DMSO/O2 catalytic system. Under the reaction conditions, various functional groups such as methoxy, aldehyde, ester, nitro, amide, and halo (F, Cl,...

Investigation of the acid/base behaviour of the opium alkaloid thebaine in LC-ESI-MS mobile phase by NMR spectroscopy.

Royal Society open science

Carlin MG, Dean JR, Bookham JL, Perry JJB.
PMID: 29134077
R Soc Open Sci. 2017 Oct 04;4(10):170715. doi: 10.1098/rsos.170715. eCollection 2017 Oct.

As part of a research programme to establish an analytical method for the simultaneous detection of the five major opium alkaloids in poppy seeds by liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) it was discovered that the inclusion of thebaine produced...

Nose-to-Brain Delivery of Antiviral Drugs: A Way to Overcome Their Active Efflux?.

Pharmaceutics

Dalpiaz A, Pavan B.
PMID: 29587409
Pharmaceutics. 2018 Mar 26;10(2). doi: 10.3390/pharmaceutics10020039.

Although several viruses can easily infect the central nervous system (CNS), antiviral drugs often show dramatic difficulties in penetrating the brain from the bloodstream since they are substrates of active efflux transporters (AETs). These transporters, located in the physiological...

Successful treatment of nonocclusive mesenteric ischemia after aortic valve replacement with continuous arterial alprostadil infusion: A case report.

International journal of surgery case reports

Ogi K, Sanui M, Iizuka Y, Aomatsu A, Nakashima I, Hamamoto K, Okochi T, Lefor AK.
PMID: 28414997
Int J Surg Case Rep. 2017;35:8-11. doi: 10.1016/j.ijscr.2017.03.037. Epub 2017 Mar 30.

INTRODUCTION: Nonocclusive mesenteric ischemia (NOMI) after surgery has an extremely poor prognosis with a mortality rate of 30-100%. We report a patient with NOMI following aortic valve replacement who failed to improve despite continuous intra-arterial infusion of papaverine, but...

Showing 13 to 24 of 153 entries