scholarly journals A STUDY OF SIDE CHAIN OXIDATIONS WITH POTASSIUM PERMANGANATE.1

1919 ◽  
Vol 41 (10) ◽  
pp. 1559-1581 ◽  
Author(s):  
Lucius A. Bigelow
Keyword(s):  
Potassium Permanganate ◽  
Side Chain

scholarly journals A STUDY OF SIDE-CHAIN OXIDATIONS WITH POTASSIUM PERMANGANATE. II

1922 ◽  
Vol 44 (9) ◽  
pp. [2010]-2019
Author(s):  
Lucius A. Bigelow
Keyword(s):  
Potassium Permanganate ◽  
Side Chain

A potassium permanganate fixative for membranes in sections

1990 ◽  
Vol 48 (3) ◽  
pp. 722-723
Author(s):  
Jindan Song
Keyword(s):  
Potassium Permanganate ◽  
Cultured Cells ◽  
Calf Serum ◽  
Trisodium Citrate ◽  
Membrane System ◽  
Adenocarcinoma Cell Line ◽  
Mouse Embryo Fibroblast ◽  
African Green Monkey Kidney ◽  
Adenocarcinoma Cell ◽  
Green Monkey

Potassium permanganate has been used as a fixative for the botanical specimen and membrane system in thin section by Glauert (1975). A new potassium permanganate fixative ( Trisodium citrate 60mM, Potassium chloride 25mM, Magnesium chloride 35mM, and Potassium permanganate 125mM ) for localizing membranous system in whole_mount cultured cells with standard trasmission electron microscopy and phase_contrast microscopy has been developed). Here, we report that using this new potassium permanganate fixative for membranous system in sections.Cultured cells, CV_1 (African green monkey kidney epithelial cells), Balb/c 3T3 ( Mouse embryo fibroblast ) and MCF_7 (Human adenocarcinoma cell line) were used for this study. All cells were grown on 35mm plastic dishes in DME medium containing 5% calf serum at 37 c with 100% humidity and 5% CO2. Using the potassium permanganate fixative to fix the cells for about 7 minutes. After fixation, the cells were dehydrated in a graded series of ethanol.

Etching of LLDPE and LLDPE/HDPE blends

1996 ◽  
Vol 54 ◽  
pp. 200-201
Author(s):  
M. S. Bischel ◽  
J. M. Schultz
Keyword(s):  
Potassium Permanganate ◽  
Morphological Features ◽  
Narrow Fraction ◽  
Potassium Permanganate Solution ◽  
Commercial Applications ◽  
Microscopy Techniques

Despite its rapidly growing use in commercial applications, the morphology of LLDPE and its blends has not been thoroughly studied by microscopy techniques. As part of a study to examine the morphology of a LLDPE narrow fraction and its blends with HDPE via SEM, TEM and AFM, an appropriate etchant is required. However, no satisfactory recipes could be found in the literature. Mirabella used n-heptane, a solvent for LLDPE, as an etchant to reveal certain morphological features in the SEM, including faint banding in spherulites. A 1992 paper by Bassett included a TEM micrograph of an axialite of LLDPE, etched in a potassium permanganate solution, but no details were given.Attempts to use n-heptane, at 60°C, as an etchant were unsuccessful: depending upon thickness, samples swelled and increased in diameter by 5-10% or more within 15 minutes. Attempts to use the standard 3.5% potassium permanganate solution for HDPE were also unsuccessful: the LLDPE was severely overetched. Weaker solutions were also too severe.

alumina-supported potassium permanganate: a mild, inexpensive and efficient reagent for solvent-free deprotection of thioacetals

2003 ◽  
Vol 26 (2) ◽  
pp. 1-1
Author(s):  
ABDOL HAJIPOUR ◽  
SHADPOUR MALLAKPOUR
Keyword(s):  
Potassium Permanganate ◽  
Solvent Free ◽  
Efficient Reagent

Electroluminescent properties of side-chain naphthalimide-derivated polymers

1998 ◽  
Vol 95 (6) ◽  
pp. 1351-1354 ◽  
Author(s):  
C.-M. Bouché ◽  
P. Le Barny ◽  
H. Facoetti ◽  
F. Soyer ◽  
P. Robin
Keyword(s):  
Side Chain

Evidence for Impaired Hepatic Vitamin K1 Metabolism in Patients Treated with N-Methyl-Thiotetrazole Cephalosporins

1984 ◽  
Vol 51 (03) ◽  
pp. 358-361 ◽  
Author(s):  
H Bechtold ◽  
K Andrassy ◽  
E Jähnchen ◽  
J Koderisch ◽  
H Koderisch ◽  
...  
Keyword(s):  
Protein C ◽  
Oral Intake ◽  
Bleeding Complications ◽  
Side Chain ◽  
Acute Administration ◽  
Vitamin K1 ◽  
New Class ◽  
Parenteral Alimentation ◽  
Hepatocellular Regeneration ◽  
Echis Carinatus

SummaryIn 8 patients on no oral intake and with parenteral alimentation, administration of cephalosporins with N-methyl-thiotetrazole side chain (moxalactam, cefamandole), was associated with prolongation of prothrombin time, appearance in the circulation of descarboxy-prothrombin (counter immunoelectrophoresis and echis carinatus assay) and diminution of protein C. Acute administration of 10 mg vitamin Ki was followed by the transient appearance of vitamin K1 2,3-epoxide, indicating an impaired hepatocellular regeneration of vitamin K1 from the epoxide. Impaired hepatic vitamin K1 metabolism, tentatively ascribed to the N-methyl-thiotetrazole group, is one (but possibly not the only) cause of bleeding complications and depression of vitamin K1dependent procoagulants in patients treated with the new class of cephalosporins.

METABOLISM OF 17α-HYDROXYPROGESTERONE-4-14C-17α-CAPROATE BY HOMOGENATES OF RAT LIVER AND HUMAN PLACENTA

1961 ◽  
Vol 36 (4) ◽  
pp. 511-519 ◽  
Author(s):  
Margaret Wiener ◽  
Charles I. Lupa ◽  
E. Jürgen Plotz
Keyword(s):  
Rat Liver ◽  
Human Placenta ◽  
Steric Hindrance ◽  
Placental Tissue ◽  
Caproic Acid ◽  
Major Product ◽  
Side Chain ◽  
Anaerobic Conditions ◽  
Prolonged Action ◽  
Long Acting

ABSTRACT 17α-hydroxyprogesterone-4-14C-17α-caproate (HPC), a long-acting progestational agent, was incubated with homogenates of rat liver and human placenta. The rat liver was found to reduce Ring A of HPC under anaerobic conditions to form allopregnane-3β,17α-diol-20-one-17α-caproate and pregnane-3β,17α-diol-20-one-17α-caproate, the allopregnane isomer being the major product. The caproic acid ester was neither removed nor altered during the incubation. Placental tissue did not attack HPC under conditions where the 20-ketone of progesterone was reduced. It is postulated that this absence of attack on the side chain is due to steric hindrance from the caproate ester, and that this may account for the prolonged action of HPC.

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