Researches on Ergot Fungus. Part XXXVI

Methods for mutation and selection of the ergot fungus.

A new method is described in which the Salkowski reaction is used for the rapid selection of alkaloid-producing mutants of the ergot fungus. This method was used to investigate the influence of a second mutation with N-methyl-N'-nitro-N-nitrosoguanidine (NTG) on various mutants selected by a preliminary NTG mutation of Claviceps sp. strain SD 58. Three groups of mutants were used: high alkaloid...

Notes on Some Remedies. XXXVI. Penicillin

Some Researches on Histones

The histone extracted from calf thymus glands is a complex system of proteins, which can be fractionated by chromatography on carboxymethyl cellulose columns into three principal fractions (1) very lysine-rich, (2) moderately lysine-rich, (3) arginine-rich. When examined by starch gel chromatography each of these gives more than one band. Methods have been devised for further separation of the ...

The COPD Pipeline XXXVI.

Contract Pharma is a publication that reviews, among other things, the pharmaceutical industry annually. Those of us who work in chronic obstructive pulmonary disease (COPD) take an interest in the source of the drugs we use and Contract Pharma brings that information to us. Each year they report the status of the top 25 pharmaceutical companies.1 For each pharma, a report lists the newly appro...

Historical View on Ergot Alkaloids

A short survey of the history of ergot, of the original and, for a long time, only source of ergot alkaloids, is given. Once a dreaded poison, ergot has changed its role over the centuries to become a rich treasure house of valuable pharmaceuticals. In the Middle Ages it was the cause of epidemics of ergotism, which cost tens of thousands of people their lives. Ergot was first mentioned by the ...