Chemical Structure of Gibberellins. Part XI

Hæmatological Technique. Part XI

Gibberellins

What are they? The gibberellins make up a family of small organic compounds derived from a common 20-carbon precursor. They regulate growth and development in plants and their chemical structure superficially resembles that of steroid hormones. So far, more than 100 gibberellins have been identified. Fortunately, any one plant species produces only a few of the known gibberellins. Furthermore, ...

Structure and function of factor XI.

Factor XI (FXI) is the zymogen of an enzyme (FXIa) that contributes to hemostasis by activating factor IX. Although bleeding associated with FXI deficiency is relatively mild, there has been resurgence of interest in FXI because of studies indicating it makes contributions to thrombosis and other processes associated with dysregulated coagulation. FXI is an unusual dimeric protease, with struct...

Stability Of Extemporaneously Prepared Oral Liquid Formulations – Part XI

INTRODUCTION With Part 11 of this series, we have reviewed and summarized 110 drugs in formulations with beyonduse dates established and published in the peer reviewed literature. As there is no national/universal standard for these studies, they sometimes differ in the source of ingredients, methods of preparation, storage containers, temperatures, etc. Generally, it is best to use the pure dr...

Screening of Indian plants for biological activity--Part XI.

Alcoholic extracts of 300 botanically identified plant materials from 275 plant species have been tested for various biological activities including chemotherapeutic and pharmacological screenings. Biological activities have been observed in 111 extracts. Follow-up studies have been carried out in some plants with confirmed activity. The active principles and results of these studies are reported.