Steroidien sivuvaikutukset

STEROIDS is an international research journal devoted to studies on all chemical and biological aspects of steroidal moieties. The journal focuses on both experimental and theoretical studies on the biology, chemistry, biosynthesis, metabolism, molecular biology, physiology and pharmacology of steroids and other molecules that target or regulate steroid receptors. Manuscripts presenting clinical research related to steroids, steroid drug development, comparative endocrinology of steroid hormones, investigations on the mechanism of steroid action and steroid chemistry are all appropriate for submission for peer review. STEROIDS publishes both original research and timely reviews. For details concerning the preparation of manuscripts see Instructions to Authors, which is published in each issue of the journal.

Corticosteroids have been used as drug treatment for some time. Lewis Sarett of Merck & Co. was the first to synthesize cortisone, using a complicated 36-step process that started with deoxycholic acid, which was extracted from ox bile . [43] The low efficiency of converting deoxycholic acid into cortisone led to a cost of US $200 per gram. Russell Marker , at Syntex , discovered a much cheaper and more convenient starting material, diosgenin from wild Mexican yams . His conversion of diosgenin into progesterone by a four-step process now known as Marker degradation was an important step in mass production of all steroidal hormones, including cortisone and chemicals used in hormonal contraception . [44] In 1952, . Peterson and . Murray of Upjohn developed a process that used Rhizopus mold to oxidize progesterone into a compound that was readily converted to cortisone. [45] The ability to cheaply synthesize large quantities of cortisone from the diosgenin in yams resulted in a rapid drop in price to US $6 per gram, falling to $ per gram by 1980. Percy Julian's research also aided progress in the field. [46] The exact nature of cortisone's anti-inflammatory action remained a mystery for years after, however, until the leukocyte adhesion cascade and the role of phospholipase A2 in the production of prostaglandins and leukotrienes was fully understood in the early 1980s.

  • Steroid Stacking
  • Steroid Stacks
  • Novice Steroid Cycles I
  • Novice Steroid Cycles II
  • Intermediate Steroid Cycles I
  • Intermediate Steroid Cycles II
  • Intermediate Steroid Cycles III
  • Advanced Steroid Cycles I
  • Advanced Steroid Cycles II
  • Anabolic Steroid Cycles
  • Beginner Steroid Cycles
  • Advanced Athletic Cycle
  • Athletic Beach Body
  • Advanced Cycle
  • Athletic Cycle
  • Cycle & Stack Additions
  • Female Intermediate Cycle
  • Female Novice Cycle
  • Intermediate Bulking Cycle
  • Intermediate Cycle Transformation
  • Intermediate Cutting Cycle
  • Novice Bulking
  • Novice Cutting
  • Post Cycle Therapy
  • Testosterone Cycle

Steroidien sivuvaikutukset

steroidien sivuvaikutukset

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