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Elsevier

Libros en Farmacología Gastrointestinal

  • Standardizing Pharmacology: Assays and Hormones

    Discoveries in Pharmacology, Volume 2
    • 2 Edición
    • Michael J. Parnham + 2 más
    • Inglés
    Standardizing Pharmacology: Assays and Hormones, Volume Two in the Discoveries in Pharmacology series, presents selected articles from historic discoveries that are enhanced with commentary from contemporary scholars who present discussions on the importance of each chapter, along with an updated bibliography on the subject and contributions from a Nobel Prize winner and other pioneers in pharmacology. Academic and industry researchers in pharmacology and medicine, as well as advanced students will find this series a useful teaching tool and launch to new discoveries. Sections cover key discoveries in receptor theory, pharmacological methods and the development of hormone therapy, including J. Parascandola on the development of receptor theory, R.S. Yalow on radioimmunoassay, M. van Rossum and J.T L.A. Hurkmans on bioassays, M. Tausk on androgen therapy and C. Djerassi on oral contraceptives, with commentaries from experts such as T. Hökfelt and V.C. Jordan.

  • Cystoscopy and Urography

    • 2 Edición
    • Jas. B. MacAlpine
    • Inglés
    Cystoscopy and Urography, Second Edition presents the significant advances in instrumentation and application of cytoscopy and urography. This book is organized into two parts encompassing 27 chapters. This edition adds six additional chapters from the first edition; three of these concern urography. The three other chapters survey pelvic resorption, excretion urography, and pyeloscopy. Other chapters deal with fistula of the bladder, funnel-neck deformity of the bladder, and congenital abnormalities of the kidney and ureter. This book also covers the topics of renal tuberculosis, purpura, and a description of endoscopic prostatic surgery. This book is of value to surgeons and urologists.

  • Diagnostic Atlas of Gastroesophageal Reflux Disease

    A New Histology-based Method
    • 1 Edición
    • Parakrama T. Chandrasoma
    • Inglés
    Gastroesophageal reflux is one of the most common maladies of mankind. Approximately 40% of the adult population of the USA suffers from significant heartburn and the numerous antacids advertised incessantly on national television represents a $8 billion per year drug market. The ability to control acid secretion with the increasingly effective acid-suppressive agents such as the H2 blockers (pepcid, zantac) and proton pump inhibitors (nexium, prevacid) has given physicians an excellent method of treating the symptoms of acid reflux.Unfortunately... this has not eradicated reflux disease. It has just changed its nature. While heartburn, ulceration and strictures have become rare, reflux-induced adenocarcinoma of the esophagus is becoming increasingly common. Adenocarcinoma of the esophagus and gastric cardia is now the most rapidly increasing cancer type in the Western world.At present, there is no histologic test that has any practical value in the diagnosis of reflux disease. The only histologic diagnostic criteria are related to changes in the squamous epithelium which are too insensitive and nonspecific for effective patient management. It is widely recognized that columnar metaplasia of the esophagus (manifest histologically as cardiac, oxyntocardiac and intestinal epithelia) is caused by reflux. However, except for intestinal metaplasia, which is diagnostic for Barrett esophagus, these columnar epithelia are not used to diagnose reflux disease in biopsies. The reason for this is that these epithelial types are indistinguishable from "normal" "gastric" cardiac mucosa. In standard histology texts, this "normal gastric cardia" is 2-3 cm long.In the mid-1990s, Dr. Chandrasoma and his team at USC produced autopsy data suggesting that cardiac and oxyntocardiac mucosa is normally absent from this region and that their presence in biopsies was histologic evidence of reflux disease. From this data, they determined that the presence of cardiac mucosa was a pathologic entity caused by reflux and could therefore be used as a highly specific and sensitive diagnostic criterion for the histologic diagnosis of reflux disease. They call this entity "reflux carditis". In addition, the length of these metaplastic columnar epithelia in the esophagus was an accurate measure of the severity of reflux disease in a given patient.At present, there is some controversy over whether cardiac mucosa is totally absent or present normally to the extent of 0-4 mm. While this should not be a deterrent to changing criteria which are dependent on there normally being 20-30 cm of cardiac mucosa, there has been little mainstream attempt to change existing endoscopic and pathologic diagnostic criteria in the mainstream of either gastroenterology or pathology. The ATLAS will be the source of easily digestible practical information for pathologists faced with biopsies from this region. It will also guide gastroenterologists as they biopsy these patients.