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Author: Sheldon J. Segal
Publisher: Springer Science & Business Media
ISBN: 1461328098
Category : Medical
Languages : en
Pages : 268
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Book Description
The search for a reversible male contraceptive has centered upon the suppression of sperm production or sperm motility. Gossypol, a natural substance extracted from the cotton plant, appears to cause both of these effects. Its ability to reduce spermatogenesis in men is undeniable and has been demonstrated in both large studies in China and a smaller confirmatory study in Brazil. These investiga tions have revealed the remarkable fact that with gossypol, it is possible to separate an effect on the testis' gamete-producing function from an effect on its hormone-producing function. Thus, it is possible to maintain normal testosterone levels and libido while sperm counts (and motility) fall. Because of this unique and important action, gossypol warrants the fullest possible evaluation as a potential male contraceptive. Sheldon J. Segal vii ACKNOWLEDGMENT Lynn C. Landman played a major role in this publication by skillfully editing the manuscripts which were submitted for inclusion in this volume. Janet O'Connell added her efforts in editing, assembling texts and figures and handling final details required for publication. I thank these talented colleagues for their invaluable contributions.
Author: Sheldon J. Segal
Publisher: Springer Science & Business Media
ISBN: 1461328098
Category : Medical
Languages : en
Pages : 268
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Book Description
The search for a reversible male contraceptive has centered upon the suppression of sperm production or sperm motility. Gossypol, a natural substance extracted from the cotton plant, appears to cause both of these effects. Its ability to reduce spermatogenesis in men is undeniable and has been demonstrated in both large studies in China and a smaller confirmatory study in Brazil. These investiga tions have revealed the remarkable fact that with gossypol, it is possible to separate an effect on the testis' gamete-producing function from an effect on its hormone-producing function. Thus, it is possible to maintain normal testosterone levels and libido while sperm counts (and motility) fall. Because of this unique and important action, gossypol warrants the fullest possible evaluation as a potential male contraceptive. Sheldon J. Segal vii ACKNOWLEDGMENT Lynn C. Landman played a major role in this publication by skillfully editing the manuscripts which were submitted for inclusion in this volume. Janet O'Connell added her efforts in editing, assembling texts and figures and handling final details required for publication. I thank these talented colleagues for their invaluable contributions.
Author: Peter R. Cheeke
Publisher: CRC Press
ISBN: 9780849369933
Category : Medical
Languages : en
Pages : 246
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Book Description
This comprehensive treatise offers an in-depth discussion of natural toxicants in plants, emphasizing their effects as defenses against herbivory. Coevolution of plants and her-bivores are covered with a detailed treatment of toxicant metabolism and systemic effects in mammalian tissues. Con-sideration of the economic importance of plant toxins, modi-fication by plant breeding, management of toxico-sis, and toxicant problems in various geographic areas are in-cluded. Each volume offers an extensive description of chemistry, biosynthesis, analysis, distribution in plants, metabolism in mam-mals and insects, and practical problems in humans and livestock.
Author: Thomas H. Applewhite
Publisher: The American Oil Chemists Society
ISBN: 9780935315455
Category : Technology & Engineering
Languages : en
Pages : 522
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Book Description
Discusses current topics related to the technology and utilization of oilseeds and their products, such as managing an enterprise in a market economy; political and environmental challenges of the 1990s; achieving total quality; nutrition; oilseed harvesting and oil/meal separation; processing of vegetable oils; processing vegetable protein products; oilseeds in animal feeds, etc.
Author: David R. Erickson
Publisher: The American Oil Chemists Society
ISBN: 9780935315301
Category : Technology & Engineering
Languages : en
Pages : 464
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Book Description
Author: J. P. Felix D'Mello
Publisher: CRC Press
ISBN: 1000086887
Category : Medical
Languages : en
Pages : 369
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Book Description
First published in 1997. Natural toxicants are the subject of research throughout the world, and they are used for many purposes. The Handbook of Plant and Fungal Toxicants presents a wide range of compounds and considers how they relate to food safety, therapeutic purposes in medicine, and uses in breeding plants for enhanced resistance to insects and disease. Alkaloids, both from plant and fungal sources, are emphasized. Also covered are a variety of toxicants and phytochemicals including: bracken fern poisons polyphenolics gossypol flavones isoflavones pyrimidine glycosides fruit and vegetable allergens linear furanocoumarins photosensitizing agents nitrates oxalates Pinus ponderosa toxicants The text stresses the positive aspects of plant secondary compounds and presents examples of beneficial attributes in the context of environmental protection and human health. An international authorship addresses the global diversity and ecological distribution of plant and fungal toxicants. This handbook is ideal for senior-level college students and post-graduate students studying animal science, toxicology, and pharmaceutical sciences.
Author: Ramesh C Gupta
Publisher: Elsevier
ISBN: 0080481604
Category : Medical
Languages : en
Pages : 1233
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Book Description
Veterinary Toxicology, 2nd edition is a unique single reference that teaches the basic principles of veterinary toxicology and builds upon these principles to offer an essential clinical resource for those practicing in the field. This reference book is thoroughly updated with new chapters and the latest coverage of topics that are essential to research veterinary toxicologists, students, professors, clinicians and environmentalists. Key areas include melamine and cyanuric acid, toxicogenomics, veterinary medical geology, toxic gases, toxicity and safety evaluation of new veterinary pharmaceuticals and much more. The 2nd edition of this popular book represents the collective wisdom of leading contributors worldwide and continues to fill an undeniable need in the literature relating to veterinary toxicology. - New chapters covering important and timely topics such as melamine and cyanuric acid, toxicogenomics, toxic gases and veterinary medical geology - Expanded look at international topics, such as epidemiology of animal poisonings, regulatory guidelines and poisonous plants in Europe - Heavily contributed book with chapters written by qualified and well-experienced authorities across all areas of veterinary toxicology - Problem solving strategies are offered for treatment as well as in-depth knowledge of the basic mechanisms of veterinary toxicology
Author: Nuhad Joseph Daghir
Publisher: CABI
ISBN: 1845934172
Category : Business & Economics
Languages : en
Pages : 403
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Book Description
The poultry industry continues to expand in the warm regions of the world at a much faster rate than in temperate zones. Not only can it be quickly and easily developed in these hot climates but poultry meat and eggs can serve as important sources of animal protein in those areas of the world that have protein insufficiency. Fully revised and updated, this new edition describes how the detrimental effects of heat stress can be reduced through the manipulation of housing, breeding, nutrition and management, and includes new contributions on controlled-environment housing, waterfowl, and breeding fast-growing broilers.
Author: Leon Brimer
Publisher: CABI
ISBN: 9781845937874
Category : Medical
Languages : en
Pages : 295
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Book Description
Preventing contamination with problematic chemical compounds in food, from 'plant to plate and meat to meal', begins with an understanding of the food production and processing chain as well as relevant issues in toxicology and risk management. The diversity in origin and structure of unwanted chemical substances means that combating chemical contaminants in food needs a good understanding of science in a number of disciplines as well as the regulatory processes designed to minimise risks to a world population increasingly exposed through international trade. This book covers the basic and applied science needed to understand, analyse and take professional action on problems and questions concerning chemical food safety, from acute to long lasting problems that call for interventions on a local, regional, national or international level. Risk assessment is explained in the context of targeted future risk management and risk communication. The book follows problematic chemical compounds through production and processing of foods of plant, fungal, algal or animal origin, including oral exposure and intestinal absorption of such contaminants. The aim is to reach a harmonized level of understanding of all aspects of chemical food safety, so as to make the graduated student ready for work in all sectors related to food and its production.
Author: Gordon McL. Dryden
Publisher: CABI
ISBN: 1780640560
Category :
Languages : en
Pages : 316
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Book Description
Author:
Publisher:
ISBN:
Category : Chemistry, Technical
Languages : en
Pages : 1444
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Book Description
