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Download or read book Experimental Researches on Specific Therapeutics written by Paul Ehrlich and published by . This book was released on 1908 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author: Institute of Medicine
Publisher: National Academies Press
Published: 2014-02-06
Total Pages: 107
ISBN-13: 0309292492
DOWNLOAD EBOOKImproving and Accelerating Therapeutic Development for Nervous System Disorders is the summary of a workshop convened by the IOM Forum on Neuroscience and Nervous System Disorders to examine opportunities to accelerate early phases of drug development for nervous system drug discovery. Workshop participants discussed challenges in neuroscience research for enabling faster entry of potential treatments into first-in-human trials, explored how new and emerging tools and technologies may improve the efficiency of research, and considered mechanisms to facilitate a more effective and efficient development pipeline. There are several challenges to the current drug development pipeline for nervous system disorders. The fundamental etiology and pathophysiology of many nervous system disorders are unknown and the brain is inaccessible to study, making it difficult to develop accurate models. Patient heterogeneity is high, disease pathology can occur years to decades before becoming clinically apparent, and diagnostic and treatment biomarkers are lacking. In addition, the lack of validated targets, limitations related to the predictive validity of animal models - the extent to which the model predicts clinical efficacy - and regulatory barriers can also impede translation and drug development for nervous system disorders. Improving and Accelerating Therapeutic Development for Nervous System Disorders identifies avenues for moving directly from cellular models to human trials, minimizing the need for animal models to test efficacy, and discusses the potential benefits and risks of such an approach. This report is a timely discussion of opportunities to improve early drug development with a focus toward preclinical trials.
Download or read book Improving and Accelerating Therapeutic Development for Nervous System Disorders written by Institute of Medicine and published by National Academies Press. This book was released on 2014-02-06 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving and Accelerating Therapeutic Development for Nervous System Disorders is the summary of a workshop convened by the IOM Forum on Neuroscience and Nervous System Disorders to examine opportunities to accelerate early phases of drug development for nervous system drug discovery. Workshop participants discussed challenges in neuroscience research for enabling faster entry of potential treatments into first-in-human trials, explored how new and emerging tools and technologies may improve the efficiency of research, and considered mechanisms to facilitate a more effective and efficient development pipeline. There are several challenges to the current drug development pipeline for nervous system disorders. The fundamental etiology and pathophysiology of many nervous system disorders are unknown and the brain is inaccessible to study, making it difficult to develop accurate models. Patient heterogeneity is high, disease pathology can occur years to decades before becoming clinically apparent, and diagnostic and treatment biomarkers are lacking. In addition, the lack of validated targets, limitations related to the predictive validity of animal models - the extent to which the model predicts clinical efficacy - and regulatory barriers can also impede translation and drug development for nervous system disorders. Improving and Accelerating Therapeutic Development for Nervous System Disorders identifies avenues for moving directly from cellular models to human trials, minimizing the need for animal models to test efficacy, and discusses the potential benefits and risks of such an approach. This report is a timely discussion of opportunities to improve early drug development with a focus toward preclinical trials.
Author: Paul Ehrlich
Publisher: Andesite Press
Published: 2015-08-08
Total Pages: 104
ISBN-13: 9781298528728
DOWNLOAD EBOOKThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Experimental Researches on Specific Therapeutics written by Paul Ehrlich and published by Andesite Press. This book was released on 2015-08-08 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Paul Ehrlich
Publisher: Theclassics.Us
Published: 2013-09
Total Pages: 20
ISBN-13: 9781230201412
DOWNLOAD EBOOKThis historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ... altered even after as many as a hundred successive passages. We have up to now produced similar strains resistant to arsenical preparations, to trypan-red and trypan-blue as well as to fuchsin. In my next lecture I shall enter more fully into the importance of these strains. I will here discuss one point only which is connected with to-day's subject, viz., the question as to the origin of the resistant strains. I have made the interesting observation on an arsenic-fast strain which was obtained by several years' treatment with atoxyl, and which was then made still more resistant by means of a very active arsenical preparation (No. 379), which I shall briefly call "Trypocid." This strain is distinguished from normal trypanosomes in that it is no longer influenced by this highly active arsenical preparation. One would have expected that also in test-tube experiments, it would have shown a high resistance towards trypocid. Of course, such an examination could only be carried out by comparing it with other strains of trypanosomes. For obvious reasons I employed the original strain from which this resistant one had been derived, and which had been cultivated in the laboratory. I chose two animals containing about the same number of parasites and mixed their bloods with solutions of trypocid of different degrees of concentration. I now observed the very unexpected phenomenon that in these mixtures the immune strain was far less resistant to higher doses of trypocid than the normal one. Thus whilst concentrations of i in 500 to 1 in 1,000 almost instantaneously killed the immune strain, the control strain retained its motility unimpaired in these concentrations for not less than five minutes. We have here, therefore, one of those striking...
Download or read book Experimental Researches on Specific Therapeutics written by Paul Ehrlich and published by Theclassics.Us. This book was released on 2013-09 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ... altered even after as many as a hundred successive passages. We have up to now produced similar strains resistant to arsenical preparations, to trypan-red and trypan-blue as well as to fuchsin. In my next lecture I shall enter more fully into the importance of these strains. I will here discuss one point only which is connected with to-day's subject, viz., the question as to the origin of the resistant strains. I have made the interesting observation on an arsenic-fast strain which was obtained by several years' treatment with atoxyl, and which was then made still more resistant by means of a very active arsenical preparation (No. 379), which I shall briefly call "Trypocid." This strain is distinguished from normal trypanosomes in that it is no longer influenced by this highly active arsenical preparation. One would have expected that also in test-tube experiments, it would have shown a high resistance towards trypocid. Of course, such an examination could only be carried out by comparing it with other strains of trypanosomes. For obvious reasons I employed the original strain from which this resistant one had been derived, and which had been cultivated in the laboratory. I chose two animals containing about the same number of parasites and mixed their bloods with solutions of trypocid of different degrees of concentration. I now observed the very unexpected phenomenon that in these mixtures the immune strain was far less resistant to higher doses of trypocid than the normal one. Thus whilst concentrations of i in 500 to 1 in 1,000 almost instantaneously killed the immune strain, the control strain retained its motility unimpaired in these concentrations for not less than five minutes. We have here, therefore, one of those striking...
Author: Paul 1854-1915 Ehrlich
Publisher: Wentworth Press
Published: 2016-08-26
Total Pages: 112
ISBN-13: 9781362553328
DOWNLOAD EBOOKThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book EXPERIMENTAL RESEARCHES ON SPE written by Paul 1854-1915 Ehrlich and published by Wentworth Press. This book was released on 2016-08-26 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Institute of Medicine
Publisher: National Academies Press
Published: 2011-04-03
Total Pages: 442
ISBN-13: 0309158060
DOWNLOAD EBOOKRare diseases collectively affect millions of Americans of all ages, but developing drugs and medical devices to prevent, diagnose, and treat these conditions is challenging. The Institute of Medicine (IOM) recommends implementing an integrated national strategy to promote rare diseases research and product development.
Download or read book Rare Diseases and Orphan Products written by Institute of Medicine and published by National Academies Press. This book was released on 2011-04-03 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare diseases collectively affect millions of Americans of all ages, but developing drugs and medical devices to prevent, diagnose, and treat these conditions is challenging. The Institute of Medicine (IOM) recommends implementing an integrated national strategy to promote rare diseases research and product development.
Author: Institute of Medicine
Publisher: National Academies Press
Published: 2001-01-01
Total Pages: 221
ISBN-13: 0309171148
DOWNLOAD EBOOKClinical trials are used to elucidate the most appropriate preventive, diagnostic, or treatment options for individuals with a given medical condition. Perhaps the most essential feature of a clinical trial is that it aims to use results based on a limited sample of research participants to see if the intervention is safe and effective or if it is comparable to a comparison treatment. Sample size is a crucial component of any clinical trial. A trial with a small number of research participants is more prone to variability and carries a considerable risk of failing to demonstrate the effectiveness of a given intervention when one really is present. This may occur in phase I (safety and pharmacologic profiles), II (pilot efficacy evaluation), and III (extensive assessment of safety and efficacy) trials. Although phase I and II studies may have smaller sample sizes, they usually have adequate statistical power, which is the committee's definition of a "large" trial. Sometimes a trial with eight participants may have adequate statistical power, statistical power being the probability of rejecting the null hypothesis when the hypothesis is false. Small Clinical Trials assesses the current methodologies and the appropriate situations for the conduct of clinical trials with small sample sizes. This report assesses the published literature on various strategies such as (1) meta-analysis to combine disparate information from several studies including Bayesian techniques as in the confidence profile method and (2) other alternatives such as assessing therapeutic results in a single treated population (e.g., astronauts) by sequentially measuring whether the intervention is falling above or below a preestablished probability outcome range and meeting predesigned specifications as opposed to incremental improvement.
Download or read book Small Clinical Trials written by Institute of Medicine and published by National Academies Press. This book was released on 2001-01-01 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical trials are used to elucidate the most appropriate preventive, diagnostic, or treatment options for individuals with a given medical condition. Perhaps the most essential feature of a clinical trial is that it aims to use results based on a limited sample of research participants to see if the intervention is safe and effective or if it is comparable to a comparison treatment. Sample size is a crucial component of any clinical trial. A trial with a small number of research participants is more prone to variability and carries a considerable risk of failing to demonstrate the effectiveness of a given intervention when one really is present. This may occur in phase I (safety and pharmacologic profiles), II (pilot efficacy evaluation), and III (extensive assessment of safety and efficacy) trials. Although phase I and II studies may have smaller sample sizes, they usually have adequate statistical power, which is the committee's definition of a "large" trial. Sometimes a trial with eight participants may have adequate statistical power, statistical power being the probability of rejecting the null hypothesis when the hypothesis is false. Small Clinical Trials assesses the current methodologies and the appropriate situations for the conduct of clinical trials with small sample sizes. This report assesses the published literature on various strategies such as (1) meta-analysis to combine disparate information from several studies including Bayesian techniques as in the confidence profile method and (2) other alternatives such as assessing therapeutic results in a single treated population (e.g., astronauts) by sequentially measuring whether the intervention is falling above or below a preestablished probability outcome range and meeting predesigned specifications as opposed to incremental improvement.
Download or read book Experimental researches on specific therapeutics written by Paul Ehrlich and published by . This book was released on 1908 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author: Paul Ehrlich
Publisher:
Published: 2015-08-05
Total Pages: 108
ISBN-13: 9781332316427
DOWNLOAD EBOOKExcerpt from Experimental Researches on Specific Therapeutics: The Garben Lectures for 1907 of the Royal Institute of Public Health It was with very sincere pleasure that I accepted the invitation of the Council of the Royal Institute of Public Health with which they honored me, to deliver the Harben Lectures in 1907, for many relationships both of a scientific and social character have always contributed to render a visit to England one of stimulus and recuperation. The subjects which I chose for my lectures are closely related with those questions) with the study of which I have been connected during the past ten years, viz., the theories of Immunity and Atrepsy, which latter is connected with my researches on Cancer, and the theory of Chemico-therapeutics which I have enunciated in connection with my work on the Trypanosomes. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Experimental Researches on Specific Therapeutics written by Paul Ehrlich and published by . This book was released on 2015-08-05 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Experimental Researches on Specific Therapeutics: The Garben Lectures for 1907 of the Royal Institute of Public Health It was with very sincere pleasure that I accepted the invitation of the Council of the Royal Institute of Public Health with which they honored me, to deliver the Harben Lectures in 1907, for many relationships both of a scientific and social character have always contributed to render a visit to England one of stimulus and recuperation. The subjects which I chose for my lectures are closely related with those questions) with the study of which I have been connected during the past ten years, viz., the theories of Immunity and Atrepsy, which latter is connected with my researches on Cancer, and the theory of Chemico-therapeutics which I have enunciated in connection with my work on the Trypanosomes. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: National Research Council
Publisher: National Academies Press
Published: 2010-12-21
Total Pages: 163
ISBN-13: 030918651X
DOWNLOAD EBOOKRandomized clinical trials are the primary tool for evaluating new medical interventions. Randomization provides for a fair comparison between treatment and control groups, balancing out, on average, distributions of known and unknown factors among the participants. Unfortunately, these studies often lack a substantial percentage of data. This missing data reduces the benefit provided by the randomization and introduces potential biases in the comparison of the treatment groups. Missing data can arise for a variety of reasons, including the inability or unwillingness of participants to meet appointments for evaluation. And in some studies, some or all of data collection ceases when participants discontinue study treatment. Existing guidelines for the design and conduct of clinical trials, and the analysis of the resulting data, provide only limited advice on how to handle missing data. Thus, approaches to the analysis of data with an appreciable amount of missing values tend to be ad hoc and variable. The Prevention and Treatment of Missing Data in Clinical Trials concludes that a more principled approach to design and analysis in the presence of missing data is both needed and possible. Such an approach needs to focus on two critical elements: (1) careful design and conduct to limit the amount and impact of missing data and (2) analysis that makes full use of information on all randomized participants and is based on careful attention to the assumptions about the nature of the missing data underlying estimates of treatment effects. In addition to the highest priority recommendations, the book offers more detailed recommendations on the conduct of clinical trials and techniques for analysis of trial data.
Download or read book The Prevention and Treatment of Missing Data in Clinical Trials written by National Research Council and published by National Academies Press. This book was released on 2010-12-21 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Randomized clinical trials are the primary tool for evaluating new medical interventions. Randomization provides for a fair comparison between treatment and control groups, balancing out, on average, distributions of known and unknown factors among the participants. Unfortunately, these studies often lack a substantial percentage of data. This missing data reduces the benefit provided by the randomization and introduces potential biases in the comparison of the treatment groups. Missing data can arise for a variety of reasons, including the inability or unwillingness of participants to meet appointments for evaluation. And in some studies, some or all of data collection ceases when participants discontinue study treatment. Existing guidelines for the design and conduct of clinical trials, and the analysis of the resulting data, provide only limited advice on how to handle missing data. Thus, approaches to the analysis of data with an appreciable amount of missing values tend to be ad hoc and variable. The Prevention and Treatment of Missing Data in Clinical Trials concludes that a more principled approach to design and analysis in the presence of missing data is both needed and possible. Such an approach needs to focus on two critical elements: (1) careful design and conduct to limit the amount and impact of missing data and (2) analysis that makes full use of information on all randomized participants and is based on careful attention to the assumptions about the nature of the missing data underlying estimates of treatment effects. In addition to the highest priority recommendations, the book offers more detailed recommendations on the conduct of clinical trials and techniques for analysis of trial data.
