Deficiencies in sperm function are usually the result of spermatogenic defects. Spermatogenesis is a biologically complex and essential process during which spermatogonia undergo meiotic recombination, reduction of the genome to a haploid state, and extensive cellular modifications that result in a motile cell capable of traversing the female reproductive tract, withstanding various potential assaults to viability, and finally successfully fertilizing a mature oocyte to give rise to an embryo. Defects in any step of spermatogenesis or spermatogenesis can lead to male infertility, a disease that affects approximately 5-7% of the population."Spermiogenesis and Spermatogenesis: Methods and Protocols"details protocols used in the study of spermatogenesis, clinical analytical protocols, and basic techniques used in clinical andrology laboratories, such as obtaining accurate results for a sperm count, and advanced procedures, such as genome-wide genetic study tools and evaluation of nuclear proteins.Written in the successful"Methods in Molecular Biology "series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols, and notes on troubleshooting and avoiding known pitfalls.

Authoritative and easily accessible, "Spermiogenesis and Spermatogenesis: Methods and Protocols"isunique in its breadth, and will be a useful reference for clinicians and researchers alike."

Perinatal and Developmental Epigenetics, Volume 32, a new volume in the Translational Epigenetics series, provides a thorough overview of epigenetics in the early developmental and perinatal stages, illuminating pathways for drug discovery and clinical advances. Here, over 25 international researchers examine recent steps forward in our understanding of epigenetic programming during perinatal and early development. The book opens with an in-depth introduction to known and newly discovered epigenetic marks and how they regulate various cellular processes. Later sections examine various prenatal and perinatal environmental experiences and their ability to derail the normal developmental trajectory via epigenetic reprogramming. Insights and suggestions for future research illuminate approaches for identifying individual disease susceptibility. Concluding chapters highlight preventative and targeted therapeutic pathways to improve quality of life into adulthood.

Plant Stress Mitigators: Types, Techniques and Functions presents a detailed contextual discussion of various stressors on plant health and yield, with accompanying insights into options for limiting impacts using chemical elicitors, bio-stimulants, breeding techniques and agronomical techniques such as seed priming, cold plasma treatment, and nanotechnology, amongst others. The book explores the various action mechanisms for enhancing plant growth and stress tolerance capacity, including nutrient solubilizing and mobilizing, biocontrol activity against plant pathogens, phytohormone production, soil conditioners, and many more unrevealed mechanisms. This book combines research, methods, opinion, perspectives and reviews, dissecting the stress alleviation action of different plant stress mitigators on crops grown under optimal and sub-optimal growing conditions (abiotic and biotic stresses).

Neglected and Underutilized Crops: Future Smart Food explores future food crops with climate resilience potential. Sections cover their botany, nutritional significance, global distribution, production technology, and tolerance to biotic and abiotic stresses of neglected and underutilized crops. By simply changing species in a crop rotation system, the cycle of some pests and diseases is disrupted and probabilities of infestations are reduced. Finally, the book provides case studies that highlight where the adaptation of crops to local environments, especially with regard to climate change, have been successful. These crops can help make agricultural production systems more resilient to climate change. Although a few books on neglected and underutilized crops are available, this comprehensive book covers the full scope of crop husbandry, nutritional significance and global distribution.

RNA abundance analysis is one of the most important approaches for gene expression studies in the field of molecular biology. In "RNA Abundance Analysis: Methods and Protocols," expert researchers cover a wide range of techniques on RNA extraction, detection, quantification, visualization, and genome-wide profiling, from conventional methods to state-of-the-art high throughput approaches. This volume includes detailed techniques to examine mRNAs, small non-coding RNAs, protein-associated small RNAs, sulfur-containing RNAs, viral and satellite RNAs, RNA isoforms, and alternatively spliced RNA variants from various organisms, as well as key discussions of computational data processing for genome-wide datasets. Written for the highly successful "Methods in Molecular Biology" series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls.

Essential and easy to use, "RNA Abundance Analysis: Methods and Protocols" provides a comprehensive set of techniques and methods on isolating and analyzing mRNAs, small RNAs, and modified RNAs, which can assist you in your gene expression studies."

Updating and building upon previous editions, "Hematopoietic Stem Cell Protocols, Third Edition" provides up-to-date protocols from leading stem cell researchers. This in-depth volume presents a clear view of the landscape of assays available to the stem cell researcher working in the growing hematopoietic stem cell (HSC) field. A robust and active field, it is supported by an abundance of innovative mouse models and molecular tools for analysis of phenotypes and functions in mouse and human cells. Understanding more about hematopoietic stem cell biology is integral if these versatile cells are to be applied effectively to treat and cure a wide range of blood diseases.An introductory chapter puts the major contributions of the book into the proper perspective. Written in the successful "Methods in Molecular Biology" series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols, and notes on troubleshooting and avoiding known pitfalls.

Essential for the laboratory-based researcher, "Hematopoietic Stem Cell Protocols, Third Edition" is a much needed technical resource in the critically important field of hematopoietic stem cell investigation."

Chromatin Readers in Health and Disease, Volume 35, a new release in the Translational Epigenetics series, gathers and makes actionable our current understanding of how chromatin readers regulate access to genetic information, and how their aberrant regulation can contribute to human pathologies. Chromatin readers discussed include 14-3-3 Dinshaw, ADD, Ankyrin, BAH, BET, BIR, BRCT, bromodomains and Kac readers, chromodomains and chromobarrel readers, citrullination readers, macrodomains and poly-ADP-ribose readers, MBT, PHD and double PHD, PWWP, SUMO (H4K12) readers, Tudor and TTD, UDR and ubiquitin, WD40, YEATS (crotonyl reader), MBD, SRA, and Methyl-RNA readers. In the book, more than a dozen leaders in the field examine a range of protein readers, their relationship to human disease, and the early therapeutics that act as chromatin signaling factors to treat cancers and Huntington's disease, among other disorders.

During the last decade, modern technologies have made a revolutionary change in developmental biology. The molecular and cellular processes in live embryos can now be visualized thanks to technologies using fluorescent proteins. The whole genome information of a wide range of animal species has now become available, confirming the common principles that operate in every species. These and other advances in our understanding of the developmental processes during embryogenesis and tissue regeneration have put forward new principles. Those new principles will also be important in the stem cell biology, branched from developmental biology, in order to generate a particular tissue by manipulating stem cells. This book is planned to introduce these new principles to readers who are working in developmental biology and/or stem cell biology fields, with an emphasis on genetic and cellular processes.

Microarrays for simultaneous measurement of redundancy of RNA species are used in fundamental biology as well as in medical research. Statistically, a microarray may be considered as an observation of very high dimensionality equal to the number of expression levels measured on it. In "Statistical Methods for Microarray Data Analysis: Methods and Protocols, " expert researchers in the field detail many methods and techniques used to study microarrays, guiding the reader from microarray technology to statistical problems of specific multivariate data analysis. Written in the highly successful "Methods in Molecular Biology " series format, the chapters include the kind of detailed description and implementation advice that is crucial for getting optimal results in the laboratory.

Thorough and intuitive, "Statistical Methods for Microarray Data Analysis: ""Methods and Protocols "aids scientists in continuing to study microarrays and the most current statistical methods.

The Genetical Theory of Natural Selection by R.A. Fisher (1930) dictated that sexual dimorphisms may depend upon a single medelian factor. This could be true for some species but his suggestion could not take off the ground as gender in Drosophila is determined by the number of X chromosomes. Technical advances in molecular biology have revived the initial thinking of Fisher and dictate that TDF or SRY genes in humans or Tdy in mice are sex determining genes. The fortuitous findings of XX males and XY female, which are generally termed sex reversal phenomenon, are quite bewildering traits that have caused much amazement concerning the pairing mechanism(s) of the pseudoautosomal regions of human X and Y chromosomes at meiosis. These findings have opened new avenues to explore further the genetic basis of sex determination at the single gene level.
The aim of the fourth volume, titled Genetics of Sex Determination is to reflect on the latest advances and future investigative directions, encompassing 10 chapters. Commissioned several distinguished scientists, all pre-eminent authorities in each field to shed their thoughts concisely but epitomise their chapters with an extended bibliography. Obviously, during the past 60 years, the metoric advances are voluminous and to cover every account of genes, chromosomes, and sex in a single volume format would be a herculean task. Therefore, a few specific topics are chosen, which may be of great interest to scientists and clinicians. The seasoned scientists who love to inquire about the role of genes in sex determination should find the original work of these notable contributors very enlightening. This volume is intended for advanced students who want to keep abreast as well as for those who indulge in the search for genes of sex determination.

In recent years, a number of groundbreaking structural and mechanistic studies deepened our understanding of helicase mechanisms and established new approaches for their analyses. Many fundamental mechanistic questions ranging from the mechanism of force generation, mechanochemical coupling to distinct mechanisms by which the same enzyme translocates on DNA removing obstacles, unwinds DNA and/or remodels nucleoprotein complexes, however, remain to be answered. It is even less understood how the helicase motors are incorporated into a wide range of genome maintenance and repair machines. The field has reached a stage when the studies of molecular mechanisms and basic biology of helicases can and shall be integrated with the studies of development, cancer and longevity. The objective of this book is to provide the first systematic overview of structure, function and regulation of DNA helicases and related molecular motors. By integrating the knowledge obtained through the diverse technical approaches ranging from single-molecule biophysics to cellular and molecular biological studies the editors aim to provide a unified view on how helicases function in the cell, are regulated in response to different cellular stresses and are integrated into large macromolecular assemblies to form a complex and adaptive living system.

Every year there are new and exciting developments in assisted human reproduction, but how much do we really know about the underlying causes of infertility? This volume explores recent progress in the understanding of the genetics of spermatogenesis and male infertility. Topics include fundamental advances and current problems in the development and function of the testis, an outline of clinical findings in male infertility and an overview of the role of the Y chromosome in male fertility. Comprehensive critiques of posttranscriptional control during spermatogenesis, mammalian meiotic sterility, and comparative genetics of human spermatogenesis from the perspective of yeast, "Drosophila" and mice provide a global overview of the field.

Quantitative Real-Time PCR: Methods and Protocols focuses on different applications of qPCR ranging from microbiological detections (both viral and bacterial) to pathological applications. Several chapters deal with quality issues which regard the quality of starting material, the knowledge of the minimal information required to both perform an assay and to set the experimental plan, while the others focus on translational medicine applications that are ordered following an approximate logical order of their medical application. The last part of the book gives you an idea of an emerging digital PCR technique that is a unique qPCR approach for measuring nucleic acid, particularly suited for low level detection and to develop non-invasive diagnosis. Written for the Methods in Molecular Biology series, most chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, laboratory protocols and tips on troubleshooting and avoiding known pitfalls. Practical and authoritative, Quantitative Real-Time PCR: Methods and Protocols aims to aid researchers seeking to devise new qPCR-based approaches related to his or her area of investigation.

This book presents some of the most recent, novel and fascinating examples of transcriptional and posttranscriptional control of gene expression in plants and, where appropriate, provides comparison to notable examples of animal gene regulation.

Although they comprise one of the three fundamental branches of life, it was only the last decade that Archaea were formally recognized as a group alongside Eukaryotes and Bacteria. Bacteria-like in that they are single celled organisms that lack a nucleus and intracellular organelles, the Arachaea also share a large gene set typical of eukaryotes, for making and repairing DNA, RNA and protien. More surprisingly, they only inhabit environments typical of the extremes of early earth--hot springs, thermal ocean vents, saline lake, or oxygen deficient sediments. A breakpoint on the common evolutionary path, it is evident that the Archaea diverged early in the history of life, establishing thier importance in evolutionary sciences. "Archaea: Ancient Microbes, Extreme Environments, and the Origin of Life" tells this evolving story, furthering our understanding of the microbe commonalities, and providing for evolutionary justification in the use of archaea as mechanistic model systems.
Key Features
* Provides a unique and current summary of common subcellular mechanisms in archaea and eukaryotes
* Emphasizes the use of genomics to provide a biological context for understanding archaea
* Contrasts evolutionary studies on the fossil record with those on molecular phylogeny
* Includes extensive tables, graphs, images, drawings and other illustrations
* Simplifies the interdisciplinary challenge necessary to understand the significance of archaea

This volume provides techniques on recent developments that use RNA scaffolds as molecular tools. RNA Scaffolds: Methods and Protocols guides readers through methods on various domains as molecular biology, nanotechnologies, and structural biology. Written for the Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols and tips on troubleshooting and avoiding known pitfalls.Practical and authoritative, RNA Scaffolds: Methods and Protocols will serve as an invaluable reference for those interested in further study into this fascinating field.

This book reviews a novel and exciting field of cellular and molecular biology called epitranscriptomics, which focuses on changes in an organism's cells resulting from the posttranscriptional modification of cellular RNA. RNA-binding proteins (RBPs) play a crucial role in these posttranscriptional modifications and also support several cellular processes necessary for maintaining RNA homeostasis. Exploring the mechanisms underlying RNA modifications and RBP function is an emerging area of biomedical research, taking the study of gene regulation a step beyond epigenetics. This book reveals that the RNA molecule is not just an information-carrying molecule with some secondary structures. Accordingly, how RNA is modified, regulated, packaged, and controlled is an important aspect. Leading experts address questions such as where the over 170 distinct posttranscriptional RNA modifications are located on the genome, what percentage of mRNAs and noncoding RNAs these modifications include, and how an RNA modification impacts a person's biology. In closing, the book reviews the role of RNA modifications and RBPs in a variety of diseases and their pathogenesis. Addressing some of the most exciting challenges in epitranscriptomics, this book provides a valuable and engaging resource for researchers in academia and industry studying the phenomena of RNA modification.

A one-stop resource that provides the most frequently needed information on the human genome What are the genes that manke-up the human genome, what do the genes do when they are acting properly, and what happens when these genes are damaged? Designed for today's reader who demands quick answers to a wide range of questions, The Human Genome Sourcebook is intended to offer the non-specialist an accessible but detailed guide to the genome. The information it provides is given context: namely, the basic scientific principles of genome research, the new knowledge unearthed or created by this research, and the social and ethical implications of this knowledge. The Human Genome Sourcebook is organized in several sections to simplify the location of pertinent information: an extensive section that comprises an in-depth catalogue of human genes listed according to the roles they play in life; a chapter that relates genetic diseases to the specific genes that cause the disease; a detailed glossary giving readers a deeper understanding of genetic terms and concepts; an overview or roadmap of the physical layout of the genome sections. provides both information as well as the tools necessary to access that information.. Provides in-depth information on the relationships between our genes and all aspects of our daily lives. Addresses health issues that are related to genetic abnormalities

This compendium presents some of the major applications of neutron scattering techniques to problems in biology. It is a record of the papers presented at the Neutrons in Biology Conference, the third in an occasional series held to highlight progress in the field and to provide a focus for future direction. The strength ofthe neutron scattering technique remains principally in the manipula tion of scattering density through hydrogen and deuterium atoms. The development ofad vanced detectors, innovative instrument and beamline components, and sophisticated data acquisition systems through the 1970s and early 1980s provided a sound foundation for the technique. With continued development, some of the exotic and expensive equipment has become affordable by the medium-sized facilities, thereby broadening the user base considerably. Despite problems with the major neutron sources in the late 1980s and early 1990s, some spectacular results have been achieved. Whilst the high and medium flux beam reac tors will continue to make a major impact in the field, the results from the first experi ments, and the planned developments on spallation neutron sources, clearly indicate that the technique has enormous potential.

In Human Cloning a panel of distinguished philosophers, medical ethicists, religious thinkers, and social critics tackle the thorny problems raised by the now real possibility of human cloning. In their wide ranging reviews, the distinguished contributors critically examine the major arguments for and against human cloning, probe the implications of such a procedure for society, and critically evaluate the "Report and Recommendations of the National Bioethics Advisory Commission." The debate includes both religious and secular arguments, as well as an outline of the history of the cloning debate and a discussion of human cloning's impact on our sense of self and our beliefs about the meaning of life.

Genetic linkage maps are an increasingly important tool in both fundamental and applied research, enabling the study and deployment of genes that determine important biological traits. This concise introduction to genetic mapping in species with disomic inheritance enables life science graduate students and researchers to use mapping software to produce more reliable results. After a brief refresher on meiosis and genetic recombination, the steps in the map construction procedure are described, with explanations of the computations involved. The emphasis throughout is on the practical application of the methods described; detailed mathematical formulae are avoided and exercises are included to help readers consolidate their understanding. A chapter on recognising and solving problems provides valuable guidance for dealing with real-life situations. An extensive chapter dedicated to the more complex situation of outbreeding species offers a unique insight into the approach required for many economically important and model species, both plants and animals.

A compendium of readily reproducible and novel methods to manipulate DNA viruses and characterize their varied biological properties. The authors emphasize techniques for viral detection and genetics, but also include methods for structure determination, gene expression, replication, pathogenesis, complex cellular models, recombinant genetics, and computational/systems approaches. Wide-ranging and highly practical, DNA Viruses: Methods and Protocols will stimulate new directions in virology research with its novel strategies for engineering viral vectors in gene therapy, and its advanced approaches for detecting viruses in human disease.

Cells in the developing embryo depend on signals from the extracellular environment to help guide their differentiation. An important mediator in this process is the extracellular matrix -- secreted macromolecules that interact to form large protein networks outside the cell. During development, the extracellular matrix serves to separate adjacent cell groups, participates in establishing morphogenic gradients, and, through its ability to interact directly will cell-surface receptors, provides developmental clocks and positional information. This volume discusses how the extracellular matrix influences fundamental developmental processes and how model systems can be used to elucidate ECM function. The topics addressed range from how ECM influences early development as well as repair processes in the adult that recapitulate developmental pathways. The series Biology of Extracellular Matrix is published in collaboration with the American Society for Matrix Biology.

Few would dispute the truth of the statement People are Different', but there is much controversy over why. This book authoritatively explains the methods used to understand human variation, and extends them far beyond the primary nature or nurture' question. After chapters on basic statistics, biometrical genetics, matrix algebra and path analysis, there is a state-of-the-art account of how to fit genetic models using the LISREL package. The authors explain not only the assumptions of the twin method, but how to test them. The elementary model is expanded to cover sex limitation, sibling interaction, multivariate and longitudinal data, observer ratings, and twin-family studies. Throughout, the methods are illustrated by applications to diverse areas such as obesity, major depression, alcohol comsumption, delinquency, allergies, and common fears.