Download or read book Signaling Mechanisms in Protozoa and Invertebrates written by G. Csaba and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparative endocrinology helps to find the roots of homeostatic regulation in organisms. In this context, many years ago a series of experiments were done, which demonstrated the hormonal regula tion also on the invertebrate level. The mechanisms are partly similar, partly different, from those found in vertebrates. The new receptor era of mammalian endocrinology stimulated research on invertebrate hormone receptors, and sophisticated methods are applied also to determine hormones. The experiments demonstrated the existence and even similar function of these structures and signaling molecules. However, data on hormones and receptors at the lowest level of metazoan life and the highest level of protozoan life were not at our disposal. About two decades ago, first observations on the presence of hormone receptors reacting to vertebrate hormones in protozoa were made. Since the early 1980s we know that hormone-like molecules similar to those of higher vertebrates are present also in unicellular organisms. The presence of some second messengers in Tetrahymena was recognized. Since then, the research has been extended and many structures - previously believed to be solely vertebrate characteristics, such as opiate receptors, similar to mammalian ones - were found in unicellular organisms. These observations justified the assumption of a complete endocrine system at protozoan level, where - considering the unicellularit- this seemed to be not required. However, it became clear that the roots of endocrine communication date back at least 2 billion years.
Download or read book Invertebrate Cytokines and the Phylogeny of Immunity written by Alain Beschin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the assumption that invertebrates as well as vertebrates possess factors regulating hematopoiesis, response to infection or wounding, studies dealing with the evolution of immunity have focused on the isolation and characterization of putative cytokine-related molecules from invertebrates. Until recently, most of our knowledge of cytokine- and cytokine receptor-like molecules in invertebrates has relied on functional assays and similarities at the physicochemical level. As such, a phylogenetic relationship between invertebrate cytokine-like molecules and invertebrate counterparts could not be convincingly demonstrated. In the present book, recent studies demonstrating cytokine-like activities and related signaling pathways in invertebrates are critically reviewed, focusing on findings from molecular biology and taking advantage of the completion of the genome from the fly Drosophila and the worm Caenorhabditis elegans.
Download or read book Biocommunication of Ciliates written by Guenther Witzany and published by Springer. This book was released on 2016-05-23 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first coherent description of all levels of communication of ciliates. Ciliates are highly sensitive organisms that actively compete for environmental resources. They assess their surroundings, estimate how much energy they need for particular goals, and then realise the optimum variant. They take measures to control certain environmental resources. They perceive themselves and can distinguish between ‘self’ and ‘non-self’. They process and evaluate information and then modify their behaviour accordingly. These highly diverse competences show us that this is possible owing to sign(aling)-mediated communication processes within ciliates (intra-organismic), between the same, related and different ciliate species (inter-organismic), and between ciliates and non-ciliate organisms (trans-organismic). This is crucial in coordinating growth and development, shape and dynamics. This book further serves as a learning tool for research aspects in biocommunication in ciliates. It will guide scientists in further investigations on ciliate behavior, how they mediate signaling processes between themselves and the environment.
Download or read book International Review of Cytology written by and published by Academic Press. This book was released on 1997-12-10 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Review of Cytology presents current advances and comprehensive reviews in cell biology-both plant and animal. Articles address structure and control of gene expression, nucleocytoplasmic interactions, control of cell development and differentiation, and cell transformation and growth. Authored by some of the foremost scientists in the field, each volume provides up-to-date information and directions for future research. - The Cellular Basis of Tumor Progression - Molecules Involved in Mammalian Serm-Egg Interaction - Coordinated Nuclear and Chloroplast Gene Expression in Plants - Signaling in Unicellular Eukaryotes - Metabolic Detoxificiation of So2 in plants
Download or read book RNA Trafficking and Nuclear Structure Dynamics written by Philippe Jeanteur and published by Springer Science & Business Media. This book was released on 2004-01-14 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume explores nuclear structure and trafficking involving or relevant to RNA and RNPs. Topics include advances and current problems in the structural organization of different subnuclear compartments, Cajal bodies and gems, speckles containing splicing factors, and PML bodies characteristic of ProMyelocytic leukemia. The book also describes the dynamic aspects of RNA trafficking and the latest technologies for live cell imaging of mRNA.
Download or read book Epigenetics and Chromatin written by Philippe Jeanteur and published by Springer Science & Business Media. This book was released on 2008-09-10 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Epigenetics refers to heritable patterns of gene expression which do not depend on alterations of genomic DNA sequence. This book provides a state-of-the-art account of a few selected hot spots by scientists at the edge in this extremely active field. It puts special emphasis on two main streams of research. One is the role of post-translational modifications of proteins, mostly histones, on chromatin structure and accessibility. The other one deals with parental genomic imprinting, a process which allows to express a few selected genes from only one of the parental allele while extinguishing the other.
Download or read book Viruses and Apoptosis written by Covadonga Alonso and published by Springer Science & Business Media. This book was released on 2004-03-24 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using different viral models, molecular pathways regulated by viral genes and their role in the pathogenesis of infection are analyzed. The book also offers an update of known signaling pathways in apoptosis and their role in normal and infected cells. Special emphasis is given to molecular pathways underlying viral transformation and oncogenesis and how research in this area is opening opportunities in cancer therapy.
Download or read book Regulation of Alternative Splicing written by Philippe Jeanteur and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery in 1977 that genes are split into exons and introns has done away with the one gene - one protein dogma. Indeed, the removal of introns from the primary RNA transcript is not necessarily straightforward since there may be optional pathways leading to different messenger RNAs and consequently to different proteins. Examples of such an alternative splicing mechanism cover all fields of biology. Moreover, there are plenty of occurrences where deviant splicing can have pathological effects. Despite the high number of specific cases of alternative splicing, it was not until recently that the generality and extent of this phenomenon was fully appreciated. A superficial reading of the preliminary sequence of the human genome published in 2001 led to the surprising, and even deceiving to many scientists, low number of genes (around 32,000) which contrasted with the much higher figure around 150,000 which was previously envisioned. Attempts to make a global assessment of the use of alternative splicing are recent and rely essentially on the comparison of genomic mRNA and EST sequences as reviewed by Thanaraj and Stamm in the first chapter of this volume. Most recent estimates suggest that 40-60% of human genes might be alternatively spliced, as opposed to about 22% for C. elegans.
Download or read book Guidance Cues in the Developing Brain written by Ivica Kostovic and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many complex molecular interactions are involved in the development of the mammalian brain. Molecules serving as guidance cues for migratory cells, growing axons and for recognition of postsynaptic targets are a major topic for research because they are directly involved in the formation of neuronal circuits, thus creating the foundation for subsequent functional refinement through interactions with the environment. In addition, most guidance cue molecules are also involved in plasticity, damage repair and regeneration in the adult brain. This volume reviews current knowledge on major classes of molecules involved in: guidance of growing axons; tau proteins involved in the establishment of axonal polarity, outgrowth and contact recognition; gangliosides and lectins involved in neuronal migration, neurite outgrowth and contact recognition; and myelin molecules that inhibit nerve regeneration.
Download or read book Biology of Aging written by Alvaro Macieira-Coelho and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: The survival of the human species has improved significantly in modern times. During the last century, the mean survival of human populations in developed countries has increased more than during the preceding 5000 years. This improvement in survival was accompanied by an increase in the number of active years. In other words, the increase in mean life span was accompanied by an increase in health span. This is now accentuated by progress in medicine reducing the impact of physiologic events such as menopause and of patho logical processes such as atherosclerosis. Up to now,research on aging, whether theoretical or experimental, has not contributed to improvement in human survival. Actually, there is a striking contrast between these significant modifications in survival and the present knowledge of the mechanisms of human aging. Revealed by this state of affairs are the profound disagreements between gerontologists in regard to the way oflooking at the aging process. The definition of aging itself is difficult to begin with because of the variability of how it occurs in different organisms.
Download or read book Silicon Biomineralization written by Werner E. G. Müller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: During evolution silica deposition has been used in Protozoa, Metazoa and in plants as skeletal elements. It appears that the mechanisms for the formation of biogenic silica have evolved independently in these three taxa. In Protozoa and plants biosilicification appears to be primarily driven by non-enzymatic processes and procedes on organic matrices. In contrast, in sponges (phylum Porifera) this process is mediated by enzymes; the initiation of this process is likewise dependent on organic matrices. In this monograph the role of biosilica as stabilizing structures in different organisms is reviewed and their role for morphogenetic processes is outlined. It provides an up-to-date summary of the mechanisms by which polymeric biosilica is formed. The volume is intended for biologists, biochemists and molecular biologists, involved in the understanding of structure formation in living organisms and will also be very useful for scientists working in the field of applied Nanotechnology and Nanobiotechnology.
Download or read book Microbial Endocrinology Interkingdom Signaling in Infectious Disease and Health written by Mark Lyte and published by Springer. This book was released on 2015-11-20 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition highlights the numerous advances made in the field of microbial endocrinology over the last five years. Prominent among these new topics featured is the emergence of the microbiota-gut-brain axis and the role it plays in brain function. Specific focus is given to the role of microbial endocrinology in the evolutionary symbiosis between man and microbe as it relates to both health and disease. With new chapters on the microbiome and its relation to neurochemicals, this new edition brings this important volume up to date.
Download or read book Molecular Biology of the Cell written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts Service Source Index written by American Chemical Society. Chemical Abstracts Service and published by . This book was released on 1907 with total page 2064 pages. Available in PDF, EPUB and Kindle. Book excerpt: A key source to journal and conference abbreviations in the sciences. Although it focuses on chemistry, other scientific and engineering disciplines are also well represented. In addition to the abbreviation and full title, each entry also contains publishing info, title changes, language and frequency of publication, and libraries owning that title. Over 130,000 entries representing more than 70,000 publications dating back to 1907 are included.
Download or read book The Cumulative Book Index written by and published by . This book was released on 1997 with total page 2312 pages. Available in PDF, EPUB and Kindle. Book excerpt: A world list of books in the English language.
Download or read book The Zoological Record written by and published by . This book was released on 1981 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Zoological Record is published annually in separate sections. The first of these is Comprehensive Zoology, followed by sections recording a year's literature relating to a Phylum or Class of the Animal Kingdom. The final section contains the new genera and subgenera indexed in the volume." Each section of a volume lists the sections of that volume.
Download or read book Cellular Signal Processing written by Friedrich Marks and published by Garland Science. This book was released on 2017-05-17 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular Signal Processing offers a unifying view of cell signaling based on the concept that protein interactions act as sophisticated data processing networks that govern intracellular and extracellular communication. It is intended for use in signal transduction courses for undergraduate and graduate students working in biology, biochemistry, bioinformatics, and pharmacology, as well as medical students. The text is organized by three key topics central to signal transduction: the protein network, its energy supply, and its evolution. It covers all important aspects of cell signaling, ranging from prokaryotic signal transduction to neuronal signaling, and also highlights the clinical aspects of cell signaling in health and disease. This new edition includes expanded coverage of prokaryotes, as well as content on new developments in systems biology, epigenetics, redox signaling, and small, non-coding RNA signaling.
