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Molecular biology in bone research

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https://www.readbyqxmd.com/read/28219691/hepatitis-b-reactivation-associated-with-immune-suppressive-and-biological-modifier-therapies-current-concepts-management-strategies-and-future-directions
#1
REVIEW
Rohit Loomba, T Jake Liang
Hepatitis B reactivation associated with immune suppressive and biological therapies is emerging to be an important cause of morbidity and mortality in patients with current or prior exposure to hepatitis B virus infection. The population at risk for HBV reactivation includes those who are either currently infected with HBV or have past exposure to HBV. Since curative and eradicative therapy for HBV is not currently available, there is a large reservoir of individuals at risk for HBV reactivation in the general population...
February 17, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28158974/a-compendium-of-developmental-gene-expression-in-lake-malawi-cichlid-fishes
#2
R F Bloomquist, T E Fowler, J B Sylvester, R J Miro, J T Streelman
BACKGROUND: Lake Malawi cichlids represent one of a growing number of vertebrate models used to uncover the genetic and developmental basis of trait diversity. Rapid evolutionary radiation has resulted in species that share similar genomes but differ markedly in phenotypes including brains and behavior, nuptial coloration and the craniofacial skeleton. Research has begun to identify the genes, as well as the molecular and developmental pathways that underlie trait divergence. RESULTS: We assemble a compendium of gene expression for Lake Malawi cichlids, across pharyngula (the phylotypic stage) and larval stages of development, encompassing hundreds of gene transcripts...
February 3, 2017: BMC Developmental Biology
https://www.readbyqxmd.com/read/28118705/europium-doped-gd2o3-nanotubes-in-vivo-increase-bone-mineral-density-and-in-vitro-promote-mineralization
#3
Huifang Liu, Yi Jin, Kun Ge, Guang Jia, Zhenhua Li, Xinjian Yang, Shizhu Chen, Min Ge, Wentong Sun, Dandan Liu, Jinchao Zhang
Europium doped Gd2O3 nanotubes (Gd2O3:Eu3+ NTs) have attracted increasing attention in bioscience for their unique optical and magnetic properties. However, the distribution and interaction between Gd2O3:Eu3+ NTs and metabolism of bone is not yet sufficiently comprehended. In this study, a systematic research of the toxicity and distribution of Gd2O3:Eu3+ NTs in mice after oral administration were carried out. The results showed that a small number of the Gd2O3:Eu3+ NTs could cross biological barriers into the liver, spleen, lung, but a high concentration was observed in bone...
January 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28096400/defining-recovery-neurobiology-of-injured-spinal-cord-by-synthetic-matrix-assisted-hmsc-implantation
#4
Alexander E Ropper, Devang K Thakor, InBo Han, Dou Yu, Xiang Zeng, Jamie E Anderson, Zaid Aljuboori, Soo-Woo Kim, Hongjun Wang, Richard L Sidman, Ross D Zafonte, Yang D Teng
Mesenchymal stromal stem cells (MSCs) isolated from adult tissues offer tangible potential for regenerative medicine, given their feasibility for autologous transplantation. MSC research shows encouraging results in experimental stroke, amyotrophic lateral sclerosis, and neurotrauma models. However, further translational progress has been hampered by poor MSC graft survival, jeopardizing cellular and molecular bases for neural repair in vivo. We have devised an adult human bone marrow MSC (hMSC) delivery formula by investigating molecular events involving hMSCs incorporated in a uniquely designed poly(lactic-co-glycolic) acid scaffold, a clinically safe polymer, following inflammatory exposures in a dorsal root ganglion organotypic coculture system...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28088983/the-epigenetic-basis-of-hematopoietic-stem-cell-aging
#5
REVIEW
Ashley Kramer, Grant A Challen
Highly proliferative tissues such as the gut, skin, and bone marrow lose millions of cells each day to normal attrition and challenge from different biological adversities. To achieve a lifespan beyond the longevity of individual cell types, tissue-specific stem cells sustain these tissues throughout the life of a human. For example, the lifespan of erythrocytes is about 100 days and adults make about two million new erythrocytes every second. A small pool of hematopoietic stem cells (HSCs) in the bone marrow is responsible for the lifetime maintenance of these populations...
January 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28036235/biomarkers-for-uranium-risk-assessment-for-the-development-of-the-cure-concerted-uranium-research-in-europe-molecular-epidemiological-protocol
#6
Yann Guéguen, Laurence Roy, Sabine Hornhardt, Christophe Badie, Janet Hall, Sarah Baatout, Eileen Pernot, Ladislav Tomasek, Olivier Laurent, Teni Ebrahimian, Chrystelle Ibanez, Stephane Grison, Sylwia Kabacik, Dominique Laurier, Maria Gomolka
Despite substantial experimental and epidemiological research, there is limited knowledge of the uranium-induce health effects after chronic low-dose exposures in humans. Biological markers can objectively characterize pathological processes or environmental responses to uranium and confounding agents. The integration of such biological markers into a molecular epidemiological study would be a useful approach to improve and refine estimations of uranium-induced health risks. To initiate such a study, Concerted Uranium Research in Europe (CURE) was established, and involves biologists, epidemiologists and dosimetrists...
January 2017: Radiation Research
https://www.readbyqxmd.com/read/27986931/bone-morphogenetic-protein-2-regulates-cell-cell-communication-by-down-regulating-connexin43-expression-in-luteinized-human-granulosa-cells
#7
Yan-Ting Wu, Hsun-Ming Chang, He-Feng Huang, Jian-Zhong Sheng, Peter C K Leung
STUDY QUESTION: Does bone morphogenetic protein 2 (BMP2) regulate connexin43 (Cx43) and modulate cell-cell communication in luteinized human granulosa cells? SUMMARY ANSWER: BMP2 decreases gap junction intercellular communication (GJIC) of luteinized human granulosa cells by down-regulating Cx43 expression through an activin receptor-like kinase (ALK)2/ALK3-mediated Sma- and Mad-related protein (SMAD)-dependent signaling pathway. WHAT IS KNOWN ALREADY: BMP2 and its putative receptors are highly expressed in the human corpus luteum and are involved in the process of luteolysis...
December 16, 2016: Molecular Human Reproduction
https://www.readbyqxmd.com/read/27914223/osteogenesis-imperfecta-new-genes-reveal-novel-mechanisms-in-bone-dysplasia
#8
REVIEW
Heeseog Kang, Smriti Aryal A C, Joan C Marini
Osteogenesis imperfecta (OI) is a skeletal dysplasia characterized by fragile bones and short stature and known for its clinical and genetic heterogeneity which is now understood as a collagen-related disorder. During the last decade, research has made remarkable progress in identifying new OI-causing genes and beginning to understand the intertwined molecular and biochemical mechanisms of their gene products. Most cases of OI have dominant inheritance. Each new gene for recessive OI, and a recently identified gene for X-linked OI, has shed new light on its (often previously unsuspected) function in bone biology...
November 19, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/27879115/preface
#9
Avner Friedman, Mirosław Lachowicz, Urszula Ledzewicz, Monika Joanna Piotrowska, Zuzanna Szymanska
This volume was inspired by the topics presented at the international conference "Micro and Macro Systems in Life Sciences" which was held on Jun 8-12, 2015 in Będlewo, Poland. System biology is an approach which tries to understand how micro systems, at the molecular and cellular levels, affect macro systems such as organs, tissue and populations. Thus it is not surprising that a major theme of this volume evolves around cancer and its treatment. Articles on this topic include models for tumor induced angiogenesis, without and with delays, metastatic niche of the bone marrow, drug resistance and metronomic chemotherapy, and virotherapy of glioma...
February 1, 2017: Mathematical Biosciences and Engineering: MBE
https://www.readbyqxmd.com/read/27854193/a-comprehensive-review-on-edible-bird-nests-and-swiftlet-farming
#10
REVIEW
Lee Suan Chua, Siti Najihah Zukefli
Edible bird's nest (EBN) is currently widely consumed by the Chinese community as tonic food and functional food, which is believed to have many medicinal benefits. Some studies have reported the biochemical compositions of EBN, graded on the basis of colour, nitrate and nitrite contents. Other studies have shown significant biological effects, while ongoing research is in progress to explore potential pharmacological applications. The high demand for EBNs in the global market has forced the local regulatory bodies to monitor swiftlet farming activities, including the EBN cleaning process...
November 2016: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/27814607/molecular-strategies-for-modulating-wnt-signaling
#11
Carl T Gustafson, Tewodros Mamo, Avudaiappan Maran, Michael J Yaszemski
The importance of the Wnt signaling cascade in the fields of developmental biology, regenerative medicine, cancer genetics, and neurobiology has fueled a wide search for potent pharmacological agents capable of controlling Wnt signaling. Numerous fields of study have lent assistance to this endeavor, yielding both natural and synthetic compounds that are capable of inducing or inhibiting Wnt at multiple stages within the pathway. Further, there is a large of body research which has investigated endogenous Wnt inducers and inhibitors, namely the secreted Wnts, Dickkof proteins, secreted Frizzled-Related Proteins, and Wnt Inhibitory Factor-1, along with others which may act via indirect means to stimulate or inhibit Wnt (e...
January 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/27807202/estrogens-and-androgens-in-skeletal-physiology-and-pathophysiology
#12
REVIEW
Maria Almeida, Michaël R Laurent, Vanessa Dubois, Frank Claessens, Charles A O'Brien, Roger Bouillon, Dirk Vanderschueren, Stavros C Manolagas
Estrogens and androgens influence the growth and maintenance of the mammalian skeleton and are responsible for its sexual dimorphism. Estrogen deficiency at menopause or loss of both estrogens and androgens in elderly men contribute to the development of osteoporosis, one of the most common and impactful metabolic diseases of old age. In the last 20 years, basic and clinical research advances, genetic insights from humans and rodents, and newer imaging technologies have changed considerably the landscape of our understanding of bone biology as well as the relationship between sex steroids and the physiology and pathophysiology of bone metabolism...
January 2017: Physiological Reviews
https://www.readbyqxmd.com/read/27785511/investigation-of-the-adhesive-characteristics-of-polymer-protein-systems-through-molecular-dynamics-simulation-and-their-relation-to-cell-adhesion-and-proliferation
#13
Amir Shamloo, Morteza Sarmadi
Protein adhesion is a prevalent, however, intricate phenomenon that occurs immediately after exposure of a biomaterial to the biological system. A study on the adhesive characteristics of biomaterial-protein systems has encountered serious hurdles as experimental methods cannot properly capture the initial stages of protein adhesion, taking place within nano/picoseconds. This propels research studies toward utilizing computational approaches to gain an understanding of the interactions between different proteins and biomaterial surfaces...
December 5, 2016: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/27714408/single-cell-biology-beyond-the-era-of-antibodies-relevance-challenges-and-promises-in-biomedical-research
#14
Parvin Abraham, Tessy Thomas Maliekal
Research of the past two decades has proved the relevance of single cell biology in basic research and translational medicine. Successful detection and isolation of specific subsets is the key to understand their functional heterogeneity. Antibodies are conventionally used for this purpose, but their relevance in certain contexts is limited. In this review, we discuss some of these contexts, posing bottle neck for different fields of biology including biomedical research. With the advancement of chemistry, several methods have been introduced to overcome these problems...
October 6, 2016: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27713567/an-animal-model-of-modic-changes-by-embedding-autogenous-nucleus-pulposus-inside-subchondral-bone-of-lumbar-vertebrae
#15
Chao Han, Tao Wang, Hong-Qiang Jiang, Jian-Xiong Ma, Peng Tian, Jia-Cheng Zang, Xin-Long Ma
The establishment of Modic changes (MCs) in animal model was vital for research of MCs. Fifty-four rabbits were divided into a sham group, a muscle embedment group (ME group) and nucleus pulposus (NP) embedment group (NPE group). In the NPE group, the discs were exposed by the lumbar anterolateral surgical approach. A needle was used to puncture the L5 vertebral body close to the endplate. NP was extracted by a syringe from L1/2 intervertebral discs and then injected into the drilled hole of subchondral bone...
October 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27711028/platelet-rich-fibrin-a-boon-in-regenerative-endodontics
#16
Priyanka D Rebentish, Girish Umashetty, Harpreet Kaur, Trupthi Doizode, Mithun Kaslekar, Shouvik Chowdhury
Research into regenerative dentistry has contributed momentum to the field of molecular biology. Periapical surgery aims at removing periapical pathology to achieve complete wound healing and regeneration of bone and periodontal tissue. Regenerative endodontic procedures are widely being added to the current armamentarium of pulp therapy procedures. The regenerative potential of platelets has been deliberated. Platelet-rich fibrin (PRF) is a wonderful tissue-engineering product and has recently gained much popularity due its promising results in wound healing bone induction...
December 2016: Minerva Stomatologica
https://www.readbyqxmd.com/read/27699910/positron-emission-tomography-of-the-equine-distal-limb-exploratory-study
#17
Mathieu Spriet, Pablo Espinosa, Andre Z Kyme, Pavel Stepanov, Val Zavarzin, Stephen Schaeffer, Scott A Katzman, Larry D Galuppo, David Beylin
Positron emission tomography (PET) is a highly sensitive, noninvasive imaging technique for quantifying biological functions of tissues. However, at the time of this study, PET imaging applications had not been reported in the horse. The aim of this exploratory study was to determine whether a portable high-resolution PET scanner could be used to image the equine distal limb. Images of the front feet and fetlocks of three research horses, with known lesions localized to the distal front limbs, were acquired under general anesthesia after administration of (18) F-fluorodeoxyglucose ((18) F-FDG), with doses ranging from 1...
November 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27658728/bone-tissue-regeneration-application-of-mesenchymal-stem-cells-and-cellular-and-molecular-mechanisms
#18
Jin Zhang, Jake Chen
The regeneration of damaged bone tissues to a pre-disease state has been a major goal for both clinicians and researchers worldwide. However, critical-sized bone defects which are unable to heal completely are a major clinical concern because effective, evidence-based regenerative therapy is still missing. Bone tissue engineering, aiming at providing novel and effective materials to promote bone regeneration, has been considered as a promising alternative to the traditional use of autografts, allografts and xenografts based on the fact that engineered bone tissue has limitless supply and has no disease transmission...
September 21, 2016: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27651797/establishment-and-characterization-of-a-human-small-cell-osteosarcoma-cancer-stem-cell-line-a-new-possible-in-vitro-model-for-discovering-small-cell-osteosarcoma-biology
#19
Gaia Palmini, Roberto Zonefrati, Cecilia Romagnoli, Alessandra Aldinucci, Carmelo Mavilia, Gigliola Leoncini, Alessandro Franchi, Rodolfo Capanna, Maria Luisa Brandi
Osteosarcoma (OSA) is the most common primary malignant bone tumor, usually arising in the long bones of children and young adults. There are different subtypes of OSA, among which we find the conventional OS (also called medullary or central osteosarcoma) which has a high grade of malignancy and an incidence of 80%. There are different subtypes of high grade OS like chondroblastic, fibroblastic, osteoblastic, telangiectatic, and the small cell osteosarcoma (SCO). In this study, for the first time, we have isolated, established, and characterized a cell line of cancer stem cells (CSCs) from a human SCO...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27630997/canine-lymphoma-more-than-a-morphological-diagnosis-what-we-have-learned-about-diffuse-large-b-cell-lymphoma
#20
REVIEW
Luca Aresu
Diffuse large B-cell lymphoma (DLBCL) is the most common canine aggressive B-cell lymphoma worldwide, and new recent molecular approaches have shown that DLBCL constitutes a heterogeneous tumor that cannot be unraveled by morphology and immunophenotype. DLBCL behaves aggressively, typically progressing over a short period of time, and the therapy response may be difficult to be predicted. Recently, the rate of bone marrow infiltration by flow cytometry has been demonstrated to be prognostic, but more sensible markers are needed...
2016: Frontiers in Veterinary Science
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