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https://www.readbyqxmd.com/read/28214372/canonical-and-cellular-pathways-timing-gamete-release-in-acropora-digitifera-okinawa-japan
#1
Y Rosenberg, T Doniger, S Harii, F Sinniger, O Levy
Natural light cycles are important for synchronizing behavioral and physiological rhythms over varying time-periods in both plants and animals. An endogenous clock, regulated by positive and negative elements, interacting in feedback loops, control these rhythms. Many corals exhibit diel cycles of polyp expansion and contraction entrained by solar light patterns and monthly cycles of spawning or planulation that correspond to nocturnal lunar light cycles. However, despite considerable interest in studies of coral reproduction, there is currently not enough molecular information about the cellular pathways involved with synchronizing spawning/planulation in broadcast spawners and brooders...
February 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28210629/cellular-mechanisms-of-liver-regeneration-and-cell-based-therapies-of-liver-diseases
#2
REVIEW
Irina V Kholodenko, Konstantin N Yarygin
The emerging field of regenerative medicine offers innovative methods of cell therapy and tissue/organ engineering as a novel approach to liver disease treatment. The ultimate scientific foundation of both cell therapy of liver diseases and liver tissue and organ engineering is delivered by the in-depth studies of the cellular and molecular mechanisms of liver regeneration. The cellular mechanisms of the homeostatic and injury-induced liver regeneration are unique. Restoration of the mass of liver parenchyma is achieved by compensatory hypertrophy and hyperplasia of the differentiated parenchymal cells, hepatocytes, while expansion and differentiation of the resident stem/progenitor cells play a minor or negligible role...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28209761/genetic-adaptation-of-the-schizothoracine-fishes-to-the-phased-uplifting-of-qinghai-tibetan-plateau
#3
Dongsheng Zhang, Mengchao Yu, Peng Hu, Sihua Peng, Yimeng Liu, Weiwen Li, Congcong Wang, Shunping He, Wanying Zhai, Qianghua Xu, Liangbiao Chen
Many species of Schizothoracine, a sub-family of Cyprinidae, are highly endemic to the Qinghai-Tibetan Plateau (QTP). To characterize the adaptive changes associated with the Schizothoracine expansion in high-altitudes, we sequenced tissue transcriptomes of two highland and two sub-highland Schizothoracines, and analyzed gene evolution patterns by comparing to lowland cyprinids. Phylogenetic tree reconstruction and divergence time estimation indicated that the common ancestor of Schizothoracine fishes lived around 32...
February 16, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28208060/rna-toxicity-and-foci-formation-in-microsatellite-expansion-diseases
#4
REVIEW
Nan Zhang, Tetsuo Ashizawa
More than 30 incurable neurological and neuromuscular diseases are caused by simple microsatellite expansions consisted of 3-6 nucleotides. These repeats can occur in non-coding regions and often result in a dominantly inherited disease phenotype that is characteristic of a toxic RNA gain-of-function. The expanded RNA adopts unusual secondary structures, sequesters various RNA binding proteins to form insoluble nuclear foci, and causes cellular defects at a multisystem level. Nuclear foci are dynamic in size, shape and colocalization of RNA binding proteins in different expansion diseases and tissue types...
February 13, 2017: Current Opinion in Genetics & Development
https://www.readbyqxmd.com/read/28208057/vertical-alveolar-distraction-osteogenesis-of-the-atrophic-posterior-mandible-before-dental-implant-insertion
#5
Adi Rachmiel, Dekel Shilo, Dror Aizenbud, Omri Emodi
PURPOSE: Augmentation of deficient mandibular posterior alveolar ridges poses a great challenge because of extensive bone deficiency and the presence of the inferior alveolar nerve. This study sets its focus on vertical alveolar distraction osteogenesis (ADO) at the posterior mandible before dental implant placement. MATERIALS AND METHODS: The study included 21 sites in 18 patients with severe mandibular posterior alveolar ridge deficiency. A trapezoidal osteotomy was performed, and an extraosseous alveolar distraction device was fixed and activated after a 4-day latency period at a rate of 0...
January 21, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28207489/b-cell-abnormalities-and-impact-on-antibody-response-in-hiv-infection
#6
Alessandra Noto, Giuseppe Pantaleo
PURPOSE OF REVIEW: The purpose of the present review is to provide an update on the current development in the field of broadly neutralizing antibodies (bNabs) and their potential use in the prevention and therapeutic settings, and an evaluation of the B-cell abnormalities that may impair antibody responses in HIV infection. RECENT FINDINGS: Major advances have been achieved in the characterization of bNabs directed against different vulnerable regions of HIV Envelope (Env)...
February 15, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/28207466/the-subunit-principle-in-scar-face-revision
#7
Ahmed Elshahat, Riham Lashin
Facial scaring is considered one of the most difficult cosmetic problems for any plastic surgeon to solve. The condition is more difficult if the direction of the scar is not parallel to relaxed skin tension lines. Attempts to manage this difficult situation included revisions using geometric designs, Z plasties or W plasties to camouflage the straight line visible scaring. The use of long-lasting resorbable sutures was tried too. Recently, the use of botulinum toxin during revision improved the results. Fractional CO2 lasers, microfat grafts, and platelet-rich plasma were added to the armamentarium...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28207463/implantation-of-thickened-artificial-bone-for-reduction-of-dead-space-and-prevention-of-infection-between-implant-and-dura-in-secondary-reconstruction-of-the-skull
#8
Mine Ozaki, Keigo Narita, Masakazu Kurita, Yuki Iwashina, Akihiko Takushima, Kiyonori Harii
For the treatment of skull defect compensation after neurosurgery, a customized artificial bone is often employed owing to its toughness and the relative ease of producing cosmetically good result. However, implants are vulnerable to infection and removal of implant is sometimes necessary. Several other treatment options such as autologous bone graft or free flap are likely to be considered for the secondary reconstruction to avoid reinfection; however, reimplantation of artificial bone is beneficial for the patients, being not concerned with donor site morbidity...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28204930/immediate-nipple-reconstruction-during-implant-based-breast-reconstruction
#9
Ki Yong Hong, Young-Eun Kim, Kyung Won Minn, Ung Sik Jin
BACKGROUND: Nipple reconstruction is usually performed as a separate procedure, several months after the primary breast reconstruction. This study compared the outcomes of immediate and delayed nipple reconstructions during implant-based breast reconstructions. METHODS: A retrospective review was conducted of patients who underwent nipple reconstruction, after implant-based breast reconstruction, between September 2014 and August 2015. The nipple was simultaneously reconstructed following tissue expander removal and implant placement...
February 15, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28202921/a-human-programmed-death-ligand-1-expressing-mouse-tumor-model-for-evaluating-the-therapeutic-efficacy-of-anti-human-pd-l1-antibodies
#10
Anfei Huang, Di Peng, Huanhuan Guo, Yinyin Ben, Xiangyang Zuo, Fei Wu, Xiaoli Yang, Fei Teng, Zhen Li, Xueming Qian, F Xiao-Feng Qin
Huge efforts have been devoted to develop therapeutic monoclonal antibodies targeting human Programmed death-ligand 1 (hPD-L1) for treating various types of human cancers. However, thus far there is no suitable animal model for evaluating the anti-tumor efficacy of such antibodies against hPD-L1. Here we report the generation of a robust and effective system utilizing hPD-L1-expressing mouse tumor cells to study the therapeutic activity and mode of action of anti-human PD-L1 in mice. The model has been validated by using a clinically proven hPD-L1 blocking antibody...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202726/two-tonoplast-mate-proteins-function-as-turgor-regulating-chloride-channels-in-arabidopsis
#11
Haiwen Zhang, Fu-Geng Zhao, Ren-Jie Tang, Yuexuan Yu, Jiali Song, Yuan Wang, Legong Li, Sheng Luan
The central vacuole in a plant cell occupies the majority of the cellular volume and plays a key role in turgor regulation. The vacuolar membrane (tonoplast) contains a large number of transporters that mediate fluxes of solutes and water, thereby adjusting cell turgor in response to developmental and environmental signals. We report that two tonoplast Detoxification efflux carrier (DTX)/Multidrug and Toxic Compound Extrusion (MATE) transporters, DTX33 and DTX35, function as chloride channels essential for turgor regulation in Arabidopsis Ectopic expression of each transporter in Nicotiana benthamiana mesophyll cells elicited a large voltage-dependent inward chloride current across the tonoplast, showing that DTX33 and DTX35 each constitute a functional channel...
February 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28202540/sorting-out-adipocyte-precursors-and-their-role-in-physiology-and-disease
#12
REVIEW
Chelsea Hepler, Lavanya Vishvanath, Rana K Gupta
The ability to maintain and expand the pool of adipocytes in adults is integral to the regulation of energy balance, tissue/stem cell homeostasis, and disease pathogenesis. For decades, our knowledge of adipocyte precursors has relied on cellular models. The identity of native adipocyte precursors has remained unclear. Recent studies have identified distinct adipocyte precursor populations that are physiologically regulated and contribute to the development, maintenance, and expansion of adipocyte pools in mice...
January 15, 2017: Genes & Development
https://www.readbyqxmd.com/read/28197348/angioimmunoblastic-t-cell-lymphoma-a-questionable-association-with-follicular-dendritic-cell-sarcoma
#13
Daniel Benharroch, Miriam Zekzer, Karen Nalbandyan
An elderly woman presented with generalized lymphadenopathy, several systemic symptoms, and splenomegaly. An inguinal lymph node excision revealed a compound picture. One aspect of the lymph node morphology, including cells with follicular T-helper cell phenotype, was most consistent with angioimmunoblastic T-cell lymphoma. The other component, revealing spindle cells forming whorls with immunostaining for CD21, CD23, and fascin, might be an integral part of this T-cell lymphoma. However, due to the often massive involvement of the nodal tissue by these follicular dendritic cells, these areas were questionably suggestive of involvement by follicular dendritic cell sarcoma...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28194374/regenerative-potential-of-the-cartilaginous-tissue-in-mesenchymal-stem-cells-update-limitations-and-challenges
#14
Ivana Beatrice Mânica da Cruz, Antônio Lourenço Severo, Verônica Farina Azzolin, Luiz Filipe Machado Garcia, André Kuhn, Osvandré Lech
Advances in the studies with adult mesenchymal stem cells (MSCs) have turned tissue regenerative therapy into a promising tool in many areas of medicine. In orthopedics, one of the main challenges has been the regeneration of cartilage tissue, mainly in diarthroses. In the induction of the MSCs, in addition to cytodifferentiation, the microenvironmental context of the tissue to be regenerated and an appropriate spatial arrangement are extremely important factors. Furthermore, it is known that MSC differentiation is fundamentally determined by mechanisms such as cell proliferation (mitosis), biochemical-molecular interactions, movement, cell adhesion, and apoptosis...
January 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28194153/nasal-polyp-derived-mesenchymal-stromal-cells-exhibit-lack-of-immune-associated-molecules-and-high-levels-of-stem-progenitor-cells-markers
#15
Pedro Wey Barbosa de Oliveira, Rogério Pezato, Juan Sebastian Henao Agudelo, Claudina Angela Perez-Novo, Wim Vanden Berghe, Niels Olsen Câmara, Danilo Candido de Almeida, Luís Carlos Gregorio
Mesenchymal stromal cells (MSCs) are considered adult progenitor stem cells and have been studied in a multitude of tissues. In this context, the microenvironment of nasal polyp tissue has several inflammatory cells, but their stroma compartment remains little elucidated. Hence, we isolated MSCs from nasal polyps Polyp-MSCs (PO-MSCs) and compared their molecular features and gene expression pattern with bone marrow-derived MSCs (BM-MSCs). Initially, both PO-MSCs and BM-MSCs were isolated, cultivated, and submitted to morphologic, differentiation, phenotypic, immunosuppressive, and gene expression assays...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28194152/hsp65-producing-lactococcus-lactis-prevents-inflammatory-intestinal-disease-in-mice-by-il-10-and-tlr2-dependent-pathways
#16
Ana Cristina Gomes-Santos, Rafael Pires de Oliveira, Thaís Garcias Moreira, Archimedes Barbosa Castro-Junior, Bernardo Coelho Horta, Luísa Lemos, Leonardo Augusto de Almeida, Rafael Machado Rezende, Denise Carmona Cara, Sérgio Costa Oliveira, Vasco Ariston Carvalho Azevedo, Anderson Miyoshi, Ana Maria Caetano Faria
Heat shock proteins (Hsps) are highly expressed at all sites of inflammation. As they are ubiquitous and immunodominant antigens, these molecules represent good candidates for the therapeutic use of oral tolerance in autoimmune and chronic inflammatory diseases. Evidences from human and animal studies indicate that inflammatory bowel disease (IBD) results from uncontrolled inflammatory responses to intestinal microbiota. Hsps are immunodominant proteins expressed by several immune cells and by commensal bacteria...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28192468/matrix-metalloproteinases-are-required-for-membrane-motility-and-lumenogenesis-during-drosophila-heart-development
#17
Qanber S Raza, Jessica L Vanderploeg, J Roger Jacobs
Matrix Metalloproteinases (Mmps) degrade glycoproteins and proteoglycans of the extracellular matrix (ECM) or cell surface and are crucial for morphogenesis. Mmps and their inhibitors are expressed during early stages of cardiac development in vertebrates and expression is altered in multiple congenital cardiomyopathies such as cardia bifida. Drosophila genome encodes two copies of Mmps, Mmp1 and Mmp2 whereas in humans up to 25 Mmps have been identified with overlapping functions. We investigated the role of Mmps during embryonic heart development in Drosophila, a process which is morphogenetically similar to early heart tube formation in vertebrates...
2017: PloS One
https://www.readbyqxmd.com/read/28191821/crucial-role-of-mesangial-cell-derived-connective-tissue-growth-factor-in-a-mouse-model-of-anti-glomerular-basement-membrane-glomerulonephritis
#18
Naohiro Toda, Kiyoshi Mori, Masato Kasahara, Akira Ishii, Kenichi Koga, Shoko Ohno, Keita P Mori, Yukiko Kato, Keisuke Osaki, Takashige Kuwabara, Katsutoshi Kojima, Daisuke Taura, Masakatsu Sone, Taiji Matsusaka, Kazuwa Nakao, Masashi Mukoyama, Motoko Yanagita, Hideki Yokoi
Connective tissue growth factor (CTGF) coordinates the signaling of growth factors and promotes fibrosis. Neonatal death of systemic CTGF knockout (KO) mice has hampered analysis of CTGF in adult renal diseases. We established 3 types of CTGF conditional KO (cKO) mice to investigate a role and source of CTGF in anti-glomerular basement membrane (GBM) glomerulonephritis. Tamoxifen-inducible systemic CTGF (Rosa-CTGF) cKO mice exhibited reduced proteinuria with ameliorated crescent formation and mesangial expansion in anti-GBM nephritis after induction...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28191777/enhanced-expansion-and-sustained-inductive-function-of-skin-derived-precursor-cells-in-computer-controlled-stirred-suspension-bioreactors
#19
Natacha A Agabalyan, Breanna S Borys, Holly D Sparks, Kathryn Boon, Eko W Raharjo, Sepideh Abbasi, Michael S Kallos, Jeff Biernaskie
Endogenous dermal stem cells (DSCs) reside in the adult hair follicle mesenchyme and can be isolated and grown in vitro as self-renewing colonies called skin-derived precursors (SKPs). Following transplantation into skin, SKPs can generate new dermis and reconstitute the dermal papilla and connective tissue sheath, suggesting they could have important therapeutic value for the treatment of skin disease (alopecia) or injury. Controlled cell culture processes must be developed to efficiently and safely generate sufficient stem cell numbers for clinical use...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28191769/suppression-of-transforming-growth-factor-%C3%AE-signaling-delays-cellular-senescence-and-preserves-the-function-of-endothelial-cells-derived-from-human-pluripotent-stem-cells
#20
Hao Bai, Yongxing Gao, Dixie L Hoyle, Tao Cheng, Zack Z Wang
Transplantation of vascular cells derived from human pluripotent stem cells (hPSCs) offers an attractive noninvasive method for repairing the ischemic tissues and for preventing the progression of vascular diseases. Here, we found that in a serum-free condition, the proliferation rate of hPSC-derived endothelial cells is quickly decreased, accompanied with an increased cellular senescence, resulting in impaired gene expression of endothelial nitric oxide synthase (eNOS) and impaired vessel forming capability in vitro and in vivo...
February 2017: Stem Cells Translational Medicine
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