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https://www.readbyqxmd.com/read/28874722/ameliorative-effects-of-melatonin-on-dark-induced-leaf-senescence-in-gardenia-gardenia-jasminoides-ellis-leaf-morphology-anatomy-physiology-and-transcriptome
#1
Daqiu Zhao, Rong Wang, Jiasong Meng, Zhiyuan Li, Yanqing Wu, Jun Tao
Cut gardenia (Gardenia jasminoides Ellis) foliage is widely used as a vase material or flower bouquet indoors; however, insufficient indoor light accelerates its senescence, which shortens its viewing time. In this study, applying melatonin to delay gardenia leaf senescence when exposed to extremely low light condition (darkness), and the results showed that 1.0 mM was the effective concentration. At this concentration, chlorophyll contents and chlorophyll fluorescence parameters (Fv/Fm, Fv/F0 and Y(II)) increased, while the carotenoid and flavonoid contents decreased...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28873382/development-and-anatomy-of-the-enteroendocrine-system-in-humans
#2
Carsten Posovszky
The gastrointestinal (GI) tract exhibits an enormous surface area that consists mostly of absorptive enterocytes. Enteroendocrine cells (EECs) are found scattered along the GI tract between absorptive enterocytes and other secretory cells, and comprise around 1% of the epithelial cell population. Interestingly, they develop from the same crypt stem cell as the other absorptive or secretory cells of the gut. EECs differentiate along the crypt villus axis and are renewed every 4-6 days, and hence possess a high plasticity...
2017: Endocrine Development
https://www.readbyqxmd.com/read/28856135/plant-science-view-on-biohybrid-development
#3
REVIEW
Tomasz Skrzypczak, Rafał Krela, Wojciech Kwiatkowski, Shraddha Wadurkar, Aleksandra Smoczyńska, Przemysław Wojtaszek
Biohybrid consists of a living organism or cell and at least one engineered component. Designing robot-plant biohybrids is a great challenge: it requires interdisciplinary reconsideration of capabilities intimate specific to the biology of plants. Envisioned advances should improve agricultural/horticultural/social practice and could open new directions in utilization of plants by humans. Proper biohybrid cooperation depends upon effective communication. During evolution, plants developed many ways to communicate with each other, with animals, and with microorganisms...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28855098/the-bioelectric-code-an-ancient-computational-medium-for-dynamic-control-of-growth-and-form
#4
REVIEW
Michael Levin, Christopher J Martyniuk
What determines large-scale anatomy? DNA does not directly specify geometrical arrangements of tissues and organs, and a process of encoding and decoding for morphogenesis is required. Moreover, many species can regenerate and remodel their structure despite drastic injury. The ability to obtain the correct target morphology from a diversity of initial conditions reveals that the morphogenetic code implements a rich system of pattern-homeostatic processes. Here, we describe an important mechanism by which cellular networks implement pattern regulation and plasticity: bioelectricity...
August 27, 2017: Bio Systems
https://www.readbyqxmd.com/read/28831703/the-role-played-by-modified-bioinspired-surfaces-in-interfacial-properties-of-biomaterials
#5
REVIEW
Thais T Paterlini, Lucas F B Nogueira, Camila B Tovani, Marcos A E Cruz, Rafael Derradi, Ana P Ramos
The success of a biomaterial relies on an appropriate interaction between the surface of that biomaterial and the surrounding environment; more specifically, the success of a biomaterial depends on how fluids, proteins, and cells interact with the foreign material. For this reason, the surface properties of biomaterial, such as composition, charge, wettability, and roughness, must be optimized for a desired application to be achieved. In this review we highlight different bioinspired approaches that are used to manipulate and fine-tune the interfacial properties of biomaterials...
August 22, 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/28808974/isolation-purification-and-culture-of-primary-murine-sensory-neurons
#6
Sarah Katzenell, Jorge R Cabrera, Brian J North, David A Leib
Cultured primary neurons have been of extraordinary value for the study of neuronal anatomy, cell biology, and physiology. While use of neuronal cell lines has ease and utility, there are often caveats that arise due to their mitotic nature. This methods article presents detailed methodology for the preparation, purification, and culture of adult murine sensory neurons for the study of herpes simplex virus lytic and latent infections. While virology is the application for our laboratory, these cultures also have broad utility for neurobiologists and cell biologists...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28790453/perianal-fistulizing-crohn-s-disease-pathogenesis-diagnosis-and-therapy
#7
REVIEW
Julián Panés, Jordi Rimola
Perianal fistulizing Crohn's disease has a major negative effect on patient quality of life and is a predictor of poor long-term outcomes. Factors involved in the pathogenesis of perianal fistulizing Crohn's disease include an increased production of transforming growth factor β, TNF and IL-13 in the inflammatory infiltrate that induce epithelial-to-mesenchymal transition and upregulation of matrix metalloproteinases, leading to tissue remodelling and fistula formation. Care of patients with perianal Crohn's disease requires a multidisciplinary approach...
August 9, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28665491/feasibility-of-dynamic-adaptive-passive-scattering-proton-therapy-with-computed-tomography-image-guidance-in-the-lung
#8
Shunsuke Moriya, Hidenobu Tachibana, Kenji Hotta, Naoki Nakamura, Takeji Sakae, Tetsuo Akimoto
PURPOSE: Hypo-fractionated proton beam therapy (PBT) is an approach that has been increasingly explored over the past decade. It requires high geometric accuracy for targeting of the PBT beams. However, image-guided PBT is currently commonly performed with kV X-ray images of bony anatomy. A dynamic adaptive passive scattering PBT system using computed tomography-based three-dimensional image guidance was developed, and its effectiveness was then evaluated retrospectively in patients with nonsmall cell lung cancer (NSCLC)...
September 2017: Medical Physics
https://www.readbyqxmd.com/read/28640452/role-of-epicardial-adipose-tissue-in-health-and-disease-a-matter-of-fat
#9
Bénédicte Gaborit, Coralie Sengenes, Patricia Ancel, Alexis Jacquier, Anne Dutour
Epicardial adipose tissue (EAT) is a small but very biologically active ectopic fat depot that surrounds the heart. Given its rapid metabolism, thermogenic capacity, unique transcriptome, secretory profile, and simply measurability, epicardial fat has drawn increasing attention among researchers attempting to elucidate its putative role in health and cardiovascular diseases. The cellular crosstalk between epicardial adipocytes and cells of the vascular wall or myocytes is high and suggests a local role for this tissue...
June 18, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28638930/-different-adipose-tissue-depots-and-metabolic-syndrome-in-human
#10
Ran Wang, Xiao-Nan Li
Obesity is characterized by abnormal and excessive adipose tissue accumulated in the body. Compared with peripheral obesity (the accumulation of subcutaneous adipose tissue), abdominal obesity (the accumulation of visceral adipose tissue) is associated with increased risk of the metabolic syndrome, such as diabetes, hypertension, atherosclerosis, and dyslipidemia. Adipose tissue is a highly heterogeneous endocrine organ. Adipose tissue depots differ significantly in anatomy, cell biology, glucose and lipid metabolism as well as in endocrine regulation...
June 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28599968/the-possible-role-of-amh-in-shortening-the-gubernacular-cord-in-testicular-descent-a-reappraisal-of-the-evidence
#11
John M Hutson, Francisco A Lopez-Marambio
BACKGROUND/AIM: Anti-Müllerian hormone (AMH), also called Müllerian inhibiting substance (MIS), is glycoprotein hormone secreted by the fetal Sertoli cells to regulate regression of the Müllerian ducts, the anlagen of the uterus, fallopian tubes, and upper vagina. After its existence was predicted in 1946 and its isolation and purification in the 1970's, a huge amount of information has been gathered on its molecular biology and function in the last 30-40years. Once thought to be a locally acting factor in the male fetus during sexual differentiation, it is now recognized as an endocrine hormone present in both sexes and with functions throughout life...
May 27, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28592171/next-generation-human-skin-constructs-as-advanced-tools-for-drug-development
#12
H E Abaci, Zongyou Guo, Yanne Doucet, Joanna Jacków, Angela Christiano
Many diseases, as well as side effects of drugs, manifest themselves through skin symptoms. Skin is a complex tissue that hosts various specialized cell types and performs many roles including physical barrier, immune and sensory functions. Therefore, modeling skin in vitro presents technical challenges for tissue engineering. Since the first attempts at engineering human epidermis in 1970s, there has been a growing interest in generating full-thickness skin constructs mimicking physiological functions by incorporating various skin components, such as vasculature and melanocytes for pigmentation...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28552069/tissue-engineered-skin-and-wound-healing-current-strategies-and-future-directions
#13
Nandana Bhardwaj, Dimple Chouhan, Biman B Mandal
The global volume of skin damage or injuries has major healthcare implications and, accounts for about half of the world's annual expenditure in the healthcare sector. In the last two decades, tissue-engineered skin constructs have shown great promise in the treatment of various skin-related disorders such as deep burns and wounds. The treatment methods for skin replacement and repair have evolved from utilization of autologous epidermal sheets to more complex bilayered cutaneous tissue engineered skin substitutes...
May 25, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28551748/anatomy-and-cell-biology-of-autism-spectrum-disorder-lessons-from-human-genetics
#14
Kristel T E Kleijer, Guillaume Huguet, Julie Tastet, Thomas Bourgeron, J P H Burbach
Until recently autism spectrum disorder (ASD) was regarded as a neurodevelopmental condition with unknown causes and pathogenesis. In the footsteps of the revolution of genome technologies and genetics, and with its high degree of heritability, ASD became the first neuropsychiatric disorder for which clues towards molecular and cellular pathogenesis were uncovered by genetic identification of susceptibility genes. Currently several hundreds of risk genes have been assigned, with a recurrence below 1% in the ASD population...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28516241/innate-immunity-in-alzheimer-s-disease-the-relevance-of-animal-models
#15
REVIEW
Diana K Franco Bocanegra, James A R Nicoll, Delphine Boche
The mouse is one of the organisms most widely used as an animal model in biomedical research, due to the particular ease with which it can be handled and reproduced in laboratory. As a member of the mammalian class, mice share with humans many features regarding metabolic pathways, cell morphology and anatomy. However, important biological differences between mice and humans exist and must be taken into consideration when interpreting research results, to properly translate evidence from experimental studies into information that can be useful for human disease prevention and/or treatment...
May 17, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28467417/anatomy-of-adult-megaphragma-hymenoptera-trichogrammatidae-one-of-the-smallest-insects-and-new-insight-into-insect-miniaturization
#16
Alexey A Polilov
The body size, especially in cases of extreme reduction, is an important characteristic that strongly determines the morphology, physiology, and biology of animals. Miniaturization is a widespread trend in animal evolution and one of the principal directions of evolution in insects. Miniaturization-related features of insect morphology have been subject to intensive studies during the last few years, but the structure of the smallest insects remains insufficiently known. It is especially important to study hymenopterans of the genus Megaphragma, which include the smallest flying insects and a species in which an almost anucleate nervous system was recently discovered...
2017: PloS One
https://www.readbyqxmd.com/read/28447974/3d-whole-heart-myocardial-tissue-analysis
#17
Hans Thijs Van den Broek, Leon De Jong, Pieter A Doevendans, Steven A J Chamuleau, Frebus J Van Slochteren, René Van Es
Cardiac regenerative therapies aim to protect and repair the injured heart in patients with ischemic heart disease. By injecting stem cells or other biologicals that enhance angio- or vasculogenesis into the infarct border zone (IBZ), tissue perfusion is improved, and the myocardium can be protected from further damage. For maximum therapeutic effect, it is hypothesized that the regenerative substance is best delivered to the IBZ. This requires accurate injections and has led to the development of new injection techniques...
April 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28390814/meeting-report-of-the-pathogenesis-of-pemphigus-and-pemphigoid-meeting-in-munich-september-2016
#18
REVIEW
Enno Schmidt, Volker Spindler, Rüdiger Eming, Masayuki Amagai, Frank Antonicelli, John F Baines, Meriem Belheouane, Philippe Bernard, Luca Borradori, Marzia Caproni, Giovanni Di Zenzo, Sergei Grando, Karen Harman, Marcel F Jonkman, Hiroshi Koga, Ralf J Ludwig, Andrew P Kowalczyk, Eliane J Müller, Wataru Nishie, Hendri Pas, Aimee S Payne, Christian D Sadik, Allan Seppänen, Jane Setterfield, Hiroshi Shimizu, Animesh A Sinha, Eli Sprecher, Michael Sticherling, Hideyuki Ujiie, Detlef Zillikens, Michael Hertl, Jens Waschke
Autoimmune blistering diseases are a heterogeneous group of about a dozen complex disorders that are characterized by intraepidermal (pemphigus) and subepidermal blistering (pemphigoid diseases and dermatitis herpetiformis). The Pathogenesis of Pemphigus and Pemphigoid Meeting, organized by the Departments of Dermatology in Lübeck and Marburg and the Institute of Anatomy and Cell Biology, Munich, was held in September 2016 in Munich. The meeting brought together basic scientists and clinicians from all continents dedicating their work to autoimmune blistering diseases...
June 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28349475/visualizing-endogenous-effector-t-cell-egress-from-the-lymph-nodes
#19
Manisha Menon, Alexandre P Benechet, Kamal M Khanna
Local anatomy of lymphoid tissues during infection has emerged as a critical regulator of immunity; thus, studying the cellular choreography in the context of an intact tissue environment in situ is crucial. Following an infection, the local pathogen-specific T cell migration and the subsequent egress of effector T cells from the draining lymph nodes are important and complex biological processes. The mechanisms that regulate this complex process can now be investigated by directly visualizing T cell dynamics in vivo using intravital two-photon (2P) microscopy...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28326682/nervous-system-development-and-regeneration-in-freshwater-planarians
#20
REVIEW
Kelly G Ross, Ko W Currie, Bret J Pearson, Ricardo M Zayas
Planarians have a long history in the fields of developmental and regenerative biology. These animals have also sparked interest in neuroscience due to their neuroanatomy, spectrum of simple behaviors, and especially, their almost unparalleled ability to generate new neurons after any type of injury. Research in adult planarians has revealed that neuronal subtypes homologous to those found in vertebrates are generated from stem cells throughout their lives. This feat is recapitulated after head amputation, wherein animals are capable of regenerating whole brains and regaining complete neural function...
March 22, 2017: Wiley Interdisciplinary Reviews. Developmental Biology
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