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https://www.readbyqxmd.com/read/29148982/a-dentin-derived-hydrogel-bioink-for-3d-printing-of-cell-laden-scaffolds-for-regenerative-dentistry
#1
Avathamsa Athirasala, Anthony Tahayeri, Greeshma Thrivikraman, Cristiane Miranda Franca, Nelson Monteiro, Victor Tran, Jack Ferracane, Luiz Bertassoni
Recent studies in tissue engineering have adopted extracellular matrix (ECM) derived scaffolds as natural and cytocompatible microenvironments for tissue regeneration. The dentin matrix, specifically, has been shown to be associated with a host of soluble and insoluble signaling molecules that can promote odontogenesis. Here, we have developed a novel bioink, blending printable alginate (3% w/v) hydrogels with the soluble and insoluble fractions of the dentin matrix. We have optimized the printing parameters and the concentrations of the individual components of the bioink for print accuracy, cell viability and odontogenic potential...
November 17, 2017: Biofabrication
https://www.readbyqxmd.com/read/29148207/esthetic-evaluation-of-implant-supported-single-crowns-the-implant-restoration-esthetic-index-and-patient-perception
#2
Xiachen Li, Bilin Wu, Xiaohui Cheng, Yiming Li, Xin Xie, Feilong Deng
PURPOSE: To test the validity and reliability of a newly developed Implant Restoration Esthetic Index (IREI) and to compare esthetic outcomes reported by patients and professionals. MATERIALS AND METHODS: Ten graduate students and 10 prosthodontists assessed esthetic outcomes of 27 single-tooth implants with the IREI. Six peri-implant soft tissue parameters were measured using visual analog scales: mesial papilla presence, distal papilla presence, gingival trigone, soft tissue curvature, alveolar process deficiency, and soft tissue color and texture, as well as the six crown parameters: crown contour, crown position, crown labial convexity, crown characterization, crown color and translucency, and abutment visibility...
November 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29145864/intraductal-tubulopapillary-neoplasm-itpn-of-the-pancreas-associated-with-an-invasive-component-a-case-report-with-review-of-the-literature
#3
Stefanie Kuscher, Hartmut Steinle, Afschin Soleiman, Dietmar Öfner, Stefan Schneeberger, Georg Oberhuber
BACKGROUND: Intraductal tubulopapillary neoplasm (ITPN) depicts a distinct entity in the subgroup of premalignant epithelial tumors of the pancreas. Although the histomorphological and immunophenotypical characterization of ITPN has been described by several authors in terms of report of case series in the past, the rarity of that tumor subtype and similarity to other entities still makes identification of ITPN a challenge for radiologists and pathologists. To date, little is known about tubulopapillary carcinoma that can evolve from ITPN...
November 16, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29145401/anatomically-specific-intratubular-and-interstitial-biominerals-in-the-human-renal-medullo-papillary-complex
#4
Ling Chen, Ryan S Hsi, Feifei Yang, Benjamin A Sherer, Marshall L Stoller, Sunita P Ho
Limited information exists on the anatomically-specific early stage events leading to clinically detectable mineral aggregates in the renal papilla. In this study, quantitative multiscale correlative maps of structural, elemental and biochemical properties of whole medullo-papillary complexes from human kidneys were developed. Correlative maps of properties specific to the uriniferous and vascular tubules using high-resolution X-ray computed tomography, scanning and transmission electron microscopy, energy dispersive X-ray spectroscopy, and immunolocalization of noncollagenous proteins (NCPs) along with their association with anatomy specific biominerals were obtained...
2017: PloS One
https://www.readbyqxmd.com/read/29144212/morphological-and-molecular-characterization-of-two-new-species-of-andracantha-acanthocephala-polymorphidae-from-new-zealand-shags-phalacrocoracidae-and-penguins-spheniscidae-with-a-key-to-the-species
#5
B Presswell, M García-Varela, L R Smales
Two new species of Andracantha (Polymorphidae) are described from the intestine of the shags Leucocarbo chalconotus (Gray) and Phalacrocorax punctatus (Sparrman), and the penguin Eudyptula minor (Forster) from southern South Island, New Zealand. Andracantha leucocarboi n. sp. is distinguished from its congeners by having no genital or ventral trunk spines, but possessing a scattering of small spines between the anterior fields of spines. This is the first record of a species of Andracantha from a penguin. Circumbursal papillae are illustrated in a scanning electron micrograph for the first time in the polymorphids...
November 16, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/29140150/radiotherapy-for-cervical-cancer-impact-on-the-vaginal-epithelium-and-sexual-function
#6
Alexandra Hofsjö, Karin Bergmark, Bo Blomgren, Helen Jahren, Nina Bohm-Starke
BACKGROUND: Women who have been treated for cervical cancer have persistent changes in their sexual function, which result in considerable distress. The aim of this study was to investigate the morphology of the vaginal epithelium in cervical cancer survivors treated with radiotherapy and its correlation to serum levels of sex steroid hormones and sexual function. MATERIAL AND METHODS: We included 34 patients treated for cervical cancer with radiotherapy and 37 healthy age-matched control women scheduled for benign gynecological surgery...
November 15, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29139614/human-dental-stem-cell-derived-transgene-free-ipscs-generate-functional-neurons-via-embryoid-body-mediated-and-direct-induction-methods
#7
Ikbale El Ayachi, Jun Zhang, Xiao-Ying Zou, Zongdong Yu, Wei Wei, Kristen M S O'Connell, George T-J Huang
Induced pluripotent stem cells (iPSCs) give rise to neural stem/progenitor cells (NSCs), serving as a good source for neural regeneration. Here, we established transgene-free (TF) iPSCs from dental stem cells (DSCs) and determined their capacity to differentiate into functional neurons in vitro. Generated TF iPSCs from stem cells of apical papilla (SCAP) and dental pulp stem cells (DPSCs) underwent two methods -- embryoid body (EB)-mediated and direct induction, to guide TF-DSC iPSCs along with H9 or H9 Syn-GFP (human embryonic stem cells) into functional neurons in vitro...
November 15, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29138430/extracellular-vesicles-derived-from-mscs-activates-dermal-papilla-cell-in-vitro-and-promotes-hair-follicle-conversion-from-telogen-to-anagen-in-mice
#8
Ramya Lakshmi Rajendran, Prakash Gangadaran, Soon Sun Bak, Ji Min Oh, Senthilkumar Kalimuthu, Ho Won Lee, Se Hwan Baek, Liya Zhu, Young Kwan Sung, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
Hair loss is a common medical problem. In this study, we investigated the proliferation, migration, and growth factor expression of human dermal papilla (DP) cells in the presence or absence of treatment with mesenchymal stem cell extracellular vesicles (MSC-EVs). In addition, we tested the efficacy of MSC-EV treatment on hair growth in an animal model. MSC-EV treatment increased DP cell proliferation and migration, and elevated the levels of Bcl-2, phosphorylated Akt and ERK. In addition; DP cells treated with MSC-EVs displayed increased expression and secretion of VEGF and IGF-1...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133991/nipponnemertes-incainca-sp-n-adoption-of-the-new-taxonomic-proposal-for-nemerteans-nemertea-cratenemertidae
#9
Jaime Gonzalez-Cueto, Lyda R Castro, Sigmer Quiroga
A new species Nipponemertes incainca is described from the intertidal zone of Santa Marta, Colombia. A new recent approach based on both morphological and molecular characters is applied for the description. The main characteristics of the species are: red color, head shield-shaped with a mid-dorsal cephalic ridge, furrows pre-cerebral inconspicuous with few faint ridges orthogonal to furrow axis, two irregular groups of eyespots situated at lateral margins in precerebral cephalic region, proboscis provided with papillae and 12 nerves, stylet smooth supported on an oval basis, and two pouches containing 3-4 accessory stylets each...
2017: ZooKeys
https://www.readbyqxmd.com/read/29133390/recovery-of-taste-organs-and-sensory-function-after-severe-loss-from-hedgehog-smoothened-inhibition-with-cancer-drug-sonidegib
#10
Archana Kumari, Alexandre N Ermilov, Marina Grachtchouk, Andrzej A Dlugosz, Benjamin L Allen, Robert M Bradley, Charlotte M Mistretta
Striking taste disturbances are reported in cancer patients treated with Hedgehog (HH)-pathway inhibitor drugs, including sonidegib (LDE225), which block the HH pathway effector Smoothened (SMO). We tested the potential for molecular, cellular, and functional recovery in mice from the severe disruption of taste-organ biology and taste sensation that follows HH/SMO signaling inhibition. Sonidegib treatment led to rapid loss of taste buds (TB) in both fungiform and circumvallate papillae, including disruption of TB progenitor-cell proliferation and differentiation...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29129979/hair-germ-model-in-vitro-via-human-postnatal-keratinocyte-dermal-papilla-interactions-impact-of-hyaluronic-acid
#11
Ekaterina Kalabusheva, Vasily Terskikh, Ekaterina Vorotelyak
Hair follicle (HF) reconstruction in vitro is a promising field in alopecia treatment and human HF development research. Here, we combined postnatal human dermal papilla (DP) cells and skin epidermal keratinocytes (KCs) in a hanging drop culture to develop an artificial HF germ. The method is based on DP cell hair-inducing properties and KC self-organization. We evaluated two protocols of aggregate assembling. Mixed HF germ-like structures demonstrated the initiation of epithelial-mesenchymal interaction, including WNT pathway activation and expression of follicular markers...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29129525/multicenter-evaluation-of-the-clinical-utility-of-laparoscopy-assisted-ercp-in-patients-with-roux-en-y-gastric-bypass
#12
Ali M Abbas, Andrew T Strong, David L Diehl, Brian C Brauer, Iris H Lee, Rebecca Burbridge, Jaroslav Zivny, Jennifer T Higa, Marcelo Falcão, Ihab I El Hajj, Paul Tarnasky, Brintha K Enestvedt, Alexander R Ende, Adarsh M Thaker, Rishi Pawa, Priya Jamidar, Kartik Sampath, Eduardo Guimarães Hourneaux de Moura, Richard S Kwon, Alejandro L Suarez, Murad Aburajab, Andrew Y Wang, Mohammad H Shakhatreh, Vivek Kaul, Lorna Kang, Thomas E Kowalski, Rahul Pannala, Jeffrey Tokar, A Aziz Aadam, Demetrios Tzimas, Mihir S Wagh, Peter V Draganov, M D The LA-Ercp Research Group Jeffrey Ponsky, Bruce D Greenwald, Lance T Uradomo, Alyson A McGhan, Shahrad Hakimian, Andrew Ross, Stuart Sherman, Benjamin L Bick, Christopher E Forsmark, Dennis Yang, Anand Gupte, Shailendra Chauhan, Steven J Hughes, Karen Saks, Gennadiy Bakis, Adam W Templeton, Michael Saunders, Alireza Sedarat, John A Evans, Thiruvengadam Muniraj, Timothy B Gardner, Almino C Ramos, Marco Aurelio Santo, Andrew Nett, Gregory A Coté, B Joseph Elmunzer, Kulwinder S Dua, Michael J Nosler, Daniel S Strand, Paul Yeaton, Shivangi Kothari, Asad Ullah, Pushpak Taunk, Patrick Brady, Haim Pinkas, Ashley L Faulx, Haroon Shahid, Jordan Holmes, Davinderbir Pannu, Srinadh Komanduri, Juan Carlos Bucobo, Harry Dhaliwal, Alaa Rostom, Brent W Acker
BACKGROUND AND AIMS: The obesity epidemic has led to increased use of Roux-en-Y gastric bypass (RYGB). These patients have an increased incidence of pancreaticobiliary diseases yet standard ERCP is not possible due to surgically altered gastroduodenal anatomy. Laparoscopic-ERCP (LA-ERCP) has been proposed as an option but supporting data are derived from single center small case-series. Therefore, we conducted a large multicenter study to evaluate the feasibility, safety, and outcomes of LA-ERCP...
November 9, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29127729/tips-for-endoscopic-stone-extraction-using-new-short-type-double-balloon-endoscope-for-common-bile-duct-stones-in-patients-with-surgically-altered-gastrointestinal-anatomy
#13
Masaaki Shimatani, Makoto Takaoka, Kazuichi Okazaki
The endoscopic approach to pancreatobiliary diseases in postoperative patients had been difficult (1). Percutaneous or surgical interventions were applied as the first line policy. However, using double balloon endoscopes (DBE), especially the short-type DBE, radically made it practical and safe (2, 3). In this study, endoscopic technical tips using the newly developed short-type DBE (EI-580 BT; FUJIFILM Co, Tokyo, Japan) for stone-extraction via papilla for common bile duct stones in patients with Roux-en Y reconstruction post gastrectomy will be introduced...
November 11, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29127007/mir-3065-5p-regulates-mouse-odontoblastic-differentiation-partially-through-bone-morphogenetic-protein-receptor-type-ii
#14
Chujiao Li, Qian Zhang, Shuaitong Yu, Yuxiu Lin, Shuchen Li, Huan Liu, Zhi Chen
Illumination of the molecular mechanisms regulating odontoblastic differentiation of dental papilla cells is of great significance for proper dentinogenesis and dental pulp regeneration. In this study, we discovered that microRNA (miR)-3065-5p is up-regulated during odontoblastic differentiation. Overexpression of miR-3065-5p promoted odontoblastic differentiation in vitro. Dual luciferase report assay verified that miR-3065-5p could bind to the 3'UTR of bone morphogenetic protein receptor type II (BMPR2), which dramatically increased in the beginning of odontoblastic differentiation but decreased in the terminal differentiation stage...
November 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29126690/evaluation-of-peri-implant-bone-levels-and-soft-tissue-dimensions-around-zirconia-implants-a-three-year-follow-up-study
#15
K Kniha, K A Schlegel, H Kniha, A Modabber, F Hölzle, K Kniha
The aim of this study was to measure bone levels around zirconia implants during follow-up of up to 3 years. Additionally, the effect of clinical contact point positions on the papilla deficit was evaluated. Eighty-one patients with 105 zirconia implants were examined at the 3-year follow-up. Bone levels were measured on the date of implant placement and at 3 months, 1year, and 3 years thereafter. Distances between the first bone-implant contact and the contact point of the crowns and between the bone level at the adjacent tooth and the contact point of the crowns were assessed...
November 7, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29124768/the-peripheral-nervous-system-of-the-ascidian-tadpole-larva-types-of-neurons-and-their-synaptic-networks
#16
Kerrianne Ryan, Zhiuyan Lu, Ian A Meinertzhagen
Physical and chemical cues from the environment are used to direct animal behaviour through a complex network of connections originating in exteroceptors. In chordates, mechanosensory and chemosensory neurons of the peripheral nervous system (PNS) must signal to the motor circuits of the central nervous system (CNS) through a series of pathways that integrate and regulate the output to motor neurons; ultimately these drive contraction of the tail and limb muscles. We used serial-section electron microscopy to reconstruct PNS neurons and their hitherto unknown synaptic networks in the tadpole larva of a sibling chordate, the ascidian, Ciona intestinalis...
November 10, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29122053/associations-of-rumen-parameters-with-feed-efficiency-and-sampling-routine-in-beef-cattle
#17
S Lam, J C Munro, M Zhou, L L Guan, F S Schenkel, M A Steele, S P Miller, Y R Montanholi
Characterizing ruminal parameters in the context of sampling routine and feed efficiency is fundamental to understand the efficiency of feed utilization in the bovine. Therefore, we evaluated microbial and volatile fatty acid (VFA) profiles, rumen papillae epithelial and stratum corneum thickness and rumen pH (RpH) and temperature (RT) in feedlot cattle. In all, 48 cattle (32 steers plus 16 bulls), fed a high moisture corn and haylage-based ration, underwent a productive performance test to determine residual feed intake (RFI) using feed intake, growth, BW and composition traits...
November 10, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29119273/immunohistochemical-distribution-of-ki67-in-epidermis-of-thick-glabrous-skin-of-human-digits
#18
Aleksandar Petrovic, Vladimir Petrovic, Bobana Milojkovic, Ivan Nikolic, Dragan Jovanovic, Aleksandra Antovic, Miroslav Milic
The glabrous skin on the flexor sides of hands and feet, compared to other integument regions, has thicker epidermis and more complex pattern of epidermal ridges, wherefore in microscopy is denominated as thick skin. The epidermis of this skin type has individually unique and permanent superficial patterns, called dermatoglyphics, which are maintained by regenerative potential of deep epidermal rete ridges, that interdigitate with adjacent dermis. Using light microscopy, we analyzed cadaveric big toes thick skin samples, described histology of deep epidermal ridges (intermediate, limiting, and transverse), and quantitatively evidenced their pattern of proliferation by immunohistochemical assessment of Ki67...
November 8, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/29118690/pneumoperitoneum-after-endoscopic-retrograde-cholangiopancreatography-due-to-rupture-of-intrahepatic-bile-ducts-and-glisson-s-capsule-in-hepatic-metastasis-a-case-report-and-review-of-literature
#19
Zubair Khan, Umar Darr, Mohamad Nawras, Muhammad Bawany, Jacob Bieszczad, Osama Alaradi, Ali Nawras
Introduction: Endoscopic retrograde cholangiopancreatography (ERCP) has been proven to be a safe and effective method for diagnosis and treatment of biliary and pancreatic disorders. Major complications of ERCP include pancreatitis, hemorrhage, cholangitis, and duodenal perforation. We report a third case in literature of pneumoperitoneum after ERCP due to rupture of intrahepatic bile ducts and Glisson's capsule in a peripheral hepatic lesion. Case Report: A 50-year-old male with a history of metastatic pancreatic neuroendocrine tumor and who had a partially covered metallic stent placed in the biliary tree 1 year ago presented to the oncology clinic with fatigue, abdominal pain, and hypotension...
September 2017: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/29118635/a-new-species-of-monstrillopsis-crustacea-copepoda-monstrilloida-from-the-lower-northwest-passage-of-the-canadian-arctic
#20
Aurélie Delaforge, Eduardo Suárez-Morales, Wojciech Walkusz, Karley Campbell, C J Mundy
A new species of monstrilloid copepod, Monstrillopsis planifronssp. n., is described from an adult female that was collected beneath snow-covered sea ice during the 2014 Ice Covered Ecosystem - CAMbridge bay Process Study (ICE-CAMPS) in Dease Strait of the Canadian Arctic Archipelago. Currently, up to six species of this order are known to occur in polar latitudes. The new species described herein shares similarities with Monstrillopsis dubia (Scott, 1904) but differs in its body proportions and cephalothorax ornamentation; the cephalothorax is covered by minute scattered papillae on dorsal and ventral surfaces; this species has a reduced fifth leg endopod, fifth leg exopod armed with three setae, antennule with fused segments 3-4, and the genital double-somite bears unique posterolateral processes...
2017: ZooKeys
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