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tissue regeneration

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https://www.readbyqxmd.com/read/29677225/occlusive-titanium-barrier-for-immediate-bone-augmentation-of-severely-resorbed-alveolar-sockets-with-secondary-soft-tissue-healing-a-2-year-case-series
#1
Fabio Perret, Federica Romano, Francesco Ferrarotti, Mario Aimetti
This case series evaluated bone dimensional changes following the application of an occlusive titanium barrier on severely resorbed fresh extraction sockets to achieve bone regeneration. Six extraction sites with buccal bone loss were filled with a xenograft and covered with a titanium plate fixed by two miniscrews and left intentionally exposed. No infection occurred. After 4 months of healing, sufficient hard tissue had formed to allow implant insertion. Mean vertical bone gain was 7.3 ± 2.2 mm at the buccal side and 4...
April 20, 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29676520/chip-based-high-resolution-tandem-mass-spectrometric-determination-of-fibroblast-growth-factor-chondroitin-sulfate-disaccharides-noncovalent-interaction
#2
Adrian C Robu, Laurentiu Popescu, Daniela G Seidler, Alina D Zamfir
Fibroblast growth factor-2 (FGF-2) is involved in wound healing and embryonic development. Glycosaminoglycans (GAGs), the major components of the extracellular matrix (ECM), play fundamental roles at this level. FGF-GAG noncovalent interactions are in the focus of research, due to their influence upon cell proliferation and tissue regeneration. Lately, high resolution mass spectrometry (MS) coupled with chip-nanoelectrospray (nanoESI) contributed a significant progress in glycosaminoglycomics by discoveries related to novel species and their characterization...
April 20, 2018: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/29675756/nodular-macroregenerative-tissue-as-a-pattern-of-regeneration-in-cholangiopathic-disorders
#3
Preston Roberts, Andrew T Trout, Jonathan R Dillman
BACKGROUND: Published case series have described central hepatic macroregenerative nodules or masses as a common feature of Alagille syndrome. Our experience suggests this regenerative pattern can be seen more generally in cholangiopathic disorders. OBJECTIVE: To define the frequency of central regenerative tissue in Alagille syndrome and other cholangiopathic disorders and to describe the typical appearance of such regenerative tissue. MATERIALS AND METHODS: We conducted a retrospective study of CT and MR imaging performed in children and young adults with cholangiopathic disorders between January 2000 and June 2016...
April 19, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29675492/endometrial-mesenchymal-stem-stromal-cells-in-mature-and-immature-sheep-an-in-vitro-study
#4
Farnaz Ghobadi, Farhad Rahmanifar, Davood Mehrabani, Amin Tamadon, Mehdi Dianatpour, Shahrokh Zare, Iman Razeghian Jahromi
Background: Endometrial mesenchymal stem stromal cells (EnMSCs) are critical for uterine function, repair, and regeneration. Objective: This study introduced isolation technique of EnMSCs and compared the characteristics of EnMSCs in mature and immature ewes. Materials and Methods: Endometrial tissue samples from the uterus of 10 ewes were collected from the slaughterhouse. Endometrial cells were isolated from tissue using cold incubation and then chopping and treating was performed with collagenase type I...
February 2018: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29674645/long-noncoding-rna-tug1-facilitates-osteogenic-differentiation-of-periodontal-ligament-stem-cells-via-interacting-with-lin28a
#5
Qin He, Shuangyan Yang, Xiuge Gu, Mengying Li, Chunling Wang, Fulan Wei
Periodontal ligament stem cells (PDLSCs) are mesenchymal stem cells derived from dental tissues with multidirectional differentiation potential and excellent self-renewing ability. Recently, long noncoding RNAs (lncRNAs) have been shown to play important roles in MSC osteogenic differentiation. In this study, we found that taurine upregulated gene 1 (TUG1), an evolutionarily conserved and widely present lncRNA was significantly upregulated in osteogenically induced PDLSCs compared to their undifferentiated counterparts...
April 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29674624/brain-and-spinal-cord-injury-repair-by-implantation-of-human-neural-progenitor-cells-seeded-onto-polymer-scaffolds
#6
Jeong Eun Shin, Kwangsoo Jung, Miri Kim, Kyujin Hwang, Haejin Lee, Il-Sun Kim, Bae Hwan Lee, Il-Shin Lee, Kook In Park
Hypoxic-ischemic (HI) brain injury and spinal cord injury (SCI) lead to extensive tissue loss and axonal degeneration. The combined application of the polymer scaffold and neural progenitor cells (NPCs) has been reported to enhance neural repair, protection and regeneration through multiple modes of action following neural injury. This study investigated the reparative ability and therapeutic potentials of biological bridges composed of human fetal brain-derived NPCs seeded upon poly(glycolic acid)-based scaffold implanted into the infarction cavity of a neonatal HI brain injury or the hemisection cavity in an adult SCI...
April 20, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29674611/inhibition-of-dll4-notch1-pathway-promotes-angiogenesis-of-masquelet-s-induced-membrane-in-rats
#7
Qian Tang, Haimin Jin, Minji Tong, Gang Zheng, Zhongjie Xie, Shangkun Tang, Jialei Jin, Ping Shang, Huazi Xu, Liyan Shen, Yu Zhang, Haixiao Liu
The Masquelet's induced membrane technique for repairing bone defects has been demonstrated to be a promising treatment strategy. Previous studies have shown that the vessel density of induced membrane is decreased in the late stage of membrane formation, which consequently disrupts the bone healing process. However, relatively little is known about certain mechanisms of vessel degeneration in the induced membrane tissue and whether promotion of angiogenesis in induced membranes can improve bone regeneration...
April 20, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29674451/fully-reduced-hmgb1-accelerates-the-regeneration-of-multiple-tissues-by-transitioning-stem-cells-to-g-alert
#8
Geoffrey Lee, Ana Isabel Espirito Santo, Stefan Zwingenberger, Lawrence Cai, Thomas Vogl, Marc Feldmann, Nicole J Horwood, James K Chan, Jagdeep Nanchahal
A major discovery of recent decades has been the existence of stem cells and their potential to repair many, if not most, tissues. With the aging population, many attempts have been made to use exogenous stem cells to promote tissue repair, so far with limited success. An alternative approach, which may be more effective and far less costly, is to promote tissue regeneration by targeting endogenous stem cells. However, ways of enhancing endogenous stem cell function remain poorly defined. Injury leads to the release of danger signals which are known to modulate the immune response, but their role in stem cell-mediated repair in vivo remains to be clarified...
April 19, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29673841/electrospun-silk-fibroin-fibers-for-storage-and-controlled-release-of-human-platelet-lysate
#9
Cataldo Pignatelli, Giovanni Perotto, Marta Nardini, Ranieri Cancedda, Maddalena Mastrogiacomo, Athanassia Athanassiou
Human platelet lysate (hPL) is a pool of growth factors and cytokines able to induce regeneration of different tissues. Despite its good potentiality as therapeutic tool for regenerative medicine applications, hPL has been only moderately exploited in this field. A more widespread adoption has been limited because of its rapid degradation at room temperature that decreases its functionality. Another limiting factor for its extensive use is the difficulty of handling the hPL gels. In this work, silk fibroin-based patches were developed to address several points: improving the handling of hPL, enabling their delivery in a controlled manner and facilitating their storage by creating a device ready to use with expanded shelf life...
April 16, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29673840/versatile-effects-of-magnesium-hydroxide-nanoparticles-in-plga-scaffold-mediated-chondrogenesis
#10
Kwang-Sook Park, Byoung-Ju Kim, Eugene Lih, Wooram Park, Soo-Hong Lee, Yoon Ki Joung, Dong Keun Han
Artificial scaffolds made up of various synthetic biodegradable polymers have been reported to have many advantages including cheap manufacturing, easy scale up, high mechanical strength, convenient manipulation, and molding into an unlimited variety of shapes. However, the synthetic biodegradable polymers still have the insufficiency for cartilage regeneration owing to their acidic degradation products. To reduce acidification by degradation of synthetic polymers, we incorporated magnesium hydroxide (MH) nanoparticles into porous polymer scaffold not only to effectively neutralize the acidic hydrolysate but also to minimize the structural disturbance of scaffolds...
April 16, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29673838/piezoelectric-materials-as-stimulatory-biomedical-materials-and-scaffolds-for-bone-repair
#11
REVIEW
Biranche Tandon, Jonny J Blaker, Sarah H Cartmell
The process of bone repair and regeneration requires multiple physiological cues including biochemical, electrical and mechanical - that act together to ensure functional recovery. Myriad materials have been explored as bioactive scaffolds to deliver these cues locally to the damage site, amongst these piezoelectric materials have demonstrated significant potential for tissue engineering and regeneration, especially for bone repair. Piezoelectric materials have been widely explored for power generation and harvesting, structural health monitoring, and use in biomedical devices...
April 16, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29672725/down-regulated-expression-of-magnesium-transporter-genes-following-a-high-magnesium-diet-attenuates-sciatic-nerve-crush-injury
#12
Ying-Ju Chen, Fu-Chou Cheng, Chun-Jung Chen, Hong-Lin Su, Meei-Ling Sheu, Jason Sheehan, Hung-Chuan Pan
BACKGROUND: Magnesium supplementation has potential for use in nerve regeneration. The expression of some magnesium transporter genes is reflective of the intracellular magnesium levels. OBJECTIVE: To assess the expression of various magnesium transporter genes as they relate to neurological alterations in a sciatic nerve injury model. METHODS: Sciatic nerve injury was induced in rats, which were then fed either basal or high magnesium diets...
April 17, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29671367/3d-bio-printing-technology-for-body-tissues-and-organs-regeneration
#13
Esmaeil Biazar, Masoumeh Najafi S, Saeed Heidari K, Meysam Yazdankhah, Ataollah Rafiei, Dariush Biazar
In the last decade, the use of new technologies in the reconstruction of body tissues has greatly developed. Utilising stem cell technology, nanotechnology and scaffolding design has created new opportunities in tissue regeneration. The use of accurate engineering design in the creation of scaffolds, including 3D printers, has been widely considered. Three-dimensional printers, especially high precision bio-printers, have opened up a new way in the design of 3D tissue engineering scaffolds. In this article, a review of the latest applications of this technology in this promising area has been addressed...
April 19, 2018: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/29670834/hybrid-scaffolds-of-hyaluronic-acid-and-collagen-loaded-with-prednisolone-an-interesting-system-for-osteoarthritis
#14
Farhad Mohammadi, Soliman Mohammadi Samani, Nader Tanideh, Fatemeh Ahmadi
Purpose: Cartilage regeneration by using polymeric scaffolds is a new option for treatment of osteoarthritis. A good scaffold for tissue engineering should copy the characteristics of natural extracellular matrix. The purpose of this study was to make a dosage form with proper reliability and stability for cartilage repair. Methods: Hybrid scaffolds containing different ratios of hyaluronic acid (HA) and collagen were prepared and loaded with prednisolone as anti-inflammatory agent. Two different dosage forms (lyophilized implantable disk and thermo-sensitive gels) were examined...
March 2018: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29670709/comparative-study-of-the-osteogenic-potential-of-mesenchymal-stem-cells-derived-from-different-sources
#15
Iman M Aboushady, Zeinab A Salem, Dina Sabry, Abbas Mohamed
Background: Mesenchymal stem cells (MSCs) can regenerate missing tissues and treat diseases. Hence, the current work aimed to compare the proliferation rate and the osteogenic differentiation potential of bone marrow MSCs (BMSCs), gingival MSCs (GMSCs) and submandibular MSCs (SMSCs). Material and Methods: MSCs derived from bone marrow, gingiva and submandibular salivary gland were isolated and cultured from rats. The proliferation capacity was judged by MTT proliferation Assay...
January 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29670253/cryopreservation-of-fish-spermatogonial-cells-the-future-of-natural-history-collections
#16
Mary M Hagedorn, Jonathan P Daly, Virginia L Carter, Kathleen S Cole, Zeehan Jaafar, Claire V A Lager, Lynne R Parenti
As global biodiversity declines, the value of biological collections increases. Cryopreserved diploid spermatogonial cells meet two goals: to yield high-quality molecular sequence data; and to regenerate new individuals, hence potentially countering species extinction. Cryopreserved spermatogonial cells that allow for such mitigative measures are not currently in natural history museum collections because there are no standard protocols to collect them. Vertebrate specimens, especially fishes, are traditionally formalin-fixed and alcohol-preserved which makes them ideal for morphological studies and as museum vouchers, but inadequate for molecular sequence data...
April 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29669500/%C3%AE-cell-regenerative-potential-of-selected-herbal-extracts-in-alloxan-induced-diabetic-rats
#17
Anoja Priyadarshani Attanayake, Kamani Ayoma Perera Wijewardana Jayatilaka, Lakmini Kumari Boralugoda Mudduwa, Chitra Pathirana
Effective β-cell regeneration is a recognized therapeutic strategy in the treatment of type 1 diabetes mellitus. Regeneration of β-cells could be achieved via exogenous natural sources as medicinal plant extracts. Medicinal plants selected for the investigation were Spondias pinnata (Linn. f.) Kurz, Coccinia grandis (L.) Voigt and Gmelina arborea Roxb. The objective was to determine the β-cell regenerative potential of these plant extracts in alloxan induced diabetic rats. Alloxan monohydrate was used to induce diabetes (150 mg/kg, ip)...
April 18, 2018: Current Drug Discovery Technologies
https://www.readbyqxmd.com/read/29669331/previous-exercise-effects-in-cisplatin-induced-renal-lesions-in-rats
#18
Heloísa D C Francescato, Lucas F Almeida, Natany G Reis, Camila M Faleiros, Marcelo Papoti, Roberto S Costa, Terezila M Coimbra
BACKGROUND/AIMS: Physical training has beneficial effects on endothelial function and can influence the regeneration of the endothelial cell. We investigated the effect of physical training on cisplatin (CP)-induced acute kidney injury and assessed the impact of training on endothelial structure and function, and on the inflammatory processes in rats. METHODS: We injected male Wistar rats subjected to previous physical training in treadmill running (trained, TR) or not (sedentary, SED) with CP (5 mg/kg) (TR+CP and SED+CP groups, respectively)...
April 13, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29668776/muscle-regeneration-through-therapy-with-estromal-stem-cells-in-injury-of-infraespinhosus-muscle-of-sheep
#19
Aline Grama Moreira Brandão, Angélica Consalter, Juliana da Silva Leite, Helia Zamprogno, Ana Maria Reis Ferreira
PURPOSE: To evaluate the effects of rotator cuff muscle regeneration in sheep and establish an experimental model for the use of autologous stem cells as a treatment option for tendon injuries. METHODS: Infrared muscle tenotomies and Penrose drain implantation were performed on 12 shoulders of six clinically healthy adult sheep. After 60 days, the tendons were submitted to tissue repair, drainage removal, and divided into two groups according to the use of autologous stromal stem cells for treatment...
March 2018: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29667905/essential-role-of-mohawk-for-tenogenic-tissue-homeostasis-including-spinal-disc-and-periodontal-ligament
#20
Ryo Nakamichi, Kensuke Kataoka, Hiroshi Asahara
Tendons and ligaments play essential roles in connecting muscle and bone and stabilizing the connections between bones. The damage to tendons and ligaments caused by aging, injury, and arthritis induces the dysfunction of the musculoskeletal system and reduces the quality of life. Current therapy for damaged tendons and ligaments depends on self-repair; however, it is difficult to reconstruct normal tissue. Regeneration therapy for tendons and ligaments has not been achieved, partly because the mechanism, cell biology, and pathophysiology of tendon and ligament development remain unclear...
April 18, 2018: Modern Rheumatology
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