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https://www.readbyqxmd.com/read/28226218/assessing-cartilage-biomechanical-properties-techniques-for-evaluating-the-functional-performance-of-cartilage-in-health-and-disease
#1
Benjamin A Lakin, Brian D Snyder, Mark W Grinstaff
Osteoarthritis (OA) affects millions of people and results in weakened hyaline cartilage due to overloading. During joint articulation, hyaline cartilage must withstand high loads while maintaining low friction to prevent wear and tissue loss. Thus, cartilage compressive stiffness and the coefficient of friction are important indicators of the tissue's functional performance. These mechanical properties are often measured ex vivo using mechanical testing regimens, but arthroscopic handheld probes (e.g., for indentation testing, ultrasound, and optical coherence tomography) and noninvasive imaging modalities (e...
February 2, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28225583/microfluidic-encapsulation-of-human-mesenchymal-stem-cells-for-articular-cartilage-tissue-regeneration
#2
Fanyi Li, Vinh X Truong, Helmut Thissen, Jessica Frith, John S Forsythe
Stem cell injections for the treatment of articular cartilage damage are a promising approach to achieve tissue regeneration. However, this method is encumbered by high cell apoptosis rates, low retention in the cartilage lesion and inefficient chondrogenesis. Here, we have used a facile, very low cost-based microfluidic technique to create visible light-cured hydrogel microparticles composed of gelatin norbornene (GelNB) and a polyethylene glycol (PEG) crosslinker. In addition, we have demonstrated that the process enables the rapid in situ micro-encapsulation of human bone marrow-derived mesenchymal stem cells (hBMSCs) under biocompatible microfluidic-processing conditions for long-term maintenance...
February 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28221217/interobserver-reproducibility-among-gynecologic-pathologists-in-diagnosing-heterologous-osteosarcomatous-component-in-gynecologic-tract-carcinosarcomas
#3
Ankur R Sangoi, Malti Kshirsagar, Andres A Roma, Andrew E Horvai, Mamatha Chivukula, Lora H Ellenson, Oluwole Fadare, Ann K Folkins, Karuna Garg, Krisztina Hanley, Teri A Longacre, Jacqueline Haas, W Glenn McCluggage, Jesse K McKenney, Marisa R Nucci, Esther Oliva, Kay J Park, Vinita Parkash, Charles M Quick, Joseph T Rabban, Joanne K L Rutgers, Robert Soslow, Russell Vang, Anna Yemelyanova, Charles Zaloudek, Andrew H Beck
Distinguishing hyalinized stroma from osteoid production by a heterologous osteosarcomatous component can be challenging in gynecologic tract carcinosarcomas. As heterologous components in a carcinosarcoma may have prognostic and therapeutic implications, it is important that these are recognized. This study examines interobserver reproducibility among gynecologic pathologists in the diagnosis of osteosarcomatous components, and its correlation with expression of the novel antibody SATB2 (marker of osteoblastic differentiation) in these osteosarcomatous foci...
February 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28215741/comparison-of-dietary-inclusion-of-commercial-and-fermented-soybean-meal-on-oxidative-status-and-non-specific-immune-responses-in-white-shrimp-litopenaeus-vannameis
#4
Yu-Hung Lin, Jia-Jinn Mui
This study compared the effects of partial replacement of fish meal (FM) protein with commercial soybean meal (SBM) or Lactobacillus spp. fermented SBM (FSBM) on the oxidative status and non-specific immune responses in white shrimps, Litopenaeus vannamei. A FM-based diet was used as the control. To prepare the two experimental diets, 25% of the FM protein was replaced with SBM and FSBM. Three experimental diets were fed to three groups of shrimps (initial wt: 0.63 ± 0.01 g) in a recirculating rearing system for 12 weeks...
February 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28215353/a-molecular-and-morphological-re-examination-of-the-generic-limits-of-truffles-in-the-tarzetta-geopyxis-lineage-densocarpa-hydnocystis-and-paurocotylis
#5
Leticia M Kumar, Matthew E Smith, Eduardo R Nouhra, Takamichi Orihara, Pablo Sandoval Leiva, Donald H Pfister, David J McLaughlin, James M Trappe, Rosanne A Healy
Truffle species within the /tarzetta-geopyxis lineage share smooth, globose, hyaline spores, but differ in the amount of convolution of hymenia in ascomata. The relationships among truffle species in this lineage have historically been confused. Phylogenetic analyses of the ITS and 28S nuclear ribosomal DNA from recently collected members of the /tarzetta-geopyxis lineage from Asia, Austral Asia, North America, and South America prompted a reinvestigation of species and generic limits in the truffle genera Hydnocystis, Paurocotylis, and Stephensia...
March 2017: Fungal Biology
https://www.readbyqxmd.com/read/28211199/description-and-molecular-phylogeny-of-a-novel-hypotrich-ciliate-from-the-soil-of-marche-region-italy-including-notes-on-the-mosyss-project
#6
Daizy Bharti, Santosh Kumar, Antonietta La Terza
The morphology and morphogenesis during cell division of a new stylonychine hypotrich, Rigidocortex quadrinucleatus n. sp., were investigated using live observation and protargol staining. The new species was isolated from soil samples collected from an organic farm in the Marche Region, Italy, in framework of the MOSYSS project. Rigidocortex quadrinucleatus is characterized as follows: cell size about 180 × 80 μm in vivo; four ellipsoidal macronuclear nodules; 44 adoral membranelles: 18 frontal-ventral-transverse cirri consisting of three frontal, four frontoventral, one buccal, three ventral, two pretransverse and five transverse cirri; dorsal kinety 3 with multiple fragmentation; resting cyst with hyaline ridges...
February 17, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28210945/mr-imaging-evaluation-of-the-postoperative-meniscus
#7
REVIEW
A Russo, R Capasso, C Varelli, A Laporta, M Carbone, G D'Agosto, S Giovine, M Zappia, A Reginelli
MR imaging has been widely evaluated in the assessment of patients with recurrent or residual symptoms following meniscal surgery. Importantly, the causes of such symptoms may relate to failure or complication of the surgical procedure, a possible recurrent or residual meniscal tear, or may be related to other causes of joint symptoms, including tears of the contralateral meniscus, or local hyaline cartilage, or marrow abnormalities subjacent to or distant to the meniscal surgical site. The complex diagnostic issues involved in the MR imaging evaluation of the postoperative meniscus were identified in early MR imaging studies...
February 16, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28210458/osseous-oral-hyaline-ring-granuloma-mimicking-a-mandible-tumor-in-a-child-with-congenital-agenesis-of-the-corpus-callosum
#8
Rodrigo Neves-Silva, Camilla-Borges Ferreira-Gomes, Natalia Palmier, Marcelo Brum-Corrêa, Oslei Paes-Almeida, Marcio Ajudarte-Lopes, Pablo Agustin-Vargas, Alan-Roger Santos-Silva
BACKGROUND: Hyaline ring granuloma (HRG) of the oral cavity is an uncommon disorder considered to be a foreign-body reaction resulting from implantation of food vegetable particles. Microscopically, it is characterized by the presence of structures of hyaline rings in an inflamed fibrous tissue background, which contains multinucleated giant cells. MATERIAL AND METHODS: We present the case of a 4-year-old boy diagnosed with a mandible osseous HRG, which showed clinical and tomographic aspects suggestive of an aggressive bone tumor...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28207431/successful-medical-management-of-presumptive-pythium-insidiosum-keratitis
#9
Muralidhar Ramappa, Ritu Nagpal, Savitri Sharma, Sunita Chaurasia
PURPOSE: To describe the previously unreported successful treatment of presumptive Pythium keratitis (PK) with medical therapy alone. METHODS: A 42-year-old female homemaker presented to us with a 15-day history of pain and redness in the right eye after a trivial injury. Her vision was 20/80 at presentation. Slit-lamp biomicroscopy revealed a central, dense and dry-looking, grayish-white infiltrate reaching mid stroma. The infiltrate had feathery margins and was surrounded by multiple tentacle-like lesions and peripherally expanding pinhead-sized subepithelial lesions...
February 15, 2017: Cornea
https://www.readbyqxmd.com/read/28203411/development-of-a-non-infectious-rat-model-of-acute-exacerbation-of-idiopathic-pulmonary-fibrosis
#10
Shan-Shan Chen, Zhao-Fang Yin, Tao Chen, Hui Qiu, Ya-Ru Wei, Shan-Shan Du, Yue-Ping Jin, Meng-Meng Zhao, Qin Wu, Dong Weng, Hui-Ping Li
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a chronic progressive interstitial lung disease with severe pulmonary fibrosis. The main cause of IPF-associated death is acute exacerbation of IPF (AE-IPF). This study aims to develop a rat model of AE-IPF by two intratracheal perfusions with bleomycin (BLM). METHODS: Ninety male Sprague Dawley (SD) rats were randomized into three groups: an AE-IPF model group (BLM + BLM group), an IPF model group (BLM group), and a normal control group...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28197017/characterization-and-therapeutic-application-of-canine-adipose-mesenchymal-stem-cells-to-treat-elbow-osteoarthritis
#11
Éva Kriston-Pál, Ágnes Czibula, Zoltán Gyuris, Gyula Balka, Antal Seregi, Farkas Sükösd, Miklós Süth, Endre Kiss-Tóth, Lajos Haracska, Ferenc Uher, Éva Monostori
Visceral adipose tissue (AT) obtained from surgical waste during routine ovariectomies was used as a source for isolating canine mesenchymal stem cells (MSCs). As determined by cytofluorimetry, passage 2 cells expressed MSC markers CD44 and CD90 and were negative for lineage-specific markers CD34 and CD45. The cells differentiated toward osteogenic, adipogenic, and chondrogenic directions. With therapeutic aims, 30 dogs (39 joints) suffering from elbow dysplasia (ED) and osteoarthritis (OA) were intra-articularly transplanted with allogeneic MSCs suspended in 0...
January 2017: Canadian Journal of Veterinary Research, Revue Canadienne de Recherche Vétérinaire
https://www.readbyqxmd.com/read/28194374/regenerative-potential-of-the-cartilaginous-tissue-in-mesenchymal-stem-cells-update-limitations-and-challenges
#12
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/28193220/a-rare-case-of-multiple-phosphaturic-mesenchymal-tumors-along-a-tendon-sheath-inducing-osteomalacia
#13
Ryuta Arai, Tomohiro Onodera, Mohamad Alaa Terkawi, Tomoko Mitsuhashi, Eiji Kondo, Norimasa Iwasaki
BACKGROUND: Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome characterized by renal phosphate wasting, hypophosphatemia, reduction of 1,25-dihydroxyl vitamin D, and bone calcification disorders. Tumors associated with TIO are typically phosphaturic mesenchymal tumors that are bone and soft tissue origin and often present as a solitary tumor. The high production of fibroblast growth factor 23 (FGF23) by the tumor is believed to be the causative factor responsible for the impaired renal tubular phosphate reabsorption, hypophosphatemia and osteomalacia...
February 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28191757/cartilage-regeneration-in-osteoarthritic-patients-by-a-composite-of-allogeneic-umbilical-cord-blood-derived-mesenchymal-stem-cells-and-hyaluronate-hydrogel-results-from-a-clinical-trial-for-safety-and-proof-of-concept-with-7-years-of-extended-follow-up
#14
Yong-Beom Park, Chul-Won Ha, Choong-Hee Lee, Young Cheol Yoon, Yong-Geun Park
Few methods are available to regenerate articular cartilage defects in patients with osteoarthritis. We aimed to assess the safety and efficacy of articular cartilage regeneration by a novel medicinal product composed of allogeneic human umbilical cord blood-derived mesenchymal stem cells (hUCB-MSCs). Patients with Kellgren-Lawrence grade 3 osteoarthritis and International Cartilage Repair Society (ICRS) grade 4 cartilage defects were enrolled in this clinical trial. The stem cell-based medicinal product (a composite of culture-expanded allogeneic hUCB-MSCs and hyaluronic acid hydrogel [Cartistem]) was applied to the lesion site...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28187538/first-record-of-the-root-knot-nematode-i-meloidogyne-i-i-minor-i-in-new-zealand-with-description-sequencing-information-and-key-to-known-species-of-i-meloidogyne-i-in-new-zealand
#15
Zeng Qi Zhao, Wellcome Ho, Ruth Griffin, Michael Surrey, Robert Taylor, Lee T Aalders, Nigel L Bell, Yu Mei Xu, Brett J R Alexander
Meloidogyne minor Karssen et al. 2004 was collected from perennial ryegrass (Lolium perenne L.) growing in a sports ground in Christchurch, New Zealand. This is a new record for M. minor, the first report of this nematode occurring in New Zealand, and the second report from the southern hemisphere (after Chile). In general, the New Zealand isolate of M. minor corresponds well to the descriptions of M. minor given by Karssen et al. (2004). The New Zealand isolate is characterized by having a female with dorsally curved stylet, 13-14 μm long, with transversely ovoid knobs slightly sloping backwards from shaft; rounded perineal pattern; and male with stylet 16-19 μm long, large transversely ovoid knobs sloping slightly backwards from shaft; head region not set off, labial disc elevated, lateral lips prominent; and second stage juvenile 370-390 μm long, with hemizonid posterior but adjacent to excretory pore; tail 53-63 μm long; and a distinct hyaline tail terminus 14-18 μm long...
February 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28182789/puerarin-attenuates-cisplatin-induced-rat-nephrotoxicity-the-involvement-of-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway
#16
Xu Ma, Lei Yan, Qing Zhu, Fengmin Shao
Puerarin was a major isoflavonoid derived from the Chinese medical herb radix puerariae (Gegen). In present study effect of puerarin on cisplatin nephrotoxicity was evaluated. Rat model of nephrotoxicity was established by a single intraperitoneal injection of cisplatin (7mg/kg). Puerarin was administrated through caudal vein injection once per day at the dose of 10mg/kg, 30mg/kg and 50mg/kg. Biochemical assays showed that after cisplatin treatment the serum urea and creatinine increased significantly compared with control (P<0...
2017: PloS One
https://www.readbyqxmd.com/read/28182081/cytopathologic-features-of-an-unusual-case-of-multiple-eccrine-spiradenomas-misdiagnosed-as-a-malignant-round-cell-tumor
#17
Bharat Rekhi, Archi Agarwal
A 28-year-old lady presented with multiple swellings in her left shoulder, associated with intermittent pain since last one and a half years. Radiologic imaging revealed multiple, well-defined, subcutaneous lesions in her left supraclavicular region. Fine needle aspiration cytology (FNAC) smears were initially reported as Ewing sarcoma, elsewhere. On review, the smears showed cohesive clusters of round-to-oval cells with scant cytoplasm, which were focally arranged in an acinar-rosetting pattern around hyaline "droplets/bodies," along with few scattered lymphocytes against a background of red blood cells...
January 2017: Journal of Cytology
https://www.readbyqxmd.com/read/28181432/mimicking-hierarchical-complexity-of-the-osteochondral-interface-using-electrospun-silk-bioactive-glass-composites
#18
Joseph Christakiran M, Philip J T Reardon, Rocktotpal Konwarh, Jonathan C Knowles, Biman B Mandal
The anatomical complexity and slow regeneration capacity of hyaline cartilage at the osteochondral interface pose a great challenge in the repair of osteochondral defects (OCD). In this study, we utilized the processing feasibility offered by the sol derived 70S bioactive glass and silk fibroin (mulberry Bombyx mori and endemic Indian non-mulberry Antheraea assama), in fabricating a well-integrated, biomimetic scaffolding matrix with a coherent interface. Differences in surface properties such as wettability and amorphousness between the two silk groups resulted in profound variations in cell attachment and extracellular matrix protein deposition...
February 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28178874/ameliorative-effects-of-pine-bark-extract-on-cisplatin-induced-acute-kidney-injury-in-rats
#19
In-Chul Lee, Je-Won Ko, Sung-Hyeuk Park, Na-Rae Shin, In-Sik Shin, Yun-Bae Kim, Jong-Choon Kim
OBJECTIVE: This study investigated the dose-response effects of pine bark extract (PBE, pycnogenol(®)) on oxidative stress-mediated apoptotic changes induced by cisplatin (Csp) in rats. MATERIALS AND METHODS: The ameliorating potential of PBE was evaluated after orally administering PBE at doses of 10 or 20 mg/kg for 10 days. Acute kidney injury was induced by a single intraperitoneal injection of Csp at 7 mg/kg on test day 5. RESULTS: Csp treatment caused acute kidney injury manifested by elevated levels of serum blood urea nitrogen (BUN) and creatinine (CRE) with corresponding histopathological changes, including degeneration of tubular epithelial cells, hyaline casts in the tubular lumen, and inflammatory cell infiltration (interstitial nephritis)...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28178863/patient-safety-is-not-compromised-by-excluding-microscopic-examination-of-negative-urine-dipstick
#20
Marijana Miler, Nora Nikolac
Background Microscopic examination of samples with negative dipstick results is not necessary. The aims of this study were to: (i) assess the risk of excluding urine sediment examination with negative dipstick results and (ii) calculate time savings by introducing this process. Methods The risk analysis was done for samples with negative urine dipstick and positive sediment findings. Possible missed elements in sediment were defined as 21 errors. Time saving was calculated as average time for preparation and examination sediments...
January 1, 2017: Annals of Clinical Biochemistry
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