keyword
MENU ▼
Read by QxMD icon Read
search

Infrapatellar

keyword
https://www.readbyqxmd.com/read/29283192/functional-and-phenotypical-analysis-of-il-6-secreting-cd4-t-cells-in-human-adipose-tissue
#1
Anja J de Jong, Sabrina Pollastro, Joanneke C Kwekkeboom, Stefan N Andersen, Annemarie L Dorjée, Aleida M Bakker, Fawaz Alzaid, Antoine Soprani, Rob G H H Nelissen, Jan B Mullers, Nicolas Venteclef, Niek de Vries, Margreet Kloppenburg, René E M Toes, Andreea Ioan-Facsinay
Emerging evidence indicates that a dynamic interplay between the immune system and adipocytes contributes to the disturbed homeostasis in adipose tissue of obese subjects. Recently, we observed IL-6-secretion by CD4+ T cells from the stromal vascular fraction (SVF) of the infrapatellar fat pad (IFP) of knee osteoarthritis patients directly ex vivo. Here we show that human IL-6+ CD4+ T cells from SVF display a more activated phenotype than the IL-6- T cells, as evidenced by the expression of the activation marker CD69...
December 28, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29250706/acid-induced-experimental-knee-pain-and-hyperalgesia-in-healthy-humans
#2
T Asaki, Kelun Wang, Y Luo, T Arendt-Nielsen, T Graven-Nielsen, L Arendt-Nielsen
Inflammation and the related acidity in peri-articular structures may be involved in pain generation and hyperalgesia in knee osteoarthritis. This study investigated pain and associated hyperalgesia provoked by infusion of acidic saline into the infrapatellar fat pad. Twenty-eight subjects participated in two sessions in which acidic saline (AS, pH 5) or neutral saline (NS, pH 7.4) were infused into the infrapatellar fat pad for 15 min. Pain intensity, pain area, mechanical and thermal sensitivity, and maximal voluntary knee extension force were recorded...
December 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29248462/fibroblasts-promote-inflammation-and-pain-via-interleukin-1%C3%AE-induction-of-the-monocyte-chemoattractant-ccl2
#3
Hannah Louise Paish, Nicolas Stewart Kalson, Graham Robert Smith, Alicia Del Carpio Pons, Thomas Edward Baldock, Nicholas Smith, Katarzyna Swist-Szulik, David John Weir, Michelle Bardgett, David John Deehan, Derek Austin Mann, Lee Anthony Borthwick
Fibroblasts persist within fibrotic scar tissue and exhibit considerable phenotypic and functional plasticity. Here, we hypothesized that scar-associated fibroblasts may be a source of stress-induced inflammatory exacerbations and pain. To test this idea we used a human model of surgery-induced fibrosis, total knee arthroplasty (TKA). Using a combination of tissue protein expression profiling and bioinformatics we discovered that many months following TKA the fibrotic joint exists in a state of unresolved chronic inflammation...
December 14, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29244224/osteochondral-repair-using-an-acellular-dermal-matrix-pilot-in-vivo-study-in-a-rabbit-osteochondral-defect-model
#4
Ken Ye, Kathy Traianedes, Shalley A Robins, Peter F M Choong, Damian E Myers
The aim of this pilot project was to introduce a novel use of acellular dermal matrix (ADM) in combination with infrapatellar fat pad mesenchymal stromal cells (IPFP-MSCs) to effect repair in a rabbit osteochondral defect model. ADM, in a range of surgical procedures, has been shown to promote remodelling of tissue at the site of implantation. Rabbit-derived ADM (rabADM) was prepared from the skin of donor rabbits. Autologous IPFP-MSCs were obtained at the time of knee surgery. Osteochondral defects (4mm cartilage outer/2mm central bone defect) were drilled into distal femoral condyles of 12 New Zealand White rabbits...
December 15, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29212384/articular-and-subcutaneous-adipose-tissues-of-rheumatoid-arthritis-patients-represent-equal-sources-of-immunoregulatory-mesenchymal-stem-cells
#5
Urszula Skalska, Ewa Kuca-Warnawin, Anna Kornatka, Iwona Janicka, Urszula Musiałowicz, Tomasz Burakowski, Ewa Kontny
Adipose-derived mesenchymal stem cells (ASCs) have immunoregulatory properties, but their activity is dependent on signals provided by the local microenvironment. It is likely that highly inflammatory milieu of rheumatoid joint affects ASCs activity. To test this hypothesis, the function of rheumatoid ASCs derived from articular adipose tissue (AT-ASCs) and ASCs derived from subcutaneous adipose tissue (Sc-ASCs) has been analysed. Articular adipose tissue (infrapatellar fat pad) and subcutaneous adipose tissue (from the site of skin closure with sutures) were obtained from rheumatoid arthritis (RA) patients undergoing total knee joint replacement surgery...
December 6, 2017: Autoimmunity
https://www.readbyqxmd.com/read/29205448/soft-tissue-masses-of-the-knee-related-to-a-focal-defect-of-the-lateral-patellar-retinaculum
#6
Antoine Moraux, Stefano Bianchi, Thomas le Coroller
We report on the imaging features of 6 soft tissue masses in the anterolateral aspect of the knee related to a focal defect of the lateral patellar retinaculum. In 4 patients (3 female and 1 male; 6-65 years) presenting with nontender palpable soft tissue masses in the anterolateral aspect of their knees, ultrasonography showed a focal defect of the lateral patellar retinaculum with herniation of the Hoffa fat pad, which was only visible in flexion. A magnetic resonance imaging examination performed in 1 case confirmed the defect in the lateral patellar retinaculum but did not show a mass, as the knee was examined only at 10° of flexion...
December 4, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29196647/injectable-nanohydroxyapatite-chitosan-gelatin-micro-scaffolds-induce-regeneration-of-knee-subchondral-bone-lesions
#7
B Wang, W Liu, D Xing, R Li, C Lv, Y Li, X Yan, Y Ke, Y Xu, Y Du, J Lin
Subchondral bone has been identified as an attractive target for KOA. To determine whether a minimally invasive micro-scaffolds could be used to induce regeneration of knee subchondral bone lesions, and to examine the protective effect of subchondral bone regeneration on upper cartilage, a ready-to-use injectable treatment with nanohydroxyapatite-chitosan-gelatin micro-scaffolds (HaCGMs) is proposed. Human-infrapatellar-fat-pad-derived adipose stem cells (IPFP-ASCs) were used as a cellular model to examine the osteo-inductivity and biocompatibility of HaCGMs, which were feasibly obtained with potency for multi-potential differentiations...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29178320/low-oxygen-conditions-promote-synergistic-increases-in-chondrogenesis-during-co-culture-of-human-osteoarthritic-stem-cells-and-chondrocytes
#8
Susan E Critchley, Rajalakshmanan Eswaramoorthy, Daniel J Kelly
There has been increased interest in co-cultures of stem cells and chondrocytes for cartilage tissue engineering as there are the limitations associated with using either cell type alone. Drawbacks associated with the use of chondrocytes include the limited numbers of cells available for isolation from damaged or diseased joints, their dedifferentiation during in vitro expansion and a diminished capacity to synthesise cartilage-specific extracellular matrix components with age and disease. This has motivated the use of adult stem cells with either freshly isolated or culture expanded chondrocytes for cartilage repair applications, however the ideal combination of cells and environmental conditions for promoting robust chondrogenesis remains unclear...
November 26, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29159663/infrapatellar-vs-suprapatellar-approach-to-obtain-an-optimal-insertion-angle-for-intramedullary-nailing-of-tibial-fractures
#9
Joerg Franke, Annika Homeier, Lars Metz, Thilo Wedel, Volker Alt, Sven Spät, Bernd Hohendorff, Reinhard Schnettler
BACKGROUND: During intramedullary nailing of tibial fractures, the insertion angle of the nail is of great importance. When the nail impacts the posterior cortex due to a large insertion angle with a dorsal target course, higher insertion forces are needed, and the danger of iatrogenic fractures increases. Accordingly, the insertion direction should be as parallel as possible to the longitudinal axis of the tibia. We aimed to confirm the hypothesis that intramedullary nailing of tibial fractures can be performed with smaller insertion angles via a suprapatellar approach rather than infrapatellar approach...
November 20, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29156945/modulation-of-gene-expression-in-infrapatellar-fat-pad-derived-mesenchymal-stem-cells-in-osteoarthritis
#10
Beatriz Bravo, Jose Manuel Argüello, Arancha R Gortazar, Francisco Forriol, Javier Vaquero
Aim In the osteoarthritis (OA) disease, all structures of the joint are involved. The infrapatellar Hoffa fat pad is rich in macrophages and granulocytes, which also represents a source of adipose mesenchymal progenitor cells (ASC) cells. In our study, we analyze how OA affects the ability of ASC-derived from Hoffa's fat pad to differentiate into chondrocytes. Material and methodology We took knee Hoffa's pad samples and adipose tissue from the proximal thigh from 6 patients diagnosed with severe OA and from another 6 patients with an anterior cruciate ligament (ACL) rupture without OA...
January 2018: Cartilage
https://www.readbyqxmd.com/read/29141683/pellet-coculture-of-osteoarthritic-chondrocytes-and-infrapatellar-fat-pad-derived-mesenchymal-stem-cells-with-chitosan-hyaluronic-acid-nanoparticles-promotes-chondrogenic-differentiation
#11
Shu Huang, Xiongbo Song, Tao Li, Jingfang Xiao, Yemiao Chen, Xiaoyuan Gong, Weinan Zeng, Liu Yang, Cheng Chen
BACKGROUND: Cell source plays a key role in cell-based cartilage repair and regeneration. Recent efforts in cell coculture have attempted to combine the advantages and negate the drawbacks of the constituent cell types. The aim of this study was to evaluate the chondrogenic outcome of articular chondrocytes (ACs) and infrapatellar fat pad (IPFP)-derived mesenchymal stem cells (MSCs) in direct coculture. METHODS: ACs and IPFP MSCs from the same patients with knee osteoarthritis (OA) were cocultured in monolayer and in pellets...
November 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29127754/-osteoarthritis-as-part-of-metabolic-syndrome
#12
Karel Pavelka
Osteoarthritis (OA) is the most frequent joint disease, whereas etiopathogenesis of OA is not entirely clarified. It is a heterogeneous disorder and genetic as well as biomechanical, endocrine and inflammatory effects may be involved in its origin. The author examines the problems concerning relationships between the metabolic syndrome and OA, and states that the prevalence of metabolic syndrome in patients with OA is higher than in those without OA (59 % vs 23 %). It remains problematic that one of the main components of metabolic syndrome is obesity which in itself is a risk factor for arthrosis development in the weight-bearing joints, not for OA in the hands...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29105354/low-oxygen-conditions-promote-synergistic-increases-in-chondrogenesis-during-co-culture-of-human-osteoarthritic-stem-cells-and-chondrocytes
#13
Susan E Critchley, Rajalakshmanan Eswaramoorthy, Daniel J Kelly
There has been increased interest in co-cultures of stem cells and chondrocytes for cartilage tissue engineering as there are the limitations associated with using either cell type alone. Drawbacks associated with the use of chondrocytes include the limited numbers of cells available for isolation from damaged or diseased joints, their dedifferentiation during in vitro expansion and a diminished capacity to synthesise cartilage-specific extracellular matrix components with age and disease. This has motivated the use of adult stem cells with either freshly isolated or culture expanded chondrocytes for cartilage repair applications, however the ideal combination of cells and environmental conditions for promoting robust chondrogenesis remains unclear...
November 3, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29045182/validity-of-radiograph-based-infrapatellar-fat-pad-opacity-grading-for-assessing-knee-synovitis-correlation-with-contrast-enhanced-mri
#14
Seong Jong Yun, Youngsik Lim, Wook Jin, Yong Sung Park, Sun Hwa Lee, Kyung Nam Ryu
OBJECTIVE: The purpose of this study was to determine the validity of infrapatellar fat pad (IPFP) opacity grading based on lateral knee radiography for assessing knee synovitis using correlation with contrast-enhanced (CE) MRI. MATERIALS AND METHODS: Retrospective reviews of radiographs and CE knee MR images from 79 patients were independently performed by two radiologists. They evaluated IPFP opacity alteration (IPFPCR) and joint effusion grades on lateral knee conventional radiographs, IPFP signal intensity alteration (IPFPMR) and joint effusion grades on CE MR images, and synovitis (SYNMR) grade in nine divided regions, three compartments (parapatellar, periligamentous, perimeniscal), and the whole knee on CE MR images...
December 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29018484/infrapatellar-fat-pad-stem-cells-from-developmental-biology-to-cell-therapy
#15
REVIEW
Ronaldo J F C do Amaral, Henrique V Almeida, Daniel J Kelly, Fergal J O'Brien, Cathal J Kearney
The ideal cell type to be used for cartilage therapy should possess a proven chondrogenic capacity, not cause donor-site morbidity, and should be readily expandable in culture without losing their phenotype. There are several cell sources being investigated to promote cartilage regeneration: mature articular chondrocytes, chondrocyte progenitors, and various stem cells. Most recently, stem cells isolated from joint tissue, such as chondrogenic stem/progenitors from cartilage itself, synovial fluid, synovial membrane, and infrapatellar fat pad (IFP) have gained great attention due to their increased chondrogenic capacity over the bone marrow and subcutaneous adipose-derived stem cells...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28993563/mri-findings-consistent-with-peripatellar-fat-pad-impingement-how-much-related-to-patellofemoral-maltracking
#16
Mohamed Jarraya, Luis E Diaz, Frank W Roemer, William F Arndt, Ajay R Goud, Ali Guermazi
Peripatellar fat pads are intracapsular extrasynovial adipose cushions that accommodate the changing shape and volume of articular spaces during movement. Variations in bone geometry, passive and active stabilization mechanisms and/or functional demands may lead to peripatellar fat pad abnormalities. While peripatellar fat pads may be affected a variety of conditions such as synovial inflammation, tumor and fibrosis, a mechanical origin should also be considered. Commonly, the clinical term "impingement" is used synonymously in the radiological literature to refer to three distinct entities of structural peripatellar fat pad abnormalities: superolateral the infrapatellar fat pad (Hoffa fat pad) edema, suprapatellar fat pad edema, and prepatellar fat pad edema, implying a mechanical origin of these conditions...
October 10, 2017: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28990676/arthroscopic-approach-and-anatomy-of-the-stifle-joint-in-the-rabbit
#17
Sarah Torrey Peters, Markus Wilke, Tanja Schmid
OBJECTIVE: To describe a technique and normal findings for arthroscopy of the stifle in rabbits. STUDY DESIGN: Cadaver study. ANIMALS: Twenty cadaveric stifles from New Zealand White rabbits were examined. METHODS: The arthroscope was placed through a medial portal, and instrument portals were created on the lateral aspect of the joint. The same portals were used for examination of the entire joint and palpation of structures with a probe...
October 9, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28957567/infrapatellar-fat-pad-features-in-osteoarthritis-a-histopathological-and-molecular-study
#18
Marta Favero, Hamza El-Hadi, Elisa Belluzzi, Marnie Granzotto, Andrea Porzionato, Gloria Sarasin, Anna Rambaldo, Claudio Iacobellis, Augusto Cigolotti, Chiara Giulia Fontanella, Arturo Natali, Roberta Ramonda, Pietro Ruggieri, Raffaele De Caro, Roberto Vettor, Marco Rossato, Veronica Macchi
Objective: The infrapatellar fat pad (IFP) is considered a local producer of adipocytokines, suggesting a potential role in OA. The objective of this study was to evaluate the histopathological and molecular characteristics of OA IFPs compared with controls. Methods: The histopathological characteristics of IFPs were evaluated in patients undergoing total knee replacements and in control patients (without OA), considering the following parameters: presence of inflammatory cells, vascularization, adipose lobules dimension and thickness of the interlobular septa...
October 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28906305/risk-of-knee-sepsis-following-treatment-of-open-tibia-fractures-a-multicenter-comparison-of-suprapatellar-and-infrapatellar-approaches
#19
Geoffrey S Marecek, Luke T Nicholson, Frances H Broghammer, Michael Talerico, Caroline Tougas, Derek J Donegan, John A Scolaro
OBJECTIVES: The suprapatellar approach for medullary nailing of the tibia is increasing. This requires intra-articular passage of instruments, which theoretically places the knee at risk for postoperative sepsis in the setting of open fracture. We hypothesized that the risk of knee sepsis is similar after suprapatellar or infrapatellar nailing of open tibia fractures. DESIGN: Retrospective, multicenter. SETTING: Three urban Level-1 trauma centers PATIENTS:: All patients treated with medullary nailing for open diaphyseal tibia fractures (OTA 42) from 2009 to 2015...
September 11, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28888527/complications-following-harvesting-of-patellar-tendon-or-hamstring-tendon-grafts-for-anterior-cruciate-ligament-reconstruction-systematic-review-of-literature
#20
REVIEW
A Hardy, L Casabianca, K Andrieu, L Baverel, T Noailles
Anterior cruciate ligament (ACL) reconstruction can be performed with an autograft, which is most often harvested from the patient's hamstring tendon (HT) or patellar tendon (PT). However, autograft harvesting leads to morbidity that is by no means insignificant. A systematic review of literature was performed to define the incidence of complications related to graft harvesting and the methods to prevent these complications. In March 2017, a systemic review of literature was performed using the keywords"harvesting", "harvest", "morbidity", "complication", "cruciate ligament"...
September 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
keyword
keyword
24772
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"