For histological examination, the specimens were fixed in 10% neutral buffered formalin for 7 days, decalcified with 0.25 mol/l EDTA in phosphate-buffered saline (pH 7.4), dehydrated in graded ethanol, and embedded in paraffin wax. Sagittal sections (6 μm thick) were then cut, stained with safranin-O/fast green and haematoxylin and eosin, and examined microscopically. All sections were observed and evaluated by three authors. Histological evaluation of plug cartilage was performed using the modified Mankin's score [38 (link)] (original score proposed by Mankin and coworkers [39 (link)]). The grading system was composed of four categories – cartilage structure (6 points), cartilage cells (3 points), staining (4 points) and tidemark integrity (2 points) – with a highest score of 14 points; normal cartilage scored 0 (Table 1 ) [38 (link)]. When we observed newly formed tissue that covered the plug cartilage, the finding was counted as 'pannus and surface irregularities' (2 points).
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Pannus
Pannus
Pannus is a term used to describe the abnormal growth of tissue, typically over the surface of the eye.
This condition can result in vision impairment and is often associated with inflammatory disorders such as rheumatoid arthritis or autoimmune diseases.
Pannus is characterized by the formation of vascular, fibrovascular, or granulation tissue over the cornea, which can lead to corneal scarring and opacification.
Early detection and management of pannus are crucial to preserve vision and prevent further complications.
Researchers can utilize PubCompare.ai's AI-driven platform to easily locate protocols from literature, pre-prints, and patents, and leverage advanced AI comparisons to identify the best protocols and products for their pannus research.
This powerful tool can enhance reproducibility and accuracy, promoting advances in the understanding and treatment of this ocular condition.
This condition can result in vision impairment and is often associated with inflammatory disorders such as rheumatoid arthritis or autoimmune diseases.
Pannus is characterized by the formation of vascular, fibrovascular, or granulation tissue over the cornea, which can lead to corneal scarring and opacification.
Early detection and management of pannus are crucial to preserve vision and prevent further complications.
Researchers can utilize PubCompare.ai's AI-driven platform to easily locate protocols from literature, pre-prints, and patents, and leverage advanced AI comparisons to identify the best protocols and products for their pannus research.
This powerful tool can enhance reproducibility and accuracy, promoting advances in the understanding and treatment of this ocular condition.
Most cited protocols related to «Pannus»
Cartilage
Chondrocyte
Edetic Acid
Eosin
Ethanol
Fast Green
Formalin
Hematoxylin
Pannus
Paraffin
Phosphates
safranine T
Saline Solution
Tissues
Ankle
Arthritis
aspergillopepsin II
Biological Assay
Bones
Buffers
Cartilage
Cells
Centrifugation
Chemokine
Collagenase
CXCL5 protein, human
Cytokine
Edetic Acid
Enzyme-Linked Immunosorbent Assay
Eosin
Flow Cytometry
Formalin
Hematoxylin
IL10 protein, human
Inflammation
Interleukin-1 beta
Joints
Joints, Ankle
Knee
Knee Joint
Mus
Muscle Tissue
Neutrophil Infiltration
Pannus
Paraffin Embedding
Protease Inhibitors
Proteins
Serum
Tibia
Mice were anaesthetised by ether inhalation on day 3 (acute phase) or day 14 (chronic phase) of arthritis and sacrificed by cervical dislocation. Both knee joints were removed in toto, skinned, fixed in 4.5% phosphate-buffered formalin, decalcified in EDTA, embedded in paraffin, cut into 5 μm thick frontal sections, and stained with hematoxylin-eosin for microscopic examination. Sections were examined by two independent observers (PKP and SH) and graded blindly using a semiquantitative score from 0 to 3 (0, no; 1, mild; 2, moderate; 3, severe alterations) for the extent of: synovial lining layer hyperplasia and infiltration of leukocytes into synovial membrane/joint space (both summarized as inflammation); and pannus formation and necrosis/erosion of cartilage (both summarized as destruction). The final arthritis score was evaluated for each animal by calculating the sum of the values for inflammation and destruction (maximal evaluation grade = 12) as described elsewhere [20 (link)].
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1,1'-(4,4,7,7-tetramethyl-4,7-diazaundecamethylene)bis-4-(3-methyl-2,3-dihydro(benzo-1,3-thiazole)-2-methylidene)quinolinium
Animals
Arthritis
Cartilage
Edetic Acid
Eosin
Ethyl Ether
Formalin
Hyperplasia
Inflammation
Inhalation
Joint Dislocations
Joints
Knee Joint
Leukocytes
Mice, House
Microscopy
Neck
Necrosis
Pannus
Paraffin Embedding
Phosphates
Synovial Membrane
Rats were sacrificed on day 28 to dissect the left hind knee joint. The joints were removed, fixed in formalin, decalcified in 10% ethylenediaminetetraacetic acid (EDTA) and embedded in paraffin for histopathological analysis. Serial paraffin sections were stained with hematoxylin and eosin (H&E).
The severity of arthritis in the joint was graded from 0 to 4 according to the intensity of lining layer hyperplasia, mononuclear cell infiltration and pannus formation, as described previously (0 = normal ankle joint, 1 = normal synovium with occasional mononuclear cells, 2 = definite arthritis with a few layers of flat to rounded synovial lining cells and scattered mononuclear cells and dense infiltration with mononuclear cells, 3 = clear hyperplasia of the synovium with three or more layers of loosely arranged lining cells and dense infiltration with mononuclear cells, 4 = severe synovitis with pannus and erosion of articular cartilage and subchondral bone)22 (link).
The severity of arthritis in the joint was graded from 0 to 4 according to the intensity of lining layer hyperplasia, mononuclear cell infiltration and pannus formation, as described previously (0 = normal ankle joint, 1 = normal synovium with occasional mononuclear cells, 2 = definite arthritis with a few layers of flat to rounded synovial lining cells and scattered mononuclear cells and dense infiltration with mononuclear cells, 3 = clear hyperplasia of the synovium with three or more layers of loosely arranged lining cells and dense infiltration with mononuclear cells, 4 = severe synovitis with pannus and erosion of articular cartilage and subchondral bone)22 (link).
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Arthritis
Bones
Cartilages, Articular
Cells
Edetic Acid
Eosin
Formalin
Hyperplasia
Joints
Joints, Ankle
Knee Joint
Pannus
Paraffin
Paraffin Embedding
Rattus norvegicus
Synovial Membrane
Synoviocytes
Synovitis
Bones
Cartilage
Cell Nucleus
Cells
Chondrocyte
Edetic Acid
Eosin
Hindlimb
Inflammation
Methyl Green
Osteoclasts
Pannus
Paraffin Embedding
safranine T
Talus
Most recents protocols related to «Pannus»
For the study, rats were slaughtered on the 21st day after arthritis induction, and the posterior ankle joints of the right leg of four rats from each group were removed and placed in 10% buffered formalin for 48 h. Then, 10% formic acid was used to decalcify the bones. For two weeks, the solution was changed twice per week, and a surgical blade was used to determine when the decalcification process was complete. Following the decalcification process, samples were washed with phosphate buffer saline (PBS), dried with a graded series of ethanol, and embedded in paraffin wax cubes. After that, 5 mm thick sagittal slices were created and stained with hematoxylin and eosin (H&E). A blind histological examination was performed by a center for pathology including synovitis, cartilage and bone damage. Sections were classified for cartilage degeneration, bone erosion, synovial hyperplasia (pannus development), and inflammation (infiltration of mononuclear cells) using the system described by Sancho et al. [24 (link)]. Each characteristic was rated from 0 to 2, with 0 representing normal, 1 (+) representing mild inflammation, 2 (++) representing moderate inflammation, and 3 (+++) representing severe inflammation. Blood vessels, inflammatory infiltrates, articular cartilage, pannus, and menisci were found in the joint cavity space.
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Arthritis
Blindness
Blood Vessel
Bones
Buffers
Cartilage
Cartilages, Articular
Cells
Cuboid Bone
Dental Caries
Eosin
Ethanol
Formalin
formic acid
Hyperplasia
Inflammation
Joints
Joints, Ankle
Meniscus
Operative Surgical Procedures
Pannus
Paraffin Embedding
Phosphates
Rattus norvegicus
Saline Solution
Synovitis
The paraffin blocks were sagittally sectioned through the medial femoral condyle and the sections were then stained with hematoxylin and eosin (HE), toluidine blue (TB), and Safranin O and fast green (SOFG) solution (Solarbio, Shanghai, China) respectively. The level of cartilage deterioration and severity of knee OA were determined using the OA Research Society International (OARSI) scoring system containing six OA grades and four OA stages and ranging from 0 to 24, and the modified Mankin criteria ranging from 0 to 14 [27 (link),28 (link)]. Synovitis was assessed by HE staining using a modified scoring system, which focused on the pannus formation (score range 0–3), synovial membrane thickening (score range 0–3), and sub-synovial inflammation (score range 0–3) [29 (link)]. The bone volume to tissue volume (BV/TV) ratio, measured using microCT, was used as an index to assess the quality of subchondral bone, while the bone area to tissue area (Ba/Ta) ratio, calculated on two-dimensional slides in histomorphometry, was used as reference [30 (link)]. Image J software was used to calculate the ratio of trabecular bone area and tissue area. All the evaluations were independently performed by two researchers.
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Bones
Bone Tissue
Cancellous Bone
Cartilage
Condyle
Eosin
Fast Green
Femur
Hematoxylin
Inflammation
Knee
Pannus
Paraffin
safranine T
Synovitis
Tissue, Membrane
Tissues
Tolonium Chloride
X-Ray Microtomography
Clinical evaluation, medical history, blood sample data, and transthoracic echocardiography results were collected prospectively by a detailed review of medical records in a blinded fashion by investigators. Traditional cardiovascular risk factors were evaluated according to the respective guidelines. In the present study, patients were followed up for the occurrence of BVD. BVD was detected by clinical hemodynamic valve deterioration (HVD) using a transthoracic echocardiogram, which was defined as an elevated mean transprosthetic gradient (≥30 mm Hg) or at least moderate intraprosthetic regurgitation.10 , 11 Morphological valve leaflet abnormalities, which include thickening and calcification, were also evaluated. To focus on structural valve deterioration related to BVD, worsening prosthetic regurgitation, increased mean gradient attributable to thrombosis or pannus on a leaflet, or infective endocarditis or periprosthetic regurgitation were not classified as HVD. The date of the first detection of HVD was included in the final analysis to determine the occurrence of HVD development.
BLOOD
Calcinosis
Clinical Deterioration
Congenital Abnormality
Echocardiography
Hemodynamics
Infective Endocarditis
Pannus
Patients
Thrombosis
Healthy rats and rats from the CIA trials were euthanized after 21 d of treatment, and their hind paws were collected and fixed in 10% buffered formalin. One paw from each rat was imaged in the Optical Imaging & Vital Microscopy Core at Baylor College of Medicine by Micro-CT using a Bruker SkyScan 1272 Scanner set at 13 µm resolution with no filtering, no averaging, and a rotation step of 0.3. Raw images were analyzed with CTvox (Bruker, MA, US). The other hind paw was decalcified, embedded in paraffin, and sectioned by the Pathology & Histology Core at Baylor College of Medicine. Slides were stained with either hematoxylin and eosin or safranin O/fast green and imaged at 4× magnification on a Nikon Ci-L bright-field microscope (Nikon Inc.) in the Integrated Microscopy Core at Baylor College of Medicine. Scoring of the slides was completed by an investigator blinded to treatment groups using a comprehensive histological scoring system as described elsewhere (54 , 62 (link)), in which cartilage degradation, cartilage erosion, angiogenesis, pannus formation, synovial hyperplasia, and synovial inflammation were evaluated by the following criteria: synovial inflammation: five high-power magnification fields (HMF) were scored for the percentage of infiltrating mononuclear cells (MNC) as follows: 0 = absent, 1 = mild (1 to 10%), 2= moderate (11 to 50%), and 3 = severe (51 to 100%); cartilage erosion and degradation: 0 = absent, 1 = mild (1 to 10%), 2= moderate (11 to 50%), and 3 = severe (51 to 100%); synovial hyperplasia: 0 = absent, 1 = mild (5 to 10 layers), 2 = moderate (11 to 20 layers), and 3 = severe (>20 layers); angiogenesis: the number of vessels was counted in five HMF of synovial tissue, and the mean was used for analyses; extension of pannus formation was based on the reader’s impression (62 (link)).
angiogen
Blood Vessel
Cartilage
Cells
Eosin
Fast Green
Formalin
Hyperplasia
Inflammation
Light Microscopy
Microscopy
Pannus
Paraffin Embedding
Pharmaceutical Preparations
safranine T
Synovial Membrane
X-Ray Microtomography
Knee joints were isolated from rat and fixed with 4% formaldehyde. Calcium in the knee joints was removed using a decalcifying solution for 28 days. At last, the knee joints were embedded in paraffin and coronally sectioned. The sections were stained with safranin O-fast green or hematoxylin & eosin (H&E) and scored according to the Osteoarthritis Research Society International (OARSI) scoring system to determine the extent of cartilage deterioration (McAlindon 2012 (link)). Grade 0 was for intact surface and cartilage; Grade 1 for intact surface only; Grade 2 for surface discontinuity, Grade 3 for vertical fissures; Grade 4 for erosion, Grade 5 for denudation and Grade 6 for deformation.
Histopathological assessment of synovitis was evaluated by enlargement of the synovial lining cell layer and density of the cells. The total synovitis scores were assessed as in the previous study (Lewis et al. 2011 ). Enlargement of the synovial lining cell layer: 0 Point: Thickness 1–2 cells; 1 Point: Thickness 2–4 cells; 2 Points: Thickness 4–9 cells; 3 points: Thickness ≥ 10 cells. Density of the cells: 0 Point: Synovial stroma shows normal cellularity; 1 Point: Cellularity is slightly increased; 2 Points: Cellularity is moderately increased; 3 Points: Cellularity is greatly increased, pannus formation and rheumatoid-like granulomas might occur.
Immunohistochemistry was conducted with anti-IL-6 (1:100, Abmart, PY6087), anti-MMP-3 (1:50, Abcam, ab52915), anti-MMP-13 (1:200, Proteintech, 18165-1), anti-ADAMTS-5 (1:1000, Abmart, TD13268), anti-aggrecan (1:500, Servicebio, GB11373) and anti-collagen-II (1:100, Servicebio, GB11021).
Histopathological assessment of synovitis was evaluated by enlargement of the synovial lining cell layer and density of the cells. The total synovitis scores were assessed as in the previous study (Lewis et al. 2011 ). Enlargement of the synovial lining cell layer: 0 Point: Thickness 1–2 cells; 1 Point: Thickness 2–4 cells; 2 Points: Thickness 4–9 cells; 3 points: Thickness ≥ 10 cells. Density of the cells: 0 Point: Synovial stroma shows normal cellularity; 1 Point: Cellularity is slightly increased; 2 Points: Cellularity is moderately increased; 3 Points: Cellularity is greatly increased, pannus formation and rheumatoid-like granulomas might occur.
Immunohistochemistry was conducted with anti-IL-6 (1:100, Abmart, PY6087), anti-MMP-3 (1:50, Abcam, ab52915), anti-MMP-13 (1:200, Proteintech, 18165-1), anti-ADAMTS-5 (1:1000, Abmart, TD13268), anti-aggrecan (1:500, Servicebio, GB11373) and anti-collagen-II (1:100, Servicebio, GB11021).
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Aggrecans
Calcium
Cartilage
Cell Enlargement
Cells
Collagen
Degenerative Arthritides
Eosin
Fast Green
Formaldehyde
Granuloma
Hematoxylin
Immunohistochemistry
Knee Joint
Matrix Metalloproteinase 3
MMP13 protein, human
Pannus
Paraffin Embedding
safranine T
Synovitis
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More about "Pannus"
Pannus is a term used to describe the abnormal growth of tissue, typically over the surface of the eye.
This ocular condition, also known as corneal pannus, can result in vision impairment and is often associated with inflammatory disorders such as rheumatoid arthritis or autoimmune diseases.
The formation of vascular, fibrovascular, or granulation tissue over the cornea can lead to corneal scarring and opacification, compromising visual acuity.
Early detection and proper management of pannus are crucial to preserve vision and prevent further complications.
Researchers can utilize PubCompare.ai's AI-driven platform to easily locate relevant protocols from literature, pre-prints, and patents, and leverage advanced AI comparisons to identify the best protocols and products for their pannus research.
This powerful tool can enhance reproducibility and accuracy, promoting advancements in the understanding and treatment of this ocular condition.
Researchers may also find it useful to explore related techniques and tools, such as the Axioplan 2 microscope, Toluidine blue staining, Goat anti-HRP polymer kits, Imager M2 imaging systems, Rat anti-mouse F4/80 antibodies, Safranine O-Fast Green staining, Hematoxylin and eosin, QDR Discovery systems, and Weigert's iron hematoxylin, among others, to further enhance their pannus research and investigation.
By leveraging these resources and techniques, researchers can gain deeper insights into the pathogenesis, diagnosis, and management of pannus, ultimately leading to improved patient outcomes.
This ocular condition, also known as corneal pannus, can result in vision impairment and is often associated with inflammatory disorders such as rheumatoid arthritis or autoimmune diseases.
The formation of vascular, fibrovascular, or granulation tissue over the cornea can lead to corneal scarring and opacification, compromising visual acuity.
Early detection and proper management of pannus are crucial to preserve vision and prevent further complications.
Researchers can utilize PubCompare.ai's AI-driven platform to easily locate relevant protocols from literature, pre-prints, and patents, and leverage advanced AI comparisons to identify the best protocols and products for their pannus research.
This powerful tool can enhance reproducibility and accuracy, promoting advancements in the understanding and treatment of this ocular condition.
Researchers may also find it useful to explore related techniques and tools, such as the Axioplan 2 microscope, Toluidine blue staining, Goat anti-HRP polymer kits, Imager M2 imaging systems, Rat anti-mouse F4/80 antibodies, Safranine O-Fast Green staining, Hematoxylin and eosin, QDR Discovery systems, and Weigert's iron hematoxylin, among others, to further enhance their pannus research and investigation.
By leveraging these resources and techniques, researchers can gain deeper insights into the pathogenesis, diagnosis, and management of pannus, ultimately leading to improved patient outcomes.