penyakit sendi degenaratif dan inflamatif
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Setyo Purwono
Bag. Farmakologi & Terapi , FK - UGM
PIT PENYAKIT DALAM DESEMBER 2013
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Arthritis(from Greek arthro-, joint + -itis, inflammation) is a form of joint disorder that
involves inflammation of one or more joints.
CollinsDictionary.com. Collins English Dictionary – Complete & Unabridged 11th Edition.
The most common form :
osteoarthritis
(degenerative joint
disease),
is a result of trauma to the
joint, infection of the joint,
or age.
Other arthritis forms :
• rheumatoid arthritis,
psoriatic arthritis,
related autoimmune
diseases.
Septic arthritis is caused
by joint infection.
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the common symptoms for all arthritis disorders
varied levels of pain,
swelling,
joint stiffness,
sometimes a constant ache around the joint(s).
The pain from arthritis is due to
inflammation that occurs around the joint,
damage to the joint from disease,
daily wear and tear of joint
muscle strains caused by forceful movements
against stiff painful joints and fatigue.
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Osteoarthritis Rheumatoid arthritis
Speed of onset Months Weeks-months[16]
Main locations Weight-bearing joints (such as
knees, hips, vertebral column) and
hands
Hands (proximal interphalangeal and
metacarpophalangeal joint) wrists,
ankles and knees
Inflammation May occur, though often mild
compared to inflammation in
rheumatoid arthritis
Yes
Radiologic changes Narrowed joint space
Osteophytes
Local osteosclerosis
Laboratory findings None Anemia, elevated ESR and C-reactive
protein (CRP), rheumatoid factor, anti-
citrullinated protein antibody
Other features No systemic signs
Bouchard's and Heberden's nodes
Ulnar deviation, swan neck- and
Boutonniere deformity of the hand
Extra-articular features are common
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Complex cellular interplay in synovial joint.
In osteoarthritic state, aberrantly activated chondrocytes produce ECM-degrading
proteases (MMPs, aggrecanases), pro-inflammatory cytokines (e.g. IL-1), and
catabolic growth factors (e.g. FGF-2).
These proteins can be secreted into synovial fluid, and subsequently act upon
synoviocytes.
Fragments derived from ECM degradation (e.g. Fn-f) are also present in the synovial
fluid as catabolic inducers.
In OA, a subpopulation of chondrocytes undergoes hypertrophic changes, as
manifested by their expression of type X collagen.
Chondrocytes may also upregulate apoptosis, resulting in diminished local cellularity.
In response to cartilage loss, pathological remodeling of subchondral bone gives rise
to sclerosis and osteophyte formation.
Synoviocytes (fibroblasts and macrophages) also actively synthesize proteases and
cytokines which can negatively effect on the articular cartilage and synovium.
• Pathophysiological changes in synoviocytes pave the way for angiogenesis and
innervations, which may account for OA pain.
Adapted from S. B. Abramson and M. Attur, Arthritis Res Ther 2009;11(3):227.
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Inflammatory mediators in osteoarthritis
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Damage-associated molecular patterns (DAMPs) in osteoarthritis.
Molecules implicated in the innate immune response within the damaged joint, each potentially contributing to the chronic inflammation observed in OA
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Schematic representation of chronic inflammation as a mediator of osteoarthritis.
damage-associated molecular patterns (DAMPs), cartilage extracellular matrix (ECM), fibroblast-like synoviocytes (FLS)
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