It has been hypothesized that the nervous system contributes to the symmetrical response in rheumatoid arthritis. In order to elucidate this, the bilateral concentrations of substance P-like immunoreactivity (SP-LI), neurokinin A-LI (NKA-LI), calcitonin gene-related peptide-LI (CGRP-LI) and neuropeptide Y-LI (NPY-LI) in rat synovial fluid during acute monoarthritis were studied. Equal volumes (...

Adjuvant arthritis in rats, as rheumatoid arthritis in humans, may be of greater or lesser severity, namely polyarthritis and monoarthritis, respectively. The present study was planned to evaluate the oxidative changes in the blood and specifically in the serum albumin of rats with adjuvant-induced mono- and poly-arthritis. Total antioxidant capacity, thiols, carbonyl groups, albumin, uric acid...

BACKGROUND The optimal incubation period for synovial fluid cultures is unknown. OBJECTIVES Our study was designed to determine the positivity rate and time to positivity of synovial fluid cultures from adults with suspected acute bacterial arthritis. METHODS We reviewed the charts of 94 adults who had acute monoarthritis. Patients were classified as low risk or high risk for acute bacteria...

Acute monoarthritis can be the initial manifestation of many joint disorders. The first step in diagnosis is to verify that the source of pain is the joint, not the surrounding soft tissues. The most common causes of monoarthritis are crystals (i.e., gout and pseudogout), trauma, and infection. A careful history and physical examination are important because diagnostic studies frequently are on...

BACKGROUND Malignant arthritis is a rare manifestation of metastatic disease. We describe the case of a previously well 28 year old man in whom hip pain was the presenting symptom of disease. We describe the case and discuss the aetiology of colorectal cancer in young patients. We then review the literature and discuss the investigation and management of malignant joint arthritis. CASE PRESEN...

Septic arthritis and gout are major diseases that should be suspected in patients with acute monoarthritis. These two diseases are clinically similar and often indistinguishable without the help of synovial fluid analysis. Recently, a novel diagnostic rule for gout without synovial fluid analysis was developed and showed relevant performances. This study aimed to determine whether this diagnost...

Chronic pain is associated with N-methyl-D-aspartate (NMDA) receptor activation and downstream production of nitric oxide, which has a pivotal role in multisynaptic local circuit nociceptive processing in the spinal cord. The formation of nitric oxide is catalyzed by three major nitric oxide synthase (NOS) isoforms (neuronal, nNOS; inducible, iNOS; endothelial, eNOS), which are increased in the...