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Biomedical subjects

D K Ford

Publications and source records attributed to D K Ford.

At least 37 records · Page 2Linked to original sources
PubMed1987

Persistent synovial lymphocyte responses to cytomegalovirus antigen in some patients with rheumatoid arthritis.

Synovial lymphocytes from 6 of 40 patients with rheumatoid arthritis responded to cytomegalovirus antigen stimulation. 3H-thymidine uptakes were more than 3 times greater than were those of the responses to 13 other microbial antigens. Similar results were obtained in 1 patient on 7 occasions over 17 months, and in the 5 other patients on each of 2 occasions. In 3 of the 6 patients, synovial lymphocyte responses to cytomegalovirus antigen were markedly different from simultaneous peripheral blood lymphocyte responses.

Adult↗
PubMed1986

Further observations on the response of synovial lymphocytes to viral antigens in rheumatoid arthritis.

Synovial lymphocyte responses to viral antigens were measured in repeated tests over periods of up to 3 years in 4 patients with rheumatoid arthritis, one of whom was rheumatoid factor positive. Consistent responses to adenovirus, mumps and cytomegalovirus were demonstrated. Responses of peripheral blood lymphocytes were almost always much less than synovial lymphocyte responses. Synovial lymphocyte phytohemagglutinin responses were greatly reduced and usually less than synovial lymphocyte antigen responses.

Adult↗
PubMed1985

Postpartum rubella immunization: association with development of prolonged arthritis, neurological sequelae, and chronic rubella viremia.

Six women developed chronic long-term arthropathy after postpartum immunization against rubella. All individuals developed acute polyarticular arthritis within 12 days to three weeks postimmunization and have had continuing chronic or recurrent arthralgia or arthritis for two to seven years after vaccination. Acute neurological manifestations, consisting of carpal tunnel syndrome or multiple paresthesiae, developed postvaccination in three women. Two have developed continuing active or chronic recurrent episodes of blurred vision, paresthesiae, and painful limb syndromes together with recurrent joint symptoms. Chronic rubella viremia has been detected in peripheral blood mononuclear cell (MNC) populations in five of the six women up to six years after vaccination. In addition rubella virus was isolated from breast milk MNCs in one individual at nine months postvaccination and from peripheral blood MNCs in two of four breast-fed infants studied at 12-18 months of age. Immune responses to rubella virus studied at sequential intervals after vaccination correlated with development of rheumatologic and neurological manifestations.

Adult↗
PubMed1985

Lymphocytes from the site of disease but not blood lymphocytes indicate the cause of arthritis.

The [3H]thymidine uptake procedure for measuring lymphocyte responses was applied to lymphocytes derived concurrently from synovial effusions and from peripheral blood. The stimulating antigens were crude preparations of those micro-organisms that are related to the enteritis and the non-gonococcal urethritis that precipitate reactive arthritis. Salmonella, shigella, and campylobacter antigens stimulated synovial but not peripheral blood lymphocytes in eight cases of enteric reactive arthritis. Ureaplasma or chlamydia antigens, or both, stimulated synovial lymphocytes in all 12 cases of sexually transmitted reactive arthritis, whereas peripheral blood lymphocytes were only stimulated in four of the 12 cases. In 14 cases of rheumatoid arthritis reactions to either enteric or ureaplasma/chlamydia antigens were minimal from either synovial or peripheral blood lymphocytes. It is concluded that synovial rather than peripheral blood lymphocytes indicate the microbiological cause of reactive arthritis and that similar studies of lymphocytes from the site of local disease might be productive in other diseases.

Adolescent↗
PubMed1985

Sequential studies on synovial lymphocyte stimulation by rubella antigen, and rubella virus isolation in an adult with persistent arthritis.

The response of synovial lymphocytes from a 65-year-old lady with persistent polyarthritis, to rubella antigen and a number of other microbial agents was studied over a period of 11 months by [3H]thymidine incorporation. The results were correlated with the ability to isolate rubella virus from both peripheral blood and synovial fluid during the same period. The patient showed initially a maximal stimulation index to rubella antigen assayed on five occasions over a five-month period. Rubella virus was detected in both peripheral blood and synovial fluid samples on three occasions during this period. Five months later the lymphoproliferative response of her synovial lymphocytes to rubella antigen had dropped to low levels, and virus could no longer be isolated from synovial exudates. At this time the patient's arthritis had become much less active, indicating that a good correlation existed between the presence of rubella virus, local lymphocyte sensitisation, and the inflammatory reaction.

Aged↗
PubMed1984

Arthritis confined to knee joints. Synovial lymphocyte responses to microbial antigens correlate with distribution of HLA.

The responses of synovial lymphocytes to Chlamydia/Ureaplasma and to enteric antigens were studied in 31 patients with arthritis confined to knee joints, 15 patients with sexually-transmitted Reiter's syndrome, 9 with enteric Reiter's syndrome, and 24 with rheumatoid arthritis. The frequency of HLA antigens was studied in 28 patients with knee joint arthritis; this group was characterized by elevated frequencies of HLA-A2 and DR1. A subgroup of 8 responders to Chlamydia/Ureaplasma was characterized by an increase of HLA-Bw44 and DR7 or 8, while a subgroup of 8 responders to enteric antigens was characterized by increases of HLA-A1 and DR5. The frequency of HLA-B27 in the groups responding to antigens was 25-30%, less than half the frequency in patients with Reiter's syndrome.

Adolescent↗
PubMed1983

Observations on the responses of synovial lymphocytes to viral antigens in rheumatoid arthritis and Reiter's syndrome.

The responses of synovial lymphocytes to 12 microbiological antigens, including 8 viral antigens, were studied with the 3H-thymidine uptake procedure in 15 patients with rheumatoid arthritis (RA) and 4 patients with Reiter's syndrome. In 4 patients with rheumatoid factor (RF) negative RA, responses to the paramyxovirus antigens, parainfluenza and respiratory syncytial were marked, with lesser responses to adenovirus and mumps antigens. The synovial lymphocytes of 6 patients with RF titers of greater than or equal to 1:160 showed only minimal antigenic responses.

Adult↗
PubMed1982

Persistent rubella infection and rubella-associated arthritis.

Rubella virus has been isolated from peripheral blood lymphocytes in six out of seven women with rubella-associated arthritis. The arthritis occurred after natural infection (one case) or immunisation with HPV 77 DES vaccine (six cases) and had been present for up to 6 years. The identification of rubella virus was confirmed by plaque/microfocus reduction in the presence of anti-rubella antiserum, and by immunoprecipitation of rubella virus antigens and their analysis on polyacrylamide gels. These women with rubella virus in their lymphocytes did not have abnormal serum antibody levels, but a standard lymphoproliferative assay showed that they had strong cell-mediated immune responses to rubella virus antigens.

Adult↗
PubMed1981

Reiter's syndrome. Evaluation of preliminary criteria for definite disease.

A retrospective evaluation of 83 patients with Reiter's syndrome (RS) and 166 comparison arthritis patients was conducted in order to assess the preliminary criteria for definite RS. Data analysis was based on the statement that Reiter's syndrome consists of an episode of peripheral arthritis of more than 1 month duration occurring in association with urethritis and/or cervicitis. During the initial episode of RS, 70 of the 83 RS patients satisfied the criteria, yielding a sensitivity of 84.3%.

Arthritis↗
PubMed1981

Rubella-associated arthritis: rescue of rubella virus from peripheral blood lymphocytes two years postvaccination.

Rubella virus was isolated from the peripheral lymphocytes of a patient with rubella-associated arthritis 2 years after rubella vaccination. The rescue of the virus was carried out by stimulating the lymphocytes with mitogens for several days in cultures and then cocultivating them with RK13 cells at 35 degrees C. Rubella virus was detected by a variety of techniques, including electron microscopy, indirect immunofluorescence, polyacrylamide gel analysis of labeled viral proteins, and microfocus assay for infectious virus particles. Assessment of the immune status of the patient did not indicate any impairment of immune function associated with long-term persistence of the virus.

Adult↗
PubMed1979

Studies on vaccine-induced rubella arthritis. Serologic findings before and after immunization.

Rubella hemagglutination inhibition (HI) antibody responses were measured before and after immunization with HPV-77 DE/5 vaccine in 7 adult females with recurrent arthritis following rubella immunization and 24 hospital personnel studied prospectively while undergoing routine rubella immunization. The only distinctive serologic characteristic observed in all subjects developing rubella arthritis was a preimmunization HI titer of less than 1 : 8. No association was observed between the development of arthritis after immunization and prolongation of rubella HI IgM responses or elevation of rubella HI IgG responses.

Adult↗