Detection of Legionella pneumophila antigens in patients' sera using monoclonal antibodies.

نویسندگان

  • Y Normaznah
  • K Saniah
  • A Noor Rain
  • A Norazah
  • M R Azizah
  • P Sabiha
چکیده

Three monoclonal antibodies (McAb) were produced against soluble antigens of Legionella pneumophila serogroup 1 which was cultured on BCYE agar. The McAbs were all of the IgM isotype. The McAbs were used in the McAb-based ELISA for detection of circulating L. pneumophila antigens in 186 sera collected from patients with symptoms and signs suggestive of atypical pneumonia. The normal reference optical (OD) density value of each of the McAbs was determined using 44 sera collected from healthy blood donors. The antigen positivity rates for the McAbs 1C7.2B, 2B2.10F and 2B2.11E were 11.3%, 7.7% and 22.2% respectively. Antigen positivity of the McAb 2B2.10F was significantly higher in the younger age group (p < 0.05). There is no significant association between the antigen positivity with age and sex for all the McAbs. There was no cross-reaction demonstrated between the McAbs with other bacterial antigens.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Immunologic diversity among serogroup 1 Legionella pneumophila urinary antigens demonstrated by monoclonal antibody enzyme-linked immunosorbent assays.

We tested urine specimens from 222 patients with serogroup 1 Legionella pneumophila pneumonia in two enzyme-linked immunosorbent assays (ELISAs) which used different monoclonal antibodies (A and B) as detector antibodies. Of 171 specimens which contained enough antigen to be detected in the ELISAs, 169 reacted in only one of the two assays. A total of 25 patients whose infections were acquired ...

متن کامل

Antigenic lipopolysaccharide components of Legionella pneumophila recognized by monoclonal antibodies: possibilities and limitations for division of the species into serogroups.

Legionella pneumophila accounts for the majority of cases of Legionnaires' disease. By using rabbit antisera, the species has been divided into 14 numbered and 1 unnumbered serogroups. To recognize the antigenic diversity of the lipopolysaccharide (LPS) responsible for this classification, the Dresden Legionella LPS MAb panel, containing 98 monoclonal antibodies (MAbs), was created. Each serogr...

متن کامل

Use of absorbed antisera for demonstration of antigenic variation among strains of Legionella pneumophila serogroup 1.

Antigenic typing of strains of Legionella pneumophila serogroup 1 (Lp1) has been shown to be useful in epidemiological studies of outbreaks of legionellosis. Selective absorption of rabbit antibodies produced against five strains of Lp1 resulted in the recognition of 17 somatic types among the 176 strains tested. A comparison was made of our results and those obtained by McKinney et al. (Zentra...

متن کامل

Immunohistological detection of Legionella pneumophila in lung sections.

Immunohistology was used for the detection of Legionella pneumophila serogroup I in necropsy tissue. Study of pneumonic lung from the recent Stafford outbreak has shown that this technique has a high sensitivity. A retrospective postmortem examination showed that L pneumophila serogroup 1 was an unusual cause of pneumonia in Oxfordshire during the study period. L pneumophila serogroup 1 can be ...

متن کامل

Cross-reactions in IgM ELISA tests to Legionella pneumophila sg1 and Bordetella pertussis among children suspected of legionellosis; potential impact of vaccination against pertussis?

The objective of this study was preliminary evaluation of IgM cross-reaction in sera collected from children hospitalized because of suspected legionellosis. Sera with positive IgM results to L. pneumophila sgs1-7, B. pertussis or with simultaneous detection of IgM antibodies to L. pneumophila sgs1-7 and B. pertussis, or IgM to L. pneumophila sgs1-7 and M. pneumoniae in routine tests, were sele...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • The Malaysian journal of pathology

دوره 20 2  شماره 

صفحات  -

تاریخ انتشار 1998