TY  - JOUR
A1  - Barth, Thomas F. E.
A1  - Herrmann, Tobias S.
A1  - Tappe, Dennis
A1  - Stark, Lorenz
A1  - Grüner, Beate
A1  - Buttenschoen, Klaus
A1  - Hillenbrand, Andreas
A1  - Juchems, Markus
A1  - Henne-Bruns, Doris
A1  - Kern, Petra
A1  - Seitz, Hanns M.
A1  - Möller, Peter
A1  - Rausch, Robert L.
A1  - Kern, Peter
A1  - Deplazes, Peter
T1  - Sensitive and Specific Immunohistochemical Diagnosis of Human Alveolar Echinococcosis with the Monoclonal Antibody Em2G11
JF  - PLoS Neglected Tropical Diseases
N2  - Background: Alveolar echinococcosis (AE) is caused by the metacestode stage of Echinococcus multilocularis. Differential diagnosis with cystic echinococcosis (CE) caused by E. granulosus and AE is challenging. We aimed at improving diagnosis of AE on paraffin sections of infected human tissue by immunohistochemical testing of a specific antibody. 
Methodology/Principal Findings: We have analysed 96 paraffin archived specimens, including 6 cutting needle biopsies and 3 fine needle aspirates, from patients with suspected AE or CE with the monoclonal antibody (mAb) Em2G11 specific for the Em2 antigen of E. multilocularis metacestodes. In human tissue, staining with mAb Em2G11 is highly specific for E. multilocularis metacestodes while no staining is detected in CE lesions. In addition, the antibody detects small particles of E. multilocularis (spems) of less than 1 mm outside the main lesion in necrotic tissue, liver sinusoids and lymphatic tissue most probably caused by shedding of parasitic material. The conventional histological diagnosis based on haematoxylin and eosin and PAS stainings were in accordance with the immunohistological diagnosis using mAb Em2G11 in 90 of 96 samples. In 6 samples conventional subtype diagnosis of echinococcosis had to be adjusted when revised by immunohistology with mAb Em2G11. 
Conclusions/Significance: Immunohistochemistry with the mAb Em2G11 is a new, highly specific and sensitive diagnostic tool for AE. The staining of small particles of E. multilocularis (spems) outside the main lesion including immunocompetent tissue, such as lymph nodes, suggests a systemic effect on the host.
KW  - cells
KW  - multilocularis
KW  - antigen
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-135371
VL  - 6
IS  - 10
ER  - 
TY  - JOUR
A1  - Moremi, Nyambura
A1  - Mshana, Stephen E.
A1  - Kamugisha, Erasmus
A1  - Kataraihya, Johannes B.
A1  - Tappe, Dennis
A1  - Vogel, Ulrich
A1  - Lyamuya, Eligius F.
A1  - Claus, Heike
T1  - Predominance of methicillin resistant Staphylococcus aureus-ST88 and new ST1797 causing wound infection and abscesses
JF  - Journal of Infection in Developing Countries
N2  - Introduction: Although there has been a worldwide emergence and spread of methicillin-resistant Staphylococcus aureus (MRSA), little is known about the molecular epidemiology of MRSA in Tanzania. 
Methodology: In this study, we characterized MRSA strains isolated from clinical specimens at the Bugando Medical Centre, Tanzania, between January and December 2008. Of 160 S. aureus isolates from 600 clinical specimens, 24 (15%) were found to be MRSA. Besides molecular screening for the Panton Valentine leukocidin (PVL) genes by PCR, MRSA strains were further characterized by Multi-Locus Sequence Typing (MLST) and spa typing. 
Results: Despite considerable genetic diversity, the spa types t690 (29.1%) and t7231 (41.6%), as well as the sequence types (ST) 88 (54.2%) and 1797 (29.1%), were dominant among clinical isolates. The PVL genes were detected in 4 isolates; of these, 3 were found in ST 88 and one in ST1820. Resistance to erythromycin, clindamicin, gentamicin, tetracycline and co-trimoxazole was found in 45.8%, 62.5%, 41.6%, 45.8% and 50% of the strains, respectively. 
Conclusion: We present the first thorough typing of MRSA at a Tanzanian hospital. Despite considerable genetic diversity, ST88 was dominant among clinical isolates at the Bugando Medical Centre. Active and standardized surveillance of nosocomial MRSA infection should be conducted in the future to analyse the infection and transmission rates and implement effective control measures.
KW  - Tanzania
KW  - panton-valentine leukocidin
KW  - field gel-electrophoreresis
KW  - molecular epidemiology
KW  - aureus infections
KW  - MRSA
KW  - ST88
KW  - ST1797
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-134746
VL  - 6
IS  - 8
ER  -