Congenital isolated juvenile xanthogranuloma of the sole - a unique case report in a newborn.

Juvenile xanthogranuloma (JXG) is a rare, benign non-Langerhans cell histiocytosis that primarily affects the skin, with infrequent extracutaneous manifestations. Lesions typically emerge during early childhood and often resolve spontaneously, obviating the need for treatment. This paper details the case of a child diagnosed with a solitary JXG on the sole, necessitating surgical excision due to its functional impairment, specifically a delay in walking and weight bearing.

Studies on the most reactive purified antigen for immuno-diagnosis of hydatid disease.

Fourty hydatidosis patients and 36 patients with various parasitic diseases taken from Ain Shams University Hospitals and 15 normal controls as well were subjected to clinical examination, stool and urine examination, serological examination using indirect hemagglutination (IHA), counterimmunoelectrophoresis (CIEP) and enzyme-linked immunosorbent assay (ELISA) tests with crude and partially antigens for hydatidosis. Partial purification of crude hydatid fluid antigen abolished reactions in IHA test, reduced in ELISA or had no effect on cross reactions in the CIEP test. The crude antigen was more sensitive than the purified antigen in all tests applied. Using crude antigen, IHA (83%) was the most sensitive test followed by ELISA (68%) and then CIEP (60%) tests. In case of partially purified hydatid fluid antigen, CIEP was the most sensitive (58%) test with the purified peak I antigen followed by IHA test with peak III (48%) then ELISA with purified peak I (45%). In all serological tests applied, hepatic hydatidosis cases gave the highest reactions followed by cases of combined hepatic and pulmonary infections and then pulmonary cases alone.

Mycoplasma gallisepticum strain differentiation by arbitrary primer PCR (RAPD) fingerprinting.

We demonstrate here that the arbitrary primer polymerase-chain-reaction-based DNA fingerprinting method (also termed random amplified polymorphic DNA or RAPD) can be used to distinguish among strains of the avian pathogen Mycoplasma gallisepticum. Ten base oligonucleotide primers were used individually to prime DNA synthesis from genomic DNAs. Strain-specific arrays of DNA fragments were generated, which allowed us to identify and group isolates. Isolates of M. synoviae, M. gallinarum and M. iners yielded arrays of DNA fragments that differed markedly from those generated from the M. gallisepticum isolates using the same arbitrary primers. These results show that the RAPD fingerprinting method distinguishes genetically different strains of M. gallisepticum and indicates that it should be valuable for monitoring transmission of this pathogen.