Chediak-Higashi syndrome is a rare condition characterized by susceptibility to bacterial infections, defective natural killer activity, and episodes of macrophage activation known as accelerated phases. Chemotherapy can induce transient remission of the accelerated phase, but relapses become less and less sensitive to treatment and ultimately lead to death. Allogenic bone marrow transplantatio...

CONTEXT Chédiak-Higashi Syndrome (CHS) is a rare autosomal recessive disease characterized by recurrent infections, giant cytoplasmic granules, and oculocutaneous albinism. OBJECTIVE To describe clinical and laboratory findings from CHS patients. DESIGN Case report. SETTING The patients were admitted into the Allergy and Immunology Unit of the Instituto da Criança, a tertiary public care ...

Multivesicular endosomes are present in virtually every eucaryotic cell, where they arise by intra-endosomal budding of the limiting endosomal membrane. Some genetic diseases such as Chediak-Higashi syndrome are characterized by enlarged membrane-filled endosomes. The same altered endosomal morphology can be observed in cells exposed to certain drugs, for example U18666A. The mechanisms involve...

A 18-month-old girl with a diagnosis of Chediak-Higashi syndrome (CHS) presented with severe bacterial skin infection. Recurrent episodes of bacterial infections began at the age of 2 months. On physical examination, generalized lymphadenopathy, hepatosplenomegaly, skin hypopigmentation, and silvery hair were noted. Bone marrow aspirate revealed prominent granules (top left and right) within th...

The Chediak-Higashi syndrome (CHS) trait is expressed in cultured human skin fibroblasts as an abnormal perinuclear concentration of moderately enlarged lysosomes. The cytoskeleton of CHS fibroblasts appears intact. Microtubules are normal in number and morphology, as assessed by colchicine binding studies, antitubulin immunofluorescence, and electron microscopy. Deformability by shear force is...