Impaired vision Photophobia Albinism of the OCA2 type, giving a lighter complexion than unaffected family members [6] Silvery sheen to hair which may be fair in colour Frequent infections (skin, mucous membranes, respiratory) Epilepsy Mental retardation Enlarged liver and spleen Jaundice Ataxia causing incoordination and a typical ataxic gait Tremor Epilepsy Peripheral neuropathy causing motor ...

In vivo and in vitro studies of granulocyte chemotaxis were performed in three patients with the Chediak-Higashi syndrome. Rebuck skin windows showed a decreased accumulation of leukocytes at an inflammatory site. Studies in Boyden chambers documented a cellular defect in granulocyte chemotaxis. The chemotactic response of Chediak-Higashi cells by this technique averaged approximately 40% of no...

The addition of cholinergic agents and cyclic 3'5'-guanosine monophosphate (cGMP) to polymorphonuclear leukocytes in vitro from a patient with Chediak-Higashi syndrome corrected the impaired release of the lysosomal enzyme, beta-glucuronidase, to normal. Coinciding with the improvement in degranulation, the bactericidal capacity was enhanced to normal. Similar concentrations of cholinergic agen...

Chédiak-Higashi syndrome in man and the beige mutation of mice are phenotypically similar disorders that have profound effects upon lysosome and melanosome morphology and function. We isolated two murine yeast artificial chromosomes (YACs) that, when introduced into beige mouse fibroblasts, complement the beige mutation. The complementing YACs exist as extrachromosomal elements that are amplifi...

A 2 -year-old girl presented to us with recurrent infections, hepato splenomegaly, and photophobia. On examination she had blond hair with a metallic sheen. The blood smear showed giant lysosomes in the white blood cells (fi gure) and we diagnosed Chediak-Higashi syndrome, a rare autosomal recessive disease (gene CHS1/LYST at 1q42.1-2). There have been around 200 cases reported, and giant cytop...

Platelet function studies were performed on two patients with the Chediak-Higashi syndrome, one of whom had a history of easy bruising unrelated to thrombocytopenia. Both patients had prolonged bleeding times, abnormal platelet aggregation, and a defect of platelet storage granules, manifested by reduced platelet ADP, an increased ATP/ADP ratio, increased adenine nucleotide specific radioactivi...

Chediak-Higashi Syndrome (CHS) is a rare autosomal recessive disorder, characterized by silver hair, recurrent infections, partial oculo-cutaneous albinism, mild coagulation defect and progressive neuropathy. The characteristic feature of CHS is the presence of huge lysosomes and cytoplasmic inclusions within different body cells like the white blood cells. The disease has an early onset but us...