Comparative ultrastructure of Mycobacterium leprae and Mycobacterium lepraemurium cell envelopes

Comparative ultrastructure of Mycobacterium leprae and Mycobacterium lepraemurium cell envelopes.

The structural properties of the cell envelopes of Mycobacterium leprae and Mycobacterium lepraemurium were investigated by freeze-fracture, freeze-etching, and negative-staining techniques. Freeze-fracture split the cell wall and exposed the internal features of the peptidoglycolipid mycosidic filamentous network. The cell membrane was also split into two asymmetric faces. The external fractur...

Organized nerve tissue cultures infected with Mycobacterium leprae and Mycobacterium lepraemurium.

Mycobacterium leprae and Mycobacterium lepraemurium infections in domestic and wild animals.

Mycobacterium leprae, the aetiological agent of leprosy in humans, gives rise to a chronic granulomatous disease that affects primarily the skin and peripheral nerves, and secondarily some internal organs such as the testis and the eye; viscera are seldom involved. Depending on host resistance, leprosy may present as a benign disease (tuberculoid leprosy) or as a malignant disease (lepromatous ...

Radiometric studies of Mycobacterium lepraemurium.

The radiometric method has been applied for studying the metabolism of M. lepraemurium and the conditions which might force or inhibit its metabolic activity in vitro. These organisms assimilate and oxidize (U-14C) glycerol, and (U-14C) acetate, but are unable to oxidize (U-14C) glucose, (U-14C) pyruvate, (U-14C) glycine and 14C-formate. When incubated at 30 degrees C M. lepraemurium oxidizes (...

Structure of Mycobacterium leprae.

Introduction : why study structure? Information about the structure of M. leprae may be obtained by microscopy (especially electron miscroscopy) and other physical techniques . There is active development of such techniques , but at present the information they can give about structures as complex as a bac­ terium is l imited . To obtain a detailed knowledge of the molecular composition and con...