'Alala live on in Hawaiian forest

Article Abstract:

The National Academy of Sciences advised that the 11 native Hawaiian 'alala crows surviving in the wild be allowed to remain at the McCandless ranch on the Big Island but that the ranch owners should allow researchers to remove the females' first clutch of eggs each spring for hatching at a breeding colony. The National Audubon Society's Hawaiian branch had sued the US Fish and Wildlife Service for not protecting the birds, whose scientific name is Corvus hawaiiensis; the ranchers had refused to admit researchers on the grounds that not interfering with the birds is the best means of saving them.

Cases, Reports, Natural history, Endangered species, Protection and preservation, Hawaii, National Academy of Sciences, Rare birds, National Audubon Society

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Drug-resistant TB may bring epidemic

Article Abstract:

Tuberculosis (TB) has re-emerged as a threat due to the mounting incidence of antibiotic-resistant strains of its causative bacillus, Mycobacterium tuberculosis (M. tb.). TB is particularly dangerous among the poor and homeless people of New York, NY, Los Angeles, CA, and other large cities because crowding and the lack of medical care help the disease to spread and make it difficult to treat. Basic research is essential to finding out how antibiotics lose the ability to kill certain M. tb. strains

Drug therapy, Tuberculosis, Mycobacterium tuberculosis

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Reducing antibiotic resistance

Article Abstract:

The belief that less frequent antibiotic use will reduce the number of antibiotic-resistant strains is based on the strains' reduced fitness due to decreased peptide chain elongation rates. However, cultures of streptomycin-resistant mutants with wild type bacteria over 135 generations demonstrates that the resistant bacteria rapidly mutates to compensate for its lack of fitness and the final culture is resistant not sensitive as previously supposed.

Genetic aspects, Bacteria

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