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段落1

This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?

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It's well known that antibiotics can disrupt our gut bacteria.

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But when mosquitoes snack on blood laced with antibiotics, the same can happen to their microbiome.

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And that depletion of gut bacteria actually increases mosquitoes' susceptibility to the malaria parasite.

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Meaning they may be more likely to host and then spread the disease-causing protozoan.

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That's according to a study in the journal Nature Communications.

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Researchers fed mosquitoes the blood of children infected with the malaria parasite.

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They added a penicillin-streptomycin antibiotic cocktail to some samples, and a control solution to others.

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Turns out the mosquitoes that sucked the blood doped with antibiotics were more likely to pick up the parasite.

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And those mosquitoes appeared to gain some benefit from the antibiotics too,

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they lived longer and had more offspring than the other mosquitoes in the tests.

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So these commonly used antibiotics made the insects a more powerful vector for malaria.

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Some antibiotics, of course, do inhibit malaria transmission.

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Doxycycline, for example, is sometimes taken as a malaria prophylactic.

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"Different antibiotics may have different impacts.

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Which could translate into an opposite effect than what we demonstrated in the paper."

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Study author George Christophides, of Imperial College London.

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He says this interaction is especially worth considering for patients with malaria as well as tuberculosis or HIV,

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because treatment of those conditions can involve receiving antibiotics for months.

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"TB and HIV prevalence in malaria-endemic countries is huge.

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So if all these people are taking antibiotics, we must know what they do on malaria transmission."

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Christophides and his colleagues are now investigating those connections,

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to make sure certain antibiotics don't turn the mosquito into a whole new kind of 'superbug.'

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Thanks for the minute, for Scientific American's 60-Second Science.I'm Christopher Intagliata.

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