Antibiotic-loving bacteria don't just resist drugs, they get a kick out of them
Developing antibiotic resistance has been found to give the disease-causing bacterium E. coli an additional boost, making it grow faster and become fitter after repeated exposure the antibiotic doxycycline.
The mutations that give E. Coli resistance to doxycycline also made them reproduce faster and grow colonies three times larger than ordinary, non-resistant E. Coli. The research is published in the journal Nature Ecology and Evolution.
The researchers exposed E. Coli to eight rounds of antibiotics over four days. In that period, the bacteria gained a number of mutations. One of the mutations was linked to antibiotic resistance, giving the bacteria more pumps to remove the drug from the cell.
The second mutation was to delete a large section of its genome that is normally involved in helping the bacteria coat a surface by forming a 'biofilm'. This section of DNA is actually the remnants of a virus, which causes the cell to split and spill its contents, helping other cells to grow nearby to form a film.
The E. Coli in the study were grown in a liquid culture, in a similar environment to the human bloodstream. Here, without the need to form a biofilm, the E. Coli cut out this section of DNA – which makes up 4% of its genome – when exposed to doxycycline, allowing it to devote its energy to growing faster and forming larger colonies instead. Even when the exposure to doxycycline was stopped, the bacteria did not lose this newly-gained trait.
"We didn't anticipate the viral change at all," study author Robert Beardmore of the University of Exeter told IBTimes UK. "That was much stronger than the pump mutation in evolutionary terms. We saw more strength with selection and a faster change on quite a large chunk of the genome."
This property was not unique to doxycycline, and similar features were found in two different classes of antibiotics, Beardmore said. However, only certain strains of E. Coli gained these mutations when exposed to the antibiotic.
"It's not every antibiotic and it's not every E. Coli, and certainly not every bacterium. But it is pretty strange that that feature is there," Beardmore said. "There's something special about the way doxycycline is inhibiting the cell that causes these features."
Doxycycline is a broad-spectrum antibiotic used for a number of infections, such as chlamydia, Lyme disease, pneumonia and acne. It's also used as a preventative treatment for malaria, and can be taken for months for a trip to a country where the disease is prevalent. This widespread use means the antibiotic can be found in the environment, such as in rivers and soil.
If E. Coli is exposed to doxycycline in the environment, it could quickly develop the mutations to grow larger colonies as well as becoming resistant to the antibiotic, Beardmore said. However, he said that doxycycline should not be dropped as a treatment for various kinds of infection.
"Doxycycline may be a perfectly good drug to treat a range of bacteria with. But when E. Coli comes into contact with it in a river or field, if it's got the right kind of genome then you'll see these effects and doxycycline will boost the growth."
Source: http://www.ibtimes.co.uk/antibiotic-loving-bacteria-dont-just-resist-drugs-they-get-kick-out-them-1603881
what is the cost of viagra tablets in india
generic cialis
power v8 viagra forum
viagra usa
where to get the cheapest cialis
buy generic viagra
how do you know if someone has taken viagra
cheap generic viagra
quando prendere cialis 5 mg
cheap viagra
how long i can use viagra
viagra for men.viagra without prescription
andropausa viagra
viagra pills for sale
cialis and retinal detachment
generic cialis online
viagra preis apotheke deutschland
cheap viagra
red eyes after cialis
generic cialis online
Sunday, June 14, 2026
Cipro: Dosage Guide And Timing Considerations
Taking medication correctly is just as important as choosing the right one. For Cipro (ciprofloxacin), following the prescribed or recommended dosage schedule consistently is essential to achieving and maintaining therapeutic effects. The pharmacokinetic profile of ciprofloxacin determines how quickly it is absorbed, how long it stays active in the body, and how often it needs to be taken. Bacterial infections are among the most common reasons people seek medical care, ranging from minor skin infections and urinary tract infections to serious pneumonia and bloodstream infections. Antibiotics work by targeting structures or processes that are unique to bacteria, such as cell wall synthesis, protein production, or DNA replication, without harming human cells. Selecting the right antibiotic depends on the type of bacteria involved, its sensitivity profile, and the location of the infection in the body. The standard dosing of Cipro varies depending on the condition being treated, the patient's age, weight, and kidney or liver function, and whether it is being used for acute symptom relief or chronic management. Full prescribing and dosage details, including dose adjustments for specific populations such as elderly patients or those with organ impairment, are available at https://mednewwsstoday.com/antibiotics/cipro-ciprofloxacin/. Consistency is key when taking Cipro. Skipping doses or stopping early can reduce the medication's effectiveness or, in some cases, allow the underlying condition to worsen. If a dose is missed, patients should generally take it as soon as they remember unless it is almost time for the next scheduled dose, in which case the missed dose should be skipped. Doubling up to make up for a missed dose is not recommended for most medications. Those seeking comparative information on dosing and safety profiles across medications used for antibiotic treatments can refer to https://mednewwsstoday.com/antibiotics/, where detailed profiles of individual medications in this category are maintained for patient education.
Sunday, June 7, 2026
Dapoxetine - Sexual Health - Patient guide
dapoxetine can be useful medicine, but best results usually come from ordinary routines repeated with care. Doctors use it for patients looking for treatment for premature ejaculation. Strong outcomes usually come from steady use, not guesswork. Patients who track symptoms, timing, and changes around treatment often give clinicians better information for later decisions. For medicine specific background, patients can review https://lucasclinic.com/sexual-health/dapoxetine/. Resource is useful because it explains why treatment should be individualized rather than copied from another person's routine. Daily consistency usually matters. Taking medicine at planned time, keeping updated medication list, and reporting new prescriptions or supplements can prevent small problems from becoming larger ones. Missed doses, sudden schedule changes, or self directed adjustments often create confusion that later looks like treatment failure. Patients should also remember that treatment sits inside sexual health support, not in isolation. Sleep, diet, hydration, activity, and underlying conditions can shape how well plan works. That is why follow up visits should review whole pattern rather than one symptom in a vacuum. Follow through after prescription also matters. Refills should be planned before bottles run low, symptom notes should be brought to visits, and any major change in routine should be mentioned early. Many medication problems are easier to fix when clinician hears about them after first week of trouble rather than after several months of guessing. Patients should know which symptoms are worth quick call. Concerning problems can include dizziness, fainting, severe headache, or ongoing sexual side effects. Even when symptom has other possible causes, early reporting gives clinician better chance to sort out whether medicine, dose, or unrelated illness needs attention. A broader overview of related treatment appears at https://lucasclinic.com/sexual-health/. That perspective can help patients understand why lifestyle support, monitoring, and symptom review remain important alongside prescription itself. Clear expectations, steady routine, and early symptom reporting usually make this treatment safer and easier to manage over time.
Monday, June 1, 2026
Bupropion Treatment Decisions: Formulations, Dosing, and Managing Seizure Risk
Bupropion is available in multiple formulations with different release characteristics, and the decision between these products affects both dosing schedules and safety considerations. Understanding the formulation landscape helps patients and providers choose the product that best fits clinical needs. Immediate-release bupropion requires dosing three times daily because of the drug's relatively short half-life and the need to avoid high single doses that increase seizure risk. Doses of 100 mg three times daily represent the standard, with a maximum of 450 mg total daily not to be exceeded. The multiple daily doses make this formulation less convenient than the sustained and extended-release versions. Sustained-release bupropion allows twice-daily dosing, with individual doses not exceeding 200 mg to manage seizure risk. Total daily doses up to 400 mg are used for depression. This formulation is commonly prescribed and widely available in generic form. Extended-release bupropion formulas allow once-daily dosing, which simplifies adherence. The extended-release design distributes the drug's absorption over many hours, reducing peak plasma concentration for any single dose and associated seizure risk. Total daily doses of up to 450 mg are used once daily in the extended-release products. Seizure risk is the overarching safety consideration that shapes bupropion dosing rules. At recommended doses, seizure risk is low and comparable to other antidepressants. Risk increases meaningfully with doses above approved thresholds and in patients with predisposing conditions including personal history of seizures, eating disorders with purging behavior, heavy alcohol use or abrupt alcohol discontinuation, and head trauma. Prescribers screen for these risk factors before prescribing. The activating nature of bupropion means prescribers typically advise against taking any formulation late in the day because insomnia is a common consequence of evening dosing. Morning dosing or morning-plus-noon dosing patterns for twice-daily regimens are standard recommendations. For attention deficit hyperactivity disorder, bupropion has off-label prescribing history as a third or fourth-line option when first-line stimulant medications are not appropriate or not tolerated. When discontinuing bupropion, abrupt stopping does not produce the severe discontinuation syndrome characteristic of some SSRIs. The dopaminergic and noradrenergic mechanisms of bupropion produce a milder withdrawal profile. Gradual tapering is still advisable given its activating properties. For patients who want to understand how prescribers choose between bupropion formulations and manage clinical risk, reviewing wellbutrin-bupropion treatment decisions provides clinically grounded context. For patients comparing bupropion with SSRIs and other antidepressant classes for specific clinical concerns, the resources at antidepressant medication category guides offer comprehensive information.
Subscribe to:
Posts (Atom)