Frozen chemistry controls bacterial infections
By sciencedaily.com
Chemists and molecular biologists have made an unexpected discovery in infection biology. The researchers can now show that two proteins that bind to one another slow down a chemical reaction central to the course of the disease in the bacteria Yersinia pseudotuberculosis. The results have been published in the Journal of Biological Chemistry.
"The discovery paves way for new insights in the regulation of bacterial virulence. The results have given us a new opportunity to study the pathogenic ability in bacteria," says Magnus Wolf-Watz, researcher at the Department of Chemistry at Umeå University, who led the study together with Hans Wolf-Watz, professor at the Department of Molecular Biology.
Yersinia pseudotuberculosis and many similar bacteria infect humans by injecting toxins, so-called effector proteins, through a needle-like organelle called injectisome. Previous research has already shown that the protein YscU plays an important part in the regulation of effector protein transportation. YscU is unique in its ability to cleave itself in two parts, as a consequence, one of these parts is then transported out through the injectisome.
By combining biological experiments with studies on atomic level, the research team discovered that another protein, YscP, binds to YscU and regulates its self-cleaving abilities. When the proteins bound to one another, the speed of the self-cleaving was greatly reduced.
"The chemical process behind the self-cleaving was cooled down by the interaction and was hence slowed down. The result is a good example of how biology and chemistry nearly always go hand in hand and is a huge step forward. This gives us new opportunities to study the regulation of the course of diseases," says Hans Wolf-Watz.
The studies on atomic level were conducted using magnetic resonance spectroscopy at the Department of Chemistry at the NMR for Life platform, which is a national infrastructure for NMR in Sweden.
"The initial investment to fund an NMR instrument that the Kempe Foundations facilitated paved way for further funding from both the Wallenberg Foundations and SciLifeLab. Also, the protein expertise platform in our labs was of crucial importance for undertaking the research project," says Magnus Wolf-Watz.
Source: https://www.sciencedaily.com/releases/2017/03/170303100420.htm
Saturday, June 6, 2026
Finasteride (Propecia) - Prostate Health - Patient guide - What to expect
Using propecia finasteride safely usually depends on clear expectations, steady follow up, and realistic daily routines. It is commonly used for patients treating hair loss or prostate related concerns. Main goal is not fast drama, but reliable improvement over time. Some patients notice benefit quickly, while others need dose adjustment, patience, or related lifestyle changes before progress becomes obvious. Patients who want basic orientation can review https://lucasclinic.com/prostate-health/propecia-finasteride/. Material like that is useful because it frames medicine inside real care decisions: when to take it, what changes deserve attention, and why follow up often matters more than casual online advice. Most medication trouble starts with ordinary disruption. Travel, illness, poor sleep, new over the counter products, or inconsistent timing can all affect results. Keeping routine stable gives clinicians cleaner picture when they decide whether treatment is helping. Patients should also remember that treatment sits inside prostate care, 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. Safety planning should stay simple and direct. Patients should report breast changes, persistent sexual side effects, or mood decline rather than assuming body will sort everything out. Fast communication often prevents avoidable urgent visits. General guidance for this medication category is collected at https://lucasclinic.com/prostate-health/. That broader view can support better questions at next visit and more realistic expectations between visits. Patients rarely need perfect routine, but they do need honest reporting, steady habits, and enough follow up to catch problems before they grow.
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