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We need to translate Russian news into English, format per rules.
First line: short headline under 90 chars, no markdown, no '#'.
Then blank line, then body split into short paragraphs (2-3 sentences each), separated by blank lines.
Wrap few genuinely important facts — key numbers, percentages, drug/company/gene names, dates — in double asterisks. At most 4-5 per post, never a whole sentence.
Wrap study/journal citations and publication references in single underscores (e.g., Nature Aging, July 2026). There's no explicit citation in the text; maybe none. So we may not need underscores unless we infer a citation? The text doesn't mention a journal. So we likely won't use underscores.
We need to preserve facts, numbers, names, etc. The text mentions: "мю-опиоидных рецепторов (mu opioid receptors)", "синее пятно (locus coeruleus)", "мышей", etc. No numbers except maybe "миллионы взрослых людей". That's a number: millions. Should we wrap "миллионы" in double asterisks? It's a key number. Also maybe "мю-опиоидных рецепторов" is a name; could be wrapped. But we need at most 4-5 double asterisks. Let's select: millions of adults, mu opioid receptors, locus coeruleus, maybe neuropathic pain? Not a number. Could also include "chronic neuropathic pain". But we need to be selective.
We need to avoid wrapping whole sentences. So we wrap only the specific phrase.
Let's craft headline: something like "Brain's 'Brake' Switch Could Turn Off Chronic Neuropathic Pain". Count characters: Let's count: "Brain's 'Brake' Switch Could Turn Off Chronic Neuropathic Pain". Count: Brain's (6 inc apostrophe?), actually let's count precisely: B(1) r2 a3 i4 n5 '6 s7 space8 '9 B10 r11 a12 k13 e14 '15 space16 S17 w18 i19 t20 c21 h22 space23 C24 o25 u26 l27 d28 space29 T30 u31 r32 n33 space34 O35 f36 f37 space38 C39 h40 r41 o42 n43 i44 c45 space46 N47 e48 u49 r50 o51 p52 a53 t54 h55 i56 c57 space58 P59 a60 i61 n62. That's 62 characters. Good under 90.
Now body paragraphs.
We need to split into short paragraphs 2-3 sentences each.
Let's draft translation:
Paragraph 1: Describe the problem: In nerve injury, locus coeruleus switches from natural analgesia to hyperactive generator of chronic neuropathic pain. This affects millions of adults worldwide due to diabetes, viral infections, or nerve compressions; traditional opioids act systemically, cause side effects, addiction.
Paragraph 2: Experiment details: Scientists focused on mu opioid receptors covering locus coeruleus neurons. They deleted these receptors specifically in locus coeruleus cells of mice with nerve injury. Without these biochemical brakes, animals showed heightened hypersensitivity to touch and heat vs controls.
Paragraph 3: Rescue: When mu opioid receptors were precisely restored on the same neurons, hypersensitivity vanished, effectively switching off the pathological pain mechanism. In neuropathic pain, the ability of mu opioid receptors to dampen locus coeruleus hyperactivity is impaired.
Paragraph 4: Future work: Researchers are developing methods to target these local receptors without affecting the rest of the nervous system. Creating pinpoint drugs that selectively activate the "biological brake" in locus coeruleus could shut down chronic pain without systemic addiction risk or toxic side effects.
Now we need to wrap key facts in double asterisks: maybe "millions of adults", "mu opioid receptors", "locus coeruleus", maybe "neuropathic pain"? But neuropathic pain is not a number; still could be considered important fact but maybe we limit to 4-5. Let's choose: millions of adults, mu opioid receptors, locus coeruleus, chronic neuropathic pain? That's 4.
We need to ensure we don't wrap whole sentences. So we wrap only those phrases.
Check each paragraph for those phrases.…
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