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Brain imaging reveals connection between dopamine levels and chronic depression in young women

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  • 2025-10-02 01:56 event
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Brain imaging reveals connection between dopamine levels and chronic depression in young women
A new brain imaging study led by researchers in the Department of Psychiatry and Behavioral Health in the Renaissance School of Medicine (RSOM) at Stony Brook University, and published in JAMA Network Open, uses a specialized type of magnetic resonance imaging (MRI) technique named neuromelanin-sensitive MRI to shed light on the link between chronic depression and the neurotransmitter dopamine. Dopamine plays important roles in many cognitive, emotional, and bodily functions and is a central cellular component to the reward/motivation system of the brain.

21. Diabetes drug may protect against kidney inflammation

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A new Northwestern Medicine study has shed light on how a class of diabetes drugs may protect the kidneys—not just by lowering blood sugar, but by triggering a molecular shift that dampens inflammation, according to a study published in The Journal of Clinical Investigation.

22. Alzheimer's protein holds clues for fighting cancer

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At first glance, Alzheimer's disease and cancer have little in common. One erodes memory, while the other consumes the body. Yet researchers at MUSC Hollings Cancer Center have discovered an unexpected link connecting the two.

23. Hormone deficiency makes the brain more flexible than expected

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Erythropoietin (EPO) is primarily known to many as a hormone for blood formation. However, it has been known for some years that EPO also plays an important role in the brain—specifically where particularly demanding mental performance takes place.

24. Alzheimer's disease medication shows promise for improving social impairment in some youth with autism

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Some people with autism spectrum disorder (ASD) have abnormal levels of glutamate in the brain. New research led by Mass General Brigham has focused on this neuron-activating chemical, suggesting that a glutamate-modulating drug called memantine may improve social functioning in youth with ASD who do not have intellectual disabilities.

25. Genetic 'Trojan horse' selectively kills cancer cells linked to Kaposi's sarcoma

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In a preclinical study, UC Davis Comprehensive Cancer Center scientists have developed a highly targeted gene therapy that could revolutionize treatment for cancers linked to a common herpesvirus, with minimal side effects.

26. Stem cell studies could pave way for regenerating lost teeth

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Two distinct stem cell lineages that drive tooth root and alveolar bone formation have been identified by researchers from Science Tokyo. Using genetically modified mice and lineage-tracing techniques, the team has shed light on the cell signaling mechanisms guiding differentiation in stem cells in the developing teeth, offering key insights for future regenerative dental therapies.

27. Pain tolerance found to increase during social interaction in VR

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For years, virtual reality (VR) has been used in pain management for hospitalized adults and children, to take their minds off their discomfort, but typically the technology has been a solo experience for the patient.

28. Longevity research: Dietary stress supports healthy aging

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Certain nutrients in food can trigger a mild stress response in nematodes. But instead of making them sick, this actually helps them stay healthier as they age, according to researchers at the University of Basel, Switzerland.

29. Scientists design peptide 'switch' that keeps Parkinson's protein in its healthy form

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Researchers at the University of Bath, in collaboration with the Universities of Oxford and Bristol, have developed a molecule that prevents the clumping and build-up of a protein linked to Parkinson's disease and related dementias. The team has successfully demonstrated it works in an animal model of Parkinson's and hopes that in the future this could lead to a treatment that slows the progression of the disease.

30. Brain imaging reveals connection between dopamine levels and chronic depression in young women

  • 4 hours ago schedule
  • medicalxpress.com language

A new brain imaging study led by researchers in the Department of Psychiatry and Behavioral Health in the Renaissance School of Medicine (RSOM) at Stony Brook University, and published in JAMA Network Open, uses a specialized type of magnetic resonance imaging (MRI) technique named neuromelanin-sensitive MRI to shed light on the link between chronic depression and the neurotransmitter dopamine. Dopamine plays important roles in many cognitive, emotional, and bodily functions and is a central cellular component to the reward/motivation system of the brain.

31. Brain shape changes could offer early warning signs of dementia

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A new study led by University of California, Irvine's Center for the Neurobiology of Learning and Memory researchers found that aging changes the brain's overall shape in measurable ways. Instead of focusing only on the size of specific regions, the team used a new analytic method to see how the brain's form shifts and distorts over time.

32. Weight-loss surgery could help boost work productivity

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A new international QUT-led study found that bariatric surgery improves work productivity and employment rates in the short term—but these gains may not last beyond five years without targeted support.

33. Herpes virus-based vaccine shows promise in targeting tumors without side effects

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The Herpes simplex virus is a widespread virus that often causes cold sores, and most people carry it. By removing a virulence gene, i.e. a gene that makes the virus harmful to humans, the herpes virus can be repurposed as a cancer vaccine. This modification prevents the virus from harming healthy tissue while allowing it to target cancer cells, which function differently from normal cells. These findings are presented in a new doctoral thesis at Åbo Akademi University, Finland.

34. Analysis of NRG trial in limited-stage small cell lung cancer suggests QOL benefit with twice- vs. once-daily radiation

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Previously, the primary endpoint results of the NRG-LU005 study assessing the addition of the immunotherapy drug atezolizumab to standard of care concurrent chemoradiation for limited-state small cell lung cancer were reported at the American Society for Radiation Oncology 2024 Annual Meeting.

35. Trial analysis shows improvement in survival outcomes for glioblastoma patients receiving proton therapy

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Previously, results from the photon cohort of the NRG-BN001, a signal seeking Phase II randomized trial, indicated that photon radiation dose intensification (75 Gy) did not demonstrate improvement in overall survival (OS) for patients with newly diagnosed glioblastoma (GBM).

36. Report highlights barriers to demand-responsive transport for people with poor health

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Demand-responsive transport (DRT) is promoted as an inclusive solution to first- and last-mile mobility challenges, but little is known about the barriers to adoption among people with poor health.

37. Huntingtin protein arranges cytoskeletal filaments, offering insight into neurodegeneration

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Huntington's disease is a rare genetic disorder and a representative neurodegenerative disease, characterized by loss of motor control, cognitive decline, and psychiatric problems. An international research team has discovered that the "huntingtin protein," the causal protein of Huntington's disease (whose mutations are the direct cause of the disease), also performs a new function: directly organizing the cytoskeleton, the fine structural framework inside cells.

38. Workplace culture transformation yields wide-ranging benefits

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A concerted effort to improve the workplace culture at a California hospital produced a variety of significant improvements, with an impact far beyond the initial goals, according to an article in Critical Care Nurse.

39. More men die of overdoses partly because many combine alcohol with drugs

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Research conducted at West Virginia University suggests consuming alcohol with fentanyl and other drugs may explain, in part, why more men than women die from unintentional overdoses.

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