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Eagle's syndrome: one cause, many problems. Presentation of a series of clinical cases with headaches and increased risk of stroke
Arch Med Sci. 2022 Aug 30;18(5):1420-1422. doi: 10.5114/aoms/152753. eCollection 2022.NO ABSTRACTPMID:36160348 | PMC:PMC9479714 | DOI:10.5114/aoms/152753
Source: Archives of Medical Science - September 26, 2022 Category: Biomedical Science Authors: Katarzyna Stopi ńska Izabela Domitrz Source Type: research

Risk of peripheral artery disease and stroke in migraineurs with or without aura: a nationwide population-based cohort study
Conclusion: Migraineurs without established cardiovascular disease had a significantly increased risk of PAD and stroke, and the risk of stroke persists in migraineurs with or without aura, with an increased trend of PAD in migraineurs with aura. Our study result should remind clinical physicians of the risk of PAD in the future among migraineurs even without established cardiovascular disease currently, and screening for PAD and stroke may be needed in caring patients with migraine.PMID:35919822 | PMC:PMC9339415 | DOI:10.7150/ijms.72119
Source: International Journal of Medical Sciences - August 3, 2022 Category: Biomedical Science Authors: Wun-Zhih Siao Chun-Hung Su Yu-Hsiang Kuan Tung-Han Tsai Kuang-Hua Huan Chien-Ying Lee Source Type: research

CADASIL mutations sensitize the brain to ischemia via spreading depolarizations and abnormal extracellular potassium homeostasis
Cerebral autosomal dominant arteriopathy, subcortical infarcts, and leukoencephalopathy (CADASIL) is the most common monogenic form of small vessel disease characterized by migraine with aura, leukoaraiosis, strokes, and dementia. CADASIL mutations cause cerebrovascular dysfunction in both animal models and humans. Here, we showed that 2 different human CADASIL mutations (Notch3 R90C or R169C) worsen ischemic stroke outcomes in transgenic mice; this was explained by the higher blood flow threshold to maintain tissue viability compared with that in wild type (WT) mice. Both mutants developed larger infarcts and worse neurol...
Source: Journal of Clinical Investigation - April 15, 2022 Category: Biomedical Science Authors: Fumiaki Oka, Jeong Hyun Lee, Izumi Yuzawa, Mei Li, Daniel von Bornstaedt, Katharina Eikermann-Haerter, Tao Qin, David Y. Chung, Homa Sadeghian, Jessica L. Seidel, Takahiko Imai, Doga Vuralli, Rosangela M. Platt, Mark T. Nelson, Anne Joutel, Sava Sakadzic, Source Type: research

Hyperexcitable interneurons trigger cortical spreading depression in an Scn1a migraine model
Cortical spreading depression (CSD), a wave of depolarization followed by depression of cortical activity, is a pathophysiological process implicated in migraine with aura and various other brain pathologies, such as ischemic stroke and traumatic brain injury. To gain insight into the pathophysiology of CSD, we generated a mouse model for a severe monogenic subtype of migraine with aura, familial hemiplegic migraine type 3 (FHM3). FHM3 is caused by mutations in SCN1A, encoding the voltage-gated Na+ channel NaV1.1 predominantly expressed in inhibitory interneurons. Homozygous Scn1aL1649Q knock-in mice died prematurely, wher...
Source: Journal of Clinical Investigation - November 1, 2021 Category: Biomedical Science Authors: Eva Auffenberg, Ulrike B.S. Hedrich, Raffaella Barbieri, Daniela Miely, Bernhard Groschup, Thomas V. Wuttke, Niklas Vogel, Philipp Lührs, Ilaria Zanardi, Sara Bertelli, Nadine Spielmann, Valerie Gailus-Durner, Helmut Fuchs, Martin Hrabě de Angelis, Mich Source Type: research

Initiation of migraine-related cortical spreading depolarization by hyperactivity of GABAergic neurons and NaV1.1 channels
Spreading depolarizations (SDs) are involved in migraine, epilepsy, stroke, traumatic brain injury, and subarachnoid hemorrhage. However, the cellular origin and specific differential mechanisms are not clear. Increased glutamatergic activity is thought to be the key factor for generating cortical spreading depression (CSD), a pathological mechanism of migraine. Here, we show that acute pharmacological activation of NaV1.1 (the main Na+ channel of interneurons) or optogenetic-induced hyperactivity of GABAergic interneurons is sufficient to ignite CSD in the neocortex by spiking-generated extracellular K+ build-up. Neither ...
Source: Journal of Clinical Investigation - November 1, 2021 Category: Biomedical Science Authors: Oana Chever, Sarah Zerimech, Paolo Scalmani, Louisiane Lemaire, Lara Pizzamiglio, Alexandre Loucif, Marion Ayrault, Martin Krupa, Mathieu Desroches, Fabrice Duprat, Isabelle Léna, Sandrine Cestèle, Massimo Mantegazza Source Type: research

Automatic Classification of the Korean Triage Acuity Scale in Simulated Emergency Rooms Using Speech Recognition and Natural Language Processing: a Proof of Concept Study
CONCLUSION: We demonstrated the potential of an automatic KTAS classification system using speech recognition models, machine learning and BERT-based classifiers.PMID:34254471 | DOI:10.3346/jkms.2021.36.e175
Source: Journal of Korean Medical Science - July 13, 2021 Category: Biomedical Science Authors: Dongkyun Kim Jaehoon Oh Heeju Im Myeongseong Yoon Jiwoo Park Joohyun Lee Source Type: research

Very late complications of oncotherapy in glioblastoma patients: A case series.
CONCLUSION: All stroke-like syndromes are diagnoses of exclusion. To avoid misinterpretation of imaging findings as glioblastoma recurrence and avert recall oncotherapy or redundant interventions, better understanding of delayed complications of brain tumor therapy is crucial. PMID: 33612837 [PubMed - as supplied by publisher]
Source: Biomedical Papers of the Medical Faculty of the Univ Palacky Olomouc Czech Repub - February 23, 2021 Category: Biomedical Science Tags: Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub Source Type: research

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