Neurodegenerativní onemocnění patří mezi nejzávažnější zdravotní problémy, které postihují miliony lidí na celém světě, a jejich výskyt dramaticky roste spolu s prodlužující se délkou života. Tato onemocnění jsou heterogenní skupinou chronických, progresivních poruch charakterizovaných postupnou ztrátou neuronů v centrálním nervovém systému, což vede k deficitu specifických mozkových funkcí. Nejčastějšími neurodegenerativními onemocněními jsou Alzheimerova choroba, Parkinsonova choroba, amyotrofická laterální skleróza, roztroušená skleróza a Huntingtonova choroba. Terapie těchto onemocnění je zatím většinou pouze symptomatická, proto pokračuje intenzivní výzkum a hledání nových terapií a nových léčiv. Řada studií prokázala zdraví prospěšné vlastnosti přírodních produktů jako potenciálních terapeutik proti neurodegeneraci. Takovým přírodním produktem může být také rostlina z čeledi mákovitých, rohatec růžkatý (Glaucium corniculatum), jehož obsahové látky působí neuroprotektivně a inhibují enzymy acetylcholinesterázu a butyrylcholinesterázu.

Neurodegenerative diseases are among the most serious health problems affecting millions of people worldwide, and their incidence is increasing dramatically with increasing life expectancy. These diseases are a heterogeneous group of chronic, progressive disorders characterized by gradual loss of neurons in the central nervous system, leading to deficits in specific brain functions. The most common neurodegenerative diseases are Alzheimer‘s disease, Parkinson‘s disease, amyotrophic lateral sclerosis, multiple sclerosis and Huntington‘s disease. The therapy of these diseases is mostly only symptomatic so far, so intensive research and the search for new therapies and new drugs continue. A number of studies have demonstrated the health-promoting properties of natural products as potential therapeutics against neurodegeneration. Such a natural product can be also a plant from the Papaveraceae family, red horned poppy (Glaucium corniculatum) whose ingredients have a neuro- protective effect and inhibit acetylcholinesterase and butyrylcholinesterase enzymes.

BACKGROUND AND OBJECTIVES: N-acetyl-l-leucine (NALL) has been established to improve the neurologic manifestations of Niemann-Pick disease type C (NPC) after 12 weeks in a placebo-controlled trial. In the open-label extension phase (EP) follow-up, data were obtained after 12 and 18 months to evaluate the long-term effects of NALL for NPC. METHODS: This is an ongoing, multinational, multicenter EP. Patients with a genetic diagnosis of NPC aged 4 years or older who completed the placebo-controlled trial were eligible to continue in the EP and receive orally administered NALL 2-3 times per day in 3 tiers of weight-based dosing. The primary end point is the modified 5-domain NPC Clinical Severity Scale (NPC-CSS) (range 0-25 points; lower score representing better neurologic status); data from the EP cohort are compared with the expected annual trajectory of decline (i.e., disease progression) established in natural history studies. Analyses are also performed on exploratory end points, including the 15-domain and 4-domain NPC-CSSs and the Scale for Assessment and Rating of Ataxia (SARA). RESULTS: Fifty-three patients aged 5-67 years (45.3% female, 54.7% male) were enrolled in the EP. After 12 months, the mean (±SD) change from baseline on the 5-domain NPC-CSS was -0.27 (±2.42) with NALL vs +1.5 (±3.16) in the historical cohort (95% CI -3.05 to -0.48; p = 0.009), corresponding to a 118% reduction in annual disease progression. After 18 months, the mean (±SD) change was +0.05 (±2.95) with NALL vs +2.25 (±4.74) in the historical cohort (95% CI -4.06 to -0.35; p = 0.023). The 15-domain and 4-domain NPC-CSSs were consistent with the 5-domain NPC-CSS. The improvements in neurologic manifestations demonstrated in the placebo-controlled trial on the primary SARA end point were sustained over the long-term follow-up. NALL was well tolerated, and no treatment-related adverse events or serious reactions occurred. DISCUSSION: Treatment with NALL was associated with a significant reduction in NPC disease progression after 12 and 18 months, demonstrating a disease-modifying, neuroprotective effect. TRIAL REGISTRATION INFORMATION: The trial is registered with ClinicalTrials.gov (NCT05163288; registered December 6, 2021), EudraCT (2021-005356-10). The first patient was enrolled into the EP on March 8, 2023. The trial was funded by IntraBio Inc. CLASSIFICATION OF EVIDENCE: This study provides Class IV evidence that NALL reduces disease progression in NPC.

• MeSH
• dítě MeSH
• dospělí MeSH
• dvojitá slepá metoda MeSH
• leucin * analogy a deriváty   terapeutické užití   MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• následné studie MeSH
• neuroprotektivní látky * terapeutické užití   MeSH
• Niemannova-Pickova nemoc typu C * farmakoterapie   MeSH
• předškolní dítě MeSH
• progrese nemoci MeSH
• stupeň závažnosti nemoci MeSH
• výsledek terapie MeSH
• Check Tag
• dítě MeSH
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• předškolní dítě MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• randomizované kontrolované studie MeSH

Posterior fossa syndrome (PFS) is a serious postoperative complication that primarily affects children following resection of posterior fossa tumors. Although its complex pathophysiology, involving disruption of cerebellar structures and the dentato-thalamo-cortical pathway, is increasingly being elucidated, effective treatments remain limited. This perspective explores acetyl-DL-leucine (ADLL) and its active L-enantiomer, N-acetyl-L-leucine (NALL), as promising therapeutic candidates for PFS. Emerging mechanistic, preclinical, and clinical evidence suggests that both compounds might alleviate PFS symptoms through neuroprotective and neurorestorative mechanisms, including neuronal membrane stabilization, metabolic enhancement, antioxidant and anti-inflammatory effects, and dopaminergic modulation. NALL, which has greater neurotherapeutic potential than ADLL, might particularly support recovery through its multimodal effects on neuronal function, thereby enhancing perioperative resilience. Further translational research into these acetylated leucine analogues is warranted.

• MeSH
• infratentoriální nádory * chirurgie   MeSH
• leucin * analogy a deriváty   terapeutické užití   farmakologie   MeSH
• lidé MeSH
• neuroprotektivní látky * farmakologie   terapeutické užití   MeSH
• pooperační komplikace * farmakoterapie   MeSH
• syndrom MeSH
• zvířata MeSH
• Check Tag
• lidé MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Spinal cord injury (SCI) results in paralysis, driven partly by widespread glutamate-induced secondary excitotoxic neuronal cell death in and around the injury site. While there is no curative treatment, the standard of care often requires interventive decompression surgery and repair of the damaged dura mater close to the injury locus using dural substitutes. Such intervention provides an opportunity for early and local delivery of therapeutics directly to the injured cord via a drug-loaded synthetic dural substitute for localized pharmacological therapy. Riluzole, a glutamate-release inhibitor, has shown neuroprotective potential in patients with traumatic SCI, and therefore, this study aimed to develop an electrospun riluzole-loaded synthetic dural substitute patch suitable for the treatment of glutamate-induced injury in neurons. A glutamate-induced excitotoxicity was optimized in SH-SY5Y cells by exploring the effect of glutamate concentration and exposure duration. The most effective timing for administering riluzole was found to be at the onset of glutamate release as this helped to limit extended periods of glutamate-induced excitotoxic cell death. Riluzole-loaded patches were prepared by using blend electrospinning. Physicochemical characterization of the patches showed the successful encapsulation of riluzole within polycaprolactone fibers. A drug release study showed an initial burst release of riluzole within the first 24 h, followed by a sustained release of the drug over 52 days to up to approximately 400 μg released for the highest loading of riluzole within fiber patches. Finally, riluzole eluted from electrospun fibers remained pharmacologically active and was capable of counteracting glutamate-induced excitotoxicity in SH-SY5Y cells, suggesting the clinical potential of riluzole-loaded dural substitutes in counteracting the effects of secondary injury in the injured spinal cord.

• MeSH
• implantované léky MeSH
• kyselina glutamová metabolismus   MeSH
• lidé MeSH
• nádorové buněčné linie MeSH
• neurony účinky léků   MeSH
• neuroprotektivní látky * aplikace a dávkování   chemie   farmakologie   MeSH
• polyestery chemie   MeSH
• poranění míchy * farmakoterapie   MeSH
• riluzol * aplikace a dávkování   chemie   farmakologie   MeSH
• uvolňování léčiv MeSH
• zvířata MeSH
• Check Tag
• lidé MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH

Alzheimer's disease (AD) is the most debilitating form of dementia, characterized by amyloid-β (Aβ)-related toxic mechanisms such as oxidative stress, neuroinflammation, and mitochondrial dysfunction. The development of AD is influenced by environmental factors linked to lifestyle, including physical and mental inactivity, diet, and smoking, all of which have been associated with the severity of the disease and Aβ-related pathology. In this study, we used differentiated SH-SY5Y neuroblastoma and C6 glioma cells to investigate the neuroprotective and anti-inflammatory effects of daidzein, a naturally occurring isoflavone, in the context of Aβ oligomer-related toxicity. We observed that pre-treatment with daidzein prevented Aβ-induced cell viability loss, increased oxidative stress, and mitochondrial membrane potential decline in both SH-SY5Y and C6 cells. Furthermore, daidzein application reduced elevated levels of MAPK pathway proteins, pro-inflammatory molecules (cyclooxygenase-2 and IL-1β), and pyroptosis markers, including caspase-1 and gasdermin D, all of which were increased by Aβ exposure. These findings strongly suggest that daidzein alleviates inflammation and toxicity caused by Aβ oligomers. Our results indicate that daidzein could be a potential therapeutic agent for AD and other Aβ-related neurodegenerative diseases.

• MeSH
• amyloidní beta-protein * toxicita   MeSH
• antiflogistika * farmakologie   MeSH
• gliom * patologie   metabolismus   farmakoterapie   MeSH
• isoflavony * farmakologie   MeSH
• krysa rodu rattus MeSH
• lidé MeSH
• membránový potenciál mitochondrií účinky léků   MeSH
• nádorové buněčné linie MeSH
• neuroblastom * patologie   metabolismus   farmakoterapie   MeSH
• neuroprotektivní látky * farmakologie   MeSH
• oxidační stres účinky léků   MeSH
• pyroptóza účinky léků   MeSH
• viabilita buněk účinky léků   MeSH
• zvířata MeSH
• Check Tag
• krysa rodu rattus MeSH
• lidé MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH

Prodromální Parkinsonova nemoc (PN) se projevuje širokou škálou klinických příznaků a biologických markerů, včetně dysfunkce autonomního nervového systému, neuropsychiatrických symptomů, spánkových poruch, hypomimie a dysartrie. Ultrazvuková a scintigrafická vyšetření, genetické varianty (např. GBA1, LRRK2) a detekce patologického α-synukleinu poskytují cenné diagnostické nástroje pro včasnou identifikaci rizikových jedinců. I přes pokroky v diagnostice není k dispozici efektivní léčba v prodromálním stadiu, což vyvolává etické otázky ohledně sdělení prognózy a podpory pacientů. V budoucnu lze očekávat výzkum zaměřený na časnou neuroprotektivní intervenci a validaci biomarkerů.

Prodromal Parkinson's disease (PD) manifests with a wide range of clinical symptoms and biological markers, including autonomic nervous system dysfunction, neuropsychiatric symptoms, sleep disorders, hypomimia, and dysarthria. Ultrasound and scintigraphic examinations, genetic variants (e.g., GBA1, LRRK2), and detection of pathological α-synuclein provide valuable diagnostic tools for early identification of at-risk individuals. Despite advancements in diagnostics, effective treatment for the prodromal stage is unavailable, raising ethical questions regarding prognosis communication and patient support. Future research is expected to focus on early neuroprotective interventions and biomarker validation.

• MeSH
• anosmie MeSH
• genetická predispozice k nemoci MeSH
• lidé MeSH
• parasomnie spojené s REM spánkem MeSH
• Parkinsonova nemoc * diagnóza   genetika   MeSH
• prodromální symptomy MeSH
• sdělení pravdy etika   MeSH
• SPECT/CT MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• přehledy MeSH

Depresivní a úzkostné poruchy představují významnou zátěž pro primární péči, přičemž poptávka po účinné a dobře tolerované léčbě stále roste. Souhrnný článek shrnuje současné poznatky o trazodonu - multifunkčním antidepresivu ze skupiny SARI, které kombinuje inhibici zpětného vychytávání serotoninu s antagonismem receptoru 5 HT2A. Přehled se zaměřuje na farmakodynamiku a farmakokinetiku léčiva, jeho antidepresivní, anxiolytické a sedativní vlastnosti i potenciální neuroprotektivní účinky. Klinická data dokládají srovnatelnou účinnost s SSRI/SNRI v léčbě velké depresivní poruchy a prokazují přínos u generalizované úzkostné poruchy, insomnie a chronické neuropatické bolesti. Nízké dávky (25-100 mg) se využívají ke zlepšení spánku, zatímco antidepresivní účinek vyžaduje titraci na 150-300 mg denně. Díky relativně příznivému profilu sexuálních nežádoucích účinků a nízké anticholinergní aktivitě je trazodon vhodný i pro starší polymorbidní pacienty. Článek diskutuje praktické aspekty preskripce v ordinaci praktického lékaře, možnosti kombinace s dalšími psychofarmaky a upozorňuje na klíčová bezpečnostní rizika, zejména ortostatickou hypotenzi, prodloužení QT intervalu a vzácný priapismus. Správná volba dávky, postupná titrace a edukace pacienta jsou nezbytné pro maximalizaci terapeutického přínosu a minimalizaci rizik této léčby.

Depressive and anxiety disorders represent a significant burden on primary care, and demand for effective and well-tolerated treatments continues to grow. This article summarises current knowledge of trazodone, a multifunctional antidepressant from the SARI group that combines serotonin reuptake inhibition with HT2A receptor 5 antagonism. This review focuses on the pharmacodynamics and pharmacokinetics of the drug, its antidepressant, anxiolytic, and sedative properties as well as its potential neuroprotective effects. Clinical data demonstrate comparable efficacy to SSRI/SNRIs in the treatment of major depressive disorder and demonstrate benefit in generalized anxiety disorder, insomnia, and chronic neuropathic pain. Low doses (25-100 mg) are used to improve sleep, while the antidepressant effect requires titration to 150-300 mg daily. The relatively favourable sexual side effect profile and low anticholinergic activity make trazodone suitable for elderly polymorbid patients. The article discusses the practicalities of prescribing in the general practitioner's office and options for combination with other psychopharmaceuticals. It also highlights key safety risks, particularly orthostatic hypotension, QT interval prolongation, and rare priapism. Proper dose selection, gradual titration, and patient education are essential to maximize the therapeutic benefit and minimize the risks of this treatment.

• MeSH
• depresivní poruchy farmakoterapie   MeSH
• duševní poruchy farmakoterapie   MeSH
• kombinovaná farmakoterapie metody   MeSH
• lidé MeSH
• trazodon * aplikace a dávkování   farmakologie   škodlivé účinky   MeSH
• úzkostné poruchy farmakoterapie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• přehledy MeSH

Berberine (BBR), a small molecule protoberberine isoquinoline alkaloid, is easy to cross the blood-brain barrier and is a potential drug for neurodegenerative diseases. Here, we explored the role and molecular mechanism of BBR in Alzheimer's disease (AD) progression. Weighted gene co-expression network analysis (WGCNA) was conducted to determine AD pathology-associated gene modules and differentially expressed genes (DEGs) were also identified. GO and KEGG analyses were performed for gene function and signaling pathway annotation. Cell counting kit-8 (CCK8) assay was applied to analyze cell viability. Immunofluorescence (IF) staining assay was conducted to measure the levels of polarization markers. The production of inflammatory cytokines was analyzed by enzyme-linked immunosorbent assay (ELISA). Reactive oxygen species (ROS) level and mitochondrial membrane potential (MMP) were detected using a ROS detection kit and a MMP Detection Kit (JC-1), respectively. AD pathology-associated DEGs were applied for GO function annotation and KEGG enrichment analysis, and the results uncovered that AD pathology was related to immune and inflammation. Lipopolysaccharide (LPS) exposure induced the M1 phenotype of microglia, and BBR suppressed LPS-induced M1 polarization and induced microglia toward M2 polarization. Through co-culture of microglia and neuronal cells, we found that BBR exerted a neuro-protective role by attenuating the injury of LPS-induced HMC3 on SH-SY5Y cells. Mechanically, BBR switched the M1/M2 phenotypes of microglia by activating PI3K-AKT signaling. In summary, BBR protected neuronal cells from activated microglia-mediated neuro-inflammation by switching the M1/M2 polarization in LPS-induced microglia via activating PI3K-AKT signaling. Key words Alzheimer's Disease, Berberine, Microglia polarization, Neuroinflammation, PI3K-AKT signaling.

• MeSH
• Alzheimerova nemoc * metabolismus   farmakoterapie   patologie   MeSH
• berberin * farmakologie   terapeutické užití   MeSH
• fosfatidylinositol-3-kinasy * metabolismus   MeSH
• lidé MeSH
• mikroglie * účinky léků   metabolismus   MeSH
• myši MeSH
• neuroprotektivní látky * farmakologie   MeSH
• polarita buněk účinky léků   MeSH
• protoonkogenní proteiny c-akt * metabolismus   MeSH
• signální transdukce * účinky léků   MeSH
• zvířata MeSH
• Check Tag
• lidé MeSH
• myši MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH

Parkinson's disease (PD) is one of the most common progressive neurodegenerative pathologies that leads to dopaminergic deficiency and motor manifestations. Alpha-synuclein aggregation is a characteristic hallmark of PD pathogenesis. These aggregates facilitate the formation of Lewy bodies and degeneration. The epidemiological evidence demonstrates a definitive association of diabetes with PD risk. Considering this, many antidiabetic agents such as GLP-1 agonists and DPP-4 inhibitors are being explored as alternative PD therapeutics. This study evaluated the neuroprotective effect of the DPP-4 inhibitor sitagliptin mediated by the PI3K/AKT and Nrf2 pathways in PD models. In silico studies were conducted to determine the binding affinity, stability, and ADMET properties of DPP-4 inhibitors with target proteins. Sitagliptin (15 mg/kg p.o.) was administered in rotenone (30 mg/kg p.o. for 28 days)-induced and MPTP/P (25 mg/kg i.p. MPTP and 100 mg/kg probenecid i.p. twice a week for 5 weeks)-induced PD mouse (C57/BL6) models. Neurobehavioral assessments were carried out throughout the study. Biochemical (GSH, MDA), molecular estimations (AKT, Nrf2, PI3K, GSK-3β, GLP1, CREB, BDNF, NF-κB, alpha-synuclein), histopathological studies, and immunohistochemistry were carried out at the end of the study. The in silico studies demonstrate better binding, stability, and ADMET profile of sitagliptin with both target proteins. Sitagliptin restored cognitive and motor deficits in both rotenone- and MPTP/P-induced mouse models. There was upregulation of PI3K, AKT, Nrf2, CREB, and BDNF levels and downregulation of GSK-3β, NF-κB, and alpha-synuclein levels in both models after treatment with sitagliptin. However, GLP1 levels were not significantly restored, indicating a GLP1-independent mechanism. It also restored histopathological alterations and TH+ neuronal loss induced by rotenone and MPTP/P. These findings demonstrate that sitagliptin exhibits neuroprotective action mediated by upregulation of the PI3K/AKT and Nrf2 pathways in rotenone and MPTP/P mouse models of PD.

• MeSH
• faktor 2 související s NF-E2 * metabolismus   MeSH
• fosfatidylinositol-3-kinasy metabolismus   MeSH
• inhibitory dipeptidylpeptidasy 4 * farmakologie   MeSH
• modely nemocí na zvířatech MeSH
• myši inbrední C57BL MeSH
• myši MeSH
• neuroprotektivní látky * farmakologie   MeSH
• parkinsonské poruchy * metabolismus   farmakoterapie   MeSH
• protoonkogenní proteiny c-akt * metabolismus   MeSH
• rotenon MeSH
• signální transdukce účinky léků   MeSH
• sitagliptin fosfát * farmakologie   MeSH
• upregulace účinky léků   MeSH
• zvířata MeSH
• Check Tag
• mužské pohlaví MeSH
• myši MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH

INTRODUCTION: Multiple Sclerosis (MS), a debilitating central nervous system (CNS) disorder, is characterized by inflammation, demyelination, and neuronal degeneration. Despite advancements in immunomodulatory treatments, neuroprotective or restorative strategies remain inadequate. Our research is focusing on the potential of the positive allosteric modulator of AMPA receptors (AMPA-PAM), PF4778574, in addressing MS symptoms. METHODS: We utilized the MOG35-55 induced experimental autoimmune encephalomyelitis (EAE) model in C57BL6J mice to examine PF4778574's therapeutic and prophylactic efficacy. Our comprehensive approach included clinical scoring, optical coherence tomography (OCT), optomotor response (OMR) and histological assessments. Additionally, we explored the effects of PF4778574 in comparison and in combination with the immunomodulatory agent fingolimod, and investigated the impact on Cuprizone induced toxic demyelination. RESULTS: Prophylactic administration of PF4778574 showed notable improvement in clinical EAE indices and reduction in neuronal loss. While it did not diminish microglial activity, it reduced demyelinated areas in optic nerves and in the corpus callosum. Both PF4778574 and fingolimod significantly enhanced clinical EAE scores and decreased demyelination. However, their combination did not yield additional benefits. In the cuprizone model, PF4778574 increased oligodendrocyte precursor and mature myelin-forming cells, suggesting a pro-remyelinating effect. DISCUSSION: PF4778574 demonstrates promise in mitigating EAE effects, especially in terms of clinical disability and demyelination. These results suggest AMPA-PAMs as potential targets of interest for MS treatment beyond immunomodulatory approaches.

• MeSH
• alosterická regulace MeSH
• AMPA receptory * metabolismus   MeSH
• demyelinizační nemoci farmakoterapie   metabolismus   MeSH
• encefalomyelitida autoimunitní experimentální * farmakoterapie   metabolismus   imunologie   MeSH
• fingolimod hydrochlorid farmakologie   terapeutické užití   MeSH
• modely nemocí na zvířatech MeSH
• myši inbrední C57BL * MeSH
• myši MeSH
• roztroušená skleróza * farmakoterapie   metabolismus   imunologie   MeSH
• zvířata MeSH
• Check Tag
• myši MeSH
• ženské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH