Neurosciences Commons^™

Outcomes Of Arteriovenous Malformation Patients With Multiple Versus Single Feeders: A Multicenter Retrospective Study With Propensity-Score Matching, Basel Musmar, Nimer Adeeb, Hammam Abdalrazeq, Joanna M Roy, Stavropoula I Tjoumakaris, Hamza Adel Salim, Douglas Kondziolka, Jason Sheehan, Christopher S Ogilvy, Howard Riina, Sandeep Kandregula, Adam A Dmytriw, Kareem El Naamani, Ahmed Abdelsalam, Natasha Ironside, Deepak Kumbhare, Cagdas Ataoglu, Muhammed Amir Essibayi, Abdullah Keles, Sandeep Muram, Daniel Sconzo, Arwin Rezai, Omar Alwakaa, Salem M Tos, Ufuk Erginoglu, Johannes Pöppe, Rajeev D Sen, Christoph J Griessenauer, Jan-Karl Burkhardt, Robert M Starke, Mustafa K Baskaya, Laligam N Sekhar, Michael R Levitt, David J Altschul, Malia Mcavoy, Assala Aslan, Abdallah Abushehab, Christian Swaid, Adib A Abla, Saman Sizdahkhani, Sravanthi Koduri, Elias Atallah, Spyridon Karadimas, M Reid Gooch, Robert H Rosenwasser, Christopher Stapleton, Matthew Koch, Visish M Srinivasan, Peng R Chen, Spiros Blackburn, Joseph Cochran, Omar Choudhri, Bryan Pukenas, Darren Orbach, Edward Smith, Pascal J Mosimann, Ali Alaraj, Mohammad A Aziz-Sultan, Aman B Patel, Hugo H Cuellar, Michael Lawton, Bharat Guthikonda, Jacques Morcos, Pascal Jabbour

Faculty, Staff and Student Publications

Introduction: The impact of multiple feeding arteries on clinical outcomes of cerebral arteriovenous malformations (AVMs) is not well understood. This study aims to compare outcomes between AVMs with multiple versus single feeding arteries.

Patients and methods: Data from the Multicenter International Study for Treatment of Brain AVMs (MISTA) consortium were analyzed. Propensity score matching (PSM) was used to balance cohorts. Subgroup analysis was conducted for ruptured and unruptured AVMs and different treatment options, and multivariable logistic regression was applied to assess the impact of feeding artery origin.

Results: Among 953 patients, 661(69.4%) had multiple feeding arteries, and 292 (30.6%) had …

Anxiety Reduction In Autism Spectrum Disorder Using Novel Deep-Pressure Cutaneous Stimulation Therapy, Aaron Andrews, Jordyn Huecker, Kennedy Madrid, Lorissa Thorpe, James Fini, Josilyn Zamora, Victoria Oyeniyi, Maura Hart, Amanda Page, James Barber, Chase Taylor, Halah Khan, Spencer Willardson, Kyle Bills Phd, Christina Small

Annual Research Symposium

No abstract provided.

Transcranial Magnetic Stimulation As A Treatment Modality For Functional Bowel Disorder And Irritable Bowel Syndrome And Possible Correlations With The Gut-Brain Axis: A Review, Lauren Draper, Devin Pfister, Ethan Zaugg

Annual Research Symposium

Functional Bowel Disorders (FBD), including Irritable Bowel Syndrome (IBS), are highly prevalent gastrointestinal conditions classified as Disorders of Gut-Brain Interactions (DGBIs) under the Rome IV criteria. These conditions, marked by abdominal pain, altered bowel habits, and significant psychological comorbidities, present substantial challenges in both diagnosis and treatment. Conventional therapies primarily target gut-centric mechanisms but often yield limited efficacy, underscoring the need for approaches that account for the complex interplay of the gut-brain axis in DGBI pathophysiology.

Investigating The Effects Of Resveratrol On Opioid-Induced Hyperalgesia, Bryana Cox, Thien Do, Ashlyn Hughes, Zane Kingsbury, Keara Leroy, Andrew J. Payne

Annual Research Symposium

Opioid-induced hyperalgesia (OIH) is an adverse effect of chronic opioid therapy, characterized by increased sensitivity to pain. This study will seek to determine if using resveratrol supplementation as an indirect enhancer to increase the expression of the KCC2 membrane transporter can alleviate the symptoms of OIH in human subjects.

Unraveling Physiologic Mechanisms In Passive And Active Mechanoreceptor Stimulation, Halah Khan, Braden Ashcraft

Annual Research Symposium

No abstract provided.

Identifying Breathing, Swallowing, And Speech Biosignatures In Parkinson’S Disease Patients With Wearable Devices, Amanda Brandaris, Katherine Shishido, Rohaan Manzoor, Ethan Hampton, Karthik Jasty, Kelvin Guo, Anna Fish, Spencer Peterson, Ulrike H. Mitchell Phd, Phillip Sechtem Phd, Ccc-Slp, Paula Johnson Phd, Anton E. Bowden Phd, Miriam Cortez-Cooper Pt, Phd, Pamela I. Barney Msrt, Rrt, Ae-C, Nps, John A. Kriak Pharmd

Annual Research Symposium

No abstract provided.

Red Meat Consumption And Hypertension: An Updated Review, Tara S Allen, Michael Najem, Alexis C Wood, Danielle J Lee, Lorena S Pacheco, Lori B Daniels, Matthew A Allison

Faculty, Staff and Students Publications

PURPOSE OF REVIEW: Hypertension (HTN) is a major risk factor for cardiovascular diseases (CVD). The global prevalence of HTN and related CVD mortality continues to rise. The development of HTN is influenced by genetic predisposition and modifiable risk factors, including diet. One area of ongoing debate is the relationship between red meat consumption and risk of HTN.

RECENT FINDINGS: Processed red meat has become increasingly implicated in the pathogenesis and morbidity of HTN, though randomized control trials comparing HTN-related outcomes associated with red meat subtypes have yielded heterogenous results. This review summarizes the existing relevant literature and highlights the methodological …

A Targeted Gene Expression Biomarker Predicts Clinic Low-Risk Meningioma Recurrence, Minh P Nguyen, Ramin A Morshed, Mark W Youngblood, Haley K Perlow, Calixto-Hope G Lucas, Akash J Patel, Joshua D Palmer, Craig M Horbinski, Stephen T Magill, William C Chen, David R Raleigh

Duncan NRI Faculty and Staff Publications

Background: Despite reassuring clinical and histological features, low-grade meningiomas can recur after surgery. Targeted gene expression profiling improves risk stratification of meningiomas, but the utility of this approach for clinical low-risk meningiomas is incompletely understood.

Methods: This was a multicenter retrospective cohort study of meningiomas from patients who were treated at 4 institutions from 1992 to 2023. Adult patients with newly diagnosed or recurrent World Health Organization (WHO) grade 1 meningiomas that were treated with gross total resection (GTR) or subtotal resection (STR), or newly diagnosed WHO grade 2 meningiomas that were treated with GTR, were included. A 34-gene expression …

Neuronal Network Activation Induced By Forniceal Deep Brain Stimulation In Mice, Bin Tang, Zhenyu Wu, Qi Wang, Jianrong Tang

Faculty, Staff and Students Publications

Background: The fimbria-fornix is a nerve fiber bundle that connects various structures of the limbic system in the brain and plays a key role in cognition. It has become a major target of deep brain stimulation (DBS) to treat memory impairment in both dementia patients and animal models of neurological diseases. Previously, we have reported the beneficial memory effects of chronic forniceal DBS in mouse models of intellectual disability disorders. In Rett syndrome and CDKL5 deficiency disorder models, DBS strengthens hippocampal synaptic plasticity, reduces dentate inhibitory transmission or increases adult hippocampal neurogenesis that aids memory. However, the underlying neuronal circuitry …

Motor Pool Selectivity Of Neuromuscular Degeneration In Type I Spinal Muscular Atrophy Is Conserved Between Human And Mouse, Justin C Lee, Wendy K Chung, David J Pisapia, Christopher E Henderson

Faculty, Staff and Students Publications

Spinal muscular atrophy (SMA) is caused by low levels of the survival motor neuron (SMN) protein. Even though SMN is ubiquitously expressed, the disease selectively affects motor neurons, leading to progressive muscle weakness. Even among motor neurons, certain motor units appear more clinically resistant to SMA. To quantitatively survey selective resistance, we studied extensive neuromuscular autopsies of Type I SMA patients and age-matched controls. We found highly divergent degrees of degeneration of neighboring motor units, even within individual cranial nerves or a single anatomical area such as the neck. Examination of a Type I SMA patient maintained on life support …

Probing For Intentions: The Early Readiness Potential Does Not Reflect Awareness Of Motor Preparation, Jake Gavenas, Aaron Schurger, Uri Maoz

Psychology Faculty Articles and Research

Voluntary actions are typically preceded by the readiness potential (RP), a negative midfrontal electroencephalography (EEG) deflection that begins ~2 s before movement. What cognitive and neural process the RP reflects and how it relates to conscious intention remain unclear due to conflicting findings. We investigated the neural basis and cognitive significance of the RP in a novel probe-based paradigm. Contrary to prior reports, we found that pre-probe RP buildups were not related to reported awareness of motor preparation. Computational modeling suggested that the best explanation for these results is via metacognitive access to stochastic accumulation. Reported preparation was also related …

Targeting Tiam1 Enhances Hippocampal-Dependent Learning And Memory In The Adult Brain And Promotes Nmda Receptor-Mediated Synaptic Plasticity And Function, Francisco A Blanco, Md Ali Bin Saifullah, Jinxuan X Cheng, Carlota Abella, Federico Scala, Karen Firozi, Sanyong Niu, Jin Park, Jeannie Chin, Kimberley F Tolias

Faculty, Staff and Students Publications

Excitatory synapses and the actin-rich dendritic spines on which they reside are indispensable for information processing and storage in the brain. In the adult hippocampus, excitatory synapses must balance plasticity and stability to support learning and memory. However, the mechanisms governing this balance remain poorly understood. Tiam1 is an actin cytoskeleton regulator prominently expressed in the dentate gyrus (DG) throughout life. Previously, we showed that Tiam1 promotes dentate granule cell synapse and spine stabilization during development, but its role in the adult hippocampus remains unclear. Here, we deleted Tiam1 from adult forebrain excitatory neurons (Tiam1^fKO) and assessed …

From Bench To Bedside: Murine Models Of Inherited And Sporadic Brain Arteriovenous Malformations, Ashely R Ricciardelli, Gael Genet, Nafiisha Genet, Samuel T Mcclugage, Peter T Kan, Karen K Hirschi, Jason E Fish, Joshua D Wythe

Faculty, Staff and Students Publications

Brain arteriovenous malformations are abnormal vascular structures in which an artery shunts high pressure blood directly to a vein without an intervening capillary bed. These lesions become highly remodeled over time and are prone to rupture. Historically, brain arteriovenous malformations have been challenging to treat, using primarily surgical approaches. Over the past few decades, the genetic causes of these malformations have been uncovered. These can be divided into (1) familial forms, such as loss of function mutations in TGF-β (BMP9/10) components in hereditary hemorrhagic telangiectasia, or (2) sporadic forms, resulting from somatic gain of function mutations in genes involved in …

Understanding Pediatric Bipolar Disorder Through The Investigation Of Clinical, Neuroanatomic, Neurophysiological And Neurocognitive Dimensions: A Pilot Study, Alessio Simonetti, Evelina Bernardi, Sherin Kurian, Antonio Restaino, Claudia Calderoni, Emanuela De Chiara, Francesca Bardi, Gabriele Sani, Jair C Soares, Kirti Saxena

Faculty, Staff and Student Publications

Background: Pathophysiological models of pediatric bipolar disorder (PBD) are lacking. Multimodal approaches may provide a comprehensive description of the complex relationship between the brain and behavior. Aim: To assess behavioral, neuropsychological, neurophysiological, and neuroanatomical alterations in youth with PBD.

Methods: Subjects with PBD (n = 23) and healthy controls (HCs, n = 23) underwent (a) clinical assessments encompassing the severity of psychiatric symptoms, (b) neuropsychological evaluation, (c) analyses of event-related potentials (related to the passive viewing of fearful, neutral, and happy faces during electroencephalography recording, and (d) cortical thickness and deep gray matter volume measurement using magnetic …

Educating Medical Students In Sleep, Diet, And Exercise To Determine Effects On Their Treatment Plan Development For Future Patients, Paul Jackson, Wyatt Edgekoski, Kaleb Gustavsen, Andrew Payne

Annual Research Symposium

No abstract provided.

The Global Epidemiology And Health Burden Of The Autism Spectrum: Findings From The Global Burden Of Disease Study 2021, Global Burden Of Disease Study 2021 Autism Spectrum Collaborators, Lourdes Bernadette Tanchanco, Angel Belle Dy

Ateneo School of Medicine and Public Health Publications

Background

High-quality estimates of the epidemiology of the autism spectrum and the health needs of autistic people are necessary for service planners and resource allocators. Here we present the global prevalence and health burden of autism spectrum disorder from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2021 following improvements to the epidemiological data and burden estimation methods.

Methods

For GBD 2021, a systematic literature review involving searches in PubMed, Embase, PsycINFO, the Global Health Data Exchange, and consultation with experts identified data on the epidemiology of autism spectrum disorder. Eligible data were used to estimate prevalence …

Vertex-Based Analysis Of Cerebral Blood Flow And Fractional Amplitude Of Low-Frequency Fluctuations (Cbf-Falff) Coupling In Moderate-To-Severe Traumatic Brain Injury During The First Year Post-Injury, Vaidehi Hemkumar Patel

Dissertations, Theses, and Capstone Projects

Traumatic brain injury (TBI) is known to involve damage in the neurovascular unit. TBI may disrupt the brain’s neurovascular coupling–the relationship between cerebral blood flow and neural activity–that can lead to cognitive and functional impairments. This study attempted to non-invasively investigate neurovascular coupling in patients with moderate to severe TBI (msTBI) during the first year post-injury using a combined metric of cerebral blood flow (CBF) and fractional amplitude of low-frequency fluctuations (fALFF), a proxy for spontaneous neural activity. Using arterial spin labeling (ASL) and functional MRI sequences, CBF and fALFF were measured in 29 msTBI patients 3-, 6- and 12-months …

Single-Nuclei Sequencing Reveals A Robust Corticospinal Response To Nearby Axotomy But Overall Insensitivity To Spinal Injury, Zimei Wang, Manojkumar Kumaran, Elizabeth Bastel, Sofia Testor-Cabrera, Zac Beine, Alicia Alvarez Ribelles, Pantelis Tsoulfas, Ishwariya Venkatesh, Murray G. Blackmore

Biomedical Sciences Faculty Research and Publications

The ability of neurons to sense and respond to damage is crucial for maintaining homeostasis and facilitating nervous system repair. For some cell types, notably dorsal root ganglia and retinal ganglion cells, extensive profiling has uncovered a significant transcriptional response to axon injury, which influences survival and regenerative outcomes. In contrast, the injury responses of most supraspinal cell types, which display limited regeneration after spinal damage, remain mostly unknown. In this study, we used single-nuclei sequencing in adult male and female mice to profile the transcriptional responses of diverse supraspinal cell types to spinal injury. Surprisingly, thoracic spinal injury induced …

Psychiatric Manifestations Of Encephalitis, Paris Bean, Ashley Heck, Ralph Habis, Swathi Sowmitran, Zoe Cartaina, Rajesh Gupta, John Probasco, Rodrigo Hasbun, Arun Venkatesan

Faculty, Staff and Student Publications

Objective: Encephalitis is a serious and potentially life-threatening condition of infectious or autoimmune cause. We aim to characterize the frequency and clinical spectrum of presenting psychiatric symptoms in encephalitis in order to inform earlier recognition and initiation of treatment.

Methods: This was a retrospective study of adult patients who met the 2013 International Encephalitis Consortium (IEC) and/or 2016 Graus criteria between February 2005 and February 2023. The study included two hospital systems in Houston, Texas, and Baltimore, Maryland and included a total of 642 patients. Psychiatric manifestations were grouped into five high-level categories: behavior, psychosis, mood, sleep disturbances, and catatonia. …

All Three Supersystems-Nervous, Vascular, And Immune-Contribute To The Cortical Infarcts After Subarachnoid Hemorrhage, Jens P Dreier, Alexander Joerk, Hiroki Uchikawa, Viktor Horst, Coline L Lemale, Helena Radbruch, Devin W Mcbride, Peter Vajkoczy, Ulf C Schneider, Ran Xu

Faculty, Staff and Student Publications

The recently published DISCHARGE-1 trial supports the observations of earlier autopsy and neuroimaging studies that almost 70% of all focal brain damage after aneurysmal subarachnoid hemorrhage are anemic infarcts of the cortex, often also affecting the white matter immediately below. The infarcts are not limited by the usual vascular territories. About two-fifths of the ischemic damage occurs within ~ 48 h; the remaining three-fifths are delayed (within ~ 3 weeks). Using neuromonitoring technology in combination with longitudinal neuroimaging, the entire sequence of both early and delayed cortical infarct development after subarachnoid hemorrhage has recently been recorded in patients. Characteristically, cortical …

Predictors Of Bi-Directional Transitions From Mild Cognitive Impairment In A Diverse Cohort, Mitzi M. Gonzales, Roman Fernandez, Sarah Kremen, Zaldy S. Tan, Amy E. Werry, Xueqiu Jian, John Hart, Donald Royall, Gladys Maestre, Sara Espinoza

School of Medicine Publications

Trajectories following a diagnosis of mild cognitive impairment (MCI) are varied and may fluctuate over time. Among diverse ethnic and racial groups, social factors, medical comorbidities, and biases in assessment procedures may contribute to greater heterogeneity in the MCI diagnostic category and affect its prognostic significance for dementia. The study goal was to evaluate the frequency and variables associated with MCI transitions among non-Hispanic White (NHW) and Latinx older adults. Multistate Markov models characterized transitions across diagnostic states (cognitively unimpaired (CU), MCI, dementia) over ten years. Variables associated with transitions were assessed using hazard ratios (HR) and 95% confidence intervals …

Defining Neonatal Status Epilepticus: A Scoping Review From The Ilaee Neonatal Task Force, Magda L Nunes, Elissa G Yozawitz, Courtney J Wusthoff, Renée A Shellhaas, Efraín Olivas-Peña, Jo M Wilmshurst, Ronit M Pressler, Chahnez C Triki, Hans Hartmann, Terrie Inder, Geraldine B Boylan, Kette Valente, Solomon L Moshe, Eli M Mizrahi, Nicholas S Abend

Faculty, Staff and Students Publications

Objective: To review the available literature concerning the definition of neonatal status epilepticus (SE) and/or seizure burden.

Methods: The International League Against Epilepsy Neonatal Task Force performed a scoping review of the definitions of neonatal SE. Following a systematic literature review, articles were screened and data were abstracted regarding: (1) article characteristics (author identification, publication year, journal name, digital object identifier, title, objective, and study design); (2) cohort characteristics (sample size, gestational age, seizure etiology); (3) definition of SE and/or seizure burden; and (4) the method used to identify and classify SE, including routine EEG (EEG), continuous EEG monitoring (cEEG), …

Synaptic Alterations In Pyramidal Cells Following Genetic Manipulation Of Neuronal Excitability In Monkey Prefrontal Cortex, Guillermo Gonzalez-Burgos, Takeaki Miyamae, Yosuke Nishihata, Olga L Krimer, Kirsten Wade, Kenneth N Fish, Dominique Arion, Zhao-Lin Cai, Mingshan Xue, William R Stauffer, David A Lewis

Duncan NRI Faculty and Staff Publications

The primate dorsolateral prefrontal cortex (DLPFC) displays unique in vivo activity patterns, but how in vivo activity regulates DLPFC pyramidal neuron (PN) properties remains unclear. We assessed the effects of in vivo Kir2.1 overexpression, a genetic silencing tool, on synapses in monkey DLPFC PNs. We show for the first time that recombinant ion channel expression successfully modifies the excitability of primate cortex neurons, producing effects on synaptic properties apparently different from those in the rodent cortex.

Comprehensive Assessment Reveals Numerous Clinical And Neurophysiological Differences Between Mecp2-Allelic Disorders, Davut Pehlivan, Chengjun Huang, Holly K Harris, Christine Coquery, Aditya Mahat, Mirjana Maletic-Savatic, Laurence Mignon, Sukru Aras, Daniel G Glaze, Charles S Layne, Leonardo Sahelijo, Huda Y Zoghbi, Matthew J Mcginley, Bernhard Suter

Faculty, Staff and Students Publications

OBJECTIVE: Rett syndrome (RTT) and MECP2 duplication syndrome (MDS) result from under- and overexpression of MECP2, respectively. Preclinical studies using genetic-based treatment showed robust phenotype recovery for both MDS and RTT. However, there is a risk of converting MDS to RTT, or vice versa, if accurate MeCP2 levels are not achieved. The aim of this study was to identify biomarkers distinguishing RTT from MDS.

MATERIALS AND METHODS: We prospectively enrolled 11 MDS and 6 male RTT like (MRL) individuals for a panel of clinical and neurophysiological assessments over two visits, 8-10 months apart.

RESULTS: We identified numerous clinical and physiological …

Magnesium Sulfate In The Management Of Acute Ischemic Stroke: A Review Of The Literature And Future Directions, Maximillian S Feygin, Alex Brenner, Omar Tanweer

Faculty, Staff and Students Publications

Background: The management of acute ischemic stroke (AIS) was revolutionized within the last 15 years with the introduction of mechanical thrombectomy (MT) to standard of care. Despite the success of mechanical thrombectomy (MT) in achieving high recanalization rates for large vessel occlusion, functional independence post-treatment remains suboptimal. The current limitations of MT prompt evaluation of the role of adjunctive pharmacologic neuroprotective therapies to prevent excitotoxicity, cellular apoptosis, and inflammation that cause irreversible neuronal damage during AIS. Magnesium (MgSO4) provides an attractive neuroprotectant profile, having many different effects, and is inexpensive, readily available, and has a long-established safety and tolerability profile …

Exploring Individual Differences In Amygdala-Mediated Memory Modulation, Martina K Hollearn, Joseph R Manns, Lou T Blanpain, Stephan B Hamann, Kelly Bijanki, Robert E Gross, Daniel L Drane, Justin M Campbell, Krista L Wahlstrom, Griffin F Light, Aydin Tasevac, Phillip Demarest, Peter Brunner, Jon T Willie, Cory S Inman

Faculty, Staff and Students Publications

Amygdala activation by emotional arousal during memory formation can prioritize events for long-term memory. Building upon our prior demonstration that brief electrical stimulation to the human amygdala reliably improved long-term recognition memory for images of neutral objects without eliciting an emotional response, our study aims to explore and describe individual differences and stimulation-related factors in amygdala-mediated memory modulation. Thirty-one patients undergoing intracranial monitoring for intractable epilepsy were shown neutral object images paired with direct amygdala stimulation during encoding with recognition memory tested immediately and one day later. Adding to our prior sample, we found an overall memory enhancement effect without …

Investigating The Impact Of Sorghum On Tau Protein Phosphorylation And Mitochondrial Dysfunction Modulation In Alzheimer’S Disease: An In Vitro Study, Nasim Rezaee, Eugene Hone, Hamid Sohrabi, Rasheed Abdulraheem, Stuart K. Johnson, Stuart Gunzburg, Ralph N. Martins, W. M.A.D.Binosha Fernando

Research outputs 2022 to 2026

Background: Alzheimer’s disease (AD) is a progressive neurodegenerative disorder with poorly understood pathology. Elevated tau, phospho-tau and mitochondrial dysfunction are significantly correlated with an increased risk of AD and are therefore targets for disease-modifying therapy. In this study, we examined the effects of polyphenolic extracts from six different varieties of sorghum: Shawaya short black-1 (Black), IS1311C (Brown), QL33/QL36 (Red), B923296 (Red), QL12 (White), and QL33 (Red) on the attenuation of beta amyloid-induced phospho-tau levels, total tau levels, and mitochondrial dysfunction in neuronal cells. Method: Tau proteins (231 (pT231), Serine- 199 (pS199), and total tau proteins (T-tau)) were detected and quantified …

Differential Effects Of Stimulation Waveform And Intensity On The Neural Structures Activated By Lumbar Transcutaneous Spinal Cord Stimulation, Harrison T. Finn, Marel Parono, Elizabeth A. Bye, Janet L. Taylor, Simon C. Gandevia, Martin E. Héroux, Jane E. Butler

Research outputs 2022 to 2026

Lumbar transcutaneous spinal cord stimulation (TSS) evokes synchronized muscle responses, termed spinally evoked motor response (sEMR). Whether the structures TSS activates to evoke sEMRs differ when TSS intensity and waveform are varied is unknown. In 15 participants (9 F, 6 M), sEMRs were evoked by TSS over L1–L3 (at sEMR threshold and suprathreshold intensities) with conventional (one 400-ls biphasic pulse) or high-frequency burst (ten 40-ls biphasic pulses at 10 kHz) stimulus waveforms in vastus medialis (VM), tibialis anterior (TA), and medial gastrocnemius (MG) muscles. TSS was paired with transcranial magnetic stimulation (TMS) over the contralateral motor cortex at relative interstimulus …

Development Of 24-Hour Rhythms In Cortisol Secretion Across Infancy: A Systematic Review And Meta-Analysis Of Individual Participant Data, Laura Kervezee, Michelle Romijn, Kirsten N.G. Van De Weijer, Britney S.J. Chen, George L. Burchell, Marieke S. Tollenaar, Marcela Tamayo-Ortiz, Lauren E. Philbrook, Carolina De Weerth, Yang Cao, Joost Rotteveel, Rina D. Eiden, Rima Azar, Nicole R. Bush, Adina Chis, Grazyna Kmita, Melissa W. Clearfield, Roseriet Beijers, Michael Gröschl, Stefan A. Wudy, Andries Kalsbeek, Evalotte Mörelius, Martijn J.J. Finken

Research outputs 2022 to 2026

Context: In adults, cortisol levels show a pronounced 24-hour rhythm with a peak in the early morning. It is unknown at what age this early-morning peak in cortisol emerges during infancy, hampering the establishment of optimal dosing regimens for hydrocortisone replacement therapy in infants with an inborn form of adrenal insufficiency. Objective: We aimed to characterize daily variation in salivary cortisol concentration across the first year of life. Methods: We conducted a systematic review followed by an individual participant data meta-analysis of studies reporting on spontaneous (ie, not stress-induced) salivary cortisol concentrations in healthy infants aged 0-1 year. A one-stage …

Molecular Modification Of Queen Bee Acid And 10-Hydroxydecanoic Acid With Specific Tripeptides: Rational Design, Organic Synthesis, And Assessment For Prohealing And Antimicrobial Hydrogel Properties, Song Hong, Sachin B. Baravkar, Yan Lu, Abdul Razak Masoud, Qi Zhao, Weilie Zhou

School of Medicine Faculty Publications

Royal jelly and medical grade honey are traditionally used in treating wounds and infections, although their effectiveness is often variable and insufficient. To overcome their limitations, we created novel amphiphiles by modifying the main reparative and antimicrobial components, queen bee acid (hda) and 10-hydroxyl-decanoic acid (hdaa), through peptide bonding with specific tripeptides. Our molecular design incorporated amphiphile targets as being biocompatible in wound healing, biodegradable, non-toxic, hydrogelable, prohealing, and antimicrobial. The amphiphilic molecules were designed in a hda(hdaa)-aa1-aa2-aa3 structural model with rational selection criteria for each moiety, prepared via Rink/Fmoc-tBu-based solid-phase peptide synthesis, and structurally verified by NMR and LC–MS/MS. …