Camila studies how various health policies impact the lives of diverse populations, particularly focusing on transgender and gender-diverse youth and pregnant individuals experiencing mental health challenges. She also investigates neurological conditions like epilepsy, exploring both traditional and alternative therapies. Her research includes developing models to test new treatments for drug-resistant forms of epilepsy and understanding how prenatal exposure to environmental toxins may lead to conditions like autism.
Key findings
The Idylla IDH1-2 Assay Kit correctly detected IDH gene mutations in brain tumors 98.5% of the time, aiding in glioma treatment decisions.
Lower rates of depression and suicidal thoughts among transgender teenagers correlated with states having more inclusive policies, as shown in her review.
Twelve children with drug-resistant epilepsy experienced a complete elimination of light-triggered seizures after treatment with acetazolamide, with a 72% reduction in seizure activity in a zebrafish model.
Frequently asked questions
Does Dr. Esguerra study epilepsy?
Yes, she researches treatments for drug-resistant epilepsy and has developed models to test new therapeutic options.
What health conditions does Dr. Esguerra focus on?
She focuses on conditions like epilepsy, mental health challenges in pregnancy, and the health impacts of policies affecting transgender and gender-diverse youth.
What treatments has Dr. Esguerra researched?
Dr. Esguerra has researched various treatments, including the effectiveness of medications like acetazolamide for epilepsy and the role of complementary therapies among adolescents.
Is Dr. Esguerra's work relevant to pregnant individuals?
Yes, her studies address mental health needs in pregnancy and how these can affect routine prenatal care.
How does Dr. Esguerra's research impact transgender youth?
Her research highlights how inclusive policies can improve mental health outcomes for transgender and gender-diverse youth, providing a foundation for advocacy and policy change.
Publications in plain English
A scoping review of policy and health outcomes for transgender and gender-diverse adolescents in the United States.
Plain English Researchers reviewed published studies on how U.S. state policies affect the health of transgender and gender-diverse teenagers. States with more inclusive policies consistently had lower rates of depression and suicidal thoughts among these youth. The findings point to a clear gap: policy-level research has focused almost entirely on state laws, leaving local and federal policy effects largely unstudied.
Multicenter evaluation of the Idylla IDH1-2 Mutation Assay Kit for detection of IDH mutational status in glioma.
2026
Virchows Archiv : an international journal of pathology
Jansen M, Dorney M, Kraus TFJ, Sotlar K, Melchior L +25 more
Plain English This study tested a rapid diagnostic kit (the Idylla IDH1-2 Assay) for detecting IDH gene mutations in brain tumor tissue across 12 hospitals using stored patient samples. The kit agreed with standard lab methods 98.5% of the time and correctly identified all non-mutated samples. This matters because IDH mutation status determines how glioma patients are classified and treated, and a fast, reliable bedside test could speed up clinical decision-making.
Association between antepartum depressive symptoms and prenatal care utilization and milestones: a retrospective cohort study.
2025
BMC pregnancy and childbirth
Jang M, Ramaiyer M, Olson S, Voegtline K, Esguerra C
Plain English Pregnant people who screened positive for depression in early pregnancy were less likely to complete key third-trimester tests, specifically glucose tolerance and group B strep testing, compared to those without depression. They were also younger, less likely to have a partner, and more often publicly insured. Integrating mental health screening and support throughout pregnancy could help this vulnerable group avoid gaps in routine care.
Beliefs about complementary and alternative medicine and asthma medication among Hispanic/Latinx and Black adolescents in New York City.
2025
Journal of pediatric nursing
Esguerra CR, Naseem A, Castiblanco MR, Zhao Y, George M +1 more
Plain English This study surveyed Hispanic/Latinx and Black teenagers in New York City with poorly controlled asthma about their beliefs in alternative remedies and their concerns about prescribed inhaled steroids. Most teenagers endorsed at least one alternative medicine belief, and Black adolescents were more likely to distrust their inhaled steroids than those who identified as both Hispanic/Latinx and Black. Healthcare providers should directly address these beliefs during asthma visits, tailoring conversations to each patient's cultural background.
Inhibition of Seizure-Like Paroxysms and Toxicity Effects ofExtracts and Constituents in Zebrafish.
2024
ACS chemical neuroscience
Moussavi N, van der Ent W, Diallo D, Sanogo R, Malterud KE +2 more
Plain English Researchers tested extracts and isolated compounds from a traditional African medicinal plant used for epilepsy in a zebrafish seizure model, identifying several xanthone compounds with seizure-suppressing activity. A crude extract and two individual compounds significantly reduced seizure-like behavior in the fish, while other compounds unexpectedly increased brain excitability. The results validate traditional uses of this plant and point to specific compounds worth developing further as potential anti-epileptic agents.
Nieoczym D, Marszalek-Grabska M, Szalak R, Kundap U, Kaczor AA +11 more
Plain English Palmatine, a plant-derived compound, was tested across multiple zebrafish and mouse seizure models to assess its potential as an anti-epileptic drug. It reduced seizures in several models, including one that mimics drug-resistant epilepsy, and computer modeling suggests it may work by enhancing the brain's inhibitory signaling or blocking an excitatory receptor. However, palmatine did not prevent the long-term progression of epilepsy in mice and its precise mechanism remains unclear, so more work is needed before it can be considered a viable drug candidate.
Patient Experiences With Obstetric Counseling on Fetal Malpresentation.
2024
Cureus
Ramaiyer MS, Lulseged B, Glynn S, Esguerra C
Plain English This qualitative study interviewed ten pregnant patients diagnosed with a breech or other malposition fetus to understand how they made decisions between cesarean delivery and a manual repositioning procedure. Patients wanted clearer statistics and more individualized information about the repositioning procedure, and fear of the unknown was the main reason many leaned toward cesarean. Providers should offer more detailed, patient-specific counseling to help people make informed choices that match their birth goals.
Induction of seizures and initiation of epileptogenesis by pilocarpine in zebrafish larvae.
2024
Frontiers in molecular neuroscience
Gawel K, Hulas-Stasiak M, Marszalek-Grabska M, Grenda A, Siekierska A +5 more
Plain English This study introduced a new zebrafish model of epilepsy using pilocarpine, a drug that activates the same brain chemical pathway implicated in a common form of human epilepsy. Zebrafish exposed to pilocarpine developed electrical seizure activity in their brains and, after the drug wore off, continued to have spontaneous unprovoked seizures — mirroring the human condition. The model offers a faster, cheaper alternative to rodent epilepsy studies for testing new treatments.
Effectiveness of add-on acetazolamide in children with drug-resistant CHD2-related epilepsy and in a zebrafish CHD2 model.
2024
Epilepsia open
Melikishvili G, Striano P, Shojeinia E, Gachechiladze T, Kurua E +13 more
Plain English Twelve children with CHD2-related epilepsy — a drug-resistant form triggered by light — were treated with acetazolamide, a low-cost medication normally used as a diuretic. All twelve had their light-triggered seizures eliminated, and six became completely seizure-free; the drug also cut seizure activity by 72% in a zebrafish CHD2 model. Acetazolamide appears to be a promising and affordable option for this difficult-to-treat epilepsy, though larger studies are needed to confirm the findings.
Deoxyhypusine synthase deficiency syndrome zebrafish model: aberrant morphology, epileptiform activity, and reduced arborization of inhibitory interneurons.
2024
Molecular brain
Shojaeinia E, Mastracci TL, Soliman R, Devinsky O, Esguerra CV +1 more
Plain English Researchers engineered zebrafish with reduced activity of the DHPS enzyme, which is essential for a rare chemical modification that helps the brain develop properly. These fish had smaller heads, abnormal body shapes, spontaneous seizure-like electrical activity, and fewer branches on inhibitory brain cells. The zebrafish model closely mirrors the human genetic disorder DHPS deficiency syndrome and provides a platform to study how the brain goes wrong and to test potential treatments.
Evaluation of the Antiseizure Activity of Endemic PlantGuillaumin and Its Main Constituent, Halfordin, on a Zebrafish Pentylenetetrazole (PTZ)-Induced Seizure Model.
2023
International journal of molecular sciences
Skiba A, Kozioł E, Luca SV, Budzyńska B, Podlasz P +7 more
Plain English A plant extract from a New Caledonian endemic tree species, along with its key compound halfordin, was tested in zebrafish for seizure-blocking activity. Both the crude extract and pure halfordin significantly reduced convulsive behavior and electrical seizure activity in the fish brains, and halfordin altered expression of genes involved in brain excitability. These findings validate this plant's use in traditional medicine and identify halfordin as a promising lead for new anti-epileptic drug development.
Reported Beliefs About COVID-19 Vaccines Among Unvaccinated Hispanic Adults Utilizing a Free Clinic in Orlando, Florida.
2023
Cureus
Knapp TM, Hernandez C, Simpson J, Hernandez K, Esguerra C +2 more
Plain English This study used in-depth interviews with 20 unvaccinated Hispanic adults at a free clinic in Florida to understand their hesitancy about COVID-19 vaccines. Three main themes emerged: distrust of information sources, personal factors like immigration status and prior health experiences, and a fear-based reluctance that nonetheless coexisted with openness to eventually getting vaccinated. Healthcare workers serving Hispanic communities can reduce hesitancy by addressing confusion through trusted messengers and acknowledging individual circumstances.
TC-G 1008 facilitates epileptogenesis by acting selectively at the GPR39 receptor but non-selectively activates CREB in the hippocampus of pentylenetetrazole-kindled mice.
2023
Cellular and molecular life sciences : CMLS
Doboszewska U, Socała K, Pieróg M, Nieoczym D, Sawicki J +13 more
Plain English Researchers tested whether activating the GPR39 receptor would reduce seizures, a hypothesis that had been proposed but not experimentally confirmed. Contrary to expectations, the GPR39 activator TC-G 1008 made seizures worse in both zebrafish and mice and accelerated the development of chronic epilepsy. The results argue against targeting GPR39 for epilepsy treatment and raise questions about whether TC-G 1008 acts exclusively through GPR39.
Natural product-derived therapies for treating drug-resistant epilepsies: From ethnopharmacology to evidence-based medicine.
2023
Journal of ethnopharmacology
Challal S, Skiba A, Langlois M, Esguerra CV, Wolfender JL +2 more
Plain English This review examines how natural products — from plants, marine organisms, fungi, and microbes — have contributed to treating epilepsy that doesn't respond to standard medications. It covers recently approved drugs derived from nature, like cannabidiol and rapamycin, ongoing clinical trials, and dozens of preclinical candidates, with special attention to compounds that may work through the vagus nerve. The review argues that traditional medicine represents an underexplored reservoir of new epilepsy treatments with genuinely novel ways of acting in the brain.
In Silico Analysis, Anticonvulsant Activity, and Toxicity Evaluation of Schisandrin B in Zebrafish Larvae and Mice.
2023
International journal of molecular sciences
Nieoczym D, Banono NS, Stępnik K, Kaczor AA, Szybkowski P +3 more
Plain English Schisandrin B, extracted from a traditional medicinal plant, reduced seizures in zebrafish larvae but failed to do so in mice, likely because very little of the drug reaches an active form in mouse brain tissue. Computer modeling suggested the compound acts on inhibitory and excitatory brain receptors, but toxicity tests showed it severely disrupts zebrafish development. These mixed results mean schisandrin B needs substantial further study before it could be considered for epilepsy treatment.
Perinatal exposure to potential endocrine disrupting chemicals and autism spectrum disorder: From Norwegian birth cohort to zebrafish studies.
2023
Environment international
Desalegn AA, van der Ent W, Lenters V, Iszatt N, Stigum H +5 more
Plain English A Norwegian birth cohort study measured 27 environmental chemicals in breast milk and tracked whether children developed autism. One pesticide, beta-hexachlorocyclohexane, was the only chemical linked to a significantly higher autism risk, and zebrafish experiments confirmed it disrupts the development of dopamine-producing neurons. Because Norwegian children's estimated daily intake through breastfeeding exceeds established safety thresholds, this finding highlights a public health concern warranting further investigation.
From the North Sea to Drug Repurposing, the Antiseizure Activity of Halimide and Plinabulin.
2022
Pharmaceuticals (Basel, Switzerland)
Copmans D, Kildgaard S, Roux E, Partoens M, Steurs G +6 more
Plain English Two compounds from a marine fungus, halimide and plinabulin, were found to block seizures in zebrafish and mice, including in models of drug-resistant epilepsy. Plinabulin is already in clinical trials for cancer-related side effects, raising the possibility of repurposing it for epilepsy. Testing related compounds that share plinabulin's mechanism of destabilizing cell structure but lack its seizure-blocking effect suggests the anti-seizure action comes from a different, as-yet-unknown mechanism.
SCN1A overexpression, associated with a genomic region marked by a risk variant for a common epilepsy, raises seizure susceptibility.
2022
Acta neuropathologica
Silvennoinen K, Gawel K, Tsortouktzidis D, Pitsch J, Alhusaini S +21 more
Plain English People carrying a specific genetic variant near the SCN1A gene (which controls brain sodium channels) showed higher SCN1A activity in their hippocampus and smaller hippocampal volume, suggesting this common variant raises epilepsy risk by turning the gene up rather than down. Zebrafish engineered to overexpress the equivalent gene had more frequent spontaneous seizures, and more copies meant more seizures. This finding is relevant to gene therapy approaches for Dravet syndrome, where increasing SCN1A is being explored as a treatment — too much may be as harmful as too little.
Discovery of ()--Benzyl-2-(2,5-dioxopyrrolidin-1-yl)propanamide [], a Novel Orally Bioavailable EAAT2 Modulator with Drug-like Properties and Potent Antiseizure Activity.
2022
Journal of medicinal chemistry
Abram M, Jakubiec M, Reeb K, Cheng MH, Gedschold R +17 more
Plain English A new synthetic compound was found to reduce seizures across four different mouse seizure models — including one that mimics drug-resistant epilepsy — while causing fewer movement-related side effects than existing drugs. Laboratory tests showed it works by enhancing the brain's main glutamate-clearing transporter (EAAT2), making it the first known drug to act this way. Its favorable absorption, metabolism, and safety profile make it a strong candidate for further development as a novel epilepsy treatment.
Zebrafish Larvae Carrying a Splice Variant Mutation in cacna1d: A New Model for Schizophrenia-Like Behaviours?
2021
Molecular neurobiology
Banono NS, Gawel K, De Witte L, Esguerra CV
Plain English Zebrafish carrying a mutation in the cacna1da gene — the fish equivalent of a gene linked to bipolar disorder and schizophrenia — showed abnormal hyperactivity that was not explained by anxiety or seizures. Antipsychotic drugs reversed the hyperactivity while an antiseizure drug only partially reduced it, pointing toward psychosis-like rather than epileptic behavior. These fish may provide a useful model for studying the brain mechanisms behind schizophrenia and testing new treatments.
6-Gingerol, a Major Constituent ofRhizoma, Exerts Anticonvulsant Activity in the Pentylenetetrazole-Induced Seizure Model in Larval Zebrafish.
2021
International journal of molecular sciences
Gawel K, Kukula-Koch W, Banono NS, Nieoczym D, Targowska-Duda KM +3 more
Plain English 6-Gingerol, the main active compound in ginger, was isolated and tested in zebrafish larvae with chemically induced seizures. It reduced seizure-like behavior and electrical brain activity in a dose-dependent manner, and appeared to work by lowering glutamate — the brain's main excitatory chemical — and reducing activity at a key glutamate receptor. This is the first study to demonstrate anticonvulsant activity for 6-gingerol, suggesting ginger's traditional use for seizures may have a real pharmacological basis.
Investigating Barriers to Completion of Postpartum Tubal Ligation: A Retrospective Chart Review.
2021
Southern medical journal
Ng J, Ho D, Patel JM, Esguerra C, Schuster M +1 more
Plain English A retrospective review at a New Jersey hospital found that 81% of women who requested permanent sterilization after delivery actually received the procedure. Cesarean delivery was by far the strongest predictor of completion, with 93% of those patients receiving the procedure compared to 66% of vaginal delivery patients; lacking insurance also reduced completion rates. The gap in access among vaginal delivery patients points to system- or provider-level barriers that future research should address.
N-Benzyl-(2,5-dioxopyrrolidin-1-yl)propanamide (AS-1) with Hybrid Structure as a Candidate for a Broad-Spectrum Antiepileptic Drug.
2020
Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics
Kamiński K, Socała K, Zagaja M, Andres-Mach M, Abram M +12 more
Plain English A synthetic hybrid compound called AS-1 was tested in multiple mouse and zebrafish models and showed broad anti-epileptic activity, including against drug-resistant seizures. When combined with valproic acid, the two drugs worked together better than either alone. The compound has excellent drug-like properties — it crosses the blood-brain barrier, is stable in human liver tissue, and shows no liver toxicity — making it a strong candidate for further development.
Phenotypic Characterization of Larval Zebrafish (Danio rerio) with Partial Knockdown of the cacna1a Gene.
2020
Molecular neurobiology
Gawel K, Turski WA, van der Ent W, Mathai BJ, Kirstein-Smardzewska KJ +2 more
Plain English Zebrafish with a partial knockdown of the cacna1aa gene — which controls calcium channels involved in absence seizures and episodic ataxia — developed spontaneous seizure-like electrical discharges in the brain. Several standard antiseizure drugs reduced these discharges, while carbamazepine had no effect, mirroring patterns seen in human absence epilepsy. This zebrafish model provides a new tool for studying calcium channel-related epilepsies and screening potential treatments.
New insights into the early mechanisms of epileptogenesis in a zebrafish model of Dravet syndrome.
2020
Epilepsia
Tiraboschi E, Martina S, van der Ent W, Grzyb K, Gawel K +9 more
Plain English In a zebrafish model of Dravet syndrome — a severe childhood epilepsy — seizures were traced back to an imbalance in the ratio of excitatory to inhibitory neurons caused by reduced branching of inhibitory brain cells. The drug fenfluramine not only suppressed seizures but also fully restored the inhibitory cell structure and prevented abnormal cell proliferation, while the standard drug diazepam only reduced seizures without fixing the underlying damage. This suggests fenfluramine may modify the disease itself, not just manage symptoms.
The Influence of Palmatine Isolated fromon Pentylenetetrazole-Induced Seizures in Zebrafish.
2020
Cells
Gawel K, Kukula-Koch W, Nieoczym D, Stepnik K, Ent WV +4 more
Plain English Palmatine, an alkaloid from barberry plants, was found to reduce chemically induced seizures in zebrafish, and combining it with the related compound berberine produced a stronger-than-additive effect. Both compounds cross into the brain and appear to work through different mechanisms, which may explain why together they replicated the anticonvulsant effect of the whole plant extract. The findings suggest that combining these two natural compounds could be more effective than either one alone for seizure control.
Gawel K, Langlois M, Martins T, van der Ent W, Tiraboschi E +3 more
Plain English This review comprehensively catalogues both chemical- and gene-based zebrafish models of epilepsy, comparing them to equivalent rodent and human data. Zebrafish offer unique advantages — fast development, transparent bodies, easy genetic manipulation, and suitability for large-scale drug screening — that complement but don't fully replace rodent models. The review argues zebrafish are underutilized and provides a practical reference to help researchers choose the right model for their epilepsy research question.
Pharmacological Validation of the Prepulse Inhibition of Startle Response in Larval Zebrafish using a Commercial Automated System and Software.
2020
Journal of visualized experiments : JoVE
Banono NS, Esguerra CV
Plain English This study developed a standardized, commercially available system to measure prepulse inhibition in zebrafish larvae — a test used to study sensory filtering deficits linked to schizophrenia and other brain disorders. Using this system, the team reproduced known drug effects seen in previous custom-built setups, validating the approach. Having a commercially accessible, reproducible protocol should make it easier for different laboratories to compare results and use zebrafish for neuropsychiatric drug research.
Identification of GSK-3 as a Potential Therapeutic Entry Point for Epilepsy.
2019
ACS chemical neuroscience
Aourz N, Serruys AK, Chabwine JN, Balegamire PB, Afrikanova T +9 more
Plain English Zebrafish-based screening of a traditional Congolese epilepsy remedy led researchers to identify indirubin — a compound that inhibits the enzyme GSK-3 — as the active ingredient responsible for seizure suppression. Both indirubin and a more potent GSK-3 inhibitor then blocked seizures in rat and mouse models, including a drug-resistant model. This is the first evidence that blocking GSK-3 reduces seizures, opening a new avenue for epilepsy drug development.
Anticonvulsant Activity of Pterostilbene in Zebrafish and Mouse Acute Seizure Tests.
2019
Neurochemical research
Nieoczym D, Socała K, Gawel K, Esguerra CV, Wyska E +1 more
Plain English Pterostilbene, a natural compound similar to resveratrol found in blueberries and grapes, reduced seizures in both zebrafish larvae and three separate mouse seizure models. Importantly, it did not impair movement or coordination in mice at effective doses. This is the first study to show pterostilbene has anti-epileptic properties, and while the exact mechanism is unknown, the results justify further investigation as a potential epilepsy treatment.
NIPSNAP1 and NIPSNAP2 Act as "Eat Me" Signals for Mitophagy.
2019
Developmental cell
Princely Abudu Y, Pankiv S, Mathai BJ, Håkon Lystad A, Bindesbøll C +9 more
Plain English Two mitochondrial proteins, NIPSNAP1 and NIPSNAP2, act as surface flags that mark damaged mitochondria for destruction by the cell's recycling machinery — a process called mitophagy. Zebrafish lacking functional NIPSNAP1 had reduced mitochondrial cleanup in the brain and developed features of Parkinson's disease, including loss of dopamine-producing neurons and reduced movement. This identifies these proteins as potential targets for therapies aimed at protecting neurons in Parkinson's and related diseases.
A critical review of zebrafish schizophrenia models: Time for validation?
2019
Neuroscience and biobehavioral reviews
Gawel K, Banono NS, Michalak A, Esguerra CV
Plain English This critical review surveys how zebrafish have been used to model schizophrenia, covering both drug-based and genetic approaches and weighing the strengths and limitations of the fish compared to rodents. While zebrafish reproduce several behavioral features of schizophrenia and allow rapid genetic manipulation, the authors argue that many models lack proper validation. They conclude that zebrafish have real potential for precision medicine and drug discovery in schizophrenia, but the field needs more rigorous standards.
Zebrafish-Based Discovery of Antiseizure Compounds from the North Sea: Isoquinoline Alkaloids TMC-120A and TMC-120B.
2019
Marine drugs
Copmans D, Kildgaard S, Rasmussen SA, Ślęzak M, Dirkx N +5 more
Plain English Two alkaloid compounds from a marine fungus, TMC-120A and TMC-120B, were identified through zebrafish-based screening and found to reduce seizures in both zebrafish and a mouse model of drug-resistant focal epilepsy. Three structurally related compounds from the same organism also showed seizure-blocking activity. The results demonstrate that marine fungi are a promising untapped source of new anti-epileptic drugs and that zebrafish findings can translate meaningfully to mammals.
Sisodiya SM, Fowler HJ, Lake I, Nanji RO, Gawel K +3 more
Plain English This opinion piece examines the largely unexplored connections between climate change and epilepsy, covering how rising temperatures, extreme weather, and the spread of infectious diseases could worsen seizure control and disrupt epilepsy care worldwide. The authors also note that the medical community's own carbon footprint — including international conference travel — contributes to the problem. They call for both more research into climate-epilepsy links and immediate action by healthcare professionals to reduce emissions.
Are zebrafish larvae suitable for assessing the hepatotoxicity potential of drug candidates?
2015
Journal of applied toxicology : JAT
Mesens N, Crawford AD, Menke A, Hung PD, Van Goethem F +6 more
Plain English Zebrafish larvae were tested as a model for predicting whether drug compounds would damage the liver in humans, using a liver-specific gene as a readout. The zebrafish correctly distinguished between liver-toxic and non-toxic versions of the same chemicals and showed damage patterns consistent with human liver pathology, though toxicity in the heart could complicate readings. The results support zebrafish larvae as a useful early-stage screening tool for drug-induced liver injury, complementing standard cell-based tests.
CHD2 variants are a risk factor for photosensitivity in epilepsy.
2015
Brain : a journal of neurology
Galizia EC, Myers CT, Leu C, de Kovel CG, Afrikanova T +43 more
Plain English Analyzing genetic data from hundreds of people with photosensitive epilepsies, researchers found that rare variants in the CHD2 gene were significantly over-represented, particularly in a syndrome called eyelid myoclonia with absences. Zebrafish with reduced CHD2 activity showed dramatically heightened sensitivity to light-triggered seizure-like behavior. CHD2 is the first identified genetic cause of this epilepsy syndrome, and because it does not encode an ion channel, it opens entirely new research directions for understanding abnormal brain excitability.
Cross-species pharmacological characterization of the allylglycine seizure model in mice and larval zebrafish.
2015
Epilepsy & behavior : E&B
Leclercq K, Afrikanova T, Langlois M, De Prins A, Buenafe OE +7 more
Plain English Zebrafish larvae and mice were treated with allylglycine, a compound that depletes the inhibitory brain chemical GABA, and the resulting seizures were tested against five standard anti-epileptic drugs. The seizure patterns and drug response profiles were strikingly similar between species, and most tested drugs showed limited effectiveness — mirroring what clinicians see in treatment-resistant human epilepsy. The authors propose allylglycine-treated zebrafish as a fast, cheap, and reliable model for screening new drugs against difficult-to-treat seizures.
Deiodinase knockdown during early zebrafish development affects growth, development, energy metabolism, motility and phototransduction.
2015
PloS one
Bagci E, Heijlen M, Vergauwen L, Hagenaars A, Houbrechts AM +4 more
Plain English Zebrafish embryos engineered to have reduced activity of thyroid hormone-regulating enzymes (deiodinases) grew more slowly, moved less, had trouble inflating their swim bladders, and showed altered energy metabolism. Knocking down the thyroid-hormone-inactivating enzyme produced more severe effects than knocking down the activating enzymes, and both conditions impaired vision-related gene expression. The findings reveal how precisely balanced thyroid hormone levels must be during early vertebrate development and show zebrafish are a useful system for studying thyroid-related developmental disorders.
Pharmacological characterization of an antisense knockdown zebrafish model of Dravet syndrome: inhibition of epileptic seizures by the serotonin agonist fenfluramine.
2015
PloS one
Zhang Y, Kecskés A, Copmans D, Langlois M, Crawford AD +4 more
Plain English Researchers created a zebrafish model of Dravet syndrome by silencing the gene equivalent to human SCN1A and documented spontaneous seizures and convulsive behavior in these fish. The serotonin-activating drug fenfluramine significantly reduced seizure-like electrical activity in the zebrafish brains, consistent with what has been observed in human clinical trials. This was the first animal model demonstration that fenfluramine can suppress seizures in Dravet syndrome, providing biological support for its use in patients.
Knockdown of type 3 iodothyronine deiodinase severely perturbs both embryonic and early larval development in zebrafish.
2014
Endocrinology
Heijlen M, Houbrechts AM, Bagci E, Van Herck SL, Kersseboom S +5 more
Plain English Zebrafish have two versions of the thyroid hormone-inactivating enzyme D3, and silencing them revealed that D3 is essential for normal early development — embryos without it developed more slowly, had abnormal organs including liver and intestine, and moved significantly less. The more highly expressed of the two genes had stronger effects when silenced, and the defects extended from physical malformations to impaired escape responses. The study establishes D3 as a critical developmental regulator and makes zebrafish a practical model for studying thyroid hormone-related developmental disorders.
Smoc2 modulates embryonic myelopoiesis during zebrafish development.
2014
Developmental dynamics : an official publication of the American Association of Anatomists
Mommaerts H, Esguerra CV, Hartmann U, Luyten FP, Tylzanowski P
Plain English The protein SMOC2 was found to be necessary for the proper formation of early immune cells in zebrafish embryos, specifically a type of white blood cell produced in a region called the rostral blood islands. Without SMOC2, the molecular signals that normally instruct cells to become immune progenitors were disrupted. This work identifies SMOC2 as a key regulator of early blood cell development and connects it to a signaling pathway (BMP) that controls cell identity during embryogenesis.
Zebrafish bioassay-guided microfractionation identifies anticonvulsant steroid glycosides from the Philippine medicinal plant Solanum torvum.
2014
ACS chemical neuroscience
Challal S, Buenafe OE, Queiroz EF, Maljevic S, Marcourt L +9 more
Plain English Using zebrafish with chemically induced seizures, researchers screened a traditional Philippine plant (Solanum torvum) and traced its anti-epileptic activity to a family of steroid-like sugar compounds isolated from the leaves. These compounds, also present in the traditional water-based preparation used in folk medicine, reduced seizures in zebrafish across multiple tests. The study demonstrates that zebrafish-guided fractionation can rapidly validate and decode the active ingredients in traditional seizure remedies.
The plant decapeptide OSIP108 prevents copper-induced toxicity in various models for Wilson disease.
2014
Toxicology and applied pharmacology
Spincemaille P, Pham DH, Chandhok G, Verbeek J, Zibert A +7 more
Plain English Wilson disease is a genetic condition where copper builds up and destroys the liver and brain; this study tested whether OSIP108, a short protein derived from plants, could protect against copper toxicity. OSIP108 improved cell survival in multiple lab models of Wilson disease and, when injected into copper-exposed zebrafish, restored normal liver structure and reduced damaging oxidative stress. These findings position OSIP108 as a lead compound for a new type of Wilson disease therapy.
Insights from zebrafish and mouse models on the activity and safety of ar-turmerone as a potential drug candidate for the treatment of epilepsy.
2013
PloS one
Orellana-Paucar AM, Afrikanova T, Thomas J, Aibuldinov YK, Dehaen W +2 more
Plain English Ar-turmerone, a compound from turmeric, was further tested in mouse seizure models after it previously showed anti-epileptic activity in zebrafish. It reduced seizures in two mouse models, reached the brain quickly after injection, and showed no effect on motor coordination even at doses 500 times the effective amount. Combined with its ability to alter expression of seizure-related genes in zebrafish, ar-turmerone stands out as a well-tolerated natural compound warranting further study as a potential epilepsy treatment.
A phenotypic screen in zebrafish identifies a novel small-molecule inducer of ectopic tail formation suggestive of alterations in non-canonical Wnt/PCP signaling.
2013
PloS one
Gebruers E, Cordero-Maldonado ML, Gray AI, Clements C, Harvey AL +4 more
Plain English A large screen of plant extracts in zebrafish embryos identified a compound called para-coumaric acid methyl ester (pCAME) that causes embryos to grow extra tails — a phenotype linked to disruption of signaling pathways that control body shape. Follow-up experiments showed pCAME works together with known inhibitors of the BMP pathway and causes the kind of movement defects seen when a related pathway (Wnt/PCP) is disrupted. While the exact molecular target was not pinned down, the zebrafish screen successfully flagged a biologically active natural compound worth further investigation.
Public expectations for nonemergency hospital resources and services during disasters.
2013
Disaster medicine and public health preparedness
Charney RL, Rebmann T, Esguerra CR, Lai CW, Dalawari P
Plain English This survey study asked over 900 emergency department patients and family members what hospital resources they would expect to need during a pandemic, earthquake, or terrorist bombing. Expectations were high and sometimes unrealistic, and non-white individuals and those with more frequent hospital use consistently expected more services across all disaster types. The findings suggest that current hospital disaster plans may not match public expectations, and that targeted public communication — especially for underserved communities — is needed before disasters occur.