Lurasidone Induces Developmental Toxicity and Behavioral Impairments in Zebrafish Embryos
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PROVIDER: PRJNA1277809 | ENA |
REPOSITORIES: ENA
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Project description:Dextromethorphan is widely used in over-the-counter cough and cold medications. Its efficacy and safety for infants and young children remains to be clarified. The present study was designed to use zebrafish as a model to investigate the potential toxicity of dextromethorphan during embryonic and larval development. Three sets of zebrafish embryos/larvae were exposed to dextromethorphan at 24, 48 and 72 h post fertilization (hpf), respectively, during the embryonic/larval development. Compared with the 48 and 72 hpf exposure sets, the embryos/larvae in the 24 hpf exposure set showed much higher mortality rates which increased in a dose-dependent manner. Bradycardia and reduced blood flow were observed for the embryos/larvae treated with increasing concentrations of dextromethorphan. Morphological effects of dextromethorphan exposure, including yolk sac and cardiac edema, craniofacial malformation, lordosis, non-inflated swim bladder and missing gill, were also more frequent and severe among zebrafish embryos/larvae exposed to dextromethorphan at 24 hpf. Whether the more frequent and severe developmental toxicity of dextromethorphan observed among the embryos/larvae in the 24 hpf exposure set, as compared with the 48 and 72 hpf exposure sets, is due to the developmental expression of the phase I and phase II enzymes involved in the metabolism of dextromethorphan remains to be clarified. A reverse transcription-polymerase chain reaction analysis, nevertheless, revealed developmental stage-dependent expression of mRNAs encoding SULT3 ST1 and SULT3 ST3, two enzymes previously shown to be capable of sulfating dextrorphan, an active metabolite of dextromethorphan.
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Project description:Tanshinone IIA (Tan-IIA) is derived from the dried roots of Salvia miltiorrhiza Bunge, a traditional Chinese medicine. Although Salvia miltiorrhiza has been applied for many years, the toxicity of the mono-constituent of Salvia miltiorrhiza, tanshinone IIA, is still understudied. This study evaluated the cardiotoxicity and developmental malformations of Tan-IIA by using zebrafish normal embryos and dechorionated embryos. After treatment with Tan-IIA in different concentrations for four-day periods, obvious pericardial edema, spinal curvature, and even missing tails were observed in zebrafish embryos. The LC50 values in the dechorionated embryo group at 72 h post-fertilization (hpf) and 96 hpf were 18.5 μM and 12.8 μM, respectively, and the teratogenicity was manifested at a concentration of about 1 µM. The main endpoints of teratogenicity were scoliosis, malformation of tail, and pericardium edema. Our findings displayed the potential cardiotoxicity and severe impact on the abnormal development of Tan-IIA in zebrafish embryo at high concentrations, which may help avoid the risk of its clinical application.
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Project description:General anesthetics can cause neurological damage and long-term behavioral/cognitive impairment during fetal and early postnatal life. However, the adverse influence on embryo development induced by propofol is unclear. We used embryonic zebrafish to explore the effects of propofol on embryonic and larval growth and development, and the related apoptotic mechanism. Zebrafish embryos were immersed in propofol (1, 2, 3, 4, and 5 μg/ml) dissolved in E3 medium from 6 to 48 hours post fertilization (hpf). The survival rate, locomotion, heart rate, hatchability, deformity rate, and body length were analyzed at defined stages. Terminal deoxynucleotidyl transferase nick-end-labeling was used to detect zebrafish embryo apoptosis, and the expression levels of apoptosis-related genes were determined using quantitative real-time reverse transcription PCR and whole-mount in situ hybridization. Larvae at 48 hpf were anesthetized by immersion in E3 culture medium containing 2 μg/ml propofol, the reasonable anesthetic concentration for zebrafish embryos, which caused significant caudal fin dysplasia, light pigmentation, edema, hemorrhage, and spinal deformity, and decreased the hatchability, body length, and heart rate. The numbers of apoptotic cells in propofol-treated 12, 48 and 72 hpf embryos increased significantly, and the mRNA expression levels of intrinsic apoptosis pathway-related casp3a, casp3b, casp9, and baxb genes were upregulated, mainly in the head and tail. Propofol decreased apoptosis in the head and back of 24 hpf zebrafish, which was consistent with the mRNA expression analysis. Our findings demonstrated that zebrafish embryos and larvae exposed to propofol experienced developmental toxicity, which correlated with the intrinsic apoptosis pathway with casp3a, casp3b, casp9, and baxb as the key genes.
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Project description:Increased availability of cannabis and cannabinoid-containing products necessitates the need for understanding how exposure to these compounds can affect development. Using cannabinoid receptor-null zebrafish (cnr1-/- and cnr2-/-), we conducted experiments to assess the roles of these receptors in ∆9-tetrahydrocannabinol (THC) and cannabidiol (CBD) developmental and behavioral toxicity. THC increased mortality and deformities (pericardial and yolk sac edemas, a reduction in size) in cnr1-/- and cnr2-/- fish. Conversely, CBD-induced malformations and mortality were significantly reduced in the cnr1-/- and cnr2-/- larvae. THC and CBD exposure caused significantly decreased larval behavior (96 hpf), however, decreased distance travelled was protected in the cnr1-/- and cnr2-/- fish, suggesting these receptors are responsible for mediating behavioral toxicity. Transcriptomic profiling in cnr+/+ embryos developmentally exposed to 4 μM THC or 0.5 μM CBD revealed that a significant portion of differentially expressed genes were targets of PPARγ, a predicted upstream regulator. In Cnr-positive embryos, co-exposure to the PPARγ inhibitor GW9662 and THC or CBD, there was increased toxicity compared to exposure with THC or CBD alone. Co-treatment in the cnr2-/- fish with GW9662 did not alter the CBD-induced decrease in activity. However, co-treatment with GW9662 did remove the protective effect observed in cnr1-/- fish treated to CBD alone. Collectively, these results indicate that PPARγ, Cnr1, and Cnr2 all play crucial roles in the developmental toxicity of THC and CBD.
2021-01-01 | GSE164128 | GEO
Project description:Carpesii Fructus, the dried fruit of Carpesium abrotanoides L., has been used as a traditional Chinese medicine for centuries to kill intestinal parasites in children. It has been recorded as a mildly toxic medicine in the Chinese pharmacopoeia. However, little proof of its toxicology has been reported in modern pharmacology. This study investigated for the first time its developmental toxicity on zebrafish embryos/larvae from 6 to 96 h post-fertilization (hpf). In addition, the enzymes and genes associated with oxidative stress and apoptosis were tested to investigate the potential toxicologic mechanism preliminarily. The observation of toxicologic endpoints showed the developmental toxicity of Carpesii Fructus. Pericardial edema, yolk sac edema, bleeding tendency, and enlarged yolk were the most commonly occurring morphological changes observed in our study. According to the results of acridine orange staining and morphological observation, the developing heart was speculated to be the target organ of toxicity. Furthermore, Carpesii Fructus exposure changed the activities of defense enzymes, increased malondialdehyde (MDA) content, decreased caspase-3 activity, and altered mRNA levels of related genes (ogg1, p53, Cu/Zn-Sod, Mn-Sod, and Cat↓; Gpx↑) in zebrafish larvae, indicating that oxidative stress and additional apoptosis should have roles in the developmental toxicity of Carpesii Fructus. This is the first study that provides proof of modern pharmacology on the teratogenicity and possible toxicologic mechanism of Carpesii Fructus.
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Project description:Carbendazim (CAR) and enrofloxacin (ENF) are frequently detected in fruits and meat products, respectively. Since most people consume fruits, vegetables, and meat products, combined exposure is possible, necessitating further evaluation of toxic interactions. In this study, the developmental toxicity of separate and combined exposure was examined in zebrafish embryos. Carbendazim exposure at 0.79 mg/L and above significantly affected developmental parameters, while enrofloxacin alone had no substantial effects on these developmental parameters within the selected concentration range (0.10-0.40 mg/L). Surprisingly, ENF antagonized the CAR-evoked reduction in the 48 hpf (hours post-fertilization) hatching rate and the increases in the 96 hpf malformation and lethality rates. The results revealed that the antagonism might be associated with reciprocal effects of these compounds on metabolism-related genes, such as cyp7a1 and apoa1a. These results reveal a complex interaction between ENF and CAR on metabolic regulation during development and highlight the importance of combined assessment for agents with the potential for simultaneous exposure.
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Project description:(1) Background: Disperse Blue 14, Disperse Red 9, Solvent Red 169 and Solvent Yellow 33 have been used to color smoke; however, they have not been comprehensively assessed for their potential health hazards. (2) Methods: To assess the effects of these dyes, zebrafish embryos were exposed from 6 to 120 h post fertilization (hpf) to 10-55 µM Disperse Red 9, 1-50 µM Solvent Red 169, 7.5-13.5 µM Solvent Yellow 33 or 133-314 µM Disperse Blue 14. Embryos were monitored for adverse effects on gene expression at 48 hpf as well as for mortality, development and behavior at 120 hpf. The dyes were examined for their potential to cross the blood-brain barrier. (3) Results: Solvent Yellow 33 and Disperse Blue 14 impaired development and behavior at all concentrations. Disperse Red 9 impaired behavior at all concentrations and development at all concentrations except for 10 µM. Solvent Red 169 caused no effects. Mortality was only seen in Disperse Blue 14 at 261.5 and 314 µM. Gene expression indicated impacts on neurodevelopment and folate and retinol metabolism as potential mechanisms of toxicity. (4) Conclusions: Smoke dyes have a high potential for causing developmental changes and neurotoxicity and should be examined more closely using comprehensive approaches as used here.
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Project description:Perfluoroalkyl substances (PFAS) are a class of synthetic chemicals that are persistent in the environment. Due to concerns linked with longer chain PFAS, shorter chain chemicals were used as replacements, but developmental toxicity assessments of the shorter chain chemicals are limited. The aim of this study was to compare the developmental toxicity of three perfluoroalkyl acids (PFAAs): perfluorooctanoic acid (PFOA), composed of 8 carbon (C8), perfluorohexanoic acid (PFHxA, C6), and perfluorobutanoic acid (PFBA, C4) using the zebrafish (Danio rerio). LC50s at 120 hour post fertilization (hpf) were determined to assess the potency of each PFAA by exposing developing zebrafish (1-120 hpf) to a range of concentrations. In sublethal assessments, zebrafish were exposed to 0, 4, 40, or 400 parts per billion (ppb; µg/L) of the PFAAs throughout embryonic development (1-72 hpf). Effects of the embryonic exposure on locomotor activities was completed with the visual motor response test at 120 hpf. At 72 hpf, morphological changes including total body length, head length, and head width were assessed. Additionally, transcriptomic profiles of PFOA, PFHxA, and PFBA were determined at 72 hpf to compare altered molecular and disease pathways. The LC50 ranking was PFOA > PFHxA > PFBA, which followed trend as expected based on chain length. PFOA caused hyperactivity and PFBA hypoactivity, while PFHxA did not change behavior. PFOA, PFHxA, and PFBA caused morphological and transcriptomic alterations that were unique for each chemical and were concentration dependent. Cancer was a top enriched disease for PFOA, while FXR/RXR activation was a top canonical pathway in all PFBA exposures. Overall, an embryonic exposure to PFOA, PFHxA, or PFBA resulted in morphological alterations in zebrafish eleuthero-embryos; however, only PFOA and PFBA induced neurobehavioral alterations. The transcriptomic profile of each chemical was unique indicating different toxicity mechanisms and were aligned with human adverse health outcomes supporting predictive value.
2022-08-18 | GSE211172 | GEO
Project description:Perfluoroalkyl substances (PFAS) are a class of synthetic chemicals that are persistent in the environment. Due to concerns linked with longer chain PFAS, shorter chain chemicals were used as replacements, but developmental toxicity assessments of the shorter chain chemicals are limited. The aim of this study was to compare the developmental toxicity of three perfluoroalkyl acids (PFAAs): perfluorooctanoic acid (PFOA), composed of 8 carbon (C8), perfluorohexanoic acid (PFHxA, C6), and perfluorobutanoic acid (PFBA, C4) using the zebrafish (Danio rerio). LC50s at 120 hour post fertilization (hpf) were determined to assess the potency of each PFAA by exposing developing zebrafish (1-120 hpf) to a range of concentrations. In sublethal assessments, zebrafish were exposed to 0, 4, 40, or 400 parts per billion (ppb; µg/L) of the PFAAs throughout embryonic development (1-72 hpf). Effects of the embryonic exposure on locomotor activities was completed with the visual motor response test at 120 hpf. At 72 hpf, morphological changes including total body length, head length, and head width were assessed. Additionally, transcriptomic profiles of PFOA, PFHxA, and PFBA were determined at 72 hpf to compare altered molecular and disease pathways. The LC50 ranking was PFOA > PFHxA > PFBA, which followed trend as expected based on chain length. PFOA caused hyperactivity and PFBA hypoactivity, while PFHxA did not change behavior. PFOA, PFHxA, and PFBA caused morphological and transcriptomic alterations that were unique for each chemical and were concentration dependent. Cancer was a top enriched disease for PFOA, while FXR/RXR activation was a top canonical pathway in all PFBA exposures. Overall, an embryonic exposure to PFOA, PFHxA, or PFBA resulted in morphological alterations in zebrafish eleuthero-embryos; however, only PFOA and PFBA induced neurobehavioral alterations. The transcriptomic profile of each chemical was unique indicating different toxicity mechanisms and were aligned with human adverse health outcomes supporting predictive value.
2022-08-18 | GSE211171 | GEO