RESUMO
OBJECTIVES: Anti-tuberculosis drugs rifampicin and pyrazinamide combination in pregnancy can cause morphological, visceral and skeletal damage. Several studies showed that propolis improves pregnancy outcomes. This study aims to determine the fetal protective effect of propolis in BALB/c mice given the anti-tuberculosis drug combination rifampicin and pyrazinamide. METHODS: A total of 21 pregnant mice were randomly divided into three groups: the normal group (N) was given distilled water as a vehicle, the positive control group (RP) were given rifampicin 15â¯mg/kg BW, pyrazinamide 35â¯mg/kg BW and the treatment group (IP) were given rifampicin 15â¯mg/kg BB, pyrazinamide 35â¯mg/kg BW and propolis 400â¯mg/kg BW. The treatment was given during the period of organogenesis, from day 6 to day 15. Laparotomy was performed on the 18th day of pregnancy. Maternal and fetal body weight, fetal length, number of fetuses, and skeletal defects of fetuses were used as parameters to identify the teratogenic effect. All data were analyzed using the ANOVA. RESULTS: All groups significantly differed between maternal and fetal body weights (p<0.05). The administration of rifampicin-pyrazinamide and propolis during pregnancy did not significantly affect the number of fetuses (p>0.05). The administration of propolis protects the fetus from skeletal abnormalities. While in the RP and IP groups, we can find resorption sites and haemorrhagic. CONCLUSIONS: This study may suggest the protective effects of propolis against rifampicin pyrazinamide-induced impaired pregnancy.
Assuntos
Camundongos Endogâmicos BALB C , Própole , Pirazinamida , Rifampina , Animais , Própole/farmacologia , Feminino , Gravidez , Pirazinamida/toxicidade , Camundongos , Abelhas , Feto/efeitos dos fármacos , Indonésia , Antituberculosos/toxicidade , Anormalidades Induzidas por Medicamentos/prevenção & controle , Substâncias Protetoras/farmacologia , Complicações na Gravidez/tratamento farmacológico , Complicações na Gravidez/induzido quimicamenteRESUMO
Alternanthera littoralis P. Beauv is a plant native to Brazil that exhibits various beneficial activities including antioxidant, antibacterial, antifungal, antiprotozoal, anti-hyperalgesic, and anti-inflammatory properties. The aim of this study was to assess the impact of the ethanol extract of Alternanthera littoralis (EEAl) on reproductive outcomes, embryofetal development, and DNA integrity of pregnant female mice. Pregnant Swiss female mice were randomly assigned to three experimental groups (n = 10): controls were administered either 1% Tween 80 (vehicle), EEAl 100 mg/kg or EEAl 1000 mg/kg. Treatment was administered through gavage during the gestational period until day 18. On gestational days 16, 17, and 18, a peripheral blood sample from the tail vein was obtained for DNA integrity analysis (micronucleus test). After the last collection, animals were euthanized by cervical dislocation. Maternal organs and fetuses were collected, weighed, and subsequently analyzed. Reproductive outcome parameters were assessed by measurement of number of implants, live fetuses, and resorptions. Embryonic development was determined by adequacy of weight for gestational age as well as determination of external, visceral, and skeletal malformations. Data demonstrated that EEAl did not produce maternal toxicity at either dose associated with no marked alterations in any of the reproductive outcome parameters including implantation sites, live/dead fetuses ratio, fetal viability, post-implantation losses, resorptions, and resorption rate. However, EEAl 1000 group reduced embryofetal development by lowering placental weight. In addition, there was an increase in the frequency of external and skeletal malformations in the EEAl 1000 group, which could not be attributed to extract exposure as these values were within control levels. Based upon our findings, evidence indicates that the EEAl at the concentrations employed in our study may be considered safe for use during pregnancy and extracts of this plant show potential for development of phytomedicines to be used in pregnancy.
Assuntos
Anormalidades Induzidas por Medicamentos , Placenta , Animais , Feminino , Camundongos , Gravidez , DNA/farmacologia , Etanol , Feto , Idade Gestacional , ReproduçãoRESUMO
INTRODUCTION: The potential teratogenic risk of traditional Chinese medicine (TCM) is of widespread concern; however, related evidence is largely absent in humans. This study aimed to compare the prevalence of congenital malformations between pregnant women with and without TCM exposure. MATERIAL AND METHODS: This was a multicenter prospective cohort study of 17 713 women who participated in a survey on periconceptional TCM exposure. Primary outcome was congenital malformations diagnosed from a survey conducted on the day 42 after delivery. RESULTS: A total of 16 751 pregnant women with 273 congenital malformations were included in the analysis. Fetuses exposed to TCM had an increased risk of congenital malformations compared to those without exposure (odds ratio [OR] 2.10; 95% confidence interval [CI] 1.09-4.02) after controlling for potential confounders. There were significant associations with congenital malformations in women with early pregnant exposure (OR 2.04, 95% CI 1.00-4.20) and for those who received ≥2 TCM formulas (OR 5.84, 95% CI 1.44-23.65). Pre-pregnancy TCM exposure was significantly associated with an increased risk of congenital heart defects (OR 12.69; 95% CI 3.01-53.51). CONCLUSIONS: Periconceptional TCM exposure is associated with an increased risk of congenital malformation. This effect was cumulative and sensitive to periconceptional age. Therefore, TCM deserves more attention and should be used cautiously for pregnant women and those trying to become pregnant.
Assuntos
Anormalidades Induzidas por Medicamentos , Anormalidades Congênitas , Cardiopatias Congênitas , Complicações na Gravidez , Feminino , Gravidez , Humanos , Estudos Prospectivos , Medicina Tradicional Chinesa/efeitos adversos , Cardiopatias Congênitas/epidemiologia , Cardiopatias Congênitas/complicações , Exposição Materna/efeitos adversos , Anormalidades Induzidas por Medicamentos/epidemiologia , Anormalidades Induzidas por Medicamentos/etiologia , Anormalidades Congênitas/epidemiologia , Anormalidades Congênitas/etiologiaRESUMO
An estimated 60 million people worldwide suffer from epilepsy, half of whom are women. About one-third of women with epilepsy are of childbearing age. The childbirth rate in women with epilepsy is about 20-40% lower compared to that of the general population, which may be partly due to a lower number of these women being in relationships. Lower fertility in women with epilepsy may be linked to the disease itself, but it is mainly a result of the treatment provided. Valproate, as an antiepileptic drug inhibiting histone deacetylases, may affect the expression of genes associated with cell cycle control and cellular differentiation. Evidently, this drug is associated with the risk of malformations although other antiepileptic drugs (AEDs) may also trigger birth defects, however, to a lower degree. Valproate (and to a certain degree other AEDs) may induce autism spectrum disorders and attention deficit hyperactivity disorder. The main mechanism responsible for all negative effects of prenatal exposure to valproate seems inhibition of histone deacetylases. Animal studies show a reduction in the expression of genes involved in social behavior and an increase in hippocampal cytokines. Valproate-induced oxidative stress may also contribute to neural tube defects. Interestingly, paternal exposure to this AED in mice may trigger neurodevelopmental disorders as well although a population-based cohort study does not confirm this effect. To lower the risk of congenital malformations and neurodevelopmental disorders, a single AED at the optimal dose and supplementation with folic acid is recommended. VPA should be avoided in women of childbearing age and especially during pregnancy.
Assuntos
Epilepsia/tratamento farmacológico , Ácido Valproico/efeitos adversos , Anormalidades Induzidas por Medicamentos/tratamento farmacológico , Anticonvulsivantes/uso terapêutico , Transtorno do Deficit de Atenção com Hiperatividade/induzido quimicamente , Transtorno do Espectro Autista/induzido quimicamente , Epilepsia/complicações , Feminino , Ácido Fólico/uso terapêutico , Inibidores de Histona Desacetilases/efeitos adversos , Inibidores de Histona Desacetilases/farmacologia , Humanos , Defeitos do Tubo Neural , Gravidez , Complicações na Gravidez/tratamento farmacológico , Efeitos Tardios da Exposição Pré-Natal/induzido quimicamente , Ácido Valproico/uso terapêuticoRESUMO
ETHNOPHARMACOLOGICAL RELEVANCE: The sclerotium of Lignosusrhinocerus (Cooke) Ryvarden is highly valued for its purported medicinal properties. The decoction and macerated materials prepared from the sclerotium are used for treating cancer and other ailments based on extensive traditional knowledge. Scientific evidence from in vitro cytototoxicity, anti-inflammatory and immunomodulatory analyses showed the effectiveness of sclerotial water extracts but toxicity assessment of such preparations has not been reported. AIM OF THE STUDY: This study aimed to compare the differential toxicity and teratogenicity (if any) of the hot water (HW) and cold water (CW) extracts of both wild and cultivated sclerotium on zebrafish (Danio rerio) embryos. MATERIALS AND METHODS: Zebrafish embryos were treated with varying concentrations of the sclerotial HW and CW extracts (0.3-500 µg/mL) for 72 h until hatching. The hatching, mortality and heartbeat rate of the embryos as well as the potential teratogenic effect of the extracts were assessed in embryos post-treatment with the extracts. RESULTS: While the sclerotial HW extracts were nontoxic (LC50 > 500 µg/mL), the sclerotial CW extracts delayed the hatching of the embryos up to 48 h and showed slight toxicity with LC50 values of 398.4 µg/mL and 428.3 µg/mL for the cultivated and wild sclerotium, respectively. The sclerotial CW extracts also induced minor tachycardia in zebrafish larvae. Phenotypic assessment revealed that, while yolk sac edema was observed at high concentrations (300 and 500 µg/mL) of all extracts, curved trunk and bent tail were only observed in the embryos treated with CW extracts of wild sclerotium (300 and 500 µg/mL) but not for CW extracts of cultivated sclerotium at similar concentrations. CONCLUSION: The sclerotial water extracts of L.rhinocerus prepared using different methods have varying degree of toxicity and teratogenicity in zebrafish embryos with the sclerotial CW extracts showed higher toxicity than the HW extracts.
Assuntos
Produtos Biológicos , Temperatura Baixa , Temperatura Alta , Extração Líquido-Líquido/métodos , Polyporaceae , Água , Anormalidades Induzidas por Medicamentos/etiologia , Animais , Antineoplásicos/química , Antineoplásicos/farmacologia , Antineoplásicos/toxicidade , Produtos Biológicos/química , Produtos Biológicos/farmacologia , Produtos Biológicos/toxicidade , Embrião não Mamífero/efeitos dos fármacos , Etnofarmacologia/métodos , Teratogênese/efeitos dos fármacos , Teratogênicos/química , Testes de Toxicidade , Peixe-ZebraRESUMO
The aim of this study was to explore the mechanism of neurodevelopmental toxicity of alumina nanoparticles (AlNPs) on zebrafish larvae, specifically, the toxic effects of AlNPs of different particle sizes and of dissolved aluminum ions. AlNPs with sizes of 13 nm (13 nm-Al) and 50 nm (50 nm-Al) were used as the main research objects; while nanocarbon particles with sizes of 13 nm (13 nm-C) and 50 nm (50 nm-C) as particle-size controls; and an aluminum chloride solution (Al3+) as an ion control. Zebrafish embryos were exposed to different treatments from 6 h post-fertilization (hpf) to 168 hpf. Deformities were observed at different time points. Neurodevelopmental behavior tests were carried out, and oxidative stress responses and transcriptional alterations in autophagy-related genes were assessed. Malformations occurred in the 13 nm-Al, 50 nm-Al, and Al3+ treated groups at different developmental stages of zebrafish larval, but no malformations were observed in the 13 nm-C or 50 nm-C groups. In addition, the average speed, distance travelled and thigmotaxis in zebrafish larvae decreased in the AlNPs treated group, and the effects were related to the particle sizes. Furthermore, increases in the oxidative stress response and autophagy-related genes expression were also related to the particle sizes of AlNPs as well. In conclusion, the mechanism underlying the neurodevelopmental toxicity of AlNPs on zebrafish larvae mainly depended on the size of the nanoparticles, and dissolved Al3+ also contributes to the toxic effects.
Assuntos
Óxido de Alumínio/toxicidade , Nanopartículas Metálicas/toxicidade , Transtornos do Neurodesenvolvimento/induzido quimicamente , Anormalidades Induzidas por Medicamentos/etiologia , Animais , Feminino , Larva/efeitos dos fármacos , Larva/crescimento & desenvolvimento , Masculino , Atividade Motora/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Tamanho da Partícula , Peixe-Zebra/crescimento & desenvolvimentoRESUMO
We have been conducting research with the aim of generating evidence for the safety of perinatal drugs. As a result of reviewing the records of inquiries to the Drug Information Office of our hospital, we found a large discrepancy between the description of perinatal drugs in package inserts in Japan and the description of the Pregnancy Risk Category according to the U.S. Food and Drug Administration. In the Japan Environment and Children's Study (JECS), we determined the proportion of drug and supplement use among 97464 pregnant women. We clarified that prescriptions of antihypertensive drugs for pregnant women increased during the second half of pregnancy, while prescriptions of anti-epileptic and anti-anxiety drugs decreased after pregnancy using a claims database. A survey of pharmacists and pharmacy students revealed a lack of awareness of effective folic acid intake to reduce the risk of neural tube defects in infants. The percentage of pre-pregnancy folic acid supplementation among pregnant women participating in the Babies and their Parents' Longitudinal Observation in Suzuki Memorial Hospital on Intrauterine Period (BOSHI) study, the JECS, and the Tohoku Medical Megabank (TMM) Birth and Three-Generation (BirThree) cohort study was 6.3-18.0%. As a result of close examination of the records of inquiries to the Drug Information Office of our hospital, and of cases in which our lactation plan sheet was applied, it was found that there were discrepancies between the information on the drug package insert and the information on Medications & Mother's Milk, etc. in Japan. The results obtained have been clinically applied in daily practice and we are continuing our research while taking measures.
Assuntos
Suplementos Nutricionais , Serviços de Informação sobre Medicamentos , Medicamentos sob Prescrição , Segurança , Anormalidades Induzidas por Medicamentos/epidemiologia , Adulto , Conscientização , Aleitamento Materno , Estudos de Coortes , Bases de Dados Factuais , Rotulagem de Medicamentos , Feminino , Ácido Fólico/administração & dosagem , Humanos , Recém-Nascido , Japão , Defeitos do Tubo Neural/prevenção & controle , Farmacêuticos , Gravidez , Medicamentos sob Prescrição/efeitos adversos , Inquéritos e Questionários , Adulto JovemRESUMO
Traditionally, understanding potential developmental toxicity from pharmaceutical exposures has been based on the results of ICH guideline studies in two species. However, support is growing for the use of weight of evidence approaches when communicating the risk of developmental toxicity, where the intended pharmacologic mode of action affects fundamental pathways in developmental biology or phenotypic data from genetically modified animals may increasingly be included in the overall assessment. Since some concern surrounds the use of data from knockout (KO) mice to accurately predict the risk for pharmaceutical modulation of a target, a deeper understanding of the relevance and predictivity of adverse developmental effects in KO mice for pharmacological target modulation is needed. To this end, we compared the results of embryo-fetal development (EFD) studies for 86 drugs approved by the FDA from 2017 to 2019 that also had KO mouse data available in the public domain. These comparisons demonstrate that data from KO mouse models are overall highly predictive of malformations or embryo-fetal lethality (MEFL) from EFD studies, but less so of a negative outcome in EFD studies. This information supports the use of embryo-fetal toxicity data in KO models as part of weight of evidence approaches in the communication of developmental toxicity risk of pharmaceutical compounds.
Assuntos
Anormalidades Induzidas por Medicamentos , Avaliação Pré-Clínica de Medicamentos/métodos , Modelos Animais , Teratogênicos/toxicidade , Animais , Embrião de Mamíferos/efeitos dos fármacos , Morte Fetal/etiologia , Camundongos KnockoutRESUMO
This study focused on evaluating the potency of Methyl Palmitate in reducing in vivo toxicity with enhancement of anti-cancer effects of Sorafenib. In vitro anti-cancer effects on human Hep-G2 cell line were analysed by MTT, Trypan blue, clonogenic, wound scratch migration and TUNEL assays. An in vivo study for anti-angiogenesis effect, toxicity and teratogenicity was analysed in Zebrafish embryos. The combination of Sorafenib (4.5 µmol/L) with Methyl Palmitate (3 mmol/L) significantly enhanced anti-cancer effects on Hep-G2 cell line by increasing cytotoxicity (P ≤ .05 in MTT assay; P ≤ .01 in Trypan blue assay), apoptosis (P ≤ .05) and decreasing the metastatic migration (P ≤ .01) than Sorafenib alone treatment. A prominent inhibition of angiogenesis in vivo was observed for combination treatment. At 5 dpf, only <20% toxicity was observed for 3 mmol/L Methyl palmitate while it was 65.75% for Sorafenib treatment which implies that it is a safer dose for in vivo treatments. A highly significant (P ≤ .001) reduction (43.20%) in toxicity was observed in combination treatment. Thus, the Sorafenib-Methyl Palmitate combination showed a promising treatment effect with significantly reduced in vivo toxicity when compared with Sorafenib alone treatment, and hence the Methyl Palmitate may serve as a good adjuvant for Sorafenib therapy.
Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/farmacologia , Carcinoma Hepatocelular/tratamento farmacológico , Neoplasias Hepáticas/tratamento farmacológico , Palmitatos/administração & dosagem , Sorafenibe/administração & dosagem , Anormalidades Induzidas por Medicamentos/etiologia , Inibidores da Angiogênese/farmacologia , Animais , Apoptose/efeitos dos fármacos , Movimento Celular/efeitos dos fármacos , Células Hep G2 , Humanos , Palmitatos/farmacologia , Palmitatos/toxicidade , Sorafenibe/farmacologia , Sorafenibe/toxicidade , Peixe-ZebraRESUMO
ETHNOPHARMACOLOGICAL RELEVANCE: Clerodendrum cyrtophyllum Turcz has been used in traditional medicine for the treatment of various diseases. In spite of its therapeutic applications, research on its toxicity and teratogenicity is still limited. AIM OF THE STUDY: The study aimed to investigate the developmental toxicity of the ethanol extract of C. cyrtophyllum (EE) in zebrafish embryo model. MATERIAL AND METHODS: Major compounds from crude ethanol extract of Clerodendron cyrtophyllum Turcz leaves were determined using HPLC-DAD-Orbitrap-MS analysis. The developmental toxicity of EE were investigated using zebrafish embryo model. Zebrafish embryos at 6 h post-fertilization (hpf) were treated with EE at different concentrations. Egg coagulation, mortality, hatching, yolk sac edema, pericardial edema and teratogenicity were recorded each day for during a 5-day exposure. At time point 120 hpf, body length, pericardial area, heartbeat and yolk sac area were assessed. In order to elucidate molecular mechanisms for the developmental toxicity of EE, we further evaluated the effects of the EE on the expression of genes involved on signaling pathways affecting fish embryo's development such as heart development (gata5, myl7, myh6, has2, hand2, nkx 2.5), oxidative stress (cat, sod1, gpx4, gstp2), wnt pathway (ß-catenin, wnt3a, wnt5, wnt8a, wnt11), or cell apoptosis (p53, bax, bcl2, casp3, casp8, casp9, apaf-1, gadd45bb) using qRT-PCR analysis. RESULTS: Our results demonstrated that three major components including acteoside, cirsilineol and cirsilineol-4'-O-ß-D-glucopyranoside were identified from EE. EE exposure during 6-96 h post-fertilization (hpf) at doses ranging from 80 to 200 µg/mL increased embryo mortality and reduced hatching rate. EE exposure at 20 and 40 µg/mL until 72-120 hpf induced a series of malformations, including yolk sac edema, pericardial edema, spine deformation, shorter body length. Based on two prediction models using a teratogenic index (TI), a 25% lethality concentration (LD25) and the no observed-adverse-effect level (NOAEL), EE is considered as teratogenic for zebrafish embryos with TI (LC50/EC50) and LD25/NOAEC values at 96 hpf reaching 3.87 and 15.73 respectively. The mRNA expression levels of p53, casp8, bax/bcl2, gstp2, nkx2.5, wnt3a, wnt11, gadd45bb and gata5 were significantly upregulated by EE exposure at 20 and 40 µg/mL while the expression of wnt5, hand2 and bcl2 were downregulated. CONCLUSIONS: These results provide evidence for toxicity effects of EE to embryo stages and provide an insight into the potential toxicity mechanisms on embryonic development.
Assuntos
Anormalidades Induzidas por Medicamentos/etiologia , Clerodendrum/toxicidade , Embrião não Mamífero/efeitos dos fármacos , Extratos Vegetais/toxicidade , Peixe-Zebra/embriologia , Anormalidades Induzidas por Medicamentos/genética , Anormalidades Induzidas por Medicamentos/metabolismo , Anormalidades Induzidas por Medicamentos/patologia , Animais , Apoptose/efeitos dos fármacos , Clerodendrum/química , Relação Dose-Resposta a Droga , Embrião não Mamífero/metabolismo , Embrião não Mamífero/patologia , Etanol/química , Regulação da Expressão Gênica no Desenvolvimento , Nível de Efeito Adverso não Observado , Estresse Oxidativo/efeitos dos fármacos , Extratos Vegetais/isolamento & purificação , Solventes/química , Via de Sinalização Wnt/efeitos dos fármacos , Proteínas de Peixe-Zebra/genética , Proteínas de Peixe-Zebra/metabolismoRESUMO
Organophosphates (OPs) and pyrethroids (PYRs) are extensively used pesticides and often occur in the form of mixture, whereas little was known about their joint toxicities. We aim to investigate the individual and joint effects of OPs and PYRs exposure on zebrafish embryo by employing chlorpyrifos (CPF) and deltamethrin (DM) as representatives. Zebrafish embryos at 2 hours post fertilization (hpf) were exposed to CPF (4.80, 39.06, and 78.13 µg/L), DM exposure (0.06, 1.60, and 3.19 µg/L), and CPF + DM (4.80 + 0.06, 39.06 + 1.60, and 78.13 + 3.19 µg/L) until 144 hpf. Embryonic development, locomotor activity, and metabolomic changes were recorded and examined. Results displayed that individual exposure to CPF and DM significantly increased the mortality and malformation rate of zebrafish embryos, but decreased hatching rate was only found in CPF + DM co-exposure groups (p < .05). Meanwhile, individual CPF exposure had no detrimental effect on locomotor activity, high dose of individual CPF exposure decreased the swimming speed but had adaptability to the conversion from dark to light, whereas high dose of CPF + DM co-exposure exhibited not only significant decline in swimming speed but also no adaptability to the repeated stimulations, suggesting deficit in learning and memory function. In metabolomic analysis, individual CPF exposure mainly influenced the metabolism of glycerophospholipids and amino acids, individual DM exposure mainly influenced glycerophospholipids, and CPF + DM co-exposure mainly influenced glycerophospholipids and amino acids. Taken together, our findings suggested the embryonic toxicities and neurobehavioral changes caused by CPF and/or DM exposure. The disorder metabolomics of glycerophospholipids and amino acids might be involved in the underlying mechanism of those toxicities.
Assuntos
Clorpirifos/toxicidade , Embrião não Mamífero/efeitos dos fármacos , Desenvolvimento Embrionário/efeitos dos fármacos , Inseticidas/toxicidade , Locomoção/efeitos dos fármacos , Metabolômica , Nitrilas/toxicidade , Piretrinas/toxicidade , Peixe-Zebra , Anormalidades Induzidas por Medicamentos/patologia , Adaptação Fisiológica/efeitos dos fármacos , Aminoácidos/metabolismo , Animais , Feminino , Glicerofosfolipídeos/metabolismo , Aprendizagem/efeitos dos fármacos , Masculino , Memória/efeitos dos fármacos , NataçãoRESUMO
OBJECTIVE: To determine whether there is a relationship between folic acid dose and the degree of protection against valproate-associated and other antiepileptic drug (AED)-associated fetal structural malformations in women with AED-treated epilepsy. METHODS: Statistical analysis of data from the Raoul Wallenberg Australian Register of Antiepileptic Drugs in Pregnancy involving 2104 folic acid-treated pregnancies in women with epilepsy. RESULTS: Multiple variable logistic regression failed to demonstrate any statistically significant effect of folic acid dosage in reducing overall fetal malformation rates in women taking folic acid either before and during pregnancy (Pâ¯=â¯0.640) or during early pregnancy only (Pâ¯=â¯0.801), and in reducing spina bifida occurrence rates (Pâ¯=â¯0.409). CONCLUSIONS: In the present state of knowledge, it would seem misguided to hope that a folic acid dose of 5â¯mg/day taken before and during pregnancy would protect against the occurrence of valproate-associated and other AED-associated fetal structural malformations. Future studies are required to determine whether high-dose periconceptional folate use may decrease the risk of other valproate-associated adverse fetal outcomes, including impaired post-natal neurobehavioral development.
Assuntos
Anormalidades Induzidas por Medicamentos , Complicações na Gravidez , Anormalidades Induzidas por Medicamentos/epidemiologia , Anormalidades Induzidas por Medicamentos/etiologia , Anticonvulsivantes/efeitos adversos , Austrália , Feminino , Ácido Fólico , Humanos , Gravidez , Complicações na Gravidez/tratamento farmacológico , Ácido Valproico/efeitos adversosRESUMO
Cytarabine (Ara-C) is a nucleoside analogue used in the treatment of cancers and viral infections. It has teratogenic potential and causes a variety of birth defects in fetuses. Alpha-lipoic acid (ALA) is a natural antioxidant offers protection against the developmental toxicity induced by drug- or toxicant-exposure or pathological conditions. This study was aimed at evaluating the protective effect of ALA against Ara-C induced developmental toxicity in rat fetus. Pregnant rats divided into five groups and received normal saline, ALA200 mg/kg, Ara-C12.5 mg/kg, Ara-C25 mg/kg and, Ara-C25 mg/kg plus ALA200 mg/kg respectively from gestational day (GD) 8 to GD14 and sacrificed on GD21. Ara-C treatment led to a significant and dose-dependent decrease in food intake, weight gain, placental weight, and an increase in oxidative stress in pregnant rats. Further, the in-utero exposure to Ara-C led to an increase in fetal mortality, resorptions, oxidative stress, external morphological anomalies and limb abnormalities, and impaired ossification. Co-administration of ALA resulted in amelioration of the footprints of Ara-C induced toxicity in pregnant rats as well as the fetus. These findings indicate that the ALA supplementation offers protection against developmental toxicity caused by Ara-C prenatal exposure in rats.
Assuntos
Anormalidades Induzidas por Medicamentos/tratamento farmacológico , Antineoplásicos/toxicidade , Citarabina/metabolismo , Citarabina/toxicidade , Desenvolvimento Fetal/efeitos dos fármacos , Ácido Tióctico/farmacologia , Ácido Tióctico/uso terapêutico , Animais , Feminino , Humanos , Modelos Animais , Neoplasias/tratamento farmacológico , Substâncias Protetoras/farmacologia , Substâncias Protetoras/uso terapêutico , RatosRESUMO
A ozonioterapia vem se demonstrando uma ferramenta promissora na prevenção de infecções e no auxílio da reparação tecidual, conciliando com os desafios no tratamento da osteonecrose dos maxilares induzida por medicamentos (ONM-M), este projeto objetiva analisar os efeitos da ozonioterapia, em 55 ratas senis (18 meses), entre 300-350g, induzidas a osteonecrose via medicamentosa (Zoledronato 100µg/kg), após exodontia do primeiro molar inferior. Os animais foram divididos em 4 grupos equitativos (10 ratas por grupo), o primeiro grupo SAL, recebeu aplicações de soro fisiológico por 7 semanas, grupo SAL + OZ recebeu aplicações de soro fisiológico por 7 semanas e o tratamento com a ozonioterapia (0,7mg/kg) a cada 2 dias por 28 dias, o grupo ZOL recebeu aplicações de zoledronato (100µg/kg) por 7 semanas e por último o grupo ZOL + OZ recebeu também aplicações de zoledronato no mesmo protocolo e foi tratado com a ozonioterapia (0,7mg/kg) a cada 2 dias por 28 dias. Todos as ratas receberam a antibioticoterapia (Cristacilina® 0,1ml/kg por dia) iniciando 3 dias antes do procedimento de extração, se estendendo até 4 dias de pós-operatório, passaram pela extração do molar na terceira semana de experimento e foram submetidas a eutanásia na sétima semana de experimento. Após a eutanásia as mandíbulas foram ressecadas, reduzidas e preparadas para as análises microtomográficas (caracterização óssea do osso senil (MCT0) e após terapia com zoledronato (MCT1ZOL) contra seu par controle (MCT1SAL), parâmetros volumétricos (Bv,Bv.Tv,Tb.Th,Tb.N,Tb.Sp,Po.Tot) dos grupos experimentais), histométricas (porcentagem de osso neoformado e porcentagem de osso não vital) e imunoistoquímicas (expressão de TNFa, IL-1b, VEGF, OCN e TRAP). Os resultados da caracterização óssea não apresentaram diferença quando comparado os grupos experimentais (p> 0,05), possivelmente devido ao pouco tempo decorrido na terapia com zoledronato. Os demais resultados comparando os grupos experimentais mostrou com diferenças estatisticamente significativas (p< 0,05) uma característica de osso vítreo, denso, sem vitalidade, pobre em vascularização, com elevados valores para marcadores de inflamação, traduzindo isso em osteonecrose dos maxilares relacionada com a medicação, destoando principalmente do grupo controle SAL, que apresentou melhora na reparação alveolar e características de osso vital e vascularizado. A ozonioterapia (ZOL+OZ, SAL+OZ) apresentou valores significantes estatisticamente quando comparado ao grupo sem tratamento, traduzindo em melhora na vascularização do tecido ósseo, em melhora reparacional do alvéolo, modulação da inflamação local e o aparecimento/manutenção de células osteoblásticas ativas (p< 0,05). Mostrando-se uma terapia viável no controle/tratamento da osteonecrose dos maxilares relacionado com medicamentos(AU)
Ozone therapy has been shown to be a promising tool in the prevention of infections and in the aid of tissue repair, reconciling with the challenges in the treatment of medication-induced jaw osteonecrosis (ONM-M), this project aims to analyze the effects of ozone therapy in 55 rats senile (18 months), between 300-350g, induced to osteonecrosis via medication (Zoledronate 100µg / kg), after extraction of the lower first molar. The animals were divided into 4 equitable groups (ten rats per group), the first SAL group, received saline applications for 7 weeks, SAL + OZ group received saline applications for 7 weeks and ozone therapy (0, 7mg / kg) every 2 days for 28 days, the ZOL group received applications of zoledronate (100µg / kg) for 7 weeks and lastly the ZOL + OZ group also received applications of zoledronate in the same protocol and was treated with ozone therapy (0.7mg / kg) every 2 days for 28 days. All rats received antibiotic therapy (Cristacilina® 0.1ml / kg per day) starting 3 days before the extraction procedure, extending up to 4 days after the operation, underwent molar extraction in the third week of the experiment and were submitted to euthanasia in the seventh week of experiment. After euthanasia, the mandibles were resected, reduced and prepared for microtomographic analysis (bone characterization of senile bone (MCT0) and after therapy with zoledronate (MCT1ZOL) against its control pair (MCT1SAL), volumetric parameters (Bv, Bv.Tv, Tb .Th, Tb.N, Tb.Sp, Po.Tot) of the experimental groups), histometric (percentage of newly formed bone and percentage of non-vital bone) and immunohistochemistry (expression of TNFa, IL-1b, VEGF, OCN and TRAP) . The results of bone characterization did not show any difference when comparing the experimental groups (P> 0.05), possibly due to the short time elapsed in zoledronate therapy. The other results comparing the experimental groups showed with statistically significant differences (P < 0.05) a characteristic of vitreous bone, dense, without vitality, poor in vascularization, with high values for inflammation markers, translating this into a related jaw osteonecrosis with medication, disagreeing mainly with the SAL control group, which showed improvement in alveolar repair and characteristics of a vital and vascularized bone. Ozone therapy (ZOL + OZ, SAL + OZ) showed statistically significant values when compared to the untreated group, translating into an improvement in bone tissue vascularization, a reparational improvement of the alveolus, modulation of local inflammation and the appearance/maintenance of cells active osteoblasts (P < 0.05). Showing to be a viable therapy in the control/treatment of osteonecrosis of the jaws related to drugs(AU)
Assuntos
Animais , Ratos , Osteonecrose/induzido quimicamente , Anormalidades Induzidas por Medicamentos , Osteonecrose da Arcada Osseodentária Associada a Difosfonatos , Ácido Zoledrônico/efeitos adversos , Ácido Zoledrônico/intoxicação , Ácido Zoledrônico/toxicidade , Ozonioterapia , Mandíbula/anormalidades , Maxila/anormalidades , Osteoblastos , Osso e Ossos , Ratos Wistar , Arcada OsseodentáriaRESUMO
Traditionally, understanding potential developmental toxicity from pharmaceutical exposures has been based on the results of ICH guideline studies in two species. However, support is growing for the use of weight of evidence approaches when communicating the risk of developmental toxicity, where the intended pharmacologic mode of action affects fundamental pathways in developmental biology or phenotypic data from genetically modified animals may increasingly be included in the overall assessment. Since some concern surrounds the use of data from knockout (KO) mice to accurately predict the risk for pharmaceutical modulation of a target, a deeper understanding of the relevance and predictivity of adverse developmental effects in KO mice for pharmacological target modulation is needed. To this end, we compared the results of embryo-fetal development (EFD) studies for 86 drugs approved by the FDA from 2017 to 2019 that also had KO mouse data available in the public domain. These comparisons demonstrate that data from KO mouse models are overall highly predictive of malformations or embryo-fetal lethality (MEFL) from EFD studies, but less so of a negative outcome in EFD studies. This information supports the use of embryo-fetal toxicity data in KO models as part of weight of evidence approaches in the communication of developmental toxicity risk of pharmaceutical compounds.
Assuntos
Anormalidades Induzidas por Medicamentos , Avaliação Pré-Clínica de Medicamentos/métodos , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Perda do Embrião , Morte Fetal , Modelos Animais , Animais , Desenvolvimento Embrionário/efeitos dos fármacos , Desenvolvimento Fetal/efeitos dos fármacos , Camundongos KnockoutRESUMO
Failure to predict drug-induced toxicity reactions is a major problem contributing to a high attrition rate and tremendous cost in drug development. Drug screening in X. laevis embryos is high-throughput relative to screening in rodents, potentially making them ideal for this use. Xenopus embryos have been used as a toxicity model in the frog embryo teratogenesis assay on Xenopus (FETAX) for the early stages of drug safety evaluation. We previously developed compound-screening methods using Xenopus embryos and believe they could be used for in vitro drug-induced toxicity safety assessment before expensive preclinical trials in mammals. Specifically, Xenopus embryos could help predict drug-induced hepatotoxicity and consequently aid lead candidate prioritization. Here we present methods, which we have modified for use on Xenopus embryos, to help measure the potential for a drug to induce liver toxicity. One such method examines the release of the liver-specific microRNA (miRNA) miR-122 from the liver into the vasculature as a result of hepatocellular damage, which could be due to drug-induced acute liver injury. Paracetamol, a known hepatotoxin at high doses, can be used as a positive control. We previously showed that some of the phenotypes of mammalian paracetamol overdose are reflected in Xenopus embryos. Consequently, we have also included here a method that measures the concentration of free glutathione (GSH), which is an indicator of paracetamol-induced liver injury. These methods can be used as part of a panel of protocols to help predict the hepatoxicity of a drug at an early stage in drug development.
Assuntos
Anormalidades Induzidas por Medicamentos/diagnóstico , Bioensaio/métodos , Doença Hepática Induzida por Substâncias e Drogas/diagnóstico , Embrião não Mamífero/efeitos dos fármacos , Xenopus laevis/embriologia , Anormalidades Induzidas por Medicamentos/genética , Anormalidades Induzidas por Medicamentos/metabolismo , Animais , Doença Hepática Induzida por Substâncias e Drogas/genética , Doença Hepática Induzida por Substâncias e Drogas/metabolismo , Avaliação Pré-Clínica de Medicamentos/métodos , Embrião não Mamífero/metabolismo , Fígado/efeitos dos fármacos , Fígado/embriologia , Fígado/metabolismo , MicroRNAs/genética , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Testes de Toxicidade/métodos , Xenopus laevis/genética , Xenopus laevis/metabolismoRESUMO
Acne vulgaris is the most common skin disease treated by dermatologists. It can be severe and result in permanent scars. Isotretinoin is the most effective treatment for acne and has the potential for long-term clearance. Prescribing and monitoring protocols can vary widely among prescribers. Recent studies, reports, and consensus statements help shed light on optimizing the use of isotretinoin for acne. A recent literature review is summarized in this article to help the practitioner optimize isotretinoin use for acne. The article outlines the advantages and disadvantages of standard, high-dose, and low-dose isotretinoin regimens; discusses the current status of controversies surrounding isotretinoin (including depression/suicide, pregnancy, and inflammatory bowel disease); reviews monitoring recommendations and treatment for hypertriglyceridemia and elevated transaminase levels; and discusses common adverse effects seen with isotretinoin, along with their treatment and prevention.
Assuntos
Acne Vulgar/tratamento farmacológico , Prescrições de Medicamentos/normas , Isotretinoína/administração & dosagem , Guias de Prática Clínica como Assunto , Teratogênicos/toxicidade , Anormalidades Induzidas por Medicamentos/etiologia , Anormalidades Induzidas por Medicamentos/prevenção & controle , Acne Vulgar/psicologia , Ansiedade/induzido quimicamente , Ansiedade/prevenção & controle , Ansiedade/psicologia , Anticoncepção/normas , Depressão/induzido quimicamente , Depressão/prevenção & controle , Depressão/psicologia , Relação Dose-Resposta a Droga , Monitoramento de Medicamentos/normas , Feminino , Humanos , Doenças Inflamatórias Intestinais/induzido quimicamente , Doenças Inflamatórias Intestinais/prevenção & controle , Isotretinoína/efeitos adversos , Isotretinoína/toxicidade , Cooperação do Paciente , Educação de Pacientes como Assunto , Gravidez , Suicídio/psicologia , Cicatrização/efeitos dos fármacosRESUMO
The study is aimed to investigate the protective role of Moringa oleifera extracts against sodium arsenate induced embryo toxicity in albino mice. Forty four pregnant mice were divided into 11groups (A-K). Group A was control while B and C were sodium arsenate treated groups with dose, A (0.00), B (6.00, 0.00), C (12.00, 0.00). Group D to G were of sodium arsenate+Moringa oleifera flower extract treated groups with doses D (6.00, 150.00), E (6.00, 300.00), F (12.00, 150.00), G (12.00, 300.00) and groups H to K were sodium arsenate+Moringa oleifera leaf extract treated groups H (6.00, 150.00), I (6.00, 300.00), J (12.00, 150.00) and K (12.00, 300.00) mg/kg B.W. Moringa oleifera leaf extract treated groups showed significant (p<0.05) amelioration against sodium arsenate induced histopathological changes as malformed heart, spina bifida, enlarged ventricles, poorly developed kidneys, anopthalmia and cavitation in brain. Significant (p<0.05) increased in malondialdehyde 36±0.81 and decreased glutathione 8.25±0.95 values in sodium arsenate treated groups were observed as compared to control 22.5±0.57 and 19±0.81.Whereas Moringa oleifera leaf extract at dose of 300mg/kg B.W normalizesd the malondialdehyde 23±0.81 and glutathione 17.75±3.20 values. So concluded that Moringa oleifera leaf extract has ameliorative effects against sodium arsenate induced embryotoxicity.
Assuntos
Anormalidades Induzidas por Medicamentos/prevenção & controle , Arseniatos/toxicidade , Moringa oleifera , Estresse Oxidativo/efeitos dos fármacos , Extratos Vegetais/farmacologia , Anormalidades Induzidas por Medicamentos/metabolismo , Anormalidades Induzidas por Medicamentos/patologia , Animais , Peso Corporal/efeitos dos fármacos , Feminino , Masculino , Camundongos , Moringa oleifera/química , Folhas de Planta , GravidezRESUMO
OBJECTIVE: Erythrosine (E127), a synthetic food dye containing iodine and sodium, has often been used inside packaged foods and beverages in Turkey and many other countries. We evaluated the effects of erythrosine on neural tube development in early-stage chicken embryos. METHODS: The study included 4 groups, with a total of 80 embryos: a control group, a normal saline group, a half-dose group, and a high-dose group. After 30 hours of incubation, saline and erythrosine solution was injected under the embryonic discs. At the end of 72 hours, the embryos were excised and evaluated macroscopically and histopathologically. RESULTS: Neural tube defects were detected in the erythrosine-administered groups with statistically significant differences. In contrast, the embryos in the control and saline groups displayed normal development. CONCLUSIONS: Erythrosine increased the risk of neural tube defects in early-stage chicken embryos, even at half of the approved dose.
Assuntos
Eritrosina/farmacologia , Corantes Fluorescentes/farmacologia , Defeitos do Tubo Neural/embriologia , Tubo Neural/efeitos dos fármacos , Anormalidades Induzidas por Medicamentos/embriologia , Anormalidades Induzidas por Medicamentos/etiologia , Animais , Embrião de Galinha , Desenvolvimento Embrionário/efeitos dos fármacos , Tubo Neural/embriologia , Defeitos do Tubo Neural/induzido quimicamenteRESUMO
ETHNOPHARMACOLOGICAL RELEVANCE: Anastatica hierochuntica (A. hierochuntica) is a plant consumed in folk medicine for the treatment of reproductive system related problems and metabolic disorders. It is of concern that the herb is commonly consumed by pregnant women towards the end of pregnancy to ease the process of labour, despite the lack of studies evaluating its safety. AIM OF THIS STUDY: This study aimed to investigate the potential toxicity effects of A. hierochuntica in pregnant Sprague-Dawley rats and their developing foetuses. MATERIALS AND METHODS: Experiments were conducted in accordance to the Organisation for Economic Co-operation and Development guideline 414. Animals were randomly divided into four groups (nâ¯=â¯10 females per group): negative control (received the vehicle only), experimental animals received 250, 500, and 1000â¯mg/kg A. hierochuntica aqueous extracts (AHAE), respectively. Treatment was administered daily by oral gavage from gestational day (GD) 6-20, and caesarian section performed on GD21. RESULTS: There were significant reduction in the corrected maternal weight gain of dams and body weight of foetuses in the lowest and highest dose of AHAE-treated animals compared to the control. These findings were associated with the increase in anogenital distance index and multiple congenital anomalies observed in some of the offspring. On the other hand, rats treated with 500â¯mg/kg showed higher embryonic survival rate with absence of significant treatment-related effect. CONCLUSION: Findings showed that highest and lowest doses of AHAE have prenatal toxicity effects in SD rats. Therefore, AHAE is potentially harmful to the developing foetuses especially when consumed during the period of implantation and organogenesis. As for the rats treated with 500â¯mg/kg AHAE, there was no significant treatment-related effect. Hence, we postulate that this finding suggests that the disruption on the hormonal regulation could have been compensated by negative feedback response. The compensated effects of AHAE at 500â¯mg/kg and the presence of lowest observed adverse effect level (LOAEL) at 250â¯mg/kg has resulted in a non-monotonous dose response curve (NMDRC), which complicates the determination of the value of no-observed-adverse effect level (NOAEL).