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1.
Toxics ; 11(8)2023 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-37624158

RESUMO

Unconventional (alternative, natural) medicine in Poland and worldwide includes hundreds of non-scientifically verified "treatment" modalities. Among the most popular are biological therapies using chemical or natural compounds administered with injection or drip infusion. The latter has found the most excellent use in treating rheumatological and dermatological diseases and certain types of cancer. Vitamin infusions, curcumin, glutathione, perhydrol and dimethylsulphoxide (DMSO) have gained popularity among clients of natural medicine clinics. The present study aims to analyse the case of a 37-year-old woman who was administered infusions containing perhydrol and DMSO (0.5 mL 0.04% hydrogen peroxide/0.5 mL p.d.a DMSO in saline) due to a MTHFR A1298C mutation. After having the next infusion, the woman complained of nausea and then became unconscious. Subsequently, she suffered respiratory and cardiac arrest. Adequate resuscitation was undertaken. After being taken to the hospital, the patient was in critical condition and died due to increasing multiple-organ failure. Initially, there was suspected DMSO poisoning as it was the only compound to have been administered as an intravenous infusion. However, it was not until the analysis of the secured evidence that it became clear that the patient had also been given an intravenous solution of hydrogen peroxide, H2O2, and that there had been a mistake in preparing the intravenous perhydrol solution. The autopsy concluded that the immediate cause of death was an acute cardiopulmonary failure due to the toxic effects of intravenously administered hydrogen peroxide. This conclusion was established after the toxicological testing of the evidence and biological material secured during the patient's treatment and autopsy. Products containing DMSO and perhydrol are not included in the lists of medicinal/therapeutical forms and preparations and thus are not authorised for marketing in Poland. In the case of perhydrol, apart from the topical use of diluted preparations for washing and cleansing wounds, no data on therapeutic use exist in the available scientific literature. Furthermore, "DMSO and perhydrol therapy" cannot even be considered a placebo effect, as both are toxic compounds which could, at most, cause poisoning symptoms rather than improve health.

2.
J Clin Med ; 11(2)2022 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-35054157

RESUMO

BACKGROUND: We aimed to assess a liposomal fat-soluble vitamin formulation containing vitamin K2 with standard treatment in cystic fibrosis (CF). METHODS: A multi-center randomized controlled trial was carried out in 100 pancreatic-insufficient patients with CF. The liposomal formulation contained vitamin A as retinyl palmitate (2667 IU daily) and beta-carotene (1333 IU), D3 (4000 IU), E (150 IU), K1 (2 mg), and K2 as menaquinone-7 (400 µg). It was compared with the standard vitamin preparations in the closest possible doses (2500 IU, 1428 IU, 4000 IU, 150 IU, 2.14 mg, respectively; no vitamin K2) over 3 months. RESULTS: Forty-two patients finished the trial in the liposomal and 49 in the control group (overall 91 pts: 22.6 ± 7.6 years, 62.6% female, BMI 19.9 ± 2.8 kg/m2, FEV1% 70% ± 30%). The main outcome was the change of vitamin status in the serum during the study (liposomal vs. standard): all-trans-retinol (+1.48 ± 95.9 vs. -43.1 ± 121.4 ng/mL, p = 0.054), 25-hydroxyvitamin D3 (+9.7 ± 13.4 vs. +2.0 ± 9.8 ng/mL, p = 0.004), α-tocopherol (+1.5 ± 2.5 vs. -0.2 ± 1.6 µg/mL, p < 0.001), %undercarboxylated osteocalcin (-17.2 ± 24.8% vs. -8.3 ± 18.5%, p = 0.061). The secondary outcome was the vitamin status at the trial end: all-trans-retinol (370.0 ± 116.5 vs. 323.1 ± 100.6 ng/mL, p = 0.045), 25-hydroxyvitamin D3 (43.2 ± 16.6 vs. 32.7 ± 11.5 ng/mL, p < 0.001), α-tocopherol (9.0 ± 3.1 vs. 7.7 ± 3.0 µg/mL, p = 0.037), %undercarboxylated osteocalcin (13.0 ± 11.2% vs. 22.7 ± 22.0%, p = 0.008). CONCLUSION: The liposomal fat-soluble vitamin supplement containing vitamin K2 was superior to the standard form in delivering vitamin D3 and E in pancreatic-insufficient patients with CF. The supplement was also more effective in strengthening vitamin K-dependent carboxylation, and could improve vitamin A status.

3.
Hum Exp Toxicol ; 41: 9603271211061502, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35023765

RESUMO

Ethylene glycol (EG), in addition to its neurotoxic and nephrotoxic effects, evokes oxidative stress. The aim of this study was to assess the influence of the ethylene glycol on the biochemical indicators and oxidoreductive balance of patients treated for acute poisoning. The total study group consisted of 56 persons including 26 alcoholics who took EG as a substitute for ethyl alcohol in the course of alcohol dependence syndrome and 30 controls. Severity of poisoning, results of acid-base parameters, biochemical, and toxicological tests as well as biomarkers of the oxidative stress in blood were analyzed during the patients' hospitalization. The key issue was to assess the oxidative stress and biochemical disturbances caused by EG and the type of treatment applied in the course of poisoning. Significant changes in some parameters were found both at time of diagnosis and after treatment initiation (ethanol as an antidote and hemodialysis). The most important differences included the activity of hepatic parameters (aspartate aminotransferase, AST) and oxidative stress markers like catalase (CAT); correlation of the lipid peroxidation products level (TBARS) with urea concentration has been shown. On the last day of the hospitalization, in some cases, the mutual correlation between the evaluated markers were observed, for example, between alanine transaminase (ALT) and glutathione reductase (GR), and urea concentration and glutathione level (GSH/GSSG). The concentration of ions (H+) had a major impact on the oxidoreductive balance, correlating with the elevated GR and GSH/GSSG levels.


Assuntos
Alcoolismo/complicações , Alcoolismo/fisiopatologia , Etanol/intoxicação , Etilenoglicóis/intoxicação , Fomepizol/uso terapêutico , Síndromes Neurotóxicas/tratamento farmacológico , Síndromes Neurotóxicas/fisiopatologia , Adulto , Antídotos/uso terapêutico , Biomarcadores/sangue , Etanol/sangue , Etilenoglicóis/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Síndromes Neurotóxicas/etiologia , Estresse Oxidativo/efeitos dos fármacos
4.
Nutrients ; 13(12)2021 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-34960106

RESUMO

Fat-soluble vitamin deficiency remains a challenge in cystic fibrosis (CF), chronic pancreatitis, and biliary atresia. Liposomes and cyclodextrins can enhance their bioavailability, thus this multi-center randomized placebo-controlled trial compared three-month supplementation of fat-soluble vitamins in the form of liposomes or cyclodextrins to medium-chain triglycerides (MCT) in pancreatic-insufficient CF patients. The daily doses were as follows: 2000 IU of retinyl palmitate, 4000 IU of vitamin D3, 200 IU of RRR-α-tocopherol, and 200 µg of vitamin K2 as menaquinone-7, with vitamin E given in soybean oil instead of liposomes. All participants received 4 mg of ß-carotene and 1.07 mg of vitamin K1 to ensure compliance with the guidelines. The primary outcome was the change from the baseline of all-trans-retinol and 25-hydroxyvitamin D3 concentrations and the percentage of undercarboxylated osteocalcin. Out of 75 randomized patients (n = 28 liposomes, n = 22 cyclodextrins, and n = 25 MCT), 67 completed the trial (89%; n = 26 liposomes, n = 18 cyclodextrins, and n = 23 MCT) and had a median age of 22 years (IQR 19-28), body mass index of 20.6 kg/m2 [18.4-22.0], and forced expiratory volume in 1 s of 65% (44-84%). The liposomal formulation of vitamin A was associated with the improved evolution of serum all-trans-retinol compared to the control (median +1.7 ng/mL (IQR -44.3-86.1) vs. -38.8 ng/mL (-71.2-6.8), p = 0.028). Cyclodextrins enhanced the bioavailability of vitamin D3 (+9.0 ng/mL (1.0-17.0) vs. +3.0 ng/mL (-4.0-7.0), p = 0.012) and vitamin E (+4.34 µg/mL (0.33-6.52) vs. -0.34 µg/mL (-1.71-2.15), p = 0.010). Liposomes may augment the bioavailability of vitamin A and cyclodextrins may strengthen the supplementation of vitamins D3 and E relative to MCT in pancreatic-insufficient CF but further studies are required to assess liposomal vitamin E (German Clinical Trial Register number DRKS00014295, funded from EU and Norsa Pharma).


Assuntos
Ciclodextrinas/química , Fibrose Cística/dietoterapia , Lipossomos/química , Triglicerídeos/química , Vitaminas/administração & dosagem , Adolescente , Adulto , Calcifediol/sangue , Colecalciferol/administração & dosagem , Colecalciferol/sangue , Suplementos Nutricionais , Insuficiência Pancreática Exócrina/dietoterapia , Feminino , Humanos , Masculino , Resultado do Tratamento , Vitamina A/administração & dosagem , Vitamina A/sangue , Vitamina D/administração & dosagem , Vitamina D/sangue , Vitamina E/administração & dosagem , Vitamina E/sangue , Vitamina K 2/administração & dosagem , Vitamina K 2/análogos & derivados , Vitaminas/sangue , Vitaminas/química , Adulto Jovem , beta Caroteno/administração & dosagem
5.
Environ Toxicol Pharmacol ; 56: 290-296, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29091817

RESUMO

Toxic effects of ethylene glycol (EG) and its metabolites are mainly related to metabolic acidosis and kidney damage. EG biotransformation involving CYP2E1 affects the oxidant-antioxidant balance. The study assessed the effect of repeated administration of 4-methylpyrazole (4MP, 15mg/kg b.w. after 2h, followed by 10mg/kg b.w. every 12h) on renal function (creatinine, urea and urinary protein levels) as well as products of kidney's lipid peroxidation (MDA and TBARS levels) in rats poisoned with EG (5745mg/kg b.w.). Serum EG and glycolic acid (GA) concentrations were measured throughout the experiment. Repeated administration of 4MP reduced the rate of EG elimination, extended the period of EG persistence in serum and significantly limited formation of GA. The study showed the temporary intensification of kidney oxidative processes that correlated with changes in kidney function. It was found that the use of 4MP in EG poisoning inhibited its biotransformation to toxic metabolites, but simultaneously intensified oxidative damages in kidneys.


Assuntos
Antídotos/administração & dosagem , Etilenoglicol/intoxicação , Nefropatias/metabolismo , Rim/efeitos dos fármacos , Peroxidação de Lipídeos/efeitos dos fármacos , Pirazóis/administração & dosagem , Animais , Antídotos/efeitos adversos , Biotransformação , Citocromo P-450 CYP2E1/metabolismo , Relação Dose-Resposta a Droga , Esquema de Medicação , Fomepizol , Rim/metabolismo , Rim/fisiopatologia , Nefropatias/induzido quimicamente , Nefropatias/tratamento farmacológico , Testes de Função Renal , Masculino , Pirazóis/efeitos adversos , Ratos , Ratos Wistar
6.
Forensic Sci Int ; 262: e15-20, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27020616

RESUMO

The increasing availability of e-cigarettes is a potential toxicological concern. E-cigarettes appeared on the Polish market in 2006, and since 2009 they have been widely available with a new source of nicotine, the so-called e-liquid. In this paper two cases of suicidal oral and intravenous poisonings with the e-liquid are described. The clinical courses of these poisonings are presented. Nicotine and cotinine concentrations in the patient's blood were determined using high performance liquid chromatography with diode array detection. In the course of intoxication patient No. 1, classic symptoms of acute nicotine poisoning without convulsions were observed. Nicotine and cotinine concentrations measured in serum were 0.096 and 4.4mg/L, respectively. The case of patient No. 2, admission with no typical symptoms of nicotine poisoning was identified, except unconsciousness and slow respiration. Nicotine and cotinine concentrations in the serum at the time of No. 2 admissions were determined to be 0.8 and 1.3mg/L, respectively. With the increasing number of e-liquid poisonings cases, it should be aware that these products can be a readily available source of poison.


Assuntos
Cotinina/sangue , Estimulantes Ganglionares/administração & dosagem , Nicotina/administração & dosagem , Nicotina/sangue , Tentativa de Suicídio , Administração Oral , Adulto , Cromatografia Líquida de Alta Pressão , Sistemas Eletrônicos de Liberação de Nicotina , Feminino , Estimulantes Ganglionares/sangue , Estimulantes Ganglionares/intoxicação , Humanos , Injeções Intravenosas , Masculino , Nicotina/intoxicação , Adulto Jovem
7.
Int J Occup Med Environ Health ; 26(5): 802-12, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24249093

RESUMO

OBJECTIVES: The aim of the study was to evaluate the influence of acetylsalicylic acid (ASA) on benzene hematotoxicity in rats. MATERIALS AND METHODS: The study was carried out on rats exposed for 2, 4 and 8 weeks to benzene vapour at a concentration of 1.5 or 4.5 mmol/m(3) of air (5 days per week, 6 hours per day) alone or together with ASA at the doses of 5, 150 or 300 mg/kg body weight (per os). RESULTS: Benzene at a concentration of 4.5 mmol/m(3) caused a slight lymphopenia, granulocytosis and reticulocytosis in blood. In bone marrow traits of megaloblastic renewal, presence of undifferentiated cells and giant forms of granulocytes as well as an increase in myeloperoxidase and decrease in chloroacetate esterase activity and lipids content were noted. ASA (150 and 300 mg/kg b.w.) influenced some of hematological parameters, altered by benzene intoxication. ASA limited the solvent-induced alteration in blood reticulocyte count and in the case of bone marrow in the erythroblasts count. Traits of megaloblastic renewal in bone marrow were less pronounced. Besides, higher activity of myeloperoxidase and the decrease in the level of lipids in granulocytes were noted. CONCLUSION: Our results suggest that ASA limited the benzene-induced hematotoxicity.


Assuntos
Aspirina/farmacologia , Benzeno/toxicidade , Células da Medula Óssea/efeitos dos fármacos , Inibidores de Ciclo-Oxigenase/farmacologia , Doenças Hematológicas/sangue , Doenças Hematológicas/induzido quimicamente , Exposição por Inalação/efeitos adversos , Animais , Hidrolases de Éster Carboxílico/metabolismo , Doenças Hematológicas/enzimologia , Masculino , Peroxidase/metabolismo , Ratos , Ratos Wistar , Contagem de Reticulócitos
8.
Przegl Lek ; 69(8): 435-8, 2012.
Artigo em Polonês | MEDLINE | ID: mdl-23243902

RESUMO

Ethylene glycol (EG) is a multidirectional, dihydric alcohol, which is widely used in food, chemical and automotive industries. EG is a compound of similar toxicity to ethanol (EA). The EG biotransformation undergoes, mainly to glycolaldehyde and acids: glycolic, glyoxylic and oxalic acid, such metabolites, which exhibit strong narcotic effect on the central nervous system, causing profound metabolic acidosis and lead to severe nephropathy. Due to the wide availability of products containing ethylene glycol and its potential toxicity, in the case of the alcohol poisoning, the significant role in the diagnosis play: medical interview, observation of characteristic clinical symptoms, basic laboratory tests and detection of ethylene glycol in the biological material that confirm EG poisoning.


Assuntos
Overdose de Drogas/diagnóstico , Etilenoglicol/análise , Etilenoglicol/intoxicação , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
9.
Pharmacol Rep ; 64(6): 1547-53, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23406765

RESUMO

BACKGROUND: The aim of the conducted studies was to evaluate the effect of 4-methylpyrazole, increasingly used in detoxifying treatments after ethylene glycol poisoning, on the activity of some antioxidant enzymes and lipid peroxidation formation in the liver of rats after experimental co-exposure to ethylene glycol and ethyl alcohol. METHODS: The trials were conducted on adult male Wistar rats. Ethylene glycol (EG) at the dose of 3.83 g/kg bw and ethyl alcohol (EA) at the dose of 1 g/kg bw were administered po, and 4-methylpyrazole (4-MP) at the dose of 0.01 g/kg bw was administered ip. Parameters of antioxidant balance were evaluated in hepatic cytosol, including the activity of the following enzymes: glutathione S-transferase (GST), glutathione reductase (GR), glutathione peroxidase (GPx) and lipid peroxidation level (TBARS). RESULTS: The results suggest that evaluation of the effects of administrated 4-MP after co-exposure to EG and EA in the liver revealed statistically significant changes on antioxidant enzyme system and malondialdehyde formation. CONCLUSION: The changes in biomarkers activity indicate a greater production of free radicals which exceeds the capability of antioxidant system, appearing with oxidative stress in the group of animals treated by 4-MP combined with EG and EA.


Assuntos
Antioxidantes/farmacologia , Enzimas/metabolismo , Etanol/toxicidade , Etilenoglicol/toxicidade , Peroxidação de Lipídeos/efeitos dos fármacos , Fígado/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Pirazóis/farmacologia , Administração Oral , Animais , Antioxidantes/administração & dosagem , Etanol/administração & dosagem , Etilenoglicol/administração & dosagem , Fomepizol , Glutationa Peroxidase/metabolismo , Glutationa Redutase/metabolismo , Glutationa Transferase/metabolismo , Injeções Intraperitoneais , Fígado/enzimologia , Masculino , Malondialdeído/metabolismo , Pirazóis/administração & dosagem , Ratos , Ratos Wistar , Espécies Reativas de Oxigênio/metabolismo , Substâncias Reativas com Ácido Tiobarbitúrico/metabolismo , Fatores de Tempo
10.
Toxicology ; 188(2-3): 161-70, 2003 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-12767688

RESUMO

The aim of the study was to evaluate cytochrome P-450 dependent hepatic monooxygenases system and urinary excretions of phenol and muconic acid in animals subjected to acetylsalicylic acid (ASA) orally and benzene by inhalations. ASA increased urinary excretion of muconic acid although it did not affect the urinary level of phenol. Benzene decreased concentrations of P-450 and b(5) cytochromes and the activities of NADPH-cytochrome P-450 and NADH-cytochrome b(5) reductases. In rats exposed to ASA and benzene simultaneously the concentration of both cytochromes and the activity of the cytochrome dependent reductases was higher than in the rats exposed only to benzene and sometimes exceeded the control group values.


Assuntos
Anti-Inflamatórios não Esteroides/metabolismo , Aspirina/metabolismo , Benzeno/metabolismo , Sistema Enzimático do Citocromo P-450/metabolismo , Ácido Sórbico/análogos & derivados , Administração por Inalação , Animais , Anti-Inflamatórios não Esteroides/toxicidade , Aspirina/toxicidade , Benzeno/administração & dosagem , Benzeno/toxicidade , Redutases do Citocromo , Citocromo-B(5) Redutase , Citocromos b5/metabolismo , Interações Medicamentosas , Masculino , NADPH-Ferri-Hemoproteína Redutase/metabolismo , Fenol/urina , Ratos , Ratos Wistar , Ácido Sórbico/metabolismo , Estatísticas não Paramétricas
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