Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 47.494
Filtrar
1.
J Dermatolog Treat ; 35(1): 2350760, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38714323

RESUMO

PURPOSE: Tildrakizumab is a selective inhibitor of IL-23 approved for the treatment of moderate-to-severe plaque psoriasis in two dosages. We conducted a 16-week multicenter retrospective study to compare the effectiveness and safety of tildrakizumab 200 mg versus tildrakizumab 100 mg in patients with a high disease burden or high body weight. MATERIALS AND METHODS: Our retrospective study included 134 patients treated with tildrakizumab 200 mg and 364 patients treated with tildrakizumab 100 mg from 28 Italian Dermatology Units affected by moderate-to-severe plaque psoriasis. The patients had a body weight above 90 kg or a high disease burden (Psoriasis Area and Severity Index [PASI] ≥ 16 or the involvement of difficult-to-treat areas). We evaluated the effectiveness of tildrakizumab at the week-16 visit in terms of PASI90, PASI100 and absolute PASI ≤ 2. RESULTS: After 16 weeks of treatment with tildrakizumab 200 mg, PASI90 was reached by 57.5% of patients and PASI100 by 39.6% of patients. At the same time point, 34.3% and 24.2% of patients treated with tildrakizumab 100 mg achieved PASI90 and PASI100, respectively. CONCLUSIONS: Our data suggest that tildrakizumab 200 mg has better effectiveness than tildrakizumab 100 mg in patients with a body weight ≥ 90 kg and a high disease burden.


Assuntos
Anticorpos Monoclonais Humanizados , Peso Corporal , Psoríase , Índice de Gravidade de Doença , Humanos , Psoríase/tratamento farmacológico , Psoríase/patologia , Estudos Retrospectivos , Masculino , Feminino , Anticorpos Monoclonais Humanizados/administração & dosagem , Pessoa de Meia-Idade , Adulto , Resultado do Tratamento , Peso Corporal/efeitos dos fármacos , Itália , Fármacos Dermatológicos/administração & dosagem , Fármacos Dermatológicos/uso terapêutico , Relação Dose-Resposta a Droga , Idoso
2.
Eur Rev Med Pharmacol Sci ; 28(8): 3275-3286, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38708486

RESUMO

OBJECTIVE: This study aimed to compare two routes of administration and different dosages of streptozotocin (STZ) for the pharmacological induction of gestational diabetes mellitus (GDM) in pregnant CD1 females. MATERIALS AND METHODS: 35 female CD1 mice were divided into 5 groups (n = 7). Diabetes mellitus (DM) was induced with STZ by two routes and two doses: 1) Control Group without administration of STZ (CL), 2) Intraperitoneal Group with 200 mg of STZ/Kg of weight (IP200), 3) Intraperitoneal Group with 230 mg of STZ/Kg of weight (IP230), 4) Subcutaneous Group with 200 mg of STZ/Kg of weight (SC200) and 5) Subcutaneous Group with 230 mg of STZ/Kg of weight (SC230). Body weight, food and water intake, glycemia, Homeostatic Model Assessment of Insulin Resistance Index (HOMA-IR), survival, and birth rate were identified. RESULTS: The SC230 group turned out to be the most effective dose and route for the induction of GDM in pregnant females. This scheme managed to reproduce sustained hyperglycemia with high HOMA-IR, the presence of polyphagia, polydipsia, and weight loss. In addition, the birth rate and survival were high compared to the other doses and routes of administration. CONCLUSIONS: The administration of a single dose of 230 mg/kg of weight by subcutaneous route supposes advantages compared to previously used models since it decreases the physiological stress due to manipulation and the costs since it does not require repeated doses or adjuvants such as high lipid diets to potentiate the diabetogenic effect of STZ. Graphical Abstract: https://www.europeanreview.org/wp/wp-content/uploads/Graphical-abstract-12.jpg.


Assuntos
Diabetes Mellitus Experimental , Diabetes Gestacional , Estreptozocina , Animais , Feminino , Gravidez , Camundongos , Diabetes Mellitus Experimental/induzido quimicamente , Estreptozocina/administração & dosagem , Injeções Subcutâneas , Glicemia/metabolismo , Glicemia/efeitos dos fármacos , Relação Dose-Resposta a Droga , Injeções Intraperitoneais , Resistência à Insulina , Peso Corporal/efeitos dos fármacos
3.
Sci Rep ; 14(1): 10647, 2024 05 09.
Artigo em Inglês | MEDLINE | ID: mdl-38724510

RESUMO

This study aimed to evaluate the safety of Moringa by comparing the effects of different gavage doses of Moringa. The general behavior, body weight, food intake, blood indexes, serum biochemical indexes, and histopathology of rats were used to determine the safety threshold and to provide a reference for the further development and use of Moringa as animal feed. 40 Sprague Dawley rats were selected and given transoral gavage for 28 consecutive days. The T1, T2 and T3 groups were observed for general behavior, body weight, and food intake. Blood and serum biochemical indices were quantified, and histopathology was performed to evaluate the effect and safety of Moringa. The results of the toxicological test showed that (1) Only T1 groups experienced diarrhea. (2) The body weight and food intake of rats in each group were normal compared with the control group. (3) The hematological and serum biochemical indices of rats in the T1 group were significantly different from those of CK but were in the normal range; (4) The results of microscopic examination of the heart, liver, spleen, lung, and kidney of rats in each group were normal, but inflammation occurred in stomach and jejunum of rats in the T1 group, but not in the ileum. The gastrointestinal tract of rats in the T2 and T3 groups were normal. (5) No abnormal death occurred in any of the treatment groups.The results of this study revealed that gavage of Moringa homogenate at a dose of 6 g/kg BW can cause diarrhea in rats. Although there is no pathological effect on weight, food intake, blood and serum biochemical indicators in rats, there are pathological textures in the gastrointestinal tissue caused by diarrhea. Therefore, the safety threshold of Moringa homogenate should be ≤ 3 g/kg BW.


Assuntos
Peso Corporal , Moringa oleifera , Ratos Sprague-Dawley , Animais , Moringa oleifera/química , Ratos , Masculino , Peso Corporal/efeitos dos fármacos , Ingestão de Alimentos/efeitos dos fármacos , Feminino , Ração Animal/análise , Diarreia/induzido quimicamente , Diarreia/veterinária
4.
Ann Intern Med ; 177(5): JC55, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38710089

RESUMO

SOURCE CITATION: Yao H, Zhang A, Li D, et al. Comparative effectiveness of GLP-1 receptor agonists on glycaemic control, body weight, and lipid profile for type 2 diabetes: systematic review and network meta-analysis. BMJ. 2024;384:e076410. 38286487.


Assuntos
Diabetes Mellitus Tipo 2 , Receptor do Peptídeo Semelhante ao Glucagon 1 , Hipoglicemiantes , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/sangue , Humanos , Receptor do Peptídeo Semelhante ao Glucagon 1/agonistas , Hipoglicemiantes/uso terapêutico , Hipoglicemiantes/efeitos adversos , Peso Corporal/efeitos dos fármacos , Glicemia/metabolismo , Glicemia/efeitos dos fármacos
5.
Front Endocrinol (Lausanne) ; 15: 1387964, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38742193

RESUMO

The high prevalence of obesity has become a pressing global public health problem and there exists a strong association between increased BMI and mortality at a BMI of 25 kg/m2 or higher. The prevalence of obesity is higher among middle-aged adults than among younger groups and the combination of aging and obesity exacerbate systemic inflammation. Increased inflammatory cytokines such as interleukin 6 and tumor necrosis factor alpha (TNFα) are hallmarks of obesity, and promote the secretion of hepatic C-reactive protein (CRP) which further induces systematic inflammation. The neuropeptide oxytocin has been shown to have anti-obesity and anti-inflammation effects, and also suppress sweet-tasting carbohydrate consumption in mammals. Previously, we have shown that the Japanese herbal medicine Kamikihito (KKT), which is used to treat neuropsychological stress disorders in Japan, functions as an oxytocin receptors agonist. In the present study, we further investigated the effect of KKT on body weight (BW), food intake, inflammation, and sweet preferences in middle-aged obese mice. KKT oral administration for 12 days decreased the expression of pro-inflammatory cytokines in the liver, and the plasma CRP and TNFα levels in obese mice. The effect of KKT administration was found to be different between male and female mice. In the absence of sucrose, KKT administration decreased food intake only in male mice. However, while having access to a 30% sucrose solution, both BW and food intake was decreased by KKT administration in male and female mice; but sucrose intake was decreased in female mice alone. In addition, KKT administration decreased sucrose intake in oxytocin deficient lean mice, but not in the WT lean mice. The present study demonstrates that KKT ameliorates chronic inflammation, which is strongly associated with aging and obesity, and decreases food intake in male mice as well as sucrose intake in female mice; in an oxytocin receptor dependent manner.


Assuntos
Dieta Hiperlipídica , Medicamentos de Ervas Chinesas , Inflamação , Camundongos Endogâmicos C57BL , Obesidade , Animais , Obesidade/metabolismo , Obesidade/tratamento farmacológico , Masculino , Camundongos , Dieta Hiperlipídica/efeitos adversos , Inflamação/metabolismo , Feminino , Medicamentos de Ervas Chinesas/farmacologia , Medicamentos de Ervas Chinesas/uso terapêutico , Sacarose/administração & dosagem , Preferências Alimentares/efeitos dos fármacos , Peso Corporal/efeitos dos fármacos , Ocitocina/farmacologia , Medicina Kampo , População do Leste Asiático
6.
Acta Cir Bras ; 39: e391024, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38656061

RESUMO

PURPOSE: Osteoporosis is a bone disease which commonly occurred in postmenopausal women. Almost 10 percent of world population and approximately 30% of women (postmenopausal) suffer from this disease. Alternative medicine has great success in the treatment of osteoporosis disease. Bryodulcosigenin, a potent phytoconstituent, already displayed the anti-inflammatory and antioxidant effect. In this study, we made effort to analyze the antiosteoporosis effect of bryodulcosigenin against ovariectomy (OVX) induced osteoporosis in rats. METHODS: Swiss albino Wistar rats were grouped into fIve groups and given an oral dose of bryodulcosigenin (10, 20 and 30 mg/kg) for eight weeks. Body weight, uterus, bone mineral density, cytokines, hormones parameters, transforming growth factor (TGF)-ß, insulin-like growth factor (IGF), osteoprotegerin (OPG), receptor activator of nuclear factor kappa-Β ligand (RANKL), and its ratio were estimated. RESULTS: Bryodulcosigenin significantly (p < 0.001) suppressed the body weight and enhanced the uterine weight and significantly (p < 0.001) increased the bone mineral density in whole femur, caput femoris, distal femur and proximal femur. Bryodulcosigenin significantly (P < 0.001) altered the level of biochemical parameters at dose dependent manner, significantly (P < 0.001) improved the level of estrogen and suppressed the level of follicle stimulating hormone and luteinizing hormone. Bryodulcosigenin significantly (P < 0.001) improved the level of OPG and suppressed the level of RANKL. CONCLUSIONS: Bryodulcosigenin reduced the cytokines level and suppressed the TGF-ß and IGF. We concluded that bryodulcosigenin is an antiosteoporosis medication based on the findings.


Assuntos
Densidade Óssea , Osteoporose , Ovariectomia , Ratos Wistar , Animais , Feminino , Densidade Óssea/efeitos dos fármacos , Osteoporose/tratamento farmacológico , Osteoporose/prevenção & controle , Osteoporose/etiologia , Ratos , Peso Corporal/efeitos dos fármacos , Modelos Animais de Doenças , Útero/efeitos dos fármacos , Citocinas/sangue , Citocinas/efeitos dos fármacos , Fêmur/efeitos dos fármacos , Resultado do Tratamento
7.
Biomolecules ; 14(4)2024 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-38672490

RESUMO

Vitamin D (vit D) and fish oil (FO) both offer unique health benefits, however, their combined effects have not been evaluated in obesity and nonalcoholic fatty liver disease (NAFLD). Hence, we hypothesized that vit D and FO supplementation would have additive effects in reducing obesity-associated inflammation and NAFLD. Male C57BL6 mice were split into four groups and fed a high fat (HF) diet supplemented with a low (HF; +200 IU vit D) or high dose of vitamin D (HF + D; +1000 IU vit D); combination of vit D and FO (HF-FO; +1000 IU vit D); or only FO (HF-FO; +200 IU vit D) for 12 weeks. We measured body weight, food intake, glucose tolerance, and harvested epididymal fat pad and liver for gene expression analyses. Adiposity was reduced in groups supplemented with both FO and vit D. Glucose clearance was higher in FO-supplemented groups compared to mice fed HF. In adipose tissue, markers of fatty acid synthesis and oxidation were comparable in groups that received vit D and FO individually in comparison to HF. However, the vit D and FO group had significantly lower fatty acid synthesis and higher oxidation compared to the other groups. Vit D and FO also significantly improved fatty acid oxidation, despite similar fatty acid synthesis among the four groups in liver. Even though we did not find additive effects of vit D and FO, our data provide evidence that FO reduces markers of obesity in the presence of adequate levels of vit D.


Assuntos
Dieta Hiperlipídica , Óleos de Peixe , Camundongos Endogâmicos C57BL , Obesidade , Vitamina D , Animais , Masculino , Óleos de Peixe/farmacologia , Óleos de Peixe/administração & dosagem , Vitamina D/farmacologia , Vitamina D/administração & dosagem , Vitamina D/metabolismo , Obesidade/metabolismo , Camundongos , Dieta Hiperlipídica/efeitos adversos , Suplementos Nutricionais , Fígado/metabolismo , Fígado/efeitos dos fármacos , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/etiologia , Camundongos Obesos , Tecido Adiposo/metabolismo , Tecido Adiposo/efeitos dos fármacos , Peso Corporal/efeitos dos fármacos
8.
Behav Brain Res ; 466: 115001, 2024 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-38642861

RESUMO

INTRODUCTION: Anorexia Nervosa (AN) is a psycho-socio-biological disease characterized by severe weight loss as result of dieting and hyperactivity. Effective treatments are scarce, despite its significant prevalence and mortality. AN patients show lower basal insulin levels and increased metabolic clearance, leading to weight loss, cognitive deficits, and hormonal imbalances. Low-dose polymer insulin could potentially reverse these effects by restoring brain function, reducing fear of weight gain, encouraging food intake, and restoring fat depots. This study evaluates an insulin delivery system designed for sustained release and AN treatment. METHODS: AN-like model was established through dietary restriction (DR). On days 1-25, mice were on DR, and on days 26-31 they were on ad libitum regimen. An insulin-loaded delivery system was administered subcutaneously (1% w/w insulin). The impact of insulin treatment on gene expression in the hippocampus (cognition, regulation of stress, neurogenesis) and hypothalamus (eating behavior, mood) was assessed. Behavioral assays were conducted to evaluate motor activity and cognitive function. RESULTS: The delivery system demonstrated sustained insulin release, maintaining therapeutic plasma levels. Diet restriction mice treated with the insulin delivery system showed body weight restoration. Gene expression analysis revealed enhanced expression of CB1 and CB2 genes associated with improved eating behavior and cognition, while POMC expression was reduced. Insulin-polymer treatment restored cognitive function and decreased hyperactivity in the AN-like model. CONCLUSION: The PSA-RA-based insulin delivery system effectively restores metabolic balance, body weight, and cognitive function in the AN model. Its ability to steadily release insulin makes it a promising candidate for AN treatment."


Assuntos
Anorexia Nervosa , Peso Corporal , Modelos Animais de Doenças , Insulina , Animais , Insulina/administração & dosagem , Insulina/farmacologia , Camundongos , Anorexia Nervosa/tratamento farmacológico , Anorexia Nervosa/metabolismo , Peso Corporal/efeitos dos fármacos , Cognição/efeitos dos fármacos , Hipocampo/metabolismo , Hipocampo/efeitos dos fármacos , Feminino , Hipotálamo/metabolismo , Hipotálamo/efeitos dos fármacos , Camundongos Endogâmicos C57BL
9.
Cell Mol Biol (Noisy-le-grand) ; 70(4): 53-60, 2024 Apr 28.
Artigo em Inglês | MEDLINE | ID: mdl-38678627

RESUMO

Cobalt protoporphyrin (CoPP) is a synthetic heme analog that has been observed to reduce food intake and promote sustained weight loss. While the precise mechanisms responsible for these effects remain elusive, earlier research has hinted at the potential involvement of nitric oxide synthase in the hypothalamus. This study aimed to delve into CoPP's impact on the activities of crucial antioxidant enzymes: superoxide dismutase (SOD), catalase, glutathione peroxidase (GPx), glutathione reductase (GR), and glutathione-S-transferase (GST) across seven distinct brain regions (hippocampus, hypothalamus, prefrontal cortex, motor cortex, striatum, midbrain, and cerebellum), as well as in the liver and kidneys. Female Wistar rats weighing 180 to 200 grams received a single subcutaneous dose of 25 µmol/kg CoPP. After six days, brain tissue was extracted to assess the activities of antioxidant enzymes and quantify malondialdehyde levels. Our findings confirm that CoPP administration triggers the characteristic effects of decreased food intake and reduced body weight. Moreover, it led to an increase in SOD activity in the hypothalamus, a pivotal brain region associated with food intake regulation. Notably, CoPP-treated rats exhibited elevated enzymatic activity of catalase, GR, and GST in the motor cortex without concurrent signs of heightened oxidative stress. These results underscore a strong connection between the antioxidant system and food intake regulation. They also emphasize the need for further investigation into the roles of antioxidant enzymes in modulating food intake and the ensuing weight loss, using CoPP as a valuable research tool.


Assuntos
Antioxidantes , Hipotálamo , Córtex Motor , Protoporfirinas , Ratos Wistar , Superóxido Dismutase , Animais , Feminino , Hipotálamo/metabolismo , Hipotálamo/efeitos dos fármacos , Hipotálamo/enzimologia , Antioxidantes/metabolismo , Protoporfirinas/farmacologia , Córtex Motor/efeitos dos fármacos , Córtex Motor/metabolismo , Córtex Motor/enzimologia , Superóxido Dismutase/metabolismo , Catalase/metabolismo , Ratos , Estresse Oxidativo/efeitos dos fármacos , Glutationa Peroxidase/metabolismo , Ingestão de Alimentos/efeitos dos fármacos , Glutationa Transferase/metabolismo , Peso Corporal/efeitos dos fármacos , Glutationa Redutase/metabolismo , Malondialdeído/metabolismo
10.
Food Chem Toxicol ; 188: 114630, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38604577

RESUMO

In this study, we conducted a systematic assessment of the effectsof deoxynivalenol (DON) and T-2 mycotoxins (T-2) on the developmental processes and structural integrity of murine femurs, considering both the isolated and synergistic effects of these toxins. To this end, we divided 72 male mice into nine groups, each subjected to varying dosages of T-2, DON, or their combinations. Over a four-week experimental period, meticulous monitoring was undertaken regarding the mice's body weight, biochemical markers of bone formation and resorption, and the activity of relevant cells. To comprehensively evaluate alterations in bone structure, we employed biomechanical analysis, micro-computed tomography (micro-CT), and transmission electron microscopy.Our findings unveiled a significant revelation: the mice exhibited a dose-dependent decrease in body weight upon exposure to individual mycotoxins, while the combined use of these toxins manifested an atypical antagonistic effect. Furthermore, we observed variations in the levels of calcium, phosphorus, and vitamin D, as well as adjustments in the activities of osteoblasts and osteoclasts, all intricately linked to the dosage and ratio of the toxins. Alterations in biomechanical properties were also noted to correlate with the dosage and combination of toxins. Analyses via micro-CT and transmission electron microscopy further corroborated the substantial impact of toxin dosage and combinations on both cortical and trabecular bone structures.In summation, our research unequivocally demonstrates the dose- and ratio-dependent detrimental effects of DON and T-2 mycotoxins on the growth and structural integrity of murine femurs. These insights accentuate the importance of a profound understanding of the potential risks these toxins pose to bone health, offering pivotal guidance for future toxicological research and public health preventative strategies.


Assuntos
Fêmur , Toxina T-2 , Tricotecenos , Microtomografia por Raio-X , Animais , Tricotecenos/toxicidade , Masculino , Fêmur/efeitos dos fármacos , Camundongos , Toxina T-2/toxicidade , Osteoblastos/efeitos dos fármacos , Osteogênese/efeitos dos fármacos , Osteoclastos/efeitos dos fármacos , Peso Corporal/efeitos dos fármacos
11.
In Vivo ; 38(3): 1152-1161, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38688615

RESUMO

BACKGROUND/AIM: The global prevalence of type 2 diabetes (T2D) continues to increase, necessitating the need for understanding the causes of its development. The widespread use of high-fructose corn syrup (HFCS) in drinks and diets is suspected to play a role in metabolic disorders. Although many studies have reported on the effects of excessive HFCS and excessive energy intakes in middle-aged individuals, few have focused on energy restriction. This study aimed to investigate the effects of excessive HFCS drink intake under energy restriction on developing T2D in early middle-aged mice. MATERIALS AND METHODS: Early middle-aged mice were divided in HFCS and control groups; they were provided either 10% HFCS water or deionized water ad libitum for 12 weeks, respectively. Total energy intake was controlled using a standard rodent diet. Oral glucose tolerance test (OGTT), insulin tolerance test (ITT), tissue weight measurements, serum parameter analyses, and mRNA expression assessments were performed. RESULTS: No increase in body and adipose tissue weight was observed with excessive HFCS intake under energy restriction. Moreover, serum lipid parameters did not differ from those of controls. However, in the OGTT and ITT, the HFCS group showed higher blood glucose levels than the control group. Moreover, the pancreatic weight and insulin II mRNA expression were reduced. CONCLUSION: The excessive HFCS drink intake under energy restriction did not induce obesity; however, it induced impaired glucose tolerance, indicating its negative effects on the pancreas in early middle-aged mice. When translated in human physiology, our results show that even if one does not become obese, excessive HFCS may affect the overall metabolic mechanism; these effects may vary depending on age.


Assuntos
Glicemia , Teste de Tolerância a Glucose , Xarope de Milho Rico em Frutose , Animais , Xarope de Milho Rico em Frutose/efeitos adversos , Xarope de Milho Rico em Frutose/administração & dosagem , Camundongos , Masculino , Diabetes Mellitus Tipo 2/induzido quimicamente , Diabetes Mellitus Tipo 2/etiologia , Diabetes Mellitus Tipo 2/metabolismo , Ingestão de Energia , Modelos Animais de Doenças , Insulina/sangue , Peso Corporal/efeitos dos fármacos , Resistência à Insulina , Obesidade/etiologia , Obesidade/metabolismo , Obesidade/induzido quimicamente
12.
Physiol Behav ; 280: 114548, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38615729

RESUMO

Corn and soybean oils are among the most frequently used vehicles for water-insoluble compounds in toxicological studies. These two vegetable oils are nutrients and may induce some biological effects on animals that might interfere with the experimental results. However, their chronic effects on a developing brain have not been reported. This study aims to evaluate the neurobehavioral and brain biochemical effects of both oils on male and female Swiss albino mice. Pregnant female mice were exposed to 1 µl/g/d of either tap water, corn oil (CO), or soybean oil (SO) from early gestation (GD1) until weaning then offspring mice were exposed to the same treatment regimen until adulthood (PND70). Our results showed that developmental exposure to both oils induced body weight changes in offspring mice. In addition, we detected some behavioral abnormalities where both oil-treated groups showed a significant decrease in locomotor activity and greater levels of anxiety behavior. Moreover, our results suggest that continuous exposure to these oils may alter motor coordination, spatial memory and induce depression-like behavior in adult mice. These alterations were accompanied by increased malondialdehyde, superoxide dismutase, and glutathione peroxidase activities in specific brain regions. Together, these data suggest that exposure to CO and SO as vehicles in developmental studies may interfere with the behavioral response and brain redox homeostasis in offspring mice.


Assuntos
Encéfalo , Óleo de Milho , Estresse Oxidativo , Efeitos Tardios da Exposição Pré-Natal , Óleo de Soja , Animais , Feminino , Óleo de Milho/administração & dosagem , Estresse Oxidativo/efeitos dos fármacos , Camundongos , Gravidez , Masculino , Efeitos Tardios da Exposição Pré-Natal/induzido quimicamente , Encéfalo/efeitos dos fármacos , Encéfalo/metabolismo , Encéfalo/crescimento & desenvolvimento , Glutationa Peroxidase/metabolismo , Peso Corporal/efeitos dos fármacos , Malondialdeído/metabolismo , Superóxido Dismutase/metabolismo , Atividade Motora/efeitos dos fármacos , Comportamento Animal/efeitos dos fármacos , Ansiedade/induzido quimicamente , Aprendizagem em Labirinto/efeitos dos fármacos , Veículos Farmacêuticos
13.
J Vet Intern Med ; 38(3): 1686-1692, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38563346

RESUMO

BACKGROUND: Traditional dosing of chemotherapy drugs based on body surface area may overdose small dogs, leading to an increased frequency of adverse events (AEs). HYPOTHESIS/OBJECTIVES: Evaluate the frequency of hematologic and gastrointestinal AEs in dogs with newly diagnosed lymphoma treated with vincristine weighing ≤15 kg in comparison to dogs weighing >15 kg. We hypothesized that dogs weighing ≤15 kg would experience a higher frequency of AEs. ANIMALS: One hundred and thirty-eight dogs with newly diagnosed lymphoma were treated with vincristine. METHODS: A multicenter retrospective study reviewing hematologic data and medical record information. Complete blood counts were performed no more than 24 hours before vincristine administration and then between 4 and 8 days post-administration. Data were evaluated using logistic regression or ordinal logistic regression. RESULTS: Thirty-eight dogs weighing ≤15 kg and 100 dogs weighing >15 kg were included. The median vincristine dose for both groups was 0.6 mg/m2. Seventeen (12.3%) instances of neutropenia occurred with no significant difference in overall frequency or grade between groups. Thirty initially asymptomatic substage A dogs (29.4%) experienced gastrointestinal AEs. Because of the widespread use of gastrointestinal supportive care medications, statistical comparison between groups could not be performed. Seven instances of hospitalization occurred (5.0%) and the risk of hospitalization did not differ significantly between groups (P = .37). CONCLUSIONS AND CLINICAL IMPORTANCE: Vincristine dosed at ≤0.6 mg/m2 does not increase the risk of hematologic AEs in dogs weighing ≤15 kg.


Assuntos
Antineoplásicos Fitogênicos , Peso Corporal , Doenças do Cão , Linfoma , Vincristina , Animais , Cães , Doenças do Cão/induzido quimicamente , Doenças do Cão/tratamento farmacológico , Vincristina/efeitos adversos , Vincristina/uso terapêutico , Vincristina/administração & dosagem , Linfoma/veterinária , Linfoma/tratamento farmacológico , Estudos Retrospectivos , Masculino , Feminino , Peso Corporal/efeitos dos fármacos , Antineoplásicos Fitogênicos/efeitos adversos , Antineoplásicos Fitogênicos/uso terapêutico , Neutropenia/induzido quimicamente , Neutropenia/veterinária
14.
Diabetes Care ; 47(6): 1056-1064, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38639997

RESUMO

OBJECTIVE: We evaluated baseline characteristics of participants with early-onset type 2 diabetes (T2D) from the SURPASS program and tirzepatide's effects on glycemic control, body weight (BW), and cardiometabolic markers. RESEARCH DESIGN AND METHODS: This post hoc analysis compared baseline characteristics and changes in mean HbA1c, BW, waist circumference (WC), lipids, and blood pressure (BP) in 3,792 participants with early-onset versus later-onset T2D at week 40 (A Study of Tirzepatide [LY3298176] in Participants With Type 2 Diabetes Not Controlled With Diet and Exercise Alone [SURPASS-1] and A Study of Tirzepatide [LY3298176] Versus Semaglutide Once Weekly as Add-on Therapy to Metformin in Participants With Type 2 Diabetes [SURPASS-2]) or week 52 (A Study of Tirzepatide [LY3298176] Versus Insulin Degludec in Participants With Type 2 Diabetes [SURPASS-3]). Analyses were performed by study on data from participants while on assigned treatment without rescue medication in case of persistent hyperglycemia. RESULTS: At baseline in SURPASS-2, participants with early-onset versus later-onset T2D were younger with longer diabetes duration (9 vs. 7 years, P < 0.001) higher glycemic levels (8.5% vs. 8.2%, P < 0.001), higher BW (97 vs. 93 kg, P < 0.001) and BMI (35 vs. 34 kg/m2, P < 0.001), and a similarly abnormal lipid profile (e.g., triglycerides 167 vs. 156 mg/dL). At week 40, similar improvements in HbA1c (-2.6% vs. -2.4%), BW (-14 vs. -13 kg), WC (-10 vs. -10 cm), triglycerides (-26% vs. -24%), HDL (7% vs. 7%), and systolic BP (-6 vs. -7 mmHg) were observed in both subgroups with tirzepatide. CONCLUSIONS: Despite younger age, participants with early-onset T2D from the SURPASS program had higher glycemic levels and worse overall metabolic health at baseline versus those with later-onset T2D. In this post hoc analysis, similar improvements in HbA1c, BW, and cardiometabolic markers were observed with tirzepatide, irrespective of age at T2D diagnosis. Future studies are needed to determine long-term outcomes of tirzepatide in early-onset T2D.


Assuntos
Diabetes Mellitus Tipo 2 , Hipoglicemiantes , Humanos , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/sangue , Masculino , Feminino , Pessoa de Meia-Idade , Hipoglicemiantes/uso terapêutico , Adulto , Hemoglobinas Glicadas/metabolismo , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Pressão Sanguínea/efeitos dos fármacos , Peso Corporal/efeitos dos fármacos , Receptor do Peptídeo Semelhante ao Glucagon 2 , Polipeptídeo Inibidor Gástrico
15.
Int J Mol Sci ; 25(8)2024 Apr 20.
Artigo em Inglês | MEDLINE | ID: mdl-38674096

RESUMO

Major depressive disorder is a severe mood disorder associated with a marked decrease in quality of life and social functioning, accompanied by a risk of suicidal behavior. Therefore, seeking out and adhering to effective treatment is of great personal and society-wide importance. Weight changes associated with antidepressant therapy are often cited as the reason for treatment withdrawal and thus are an important topic of interest. There indeed exists a significant mechanistic overlap between depression, antidepressant treatment, and the regulation of appetite and body weight. The suggested pathomechanisms include the abnormal functioning of the homeostatic (mostly humoral) and hedonic (mostly dopaminergic) circuits of appetite regulation, as well as causing neuromorphological and neurophysiological changes underlying the development of depressive disorder. However, this issue is still extensively discussed. This review aims to summarize mechanisms linked to depression and antidepressant therapy in the context of weight change.


Assuntos
Antidepressivos , Peso Corporal , Humanos , Antidepressivos/uso terapêutico , Antidepressivos/farmacologia , Peso Corporal/efeitos dos fármacos , Transtorno Depressivo Maior/tratamento farmacológico , Depressão/tratamento farmacológico , Animais
16.
Food Chem Toxicol ; 188: 114653, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38599274

RESUMO

Sunset Yellow (SY), an azo synthetic food dye, is widely used in the food industry. Although there are different opinions on its effect on people, its use is regulated in the European Union. If the Acceptable Daily Intake of 2.5 mg/kg/bw is exceeded, it may have pathological and biochemical effects on organs. There are not enough studies on the effects of SY on growth and development in mammals. This study was conducted to determine the effect of SY on the morphological parameters of mice at different ages (four, eight, and ten weeks old). The treatment and control groups were created with Swiss Albino mice (n: 6). SY was administered orally for 28 days (30 mg/kg/bw/week). On the last day of the study, the mice were weighed, and tail, temporal region, femur, and crown-rubmp-length values were measured using a digital caliper. A statistical difference in average body weight was observed in the SY groups (p < 0.05). SY administration during childhood caused retardation in growth and development parameters. Therefore, SY may cause weight gain and affect morphological parameters. Additional studies are required to investigate the effects of SY at different doses and durations.


Assuntos
Compostos Azo , Animais , Camundongos , Masculino , Peso Corporal/efeitos dos fármacos , Corantes de Alimentos
17.
Microb Pathog ; 190: 106605, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38428470

RESUMO

The objective of the present study was to evaluate the impacts of trichothecenes (Fusarium sporotrichioides) for dairy calves on animal growth, oxidative and inflammatory responses in the presence or absence of essential oils. Twelve calves weaned at 70 days of age were divided into 2 groups: T-C (control) and T-EO (essential oils - oregano, thyme, basil and rosemary) in the period of 40 days consuming ration contaminated by trichothecenes (500 ppb). The animals in the T-EO group received a mixture of EOs via feed at a dosage of 0.75 mL per/kg of feed. Blood collections were performed on days 1, 20 and 40 for hematological and biochemical analyses; the fecal score was performed every 2 days on a scale of 1-5 and clinical examinations were performed 3 times during the experiment period. The animals were weighed at the beginning and at the end of the experiment; euthanasia of two calves per group for macroscopic and microscopic evaluation of several tissues (spleen, liver, duodenum, jejunum, ilium, cecum and colon) was performed at the end of the experiment. The calves in the T-EO group had a tendency (P = 0.07) of higher body weight when compared to the T-C. Treatment effect and treatment vs day interaction was detected for leukocytes and granulocytes variables, demonstrating a higher count of these cells in the T-EO group on both days (20 and 40), and the same behavior occurred for the distribution amplitude of erythrocytes (RDW). The enzymes alanine transferase (ALT), aspartate transferase (AST) and gamma glutamyl-transferase (GGT) showed higher serum activity in the T-C group (days 20 and 40). The levels of thiobarbituric acid reactive substances (TBARS) were lower in the serum of animals in the T-EO group. For calves in the T-EO group, glutathione S-transferase activity was higher in serum. Haptoglobulin and C-reactive protein levels were lower on days 20 and 40 in T-EO animals when compared to the T-C group. In the macroscopic and microscopic evaluations, which were collected at the end of the experiment after slaughtering the animals, liver and intestine did not show changes for the animals in the T-EO group, unlike the animals in the T-C group, which had moderately firm diffuse consistency of the liver and edema in the mesentery, as well as oxidative stress in tissues (liver, duodenum, jejunum, ileum, cecum and colon). The results concluded that the consumption of a mixture of EOs (essential oils - oregano, thyme, basil and rosemary) minimized the negative effects caused by trichothecenes in dairy calves, thus being an alternative to improving the immunological and antioxidant condition, as well as a possible adsorbent alternative.


Assuntos
Ração Animal , Fezes , Óleos Voláteis , Estresse Oxidativo , Tricotecenos , Animais , Bovinos , Estresse Oxidativo/efeitos dos fármacos , Óleos Voláteis/farmacologia , Inflamação/metabolismo , Doenças dos Bovinos/metabolismo , Doenças dos Bovinos/tratamento farmacológico , Peso Corporal/efeitos dos fármacos , Fígado/patologia , Fígado/metabolismo , Fígado/efeitos dos fármacos
18.
Peptides ; 176: 171197, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38493922

RESUMO

Amylin, a pancreatic hormone, is well-established to suppress feeding by enhancing satiation. Pramlintide, an amylin analog that is FDA-approved for the treatment of diabetes, has also been shown to produce hypophagia. However, the behavioral mechanisms underlying the ability of pramlintide to suppress feeding are unresolved. We hypothesized that systemic pramlintide administration in rats would reduce energy intake, specifically by reducing meal size. Male rats were given b.i.d. administration of intraperitoneal pramlintide or vehicle for 1 week, and chow intake, meal patterns, and body weight were monitored throughout the test period. Consistent with our hypothesis, pramlintide decreased chow intake mainly via suppression of meal size, with corresponding reductions in meal duration on several days. Fewer effects on meal number or feeding rate were detected. Pramlintide also reduced weight gain over the 1-week study. These results highlight that the behavioral mechanisms by which pramlintide produces hypophagia are similar to those driven by amylin itself, and provide important insight into the ability of this pharmacotherapy to promote negative energy balance over a period of chronic administration.


Assuntos
Comportamento Alimentar , Polipeptídeo Amiloide das Ilhotas Pancreáticas , Animais , Polipeptídeo Amiloide das Ilhotas Pancreáticas/farmacologia , Masculino , Ratos , Comportamento Alimentar/efeitos dos fármacos , Ingestão de Alimentos/efeitos dos fármacos , Ratos Sprague-Dawley , Peso Corporal/efeitos dos fármacos , Ingestão de Energia/efeitos dos fármacos
19.
Int J Biol Macromol ; 266(Pt 1): 131121, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38522692

RESUMO

In our aging society, dysphagia and malnutrition are growing concerns, necessitating intervention. Liquid nutrition support offers a practical solution for traditional dietary issues, but it raises a key issue: the potential for post-meal glucose spikes impacting efficacy. This study examined the effects of supplementation of Polygonatum cyrtonema Hua polysaccharide (PCP), konjac glucomannan (KGM) and their combination on acute phase postprandial glycemic response and long-term glucose metabolism in T2DM mice on a complete nutritional liquid diet. KGM was more effective in reducing postprandial glucose response, while PCP was more prominent in ameliorating long-term glucose metabolism. The KGM-PCP combination demonstrated superior outcomes in fasting blood glucose, insulin, and glucose homeostasis. PCP and KGM also influenced the composition and abundance of the gut microbiome, with the H-PCP group showing optimal performance. Moreover, the KGM-PCP combination improved body weight, lipid homeostasis, and liver health the most. PCP potentially regulates glycemia through metabolic pathways, while KGM improves glycemic metabolism by reducing postprandial glucose levels in response to viscous intestinal contents. This research identifies the structure, viscosity properties, and hypoglycemic effects of KGM and PCP in complete nutritional liquid diet fed T2DM mice, enabling their strategic utilization as hypoglycemic components in nutritional administration and glycemic regulation.


Assuntos
Glicemia , Diabetes Mellitus Tipo 2 , Hipoglicemiantes , Mananas , Polygonatum , Polissacarídeos , Animais , Mananas/farmacologia , Mananas/química , Camundongos , Polissacarídeos/farmacologia , Polissacarídeos/química , Polissacarídeos/administração & dosagem , Glicemia/metabolismo , Polygonatum/química , Diabetes Mellitus Tipo 2/dietoterapia , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Hipoglicemiantes/farmacologia , Hipoglicemiantes/química , Masculino , Microbioma Gastrointestinal/efeitos dos fármacos , Insulina/sangue , Insulina/metabolismo , Peso Corporal/efeitos dos fármacos , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/dietoterapia
20.
Diabetes Obes Metab ; 26(6): 2390-2400, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38477183

RESUMO

AIM: To investigate the real-world utilization and comparative clinical outcomes of injectable and oral semaglutide in individuals with type 2 diabetes (T2D) with the aim of enhancing understanding of the practical implications associated with choosing between these formulations. METHODS: New users of oral or injectable semaglutide were selected from a cohort of 14 079 initiators of glucagon-like peptide-1 receptor agonists. Propensity-score matching (PSM) was employed to create balanced groups, ensuring comparability. The analysis encompassed dose exposure, drug persistence, and clinical outcomes, including changes in glycated haemoglobin (HbA1c) and body weight, with up to 18 months' follow-up. RESULTS: We analysed two matched groups of 107 participants each, who comprised on average 63.6% men, aged 64 years, with diabetes duration of approximately 10 years, body mass index of 29 kg/m2 and HbA1c level of 7.7-7.8% (61-62 mmol/mol). The proportion of low, intermediate and high doses were similar with the oral and the injectable formulation. The change in HbA1c was similar between groups (-0.9% / -10 mmol/mol at 18 months) as was the proportion of individuals reaching HbA1c <6.5% (48 mmol/mol). The average change in body weight was similar in the two groups (-3.7 kg with injectable and -3.3 kg with oral at 18 months) but more new users of injectable semaglutide lost ≥5% body weight. Persistence on drug was longer with injectable than with oral semaglutide. CONCLUSION: In a real-world setting, improvements in HbA1c and body weight were similar after initiation of oral or injectable semaglutide. These results may be specific to the features of the matched cohorts under investigation, with limited generalizability to populations with different characteristics.


Assuntos
Diabetes Mellitus Tipo 2 , Peptídeos Semelhantes ao Glucagon , Hemoglobinas Glicadas , Hipoglicemiantes , Humanos , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/sangue , Peptídeos Semelhantes ao Glucagon/administração & dosagem , Peptídeos Semelhantes ao Glucagon/uso terapêutico , Masculino , Pessoa de Meia-Idade , Feminino , Administração Oral , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/uso terapêutico , Idoso , Hemoglobinas Glicadas/análise , Hemoglobinas Glicadas/efeitos dos fármacos , Estudos de Coortes , Peso Corporal/efeitos dos fármacos , Resultado do Tratamento , Injeções , Receptor do Peptídeo Semelhante ao Glucagon 1/agonistas
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA