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1.
Clin Nutr ; 43(3): 739-746, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-38320465

RESUMO

BACKGROUND & AIMS: The consumption of ultra-processed foods (UPF) has been associated with higher all-cause and cardiovascular disease (CVD) mortality, although this association has not been sufficiently investigated in Mediterranean populations. We aimed to evaluate the association between UPF consumption and all-cause, CVD and cancer mortality in an adult population in Spain. METHODS: We analysed data from 1,538 participants aged 20 years and above in the Valencia Nutrition Survey in 1995. Diet was assessed at baseline using a validated food frequency questionnaire and the consumption of UPF was calculated using the NOVA system. Information on socio-demographic characteristics, lifestyles, and presence of diseases was also collected at baseline. Cause of death was ascertained during an 18-year follow-up period. We used Cox regression and competing risk models as proposed by Fine and Gray's to estimate adjusted hazard ratios (HR) and 95 % confidence intervals (95 %CI). RESULTS: After 18 years of follow-up, we documented 312 deaths (36.5 % of CVD and 25.6 % of cancer). Compared with participants in the lowest tertile of UPF consumption, those in the highest tertile showed 40 % higher risk of all-cause mortality, HR 1.40 (95 %CI: 1.04-1.90), and evidence of a higher CVD mortality, HR 1.39 (95 %CI: 0.80-2.41) and of cancer mortality, HR 1.53 (95 %CI: 0.83-2.82). CONCLUSIONS: This study suggests that a high UPF consumption is associated with a higher all-cause mortality in a Mediterranean population after a long follow-up period. Considering the increase in UPF consumption and their detrimental health effects on mortality, these results should be confirmed by other studies in other populations.


Assuntos
Doenças Cardiovasculares , Neoplasias , Adulto , Humanos , Alimento Processado , Dieta , Inquéritos Nutricionais
2.
J Hum Nutr Diet ; 36(5): 1692-1700, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37403249

RESUMO

BACKGROUND: The aim of this study was to find an association between moderate, vigorous and total physical activity (PA); diet quality; and bone mineral density (BMD) among patients suffering from inflammatory bowel disease (IBD). METHODS: We enrolled 54 IBD patients, including those with Crohn's disease (CD) and ulcerative colitis (UC), and 24 healthy adults. All subjects completed the Questionnaire of Eating Behaviour based on which prohealthy and nonhealthy diet indexes were calculated, and the questionnaire included questions from the International Physical Activity Questionnaire. Prohealthy and nonhealthy diet indexes were divided into low-, medium- and high scores. BMD and T- and Z-scores of the lumbar spine (L1-L4) and femoral neck (FN) were assessed using dual-energy X-ray absorptiometry method. RESULTS: BMD, T- and Z-scores of the FN and the Z-score of L1-L4 were significantly lower among patients with CD and UC than healthy controls. We did not find any differences in the time of PA among CD, UC and control groups (CG). The prohealthy diet index was higher among healthy subjects than the CD and UC groups. The nonhealthy diet index was lower among UC patients compared with the CG or CD patients. Prohealthy diet index positively correlated with BMD and T- and Z-scores of L1-L4 and FN in IBD. The prohealthy diet index correlated negatively with C-reactive protein and positively with body mass index. The prohealthy diet index correlated only with total PA in the CD group. CONCLUSION: A well-balanced diet and proper PA may decrease the risk of osteoporosis in IBD, so education of patients referring to nutrition and PA is needed.


Assuntos
Colite Ulcerativa , Doença de Crohn , Doenças Inflamatórias Intestinais , Adulto , Humanos , Densidade Óssea , Doenças Inflamatórias Intestinais/complicações , Colite Ulcerativa/complicações , Doença de Crohn/complicações , Absorciometria de Fóton , Dieta
3.
J Clin Med ; 12(7)2023 Mar 23.
Artigo em Inglês | MEDLINE | ID: mdl-37048534

RESUMO

Obesity is a complex and multifactorial problem of global importance. Additionally, obesity causes chronic inflammation, upregulates cell growth, disturbs the immune system, and causes genomic instability, increasing the risk of carcinogenesis. Colorectal cancer is one of the most common cancers, and it has become a global problem. In 2018, there were around 1.8 million new cases and around 881,000 deaths worldwide. Another risk factor of colorectal cancer associated with obesity is poor diet. A Western diet, including a high intake of red and processed meat and a low consumption of whole grains, fruits, vegetables, and fiber, may increase the risk of both colorectal cancer and obesity. Moreover, the Western diet is associated with a proinflammatory profile diet, which may also affect chronic low-grade inflammation. In fact, people with obesity often present gut dysbiosis, increased inflammation, and risk of colorectal cancer. In this article, the association between obesity and colorectal cancer is discussed, including the most important mechanisms, such as low-grade chronic inflammation, gut dysbiosis, and poor diet.

4.
Biopsychosoc Med ; 17(1): 1, 2023 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-36658586

RESUMO

BACKGROUND: The introduction of BCR-ABL tyrosine kinase inhibitors (TKIs) to chronic myeloid leukemia (CML) therapy has revolutionized the treatment of this disease. Although regular TKI intake is a prerequisite for successful therapy, it has been shown that a significant proportion of patients are non-compliant. Recently there is growing evidence that personality traits may influenced the tendency for non-adherence to treatment in patients with chronic diseases. As far as we know, such a relationship in patients with CML has not been examined, yet. The aim of our study was to determine if personality traits favor non-adherence to treatment recommendations. We investigated the relationship between five-factor model personality factors (conscientiousness, neuroticism, agreeableness, extraversion, and openness) and medication non-adherence. We also checked if the patients with type A and type D personality, were at higher risk of poor medication adherence. METHODS: The following tools were used: self-constructed survey, the NEO-Five Factor Inventory, the Framingham Type A Scale, the D-Scale 14. The study included 140 CML patients treated with imatinib, dasatinib, or nilotinib. RESULTS: 39% of patients reported skipping at least one dose of medication in the month prior to follow-up visit. 51% admitted to skipping such doses from the start of their treatment to the time at which our assessment was performed. We did not find any relationship between the mean values of the analyzed factors of the Big Five (neuroticism, extraversion, openness, agreeableness, conscientiousness) and adherence. However, our analysis revealed that CML patients who admitted to missing doses of drugs during the entire course of treatment demonstrated greater intensity of type A personality traits (p = 0.020). Regarding both factors of type D personality, it was revealed that higher level of negative affectivity significantly decreased the adherence (p = 0.020). CONCLUSION: The results of our study indicate that screening for type D and A personalities may help to identify patients who are at higher risk of poor medication adherence.

5.
Nutrients ; 16(1)2023 Dec 19.
Artigo em Inglês | MEDLINE | ID: mdl-38201836

RESUMO

BACKGROUND: Decreased bone mineral density (BMD) is a common problem among patients with inflammatory bowel disease (IBD). We hypothesised that an insufficient intake of folate might affect BMD. METHODS: The study subjects included 26 with Crohn's disease-CD, 30 with ulcerative colitis-UC, and 31 healthy adults (control group-CG) aged 18-50 years. Participants were asked to follow their usual diet, and dietary intake was assessed by a 4-day, 24 h dietary recall. All the participants filled in a questionnaire referring to folic acid supplementation. The BMD, T-score, and Z-score of the lumbar spine (L1-L4) and femoral neck (FN) were assessed. RESULTS: We found significant differences in the body mass, BMI (body mass index), CRP (C-reactive protein), BMD, Z-score, and T-score of the L1-L4 and FN between groups. There were no differences in energy and folate intake or the percentage coverage of recommended dietary allowances (RDA) of folate in all groups. Moreover, 70% of patients with UC, 92% of patients with CD, and 77% of CG patients showed insufficient folate intake. Folic acid was supplemented with a similar frequency in patients covering and not covering the RDA of folate. The intake of folate per 1000 kcal correlated positively with the CD group's BMD and T-score of L1-L4. CONCLUSIONS: Insufficient folate intake is common in patients with IBD and healthy individuals. The impact of folate on BMD in IBD is not clear. We need more studies on the association between folate intake, folic acid concentration, and BMD in IBD.


Assuntos
Colite Ulcerativa , Doença de Crohn , Doenças Inflamatórias Intestinais , Adulto , Humanos , Ácido Fólico , Densidade Óssea
6.
J Clin Med ; 11(19)2022 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-36233580

RESUMO

The multifaceted activity of vitamin D in patients with inflammatory bowel disease (IBD) presents a challenge for further research in this area. Vitamin D is involved in the regulation of bone mineral metabolism, it participates in the regulation of the immune system, and it is an underlying factor in the pathogenesis of IBD. Additionally, vitamin D affects Th1 and Th2 lymphocytes, influencing the release of cytokines and inhibiting tumor necrosis factor (TNF) expression and the wnt/ß-catenin pathway. As far as IBDs are concerned, they are associated with microbiota dysbiosis, abnormal inflammatory response, and micronutrient deficiency, including vitamin D hypovitaminosis. In turn, the biological activity of active vitamin D is regulated by the vitamin D receptor (VDR) which is associated with several processes related to IBD. Therefore, in terms of research on vitamin D supplementation in IBD patients, it is essential to understand the metabolic pathways and genetic determinants of vitamin D, as well as to identify the environmental factors they are subject to, not only in view of osteoporosis prevention and therapy, but primarily concerning modulating the course and supplementation of IBD pharmacotherapy.

7.
Nutrients ; 14(19)2022 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-36235635

RESUMO

The formation of advanced glycation end-products (AGE) in tissues is a physiological process; however, excessive production and storage are pathological and lead to inflammation. A sedentary lifestyle, hypercaloric and high-fructose diet and increased intake of processed food elements contribute to excessive production of compounds, which are created in the non-enzymatic multi-stage glycation process. The AGE's sources can be endogenous and exogenous, mainly due to processing food at high temperatures and low moisture, including grilling, roasting, and frying. Accumulation of AGE increases oxidative stress and initiates various disorders, leading to the progression of atherosclerosis, cardiovascular disease, diabetes and their complications. Inborn defensive mechanisms, recovery systems, and exogenous antioxidants (including polyphenols) protect from excessive AGE accumulation. Additionally, numerous products have anti-glycation properties, occurring mainly in fruits, vegetables, herbs, and spices. It confirms the role of diet in the prevention of civilization diseases.


Assuntos
Dieta , Produtos Finais de Glicação Avançada , Comportamento Alimentar , Frutose , Verduras
8.
Clin Nutr ; 41(7): 1557-1565, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35667272

RESUMO

Proper dietary habits are a vital element of cardiovascular (CV) treatment, and - according to the current guidelines - a diet rich in antioxidants is generally recommended. It remains, however, inconclusive whether antioxidant nutrients should be supplemented for CV health, and if so, in which form and dosage. Currently available data suggest that vitamin E may be essential in preventing CVD, especially in coronary heart disease and atherosclerosis - nevertheless, vitamin E supplementation may be questionable and may even be associated with adverse outcomes. Further, current studies highlight a strong need for identifying sex-specific strategies, which could improve guidelines for both the prevention and management of cardiovascular disease (CVD). It should also be emphasized that understanding the role of genetic variants in genes involved in VE metabolism may also be crucial for more precise nutritional recommendations for patients suffering from CVD. Therefore, we summarize the current knowledge regarding vitamin E antioxidant properties, which could be essential from CV perspective, and aim to assess whether vitamin E supplementation can be beneficial in CV prevention, especially in the high-risk group of women with obesity.


Assuntos
Antioxidantes , Doenças Cardiovasculares , Doenças Cardiovasculares/prevenção & controle , Suplementos Nutricionais , Feminino , Humanos , Masculino , Obesidade/tratamento farmacológico , Vitamina E/farmacologia , Vitamina E/uso terapêutico
9.
Nutrients ; 14(12)2022 Jun 17.
Artigo em Inglês | MEDLINE | ID: mdl-35745251

RESUMO

Despite the increasing knowledge with regard to IBD (inflammatory bowel disease), including ulcerative colitis (UC) and Crohn's disease (CD), the etiology of these conditions is still not fully understood. Apart from immunological, environmental and nutritional factors, which have already been well documented, it is worthwhile to look at the possible impact of genetic factors, as well as the composition of the microbiota in patients suffering from IBD. New technologies in biochemistry allow to obtain information that can add to the current state of knowledge in IBD etiology.


Assuntos
Colite Ulcerativa , Doença de Crohn , Doenças Inflamatórias Intestinais , Microbiota , Colite Ulcerativa/complicações , Doença de Crohn/etiologia , Dieta Ocidental/efeitos adversos , Humanos , Doenças Inflamatórias Intestinais/complicações
10.
Nutrients ; 13(11)2021 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-34836263

RESUMO

Inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis, is characterized by chronic inflammation of the gastrointestinal tract. IBD has been associated with numerous symptoms and complications, with the most common being iron deficiency anemia (IDA). Iron deficiency in IBD is caused by inadequate intake, malabsorption (including duodenal involvement and surgical removal), and chronic blood loss by mucosal ulcerations. Therefore, an appropriate diet should be enforced. Iron deficiency and iron supplementation have been associated with alterations to gut microbiota. IBD-associated anemia, in particular iron deficiency anemia, is associated with a significant decrease in quality of life and with clinical symptoms such as chronic fatigue, headaches and dizziness, reduced exercise tolerance, pale skin, nails, conjunctiva, and fainting. However, despite these numerous adverse symptoms, IDA remains undertreated. The European Crohn's and Colitis Organisation (ECCO) guidelines state that patients should be monitored for anemia. Adequate treatment, whether oral or intravenous, should be implemented while taking into consideration C-reactive protein values (CRP), hemoglobin levels, and therapeutic response. It should be stressed that every case of anemia in IBD patients should be treated. Intravenous iron formulations, which are more superior compared to the oral form, should be used. There is a need to increase awareness and implementation of international guidelines on iron supplementation in patients with IBD.


Assuntos
Anemia Ferropriva/complicações , Anemia Ferropriva/tratamento farmacológico , Doenças Inflamatórias Intestinais/complicações , Administração Intravenosa , Anemia Ferropriva/sangue , Proteína C-Reativa , Colite Ulcerativa , Doença de Crohn/sangue , Suplementos Nutricionais , Feminino , Homeostase , Humanos , Doenças Inflamatórias Intestinais/tratamento farmacológico , Ferro/sangue , Ferro/metabolismo , Ferro/uso terapêutico , Deficiências de Ferro , Masculino , Qualidade de Vida
11.
J Thorac Dis ; 13(5): 3295-3307, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-34164222

RESUMO

The incidence of brain metastases (BM) is continuing to grow in the elderly population with lung cancer, but these patients are seriously under-represented in clinical trials. Thus, their treatment is not based on the evidence from randomized prospective studies. Age is a well recognized poor prognostic factor for survival in patients with BM from lung cancer, which is reflected in prognostic scales, but its impact on the patients' prognosis reflected by its value in gradually updated grading indices seems to decrease. The reason for poorer outcomes in the elderly is unknown-it may result from the influence of the age per se, simplified staging work-up and suboptimal treatment in this patient subgroup or the excess toxicity of the aggressive anticancer treatment secondary to the impaired physiological regulation mechanisms and comorbidities. The main goal of treatment of BM is to ameliorate neurological symptoms and delay neurological progression, with the focus on the improvement and maintenance of the patients' quality of life. The possible treatment options for BM from lung cancer are whole-brain radiotherapy, stereotactic radiosurgery, surgery, chemotherapy, targeted therapies and best supportive care. The aim of this review is to summarize the problems related to the management of BM in elderly patients with lung cancer, to analyze the value of the above mentioned treatment options, and to provide an insight into the influence of age-related clinical factors on the patients' outcomes.

12.
Nutrients ; 13(6)2021 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-34070791

RESUMO

Reduced physical activity (PA), smoking, and coffee and alcohol drinking constitute risk factors of osteoporosis in patients with inflammatory bowel disease (IBD). The aim of the study was to measure the bone mineral density (BMD) and frequency of osteopenia and osteoporosis in patients with IBD and their correlation with PA, smoking, coffee, and alcohol. The study group consisted of 208 patients with IBD-103 with Crohn's disease (CD), 105 suffering from ulcerative colitis (UC). Densitometric measurements were performed using the DXA. All patients completed a questionnaire concerning PA, smoking, and coffee and alcohol consumption. The prevalence of osteopenia and osteoporosis (L2-L4) in the IBD group was 48.1%; in the CD group, it amounted to 48.6%, and in the UC group, the prevalence was equal to 33.3%. Patients with CD who were diagnosed with osteopenia and osteoporosis demonstrated reduced PA compared to patients with a normal BMD who exercised regularly (p = 0.0335). A similar observation was made in the group of women with IBD. Women with a normal BMD exercised significantly more often than women suffering from osteopenia and osteoporosis (p = 0.0146). However, no differences in BMD were observed with regard to coffee use, alcohol consumption, or smoking. Thus, since the incidence of osteoporosis in IBD patients is high, it may be dependent on PA.


Assuntos
Doenças Ósseas Metabólicas/epidemiologia , Doenças Inflamatórias Intestinais/epidemiologia , Estilo de Vida , Osteoporose/epidemiologia , Absorciometria de Fóton , Adulto , Densidade Óssea , Comorbidade , Feminino , Humanos , Masculino , Polônia/epidemiologia , Fatores de Risco
13.
J Clin Med ; 10(7)2021 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-33916465

RESUMO

Cigarette smoking constitutes one of the most important modifiable factors of osteoporosis, as well as contributes to an early death, tumors, and numerous chronic diseases. The group with an increased risk of a lower bone mineral density are patients suffering from inflammatory bowel diseases. In fact, tobacco smoke, which contains more than 7000 chemical compounds, affects bone mineral density (BMD) both directly and indirectly, as it has an impact on the RANK-RANKL-OPG pathway, intestinal microbiota composition, and calcium-phosphate balance. Constant cigarette use interferes with the production of protective mucus and inhibits the repair processes in the intestinal mucus. Nicotine as well as the other compounds of the cigarette smoke are important risk factors of the inflammatory bowel disease and osteoporosis. Additionally, cigarette smoking may decrease BMD in the IBD patients. Interestingly, it affects patients with Crohn's disease and ulcerative colitis in different ways-on the one hand it protects against ulcerative colitis, whereas on the other it increases the risk of Crohn's disease development. Nevertheless, all patients should be encouraged to cease smoking in order to decrease the risk of developing other disorders.

14.
Nutrients ; 13(2)2021 Feb 04.
Artigo em Inglês | MEDLINE | ID: mdl-33557336

RESUMO

Iodine deficiency is a global issue and affects around 2 billion people worldwide, with pregnant women as a high-risk group. Iodine-deficiency prevention began in the 20th century and started with global salt iodination programmes, which aimed to improve the iodine intake status globally. Although it resulted in the effective eradication of the endemic goitre, it seems that salt iodination did not resolve all the issues. Currently, it is recommended to limit the consumption of salt, which is the main source of iodine, as a preventive measure of non-communicable diseases, such as hypertension or cancer the prevalence of which is increasing. In spite of the fact that there are other sources of iodine, such as fish, seafood, dairy products, water, and vegetables, the high consumption of processed food with a high content of unionised salt, alternative diets or limited salt intake can still lead to iodine deficiency. Thus, iodine deficiency remains a relevant issue, with new, preventive solutions necessary. However, it appears that there is no diet which would fully cover the iodine requirements, and iodine food supplementation is still required.


Assuntos
Dieta/métodos , Iodo/deficiência , Desnutrição/prevenção & controle , Humanos
15.
Nutrients ; 13(2)2021 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-33562891

RESUMO

Osteoporosis is one of the most common extraintestinal complications among patients suffering from inflammatory bowel diseases. The role of vitamin D and calcium in the prevention of a decreased bone mineral density is well known, although other nutrients, including micronutrients, are also of extreme importance. Despite the fact that zinc, copper, selenium, iron, cadmium, silicon and fluorine have not been frequently discussed with regard to the prevention of osteoporosis, it is possible that a deficiency or excess of the abovementioned elements may affect bone mineralization. Additionally, the risk of malnutrition, which is common in patients with ulcerative colitis or Crohn's disease, as well as the composition of gut microbiota, may be associated with micronutrients status.


Assuntos
Densidade Óssea , Microbioma Gastrointestinal , Doenças Inflamatórias Intestinais/complicações , Desnutrição/complicações , Micronutrientes/deficiência , Osteoporose/etiologia , Cádmio/administração & dosagem , Cádmio/efeitos adversos , Cádmio/metabolismo , Cálcio/fisiologia , Colite Ulcerativa/complicações , Cobre/administração & dosagem , Cobre/análise , Cobre/deficiência , Doença de Crohn/complicações , Feminino , Flúor/administração & dosagem , Flúor/efeitos adversos , Flúor/farmacologia , Humanos , Deficiências de Ferro , Sobrecarga de Ferro/complicações , Masculino , Micronutrientes/administração & dosagem , Micronutrientes/sangue , Osteoporose/prevenção & controle , Fatores de Risco , Selênio/administração & dosagem , Selênio/sangue , Selênio/deficiência , Silício/administração & dosagem , Vitamina D/fisiologia , Zinco/administração & dosagem , Zinco/deficiência , Zinco/metabolismo
16.
Nutrients ; 13(1)2021 Jan 13.
Artigo em Inglês | MEDLINE | ID: mdl-33451170

RESUMO

Patients suffering from Crohn's disease and ulcerative colitis are at higher risk of osteoporosis due to lower bone mineral density. Risk factors of osteoporosis are divided into unmodifiable, namely, age, gender, genetic factors, as well as modifiable, including diet, level of physical activity, and the use of stimulants. Coffee and tea contain numerous compounds affecting bone metabolism. Certain substances such as antioxidants may protect bones; other substances may increase bone resorption. Nevertheless, the influence of coffee and tea on the development and course of inflammatory bowel diseases is contradictory.


Assuntos
Osso e Ossos/metabolismo , Café , Ingestão de Líquidos , Doenças Inflamatórias Intestinais/metabolismo , Chá , Animais , Cálcio/metabolismo , Colite Ulcerativa , Doença de Crohn , Suscetibilidade a Doenças , Humanos , Doenças Inflamatórias Intestinais/etiologia , Osteoporose/etiologia , Fosfatos/metabolismo
17.
Nutrients ; 12(8)2020 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-32751086

RESUMO

Recent research studies have shown that vitamin C (ascorbic acid) may affect bone mineral density and that a deficiency of ascorbic acid leads to the development of osteoporosis. Patients suffering from an inflammatory bowel disease are at a risk of low bone mineral density. It is vital to notice that patients with Crohn's disease and ulcerative colitis also are at risk of vitamin C deficiency which is due to factors such as reduced consumption of fresh vegetables and fruits, i.e., the main sources of ascorbic acid. Additionally, some patients follow diets which may provide an insufficient amount of vitamin C. Moreover, serum vitamin C level also is dependent on genetic factors, such as SLC23A1 and SLC23A2 genes, encoding sodium-dependent vitamin C transporters and GSTM1, GSTP1 and GSTT1 genes which encode glutathione S-transferases. Furthermore, ascorbic acid may modify the composition of gut microbiota which plays a role in the pathogenesis of an inflammatory bowel disease.


Assuntos
Deficiência de Ácido Ascórbico/sangue , Ácido Ascórbico/sangue , Doenças Inflamatórias Intestinais/sangue , Osteoporose/etiologia , Deficiência de Ácido Ascórbico/etiologia , Deficiência de Ácido Ascórbico/genética , Densidade Óssea , Colite Ulcerativa/sangue , Colite Ulcerativa/complicações , Colite Ulcerativa/genética , Doença de Crohn/sangue , Doença de Crohn/complicações , Doença de Crohn/genética , Dieta/efeitos adversos , Feminino , Microbioma Gastrointestinal/fisiologia , Glutationa S-Transferase pi/sangue , Glutationa Transferase/sangue , Humanos , Doenças Inflamatórias Intestinais/complicações , Doenças Inflamatórias Intestinais/genética , Masculino , Osteoporose/genética , Fatores de Risco , Transportadores de Sódio Acoplados à Vitamina C/sangue
19.
Med Oncol ; 34(6): 104, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28444623

RESUMO

Failure to comply with treatment recommendations is very common in patients, but still poorly recognised by doctors. The current practice of using oral therapy on a large scale has been increasingly adopted for cancer patients. Chronic myeloid leukaemia (CML) is just such an example, where the introduction of taking new oral medications, the tyrosine kinase BCR-ABL inhibitors (TKI), has now revolutionised the treatment. The aim of our study was to assess treatment adherence in a group of Polish CML patients (a survey was conducted on 140 patient aged ≥18 years) treated with oral TKI (imatinib, dasatinib and nilotinib) taking into account the following variables: gender, age, education, place of residence, family circumstances and duration of therapy. In addition, we evaluated whether there is a relationship between how patients perceive their level of adherence to treatment recommendations with how subjectively the required dosage regimen was followed. Half the patients admitted to skipping at least one drug dose during the entire course of treatment and 39% did so within their last treatment month. Patients were also found to overestimate their own adherence assessment; around 60% of those missing at least 1 drug dose within the last treatment month believed they 'always' followed recommendations. The study demonstrated that adherence deteriorates over time. Furthermore, patients aged >65 years and patients suffering at least one comorbid disease had better adherence (p < 0.011). There were no differences in adherence among patients treated with imatinib, dasatinib and nilotinib (p = 0.249).


Assuntos
Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/epidemiologia , Adesão à Medicação/estatística & dados numéricos , Inibidores de Proteínas Quinases/uso terapêutico , Adulto , Idoso , Antineoplásicos/uso terapêutico , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Proteínas Tirosina Quinases , Inquéritos e Questionários
20.
J Plant Physiol ; 186-187: 25-38, 2015 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-26339750

RESUMO

We examined the functioning of the antioxidative defense system in Arabidopsis thaliana under sulphur (S) deficiency with an emphasis on the role of mitochondria. In tissue extracts and in isolated mitochondria from S-deficient plants, the concentration of non-protein thiols declined but protein thiols did not change. Superoxide anion and hydrogen peroxide were accumulated in leaf blades and the generation of superoxide anion by isolated mitochondria was higher. Lower abundance of reduced (GSH) plus oxidized (GSSG) glutathione in the leaf and root tissues, and leaf mitochondria from S-deficient plants was accompanied by a decrease in the level of GSH and the changes in the GSH/GSSG ratios. In the chloroplasts, the total level of glutathione decreased. Lower levels of reduced (AsA) and oxidized (DHA) ascorbate were reflected in much higher ratios of AsA/DHA. Sulphur deficiency led to an increase in the activity of cytosolic, mitochondrial and chloroplastic antioxidative enzymes, peroxidases, catalases and superoxide dismutases. The protein carbonyl level was higher in the leaves of S-deficient plants and in the chloroplasts, while in the roots, leaf and root mitochondria it remained unchanged. Protease activity in leaf extracts of S-deficient plants was higher, but in root extracts it did not differ. The proteolytic system reflected subcellular specificity. In leaf and root mitochondria the protease activity was higher, whereas in the chloroplasts it did not change. We propose that the preferential incorporation of S to protein thiols and activation of antioxidative and proteolytic systems are likely important for the survival of S-deficient plants and that the mitochondria maintain redox homeostasis.


Assuntos
Antioxidantes/metabolismo , Proteínas de Arabidopsis/metabolismo , Arabidopsis/fisiologia , Mitocôndrias/metabolismo , Ácido Ascórbico/metabolismo , Cloroplastos/metabolismo , Citosol/metabolismo , Glutationa/metabolismo , Estresse Oxidativo , Folhas de Planta/fisiologia , Raízes de Plantas/fisiologia , Carbonilação Proteica , Proteólise , Espécies Reativas de Oxigênio/metabolismo , Compostos de Sulfidrila/metabolismo , Enxofre/deficiência , Superóxido Dismutase/metabolismo
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