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1.
N Engl J Med ; 388(10): 898-912, 2023 Mar 09.
Artigo em Inglês | MEDLINE | ID: mdl-36884323

RESUMO

BACKGROUND: Desmoid tumors are rare, locally aggressive, highly recurrent soft-tissue tumors without approved treatments. METHODS: We conducted a phase 3, international, double-blind, randomized, placebo-controlled trial of nirogacestat in adults with progressing desmoid tumors according to the Response Evaluation Criteria in Solid Tumors, version 1.1. Patients were assigned in a 1:1 ratio to receive the oral γ-secretase inhibitor nirogacestat (150 mg) or placebo twice daily. The primary end point was progression-free survival. RESULTS: From May 2019 through August 2020, a total of 70 patients were assigned to receive nirogacestat and 72 to receive placebo. Nirogacestat had a significant progression-free survival benefit over placebo (hazard ratio for disease progression or death, 0.29; 95% confidence interval, 0.15 to 0.55; P<0.001); the likelihood of being event-free at 2 years was 76% with nirogacestat and 44% with placebo. Between-group differences in progression-free survival were consistent across prespecified subgroups. The percentage of patients who had an objective response was significantly higher with nirogacestat than with placebo (41% vs. 8%; P<0.001), with a median time to response of 5.6 months and 11.1 months, respectively; the percentage of patients with a complete response was 7% and 0%, respectively. Significant between-group differences in secondary patient-reported outcomes, including pain, symptom burden, physical or role functioning, and health-related quality of life, were observed (P≤0.01). Frequent adverse events with nirogacestat included diarrhea (in 84% of the patients), nausea (in 54%), fatigue (in 51%), hypophosphatemia (in 42%), and maculopapular rash (in 32%); 95% of adverse events were of grade 1 or 2. Among women of childbearing potential receiving nirogacestat, 27 of 36 (75%) had adverse events consistent with ovarian dysfunction, which resolved in 20 women (74%). CONCLUSIONS: Nirogacestat was associated with significant benefits with respect to progression-free survival, objective response, pain, symptom burden, physical functioning, role functioning, and health-related quality of life in adults with progressing desmoid tumors. Adverse events with nirogacestat were frequent but mostly low grade. (Funded by SpringWorks Therapeutics; DeFi ClinicalTrials.gov number, NCT03785964.).


Assuntos
Antineoplásicos , Fibromatose Agressiva , Inibidores e Moduladores de Secretases gama , Tetra-Hidronaftalenos , Adulto , Feminino , Humanos , Secretases da Proteína Precursora do Amiloide/uso terapêutico , Antineoplásicos/uso terapêutico , Método Duplo-Cego , Fibromatose Agressiva/tratamento farmacológico , Inibidores e Moduladores de Secretases gama/uso terapêutico , Intervalo Livre de Progressão , Qualidade de Vida , Tetra-Hidronaftalenos/uso terapêutico , Valina/análogos & derivados
2.
Int J Mol Sci ; 24(9)2023 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-37175536

RESUMO

Opioids are substances derived from opium (natural opioids). In its raw state, opium is a gummy latex extracted from Papaver somniferum. The use of opioids and their negative health consequences among people who use drugs have been studied. Today, opioids are still the most commonly used and effective analgesic treatments for severe pain, but their use and abuse causes detrimental side effects for health, including addiction, thus impacting the user's quality of life and causing overdose. The mesocorticolimbic dopaminergic circuitry represents the brain circuit mediating both natural rewards and the rewarding aspects of nearly all drugs of abuse, including opioids. Hence, understanding how opioids affect the function of dopaminergic circuitry may be useful for better knowledge of the process and to develop effective therapeutic strategies in addiction. The aim of this review was to summarize the main features of opioids and opioid receptors and focus on the molecular and upcoming epigenetic mechanisms leading to opioid addiction. Since synthetic opioids can be effective for pain management, their ability to induce addiction in athletes, with the risk of incurring doping, is also discussed.


Assuntos
Analgésicos Opioides , Transtornos Relacionados ao Uso de Opioides , Humanos , Analgésicos Opioides/efeitos adversos , Manejo da Dor/efeitos adversos , Receptores Opioides/genética , Ópio , Qualidade de Vida , Transtornos Relacionados ao Uso de Opioides/tratamento farmacológico , Transtornos Relacionados ao Uso de Opioides/genética
3.
Cancer ; 126(11): 2637-2647, 2020 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-32129883

RESUMO

BACKGROUND: The optimal treatment for advanced leiomyosarcoma is still debated. Given histotype-specific prospective controlled data lacking, this study retrospectively evaluated doxorubicin plus dacarbazine, doxorubicin plus ifosfamide, and doxorubicin alone as first-line treatments for advanced/metastatic leiomyosarcoma treated at European Organization for Research and Treatment of Cancer Soft Tissue and Bone Sarcoma Group (EORTC-STBSG) sites. METHODS: The inclusion criteria were a confirmed histological diagnosis, treatment between January 2010 and December 2015, measurable disease (Response Evaluation Criteria in Solid Tumors 1.1), an Eastern Cooperative Oncology Group performance status ≤2, and an age ≥ 18 years. The endpoints were progression-free survival (PFS), overall survival (OS), and overall response rate (ORR). PFS was analyzed with methods for interval-censored data. Patients were matched according to their propensity scores, which were estimated with a logistic regression model accounting for histology, grade, age, sex, performance status, tumor site, and tumor extent. RESULTS: Three hundred three patients from 18 EORTC-STBSG sites were identified. One hundred seventeen (39%) received doxorubicin plus dacarbazine, 71 (23%) received doxorubicin plus ifosfamide, and 115 (38%) received doxorubicin. In the 2:1:2 propensity score-matched population (205 patients), the estimated median PFS was 9.2 months (95% confidence interval [CI], 5.2-9.7 months), 8.2 months (95% CI, 5.2-10.1 months), and 4.8 months (95% CI, 2.3-6.0 months) with ORRs of 30.9%, 19.5%, and 25.6% for doxorubicin plus dacarbazine, doxorubicin plus ifosfamide, and doxorubicin alone, respectively. PFS was significantly longer with doxorubicin plus dacarbazine versus doxorubicin (hazard ratio [HR], 0.72; 95% CI, 0.52-0.99). Doxorubicin plus dacarbazine was associated with longer OS (median, 36.8 months; 95% CI, 27.9-47.2 months) in comparison with both doxorubicin plus ifosfamide (median, 21.9 months; 95% CI, 16.7-33.4 months; HR, 0.65; 95% CI, 0.40-1.06) and doxorubicin (median, 30.3 months; 95% CI, 21.0-36.3 months; HR, 0.66; 95% CI, 0.43-0.99). Adjusted analyses retained an effect for PFS but not for OS. None of the factors selected for multivariate analysis had a significant interaction with the received treatment for both PFS and OS. CONCLUSIONS: This is the largest retrospective study of first-line treatment for advanced leiomyosarcoma. In the propensity score-matched population, doxorubicin and dacarbazine showed favorable activity in terms of both ORR and PFS and warrants further evaluation in prospective trials.


Assuntos
Neoplasias Ósseas/tratamento farmacológico , Leiomiossarcoma/tratamento farmacológico , Pontuação de Propensão , Sarcoma/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias Ósseas/mortalidade , Dacarbazina/administração & dosagem , Doxorrubicina/administração & dosagem , Feminino , Humanos , Ifosfamida/administração & dosagem , Leiomiossarcoma/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Sarcoma/mortalidade
4.
Ann Diagn Pathol ; 49: 151634, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32987254

RESUMO

A combination of Sox10 and GATA3 was previously identified as a marker for metastatic triple-negative breast cancer (TNBC), but it is uncertain whether their expression is associated with pathological complete response (pCR) after neoadjuvant chemotherapy (NAC). This study investigates the predictive value of clinicopathological characteristics, as well as protein expression of Sox10, GATA3, p53 and p63, in a consecutive series of TNBC patients treated with NAC. Archived hematoxylin & eosin stained slides of core biopsies and resection specimens from 35 TNBC patients were reviewed. The following clinicopathological characteristics were determined at the biopsy level: age at diagnosis, cancer type, Nottingham grade, lympho-vascular invasion, syncytial growth, necrosis, clear cell differentiation, myxoid peritumor stroma, stromal tumor-infiltrating lymphocytes (sTILs) and presence of an in situ component. The MD Anderson residual cancer burden (RCB) score and corresponding RCB class were determined. Immunohistochemistry for Sox10, p53, GATA3 and p63 was performed at the biopsy level. sTILs, either as a continuous or as a dichotomous variable, were the only parameter that was significantly associated with pCR in univariable and multivariable analyses. Assessment of sTILs showed moderate to good interobserver agreement. High sTILs (≥40%) were significantly associated with increased pCR rates, and this association was observer-independent. This retrospective study of a consecutive community-based cohort of TNBC patients confirms that sTILs are a robust, observer-independent predictor for therapeutic response after NAC. The combination of Sox10, GATA3 and p53 immunoreactivity is unlikely to harbor any predictive value for pCR in TNBC.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Biomarcadores Tumorais/imunologia , Linfócitos do Interstício Tumoral/imunologia , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Neoplasias de Mama Triplo Negativas/patologia , Adulto , Idoso , Quimioterapia Adjuvante/métodos , Feminino , Humanos , Pessoa de Meia-Idade , Terapia Neoadjuvante/métodos , Estudos Retrospectivos , Resultado do Tratamento , Neoplasias de Mama Triplo Negativas/imunologia
5.
Anticancer Drugs ; 28(10): 1157-1165, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28926423

RESUMO

This prospective, noninterventional study is the first phase IV trial designed to evaluate trabectedin in patients with advanced soft tissue sarcoma in real-life clinical practice across Europe. To be included in the study, patients must have received more than or equal to one cycle of trabectedin and be currently on treatment. The primary endpoint was progression-free survival as defined by investigators. The secondary endpoints included objective response rate, disease control rate, time to progression and the growth modulation index (GMI), overall survival, and an assessment of the cancer-related symptoms and safety. A total of 218 patients from 41 European centers were evaluated. Patients received a median of six cycles per patient, mostly on an outpatient basis (n=132; 60.6%). The median progression-free survival was 5.9 months, with 70 and 49% of patients free from progression at 3 and 6 months after treatment, respectively. Three (1.4%) patients achieved a complete response and 55 (25.2%) patients achieved a partial response for an objective response rate of 26.6%. A total of 85 (39.0%) patients had disease stabilization for a disease control rate of 65.6%. The median GMI was 0.8, with 5.1 and 38.8% of patients with a GMI of greater than 1.1 to less than 1.33 and greater than or equal to 1.33, respectively. The median overall survival was 21.3 months. Febrile neutropenia (2.3% of patients), neutropenia, nausea, and pneumonia (1.4% each) were the most common trabectedin-related grade 3/4 serious adverse drug reactions. Trabectedin confers clinically meaningful long-term benefits to patients with multiple soft tissue sarcoma histotypes, being either comparable or better than those observed previously in clinical trials, and with a manageable safety profile.


Assuntos
Antineoplásicos Alquilantes/uso terapêutico , Dioxóis/uso terapêutico , Sarcoma/tratamento farmacológico , Tetra-Hidroisoquinolinas/uso terapêutico , Adulto , Idoso , Antineoplásicos Alquilantes/efeitos adversos , Dioxóis/efeitos adversos , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Tetra-Hidroisoquinolinas/efeitos adversos , Trabectedina , Adulto Jovem
6.
Pulm Pharmacol Ther ; 45: 114-120, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28506662

RESUMO

INTRODUCTION: Adipokines are known to play a relevant role in a number of cancer related molecular pathways. Adiponectin is a major adipokine with anti-inflammatory and beneficial metabolic actions. Furthermore, it has been shown to exert anti-carcinogenic effects in various tumor models and some clinical studies suggested an inverse relationship between circulating levels of adiponectin and an increased risk for development of malignancies. On the other hand, the cyclic AMP response element binding (CREB) transcription factor has been clearly linked to lung cancer. METHODS: we analyzed cell proliferation, cell cycle of A549 cells treated with adiponectin as well as CREB activation status in human lung adenocarcinoma A549 cells and in non-small cell lung cancer (NSCLC) samples. RESULTS: adiponectin treatment, at concentrations ranging between 5 and 50 µg/ml mimicking human serum levels, has a significant effect on reducing tumor cell proliferation of A549 cells, mainly by altering cell cycle progression. Importantly, we provide evidence that adiponectin clearly inhibits in a dose- and time-dependent manner CREB phosphorylation (activation) and, at least in part, also the level of CREB protein itself, preceding and accompanying the anti-proliferative effects in response to adiponectin. Moreover, in agreement with previous studies demonstrating that CREB over-expression occurs in many tumors, we also show by western-blotting from lung specimen that CREB is significantly up-regulated in NSCLC samples compared to adjacent normal tissues from six patients. CONCLUSIONS: Overall, our results represent the first evidence of CREB inhibition by adiponectin and may provide new insight into therapeutic strategies for lung cancer.


Assuntos
Adenocarcinoma/metabolismo , Adiponectina/metabolismo , Carcinoma Pulmonar de Células não Pequenas/metabolismo , Proteína de Ligação ao Elemento de Resposta ao AMP Cíclico/metabolismo , Neoplasias Pulmonares/metabolismo , Células A549 , Adenocarcinoma de Pulmão , Adiponectina/administração & dosagem , Ciclo Celular , Proliferação de Células , Proteína de Ligação ao Elemento de Resposta ao AMP Cíclico/antagonistas & inibidores , Relação Dose-Resposta a Droga , Regulação para Baixo , Humanos , Fosforilação , Fatores de Tempo
7.
Artigo em Inglês | MEDLINE | ID: mdl-38299283

RESUMO

BACKGROUND: Soccer match requires anaerobic and aerobic energetic metabolism. The aim of this pilot study was to investigate the changes in blood lactate concentration in young male soccer players in different playing roles at different time points after the soccer match. METHODS: Following an initial screening of 134 young soccer athletes, 8 male athletes (average age of 15.5 ± 5 SD) were chosen for their characteristics similar to those of competitive athletes. Players were categorized as goalkeeper, central defender, central midfielder, and forward. Blood lactate concentrations were determined using a portable device at different times (10 min, 5 and 16 h) after the soccer match by a maximum effort test on a treadmill. The data were analyzed by one-way analysis of variance ANOVA, followed by Bonferroni's post-hoc test. RESULTS: The following results (mean ± SD) were obtained: VO2max (%) 60.33 ± 3.10; blood lactate (mM) end match (10 min) 2.17 ± 0.78, post-match-early (after 5 h) 2.2 ± 0.42, postmatch-late (16 h) 3.2 ± 0.84. ANOVA analysis indicated that the blood LA concentrations at end-match (10 min) and post-match-early (5 h) were statistically significative lower than those determined at post-match-late (16 h) (p < 0.05). CONCLUSION: These results suggest that aerobic mechanisms can also use LA as an energy source, contributing to the reduction of its blood concentration. This effect can be due to reduced maximal work during a soccer match and to the LA removal during exercise at reduced intensity. These data can provide indications for planning suitable training strategies for young male soccer players.

8.
J Pathol Clin Res ; 10(3): e12376, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38738521

RESUMO

The identification of gene fusions has become an integral part of soft tissue and bone tumour diagnosis. We investigated the added value of targeted RNA-based sequencing (targeted RNA-seq, Archer FusionPlex) to our current molecular diagnostic workflow of these tumours, which is based on fluorescence in situ hybridisation (FISH) for the detection of gene fusions using 25 probes. In a series of 131 diagnostic samples targeted RNA-seq identified a gene fusion, BCOR internal tandem duplication or ALK deletion in 47 cases (35.9%). For 74 cases, encompassing 137 FISH analyses, concordance between FISH and targeted RNA-seq was evaluated. A positive or negative FISH result was confirmed by targeted RNA-seq in 27 out of 49 (55.1%) and 81 out of 88 (92.0%) analyses, respectively. While negative concordance was high, targeted RNA-seq identified a canonical gene fusion in seven cases despite a negative FISH result. The 22 discordant FISH-positive analyses showed a lower percentage of rearrangement-positive nuclei (range 15-41%) compared to the concordant FISH-positive analyses (>41% of nuclei in 88.9% of cases). Six FISH analyses (in four cases) were finally considered false positive based on histological and targeted RNA-seq findings. For the EWSR1 FISH probe, we observed a gene-dependent disparity (p = 0.0020), with 8 out of 35 cases showing a discordance between FISH and targeted RNA-seq (22.9%). This study demonstrates an added value of targeted RNA-seq to our current diagnostic workflow of soft tissue and bone tumours in 19 out of 131 cases (14.5%), which we categorised as altered diagnosis (3 cases), added precision (6 cases), or augmented spectrum (10 cases). In the latter subgroup, four novel fusion transcripts were found for which the clinical relevance remains unclear: NAB2::NCOA2, YAP1::NUTM2B, HSPA8::BRAF, and PDE2A::PLAG1. Overall, targeted RNA-seq has proven extremely valuable in the diagnostic workflow of soft tissue and bone tumours.


Assuntos
Neoplasias Ósseas , Hibridização in Situ Fluorescente , Neoplasias de Tecidos Moles , Fluxo de Trabalho , Humanos , Neoplasias Ósseas/genética , Neoplasias Ósseas/diagnóstico , Neoplasias Ósseas/patologia , Neoplasias de Tecidos Moles/genética , Neoplasias de Tecidos Moles/diagnóstico , Neoplasias de Tecidos Moles/patologia , Feminino , Adulto , Masculino , Pessoa de Meia-Idade , Adolescente , Idoso , Análise de Sequência de RNA , Criança , Adulto Jovem , Fusão Gênica , Biomarcadores Tumorais/genética , Pré-Escolar , Idoso de 80 Anos ou mais , Proteínas de Fusão Oncogênica/genética
9.
Artigo em Inglês | MEDLINE | ID: mdl-37174181

RESUMO

Cannabis is the most widely used illicit drug in Western counties and its abuse is particularly high in male adolescents and young adults. Its main psychotropic component, the cannabinoid delta-9-tetrahydrocannabinol (Δ9-THC), interferes in the endogenous endocannabinoid system. This signaling system is involved in the control of many biological activities, including the formation of high-quality male gametes. Direct adverse effects of Δ9-THC in male reproduction are well known in both animal models and humans. Nevertheless, the possibility of long-term effects due to epigenetic mechanisms has recently been reported. In this review, we summarize the main advances in the field suggesting the need to pay attention to the possible long-term epigenetic risks for the reproductive health of cannabis users and the health of their offspring.


Assuntos
Canabinoides , Cannabis , Alucinógenos , Animais , Adolescente , Adulto Jovem , Masculino , Humanos , Dronabinol/efeitos adversos , Epigênese Genética
10.
Nutrients ; 15(20)2023 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-37892504

RESUMO

Health promotion requires good nutrition and an adequate lifestyle, which together contribute to people's well-being [...].


Assuntos
Esportes , Humanos , Suplementos Nutricionais , Exercício Físico , Estado Nutricional
11.
Diagnostics (Basel) ; 13(20)2023 Oct 13.
Artigo em Inglês | MEDLINE | ID: mdl-37892023

RESUMO

[18F]FDG PET/CT is used in the workup of indeterminate soft tissue tumors (STTs) but lacks accuracy in the detection of malignant STTs. The aim of this study is to evaluate whether dual-time point [18F]FDG PET/CT imaging (DTPI) can be useful in this indication. In this prospective study, [18F]FDG PET/CT imaging was performed 1 h (t1) and 3 h (t2) after injection. Tumor uptake (SUVmax) was calculated at each time point to define a retention index (RI) corresponding to the variation between t1 and t2 (%). Sixty-eight patients were included, representing 20 benign and 48 malignant tumors (including 40 sarcomas). The RI was significantly higher in malignant STTs than in benign STTs (median: +21.8% vs. -2%, p < 0.001). An RI of >14.3% predicted STT malignancy with a specificity (Sp) of 90% and a sensitivity (Se) of 69%. An SUVmaxt1 of >4.5 was less accurate with an Sp of 80% and an Se of 60%. In a subgroup of tumors with at least mild [18F]FDG uptake (SUVmax ≥ 3; n = 46), the RI significantly outperformed the diagnostic accuracy of SUVmax (AUC: 0.88 vs. 0.68, p = 0.01). DTPI identifies malignant STT tumors with high specificity and outperforms the diagnostic accuracy of standard PET/CT.

13.
Nutrients ; 14(5)2022 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-35267974

RESUMO

SARS-CoV-2 virus, infecting human cells via its spike protein, causes Coronavirus disease 2019 (COVID-19). COVID-19 is characterized by shortness of breath, fever, and pneumonia and is sometimes fatal. Unfortunately, to date, there is still no definite therapy to treat COVID-19. Therefore, the World Health Organization (WHO) approved only supportive care. During the COVID-19 pandemic, the need to maintain a correct intake of nutrients to support very weakened patients in overcoming disease arose. The literature available on nutrient intake for COVID-19 is mainly focused on prevention. However, the safe intake of micro- and/or macro-nutrients can be useful either for preventing infection and supporting the immune response during COVID-19, as well as in the post-acute phase, i.e., "long COVID", that is sometimes characterized by the onset of various long lasting and disabling symptoms. The aim of this review is to focus on the role of nutrient intake during all the different phases of the disease, including prevention, the acute phase, and finally long COVID.


Assuntos
COVID-19 , COVID-19/complicações , COVID-19/prevenção & controle , Humanos , Nutrientes , Pandemias/prevenção & controle , SARS-CoV-2 , Síndrome de COVID-19 Pós-Aguda
14.
Case Rep Oncol ; 15(1): 238-244, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35431863

RESUMO

Epidemiological studies suggest that around 10% of breast cancers are due to hereditary predisposition. The risk of cancer is exponentially increased in patients harboring BRCA1 or BRCA2 mutations. Cumulative breast cancer risk by age 80 is estimated to 72% for BRCA1 mutation carriers and 69% for BRCA2. The cumulative risk estimates for developing ovarian cancer by age 80 are 44% for BRCA1 mutation carriers and 17% for BRCA2. We present here the case of a 59-year-old woman who developed a left breast cancer in 2014 treated by conservative surgery, radiotherapy, and endocrine therapy with letrozole. The diagnosis of BRCA1 mutation was performed in 2015. In 2018, the patient was referred to our institution for treatment of an aggressive angiosarcoma developed in the same breast. She had undergone radical hysterectomy by the age of 49 years for a benign uterine pathology. In 2020, she developed a tumor in the gastric wall; histological analysis confirmed a serous papillary carcinoma of ovarian origin. She was treated - after gastrectomy and lymphadenectomy - with 6 courses of carboplatin and paclitaxel followed by olaparib therapy. In 2021, she suffered from a chest recurrence of high grade angiosarcoma. New resection with free margins was performed. We discuss the link between angiosarcomas and BRCA mutations, the therapeutic options for angiosarcoma and ovarian cancer of extra ovarian origin and the follow-up modalities.

15.
Clin Case Rep ; 9(3): 1694-1698, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33768917

RESUMO

Patients with soft tissue sarcomas should be assessed for neurotrophic tropomyosin receptor kinase (NTRK) gene fusions as neoadjuvant treatment with larotrectinib may prevent amputation.

16.
Respir Med ; 187: 106569, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34399368

RESUMO

The Sputnik V COVID-19 vaccine is a member of the so-called vector vaccines and uses two different vectors (Ad26 priming and Ad5 boost) to reduce the risk of a reduction in the effectiveness of the vaccination. Real life data indicate an efficacy of the vaccine above 97%. Low cost and no need for ultra-cold storage temperature temperatures are other pluses of the Sputnik V vaccine. However, there are also several important shortcomings that must be considered such as the possible reduction of its immunogenicity in the presence of very high Ad5 neutralizing antibody titres and the decrease with age of the antibody titres neutralizing the virus. Furthermore, there is emerging documentation that Sputnik V has a reduced neutralizing capacity against the Beta variant and all variants with the spike protein carrying the E484K substitution. Nevertheless, due to its characteristics, Sputnik V could be another useful means of satisfying the need for mass vaccination. However, it is imperative to document the efficacy and safety of the Sputnik V vaccine in individuals with high pre-existing anti-Ad26 and Ad5-neutralizing antibody titres and in those under the age of 18 or older than 60 years and be certain that Sputnik V does not cause the rare development of immune thrombotic thrombocytopenia. It is hoped that the now widespread use of this vaccine will generate a large pragmatic real-world study with data accessible to anyone interested in verifying them.


Assuntos
Vacinas contra COVID-19/farmacologia , COVID-19/prevenção & controle , Vacinas contra COVID-19/administração & dosagem , Vacinas contra COVID-19/efeitos adversos , Humanos
17.
Am J Respir Cell Mol Biol ; 42(2): 250-4, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19448152

RESUMO

Nociceptin/orphanin FQ (N/OFQ), the endogenous ligand for the N/OFQ peptide receptor (NOP), inhibits tachykinin release in the airway of several animal models. The aim of this study was to investigate the role of the N/OFQ-NOP receptor system in bronchoconstriction induced by sensory nerve activation in the isolated mouse lung. We used C57BL/6J NOP(+/+), NOP(-/-), and Balb/C mice sensitized (or not) to ovalbumin. Bronchopulmonary function coupled with measurements of endogenous N/OFQ levels before and after capsaicin-induced bronchoconstriction in the presence or absence of NOP-selective agonists/antagonists are presented. N/OFQ significantly inhibited capsaicin-induced bronchoconstriction in both naive and sensitized mice, these latter animals displaying airway hyperresponsiveness to capsaicin. The inhibitory effect of N/OFQ were not observed in NOP(-/-) mice, and were mimicked/abolished by the selective NOP agonist/antagonist University of Ferrara Peptide (UFP)-112/UFP-101 in NOP(+/+) mice. UFP-101 alone potentiated the effect of capsaicin in naive mice, but not in sensitized mice. Endogenous N/OFQ levels significantly decreased in sensitized mice relative to naive mice. We have demonstrated that a reduction in endogenous N/OFQ, or the lack of its receptor, causes an increase in capsaicin-induced bronchoconstriction, implying a role for the N/OFQ-NOP receptor system in the modulation of capsaicin effects. Moreover, for the first time, we document differential airway responsiveness to capsaicin between naive and sensitized mice due, at least in part, to decreased endogenous N/OFQ levels in sensitized mice.


Assuntos
Broncoconstrição/fisiologia , Pulmão/inervação , Pulmão/fisiologia , Peptídeos Opioides/fisiologia , Células Receptoras Sensoriais/fisiologia , Alérgenos/administração & dosagem , Animais , Broncoconstrição/efeitos dos fármacos , Broncoconstrição/imunologia , Capsaicina/farmacologia , Técnicas In Vitro , Pulmão/imunologia , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Endogâmicos C57BL , Camundongos Knockout , Peptídeos Opioides/deficiência , Peptídeos Opioides/genética , Ovalbumina/administração & dosagem , Ovalbumina/imunologia , Receptores Opioides/fisiologia , Receptor de Nociceptina , Nociceptina
18.
J Sports Med Phys Fitness ; 58(7-8): 1135-1145, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-28738670

RESUMO

Using performance-enhancing drugs concerns not only elite Olympic and Paralympic Games' athletes but also amateur athletes, who are making increasing use of substances and/or methods. Furthermore, a new frontier reached by the doping is the use of genes. World Anti-Doping Agency expressly prohibited the participation in competitive sports by the athlete in case of taking banned substances to treat disease in the event that the above assumption implies an excessive improvement of performance. This study aims to analyze and show the doping control as an essential part of the antidoping program to promote and protect the integrity of sport and athlete's health. Testing is carried out in accordance with the World Anti-Doping Code (WADC) and several international standards (ISs). The ISs were developed for laboratories, testing, the prohibited list, and for therapeutic use exemptions. It seems that the 2009 version of the WADC obliges all the healthcare professionals not to assist athletes engaged in doping behaviours; they can be removed from working with athletes. Many people do not know doping's dangerous effects on health. It is necessary, therefore, to implement the knowledge on this issue through public and sports institutions information and awareness campaigns. For this reason, local institutions and the National Olympic Committee shall give tools, in particular economic, to carry out the work of education, training, and control.


Assuntos
Desempenho Atlético/ética , Dopagem Esportivo/ética , Desenvolvimento de Programas , Atletas , Dopagem Esportivo/prevenção & controle , Humanos
19.
Life Sci ; 77(21): 2717-22, 2005 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-15979652

RESUMO

Naltrexone (NTX) is widely used to prevent relapse of opioid-dependent patients but its association with insomnia and "hyperexcitability" can result in treatment withdrawal. We evaluated whether NTX combined with the benzodiazepine prazepam was more effective than NTX in keeping patients opioid-free. We determined the relapse rate over 6 months in 56 opioid-dependent subjects, divided into 4 equal groups. All groups received psychological support and underwent urine tests for drug metabolites twice weekly. Group 1 did not receive pharmacological treatment (controls). Group 2 received NTX alone (one 50-mg tablet daily); group 3 received NTX (one 50-mg tablet daily) plus placebo (one tablet twice daily); and group 4 received NTX (one 50-mg tablet daily) plus prazepam (one 10-mg tablet twice daily). Ten patients of group 1 relapsed within 3 months, one after 6 months and three remained opioid-free. Six patients of group 2 relapsed within three months, two after 6 months, and six remained opioid-free. Seven patients of group 3 relapsed three months, one after 6 months and six patients remained opioid-free. In group 4, one patient relapsed within 3 months and one patient after 6 months; 12 patients of this group remained opioid-free. At urine tests, a significantly higher percent patients of group 4 remained free of Delta(9)-tetrahydrocannabinol versus patients of groups 2 and 3. In conclusion, many patients remained opioid-free on NTX alone or combined with prazepam, with a significant advantage for the NTX plus prazepam group.


Assuntos
Ansiolíticos/uso terapêutico , Naltrexona/uso terapêutico , Antagonistas de Entorpecentes/uso terapêutico , Transtornos Relacionados ao Uso de Opioides/reabilitação , Prazepam/uso terapêutico , Adulto , Ansiolíticos/efeitos adversos , Quimioterapia Combinada , Feminino , Seguimentos , Humanos , Masculino , Naltrexona/efeitos adversos , Antagonistas de Entorpecentes/efeitos adversos , Entorpecentes/urina , Transtornos Relacionados ao Uso de Opioides/urina , Prazepam/efeitos adversos , Prevenção Secundária , Detecção do Abuso de Substâncias
20.
Funct Neurol ; 30(2): 91-8, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26415788

RESUMO

The intentional activation of autonomic dysreflexia (AD, also called "boosting"), a practice sometimes used by athletes affected by spinal cord injury (SCI), is banned by the International Paralympic Committee (IPC). Although various studies have addressed doping and AD as separate issues, studies evaluating AD as a doping method are lacking. The aim of this brief review is to contribute to better understanding of the relationship between doping and AD. We conducted a literature search of the PubMed database (from 1994 onwards). The key search terms "autonomic dysreflexia" and "boosting" were crossreferenced with "sport performance". The official Paralympic website was also viewed. AD is a potent sympathetic reflex, due to a massive release of noradrenaline, that results in marked vasoconstriction distal to the level of the lesion. Athletes with SCI often self-inflict physical suffering in order to induce this phenomenon, which carries high health risks (i.e., hypertension, cerebral hemorrhage, stroke and sudden death). Boosting is a practice that can be compared to doping methods and the IPC expressly prohibits it. Any deliberate attempt to induce AD, if detected, will lead to disqualification from the sporting event and subsequent investigation by the IPC Legal and Ethics Committee.


Assuntos
Disreflexia Autonômica/fisiopatologia , Dopagem Esportivo , Atletas/psicologia , Pressão Sanguínea , Humanos , Comportamento Autodestrutivo/fisiopatologia
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