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1.
Biochem Genet ; 2024 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-39325241

RESUMO

Inflammatory bowel disease (IBD) has become a common global health problem as prevalence continues to rise. It is often associated with increased risk of colorectal cancer (CRC) development. Limitations in current IBD biomarker-based diagnosis hinder the accuracy of early detection of CRC progression. Therefore, in this study, we proposed the use of transcription factor (TF)-based biomarkers that can potentially detect the transition of IBD to CRC. Various bioinformatic analysis and online database validations, and RT-qPCR validations were performed to identify possible diagnostic TFs. RUNX1 was identified as a promising TF that regulates 106 IBD/CRC-related genes. The incorporation of RUNX1 in combination with currently known IBD biomarkers, FEV + NFKB1 + RELA, achieved a comparable sensitivity and specificity scores of 99% and 87%, respectively, while RUNX1 in combination with known CRC markers, CEA + TIMP1 + CA724 + CA199, achieved a sensitivity and specificity score of 97% and 99%, respectively. Furthermore, a small pilot RT-qPCR-based analysis confirmed a demarcated shift in expression profiles in CA724, CEA, RUNX1 and TIMP1 in IBD patients compared to CRC patients' tissue samples. Specifically, CA724 is noticeably elevated in IBD, while the levels of CEA, RUNX1 with TIMP1 are probable genes that may be employed in discerning IBD progression to CRC. Therefore, these preliminary results once validated in large patient cohorts could potentially have a significant impact on CRC disease stratification, resulting in a more precise prediction for treatment and treatment outcomes, especially in South African patients.

2.
Med Oncol ; 41(10): 243, 2024 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-39240415

RESUMO

This study investigates the intricate mechanisms underlying the correlation between elevated consumption of harmful fats and the onset of kidney malignancies. The rise in global obesity rates has been accompanied by an increased prevalence of renal cancers, prompting an exploration into the molecular pathways and biological processes linking these phenomena. Through an extensive review of current literature and clinical studies, we identify potential key factors contributing to the carcinogenic influence of harmful fats on renal tissues. Our analysis highlights the role of adipose tissue-derived factors, inflammatory mediators, and lipid metabolism dysregulation in fostering a microenvironment conducive to renal tumorigenesis. Furthermore, we delve into the impact of harmful fats on signaling pathways associated with cell proliferation, apoptosis evasion, and angiogenesis within the renal parenchyma. This review underscores the importance of elucidating the molecular intricacies linking lipid metabolism and kidney malignancies, offering a foundation for future research and the development of targeted preventive and therapeutic interventions. The findings discussed herein contribute to our understanding of the complex relationship between lipid mediators and renal cancer, providing a basis for public health strategies aimed at mitigating the impact of harmful fats on kidney health.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Metabolismo dos Lipídeos , Humanos , Neoplasias Renais/metabolismo , Neoplasias Renais/patologia , Metabolismo dos Lipídeos/fisiologia , Carcinoma de Células Renais/metabolismo , Carcinoma de Células Renais/patologia , Animais , Transdução de Sinais/fisiologia , Reprogramação Metabólica
3.
Foods ; 13(18)2024 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-39335842

RESUMO

Over 21 days of cold storage, the quality and microbial composition of beef steaks in response to different high-CO2 packaging conditions achieved by flushing gas mixtures or embedding gas emitters into the packages were studied. The results revealed that the high levels of CO2, achieved by either the gas flushing or the CO2 emitter pads, effectively controlled the number of aerobic counts. The headspace CO2 increased quickly in response to using the CO2 emitter pads, and the meat samples presented different pH levels and surface color (a* and b*) values compared to the samples packaged with the gas flushing technique. Excessive accumulation of gas in the packages that contained CO2 emitters resulted in package swelling and higher levels of drip loss. The longest overall quality and attractive red color of the meat samples were observed when the packages were initially flushed with the headspace gas mixture containing high levels of oxygen. Overall, using CO2 emitters for meat packaging can be suggested when a topfilm with proper permeability to O2 and CO2 gases is used to regulate the internal CO2/O2 and gas/product ratios.

5.
J Xray Sci Technol ; 32(5): 1331-1348, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39093110

RESUMO

INTRODUCTION: Intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) are the main radiotherapy techniques for treating and managing rectal cancer. Collimator rotation is one of the crucial parameters in radiotherapy planning, and its alteration can cause dosimetric variations. This study assessed the effect of collimator rotation on the dosimetric results of various IMRT and VMAT plans for rectal cancer. MATERIALS AND METHODS: Computed tomography (CT) images of 20 male patients with rectal cancer were utilized for IMRT and VMAT treatment planning with various collimator angles. Nine different IMRT techniques (5, 7, and 9 coplanar fields with collimator angles of 0°, 45°, and 90°) and six different VMAT techniques (1 and 2 full coplanar arcs with collimator angles of 0°, 45°, and 90°) were planned for each patient. The dosimetric results of various treatment techniques for target tissue (conformity index [CI] and homogeneity index [HI]) and organs at risk (OARs) sparing (parameters obtained from OARs dose-volume histograms [DVH]) as well as radiobiological findings were analyzed and compared. RESULTS: The 7-fields IMRT technique demonstrated lower bladder doses (V40Gy, V45Gy), unaffected by collimator rotation. The 9-fields IMRT and 2-arcs VMAT (excluding the 90-degree collimator) had the lowest V35Gy and V45Gy. A 90-degree collimator rotation in 2-arcs VMAT significantly increased small bowel and bladder V45Gy, femoral head doses, and HI values. Radiobiologically, the 90-degree rotation had adverse effects on small bowel NTCP (normal tissue complication probability). No superiority was found for a 45-degree collimator rotation over 0 or 30 degrees in VMAT techniques. CONCLUSION: Collimator rotation had minimal impact on dosimetric parameters in IMRT planning but is significant in VMAT techniques. A 90-degree rotation in VMAT, particularly in a 2-full arc technique, adversely affects PTV homogeneity index, bladder dose, and small bowel NTCP. Other evaluated collimator angles did not significantly affect VMAT dosimetrical or radiobiological outcomes.


Assuntos
Dosagem Radioterapêutica , Planejamento da Radioterapia Assistida por Computador , Radioterapia de Intensidade Modulada , Neoplasias Retais , Humanos , Radioterapia de Intensidade Modulada/métodos , Neoplasias Retais/radioterapia , Neoplasias Retais/diagnóstico por imagem , Masculino , Planejamento da Radioterapia Assistida por Computador/métodos , Órgãos em Risco/efeitos da radiação , Rotação , Tomografia Computadorizada por Raios X/métodos , Radiometria/métodos
6.
Environ Toxicol Pharmacol ; 110: 104532, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39134163

RESUMO

Thiacloprid, a hazardous neonicotinoid insecticide, prevalent in daily agricultural practices, raises concerns due to the harmful effects of its residues on food items, and on unintended organisms poses a significant threat to human health. Introduced in 1990, Thiacloprid have gained popularity for its perceived effectiveness and reduced risks to non-target animals. However, emerging research in recent years reports significant toxic effects of Thiacloprid on non-target species, spanning neurotoxicity, immunotoxicity, hepatotoxicity, nephrotoxicity, and reproductive issues. Mammalian studies, particularly involving rodents, reveal cognitive impairment, hippocampal damage, and hepatic abnormalities upon Thiacloprid exposure. Reproductive toxicity and DNA damage are imminent concerns, disrupting gestational epigenetic reprogramming and suggesting persistent effects on future generations. Genotoxic effects, Embryotoxic, and observed reproductive toxicity accentuate the need for caution in the utilization of Thiacloprid. This review highlights reported toxic effects produced by Thiacloprid in recent years, challenging the initial belief in its lower toxicity for vertebrates.


Assuntos
Inseticidas , Neonicotinoides , Resíduos de Praguicidas , Tiazinas , Neonicotinoides/toxicidade , Humanos , Animais , Tiazinas/toxicidade , Inseticidas/toxicidade , Resíduos de Praguicidas/toxicidade , Resíduos de Praguicidas/análise , Piridinas/toxicidade
8.
Ann Surg Oncol ; 31(11): 7315-7322, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38954091

RESUMO

BACKGROUND: Invasive lobular carcinoma (ILC) is the second most common subtype of breast cancer. Although mammography is known to have low sensitivity for ILC, there are no data to guide the optimal surveillance after treatment. We explored surveillance strategies after breast-conserving surgery (BCS) for ILC and determined the proportion of imaging-detected recurrences versus interval cancers. METHODS: From an institutional database of 813 women, we retrospectively identified patients who underwent BCS for stage I-III ILC and subsequently had a recurrence. We categorized patients by surveillance strategy and determined the modality of recurrence detection. Interval cancer rates for local recurrences were compared across surveillance strategies using the Chi-square test. We evaluated overall survival with the log-rank test and a Cox proportional hazards model. RESULTS: We included 58 patients with ILC who had a recurrence after BCS. Of these, 22 (37.9%) had local recurrence, 27 (46.6%) had distant recurrence, and 9 (15.5%) had both local and distant recurrence. Most patients underwent routine mammographic surveillance (65.2%), with 19.6% having supplemental breast magnetic resonance imaging (MRI) and 15.2% having no surveillance. The interval cancer rate was significantly higher in the mammographic surveillance group compared with the MRI surveillance group (61.9% vs. 16.7%; p < 0.001). CONCLUSION: In this study of patients with recurrence after BCS for primary treatment of stage I-III ILC, we found that most local recurrences were not detected by surveillance mammography. These data support further investigation of supplemental imaging beyond mammography specifically for patients with ILC who undergo BCS.


Assuntos
Neoplasias da Mama , Carcinoma Lobular , Imageamento por Ressonância Magnética , Mamografia , Mastectomia Segmentar , Recidiva Local de Neoplasia , Humanos , Neoplasias da Mama/cirurgia , Neoplasias da Mama/patologia , Neoplasias da Mama/diagnóstico por imagem , Feminino , Carcinoma Lobular/cirurgia , Carcinoma Lobular/patologia , Carcinoma Lobular/diagnóstico por imagem , Recidiva Local de Neoplasia/patologia , Estudos Retrospectivos , Pessoa de Meia-Idade , Mamografia/métodos , Idoso , Seguimentos , Taxa de Sobrevida , Imageamento por Ressonância Magnética/métodos , Invasividade Neoplásica , Prognóstico , Adulto , Vigilância da População
9.
Cureus ; 16(5): e60086, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38860078

RESUMO

Anthracyclines are effective chemotherapeutic agents widely used to treat various cancers, but their use is limited by the risk of cardiotoxicity and heart failure. While strategies like dose reduction have been explored, there are no well-established therapies to mitigate this risk. Emerging evidence suggests sodium-glucose cotransporter 2 inhibitors (SGLT2i) may have cardioprotective effects, providing a rationale for investigating their potential utility in anthracycline-treated patients. We conducted a systematic review and meta-analysis to synthesize available evidence on the efficacy of SGLT2i in reducing heart failure incidence and mortality in patients undergoing anthracycline-based cancer therapy. Relevant studies were identified through comprehensive database searches and screened based on predefined criteria. Data extraction and quality assessment were performed independently by two reviewers. Four observational studies, encompassing 5,590 patients, were included. The pooled analysis showed a higher but non-significant risk of developing heart failure in the non-SGLT2i group compared to the SGLT2i group (RR = 0.67, 95% CI: 0.40-1.41). The risk of all-cause mortality was significantly lower in patients receiving SGLT2i (RR = 0.55, 95% CI: 0.39-0.77). This meta-analysis suggests SGLT2i are associated with a lower risk of mortality and heart failure incidence in anthracycline-treated patients, although larger studies are needed to confirm these findings. The mechanisms underlying these potential benefits require further elucidation. Despite limitations, this analysis highlights the promising role of SGLT2i as a cardioprotective strategy in this high-risk population.

10.
Cell Biochem Biophys ; 82(3): 1763-1776, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38916791

RESUMO

Conventional cancer therapies can have significant adverse effects as they are not targeted to cancer cells and may damage healthy cells. Single-stranded oligonucleotides assembled in a particular architecture, known as aptamers, enable them to attach selectively to target areas. Usually, they are created by Systematic Evolution of Ligand by Exponential enrichment (SELEX), and they go through a rigorous pharmacological revision process to change their therapeutic half-life, affinity, and specificity. They could thus offer a viable substitute for antibodies in the targeted cancer treatment market. Although aptamers can be a better choice in some situations, antibodies are still appropriate for many other uses. The technique of delivering aptamers is simple and reasonable, and the time needed to manufacture them is relatively brief. Aptamers do not require animals or an immune response to be produced, in contrast to antibodies. When used as a medication, aptamers can directly suppress tumor cells. As an alternative, they can be included in systems for targeted drug delivery that administer medications specifically to tumor cells while reducing toxicity to healthy cells. The most recent and cutting-edge methods for treating gastrointestinal (GI) tract cancer with aptamers will be covered in this review, with a focus on targeted therapy as a means of conquering resistance to traditional medicines.


Assuntos
Aptâmeros de Nucleotídeos , Neoplasias Gastrointestinais , Humanos , Aptâmeros de Nucleotídeos/uso terapêutico , Aptâmeros de Nucleotídeos/química , Neoplasias Gastrointestinais/tratamento farmacológico , Neoplasias Gastrointestinais/metabolismo , Neoplasias Gastrointestinais/terapia , Técnica de Seleção de Aptâmeros , Animais , Sistemas de Liberação de Medicamentos , Antineoplásicos/uso terapêutico , Antineoplásicos/química , Antineoplásicos/farmacologia
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