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1.
Eur J Cancer ; 209: 114270, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39142211

RESUMO

PURPOSE: Prognostic biomarkers remain necessary in sporadic desmoid tumor (DT) because the clinical course is unpredictable. DT location along with gene expression between thoracic and abdominal wall locations was analyzed. METHOD: Sporadic DT patients (GEIS Registry) diagnosed between 1982 and 2018 who underwent upfront surgery were enrolled retrospectively in this study. The primary endpoint was relapse-free survival (RFS). Additionally, the gene expression profile was analyzed in DT localized in the thoracic or abdominal wall, harboring the most frequent CTNNB1 T41A mutation. RESULTS: From a total of 454 DT patients, 197 patients with sporadic DT were selected. The median age was 38.2 years (1.8-89.1) with a male/female distribution of 33.5/66.5. Most of them harbored the CTNNB1 T41A mutation (71.6 %), followed by S45F (17.8 %) and S45P (4.1 %). A significant worse median RFS was associated with males (p = 0.019), tumor size ≥ 6 cm (p = 0.001), extra-abdominal DT location (p < 0.001) and the presence of CTNNB1 S45F mutation (p = 0.013). In the multivariate analysis, extra-abdominal DT location, CTNNB1 S45F mutation and tumor size were independent prognostic biomarkers for worse RFS. DTs harboring the CTNNB1 T41A mutation showed overexpression of DUSP1, SOCS1, EGR1, FOS, LIF, MYC, SGK1, SLC2A3, and IER3, and underexpression of BMP4, PMS2, HOXA9, and WISP1 in thoracic versus abdominal wall locations. CONCLUSION: Sporadic DT location exhibits a different prognosis in terms of RFS favoring the abdominal wall compared to extra-abdominal sites. A differential gene expression profile under the same CTNNB1 T41A mutation is observed in the abdominal wall versus the thoracic wall, mainly affecting the Wnt/ß-catenin, TGFß, IFN, and TNF pathways.


Assuntos
Fibromatose Agressiva , Mutação , Transcriptoma , beta Catenina , Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Fibromatose Agressiva/genética , Fibromatose Agressiva/patologia , Fibromatose Agressiva/mortalidade , Fibromatose Agressiva/metabolismo , Adolescente , Prognóstico , Adulto Jovem , Idoso , Estudos Retrospectivos , Criança , Idoso de 80 Anos ou mais , beta Catenina/genética , beta Catenina/metabolismo , Pré-Escolar , Lactente , Biomarcadores Tumorais/genética , Neoplasias Abdominais/genética , Neoplasias Abdominais/patologia , Neoplasias Abdominais/mortalidade , Perfilação da Expressão Gênica , Neoplasias Torácicas/genética , Neoplasias Torácicas/patologia , Neoplasias Torácicas/mortalidade
2.
J Biomed Sci ; 31(1): 71, 2024 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-39004727

RESUMO

BACKGROUND: Critical limb-threatening ischemia (CLTI) constitutes the most severe manifestation of peripheral artery disease, usually induced by atherosclerosis. CLTI patients suffer from high risk of amputation of the lower extremities and elevated mortality rates, while they have low options for surgical revascularization due to associated comorbidities. Alternatively, cell-based therapeutic strategies represent an effective and safe approach to promote revascularization. However, the variability seen in several factors such as cell combinations or doses applied, have limited their success in clinical trials, being necessary to reach a consensus regarding the optimal "cellular-cocktail" prior further application into the clinic. To achieve so, it is essential to understand the mechanisms by which these cells exert their regenerative properties. Herein, we have evaluated, for the first time, the regenerative and vasculogenic potential of a combination of endothelial colony forming cells (ECFCs) and mesenchymal stem cells (MSCs) isolated from adipose-tissue (AT), compared with ECFCs from umbilical cord blood (CB-ECFCs) and AT-MSCs, in a murine model of CLTI. METHODS: Balb-c nude mice (n:32) were distributed in four different groups (n:8/group): control shams, and ischemic mice (after femoral ligation) that received 50 µl of physiological serum alone or a cellular combination of AT-MSCs with either CB-ECFCs or AT-ECFCs. Follow-up of blood flow reperfusion and ischemic symptoms was carried out for 21 days, when mice were sacrificed to evaluate vascular density formation. Moreover, the long-term molecular changes in response to CLTI and both cell combinations were analyzed in a proteomic quantitative approach. RESULTS: AT-MSCs with either AT- or CB-ECFCs, promoted a significant recovery of blood flow in CLTI mice 21 days post-ischemia. Besides, they modulated the inflammatory and necrotic related processes, although the CB group presented the slowest ischemic progression along the assay. Moreover, many proteins involved in the repairing mechanisms promoted by cell treatments were identified. CONCLUSIONS: The combination of AT-MSCs with AT-ECFCs or with CB-ECFCs promoted similar revascularization in CLTI mice, by restoring blood flow levels, together with the modulation of the inflammatory and necrotic processes, and reduction of muscle damage. The protein changes identified are representative of the molecular mechanisms involved in ECFCs and MSCs-induced revascularization (immune response, vascular repair, muscle regeneration, etc.).


Assuntos
Tecido Adiposo , Modelos Animais de Doenças , Isquemia , Células-Tronco Mesenquimais , Camundongos Endogâmicos BALB C , Camundongos Nus , Animais , Camundongos , Isquemia/terapia , Isquemia/fisiopatologia , Cordão Umbilical/citologia , Masculino , Transplante de Células-Tronco Mesenquimais/métodos , Neovascularização Fisiológica , Células Endoteliais , Humanos
4.
Cancer Rep (Hoboken) ; 7(2): e1971, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38351528

RESUMO

BACKGROUND: Cancer is the leading cause of death among Asian Americans, who often face barriers to cancer care. Cancer supportive care needs among Asian Americans remain understudied. AIMS: We examined cancer supportive care needs and participant factors correlated with these needs, identified profiles of supportive care needs, and examined whether needs profiles are associated with quality of life among Asian American adults. METHODS AND RESULTS: We recruited 47 Asian American adults with colorectal, liver, or lung cancer who spoke Chinese, English, or Vietnamese, and were starting or undergoing cancer treatment. We assessed cancer supportive care needs in four domains: cancer information, daily living, behavioral health, and language assistance. Hierarchical cluster analysis was used to identify clusters of participants based on their supportive need profiles to further examine the association between need profiles and quality of life (QoL) assessed by the Functional Assessment of Cancer Therapy. Participants (mean age = 57.6) included 72% males and 62% spoke English less than very well. Older participants (age ≥ 65) and those with annual income <$50K reported higher daily living needs. Men and younger participants (age < 50) reported higher behavioral health needs. We found three clusters displaying distinct cancer supportive need profiles: Cluster 1 (28% of the sample) displayed high needs across all domains; Cluster 2 (51%) had low needs across all domains; and Cluster 3 (21%) had high needs for cancer information and daily living. Cluster 1 participants reported the lowest QoL. CONCLUSION: Cancer supportive care needs among Asian American patients with colorectal, liver, and lung cancer were associated with patient characteristics and QoL. Understanding cancer supportive care needs will inform future interventions to improve care and QoL for Asian American patients with cancer. CLINICALTRIALS: gov Identifier: NCT03867916.


Assuntos
Neoplasias Colorretais , Neoplasias Hepáticas , Neoplasias Pulmonares , Navegação de Pacientes , Portais do Paciente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Asiático , Neoplasias Colorretais/terapia , Internet , Neoplasias Pulmonares/terapia , Qualidade de Vida , Neoplasias Hepáticas/terapia
5.
J Infect Dev Ctries ; 17(5): 707-712, 2023 05 31.
Artigo em Inglês | MEDLINE | ID: mdl-37279416

RESUMO

INTRODUCTION: Infantile acute gastroenteritis (AGE) is a leading cause of morbidity and mortality, particularly in developing countries. The most frequent etiological agents of viral gastroenteritis in children are adenovirus, astrovirus, rotavirus, and norovirus, the last two, leading causes. Thus, the aim of this study was to identify the presence of these two viruses in children with AGE, from two cities located in the Southeast and the Northwest regions of México. METHODOLOGY: HuNoVs were detected and characterized by RT-PCR and sequencing, while RVs were detected by RNA electrophoresis. RESULTS: The presence of RV and HuNoV was evaluated in 81 stool samples; 37 were collected between April and July 2013 from patients with acute diarrhea in Merida, and 44 were collected between January and June 2017 in Chihuahua, who attended health services. Despite vaccination, RV resulted in the predominant viruses detected, with 30.8% (25/81) positivity, while HuNoV infection was present in 8.6% (7/81) of the stool samples; GII strains were identified circulating in the Southeast, while GI strains were identified in the Northwest. Moreover, co-infections with both viruses were detected at a prevalence rate of 2.4% (2/81). CONCLUSIONS: The circulation of RV and HuNoV in the country is continuous and should be constantly monitored due to their impact on public health.


Assuntos
Infecções por Caliciviridae , Gastroenterite , Norovirus , Infecções por Rotavirus , Rotavirus , Vírus , Humanos , Criança , Lactente , Rotavirus/genética , Norovirus/genética , Cidades , México/epidemiologia , Gastroenterite/epidemiologia , Vírus/genética , Fezes , Infecções por Caliciviridae/epidemiologia , Infecções por Rotavirus/epidemiologia
6.
Front Cell Dev Biol ; 11: 1138571, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36936692

RESUMO

Antigen cross-presentation is a vital mechanism of dendritic cells and other antigen presenting cells to orchestrate the priming of cytotoxic responses towards killing of infected or cancer cells. In this process, exogenous antigens are internalized by dendritic cells, processed, loaded onto MHC class I molecules and presented to CD8+ T cells to activate them. Sec22b is an ER-Golgi Intermediate Compartment resident SNARE protein that, in partnership with sintaxin4, coordinates the recruitment of the transporter associated with antigen processing protein and the peptide loading complex to phagosomes, where antigenic peptides that have been proteolyzed in the cytosol are loaded in MHC class I molecules and transported to the cell membrane. The silencing of Sec22b in dendritic cells primary cultures and conditionally in dendritic cells of C57BL/6 mice, critically impairs antigen cross-presentation, but neither affects other antigen presentation routes nor cytokine production and secretion. Mice with Sec22b conditionally silenced in dendritic cells (Sec22b-/-) show deficient priming of CD8+ T lymphocytes, fail to control tumor growth, and are resistant to anti-checkpoint immunotherapy. In this work, we show that Sec22b-/- mice elicit a deficient specific CD8+ T cell response when challenged with sublethal doses of Trypanosoma cruzi trypomastigotes that is associated with increased blood parasitemia and diminished survival.

7.
Cancer Treat Res Commun ; 33: 100646, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36335799

RESUMO

BACKGROUND: In clinical studies, first-line afatinib demonstrated efficacy in Del19-EGFR NSCLC. MATERIALS AND METHODS: This prospective, non-interventional study assessed efficacy and safety of first-line afatinib in patients with advanced/metastatic NSCLC with Del19-EGFR from Galicia (Spain), with a preplanned analysis by age (<70 vs ≥70 years). RESULTS: Median age of 46 patients enrolled was 69.5 years (range 37-87). The objective response rate (ORR) was 78.2%, with median progression-free survival (PFS) of 20.5 months (95% CI 12.7, 28.3) and median overall survival (OS) of 37.5 months (95% CI 19.2-55.8). Outcomes by age (<70 vs ≥70 years) were ORR of 82.6% vs 73.9%, median PFS of 20.2 months (95% CI 14.8-25.6) vs 24.1 (9.8-38.3), and median OS of 45.1 months (95% CI, 17.0-73.1) vs 33.9 (28.7-39.1), respectively. Median treatment duration was 17.2 months (range 0.4-64.1) with 11 patients still on treatment; 14 patients received osimertinib at discontinuation due to T790M. Grade 3 adverse events included mucositis (n = 7, 15.2%), skin toxicity (n = 9, 19.6%), and diarrhea (n = 6, 13.0%) that were manageable with dose reductions. The afatinib dose was reduced in 31 patients (67.4%) and treatment was discontinued in 8 patients (17.4%) due to adverse events. By age (<70 vs ≥70 years), afatinib was dose-reduced in 13 (56.5%) vs 18 patients (78.3%) and discontinued in 3 (13.0%) vs 5 patients (21.7%), respectively. CONCLUSIONS: PFS in our patients was longer than reported in clinical studies with similar response rates and toxicity, even in older patients, reflecting a good risk-benefit from afatinib in patients with Del19-EGFR NSCLC. MICROABSTRACT: This real-world study of first-line afatinib in Caucasian patients with Del19 EGFR NSCLC reported durable efficacy and showed that older patients (> 70 years) benefitted from afatinib as much as younger patients. The safety profile of afatinib was as expected, albeit more dose reductions in older patients. Afatinib may be an option for patients with Del19 EGFR NSCLC, even in those who are older.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Idoso , Adulto , Pessoa de Meia-Idade , Idoso de 80 Anos ou mais , Afatinib/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Receptores ErbB/genética , Estudos Prospectivos , Inibidores de Proteínas Quinases/efeitos adversos , Mutação
8.
Rev Port Cardiol ; 41(10): 853-861, 2022 10.
Artigo em Inglês, Português | MEDLINE | ID: mdl-36207068

RESUMO

INTRODUCTION: Beta-adrenergic receptor blockers (beta-blockers) are frequently used for patients with heart failure (HF) with preserved ejection fraction (HFpEF), although evidence-based recommendations for this indication are still lacking. Our goal was to assess which clinical factors are associated with the prescription of beta-blockers in patients discharged after an episode of HFpEF decompensation, and the clinical outcomes of these patients. METHODS: We assessed 1078 patients with HFpEF and in sinus rhythm who had experienced an acute HF episode to explore whether prescription of beta-blockers on discharge was associated with one-year all-cause mortality or the composite endpoint of one-year all-cause death or HF readmission. We also examined the clinical factors associated with beta-blocker discharge prescription for such patients. RESULTS: At discharge, 531 (49.3%) patients were on beta-blocker therapy. Patients on beta-blockers more often had a prior diagnosis of hypertension and more comorbidity (including ischemic heart disease) and a better functional status, but less often a prior diagnosis of chronic obstructive pulmonary disease. These patients had a lower heart rate on admission and more often used angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, angiotensin receptor-neprilysin inhibitors and loop diuretics. One year after the index admission, 161 patients (15%) had died and 314 (29%) had experienced the composite endpoint. After multivariate adjustment, beta-blocker prescription was not associated with either all-cause mortality (HR=0.83 [95% CI 0.61-1.13]; p=0.236) or the composite endpoint (HR=0.98 [95% CI 0.79-1.23]; p=0.882). CONCLUSION: In patients with HFpEF in sinus rhythm, beta-blocker use was not related to one-year mortality or mortality plus HF readmission.


Assuntos
Insuficiência Cardíaca , Antagonistas Adrenérgicos beta/uso terapêutico , Antagonistas de Receptores de Angiotensina/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Angiotensinas/uso terapêutico , Insuficiência Cardíaca/terapia , Humanos , Neprilisina , Receptores Adrenérgicos beta/uso terapêutico , Inibidores de Simportadores de Cloreto de Sódio e Potássio , Volume Sistólico/fisiologia
9.
Curr Oncol ; 29(10): 7900-7911, 2022 10 18.
Artigo em Inglês | MEDLINE | ID: mdl-36290901

RESUMO

INTRODUCTION: Patients with advanced-stage non-small cell lung cancer (NSCLC) may benefit from a short time-to-treatment (TTT). Predictive biomarker testing is performed prior to treatment, as recommended by various international expert consensus bodies. Genetic testing is more time-intensive than immunohistochemistry (IHC) and commonly contributes to prolonged TTT. For epidermal growth factor receptor-positive patients (EGFR+), further genetic testing may not be required due to the mutual exclusivity of actionable mutations. METHODS: The trial cohort (N = 238) received both BC Cancer NGS panel (Oncopanel) and Idylla EGFR testing. Data were also collected for a control cohort (N = 220) that received Oncopanel testing. For each patient, the time that the lab received the sample, the time taken to report the NGS and Idylla tests, the time of first treatment, and the final treatment regimen were recorded. RESULTS: A concordance frequency of 98.7% (232/235) was observed between the Idylla and NGS panel. The lab turnaround time (TAT) was faster for the Idylla test by an average of 12.4 days (N = 235, p < 0.01). Overall, the average TTT in the trial cohort (N = 114) was 10.1 days faster (p < 0.05) than the control (N = 114), leading to a 25% reduction in TTT. For patients treated based on EGFR positivity, the mean TTT was 16.8 days faster (p < 0.05) in the trial cohort (N = 33) than the control cohort (N = 28), leading to a 48% reduction in TTT. CONCLUSION: Using the Idylla EGFR test as part of the molecular testing repertoire in advanced-stage NSCLC patients could significantly reduce TTT.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Receptores ErbB/genética , Tempo para o Tratamento , Análise Mutacional de DNA
10.
Support Care Cancer ; 30(11): 9163-9170, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36040670

RESUMO

PURPOSE: Cancer is the leading cause of death for Asian Americans. However, few studies have documented supportive care needs from the perspective of Asian American cancer patients. This study describes the needs reported by Asian American patients with colorectal, liver, or lung cancer over a 6-month period during their treatment. METHODS: Participants were recruited through the Greater Bay Area Cancer Registry and from cancer care providers in San Francisco. Participants self-identified as Asian or Asian American; were age 21 or older; spoke English, Chinese, or Vietnamese; and had stage I-III colon, rectum, liver, or lung cancer. Participants were matched with a language concordant patient navigator who provided support during a 6-month period. Needs were assessed by surveys at baseline, 3, and 6 months. RESULTS: Among 24 participants, 58% were 65 years or older, 42% did not complete high school, and 75% had limited English proficiency (LEP). At baseline, the most prevalent needs were cancer information (79%), nutrition and physical activity (67%), language assistance (54%), and daily living (50%). At the 3- and 6-month follow-up surveys, there was a higher reported need for mental health resources and healthcare access among participants. CONCLUSION: In this pilot study of Asian American cancer patients who predominantly had LEP, participants reported many needs, with cancer information and language assistance as the most prominent. The findings highlight the importance of culturally and linguistically appropriate patient navigators in addressing supportive care needs among cancer patients with LEP. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT03867916.


Assuntos
Asiático , Neoplasias Pulmonares , Humanos , Adulto Jovem , Adulto , Asiático/psicologia , Projetos Piloto , Acessibilidade aos Serviços de Saúde , Medidas de Resultados Relatados pelo Paciente
11.
Eur J Cardiothorac Surg ; 62(2)2022 07 11.
Artigo em Inglês | MEDLINE | ID: mdl-35781568

RESUMO

OBJECTIVES: The aim of this study was to evaluate the potential biologic effects caused by the successive placement of biodegradable polydioxanone (PDO) stents in the rabbit trachea. PDO stents could eventually induce a fibroproliferative reaction in the submucosa that could be beneficial in the treatment of malacia due to an increase in its consistency without impairing the tracheal lumen. METHODS: Sixteen adult NZ rabbits were distributed into 3 groups with different survival times according to the number of stents placed: 1 stent (14 weeks), 2 stents (28 weeks) and 3 stents (42 weeks). Stent insertion was performed endoscopically in the cervical trachea of the animal. Histopathological studies included Masson's trichrome staining for submucosal fibrosis and Safranin O to assess the structural integrity of cartilage. Potential inflammatory changes were analysed by means of immunohistochemistry determining the number of CD45-positive cells. RESULTS: Stent placement was successful in every case. Histological studies did not show a statistically significant increase in tracheal wall collagen area and cartilage structure was not modified in those rabbits with 1 or more PDO stents inserted compared to non-stented tracheal sections. Furthermore, no statistically significant changes in the number of CD45+ cells were observed in stented tracheal segments compared to normal tracheal tissues. CONCLUSIONS: According to our data, successive PDO stenting caused mild inflammatory changes in the tracheal wall and no increase in the collagen matrix, and the cartilaginous support was not modified during a long follow-up period (up to 42 weeks). These findings suggest that they may be safe and show good biocompatibility in the long term.


Assuntos
Polidioxanona , Traqueia , Implantes Absorvíveis , Animais , Polidioxanona/química , Coelhos , Stents/efeitos adversos , Traqueia/cirurgia
12.
Int J Pediatr Otorhinolaryngol ; 144: 110690, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33799103

RESUMO

BACKGROUND/PURPOSE: The aims of this study were to describe our experience in the management of FB aspiration in children, focusing on the eventual association between delay in treatment and the development of complications, and to determine if the incidence of this emergency had decreased in the last 10 years. METHODS: Retrospective study of children with a diagnosis of FB aspiration managed between 1999 and 2019 at a tertiary care referral hospital. The following data were collected: demographics, clinical presentation, radiological findings, endoscopic technique, type of FB, time elapsed between the aspiration episode and treatment, and complications. Main outcome measures were the rate of complications (intraoperative and long-term) in the cohort of patients with delay in treatment (>72 h), and the incidence of FB aspiration in each of the two historical subgroups of the study. RESULTS: The study included 130 patients, 66.2% male, with a median age of 24 months. Cough was the most frequent symptom (76.1%) and unilateral air trapping was the most common radiological finding (48.8%). Removal of FB was performed with rigid bronchoscopy in every case. The most common type of FB was organic (73%) and located in the right bronchial system (47.7%). The global rate of complications was 16.1%. Patients with a delay in treatment beyond 72 h from the aspiration episode showed a statistically significant risk of developing both intraoperative and postoperative complications. Additionally, we have stated that the incidence of FB aspiration in our community has decreased by 44.4% in the last 10 years. CONCLUSIONS: The incidence of FB aspiration has remarkably decreased in our environment in the last decade. Delay in treatment placed our patients at a significant higher risk of developing complications both during the bronchoscopic procedure and in the long-term.


Assuntos
Corpos Estranhos , Brônquios , Broncoscopia , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Corpos Estranhos/complicações , Corpos Estranhos/epidemiologia , Corpos Estranhos/cirurgia , Humanos , Incidência , Lactente , Masculino , Estudos Retrospectivos
14.
ACS Appl Bio Mater ; 4(6): 4789-4799, 2021 06 21.
Artigo em Inglês | MEDLINE | ID: mdl-35007028

RESUMO

Hepatocellular carcinoma (HCC) is the sixth most common neoplasia and the fourth most common cause of cancer-related mortality worldwide. Sorafenib is the first-line molecular therapy for patients in an advanced stage of HCC. However, the recommended clinical dose of Sorafenib is associated with several complications, which derive from its lack of cell specificity and its very low water solubility. To circumvent these drawbacks, in the present study we developed two sugar-coated polydiacetylene-based nanomicelles-Sorafenib carriers targeting mannose and asialoglycoprotein receptors (MR and ASGPR, respectively). The strategies allowed the inducement of apoptosis and reduction of cell proliferation at a nanomolar, instead of micromolar, range in liver cancer cells. The study showed that, contrary to literature data, Sorafenib included into the pMicMan (Man = mannose) vector (targeting MR) is more efficient than pMicGal (Gal = galactose) (targeting ASGPR). Indeed, pMicMan increased the endosomal incorporation with an increased intracellular Sorafenib concentration that induced apoptosis and reduced cell proliferation at a low concentration range (10-20 nM).


Assuntos
Antineoplásicos/administração & dosagem , Carcinoma Hepatocelular/tratamento farmacológico , Galactose/administração & dosagem , Neoplasias Hepáticas/tratamento farmacológico , Manose/administração & dosagem , Nanopartículas/administração & dosagem , Polímero Poliacetilênico/administração & dosagem , Sorafenibe/administração & dosagem , Antineoplásicos/química , Apoptose/efeitos dos fármacos , Receptor de Asialoglicoproteína/metabolismo , Carcinoma Hepatocelular/metabolismo , Proliferação de Células/efeitos dos fármacos , Endossomos/metabolismo , Galactose/química , Células Hep G2 , Humanos , Neoplasias Hepáticas/metabolismo , Manose/química , Receptor de Manose/metabolismo , Micelas , Nanopartículas/química , Polímero Poliacetilênico/química , Sorafenibe/química
15.
Rev. argent. microbiol ; 52(4): 61-70, dic. 2020. graf
Artigo em Inglês | LILACS | ID: biblio-1340921

RESUMO

Resumen La demanda de xilanasas fúngicas en los procesos biotecnológicos industriales muestra un claro aumento en todo el mundo, por lo que hay un interés en ajustar las condiciones de producción de xilanasas microbianas. En este estudio se optimizó la capacidad del hongo Fusarium solani para producir xilanasas extracelulares con escasa actividad celulolítica mediante el diseño de Box-Wilson. Se determinaron las mejores condiciones de cultivo para obtener una preparación enzimática cruda con una actividad xilanolítica significativa y poca actividad celulolítica. En la mayoría de los tratamientos, la actividad xilanolítica fue mayor que la actividad celulolítica. Se observó un efecto negativo sobre la producción de endoxilanasas, p-xilosidasasy endocelulasascon el aumento de la concentración dexilano. El aumento del tiempo de incubación afectó adversamente la producción de endocelulasas y p-xilosidasas. De acuerdo con el modelo matemático y las pruebas experimentales, es posible producir endoxilanasas con una actividad endocelulasa mínima aumentando el tiempo de incubación y la concentración de sulfato de amonio. Las condiciones de cultivo óptimas para producir una mayor cantidad de endoxilanasas (10,65 U/mg) y mínima cantidad de endocelulasas fueron 2,5% (p/v) de xilano y 5, 2 y 0,4 g/l de extracto de levadura, sulfato de amonio y urea, respectivamente, con 120 h de incubación.


Resumen La demanda de xilanasas fúngicas en los procesos biotecnológicos industriales muestra un claro aumento en todo el mundo, por lo que hay un interés en ajustar las condicionesde producción de xilanasas microbianas. En este estudio se optimizó la capacidad del hongo Fusarium solani para producir xilanasas extracelulares con escasa actividad celulolítica medi-ante el dise˜no de Box-Wilson. Se determinaron las mejores condiciones de cultivo para obteneruna preparación enzimática cruda con una actividad xilanolítica significativa y poca actividad celulolítica. En la mayoría de los tratamientos, la actividad xilanolítica fue mayor que laactividad celulolítica. Se observó un efecto negativo sobre la producción de endoxilanasas, xylanolytic activity and little cellulolytic activity. In most treatments, the xylanolytic activity was higher than the cellulolytic activity. A negative effect on the production of endoxylanases, p-xylosidases and endocellulases was observed with the increasing of xylan concentration. Increasing the incubation time adversely affected the production of endocellulases and p-xylosidases. According to the mathematical model and experimental tests, it is possible to produce endoxylanases with minimal endocellulase activity increasing incubation time and the concentration of ammonium sulfate. The optimal culture conditions to produce a greater amount of endoxylanases (10.65 U/mg) and low endocellulases from F. solani were: 2.5% (w/v) xylan, 5.0, 2.0 and 0.4g/l, of yeast extract, ammonium sulfate and urea, respectively, with 120 h of incubation.


Assuntos
Celulases , Endo-1,4-beta-Xilanases/biossíntese , Fermentação , Projetos de Pesquisa , Microbiologia Industrial , Fusarium , Concentração de Íons de Hidrogênio
16.
Rev. colomb. ciencias quim. farm ; 49(3): 740-758, Sep.-Dec. 2020. tab
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1156314

RESUMO

RESUMEN Objetivo: Conocer la prevalencia de enfermedades según el grupo sanguíneo de la población estudiada en la provincia de Cuenca (España). Métodos: Estudio observacional, descriptivo, corte transversal y base poblacional. La muestra de 73 personas (39 varones, 34 mujeres), mayores de 60 años. Se identificaron todos los grupos sanguíneos, estudiándolos por edad y género. Resultados: Los porcentajes de grupos sanguíneos de la población estudiada por género son 42,6% (grupo A); 42,4% (O); 13% (B) y 1,4% (AB). Predomina el A+ (35,6%), seguido del O+ (27,4%). Se estudia la prevalencia de una determinada enfermedad en función del grupo sanguíneo. En este sentido, se detectan diferencias dentro de un mismo grupo, según el fator Rh. Los grupos Rh positivos padecen más de HTA, insomnio y depresión que los Rh negativos. Los grupos A y O padecen mayor aumento de colesterol que los del grupo B. Los del grupo O tienen más HTA que el resto y el O+ padece mayor porcentaje de anemia (Fe), mientras que los A+ anemia (B12). La osteoporosis es mayor en los grupos negativos que en los positivos, salvo en el grupo AB+. Conclusiones: El grupo sanguíneo con el que nacemos puede condicionar las enfermedades que padeceremos a lo largo de nuestra vida. El ser 0 podría predisponerlos a tener HTA, anemia (Fe), colesterol, enfermedades pulmonares e insomnio, mientras que el A depresión, anemia (B12) y problemas de próstata en varones.


SUMMARY Objective: To know the prevalence of diseases according to the blood group of the population studied in the province of Cuenca (Spain). Methods: An observational, descriptive, cross-sectional, and population-based study. The sample is 73 people (39 men and 34 women), over 60 years. All blood groups were identified, studying them by age and gender. Results: The percentages of blood groups of the population studied by gender are 42.6% (group A), 42.4% (O), 13% (B) and 1.4% (AB). A+ predominates (35.6%), followed by O+ (27.4%).The prevalence of a certain disease based on blood group is studied. In this sense, differences are detected within the same group, according to the Rh factor. Rh positive groups suffer more from hypertension, insomnia and depression than Rh negative groups. Groups A and 0 O suffer a greater increase in cholesterol than those of group B. Those in group 0 O have more hypertension than the rest and the 0O + suffer a higher percentage of anemia (Fe), while those A + anemia (B12). Osteoporosis is greater in the negative groups than in the positive ones, except in the AB + group. Conclusions: The blood group with which we are born can condition the diseases that we will suffer throughout our lives. Being 0 could predispose them to have hypertension, anemia (Fe), cholesterol, lung diseases and insomnia, while A could predispose them to have depression, anemia (B12) and prostate problems in men.

17.
Front Immunol ; 11: 538240, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33193307

RESUMO

Dengue virus infection (DENV-2) is transmitted by infected mosquitoes via the skin, where many dermal and epidermal cells are potentially susceptible to infection. Most of the cells in an area of infection will establish an antiviral microenvironment to control viral replication. Although cumulative studies report permissive DENV-2 infection in dendritic cells, keratinocytes, and fibroblasts, among other cells also infected, little information is available regarding cell-to-cell crosstalk and the effect of this on the outcome of the infection. Therefore, our study focused on understanding the contribution of fibroblast and dendritic cell crosstalk to the control or promotion of dengue. Our results suggest that dendritic cells promote an antiviral state over fibroblasts by enhancing the production of type I interferon, but not proinflammatory cytokines. Infected and non-infected fibroblasts promoted partial dendritic cell maturation, and the fibroblast-matured cells were less permissive to infection and showed enhanced type I interferon production. We also observed that the soluble mediators produced by non-infected or Poly (I:C) transfected fibroblasts induced allogenic T cell proliferation, but mediators produced by DENV-2 infected fibroblasts inhibited this phenomenon. Additionally, the effects of fibroblast soluble mediators on CD14+ monocytes were analyzed to assess whether they affected the differentiation of monocyte derived dendritic cells (moDC). Our data showed that mediators produced by infected fibroblasts induced variable levels of monocyte differentiation into dendritic cells, even in the presence of recombinant GM-CSF and IL-4. Cells with dendritic cell-like morphology appeared in the culture; however, flow cytometry analysis showed that the mediators did not fully downregulate CD14 nor did they upregulate CD1a. Our data revealed that fibroblast-dendritic cell crosstalk promoted an antiviral response mediated manly by type I interferons over fibroblasts. Furthermore, the maturation of dendritic cells and T cell proliferation were promoted, which was inhibited by DENV-2-induced mediators. Together, our results suggest that activation of the adaptive immune response is influenced by the crosstalk of skin resident cells and the intensity of innate immune responses established in the microenvironment of the infected skin.


Assuntos
Comunicação Celular/imunologia , Células Dendríticas/imunologia , Vírus da Dengue/imunologia , Dengue/imunologia , Derme/imunologia , Fibroblastos/imunologia , Adulto , Antígenos CD1/imunologia , Células Dendríticas/patologia , Células Dendríticas/virologia , Dengue/patologia , Derme/patologia , Derme/virologia , Feminino , Fibroblastos/patologia , Fibroblastos/virologia , Fator Estimulador de Colônias de Granulócitos e Macrófagos/imunologia , Humanos , Interferon Tipo I/imunologia , Interleucina-4/imunologia , Receptores de Lipopolissacarídeos/imunologia , Masculino , Pessoa de Meia-Idade
18.
Clin Epidemiol ; 12: 31-40, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32021469

RESUMO

BACKGROUND: Cancer treatment and outcomes can be influenced by tumor characteristics, patient overall health status, and comorbidities. While previous studies have analyzed the influence of comorbidity on cancer outcomes, limited information is available regarding factors associated with the increased prevalence of comorbidities and multimorbidity among patients with colorectal cancer in Spain. PATIENTS AND METHODS: This cross-sectional study obtained data from all colorectal cancer cases diagnosed in two Spanish provinces in 2011 from two population-based cancer registries and electronic health records. We calculated the prevalence of comorbidities according to patient and tumor factors, identified factors associated with an increased prevalence of comorbidity and multimorbidity, analyzed the association between comorbidities and time-to-surgery, and developed an interactive web application (https://comcor.netlify.com/). RESULTS: The most common comorbidities were diabetes (23.6%), chronic obstructive pulmonary disease (17.2%), and congestive heart failure (14.5%). Among all comorbidities, 52% of patients were diagnosed at more advanced stages (stage III/IV). Patients with advanced age, restricted performance status or who were disabled, obese, and smokers had a higher prevalence of multimorbidity. Patients with multimorbidity had a longer time-to-surgery than those without comorbidity (17 days, 95% confidence interval: 3-29 days). CONCLUSION: We identified a consistent pattern of factors associated with a higher prevalence of comorbidities and multimorbidity at diagnosis and an increased time-to-surgery among patients with colorectal cancer with multimorbidity in Spain. This pattern may provide insights for further etiological and preventive research and help to identify patients at a higher risk for poorer cancer outcomes and suboptimal treatment.

19.
Med Res Rev ; 39(1): 70-113, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-29785785

RESUMO

Since reprogramming energy metabolism is considered a new hallmark of cancer, tumor metabolism is again in the spotlight of cancer research. Many studies have been carried out and many possible therapies have been developed in the last years. However, tumor cells are not alone. A series of extracellular components and stromal cells, such as endothelial cells, cancer-associated fibroblasts, tumor-associated macrophages, and tumor-infiltrating T cells, surround tumor cells in the so-called tumor microenvironment (TME). Metabolic features of these cells are being studied in deep in order to find relationships between metabolism within the TME and tumor progression. Moreover, it cannot be forgotten that tumor growth is able to modulate host metabolism and homeostasis, so that TME is not the whole story. Importantly, the metabolic switch in cancer is just a consequence of the flexibility and adaptability of metabolism and should not be surprising. Treatments of cancer patients with combined therapies including antitumor agents with those targeting stromal cell metabolism, antiangiogenic drugs, and/or immunotherapy are being developed as promising therapeutics.


Assuntos
Progressão da Doença , Terapia de Alvo Molecular , Neoplasias/metabolismo , Neoplasias/patologia , Microambiente Tumoral , Glicólise , Humanos , Modelos Biológicos
20.
PeerJ ; 5: e4074, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29226032

RESUMO

BACKGROUND: The corallum is crucial in building coral reefs and in diagnosing systematic relationships in the order Scleractinia. However, molecular phylogenetic analyses revealed a paraphyly in a majority of traditional families and genera among Scleractinia showing that other biological attributes of the coral, such as polyp morphology and reproductive traits, are underutilized. Among scleractinian genera, the Euphyllia, with nine nominal species in the Indo-Pacific region, is one of the groups that await phylogenetic resolution. Multiple genetic markers were used to construct the phylogeny of six Euphyllia species, namely E. ancora, E. divisa, E. glabrescens, E. paraancora, E. paradivisa, and E. yaeyamaensis. The phylogeny guided the inferences on the contributions of the colony structure, polyp morphology, and life history traits to the systematics of the largest genus in Euphyllidae (clade V) and, by extension, to the rest of clade V. RESULTS: Analyses of cytochrome oxidase 1 (cox1), cytochrome b (cytb), and ß-tubulin genes of 36 colonies representing Euphyllia and a confamilial species, Galaxea fascicularis, reveal two distinct groups in the Euphyllia that originated from different ancestors. Euphyllia glabrescens formed a separate group. Euphyllia ancora, E. divisa, E. paraancora, E. paradivisa, and E. yaeyamaensis clustered together and diverged from the same ancestor as G. fascicularis. The 3'-end of the cox1 gene of Euphyllia was able to distinguish morphospecies. DISCUSSION: Species of Euphyllia were traditionally classified into two subgenera, Euphyllia and Fimbriaphyllia, which represented a dichotomy on colony structure. The paraphyletic groups retained the original members of the subgenera providing a strong basis for recognizing Fimbriaphyllia as a genus. However, colony structure was found to be a convergent trait between Euphyllia and Fimbriaphyllia, while polyp shape and length, sexuality, and reproductive mode defined the dichotomy better. Species in a genus are distinguished by combining polyp morphology and colony form. The cluster of E. glabrescens of the Euphyllia group is a hermaphroditic brooder with long, tubular tentacles with knob-like tips, and a phaceloid colony structure. The Fimbriaphyllia group, with F. paraancora, F. paradivisa, F. ancora, F. divisa, and F. yaeyamaensis, are gonochoric broadcast spawners with short polyps, mixed types of tentacle shapes, and a phaceloid or flabello-meandroid skeleton. Soft-tissue morphology of G. fascicularis and Ctenella chagius were found to be consistent with the dichotomy. CONCLUSIONS: The paraphyly of the original members of the previous subgenera justify recognizing Fimbriaphyllia as a genus. The integrated approach demonstrates that combining polyp features, reproductive traits, and skeletal morphology is of high systematic value not just to Euphyllia and Fimbriaphyllia but also to clade V; thus, laying the groundwork for resolving the phylogeny of clade V.

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