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1.
Dermatol Online J ; 29(1)2023 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-37040911

RESUMEN

Collodion baby is usually a manifestation of autosomal recessive congenital ichthyosis, a heterogeneous group of congenital hyperkeratotic genodermatoses with highly variable severity and genetic background. Herein, we report a case of self-improving collodion ichthyosis, a rare subtype of autosomal recessive congenital ichthyosis, characterized by an almost-complete spontaneous resolution of symptoms.


Asunto(s)
Ictiosis Lamelar , Ictiosis , Lactante , Humanos , Colodión , Ictiosis Lamelar/diagnóstico , Ictiosis/genética , Araquidonato 12-Lipooxigenasa/genética
2.
Oral Radiol ; 39(3): 455-466, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37058184

RESUMEN

The objective of this work was to perform an integrative review of the inspection of peri-implant bone defects using cone beam computed tomography (CBCT). An electronic search was performed in the PubMed database using the following scientific terms: CBCT or Cone Beam computed tomography; dental implant; peri-implant; bone loss; defects. The survey identified 267 studies, of which 18 were considered relevant to this study. These studies provided important data taking into account the accuracy of cone beam computed tomography in the detection and measurement of peri-implant bone defects such as fenestrations, dehiscence and intraosseous circumferential defects. The effectiveness of CBCT in aiding in geometric bone calculations and in the diagnosis of peri-implant defects was influenced by factors such as artefacts, defect size, bone wall thickness, implant material, adjustment of acquisition parameters and observer experience. A not insignificant number of studies compared intraoral radiography to CBCT in the detection of peri-implant bone loss. CBCT was clearly superior to intraoral radiography in the detection of all peri-implant bone defects, except for defects located in the interproximal zone. In general, studies have shown that peri-implant bone measurements adjacent to the implant surface can be correctly determined, as well as the diagnosis of peri-implant bone defects with an average discrepancy of less than 1 mm from the actual measurement of the defect.


Asunto(s)
Tomografía Computarizada de Haz Cónico Espiral , Tomografía Computarizada de Haz Cónico/métodos , Huesos , Artefactos
3.
Prim Care Diabetes ; 17(2): 113-118, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36737358

RESUMEN

BACKGROUND AND AIMS: Type 2 Diabetes Mellitus is known to be linked to malfunctioning antiviral defense; however, its association with the severity of monkeypox is poorly understood. In this review, we discuss key immunological mechanisms in the antiviral response affected by poor glucose control that could impact the susceptibility and severity of monkeypox infection, leading to a heightened emphasis on the use of the available antidiabetic drugs. METHODS: We searched PubMed and Google scholar for articles published from January 1985 to August 2022. No criteria for publication data were set, and all articles in English were included. RESULTS: Currently, there are no studies about the risk or consequences of monkeypox infection in the diabetic population. A high incidence of diabetes is reported in countries such as China, India, Pakistan, EUA, Indonesia, Brazil, Mexico, Bangladesh, Japan, and Egypt, where unfortunately imported cases of monkeypox have been reported and the infection continues to spread. CONCLUSIONS: High incidence of diabetes together with the cessation of smallpox vaccination has left large numbers of the human population unprotected against monkeypox. The best option for the population remains confined to the prevention of infection as well as the use of hypoglycemic agents that have also been shown to improve immune mechanisms associated with viral protection.


Asunto(s)
COVID-19 , Diabetes Mellitus Tipo 2 , Mpox , Humanos , Mpox/tratamiento farmacológico , Mpox/epidemiología , Mpox/prevención & control , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Diabetes Mellitus Tipo 2/epidemiología , Antivirales/efectos adversos , Hipoglucemiantes/uso terapéutico
4.
Artículo en Inglés | MEDLINE | ID: mdl-36427802

RESUMEN

AIM: Our aim was to analyse the performance of [11C]choline PET/CT in prostate cancer (PCa) surveillance, especially in patients with prostate specific antigen (PSA) < 1 ng/mL. MATERIAL AND METHODS: Three hundred and twenty-nine [11C]choline PET/CT examinations from 191 patients (68.2 ±â€¯7.2 years) submitted for PCa surveillance or biochemical recurrence were retrospectively evaluated. PSA at study was 13.0 ±â€¯84.2 ng/mL. Main initial treatment was radical prostatectomy (RP) in 81 patients, and other treatments (radiotherapy, chemotherapy, hormonotherapy) in 110. PET/CT was acquired 20' after injection of 555-740 MBq of [11C]choline. Minimum follow-up was 12 months. RESULTS: Two hundred and nineteen (66.6%) out of the 329 PET/CT examinations were positive. The percentage of positive examinations was significantly higher in patients with other initial treatment than RP compared to patients with RP (85.6% vs. 43.6%, respectively). One hundred and thirty PET/CT (59.4%) showed local recurrence, 48 (21.9%) distant recurrence, and 41 (18.7%) local plus distant recurrence. Initial therapeutic approach was changed in 139 cases (63.5%). In the subgroup of 81 [11C]choline PET/CT scans performed with PSA < 1 ng/mL, 23 (28.4%) showed a positive result. Initial therapeutic approach was changed in 9 (11.1%). Three (4.8%) out of 63 patients died as per PCa. CONCLUSION: [11C]choline PET/CT demonstrated its effectiveness in PCa surveillance and restaging, even in patients with serum PSA < 1 ng/mL. The diagnostic performance was different depending on the initial treatment, been higher in patients with non-surgical treatment.


Asunto(s)
Tomografía Computarizada por Tomografía de Emisión de Positrones , Neoplasias de la Próstata , Humanos , Masculino , Colina , Antígeno Prostático Específico , Estudios Retrospectivos , Radioisótopos de Carbono , Persona de Mediana Edad , Anciano
5.
For Pathol ; 52(4): e12749, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36247020

RESUMEN

The effect of inoculation with Fusarium circinatum on survival of seed and seedlings of 19 populations of Pinus sylvestris was examined under environmentally controlled conditions, with four treatments (0, 50, 103, 106 spores ml-1). A single seed source of P. radiata was included as a positive control. Germination (emergence of the plumule above the compost) and health of seedlings was assessed daily, for 85 days. Spore density had a significant effect on germination: at 50 spores ml-1, only germination of a Northeast Scotland population was reduced. Treatment with 1000 spores ml-1, however, reduced germination of six populations of P. sylvestris and of P. radiata. Survival of emerged seedlings also varied with inoculum dose. Approximately 75% of seedlings survived 85 days after germination after inoculation with 50 spores ml-1. Seedlings of all populations were killed within 12-16 days of germination by the 103 and 106 spores ml-1 treatments. Emerged seedlings of the Austrian populations showed the highest susceptibility to F. circinatum following treatment with 50 spores ml-1, although 15% of seedlings of one Austrian population (AU3) survived to the end of the experiment (85 days after germination). There was no clear pattern in survival rates of the P. sylvestris seedlings from other populations treated with 1000 or 1 million spores ml-1 due to death of all emerged seedlings within a short period. Variations in susceptibility of different populations of P. sylvestris to F. circinatum may be used in future selection and breeding programmes to reduce the impact of the pathogen as it spreads over wider areas in Europe and Eurasia.

6.
Ultrasound Obstet Gynecol ; 59(2): 202-208, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34664753

RESUMEN

OBJECTIVE: In addition to the lungs, the placenta and the endothelium can be affected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Soluble fms-like tyrosine kinase-1 (sFlt-1) and placental growth factor (PlGF) are markers of endothelial dysfunction and could potentially serve as predictors of severe coronavirus disease 2019 (COVID-19). We aimed to investigate the association of serum concentrations of sFlt-1 and PlGF with the severity of COVID-19 in pregnancy. METHODS: This was a prospective cohort study carried out in a tertiary care hospital in Mexico City, Mexico. Symptomatic pregnant women with a positive reverse-transcription quantitative polymerase chain reaction test for SARS-CoV-2 infection who fulfilled the criteria for hospitalization were included. The primary outcome was severe pneumonia due to COVID-19. Secondary outcomes were intensive care unit (ICU) admission, viral sepsis and maternal death. sFlt-1 levels were expressed as multiples of the median (MoM). The association between sFlt-1 and each adverse outcome was explored by logistic regression analysis, adjusted for gestational age for outcomes occurring in more than five patients, and the predictive performance was assessed by receiver-operating-characteristics-curve analysis. RESULTS: Among 113 pregnant women with COVID-19, higher sFlt-1 MoM was associated with an increased probability of severe pneumonia (adjusted odds ratio (aOR), 1.817 (95% CI, 1.365-2.418)), ICU admission (aOR, 2.195 (95% CI, 1.582-3.047)), viral sepsis (aOR, 2.318 (95% CI, 1.407-3.820)) and maternal death (unadjusted OR, 5.504 (95% CI, 1.079-28.076)). At a 10% false-positive rate, sFlt-1 MoM had detection rates of 45.2%, 66.7%, 83.3% and 100% for severe COVID-19 pneumonia, ICU admission, viral sepsis and maternal death, respectively. PlGF values were similar between women with severe and those with non-severe COVID-19 pneumonia. CONCLUSION: sFlt-1 MoM is higher in pregnant women with severe COVID-19 and has the capability to predict serious adverse pregnancy events, such as severe pneumonia, ICU admission, viral sepsis and maternal death. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.


Asunto(s)
COVID-19 , Unidades de Cuidados Intensivos/estadística & datos numéricos , Neumonía Viral , Complicaciones Infecciosas del Embarazo , Receptor 1 de Factores de Crecimiento Endotelial Vascular/sangre , Adulto , COVID-19/sangre , COVID-19/diagnóstico , COVID-19/epidemiología , COVID-19/terapia , Estudios de Cohortes , Endotelio Vascular/metabolismo , Endotelio Vascular/fisiopatología , Femenino , Edad Gestacional , Humanos , México/epidemiología , Mortalidad , Placenta/metabolismo , Placenta/fisiopatología , Factor de Crecimiento Placentario/sangre , Neumonía Viral/diagnóstico , Neumonía Viral/epidemiología , Neumonía Viral/etiología , Embarazo , Complicaciones Infecciosas del Embarazo/sangre , Complicaciones Infecciosas del Embarazo/diagnóstico , Complicaciones Infecciosas del Embarazo/epidemiología , Complicaciones Infecciosas del Embarazo/terapia , SARS-CoV-2/aislamiento & purificación , Índice de Severidad de la Enfermedad
7.
Sci Total Environ ; 818: 151854, 2022 Apr 20.
Artículo en Inglés | MEDLINE | ID: mdl-34826482

RESUMEN

A recent paper by Beretta-Blanco and Carrasco-Letelier (2021) claims that agricultural eutrophication is not one of the main causes for cyanobacterial blooms in rivers and artificial reservoirs. By combining rivers of markedly different hydrological characteristics e.g., presence/absence and number of dams, river discharge and geological setting, the study speculates about the role of nutrients for modulating phytoplankton chlorophyll-a. Here, we identified serious flaws, from erratic and inaccurate data manipulation. The study did not define how erroneous original dataset values were treated, how the variables below the detection/quantification limit were numerically introduced, lack of mandatory variables for river studies such as flow and rainfall, arbitrary removal of pH > 7.5 values (which were not outliers), and finally how extreme values of other environmental variables were included. In addition, we identified conceptual and procedural mistakes such as biased construction/evaluation of model prediction capability. The study trained the model using pooled data from a short restricted lotic section of the (large) Uruguay River and from both lotic and reservoir domains of the Negro River, but then tested predictability within the (small) Cuareim River. Besides these methodological considerations, the article shows misinterpretations of the statistical correlation of cause and effect neglecting basic limnological knowledge of the ecology of harmful algal blooms (HABs) and international research on land use effects on freshwater quality. The argument that pH is a predictor variable for HABs neglects overwhelming basic paradigms of carbon fluxes and change in pH because of primary productivity. As a result, the article introduces the notion that HABs formation are not related to agricultural land use and water residence time and generate a great risk for the management of surface waterbodies. This reply also emphasizes the need for good practices of open data management, especially for public databases in view of external reproducibility.


Asunto(s)
Negro o Afroamericano , Ríos , Monitoreo del Ambiente , Eutrofización , Floraciones de Algas Nocivas , Humanos , Fósforo/análisis , Reproducibilidad de los Resultados , Uruguay
8.
Med Oral Patol Oral Cir Bucal ; 26(6): e719-e728, 2021 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-34704983

RESUMEN

BACKGROUND: The Spindle Assembly Checkpoint (SAC) is a surveillance mechanism essential to ensure the accuracy of chromosome segregation during mitosis. Our aim was to evaluate the expression of SAC proteins in oral carcinogenesis, and to assess their potential in predicting malignant transformation of oral leukoplakia. MATERIAL AND METHODS: We analysed the immunoexpression of BubR1, Mad2, Bub3, and Spindly proteins in 64 oral biopsies from 52 oral leukoplakias and 12 normal tissues. Univariate and multivariate analysis were performed to evaluate predictive factors for malignant transformation (MT). RESULTS: We observed that BubR1 and Mad2 were more highly expressed in high dysplasia grade lesions than in low grade or normal tissues (P<0.05). High expression of Spindly was significantly correlated with a high Ki-67 score (P=0.004). Six (11.5%) oral leukoplakias underwent malignant transformation. In univariate analysis, the binary dysplasia grade (high grade) (P<0.001) was associated with a higher risk of malignant transformation as well as high BubR1 (P<0.001) and high Mad2 (P=0.013) expression. In multivariate analysis, high expression of BubR1 and Mad2 when combined showed an increased risk for malignant transformation (P=0.013; HR of 4.6, 95% CI of 1.4-15.1). CONCLUSIONS: Our findings reveal that BubR1 and Mad2 were associated with an increased risk for malignant transformation independently of histological grade and could be potential and useful predictive risk markers of malignant transformation in oral leukoplakias.


Asunto(s)
Transformación Celular Neoplásica , Puntos de Control de la Fase M del Ciclo Celular , Biomarcadores , Humanos , Leucoplasia Bucal , Proteínas Mad2/genética
9.
Dermatol Online J ; 27(6)2021 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-34387066

RESUMEN

Basaloid follicular hamartoma (BFH) is a rare follicular hamartoma of benign nature, which should be part of the differential diagnoses of basal cell carcinoma. Familial multiple BFH (FMBFH) is a hereditary subtype which typically presents early in life with multiple small, skin-colored papules primarily on the central face. Although these lesions are usually asymptomatic, they can be cosmetically disfiguring. Treatment options include surgery, cryotherapy, CO2 laser and imiquimod; no standard of care has been determined. We present a case of FMBFH presenting in adulthood, which was treated with CO2 laser with satisfactory results.


Asunto(s)
Dermatosis Facial/patología , Hamartoma/patología , Adulto , Femenino , Humanos
10.
Biomed Pharmacother ; 142: 112054, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34463267

RESUMEN

The main obstacle in the treatment of cancer patients has been resistance to multiple drugs, leading to the need to develop molecules with a higher specificity target. The liposomal formulation DODAC/2-AEH2P has antitumor potential, inducing apoptosis in several tumor types. Human chronic myeloid leukemia K-562 and K-562 Lucena (MDR+) cells were treated with the DODAC carrier and the liposomal formulation 2-AEH2P. Viability, cell cycle phases, apoptosis, marker expression and mitochondrial potential were analyzed. Significant reduction in viability was observed for all treatments. Changes in the distribution of the cell cycle phases and expression of markers involved in the apoptosis pathways were observed. Reduction of the mitochondrial electrical potential mediated by Bcl-2, being regulated by the reduction of the MTCH2 protein linked to the progression of myeloid leukemia and an increase in the pro-apoptotic proteins Bad and Bax, dependent on p53. This study demonstrated a significant therapeutic potential through apoptotic effects in leukemic cells, regardless of the molecular resistance profile (MDR+).


Asunto(s)
Antineoplásicos/farmacología , Proliferación Celular/efectos de los fármacos , Leucemia Mielógena Crónica BCR-ABL Positiva/tratamiento farmacológico , Organofosfatos/farmacología , Apoptosis/efectos de los fármacos , Proteínas Reguladoras de la Apoptosis/metabolismo , Ciclo Celular/efectos de los fármacos , Muerte Celular/efectos de los fármacos , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Resistencia a Múltiples Medicamentos/efectos de los fármacos , Sinergismo Farmacológico , Humanos , Leucemia Mielógena Crónica BCR-ABL Positiva/patología , Liposomas/química , Liposomas/farmacología , Potencial de la Membrana Mitocondrial/efectos de los fármacos , Ácidos Oléicos/química , Ácidos Oléicos/farmacología , Compuestos de Amonio Cuaternario/química , Compuestos de Amonio Cuaternario/farmacología
11.
Sci Rep ; 11(1): 929, 2021 01 13.
Artículo en Inglés | MEDLINE | ID: mdl-33441710

RESUMEN

The present study used 16S rRNA gene amplicon sequencing to assess the impact on salivary microbiome of different grades of dental and periodontal disease and the combination of both (hereinafter referred to as oral disease), in terms of bacterial diversity, co-occurrence network patterns and predictive models. Our scale of overall oral health was used to produce a convenience sample of 81 patients from 270 who were initially recruited. Saliva samples were collected from each participant. Sequencing was performed in Illumina MiSeq with 2 × 300 bp reads, while the raw reads were processed according to the Mothur pipeline. The statistical analysis of the 16S rDNA sequencing data at the species level was conducted using the phyloseq, DESeq2, Microbiome, SpiecEasi, igraph, MixOmics packages. The simultaneous presence of dental and periodontal pathology has a potentiating effect on the richness and diversity of the salivary microbiota. The structure of the bacterial community in oral health differs from that present in dental, periodontal or oral disease, especially in high grades. Supragingival dental parameters influence the microbiota's abundance more than subgingival periodontal parameters, with the former making a greater contribution to the impact that oral health has on the salivary microbiome. The possible keystone OTUs are different in the oral health and disease, and even these vary between dental and periodontal disease: half of them belongs to the core microbiome and are independent of the abundance parameters. The salivary microbiome, involving a considerable number of OTUs, shows an excellent discriminatory potential for distinguishing different grades of dental, periodontal or oral disease; considering the number of predictive OTUs, the best model is that which predicts the combined dental and periodontal status.


Asunto(s)
Enfermedades de la Boca/microbiología , Enfermedades Periodontales/microbiología , Saliva/microbiología , Adulto , Bacterias/genética , ADN Bacteriano/genética , ADN Ribosómico/genética , Servicios de Salud Dental , Femenino , Estado de Salud , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Masculino , Microbiota , Persona de Mediana Edad , Salud Bucal/estadística & datos numéricos , ARN Ribosómico 16S/genética
12.
Dev Comp Immunol ; 114: 103823, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-32800901

RESUMEN

Lectins are ubiquitous proteins involved in the immune defenses of different organisms and mainly responsible for non-self-recognition and agglutination reactions. This work describes molecular and biological characterization of a rhamnose-binding lectin (RBL) from Rhodnius prolixus, which possesses a 21 amino acid signal peptide and a mature protein of 34.6 kDa. The in-silico analysis of the primary and secondary structures of RpLec revealed a lectin domain fully conserved among previous insects studied. The three-dimensional homology model of RpLec was similar to other RBL-lectins. Docking predictions with the monosaccharides showed rhamnose and galactose-binding sites comparable to Latrophilin-1 and N-Acetylgalactosamine-binding in a different site. The effects of RpLec gene silencing on levels of infecting Trypanosoma cruzi Dm 28c and intestinal bacterial populations in the R. prolixus midgut were studied by injecting RpLec dsRNA into the R. prolixus hemocoel. Whereas T. cruzi numbers remained unchanged compared with the controls, numbers of bacteria increased significantly. The silencing also induced the up regulation of the R. prolixus defC (defensin) expression gene. These results with RpLec reveal the potential importance of this little studied molecule in the insect vector immune response and homeostasis of the gut bacterial microbiota.


Asunto(s)
Enfermedad de Chagas/inmunología , Defensinas/administración & dosificación , Microbioma Gastrointestinal/genética , Proteínas de Insectos/genética , Lectinas/metabolismo , Rhodnius/fisiología , Trypanosoma cruzi/fisiología , Animales , Defensinas/metabolismo , Vectores de Enfermedades , Proteínas de Peces/genética , Silenciador del Gen , Inmunidad Innata , Proteínas de Insectos/metabolismo , Lectinas/genética , Simulación del Acoplamiento Molecular , ARN Ribosómico 16S/genética , Homología Estructural de Proteína
13.
Theriogenology ; 150: 15-19, 2020 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-31983467

RESUMEN

The present review aims to offer a non-comprehensive outline of the current state-of-the-art and future perspectives on management and therapeutic tools for intrauterine growth restriction (IUGR) and associated prenatal programming in both human and animal species. Animals are used as models for the study of phenomena related to IUGR, but also for research on prenatal therapies with the main objective of designing and developing preventive and therapeutic strategies. The research is currently paying attention on maternal-focused pharmacological treatments and nutritional strategies but also on fetal-focused treatments. Fetal-focused treatments, administered either directly at the fetus or by using infusion of umbilical cord, amniotic sac or placenta, which avoids the administration of substances at high doses to the mother for allowing their availability at the fetoplacental level. The results obtained in this area of research using large animals (rabbits, pigs and ruminants) have a dual interest, for translational biomedicine and for veterinary medicine and animal production.


Asunto(s)
Efectos Tardíos de la Exposición Prenatal/veterinaria , Animales , Femenino , Desarrollo Fetal , Retardo del Crecimiento Fetal , Intercambio Materno-Fetal , Embarazo
14.
J Endocrinol Invest ; 43(7): 995-1000, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31970690

RESUMEN

PURPOSE: The aim of this study was to determine whether the triglycerides and glucose (TyG) index is associated with the presence of metabolically obese normal-weight (MONW) phenotype and related cardiovascular risk factors. METHODS: Apparently healthy men and non-pregnant women aged 20-65 years were enrolled in a population-based cross-sectional study. Overweight, obesity, smoking, alcohol consumption, pregnancy, diagnosis of hypertension, diabetes, cardiovascular disease, liver disease, renal disease, malignancy, and medical treatment were exclusion criteria. Subjects were allocated into the MONW or normal-weight groups. MONW phenotype was defined by normal weight and the presence of at least one of the following cardiovascular risk factors: elevated blood pressure, hyperglycemia, hypertriglyceridemia, and low HDL cholesterol. RESULTS: A total of 542 subjects were enrolled and allocated into the MONW (n = 354) and normal-weight (n = 188) groups. The adjusted logistic regression analysis showed that the elevated TyG index is significantly associated with the presence of MONW phenotype (OR = 11.14; 95% CI 6.04-20.57), hyperglycemia (OR = 3.18; 95% CI 1.95-5.21), hypertriglyceridemia (OR = 399.19; 95% CI 94.01-1694.98), and low HDL-C (OR = 2.60; 95% CI 1.74-3.87), but not with elevated blood pressure (OR = 1.55; 95% CI 0.93-2.60). CONCLUSION: Results of this study support that the TyG index may be a useful indicator to detect MONW phenotype and associated cardiovascular risk factors.


Asunto(s)
Glucemia/metabolismo , Factores de Riesgo de Enfermedad Cardiaca , Peso Corporal Ideal , Triglicéridos/sangre , Adulto , Anciano , Índice de Masa Corporal , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , HDL-Colesterol/sangre , Estudios Transversales , Femenino , Humanos , Hiperglucemia/complicaciones , Hiperglucemia/epidemiología , Hiperglucemia/metabolismo , Hipertensión/complicaciones , Hipertensión/epidemiología , Hipertensión/metabolismo , Hipertrigliceridemia/complicaciones , Hipertrigliceridemia/epidemiología , Hipertrigliceridemia/metabolismo , Peso Corporal Ideal/fisiología , Masculino , Persona de Mediana Edad , Obesidad/metabolismo , Fenotipo , Factores de Riesgo , Adulto Joven
15.
Drugs Today (Barc) ; 55(10): 641-652, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31720561

RESUMEN

ROS1 gene fusions account for approximately 1-2% of all cases of non-small cell lung cancer (NSCLC). Similarly to anaplastic lymphoma kinase (ALK)-positive NSCLC, patients with ROS1+ NSCLC tend to have minimal smoking and be of the female sex. In most cases, adenocarcinoma is the dominant histology. The ROS1 gene has homology to ALK and this structural similarity formed the basis for utilizing ALK inhibitors for ROS1+ NSCLC. On the basis of impressive progression-free survival of 19.2 months from the PROFILE 1001 trial, crizotinib obtained Food and Drug Administration (FDA) approval as first-line therapy for treatment of ROS1+ NSCLC. Since then, there has been a growing appreciation of the incidence of brain metastases in ROS1+ NSCLC and rates of central nervous system progression on crizotinib. Additionally, appreciation of novel resistance mechanisms to crizotinib has led to the development of newer tyrosine kinase inhibitors (TKIs). In this review, we highlight known and emerging TKIs for the management of ROS1+ NSCLC.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Neoplasias Pulmonares/tratamiento farmacológico , Terapia Molecular Dirigida , Proteínas Tirosina Quinasas/genética , Proteínas Proto-Oncogénicas/genética , Quinasa de Linfoma Anaplásico/antagonistas & inhibidores , Humanos , Inhibidores de Proteínas Quinasas/uso terapéutico
16.
Nat Med ; 25(9): 1442-1452, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31477907

RESUMEN

Our understanding of how the gut microbiome interacts with its human host has been restrained by limited access to longitudinal datasets to examine stability and dynamics, and by having only a few isolates to test mechanistic hypotheses. Here, we present the Broad Institute-OpenBiome Microbiome Library (BIO-ML), a comprehensive collection of 7,758 gut bacterial isolates paired with 3,632 genome sequences and longitudinal multi-omics data. We show that microbial species maintain stable population sizes within and across humans and that commonly used 'omics' survey methods are more reliable when using averages over multiple days of sampling. Variation of gut metabolites within people over time is associated with amino acid levels, and differences across people are associated with differences in bile acids. Finally, we show that genomic diversification can be used to infer eco-evolutionary dynamics and in vivo selection pressures for strains within individuals. The BIO-ML is a unique resource designed to enable hypothesis-driven microbiome research.


Asunto(s)
Bacterias/genética , Microbioma Gastrointestinal/genética , Filogenia , Selección Genética/genética , Bacterias/clasificación , Bacterias/aislamiento & purificación , Ácidos y Sales Biliares/genética , Ácidos y Sales Biliares/metabolismo , Bancos de Muestras Biológicas , Heces/microbiología , Variación Genética/genética , Genoma Bacteriano/genética , Humanos , Metaboloma/genética
17.
Med Oral Patol Oral Cir Bucal ; 24(5): e610-e614, 2019 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-31433395

RESUMEN

BACKGROUND: To validate oral exfoliative cytology in the analysis of the microRNA expression profile in Oral Lichenoid Disease (OLD). MATERIAL AND METHODS: The expression of 13 microRNAs identified and presented by our group in a previous study was analyzed in 26 cases, 16 diagnosed as OLD and 10 controls with no oral mucosal pathology. Cytological samples from the oral mucosa obtained using an Orcellex toothbrush were analyzed using RT-qPCR and TaqMan microRNA assays. RESULTS: The aberrant expression was validated for 2 microRNAs (miR-146a-5p and miR-7-1-3p) of those previously recognized in the biopsy study. CONCLUSIONS: This is the first time that oral exfoliative cytology is validated in a study of the alterations of the expression of microRNAs in OLD. The alteration of miR-146a and miR-7 compared to controls was validated. These microRNAs are associated with both inflammatory and carcinogenic phenomena that are involved in the etiopathogenesis of this potentially malignant oral disorder.


Asunto(s)
MicroARNs , Enfermedades de la Boca , Perfilación de la Expresión Génica , Humanos , Reacción en Cadena en Tiempo Real de la Polimerasa
18.
J R Soc Interface ; 16(156): 20190197, 2019 07 26.
Artículo en Inglés | MEDLINE | ID: mdl-31288650

RESUMEN

In densely packed groups demonstrating collective behaviour, such as bird flocks, fish schools or packs of bicycle racers (cycling pelotons), information propagates over a network, with individuals sensing and reacting to stimuli over relatively short space and time scales. What remains elusive is a robust, mechanistic understanding of how sensory system properties affect interactions, information propagation and emergent behaviour. Here, we show through direct observation how the spatio-temporal limits of the human visual sensory system govern local interactions and set the network structure in large, dense collections of cyclists. We found that cyclists align in patterns within a ± 30° arc corresponding to the human near-peripheral visual field, in order to safely accommodate motion perturbations. Furthermore, the group structure changes near the end of the race, suggesting a narrowing of the used field of vision. This change is consistent with established theory in psychology linking increased physical exertion to the decreased field of perception. Our results show how vision, modulated by arousal-dependent neurological effects, sets the local arrangement of cyclists, the mechanisms of interaction and the implicit communication across the group. We furthermore describe information propagation phenomena with an analogous elastic solid mechanics model. We anticipate our mechanistic description will enable a more detailed understanding of the interaction principles for collective behaviour in a variety of animals.


Asunto(s)
Ciclismo/fisiología , Modelos Biológicos , Conducta Social , Realidad Virtual , Percepción Visual/fisiología , Humanos
19.
Epidemiol Infect ; 147: e183, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-31063113

RESUMEN

The disease caused by the influenza virus is a global public health problem due to its high rates of morbidity and mortality. Thus, analysis of the information generated by epidemiological surveillance systems has vital importance for health decision making. A retrospective analysis was performed using data generated by the four molecular diagnostic laboratories of the Mexican Social Security Institute between 2010 and 2016. Demographics, influenza positivity, seasonality, treatment choices and vaccination status analyses were performed for the vaccine according to its composition for each season. In all cases, both the different influenza subtypes and different age groups were considered separately. The circulation of A/H1N1pdm09 (48.7%), influenza A/H3N2 (21.1%), influenza B (12.6%), influenza A not subtyped (11%) and influenza A/H1N1 (6.6%) exhibited well-defined annual seasonality between November and March, and there were significant increases in the number of cases every 2 years. An inadequate use of oseltamivir was determined in 38% of cases, and the vaccination status in general varied between 12.1 and 18.5% depending on the season. Our results provide current information about influenza in Mexico and demonstrate the need to update both operational case definitions and medical practice guidelines to reduce the inappropriate use of antibiotics and antivirals.


Asunto(s)
Virus de la Influenza A/fisiología , Gripe Humana/epidemiología , Laboratorios/estadística & datos numéricos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Femenino , Humanos , Incidencia , Lactante , Recién Nacido , Gripe Humana/virología , Masculino , México/epidemiología , Persona de Mediana Edad , Prevalencia , Estudios Retrospectivos , Estaciones del Año , Adulto Joven
20.
Behav Brain Res ; 370: 111941, 2019 09 16.
Artículo en Inglés | MEDLINE | ID: mdl-31078617

RESUMEN

Amblyopia or lazy eye is a neurodevelopmental disorder that arises during the infancy and is caused by the interruption of binocular sensory activity before maturation of the nervous system. This impairment causes long-term deterioration of visual skills, particularly visual acuity and depth perception. Although visual function recovery has been supposed to be decreased with age as consequence of reduced neuronal plasticity, recent studies have shown that it is possible to promote plasticity and neurorestoration in the adult brain. Thus, transcranial direct current stimulation (tDCS) has been shown effective to treat amblyopia in the adulthood. In the present work we used postnatal monocular deprivation in Long Evans rats as an experimental model of amblyopia and the cliff test task to assess depth perception. Functional brain imaging PET was used to assess the effect of tDCS on cortical and subcortical activity. Visually deprived animals ability to perceive depth in the cliff test was significantly reduced in comparison to their controls. However, after 8 sessions of tDCS applied through 8 consecutive days, depth perception of amblyopic treated animals improved reaching control level. PET data showed 18F-FDG uptake asymmetries in the visual cortex of amblyopic animals, which disappeared after tDCS treatment. The possibility of cortical reorganization and stereoscopy recovery following brain stimulation points at tDCS as a useful strategy for treating amblyopia in adulthood. Furthermore, monocular deprivation in Long Evans rats is a valuable research model to study visual cortex mechanisms involved in depth perception and neural restoration after brain stimulation.


Asunto(s)
Ambliopía/fisiopatología , Ambliopía/terapia , Estimulación Transcraneal de Corriente Directa/métodos , Animales , Percepción de Profundidad/fisiología , Masculino , Plasticidad Neuronal/fisiología , Ratas , Ratas Long-Evans , Recuperación de la Función/fisiología , Privación Sensorial/fisiología , Visión Ocular , Agudeza Visual/fisiología , Corteza Visual/fisiología
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