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1.
AAPS PharmSciTech ; 25(7): 211, 2024 Sep 07.
Artículo en Inglés | MEDLINE | ID: mdl-39242397

RESUMEN

Pirarubicin attracted considerable attention in clinical studies because of its high therapeutic efficacy and reduced toxicity in comparison with other anthracyclines. Nevertheless, ~ 30% patients undergoing PIRA treatment still experience relapse and metastasis. Clinical advancements unveiled that cancer stem cells (CSCs) residing in the tumor constitutes a major factor for such limitations and subsequently are the reason for treatment failure. Consequently, eradicating CSCs alongside bulk tumor is a crucial undertaking to attain utmost therapeutic efficacy of the treatment. Nevertheless, majority of the CSCs inhibitors currently under examination lack specificity, show unsynchronized bioavailability with other primary treatments and exhibit notable toxicity in their therapeutic applications, which is primarily attributable to their inadequate tumor-targeting capabilities. Therefore, we have developed a biodegradable polylactic acid based blend block copolymeric NPs for concomitant delivery of CSCs inhibitor Salinomycin (SAL) & chemotherapeutic drug Pirarubicin (PIRA) with an aim to improve the efficacy of treatment and prevent cancer relapse. Prepared NPs showed < 100 nm size and excellent loading with sustained release for both the drugs. Also, PIRA:SAL co-loaded NPs exhibits synergistically enhanced cytotoxicity against cancer cell as well as CSCs. Most importantly, NPs mediated co-delivery of the drugs showed complete tumor eradication, without any reoccurrence throughout the surveillance period. Additionally, NPs treatment didn't show any histopathological alteration in vital organs confirming their non-toxic nature. Altogether, present study concludes that the developed PIRA:SAL NPs have excellent efficacy for tumor regression as well as prevention of cancer relapse, hence can be used as a potential combination therapy for cancer treatment.


Asunto(s)
Doxorrubicina , Piranos , Piranos/administración & dosificación , Piranos/farmacología , Doxorrubicina/administración & dosificación , Doxorrubicina/análogos & derivados , Doxorrubicina/farmacología , Humanos , Animales , Línea Celular Tumoral , Antineoplásicos/administración & dosificación , Antineoplásicos/farmacología , Nanopartículas/química , Sinergismo Farmacológico , Células Madre Neoplásicas/efectos de los fármacos , Ratones , Poliésteres/química , Sistemas de Liberación de Medicamentos/métodos , Portadores de Fármacos/química , Neoplasias/tratamiento farmacológico , Neoplasias/patología , Recurrencia Local de Neoplasia/tratamiento farmacológico , Femenino , Liberación de Fármacos , Policétidos Poliéteres
2.
Heliyon ; 10(15): e34559, 2024 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-39144948

RESUMEN

Personalized social media advertisements (PSMAs) are developed by using consumers' personal information like names, demographic details, location, past buying history, and lifestyle interests to quickly grab consumers' attention within the cluttered space of digital advertisements. Generation Z consumers are highly connected to social media. Hence, this study attempts to understand how Generation Z consumers with different personality traits perceive personalized advertisements (PAs) on Facebook, and subsequently, how their perceived personalization influences their intention to click on PAs based on perceived usefulness and privacy concerns associated with those advertisements. The theoretical underpinning of this research is based on the self-congruency theory and privacy-calculus theory. An explanatory sequential mixed-methods design has been adopted, where a quantitative analysis (Study 1) is followed by a qualitative approach (Study 2). For Study 1, responses were collected from 324 Generation Z consumers through a structured questionnaire and the data was analyzed using the structural equation modeling technique to measure relationships among the constructs. Further, in Study 2, in-depth interviews were conducted with 15 Generation Z consumers, a purposively selected subset of informants from Study 1, to explore the potential causes of those relationships observed in Study 1. It has been found from the study that consumers' perception of PSMAs varies based on their personality traits. Consumers with dominant extraversion, conscientiousness, and neurotic personality traits perceive PSMAs positively whereas the openness to experience and agreeableness dominant consumers perceive those negatively. Positive perception of PSMAs among consumers increases the perceived usefulness of communications and subsequently improves the click-through intentions of the consumers. Generation Z Consumers' perception of PSMAs does not have any influence on their privacy concerns. Consumers' high privacy concerns reduce the click-through intention rate toward PSMAs. The study will help digital marketing managers to strategically deliver PSMAs, thereby enhancing the efficiency of their advertisements.

3.
Nat Hum Behav ; 2024 Aug 12.
Artículo en Inglés | MEDLINE | ID: mdl-39134740

RESUMEN

Personality is influenced by both genetic and environmental factors and is associated with other psychiatric traits such as anxiety and depression. The 'big five' personality traits, which include neuroticism, extraversion, agreeableness, conscientiousness and openness, are a widely accepted and influential framework for understanding and describing human personality. Of the big five personality traits, neuroticism has most often been the focus of genetic studies and is linked to various mental illnesses, including depression, anxiety and schizophrenia. Our knowledge of the genetic architecture of the other four personality traits is more limited. Here, utilizing the Million Veteran Program cohort, we conducted a genome-wide association study in individuals of European and African ancestry. Adding other published data, we performed genome-wide association study meta-analysis for each of the five personality traits with sample sizes ranging from 237,390 to 682,688. We identified 208, 14, 3, 2 and 7 independent genome-wide significant loci associated with neuroticism, extraversion, agreeableness, conscientiousness and openness, respectively. These findings represent 62 novel loci for neuroticism, as well as the first genome-wide significant loci discovered for agreeableness. Gene-based association testing revealed 254 genes showing significant association with at least one of the five personality traits. Transcriptome-wide and proteome-wide analysis identified altered expression of genes and proteins such as CRHR1, SLC12A5, MAPT and STX4. Pathway enrichment and drug perturbation analyses identified complex biology underlying human personality traits. We also studied the inter-relationship of personality traits with 1,437 other traits in a phenome-wide genetic correlation analysis, identifying new associations. Mendelian randomization showed positive bidirectional effects between neuroticism and depression and anxiety, while a negative bidirectional effect was observed for agreeableness and these psychiatric traits. This study improves our comprehensive understanding of the genetic architecture underlying personality traits and their relationship to other complex human traits.

4.
ACS Omega ; 9(28): 30120-30130, 2024 Jul 16.
Artículo en Inglés | MEDLINE | ID: mdl-39035924

RESUMEN

The present study describes the development and validation of a simple and rapid HPLC method for the simultaneous quantification of exemestane and thymoquinone. The separation of both compounds was performed on a 5 µ C-18 column utilizing phase A as water/methanol (45:5 v/v) and phase B as acetonitrile (50 v/v) (total ratio of A/B = 40:60 v/v) in isocratic elution mode as the mobile phase at a flow rate of 0.8 mL/min. Further, the Box-Behnken design was used for optimizing the analytical method. The proposed method was validated for various parameters, and all parameters were found to be within an acceptable range. The simultaneous detection of both drugs was monitored at 243 nm with a retention time of 5.73 and 6.93 min, respectively. Moreover, the forced degradation studies were conducted under various stress conditions, and the relevance of the validated RP-HPLC method was further explored for the estimation of drugs from lipid-based nanoformulation. Taken together, the study construed the development of an efficient and robust method that could be used for the quantification of these agents in various in vitro as well as in vivo models.

5.
Cell Genom ; 4(6): 100582, 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38870908

RESUMEN

Epiretinal membrane (ERM) is a common retinal condition characterized by the presence of fibrocellular tissue on the retinal surface, often with visual distortion and loss of visual acuity. We studied European American (EUR), African American (AFR), and Latino (admixed American, AMR) ERM participants in the Million Veteran Program (MVP) for genome-wide association analysis-a total of 38,232 case individuals and 557,988 control individuals. We completed a genome-wide association study (GWAS) in each population separately, and then results were meta-analyzed. Genome-wide significant (GWS) associations were observed in all three populations studied: 31 risk loci in EUR subjects, 3 in AFR, and 2 in AMR, with 48 in trans-ancestry meta-analysis. Many results replicated in the FinnGen sample. Several GWS variants associate to alterations in gene expression in the macula. ERM showed significant genetic correlation to multiple traits. Pathway enrichment analyses implicated collagen and collagen-adjacent mechanisms, among others. This well-powered ERM GWAS identified novel genetic associations that point to biological mechanisms for ERM.


Asunto(s)
Membrana Epirretinal , Estudio de Asociación del Genoma Completo , Humanos , Membrana Epirretinal/genética , Femenino , Predisposición Genética a la Enfermedad , Masculino , Población Blanca/genética , Polimorfismo de Nucleótido Simple , Negro o Afroamericano/genética , Sitios Genéticos/genética , Anciano , Estados Unidos/epidemiología , Hispánicos o Latinos/genética , Persona de Mediana Edad
6.
J Pediatric Infect Dis Soc ; 13(5): 274-275, 2024 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-38587478

RESUMEN

School-based COVID-19 vaccine clinics were more likely to vaccinate children who identified as a racial minority, who lacked a regular source of primary care, and who lacked private insurance compared to those vaccinated in non-school-based community locations.


Asunto(s)
Vacunas contra la COVID-19 , COVID-19 , Accesibilidad a los Servicios de Salud , Unidades Móviles de Salud , Humanos , Estudios Transversales , Vacunas contra la COVID-19/provisión & distribución , Vacunas contra la COVID-19/administración & dosificación , COVID-19/prevención & control , Niño , Adolescente , Masculino , Vacunación , Femenino , SARS-CoV-2/inmunología , Servicios de Salud Escolar
7.
Cardiooncology ; 10(1): 21, 2024 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-38589947

RESUMEN

OBJECTIVES: To investigate the association between radiotherapy (RT) and cardiac biomarkers in women with left-sided breast cancer. METHODS: This prospective observational study recruited patients with stage I-III left-sided breast cancer without coronary heart disease who required adjuvant RT. High-sensitivity troponin I(hsTnI), N-terminal pro-brain natriuretic peptide(NT-proBNP), and high-sensitivity C-reactive protein(hsCRP) levels were measured pre-RT, immediately after RT, and 3 months post-RT. Cardiac-sparing RT techniques were utilized (Field-in-Field IMRT/VMAT ± voluntary deep inspiration breath-hold). Statistical analyses were performed using non-parametric tests and multivariable quantile regression (QR). RESULTS: One hundred five patients completed the study, with 63 evaluable at three months post-RT. Pre- and post-RT biomarkers showed no significant differences. Median pre-RT and post-RT values were: hsTnI (0.012ng/mL; 0.012ng/mL), hsCRP (3.1 mg/L; 2.8 mg/L), and NT-proBNP (59pg/mL; 45pg/mL). Three months post-RT, hsTnI, hsCRP and NT-proBNP levels also showed no significant differences. Multivariable QR revealed no association between heart Dmean [median(IQR): 2.87 Gy (2.05-3.94)] and post-RT biomarkers. Age and BMI were associated with hsCRP and NT-proBNP, respectively. CONCLUSIONS: hsTnI, NT-proBNP, and hsCRP are not correlated with contemporary low cardiac exposure in left-sided breast cancer patients treated with contemporary RT techniques.

8.
ACS Omega ; 9(8): 9735-9752, 2024 Feb 27.
Artículo en Inglés | MEDLINE | ID: mdl-38434864

RESUMEN

For achieving high effectiveness in the management of breast cancer, coadministration of drugs has attracted a lot of interest as a mode of therapy when compared to a single chemotherapeutic agent that often results in reduced therapeutic end results. Owing to their proven effectiveness, good patient compliance, and lower costs, oral anticancer drugs have received much attention. In the present work, we formulated the chitosan-coated nanoliposomes loaded with two lipophilic agents, namely, exemestane (EXE) and genistein (GEN). The formulation was prepared using the ethanol injection method, which is considered a simple method for getting the nanoliposomes. The formulation was optimized using Box-Behnken design (BBD) and was extensively characterized for particle size, ζ-potential, Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), and X-ray diffraction (XRD) analysis. The sizes of conventional and coated liposomes were found to be 104.6 ± 3.8 and 120.3 ± 6.4 nm with a low polydispersity index of 0.399 and 0.381, respectively. The ζ-potential of the liposomes was observed to be -16.56 mV, which changed to a positive value of +22.4 mV, clearly indicating the complete coating of the nanoliposomes by the chitosan. The average encapsulation efficiency was found to be between 70 and 80% for all prepared formulations. The compatibility of the drug with excipients and complete dispersion of the drug inside the system were verified by FTIR, XRD, and DSC studies. Furthermore, the in vitro release studies concluded the sustained release pattern following the Korsmeyer-Peppas model as the best-fitting model with Fickian diffusion. Ex vivo studies showed better permeation of the chitosan-coated liposomes, which was further confirmed by confocal studies. The prepared chitosan-coated liposomes showed superior antioxidant activity (94.56%) and enhanced % cytotoxicity (IC50 7.253 ± 0.34 µM) compared to the uncoated liposomes. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay displayed better cytotoxicity of the chitosan-coated nanoliposomes compared to the plain drug, showing the better penetration and enhanced bioavailability of drugs inside the cells. The formulation was found to be safe for administration, which was confirmed using the toxicity studies performed on an animal model. The above data suggested that poorly soluble lipophilic drugs could be successfully delivered via chitosan-coated liposomes for their effective delivery in breast cancer.

9.
Dysphagia ; 2024 Feb 21.
Artículo en Inglés | MEDLINE | ID: mdl-38381156

RESUMEN

Dysphagia is a significant health concern especially amongst the old age population. It is an ailment brought on by the weakening of the swallowing muscles. To reduce the risk of choking in dysphagia patients, the food is usually diluted to suit their swallowing ability. But dilution results in reducing the nutritional density of the foods thus causing undernutrition and malnutrition in patients. In this study, functional liquid diets were formulated under International Dysphagia Diet Standardization Initiative (IDDSI) levels 0-2. The developed diets were analysed for their proximate composition, colour, antioxidant and sensory properties. Antioxidant activities were determined using 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+), 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) and total phenolic content (TPC) methods. The highest ABTS+ value was observed in pumpkin puree (level-2) i.e. 98.59%. Black carrot juice (level-1) showed the highest DPPH free radical scavenging activity and FRAP value viz. 88.43% and 689.33 µM TE/g, respectively. Electromyography (EMG) is an upcoming technique of food texture evaluation which provides real-time information about food oral processing. In this study, an EMG was conducted to measure the myoelectrical activity of human suprahyoid and masseter muscles by placing electrodes on the skin's surface during the oral processing of liquid. The EMG parameters correlated significantly with viscosity, ease of swallowing and IDDSI levels of the formulated diets. Hence EMG can be used as a tool for design and development of textured-modified diets for dysphagia patients. The sensory scores of formulated diets in this study were high indicating that these liquid diets may be incorporated into the diet plans of dysphagia patients.

10.
Res Sq ; 2024 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-38405922

RESUMEN

Inherited retinal degenerations are blinding genetic disorders characterized by high genetic and phenotypic heterogeneity. The implementation of next-generation sequencing in routine diagnostics, together with advanced clinical phenotyping including multimodal retinal imaging, have contributed to the increase of reports describing novel genotype-phenotype associations and phenotypic expansions. In this study, we describe sixteen families with early-onset non-syndromic retinal degenerations in which affected probands carried rare bi-allelic variants in CFAP410, a ciliary gene previously associated with syndromic recessive Jeune syndrome. The most common retinal phenotypes were cone-rod and rod-cone dystrophies, but the clinical presentations were unified by their early onset as well as the severe impact on central visual function. Twelve variants were detected (three pathogenic, seven likely pathogenic, two of uncertain significance), eight of which were novel. One deep intronic change, c.373+91A>G, led to the creation of a cryptic splice acceptor site in intron four, followed by the inclusion of a 200- base pair pseudoexon and subsequent premature stop codon formation. To our knowledge this is the first likely pathogenic deep-intronic variant identified in this gene. Meta-analysis of all published and novel CFAP410 variants revealed no clear correlation between the severity of the CFAP410-associated phenotypes and the identified causal variants. This is supported by the fact that the frequently encountered missense variant p.(Arg73Pro), often found in syndromic cases, was also associated with non-syndromic retinal degeneration. This study expands the current knowledge of CFAP410-associated ciliopathy by enriching its mutational landscape and supports its association with non-syndromic retinal degeneration.

11.
medRxiv ; 2024 Jan 17.
Artículo en Inglés | MEDLINE | ID: mdl-38293137

RESUMEN

Personality is influenced by both genetic and environmental factors and is associated with other psychiatric traits such as anxiety and depression. The "Big Five" personality traits, which include neuroticism, extraversion, agreeableness, conscientiousness, and openness, are a widely accepted and influential framework for understanding and describing human personality. Of the big five personality traits, neuroticism has most often been the focus of genetic studies and is linked to various mental illnesses including depression, anxiety, and schizophrenia. Our knowledge of the genetic architecture of the other four personality traits is more limited. Utilizing the Million Veteran Program (MVP) cohort we conducted a genome-wide association study (GWAS) in individuals of European and African ancestry. Adding other published data, we performed GWAS meta-analysis for each of the five personality traits with sample sizes ranging from 237,390 to 682,688. We identified 158, 14, 3, 2, and 7 independent genome-wide significant (GWS) loci associated with neuroticism, extraversion, agreeableness, conscientiousness, and openness, respectively. These findings represent 55 novel loci for neuroticism, as well as the first GWS loci discovered for extraversion and agreeableness. Gene-based association testing revealed 254 genes showing significant association with at least one of the five personality traits. Transcriptome-wide and proteome-wide analysis identified altered expression of genes and proteins such as CRHR1, SLC12A5, MAPT, and STX4. Pathway enrichment and drug perturbation analyses identified complex biology underlying human personality traits. We also studied the inter-relationship of personality traits with 1,437 other traits in a phenome-wide genetic correlation analysis, identifying new associations. Mendelian randomization showed positive bidirectional effects between neuroticism and depression and anxiety while a negative bidirectional effect was observed for agreeableness and these psychiatric traits. This study improves our comprehensive understanding of the genetic architecture underlying personality traits and their relationship to other complex human traits.

12.
J Minim Access Surg ; 2024 Jan 19.
Artículo en Inglés | MEDLINE | ID: mdl-38240315

RESUMEN

ABSTRACT: Diaphragmatic eventration (DE) is an abnormal condition where a portion or the entire hemidiaphragm elevates due to insufficient muscle or nerve function while maintaining its anatomical attachments. On the other hand, congenital diaphragmatic hernias occur due to the abnormal development of muscular entities of the diaphragm, resulting in the displacement of abdominal contents into the thorax. The difference between diaphragmatic hernia and eventration is important as there is no true defect in DE. Ruptured eventration of the diaphragm is a rare entity, with only three cases reported in adults in literature till date, all on the left side. We report the first case of ruptured eventration of the diaphragm on the right side, which was repaired by a combination of laparoscopy and thoracoscopy and with double-mesh placement.

13.
Chemosphere ; 351: 141165, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38224746

RESUMEN

An increasing use of plastics in daily life leads to the accumulation of microplastics (MPs) in the environment, posing a serious threat to the ecosystem, including humans. It has been reported that MPs cause neurotoxicity, but the deleterious effect of polystyrene (PS) MPs on neuronal cytoarchitectural morphology in the prefrontal cortex (PFC) region of mice brain remains to be established. In the present study, Swiss albino male mice were orally exposed to 0.1, 1, and 10 ppm PS-MPs for 28 days. After exposure, we found a significant accumulation of PS-MPs with a decreased number of Nissl bodies in the PFC region of the entire treated group compared to the control. Morphometric analysis in the PFC neurons using Golgi-Cox staining accompanied by Sholl analysis showed a significant reduction in basal dendritic length, dendritic intersections, nodes, and number of intersections at seventh branch order in PFC neurons of 1 ppm treated PS-MPs. In neurons of 0.1 ppm treated mice, we found only decrease in the number of intersections at the seventh branch order. While 10 ppm treated neurons decreased in basal dendritic length, dendritic intersections, followed by the number of intersections at the third and seventh branch order were observed. As well, spine density on the apical secondary branches along with mRNA level of BDNF was significantly reduced in all the PS-MPs treated PFC neurons, mainly at 1 ppm versus control. These results suggest that PS-MPs exposure affects overall basal neuronal arborization, with the highest levels at 1 and 10 ppm, followed by 0.1 ppm treated neurons, which may be related to the down-regulation of BDNF expression in PFC.


Asunto(s)
Espinas Dendríticas , Poliestirenos , Humanos , Animales , Ratones , Poliestirenos/toxicidad , Microplásticos , Plásticos/farmacología , Factor Neurotrófico Derivado del Encéfalo/genética , Ecosistema , Corteza Prefrontal/fisiología , Plasticidad Neuronal
14.
Ophthalmic Genet ; 45(3): 289-293, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38224077

RESUMEN

BACKGROUND: Biallelic variants in RTN4IP1 are a well-established cause of syndromic and nonsyndromic early-onset autosomal recessive optic neuropathy. They have more recently been reported to cause a concomitant but later-onset rod-cone dystrophy with or without syndromic features. METHODS: A comprehensive evaluation was performed that included assessment of visual and retinal function, clinical examination, and retinal imaging. Childhood ophthalmic records as well as the results of genetic testing were evaluated. RESULTS: A 24-year-old female described longstanding reduced visual acuity with more recent subjective impairment of dark adaptation. Visual acuity was subnormal in both eyes. Goldmann kinetic perimetry demonstrated scotomas in a pattern consistent with the presence of both optic neuropathy and rod-cone dystrophy with fundus exam as well as retinal imaging showing corroborating findings. Full-field electroretinography further confirmed the presence of a rod-cone dystrophy. Genetic testing demonstrated biallelic variants in RTN4IP1, one of which was novel, in association with the ocular findings. CONCLUSIONS: RTN4IP1-associated early-onset bilateral optic neuropathy with rod-cone dystrophy is a recently described clinical entity with limited reports available to-date. The present case provides additional support for this dual phenotype and identifies a novel causative variant.


Asunto(s)
Distrofias de Conos y Bastones , Electrorretinografía , Enfermedades del Nervio Óptico , Femenino , Humanos , Adulto Joven , Proteínas Portadoras/genética , Distrofias de Conos y Bastones/genética , Distrofias de Conos y Bastones/diagnóstico , Proteínas Mitocondriales , Mutación , Enfermedades del Nervio Óptico/genética , Enfermedades del Nervio Óptico/diagnóstico , Fenotipo , Proteínas/genética , Agudeza Visual/fisiología , Pruebas del Campo Visual
15.
Biochem Biophys Res Commun ; 690: 149250, 2024 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-38039781

RESUMEN

The von Hippel-Lindau protein (pVHL) is a tumor suppressor involved in oxygen regulation via dynamic nucleocytoplasmic shuttling. It plays a crucial role in cell survival by degrading hypoxia-inducible factors (HIFs). Mutations in the VHL gene cause angiogenic tumors, characterized as VHL syndrome. However, aggressive tumors involving wild-type pVHL have also been described but the underlying mechanism remains to be revealed. We have previously shown that pVHL possesses several short amyloid-forming motifs, making it aggregation-prone. In this study, using a series of biophysical assays, we demonstrated that a pVHL-derived fragment (pVHL104-140) that harbors the nuclear export motif and HIF binding site, forms amyloid-like fibrillar structures in vitro by following secondary-nucleation-based kinetics. The peptide also formed amyloids at acidic pH that mimics the tumor microenvironment. We, subsequently, validated the amyloid formation by pVHL in vitro. Using the Curli-dependent amyloid generator (C-DAG) expression system, we confirmed the amyloidogenesis of pVHL in bacterial cells. The pVHL amyloids are an attractive target for therapeutics of the VHL syndrome. Accordingly, we demonstrated in vitro that Purpurin is a potent inhibitor of pVHL fibrillation. The amyloidogenic behavior of wild-type pVHL and its inhibition provide novel insights into the molecular underpinning of the VHL syndrome and its possible treatment.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Enfermedad de von Hippel-Lindau , Humanos , Ubiquitina-Proteína Ligasas/metabolismo , Enfermedad de von Hippel-Lindau/genética , Factores de Transcripción/metabolismo , Carcinoma de Células Renales/metabolismo , Proteína Supresora de Tumores del Síndrome de Von Hippel-Lindau/genética , Genes Supresores de Tumor , Proteínas Amiloidogénicas/genética , Neoplasias Renales/genética , Subunidad alfa del Factor 1 Inducible por Hipoxia/genética , Microambiente Tumoral
16.
J Pediatr ; 265: 113816, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37931699

RESUMEN

OBJECTIVES: To assess postmortem vitamin A (VA) concentrations in children under 5 years of age and evaluate the association between VA deficiency (VAD) and infectious causes of death (CoD). STUDY DESIGN: In this cross-sectional study from the Child Health and Mortality Prevention Surveillance (CHAMPS) Network, liver biopsies collected within 72 hours of death were analyzed from 405 stillbirths and children under 5 years in Kenya and South Africa. Total liver VA (TLVA) concentrations were quantified using ultra-performance liquid chromatography, and cutoffs of ≤0.1 µmol/g, >0.1 to <0.7 µmol/g, ≥0.7 to <1.0 µmol/g, and ≥1.0 µmol/g were used to define VAD, adequate VA status, high VA, and hypervitaminosis A, respectively. CoD were determined by expert panel review. RESULTS: Among 366 liver samples with viable extraction, pooled prevalences of VAD, adequacy, high VA, and hypervitaminosis were 34.2%, 51.1%, 6.0%, and 8.7%, respectively. VAD was more common among neonates compared with stillbirths, infants, or children, and among those with low birthweight (LBW), underweight, or stunting (P < .05). When adjusting for site, age, and sex, there was no significant association of VAD with increased infectious CoD (OR 1.9, 95% confidence interval [CI] 0.9, 3.8, P = .073). In stratified analyses, VA deficient boys, but not girls, had an increased risk of infectious CoD (OR 3.4, 95% CI 1.3, 10.3, P = .013). CONCLUSIONS: Definitive postmortem assessment of VA status identified both VAD and VA excess among children under 5 years of age in Kenya and South Africa. VAD in boys was associated with increased risk of infectious mortality. Our findings may inform a transition from universal VA supplementation (VAS) to targeted strategies in certain countries.


Asunto(s)
Enfermedades Transmisibles , Deficiencia de Vitamina A , Niño , Masculino , Lactante , Recién Nacido , Femenino , Embarazo , Humanos , Preescolar , Vitamina A/efectos adversos , Estudios Transversales , Mortinato , Deficiencia de Vitamina A/complicaciones , Deficiencia de Vitamina A/epidemiología , Vitaminas , Hígado
17.
Ophthalmic Epidemiol ; 31(2): 145-151, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37198948

RESUMEN

PURPOSE: The utility of screening for early diagnosis of glaucoma remains a widely debated topic in the care of ophthalmic patients. There are currently no population-based guidelines regarding screening for glaucoma. The purpose of this study is to determine the utility of optical coherence tomography (OCT) for early glaucoma screening in a population of diabetic patients. The results of this study may inform future screening practices. METHODS: The current study is a post hoc analysis of OCT data collected from diabetic patients screened for eye disease over 6 months. Glaucoma suspects (GS) were identified based on abnormal retinal nerve fiber layer (RNFL) thickness on OCT. Fundus photographs of GS were graded by two independent raters for vertical cup-to-disc ratio (CDR) and other signs of glaucomatous changes. RESULTS: Of the 807 subjects screened, 50 patients (6.2%) were identified as GS. The mean RNFL thickness for GS was significantly lower than the mean RNFL in the total screening population (p < .001). Median CDR for GS was 0.44. Twenty-eight eyes of 17 GS were marked as having optic disc notching or rim thinning by at least one grader. Cohen's kappa statistic for inter-rater reliability was 0.85. Racial differences showed that mean CDR was significantly higher in non-whites (p < .001). Older age was associated with thinner RNFL (r = -0.29, p = .004). CONCLUSIONS: Results of this study suggest that in a sample of diabetic patients, a small but clinically significant minority may be flagged as GS based on OCT. Nearly one-third of GS eyes were found to have glaucomatous changes on fundus photography by at least one grader. These results suggest screening with OCT may be useful in detecting early glaucomatous changes in high-risk populations, particularly older, non-white patients with diabetes.


Asunto(s)
Diabetes Mellitus , Glaucoma , Hipertensión Ocular , Humanos , Tomografía de Coherencia Óptica/métodos , Reproducibilidad de los Resultados , Presión Intraocular , Células Ganglionares de la Retina , Glaucoma/diagnóstico , Hipertensión Ocular/diagnóstico
18.
Curr Drug Saf ; 19(2): 172-190, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37132145

RESUMEN

BACKGROUND: Pharmacovigilance (PV) deals with the detection, collection, assessment, understanding, and prevention of adverse effects associated with drugs. The objective of PV is to ensure the safety of the medicines and patients by monitoring and reporting all adverse drug reactions (ADRs) associated with prescribed medicine usage. Findings have indicated that about 0.2- 24% of hospitalization cases are due to ADRs, of which 3.7% of patients have lethal ADRs. The reasons include the number of prescribed drugs, an increased number of new medicines in the market, an inadequate PV system for ADR monitoring, and a need for more awareness and knowledge about ADR reporting. Severe ADRs lead to enhanced hospital stays, increased treatment costs, risk of death, and many medical and economic consequences. Therefore, ADR reporting at its first instance is essential to avoid further harmful effects of the prescribed drugs. In India, the rate of ADR reporting is less than 1%, whereas worldwide, it is 5% due to a need for more awareness about PV and ADR monitoring among healthcare providers and patients. The main objective of this review is to highlight the current scenario and possible futuristic ways of ADR reporting methods in rural areas of India. We have searched the literature using PubMed, Google scholar, Indian citation index to retrieve the resources related to ADR monitoring and reporting in India's urban and rural areas. Spontaneous reporting is the most commonly used PV method to report ADRs in India's urban and rural areas. Evidence revealed that no effective ADR reporting mechanisms developed in rural areas causing underreporting of ADR, thus increasing the threat to the rural population. Hence, PV and ADR reporting awareness among healthcare professionals and patients, telecommunication, telemedicine, use of social media and electronic medical records, and artificial intelligence are the potential approaches for prevention, monitoring, and reporting of ADRs in rural areas.


Asunto(s)
Inteligencia Artificial , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Humanos , Sistemas de Registro de Reacción Adversa a Medicamentos , Conocimientos, Actitudes y Práctica en Salud , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/diagnóstico , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , India/epidemiología , Farmacovigilancia
19.
Nat Genet ; 55(12): 2094-2103, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37985822

RESUMEN

As recreational use of cannabis is being decriminalized in many places and medical use widely sanctioned, there are growing concerns about increases in cannabis use disorder (CanUD), which is associated with numerous medical comorbidities. Here we performed a genome-wide association study of CanUD in the Million Veteran Program (MVP), followed by meta-analysis in 1,054,365 individuals (ncases = 64,314) from four broad ancestries designated by the reference panel used for assignment (European n = 886,025, African n = 123,208, admixed American n = 38,289 and East Asian n = 6,843). Population-specific methods were applied to calculate single nucleotide polymorphism-based heritability within each ancestry. Statistically significant single nucleotide polymorphism-based heritability for CanUD was observed in all but the smallest population (East Asian). We discovered genome-wide significant loci unique to each ancestry: 22 in European, 2 each in African and East Asian, and 1 in admixed American ancestries. A genetically informed causal relationship analysis indicated a possible effect of genetic liability for CanUD on lung cancer risk, suggesting potential unanticipated future medical and psychiatric public health consequences that require further study to disentangle from other known risk factors such as cigarette smoking.


Asunto(s)
Estudio de Asociación del Genoma Completo , Abuso de Marihuana , Humanos , Predisposición Genética a la Enfermedad , Abuso de Marihuana/genética , Polimorfismo de Nucleótido Simple , Salud Pública , Veteranos , Grupos Raciales
20.
Cureus ; 15(10): e47579, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-38021586

RESUMEN

Calcium gluconate solutions are an essential part of the intensive care medication armamentarium. Calcium-related extravasations are not an infrequent occurrence. However, occult extravasation presenting solely as an isolated mass lesion with no preceding cutaneous manifestation is rare. Calcinosis cutis is an extraosseous collection of calcium deposits in the skin and subcutaneous tissues. Multiple etiopathogenetic factors play a role in its manifestations. We illustrate a case of a seven-week-old infant diagnosed with pseudo-hypoaldosteronism with a mysterious swelling on the left leg during the third week of hospitalization, which was attributed to occult iatrogenic calcinosis cutis.

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