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1.
Adv Physiol Educ ; 2024 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-39236104

RESUMEN

Physiology is an important field for students to gain a better understanding of biological mechanisms. Yet, many students often find it difficult to learn from lectures, resulting in poor retention. Here, we focus on the utilization of a learning workshop model to teach students at different levels ranging from middle school to undergraduate. We specifically designed a workshop to teach students about mitochondria endoplasmic reticulum contact (MERC) sites. The workshop was implemented for middle-school students in a laboratory setting that incorporated a pre-test to gauge prior knowledge, instructional time, hands-on activities, interactive learning from experts, and a post-test. We observed that the students remained engaged during the session relied on interactive methods, teamed with their peers to complete tasks, and delighted in the experience. Implications for the design of future physiological workshops are further offered.

2.
iScience ; 27(9): 110436, 2024 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-39262802

RESUMEN

Abdominal and thoracic aortic aneurysms (AAAs, TAAs) remain a major cause of deaths worldwide, in part due to the lack of reliable prognostic markers or early warning signs. Sox6 has been found to regulate renin controlling blood pressure. We hypothesized that Sox6 may serve as an important regulator of the mechanisms contributing to hypertension-induced aortic aneurysms. Phenotype and laboratory-wide association scans in a clinical cohort found that SOX6 gene expression is associated with aortic aneurysm in subjects of European ancestry. Sox6 and tumor necrosis factor alpha (TNF-α) expression were upregulated in aortic tissues from patients affected by either AAA or TAA. In Sox6 knockout mice with angiotensin-II-induced AAA, we found that Sox6 plays critical role in the development and progression of AAA. Our data support a regulatory role of SOX6 in the development of hypertension-induced AAA, suggesting that Sox6 may be a therapeutic target for the treatment of aortic aneurysms.

3.
Data Brief ; 56: 110808, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39263232

RESUMEN

Candida parapsilosis and Rhodotorula mucilaginosa are opportunistic pathogens affecting mostly immunocompromised hosts. Both species have emerged as causes of invasive candidiasis and sepsis respectively. Here we present high-quality long-read genome assemblies for a strain of C. parapsilosis isolated from human breast milk, with multiple predicted signatures consistent with Candida Drug Resistance CDR1/CDR2 and Multi Drug Resistance MDR1-type genes, also for an environmental strain of R. mucilaginosa with multiresistance to azole antifungals. The genome sequencing was performed using the R9.4.1 flowcell with the MinION Mk1B sequencer (Oxford Nanopore Technologies, Oxford, UK). The draft genome of C. parapsilosis HMC1 was assembled from 85,745 long-reads and has 13,114,208 bp in length and comprises 10 contigs making it a highly contiguous assembly. The R. mucilaginosa LBMH1012 assembly has 23,636,156 bp in length and comprises 54 contigs. The genome completeness was estimated as 94.02 % and 91.40 % respectively using BUSCO. These data may be useful to explore the genetic diversity landscape in both species, infer potential causal genes for antifungal resistance and virulence, and represent an addition to the useful sequence space on emerging fungal pathogens.

4.
Pharmaceuticals (Basel) ; 17(8)2024 Jul 25.
Artículo en Inglés | MEDLINE | ID: mdl-39204088

RESUMEN

Multiple sclerosis (MS) is a chronic inflammatory autoimmune neurological disease characterized by the recurrent appearance of demyelinating lesions and progressive disability. Currently, there are multiple disease-modifying treatments, however, there is a significant need to develop new therapeutic targets, especially for the progressive forms of the disease. This review article provides an overview of the most recent studies aimed at understanding the inflammatory processes that are activated in response to the accumulation of kynurenine pathway (KP) metabolites, which exacerbate an imbalance between immune system cells (e.g., Th1, Th2, and T reg) and promote the release of pro-inflammatory interleukins that modulate different mechanisms: membrane-receptors function; nuclear factors expression; and cellular signals. Together, these alterations trigger cell death mechanisms in brain cells and promote neuron loss and axon demyelination. This hypothesis could represent a remarkable approach for disease-modifying therapies for MS. Here, we also provide a perspective on the repositioning of some already approved drugs involved in other signaling pathways, which could represent new therapeutic strategies for MS treatment.

5.
ACS Omega ; 9(31): 33335-33350, 2024 Aug 06.
Artículo en Inglés | MEDLINE | ID: mdl-39130545

RESUMEN

This review emphasizes the progress in identifying and eliminating para-nitrophenol (4-NP), a toxic organic compound. It covers various strategical methods and materials, including organic and inorganic nanomaterials, for detecting and reducing 4-NP. Detection techniques such as electrochemical methods. Optical fiber-based surface plasmon resonance and photoluminescence, as well as the mechanisms of Förster Resonance Energy Transfer (FRET) and Inner Filter Effect (IFE) in fluorescence detection, are presented. Removal techniques for this contaminant include homogeneous catalysis, electrocatalysis, photocatalysis, and thermocatalysis, and their reaction mechanisms are also discussed. Further, the theoretical perspectives of 4-NP detection and reduction, parameters influencing the activities, and future perspectives are also reviewed in detail.

6.
J Cell Physiol ; 2024 Aug 13.
Artículo en Inglés | MEDLINE | ID: mdl-39138923

RESUMEN

The physical characteristics of brown adipose tissue (BAT) are defined by the presence of multilocular lipid droplets (LDs) within the brown adipocytes and a high abundance of iron-containing mitochondria, which give it its characteristic color. Normal mitochondrial function is, in part, regulated by organelle-to-organelle contacts. For example, the contact sites that mediate mitochondria-LD interactions are thought to have various physiological roles, such as the synthesis and metabolism of lipids. Aging is associated with mitochondrial dysfunction, and previous studies show that there are changes in mitochondrial structure and the proteins that modulate organelle contact sites. However, how mitochondria-LD interactions change with aging has yet to be fully clarified. Therefore, we sought to define age-related changes in LD morphology and mitochondria-lipid interactions in BAT. We examined the three-dimensional morphology of mitochondria and LDs in young (3-month) and aged (2-year) murine BAT using serial block face-scanning electron microscopy and the Amira program for segmentation, analysis, and quantification. Our analyses showed reductions in LD volume, area, and perimeter in aged samples in comparison to young samples. Additionally, we observed changes in LD appearance and type in aged samples compared to young samples. Notably, we found differences in mitochondrial interactions with LDs, which could implicate that these contacts may be important for energetics in aging. Upon further investigation, we also found changes in mitochondrial and cristae structure for the mitochondria interacting with LDs. Overall, these data define the nature of LD morphology and organelle-organelle contacts during aging and provide insight into LD contact site changes that interconnect biogerontology with mitochondrial function, metabolism, and bioactivity in aged BAT.

7.
Orthop J Sports Med ; 12(8): 23259671241256413, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39135860

RESUMEN

Background: Patient-reported outcome measures (PROMs) have been adopted as a way to measure patient self-rated physical function and health status for patients with anterior cruciate ligament (ACL) injuries. Although multiple PROMs exist and have been translated into various languages, the cross-cultural adaptation and validity of these PROMs for Spanish-speaking patients is unknown. Purpose: To evaluate the adaptation quality and psychometric properties of Spanish-language adaptations of PROMs for patients with ACL injuries. Study Design: Scoping review; Level of evidence, 3. Methods: Under PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, we reviewed published studies related to adaptation quality and psychometric properties of Spanish PROMs in patients with ACL injuries. The methodological quality of the included studies was assessed using the Guidelines for the Process of Cross-Cultural Adaptation of Self-Reported Measures, the Quality Criteria for Psychometric Properties of Health Status Questionnaires, and the Consensus-based Standards for the selection of health Measurement INstruments (COSMIN) checklist. The level of evidence for each PROM was determined based on the number of studies, methodological quality, consistency of results, and sample size. Results: The initial search strategy identified 5687 articles. After removal of duplicates, 1882 titles were screened, and 114 articles were assessed for eligibility. Six articles were selected for final review, comprising 4 PROMs: the Lysholm knee score, the Anterior Cruciate Ligament-Return to Sport After Injury (ACL-RSI), the Lower Extremity Functional Scale, and the Lower Limb Functional Index. Three studies followed all 6 processes for cross-cultural adaptation. None of the studies demonstrated all 14 domains required for cross-cultural validity (eg, description of translator expertise). The ACL-RSI achieved the highest level of evidence, with 3 of 9 domains demonstrating moderate evidence. Conclusion: This review identified 4 instruments that have been translated for Spanish-speaking patients with ACL injuries, none of which demonstrated appropriate adaptation or robust psychometric properties. The study highlights the need for improvement in PROMs for Spanish-speaking patients and the potential for mismeasurement and inappropriate application of PROM results in patients with ACL injuries.

8.
Artículo en Inglés | MEDLINE | ID: mdl-39097137

RESUMEN

BACKGROUND: Reverse total shoulder arthroplasty (rTSA) has gained popularity for the operative treatment of proximal humerus fractures (PHF). The purpose of this study was to compare racial differences in surgical management of PHF between open reduction and internal fixation (ORIF), hemiarthroplasty, and rTSA. Our hypothesis was that there would be no difference in fixation by race. METHODS: The National Surgical Quality Improvement Program (NSQIP) database was queried for ORIF, rTSA, and hemiarthroplasty between 2006 and 2020 for patients with a PHF. Race, ethnicity, age, sex, body mass index (BMI), and American Society of Anesthesiologists (ASA) class were recorded. Chi squared tests were performed to assess relationships between patient factors and operative intervention. Factors significant at the 0.10 level in univariable analyses were included in a multivariable multinomial model to predict operative intervention. RESULTS: 7,499 patients underwent surgical treatment for a PHF, including 526 (7%) undergoing hemiarthroplasty, 5,011 (67%) undergoing ORIF, and 1,962 (26%) undergoing rTSA. 27% of white patients with PHF underwent rTSA compared to 21% of Black patients, 16% of Asian patients, and 14% of Native American and Alaskan Native patients (p<0.001). In the multivariable analysis, utilization of rTSA increased over time (OR 1.2 per year since 2006, p < 0.001) and hemiarthroplasty decreased over time (OR 0.86 per year since 2006, p < 0.001). Non-white patients had significantly lower odds of undergoing rTSA versus ORIF (OR 0.75, 95% CI 0.58-0.97), as did male patients (OR 0.77, 95% CI 0.66-0.88). Patients over 65 (OR 3.86, 95% CI 3.39-4.38), patients with higher ASA classifications (ASA2: OR 3.24, 95% CI 1.86-5.66, ASA3: OR 4.77, 95% CI 2.74-8.32, ASA4: OR 5.25, 95% CI 2.89-9.54), and patients who were overweight (OR 1.33, 95% CI 1.14-1.55) or obese (OR 1.52, 95% CI 1.32-1.75) had higher odds of undergoing rTSA versus ORIF. DISCUSSION: As utilization of rTSA increases, understanding disparities in surgical treatment of PHF is crucial to improving outcomes and equitable access to emerging orthopedic technologies. While patient factors such as age, BMI, and comorbidities are known to directly impact outcomes and thus may be predictive of the type of surgical intervention, patient race should not dictate treatment.

9.
Cureus ; 16(6): e63019, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-39070357

RESUMEN

BACKGROUND: Metabolic dysfunction-associated steatotic liver disease (MASLD) primarily affects the adult population and is closely related to obesity. The most severe form of MASLD, metabolic dysfunction-associated steatohepatitis (MASH), can progress to liver fibrosis. While lipoprotein(a) (Lp(a)) is known to be associated with cardiovascular disease, its relationship with MASLD remains unclear. This study aims to determine the prevalence of MASLD in ambulatory patients and to explore the association between Lp(a) levels and advanced liver damage. METHODS: This retrospective cross-sectional study included 130 patients older than 18 years seen in a healthcare center in Medellin, Colombia, between April 2023 and May 2024. Sociodemographic, clinical, and specific biomarker data were collected. Patients with cirrhosis, previous liver disease, frequent alcohol consumption, cancer, and other severe conditions were excluded. Continuous variables were analyzed using Student's t-tests or Mann-Whitney tests according to their distribution, and categorical variables were analyzed using contingency tables and chi-square tests. RESULTS: Of the 130 patients, 57.9% (n=73) had MASLD, with a higher prevalence in patients with obesity (80%, n=32). Lp(a) levels were abnormally high in 43.1% (n=31) of patients; however, a weak but significant inverse correlation was found between Lp(a) levels and the Fibrosis-4 (FIB-4) score, which is used to assess the severity of liver fibrosis. Patients with MASLD had significantly lower high-density lipoprotein (HDL) and vitamin D levels, and higher levels of gamma-glutamyl transferase (GGT). CONCLUSIONS: This study highlights the significant prevalence of MASLD in outpatients and its relationship with various biomarkers, including Lp(a), HDL, vitamin D, and GGT. Although the findings suggest a possible utility of Lp(a) as a biomarker in MASLD, longitudinal studies are needed to confirm these associations and clarify their role in liver disease progression. The study's limitations include its cross-sectional nature and potential selection bias, indicating the need for further research to validate these results.

10.
bioRxiv ; 2024 Jul 03.
Artículo en Inglés | MEDLINE | ID: mdl-38979162

RESUMEN

The liver, the largest internal organ and a metabolic hub, undergoes significant declines due to aging, affecting mitochondrial function and increasing the risk of systemic liver diseases. How the mitochondrial three-dimensional (3D) structure changes in the liver across aging, and the biological mechanisms regulating such changes confers remain unclear. In this study, we employed Serial Block Face-Scanning Electron Microscopy (SBF-SEM) to achieve high-resolution 3D reconstructions of murine liver mitochondria to observe diverse phenotypes and structural alterations that occur with age, marked by a reduction in size and complexity. We also show concomitant metabolomic and lipidomic changes in aged samples. Aged human samples reflected altered disease risk. To find potential regulators of this change, we examined the Mitochondrial Contact Site and Cristae Organizing System (MICOS) complex, which plays a crucial role in maintaining mitochondrial architecture. We observe that the MICOS complex is lost during aging, but not Sam50. Sam50 is a component of the sorting and assembly machinery (SAM) complex that acts in tandem with the MICOS complex to modulate cristae morphology. In murine models subjected to a high-fat diet, there is a marked depletion of the mitochondrial protein SAM50. This reduction in Sam50 expression may heighten the susceptibility to liver disease, as our human biobank studies corroborate that Sam50 plays a genetically regulated role in the predisposition to multiple liver diseases. We further show that changes in mitochondrial calcium dysregulation and oxidative stress accompany the disruption of the MICOS complex. Together, we establish that a decrease in mitochondrial complexity and dysregulated metabolism occur with murine liver aging. While these changes are partially be regulated by age-related loss of the MICOS complex, the confluence of a murine high-fat diet can also cause loss of Sam50, which contributes to liver diseases. In summary, our study reveals potential regulators that affect age-related changes in mitochondrial structure and metabolism, which can be targeted in future therapeutic techniques.

11.
bioRxiv ; 2024 May 21.
Artículo en Inglés | MEDLINE | ID: mdl-38826465

RESUMEN

The physical characteristics of brown adipose tissue (BAT) are defined by the presence of multilocular lipid droplets (LD) within the brown adipocytes and a high abundance of iron-containing mitochondria, which give it its characteristic color. Normal mitochondrial function is, in part, regulated by organelle-to-organelle contacts. Particularly, the contact sites that mediate mitochondria-LD interactions are thought to have various physiological roles, such as the synthesis and metabolism of lipids. Aging is associated with mitochondrial dysfunction, and previous studies show that there are changes in mitochondrial structure and proteins that modulate organelle contact sites. However, how mitochondria-LD interactions change with aging has yet to be fully clarified. Therefore, we sought to define age-related changes in LD morphology and mitochondria-lipid interactions in BAT. We examined the three-dimensional morphology of mitochondria and LDs in young (3-month) and aged (2-year) murine BAT using serial block face-scanning electron microscopy and the Amira program for segmentation, analysis, and quantification. Analysis showed reductions in LD volume, area, and perimeter in aged samples compared to young samples. Additionally, we observed changes in LD appearance and type in aged samples compared to young samples. Notably, we found differences in mitochondrial interactions with LDs, which could implicate that these contacts may be important for energetics in aging. Upon further investigation, we also found changes in mitochondrial and cristae structure for mitochondria interacting with LD lipids. Overall, these data define the nature of LD morphology and organelle-organelle contacts during aging and provide insight into LD contact site changes that interconnect biogerontology and mitochondrial functionality, metabolism, and bioactivity in aged BAT.

12.
Orthop J Sports Med ; 12(6): 23259671241252936, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38881856

RESUMEN

Background: Anterior cruciate ligament (ACL) injuries are one of the most common knee injuries in pediatric patients in the United States. The patient's primary spoken language may affect outcomes after ACL reconstruction (ACLR). Purpose/Hypothesis: The purpose of this study was to identify differences in ACLR outcomes between patients whose primary, preferred spoken language was either English or Spanish. It was hypothesized that there would be a difference in retear rates between patients preferring English versus Spanish. Study Design: Cohort study; Level of evidence, 3. Methods: A retrospective cohort study was performed on pediatric and adolescent patients who underwent ACLR at a single institution. Patients were divided into 2 cohorts based on their preferred spoken language: English or Spanish. All patients underwent either hamstring tendon or bone-patellar tendon-bone autograft ACLR performed by the same surgeon with the same postoperative rehabilitation protocols. Linear regression, chi-square tests, and multivariate logistic regression were used to determine if outcomes, graft tear, revision surgery, and contralateral injury differed between groups. Results: A total of 68 patients were identified: 33 patients whose preferred language was English and 35 patients whose preferred language was Spanish. The overall mean age of the patients was 16.4 ± 1.4 years (range, 13.2-20.5 years), and the mean follow-up time was 3.26 ± 1.98 years (range, 0.53-8.13 years). Patients who preferred Spanish were more likely than those who preferred English to experience graft tears requiring revision surgery after ACLR (P = .02; odds ratio [OR] = 5.81; adjusted OR = 1.94), at a tear rate of 14.3%. Conclusion: Patients who preferred to speak Spanish experienced higher graft tear rates when compared with patients who preferred speaking English, even after adjusting for sex, sport played, graft type, type of insurance, and time to surgery.

13.
Adipocyte ; 13(1): 2369777, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38937879

RESUMEN

Insulin resistance is caused by the abnormal secretion of proinflammatory cytokines in adipose tissue, which is induced by an increase in lipid accumulation in adipocytes, hepatocytes, and myocytes. The inflammatory pathway involves multiple targets such as nuclear factor kappa B, inhibitor of nuclear factor κ-B kinase, and mitogen-activated protein kinase. Vitamins are micronutrients with anti-inflammatory activities that have unclear mechanisms. The present study aimed to describe the putative mechanisms of vitamins involved in the inflammatory pathway of insulin resistance. The strategy to achieve this goal was to integrate data mining and analysis, target prediction, and molecular docking simulation calculations to support our hypotheses. Our results suggest that the multitarget activity of vitamins A, B1, B2, B3, B5, B6, B7, B12, C, D3, and E inhibits nuclear factor kappa B and mitogen-activated protein kinase, in addition to vitamins A and B12 against inhibitor of nuclear factor κ-B kinase. The findings of this study highlight the pharmacological potential of using an anti-inflammatory and multitarget treatment based on vitamins and open new perspectives to evaluate the inhibitory activity of vitamins against nuclear factor kappa B, mitogen-activated protein kinase, and inhibitor of nuclear factor κ-B kinase in an insulin-resistant context.


Asunto(s)
Resistencia a la Insulina , Simulación del Acoplamiento Molecular , FN-kappa B , Vitaminas , Humanos , Vitaminas/farmacología , FN-kappa B/metabolismo , Animales , Antiinflamatorios/farmacología , Antiinflamatorios/química , Proteínas Quinasas Activadas por Mitógenos/metabolismo
14.
bioRxiv ; 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38915644

RESUMEN

The kidney filters nutrient waste and bodily fluids from the bloodstream, in addition to secondary functions of metabolism and hormone secretion, requiring an astonishing amount of energy to maintain its functions. In kidney cells, mitochondria produce adenosine triphosphate (ATP) and help maintain kidney function. Due to aging, the efficiency of kidney functions begins to decrease. Dysfunction in mitochondria and cristae, the inner folds of mitochondria, is a hallmark of aging. Therefore, age-related kidney function decline could be due to changes in mitochondrial ultrastructure, increased reactive oxygen species (ROS), and subsequent alterations in metabolism and lipid composition. We sought to understand if there is altered mitochondrial ultrastructure, as marked by 3D morphological changes, across time in tubular kidney cells. Serial block facing-scanning electron microscope (SBF-SEM) and manual segmentation using the Amira software were used to visualize murine kidney samples during the aging process at 3 months (young) and 2 years (old). We found that 2-year mitochondria are more fragmented, compared to the 3-month, with many uniquely shaped mitochondria observed across aging, concomitant with shifts in ROS, metabolomics, and lipid homeostasis. Furthermore, we show that the mitochondrial contact site and cristae organizing system (MICOS) complex is impaired in the kidney due to aging. Disruption of the MICOS complex shows altered mitochondrial calcium uptake and calcium retention capacity, as well as generation of oxidative stress. We found significant, detrimental structural changes to aged kidney tubule mitochondria suggesting a potential mechanism underlying why kidney diseases occur more readily with age. We hypothesize that disruption in the MICOS complex further exacerbates mitochondrial dysfunction, creating a vicious cycle of mitochondrial degradation and oxidative stress, thus impacting kidney health.

15.
J Cell Physiol ; 239(8): e31293, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38770789

RESUMEN

The sorting and assembly machinery (SAM) Complex is responsible for assembling ß-barrel proteins in the mitochondrial membrane. Comprising three subunits, Sam35, Sam37, and Sam50, the SAM complex connects the inner and outer mitochondrial membranes by interacting with the mitochondrial contact site and cristae organizing system complex. Sam50, in particular, stabilizes the mitochondrial intermembrane space bridging (MIB) complex, which is crucial for protein transport, respiratory chain complex assembly, and regulation of cristae integrity. While the role of Sam50 in mitochondrial structure and metabolism in skeletal muscle remains unclear, this study aims to investigate its impact. Serial block-face-scanning electron microscopy and computer-assisted 3D renderings were employed to compare mitochondrial structure and networking in Sam50-deficient myotubes from mice and humans with wild-type (WT) myotubes. Furthermore, autophagosome 3D structure was assessed in human myotubes. Mitochondrial metabolic phenotypes were assessed using Gas Chromatography-Mass Spectrometry-based metabolomics to explore differential changes in WT and Sam50-deficient myotubes. The results revealed increased mitochondrial fragmentation and autophagosome formation in Sam50-deficient myotubes compared to controls. Metabolomic analysis indicated elevated metabolism of propanoate and several amino acids, including ß-Alanine, phenylalanine, and tyrosine, along with increased amino acid and fatty acid metabolism in Sam50-deficient myotubes. Furthermore, impairment of oxidative capacity was observed upon Sam50 ablation in both murine and human myotubes, as measured with the XF24 Seahorse Analyzer. Collectively, these findings support the critical role of Sam50 in establishing and maintaining mitochondrial integrity, cristae structure, and mitochondrial metabolism. By elucidating the impact of Sam50-deficiency, this study enhances our understanding of mitochondrial function in skeletal muscle.


Asunto(s)
Fibras Musculares Esqueléticas , Fibras Musculares Esqueléticas/metabolismo , Fibras Musculares Esqueléticas/ultraestructura , Animales , Humanos , Ratones , Proteínas Mitocondriales/metabolismo , Proteínas Mitocondriales/genética , Mitocondrias/metabolismo , Mitocondrias/ultraestructura , Membranas Mitocondriales/metabolismo , Mitocondrias Musculares/metabolismo , Mitocondrias Musculares/ultraestructura , Ratones Noqueados , Autofagia , Proteínas del Complejo de Importación de Proteínas Precursoras Mitocondriales
16.
STAR Protoc ; 5(2): 102997, 2024 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-38748884

RESUMEN

It is well-understood that the science, technology, engineering, and mathematics (STEM) fields have unique challenges that discourage recruiting and retaining underrepresented minorities. Research programs aimed at undergraduates have arisen as a critical mechanism for fostering innovation and addressing the challenges faced by underrepresented minorities. Here, we review various undergraduate research programs designed to provide exposure to undergraduates, with a focus on underrepresented minorities in STEM disciplines. We provide insight into selected programs' objectives, key features, potential limitations, and outcomes. We also offer recommendations for future improvements of each research program, particularly in the context of mentorship. These programs range from broad-reaching initiatives (e.g., Leadership Alliance) to more specific programs targeting underrepresented students. By offering a nuanced understanding of each program's structure, we seek to provide a brief overview of the landscape of diversity-focused STEM initiatives and a guide on how to run a research program effectively.


Asunto(s)
Matemática , Grupos Minoritarios , Ciencia , Estudiantes , Tecnología , Humanos , Grupos Minoritarios/educación , Tecnología/educación , Ciencia/educación , Matemática/educación , Investigación/educación , Universidades , Ingeniería/educación
17.
Drug Discov Today ; 29(7): 104046, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38810721

RESUMEN

In the current era of biological big data, which are rapidly populating the biological chemical space, in silico polypharmacology drug design approaches help to decode structure-multiple activity relationships (SMARts). Current computational methods can predict or categorize multiple properties simultaneously, which aids the generation, identification, curation, prioritization, optimization, and repurposing of molecules. Computational methods have generated opportunities and challenges in medicinal chemistry, pharmacology, food chemistry, toxicology, bioinformatics, and chemoinformatics. It is anticipated that computer-guided SMARts could contribute to the full automatization of drug design and drug repurposing campaigns, facilitating the prediction of new biological targets, side and off-target effects, and drug-drug interactions.


Asunto(s)
Biología Computacional , Polifarmacología , Humanos , Relación Estructura-Actividad , Biología Computacional/métodos , Diseño de Fármacos , Simulación por Computador , Reposicionamiento de Medicamentos/métodos , Animales
18.
bioRxiv ; 2024 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-38798364

RESUMEN

Alzheimer's Disease (AD) is a global health issue, affecting over 6 million in the United States, with that number expected to increase as the aging population grows. As a neurodegenerative disorder that affects memory and cognitive functions, it is well established that AD is associated with cardiovascular risk factors beyond only cerebral decline. However, the study of cerebrovascular techniques for AD is still evolving. Here, we provide reproducible methods to measure impedance-based pulse wave velocity (PWV), a marker of arterial stiffness, in the systemic vascular (aortic PWV) and in the cerebral vascular (cerebral PWV) systems. Using aortic impedance and this relatively novel technique of cerebral impedance to comprehensively describe the systemic vascular and the cerebral vascular systems, we examined the sex-dependent differences in 5x transgenic mice (5XFAD) with AD under normal and high-fat diet, and in wild-type mice under a normal diet. Additionally, we validated our method for measuring cerebrovascular impedance in a model of induced stress in 5XFAD. Together, our results show that sex and diet differences in wildtype and 5XFAD mice account for very minimal differences in cerebral impedance. Interestingly, 5XFAD, and not wildtype, male mice on a chow diet show higher cerebral impedance, suggesting pathological differences. Opposingly, when we subjected 5XFAD mice to stress, we found that females showed elevated cerebral impedance. Using this validated method of measuring impedance-based aortic and cerebral PWV, future research may explore the effects of modifying factors including age, chronic diet, and acute stress, which may mediate cardiovascular risk in AD.

19.
Cureus ; 16(3): e55584, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38576656

RESUMEN

Patients with end-stage renal disease (ESRD) who undergo kidney transplantation are at an increased risk of developing surgical and/or medical complications. Posterior reversible encephalopathy syndrome (PRES) is a rare complication that occurs in 0.34% of kidney transplant patients. It is characterized by a combination of neurological manifestations, risk factors, and characteristic radiological findings in neuroimaging studies. The development of PRES has been associated with various medical conditions and factors, including hypertension, the use of cytotoxic and immunosuppressive drugs, acute or chronic kidney disease, pre-eclampsia/eclampsia, autoimmune diseases, and solid organ and bone marrow transplantation. This report presents the case of a 19-year-old woman diagnosed with ESRD on hemodialysis due to lupus nephritis who experienced an episode of PRES with intraparenchymal hemorrhage during the postoperative period of kidney transplantation. The case emphasizes the importance of closely monitoring these patients during this period to enable early diagnosis and timely treatment of complications, ensuring a favorable prognosis.

20.
J Cell Physiol ; 239(7): e31227, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38462753

RESUMEN

While some established undergraduate summer programs are effective across many institutions, these programs may only be available to some principal investigators or may not fully address the diverse needs of incoming undergraduates. This article outlines a 10-week science, technology, engineering, mathematics, and medicine (STEMM) education program designed to prepare undergraduate students for graduate school through a unique model incorporating mentoring dyads and triads, cultural exchanges, and diverse activities while emphasizing critical thinking, research skills, and cultural sensitivity. Specifically, we offer a straightforward and adaptable guide that we have used for mentoring undergraduate students in a laboratory focused on mitochondria and microscopy, but which may be customized for other disciplines. Key components include self-guided projects, journal clubs, various weekly activities such as mindfulness training and laboratory techniques, and a focus on individual and cultural expression. Beyond this unique format, this 10-week program also seeks to offer an intensive research program that emulates graduate-level experiences, offering an immersive environment for personal and professional development, which has led to numerous achievements for past students, including publications and award-winning posters.


Asunto(s)
Ingeniería , Humanos , Ingeniería/educación , Estudiantes , Ciencia/educación , Matemática/educación , Tecnología/educación , Curriculum , Universidades , Tutoría/métodos
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