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1.
Curr Issues Mol Biol ; 45(4): 2965-2971, 2023 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-37185718

RESUMO

Alopecia Areata (AA) is a multifactorial, dermatological disease characterized by non-scarring hair loss. Alterations in candidate genes, such as HR (Hairless), could represent a risk factor for its development. The aim of this study was to search for and analyze variants in exons 3, 15 and 17 of the HR gene in Mexican patients with AA. A total of 30 samples from both AA patients and healthy donors were analyzed in this study. Exons were amplified and sequenced using the Sanger method. Descriptive statistics and χ2 tests were used in the analysis of clinical-demographic characteristics and the comparison of allelic/genotypical frequencies between groups, respectively. The effect on protein function for the non-synonymous variants was determined with three bioinformatics servers. Three gene variants were identified in the HR gene of the evaluated patients. The benign polymorphism c.1010G > A p.(Gly337Asp) (rs12675375) had been previously reported, whereas the variants c.750G > A p.(Gln250Gln) and c.3215T > A (Val1072AGlu) have not been described in other world populations. Both non-synonymous variants proved to be significant (p ≤ 0.05). The variant c.3215T > A p.(Val1072Glu) is of particular interest due to its deleterious effect on the structure and function of the protein; therefore, it could be considered a risk factor for the development of AA.

2.
Genet Med ; 24(5): 1008-1016, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35227607

RESUMO

PURPOSE: Pancreatic cancer (PC) risk is increased in families, but PC risk and risk perception have been understudied when both parents have cancer. METHODS: An unbiased method defining cancer triads (proband with PC and both parents with cancer) in a prospective registry estimated risk of PC to probands' siblings in triad group 1 (no parent with PC), group 2 (1 parent with PC), and group 3 (both parents with PC). We estimated standardized incidence ratios (SIRs) using a Surveillance, Epidemiology, and End Results (SEER) reference. We also estimated the risk when triad probands carried germline pathogenic/likely pathogenic variants in any of the 6 PC-associated genes (ATM, BRCA1, BRCA2, CDKN2A, MLH1, and TP53). PC risk perception/concern was surveyed in siblings and controls. RESULTS: Risk of PC was higher (SIR = 3.5; 95% CI = 2.2-5.2) in 933 at-risk siblings from 297 triads. Risk increased by triad group: 2.8 (95% CI = 1.5-4.5); 4.5 (95% CI = 1.6-9.7); and 21.2 (95% CI = 4.3-62.0). SIR in variant-negative triads was 3.0 (95% CI = 1.6-5.0), whereas SIR in variant-positive triads was 10.0 (95% CI = 3.2-23.4). Siblings' perceived risk/concern of developing PC increased by triad group. CONCLUSION: Sibling risks were 2.8- to 21.2-fold higher than that of the general population. Positive variant status increased the risk in triads. Increasing number of PC cases in a triad was associated with increased concern and perceived PC risk.


Assuntos
Neoplasias Pancreáticas , Irmãos , Família , Predisposição Genética para Doença , Humanos , Neoplasias Pancreáticas/epidemiologia , Neoplasias Pancreáticas/genética , Neoplasias Pancreáticas
3.
J Gen Intern Med ; 37(2): 298-307, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-33939079

RESUMO

BACKGROUND: Despite substantial research on medical student mistreatment, there is scant quantitative data on microaggressions in US medical education. OBJECTIVE: To assess US medical students' experiences of microaggressions and how these experiences influenced students' mental health and medical school satisfaction. DESIGN AND PARTICIPANTS: We conducted a cross-sectional, online survey of US medical students' experiences of microaggressions. MAIN MEASURES: The primary outcome was a positive depression screen on the 2-item Patient Health Questionnaire (PHQ-2). Medical school satisfaction was a secondary outcome. We used logistic regression to model the association between respondents' reported microaggression frequency and the likelihood of a positive PHQ-2 screen. For secondary outcomes, we used the chi-squared statistic to test associations between microaggression exposure and medical school satisfaction. KEY RESULTS: Out of 759 respondents, 61% experienced at least one microaggression weekly. Gender (64.4%), race/ethnicity (60.5%), and age (40.9%) were the most commonly cited reasons for experiencing microaggressions. Increased microaggression frequency was associated with a positive depression screen in a dose-response relationship, with second, third, and fourth (highest) quartiles of microaggression frequency having odds ratios of 2.71 (95% CI: 1-7.9), 3.87 (95% CI: 1.48-11.05), and 9.38 (95% CI: 3.71-26.69), relative to the first quartile. Medical students who experienced at least one microaggression weekly were more likely to consider medical school transfer (14.5% vs 4.7%, p<0.001) and withdrawal (18.2% vs 5.7%, p<0.001) and more likely to believe microaggressions were a normal part of medical school culture (62.3% vs 32.1%) compared to students who experienced microaggressions less frequently. CONCLUSIONS: To our knowledge, this is the largest study on the experiences and influences of microaggressions among a national sample of US medical students. Our major findings were that microaggressions are frequent occurrences and that the experience of microaggressions was associated with a positive depression screening and decreased medical school satisfaction.


Assuntos
Estudantes de Medicina , Estudos Transversais , Depressão/diagnóstico , Depressão/epidemiologia , Humanos , Microagressão , Satisfação Pessoal
4.
Dermatol Ther ; 35(5): e15432, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35266258

RESUMO

The widespread use of PD-1 inhibitors to treat various solid tumors has brought certain challenges for the clinician, including immune-related adverse events (irAEs). Cutaneous toxicities are among the most observed irAEs. Bullous and lichenoid dermatoses following PD-1 inhibitor therapy have been described. Here we report a novel case of lichen planus pemphigoides, featuring characteristics of both bullous pemphigoid and lichen planus, in a patient treated with nivolumab for renal cell carcinoma. We subsequently review all three cutaneous conditions which may arise in the context of PD-1 inhibitor therapy.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Líquen Plano , Erupções Liquenoides , Carcinoma de Células Renais/tratamento farmacológico , Feminino , Humanos , Inibidores de Checkpoint Imunológico , Líquen Plano/induzido quimicamente , Líquen Plano/diagnóstico , Líquen Plano/tratamento farmacológico , Erupções Liquenoides/induzido quimicamente , Erupções Liquenoides/diagnóstico , Masculino , Nivolumabe/efeitos adversos
5.
J Am Chem Soc ; 142(22): 9896-9901, 2020 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-32412752

RESUMO

Polyketide synthase (PKS) engineering is an attractive method to generate new molecules such as commodity, fine and specialty chemicals. A significant challenge is re-engineering a partially reductive PKS module to produce a saturated ß-carbon through a reductive loop (RL) exchange. In this work, we sought to establish that chemoinformatics, a field traditionally used in drug discovery, offers a viable strategy for RL exchanges. We first introduced a set of donor RLs of diverse genetic origin and chemical substrates  into the first extension module of the lipomycin PKS (LipPKS1). Product titers of these engineered unimodular PKSs correlated with chemical structure similarity between the substrate of the donor RLs and recipient LipPKS1, reaching a titer of 165 mg/L of short-chain fatty acids produced by the host Streptomyces albus J1074. Expanding this method to larger intermediates that require bimodular communication, we introduced RLs of divergent chemosimilarity into LipPKS2 and determined triketide lactone production. Collectively, we observed a statistically significant correlation between atom pair chemosimilarity and production, establishing a new chemoinformatic method that may aid in the engineering of PKSs to produce desired, unnatural products.


Assuntos
Biologia Computacional , Policetídeo Sintases/química , Engenharia de Proteínas , Estrutura Molecular , Policetídeo Sintases/metabolismo
6.
Metab Eng ; 61: 389-396, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32771628

RESUMO

Traditionally engineered to produce novel bioactive molecules, Type I modular polyketide synthases (PKSs) could be engineered as a new biosynthetic platform for the production of de novo fuels, commodity chemicals, and specialty chemicals. Previously, our investigations manipulated the first module of the lipomycin PKS to produce short chain ketones, 3-hydroxy acids, and saturated, branched carboxylic acids. Building upon this work, we have expanded to multi-modular systems by engineering the first two modules of lipomycin to generate unnatural polyketides as potential biofuels and specialty chemicals in Streptomyces albus. First, we produce 20.6 mg/L of the ethyl ketone, 4,6 dimethylheptanone through a reductive loop exchange in LipPKS1 and a ketoreductase knockouts in LipPKS2. We then show that an AT swap in LipPKS1 and a reductive loop exchange in LipPKS2 can produce the potential fragrance 3-isopropyl-6-methyltetrahydropyranone. Highlighting the challenge of maintaining product fidelity, in both bimodular systems we observed side products from premature hydrolysis in the engineered first module and stalled dehydration in reductive loop exchanges. Collectively, our work expands the biological design space and moves the field closer to the production of "designer" biomolecules.


Assuntos
Proteínas de Bactérias , Escherichia coli , Engenharia Metabólica , Policetídeo Sintases , Streptomyces/genética , Proteínas de Bactérias/genética , Proteínas de Bactérias/metabolismo , Escherichia coli/enzimologia , Escherichia coli/genética , Policetídeo Sintases/genética , Policetídeo Sintases/metabolismo , Streptomyces/enzimologia
7.
Food Technol Biotechnol ; 57(4): 544-553, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32123516

RESUMO

Mezcal is a distillate produced by spontaneous fermentation of the must obtained from stalks of Agave spp. plants that are cooked and pressed. Agave must contains a high amount of fructose and phenolic compounds, and fermentation usually occurs under stressful (and uncontrolled) environmental conditions. Yeasts capable of growing under such conditions usually display advantageous biological and industrial traits for stress tolerance such as flocculation. In this study, seven Saccharomyces cerevisiae strains isolated from mezcal must were exposed to temperatures ranging between 10 and 40 °C, and to different sugar sources (fructose or glucose). Yeasts grown in fructose increased their stress tolerance, determined by colony count in a microdrop assay, under low temperature (10 °C) compared to the growth at 40 °C on solid cultures. The most stress-tolerant mezcal strain (Sc3Y8) and a commercial wine (Fermichamp) strain, used as control, were grown under fermentation conditions and exposed to long-term temperature stress to determine their performance and their potential for flocculation. Compared to glucose, fermentation on fructose increased the metabolite accumulation at the end of culture, particularly at 40 °C, with 2.3, 1.3 and 3.4 times more glycerol (8.6 g/L), ethanol (43.6 g/L) and acetic acid (7.3 g/L), respectively. Using confocal microscopy analysis, we detected morphological changes such as aggregation and wall recognition at the level of budding scars in yeast, particularly in the Sc3Y8 strain when it was exposed to 40 °C. The analysis confirmed that this mezcal strain was positive for flocculation in the presence of Ca2+ ions. Analysis of FLO1, FLO5 and FLO11 gene expression implicated in flocculation in both Saccharomyces strains showed a strong transcriptional induction, mainly of the FLO5 gene in the mezcal Sc3Y8 strain.

8.
Dermatol Online J ; 25(2)2019 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-30865412

RESUMO

Clinicians have a tendency to dismiss patients with psychiatric illness like skin picking disorder without assessing completely for organic disease. Patients with psychocutaneous disease have the potential to develop true dermatopathology and should always be examined thoroughly. We describe a case of skin picking disorder with underlying pilomatricoma. The patient met criteria for skin picking disorder and had been prescribed numerous topical treatments without efficacy by countless physicians over 18 years. In addition, a pilomatricoma was discovered within a self-inflicted ulcer. Pilomatricomas can rarely result from trauma and develop ossification, both of which were true of this lesion. The prevalence of skin picking disorder proves more pervasive than previously realized and it has only recently been recognized by the DSM-5 as an independent diagnosis. Therefore, it is necessary to clarify the diagnosis as well as remind clinicians not to discount underlying dermatologic disease. In addition to the risk of bleeding and infection, these patients are at risk for masking neoplasms, which should be removed. Our case emphasizes the need for thorough examination of patients with psychocutaneous disease and further work-up when necessary to prevent permanent disfigurement.


Assuntos
Neoplasias Faciais/complicações , Transtorno Obsessivo-Compulsivo/psicologia , Ossificação Heterotópica/complicações , Pilomatrixoma/complicações , Neoplasias Cutâneas/complicações , Úlcera Cutânea/etiologia , Adulto , Ansiedade/psicologia , Bochecha , Neoplasias Faciais/diagnóstico , Feminino , Doenças do Cabelo/complicações , Doenças do Cabelo/diagnóstico , Humanos , Ossificação Heterotópica/diagnóstico , Pilomatrixoma/diagnóstico , Neoplasias Cutâneas/diagnóstico
9.
J Cutan Pathol ; 43(3): 270-5, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26454140

RESUMO

Langerhans cell histocytosis (LCH) and Erdheim-Chester disease are two rare histiocytic disorders. Their occurrence in the same patient is more infrequent, but has been described. We report a case of a 38-year-old woman who presented with a diagnosis of single system cutaneous LCH. Subsequently, she developed multiple papules on her extremities consistent with a non-LCH xanthogranuloma type lesion. BRAF(V600E) mutation immunostain, VE1 was positive in the skin lesion, which was confirmed by molecular polymerase chain reaction (PCR) studies, initiating a complete systemic workup for Erdheim-Chester disease. Systemic involvement was confirmed with bilateral sclerotic bone lesions and retroperitoneal and pelvic fibrosing disease. She was also found to have a BRAF(V600E) mutation positive papillary thyroid carcinoma. New suspicious cutaneous lesions presenting in patients with a history of LCH need to be biopsied. A BRAF(V600E) mutation in a non-LCH histiocytic lesion with a xanthogranuloma phenotype (CD163/CD68/CD14/fascin/Factor 13a) should prompt an Erdheim-Chester disease workup. This is a unique case of a woman with BRAF(V600E) mutation positive Erdheim-Chester disease and cutaneous LCH, while also being, to our knowledge, the first reported case in the English literature of it occurring in a patient with a BRAF(V600E) mutation positive papillary thyroid carcinoma.


Assuntos
Carcinoma , Doença de Erdheim-Chester , Histiocitose de Células de Langerhans , Mutação de Sentido Incorreto , Proteínas Proto-Oncogênicas B-raf , Neoplasias da Glândula Tireoide , Adulto , Substituição de Aminoácidos , Carcinoma/genética , Carcinoma/metabolismo , Carcinoma/patologia , Carcinoma Papilar , Doença de Erdheim-Chester/genética , Doença de Erdheim-Chester/metabolismo , Doença de Erdheim-Chester/patologia , Feminino , Histiocitose de Células de Langerhans/genética , Histiocitose de Células de Langerhans/metabolismo , Histiocitose de Células de Langerhans/patologia , Humanos , Proteínas Proto-Oncogênicas B-raf/genética , Proteínas Proto-Oncogênicas B-raf/metabolismo , Neoplasias Cutâneas/genética , Neoplasias Cutâneas/metabolismo , Neoplasias Cutâneas/patologia , Câncer Papilífero da Tireoide , Neoplasias da Glândula Tireoide/genética , Neoplasias da Glândula Tireoide/metabolismo , Neoplasias da Glândula Tireoide/patologia
12.
Artigo em Inglês | MEDLINE | ID: mdl-38568393

RESUMO

We tested the hypothesis that children in New York City (NYC) with an immigrant parent were more likely to lack health insurance and report poorer parent-rated health compared to those of US-born parents in this serial, cross-sectional study using existing data from 2009 to 2017 among children age < 12 years in two NYC health surveys. Main outcomes were parent-reported responses for (1) child insurance coverage and (2) child general health status. In multivariable logistic regression models, we estimated likelihood of outcomes for children of immigrants compared to those of US-born parents, adjusting for child, parent, and household characteristics. We included 2,637 children in 2009 and 7,042 in 2017 in NYC. In 2017, children of immigrant parents were more likely to experience uninsurance than children of US-born parents [adjusted odds ratio (AOR) 2.36 (95% CI: 1.05-5.31)]. Compared to children of US-born parents, children with an immigrant parent were more likely to have a gap in insurance coverage in both 2009 (AOR 1.88; 95% CI: 1.08-3.27) and 2017 (AOR 1.60; 95% CI: 1.06-2.41). Although more children of immigrants had poor/fair health than those of US-born parents in both years, differences were not statistically significant after adjusting for covariates. Our findings among a sample of children eligible for health insurance suggest policies intended to expand child health care access did not equitably reach children of immigrants despite their eligibility for health insurance. Tailored interventions for children of immigrants are needed to mitigate disparities in health insurance coverage.

13.
Front Public Health ; 12: 1364323, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38774047

RESUMO

Background: This study examines the lasting impact of historical redlining on contemporary neurosurgical care access, highlighting the need for equitable healthcare in historically marginalized communities. Objective: To investigate how redlining affects neurosurgeon distribution and reimbursement in U.S. neighborhoods, analyzing implications for healthcare access. Methods: An observational study was conducted using data from the Center for Medicare and Medicaid Services (CMS) National File, Home Owner's Loan Corporation (HOLC) neighborhood grades, and demographic data to evaluate neurosurgical representation across 91 U.S. cities, categorized by HOLC Grades (A, B, C, D) and gentrification status. Results: Of the 257 neighborhoods, Grade A, B, C, and D neighborhoods comprised 5.40%, 18.80%, 45.8%, and 30.0% of the sample, respectively. Grade A, B, and C neighborhoods had more White and Asian residents and less Black residents compared to Grade D neighborhoods (p < 0.001). HOLC Grade A (OR = 4.37, 95%CI: 2.08, 9.16, p < 0.001), B (OR = 1.99, 95%CI: 1.18, 3.38, p = 0.011), and C (OR = 2.37, 95%CI: 1.57, 3.59, p < 0.001) neighborhoods were associated with a higher representation of neurosurgeons compared to Grade D neighborhoods. Reimbursement disparities were also apparent: neurosurgeons practicing in HOLC Grade D neighborhoods received significantly lower reimbursements than those in Grade A neighborhoods ($109,163.77 vs. $142,999.88, p < 0.001), Grade B neighborhoods ($109,163.77 vs. $131,459.02, p < 0.001), and Grade C neighborhoods ($109,163.77 vs. $129,070.733, p < 0.001). Conclusion: Historical redlining continues to shape access to highly specialized healthcare such as neurosurgery. Efforts to address these disparities must consider historical context and strive to achieve more equitable access to specialized care.


Assuntos
Neurocirurgiões , Humanos , Estados Unidos , Neurocirurgiões/estatística & dados numéricos , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Características da Vizinhança , Características de Residência/estatística & dados numéricos , Disparidades em Assistência à Saúde/estatística & dados numéricos
14.
Artigo em Inglês | MEDLINE | ID: mdl-38528179

RESUMO

Stroke is a major health concern in the USA, disproportionately affecting socioeconomically disadvantaged groups. This study investigates the link between persistent poverty and stroke mortality rates in residents aged 65 and above, positing that sustained economic challenges at the county level correlate with an increase in stroke-related deaths. Persistent poverty refers to a long-term state where a significant portion of a population lives below the poverty threshold for an extended period, typically measured over several decades. It captures the chronic nature of economic hardship faced by a community across multiple generations. Utilizing data from the CDC Wonder database and the American Community Survey, we conducted a comprehensive analysis across US counties, differentiating them by persistent poverty status. Our results indicate a statistically significant link between persistent poverty and increased mortality from ischemic and hemorrhagic strokes; counties afflicted by long-standing poverty were associated with an additional 33.49 ischemic and 8.16 hemorrhagic stroke deaths per 100,000 residents annually compared to their wealthier counterparts. These disparities persisted when controlling for known stroke risk factors and other socioeconomic variables. These results highlight the need for targeted public health strategies and interventions to address the disparities in stroke mortality rates and the broader implications for healthcare equity. The study underscores the vital role of socioeconomic context in health outcomes and the urgency of addressing long-term poverty as a key determinant of public health.

15.
Front Public Health ; 12: 1341212, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38799679

RESUMO

Background and objectives: This study investigates geographic disparities in aneurysmal subarachnoid hemorrhage (aSAH) care for Black patients and aims to explore the association with segregation in treatment facilities. Understanding these dynamics can guide efforts to improve healthcare outcomes for marginalized populations. Methods: This cohort study evaluated regional differences in segregation for Black patients with aSAH and the association with geographic variations in disparities from 2016 to 2020. The National Inpatient Sample (NIS) database was queried for admission data on aSAH. Black patients were compared to White patients. Segregation in treatment facilities was calculated using the dissimilarity (D) index. Using multivariable logistic regression models, the regional disparities in aSAH treatment, functional outcomes, mortality, and end-of-life care between Black and White patients and the association of geographical segregation in treatment facilities was assessed. Results: 142,285 Black and White patients were diagnosed with aSAH from 2016 to 2020. The Pacific division (D index = 0.55) had the greatest degree of segregation in treatment facilities, while the South Atlantic (D index = 0.39) had the lowest. Compared to lower segregation, regions with higher levels of segregation (global F test p < 0.001) were associated a lower likelihood of mortality (OR 0.91, 95% CI 0.82-1.00, p = 0.044 vs. OR 0.75, 95% CI 0.68-0.83, p < 0. 001) (p = 0.049), greater likelihood of tracheostomy tube placement (OR 1.45, 95% CI 1.22-1.73, p < 0.001 vs. OR 1.87, 95% CI 1.59-2.21, p < 0.001) (p < 0. 001), and lower likelihood of receiving palliative care (OR 0.88, 95% CI 0.76-0.93, p < 0.001 vs. OR 0.67, 95% CI 0.59-0.77, p < 0.001) (p = 0.029). Conclusion: This study demonstrates regional differences in disparities for Black patients with aSAH, particularly in end-of-life care, with varying levels of segregation in regional treatment facilities playing an associated role. The findings underscore the need for targeted interventions and policy changes to address systemic healthcare inequities, reduce segregation, and ensure equitable access to high-quality care for all patients.


Assuntos
Negro ou Afro-Americano , Disparidades em Assistência à Saúde , Hemorragia Subaracnóidea , Humanos , Hemorragia Subaracnóidea/mortalidade , Hemorragia Subaracnóidea/terapia , Estados Unidos , Feminino , Masculino , Pessoa de Meia-Idade , Disparidades em Assistência à Saúde/estatística & dados numéricos , Negro ou Afro-Americano/estatística & dados numéricos , Adulto , Idoso , Estudos de Coortes , População Branca/estatística & dados numéricos , Segregação Social
16.
Foods ; 13(11)2024 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-38890883

RESUMO

Listeria (L.) monocytogenes is an opportunistic foodborne pathogen that causes listeriosis in humans and animals, reaching up to 30% case mortality. There are only a few reports in Mexico about the L. monocytogenes strains found in various foods. The aim of this study was to determine the prevalence of L. monocytogenes, serogroups, virulence genes, and antimicrobial resistance in different foods from Reynosa, Tamaulipas, Mexico. L. monocytogenes strains were characterized by microbiological and molecular methods. Susceptibility to 12 antibiotics was determined according to CLSI and EUCAST. A total of 300 samples of seafood, pasteurized and raw milk, cheese, beef, and chicken were collected from supermarkets and retail markets. The presence of L. monocytogenes was detected in 5.6% of the samples. Most strains belonged to serogroups 4b, 4d, and 4e (68.4%). All strains presented a minimum of four virulence genes; the most common were actA, hly, and plcB (92.1%). A high percentage of antimicrobial susceptibility was observed, with resistance only to STX-TMP (78.9%), STR (26.3%), MEM (21.0%), and E (2.6%). These results show that the foods in Reynosa, Tamaulipas, are a reservoir of L. monocytogenes and represent a potential health risk.

17.
Antonie Van Leeuwenhoek ; 103(4): 833-43, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23271642

RESUMO

Mezcal from Tamaulipas (México) is produced by spontaneous alcoholic fermentation using Agave spp. musts, which are rich in fructose. In this study eight Saccharomyces cerevisiae isolates obtained at the final stage of fermentation from a traditional mezcal winery were analysed in three semi-synthetic media. Medium M1 had a sugar content of 100 g l(-1) and a glucose/fructose (G/F) of 9:1. Medium M2 had a sugar content of 100 g l(-1) and a G/F of 1:9. Medium M3 had a sugar content of 200 g l(-1) and a G/F of 1:1. In the three types of media tested, the highest ethanol yield was obtained from the glucophilic strain LCBG-3Y5, while strain LCBG-3Y8 was highly resistant to ethanol and the most fructophilic of the mezcal strains. Strain LCBG-3Y5 produced more glycerol (4.4 g l(-1)) and acetic acid (1 g l(-1)) in M2 than in M1 (1.7 and 0.5 g l(-1), respectively), and the ethanol yields were higher for all strains in M1 except for LCBG-3Y5, -3Y8 and the Fermichamp strain. In medium M3, only the Fermichamp strain was able to fully consume the 100 g of fructose l(-1) but left a residual 32 g of glucose l(-1). Regarding the hexose transporters, a high number of amino acid polymorphisms were found in the Hxt1p sequences. Strain LCBG-3Y8 exhibited eight unique amino acid changes, followed by the Fermichamp strain with three changes. In Hxt3p, we observed nine amino acid polymorphisms unique for the Fermichamp strain and five unique changes for the mezcal strains.


Assuntos
Etanol/metabolismo , Hexoses/metabolismo , Saccharomyces cerevisiae/metabolismo , Ácido Acético/metabolismo , Agave/metabolismo , Agave/microbiologia , Meios de Cultura/química , DNA Fúngico/química , DNA Fúngico/genética , DNA Ribossômico/química , DNA Ribossômico/genética , Fermentação , Genes de RNAr , Glicerol/metabolismo , Dados de Sequência Molecular , RNA Fúngico/genética , RNA Ribossômico/genética , Saccharomyces cerevisiae/classificação , Saccharomyces cerevisiae/crescimento & desenvolvimento , Saccharomyces cerevisiae/isolamento & purificação , Análise de Sequência de DNA
18.
Cureus ; 15(5): e38765, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37303418

RESUMO

Endometriosis is a benign gynecological condition that elicits chronic pain in 2-10% of reproductive-age women in the United States and exists in approximately 50% of women with infertility. It creates complications such as hemorrhage and uterine rupture. Historically, the gynecologic symptoms of endometriosis have been associated with economic strain and inferior quality of life. It is suspected that endometriosis diagnosis and treatment are affected by health disparities throughout gynecological care. The goal of this review was to collate and report the current evidence on potential healthcare disparities related to endometriosis diagnosis, treatment, and care across race, ethnicity, and socioeconomic status. This scoping review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and searched the Excerpta Medica Database (EMBASE), Medline Ovid, Cumulated Index to Nursing and Allied Health Literature (CINAHL), Web of Science, and PsycInfo databases for relevant articles on the topic. Eligibility was established a priori to include articles written in English, published between 2015-2022, and reported on cohort, cross-sectional, or experimental studies conducted in the United States. Initially, 328 articles were found, and after screening and quality assessment, four articles were retained for the final review. Results indicated that White women had higher rates of minimally invasive procedures versus open abdominal surgeries than non-White women. White women also had fewer surgical complications compared to all other races and ethnicities. Black women had higher rates of perioperative complications, higher mortality, and spent more time in the perioperative stage than any other race or ethnicity. In the management of endometriosis, the limited research available showed that all non-White women encountered an increased risk of perioperative and postoperative complications compared to White women. More research is needed to explore diagnostic and treatment disparities beyond surgical management, socioeconomic barriers, and improved representation of racial and ethnic minority women.

19.
Neurocrit Care ; 17(2): 268-70, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22528275

RESUMO

BACKGROUND: Plantar flexion with plantar stimulation has been well described in brain death, and is compatible with brain death. However, plantar flexion with stimulation to the dorsal surface of the foot has not been reported previously in brain dead patients. METHODS: Case report with Technetium-99 m hexamethylpropyleneamine oxime brain scan and video. RESULTS: A 46-year-old woman suffered severe anoxic brain injury following massive pulmonary embolism 5 days after arthroscopic knee surgery. Neurologic examination was consistent with brain death, with the exception of plantar flexion when noxious stimulation was applied to the dorsal surface of the great toe on each side. Ancillary testing with a technetium-99 m nuclear scan demonstrated absence of cerebral perfusion, supporting the diagnosis of brain death. CONCLUSIONS: Noxious stimulation to the dorsal surface of the foot may trigger spinally mediated plantar flexion in patients with brain death.


Assuntos
Morte Encefálica/diagnóstico , , Reflexo , Medula Espinal , Morte Encefálica/diagnóstico por imagem , Feminino , Humanos , Hipóxia Encefálica/diagnóstico por imagem , Hipóxia Encefálica/etiologia , Pessoa de Meia-Idade , Imagem de Perfusão , Embolia Pulmonar/complicações , Compostos Radiofarmacêuticos , Tecnécio
20.
Cureus ; 14(12): e32437, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36644033

RESUMO

The prolonged coronavirus disease 2019 (COVID-19) pandemic has raised concerns about the failures in the public health measures used to manage the spread of this deadly virus. This review focuses its attention on research papers that at their core highlight the individual public health measures instituted by organizations, institutions, and the government of the United States (US) since the start of the COVID-19 pandemic and that were published in 2019 to 2022. Together, these sources help paint a well-rounded view of the US management of this pandemic so that conclusions may be drawn from mistakes that were made and this country may respond better in the future to such situations. This paper is unique because it highlights the areas where improvement is needed, whereas other published work describes the measures taken and how they were carried out, not the failures, which leaves a gap in the literature that this paper hopes to fill. Through a deep dive into public health measures, seven areas in which improvements could be made were pinpointed by the authors. Such measures included mask mandates, social distancing, lockdown/quarantine, hand hygiene, COVID-19 testing, travel screening, and vaccine hesitancy. In exploring each measure, a discussion was carried out about its benefits and shortcomings in alleviating the ramifications of a global pandemic. In addition to the poor supply chain for critical products like personal protective equipment (PPE), the miscommunication between states and federal policies did not allow for the entirety of the US to respond cohesively in the face of the COVID-19 pandemic. This general review is crucial to know what is working and what needs to be changed to increase the benefits provided to the population.

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