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1.
Am J Sports Med ; : 3635465241233161, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38622858

RESUMO

BACKGROUND: Rehabilitation after anterior cruciate ligament ACL reconstruction (ACLR) is crucial for safe return to play (RTP) and reducing the chances of a reinjury. Yet, there is no consensus on the ideal functional tests to assess rehabilitation progress in soccer players after ACLR. PURPOSE: The primary objective was to highlight the existing gap in the literature concerning the most effective standardized rehabilitation protocols and testing for facilitating successful RTP among soccer players. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: A systematic review using PubMed, Embase, and the Cochrane Central Register of Controlled Trials (CENTRAL) was conducted. Inclusion criteria encompassed original studies (level of evidence 1-4) that examined rehabilitation protocols, metrics of knee rehabilitation, and clinical outcomes after ACLR in soccer players. RESULTS: This review incorporated 23 studies, predominantly retrospective case series, with a total number of 874 soccer players who underwent ACLR and rehabiliation. 5 (21.7%) studies utilized an accelerated rehabilitation protocol, while 7 (30.4%) of studies utilized a criterion-based rehabilitation. A wide heterogeneity of data was extracted including functional tests of rehabilitation and RTP such as strength test batteries, hop test batteries, and movement quality assessments. Of the 23 selected studies, 2 (8.7%) used all 3 test batteries, 8 (34.8%) used 2 test batteries, 12 (52.2%) used 1 test battery, and 1 (4.3%) used 0 of the test batteries. The mean time between surgery and RTP ranged from 3 to 8 months with only 2 (8.7%) studies reporting complications after ACLR. Lastly, out of the total studies examined, 9 (39.1%) assessed patient-reported outcome measures (PROMs), all of which demonstrated significant improvement from the initial assessment to the final follow up. CONCLUSION: Soccer-specific rehabilitation after ACLR lacks standardization. Even though many studies have assessed protocols for optimal RTP and reduced secondary ACL injuries, there is a gap in the literature regarding the most effective protocols and RTP testing. The methodology reported by Kyritsis et al could serve as a foundation for future prospective randomized multicenter studies to establish a standard rehabilitation protocol and enable a successful return to soccer.

2.
JAMA Dermatol ; 2024 Apr 24.
Artigo em Inglês | MEDLINE | ID: mdl-38656294

RESUMO

Importance: Inconsistent reporting of outcomes in clinical trials of rosacea is impeding and likely preventing accurate data pooling and meta-analyses. There is a need for standardization of outcomes assessed during intervention trials of rosacea. Objective: To develop a rosacea core outcome set (COS) based on key domains that are globally relevant and applicable to all demographic groups to be used as a minimum list of outcomes for reporting by rosacea clinical trials, and when appropriate, in clinical practice. Evidence Review: A systematic literature review of rosacea clinical trials was conducted. Discrete outcomes were extracted and augmented through discussions and focus groups with key stakeholders. The initial list of 192 outcomes was refined to identify 50 unique outcomes that were rated through the Delphi process Round 1 by 88 panelists (63 physicians from 17 countries and 25 patients with rosacea in the US) on 9-point Likert scale. Based on feedback, an additional 11 outcomes were added in Round 2. Outcomes deemed to be critical for inclusion (rated 7-9 by ≥70% of both groups) were discussed in consensus meetings. The outcomes deemed to be most important for inclusion by at least 85% of the participants were incorporated into the final core domain set. Findings: The Delphi process and consensus-building meetings identified a final core set of 8 domains for rosacea clinical trials: ocular signs and symptoms; skin signs of disease; skin symptoms; overall severity; patient satisfaction; quality of life; degree of improvement; and presence and severity of treatment-related adverse events. Recommendations were also made for application in the clinical setting. Conclusions and Relevance: This core domain set for rosacea research is now available; its adoption by researchers may improve the usefulness of future trials of rosacea therapies by enabling meta-analyses and other comparisons across studies. This core domain set may also be useful in clinical practice.

3.
J Am Acad Dermatol ; 90(6): 1243-1245, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38296200
4.
J Cutan Pathol ; 51(4): 306-310, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38124386

RESUMO

BACKGROUND: Diffractive microscopy creates contrast within samples that are otherwise uniform under bright light. This technique can highlight subtle differences in refractive indices within birefringent samples containing varying amounts of mature collagen. Dermatofibroma (DF) and dermatofibrosarcoma protuberans (DFSP) possess differences in their mature collagen content and, therefore, may be distinguishable using diffractive microscopy. METHODS: Two hundred forty-two DF and 85 DFSP hematoxylin-eosin (H&E)-stained specimens were analyzed using diffractive microscopy. Data regarding the distribution pattern and strength of refractility was recorded. RESULTS: DFSP was more frequently found to be focally, weakly, or non-refractile (82.9%; n = 68) under diffractive microscopy, while DF more often showed diffusely bright refractility (52.9%; n = 128). DFSP samples with diffuse refractility in portions of the lesion (17.1%; n = 14) also exhibited a unique checkerboard pattern distinct from that which was seen in DF samples. CONCLUSIONS: The absence of diffuse refractility was more closely associated with DFSP, as was the presence of a unique checkerboard diffraction pattern. Despite high sensitivity (Sn = 82.9%), absent refractility was not a specific test (Sp = 52.9%), with 47.1% (n = 114) of DF samples sharing this feature. The distinction between DF and DFSP is often diagnosed using H&E alone. In difficult cases, examination of collagen under diffractive microscopy may be useful in distinguishing DFSP from DF and provide an alternative cost-effective tool to immunohistochemical staining.


Assuntos
Dermatofibrossarcoma , Histiocitoma Fibroso Benigno , Neoplasias Cutâneas , Humanos , Dermatofibrossarcoma/diagnóstico , Dermatofibrossarcoma/patologia , Histiocitoma Fibroso Benigno/diagnóstico , Histiocitoma Fibroso Benigno/patologia , Microscopia , Diagnóstico Diferencial , Colágeno , Neoplasias Cutâneas/diagnóstico , Neoplasias Cutâneas/patologia
5.
Arch Dermatol Res ; 316(1): 43, 2023 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-38091095

RESUMO

Surgical site infections (SSIs) contribute to morbidity and are costly to the healthcare system. To identify factors associated with SSIs. Case-control study analyzing the Nationwide Readmission Database (NRD). We identified 45,445 SSIs. Infection rates were higher in those who were obese (BMI ≥ 30) (OR: 1.39, 95% CI 1.28-1.51), tobacco users (OR: 1.08, 95% CI 1.02-1.15), diagnosed with diabetes (OR: 1.16, 95% CI 1.10-1.22), with Elixhauser Comorbidity Index ≥ 2 (OR: 1.14, 95% CI 1.09-1.20), admitted to hospital for 4-6 days (OR: 1.35, 95% CI 1.29-1.42), in medium-size hospital (OR: 1.15, 95% CI 1.05-1.26), or large-size hospital (OR: 1.43, 95% CI 1.31-1.56). In contrast, patients who were 60-79 years old (OR: 0.78, 95% CI 0.73-0.84), 80 years or older (OR: 0.66, 95% CI 0.59-0.73), female (OR: 0.95, 95% CI 0.91-0.99), underweight (BMI < 18.5) (OR: 0.14, 95% CI 0.03-0.59), in a non-metropolitan hospital (OR: 0.83, 95% CI 0.75-0.91), self-pay (OR: 0.82, 95% CI 0.74-0.91), or covered by Medicare (OR: 0.86, 95% CI 0.80-0.91) had lower odds. Initial data entry to NRD is susceptible to human error. Patients who are obese, use tobacco, have multiple comorbidities, and have long hospital stays in medium-to-large-size hospitals are at risk of SSIs. Conversely, odds of SSIs are lower in females, age ≥ 60, BMI < 18.5, self-pay or Medicare (versus private insurance), or at smaller hospitals. Understanding factors associated with SSIs may help surgeons anticipate complications.


Assuntos
Medicare , Infecção da Ferida Cirúrgica , Humanos , Feminino , Idoso , Estados Unidos/epidemiologia , Pessoa de Meia-Idade , Infecção da Ferida Cirúrgica/epidemiologia , Infecção da Ferida Cirúrgica/etiologia , Estudos de Casos e Controles , Fatores de Risco , Obesidade/epidemiologia , Hospitais , Estudos Retrospectivos
6.
STAR Protoc ; 4(4): 102606, 2023 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-37924520

RESUMO

Renewable energy-driven bipolar membrane water electrolyzers (BPMWEs) are a promising technology for sustainable production of hydrogen from seawater and other impure water sources. Here, we present a protocol for assembling BPMWEs and operating them in a range of water feedstocks, including ultra-pure deionized water and seawater. We describe steps for membrane electrode assembly preparation, electrolyzer assembly, and electrochemical evaluation. For complete details on the use and execution of this protocol, please refer to Marin et al. (2023).1.


Assuntos
Água , Membranas
7.
J Cutan Pathol ; 50(12): 1070-1077, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37730204

RESUMO

BACKGROUND: Cytologic atypia encompasses several features of abnormal cellular morphology. We sought to quantify these features in benign and premalignant/malignant squamous cell lesions to better characterize criteria for malignancy. METHODS: We conducted a rater-blinded observational study in which histopathology slides were evaluated under light microscopy, and the presence and relative quantity of 24 distinct cytological features were recorded, along with respective diagnoses. Each slide was evaluated, and the ratings were recorded and analyzed. RESULTS: The most helpful findings, whose presence in high numbers indicates an increased likelihood that the tissue sample is premalignant/malignant, were: (1) pleomorphic parakeratosis; (2) pleomorphic nuclei in the epithelium; (3) irregular nuclei; (4) thick refractile nuclear envelope; (5) presence of nuclear hyperchromasia (dark gray); (6) peripheral nucleoli; and (7) nucleolar stems. Higher values of round or oval nuclear shape and vesicular nuclei increase the likelihood that the tissue sample is benign. CONCLUSIONS: Certain nuclear features have a higher association with premalignancy/malignancy and may guide histologic evaluation of a given lesion. These findings can be used in combination with architectural features and clinical history to add to a complete diagnostic picture.


Assuntos
Carcinoma de Células Escamosas , Paraceratose , Lesões Pré-Cancerosas , Humanos , Núcleo Celular/patologia , Lesões Pré-Cancerosas/patologia , Paraceratose/patologia , Carcinoma de Células Escamosas/patologia
8.
Am J Dermatopathol ; 45(9): 631-634, 2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37625803

RESUMO

ABSTRACT: The locally invasive soft-tissue sarcoma, dermatofibrosarcoma protuberans (DFSPs), shares certain histologic features of the much more common and benign dermatofibroma (DF). While immunohistochemical stains, specifically cluster of differentiation 34 and Factor XIIIa, can be used to distinguish the 2 entities using microscopy, these markers are not entirely sensitive nor specific. Three-dimensionally, DFSP nuclei resemble a "puck" or "coin"-like shape. As hematoxylin/eosin-stained slides are prepared, these "puck" nuclei are fixed in an infinite number of orientations depending on their current position in rotation about their axes within the tumor cells. Under histological examination, this random nuclear positioning produces the appearance of 2 predominate morphologies: an ovoid "disk" shape (en face) and a narrow spindled shape (side view), which distribute in a roughly 50:50 ratio throughout the tumor sample slide. Nuclear morphology was analyzed in 324 DFSP and DF samples at high magnification (×400) to determine the presence or absence of a predominant morphology in which nuclei appear to alternate between an ovoid (en face) and spindled (side view) throughout most of the tumor sample. An alternating ovoid-spindled nuclear morphology was the predominant cytology in 98% of DFSP and was not predominant in 100% of DF samples (P < 0.001). This morphology was found to be highly specific (Sp = 1) and sensitive (Sn = 0.98) for DFSP. This unique nuclear morphology may be a more sensitive and specific diagnostic tool in identifying DFSP from DF in comparison with costly immunohistochemical stains.


Assuntos
Dermatofibrossarcoma , Histiocitoma Fibroso Benigno , Neoplasias Cutâneas , Humanos , Dermatofibrossarcoma/diagnóstico , Histiocitoma Fibroso Benigno/diagnóstico , Núcleo Celular , Amarelo de Eosina-(YS) , Hematoxilina
9.
bioRxiv ; 2023 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-37577718

RESUMO

While immunotherapy shows great promise in patients with triple negative breast cancer, many will not respond to treatment, and predicting response is made difficult by significant tumor heterogeneity. Non-invasive imaging of the tumor vasculature enables the monitoring of treatment and has potential to aid in predicting therapeutic response. Here, we use ultrafast power doppler ultrasound (US) to track longitudinal changes in the vascular response to radiotherapy in two breast cancer models to correlate vascular and immune changes in the tumor microenvironment. Tumor volume and vascular index were calculated to evaluate the effects of radiation using US imaging. US tumor measurements and the quantified vascular response to radiation were confirmed with caliper measurements and immunohistochemistry observations, respectively, demonstrating a proof-of-principle method for non-invasive vascular monitoring. Additionally, we found significant infiltration of CD8+ T cells into irradiated tumors 10 days after radiation, which followed a sustained decline in vascular index that was first observed 1 day post-radiation. Taken together, our findings reveal the potential for ultrafast power doppler US to evaluate changes in tumor vasculature that may be indicative of the tumor-immune microenvironment and ultimately improve patient outcomes by predicting response to immunotherapy.

10.
Harmful Algae ; 126: 102440, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37290887

RESUMO

Cyanobacterial harmful algal blooms (cyanoHABs) dominated by Microcystis spp. have significant public health and economic implications in freshwater bodies around the world. These blooms are capable of producing a variety of cyanotoxins, including microcystins, that affect fishing and tourism industries, human and environmental health, and access to drinking water. In this study, we isolated and sequenced the genomes of 21 primarily unialgal Microcystis cultures collected from western Lake Erie between 2017 and 2019. While some cultures isolated in different years have a high degree of genetic similarity (genomic Average Nucleotide Identity >99%), genomic data show that these cultures also represent much of the breadth of known Microcystis diversity in natural populations. Only five isolates contained all the genes required for microcystin biosynthesis while two isolates contained a previously described partial mcy operon. Microcystin production within cultures was also assessed using Enzyme-Linked Immunosorbent Assay (ELISA) and supported genomic results with high concentrations (up to 900 µg L⁻¹) in cultures with complete mcy operons and no or low toxin detected otherwise. These xenic cultures also contained a substantial diversity of bacteria associated with Microcystis, which has become increasingly recognized as an essential component of cyanoHAB community dynamics. These results highlight the genomic diversity among Microcystis strains and associated bacteria in Lake Erie, and their potential impacts on bloom development, toxin production, and toxin degradation. This culture collection significantly increases the availability of environmentally relevant Microcystis strains from temperate North America.


Assuntos
Cianobactérias , Microbiota , Microcystis , Humanos , Microcystis/genética , Lagos/microbiologia , Cianobactérias/genética , Variação Genética
13.
J Am Acad Dermatol ; 89(1): 114-118, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-36907555

RESUMO

BACKGROUND: Patients awake during staged cutaneous surgery procedures may experience procedure-related pain. OBJECTIVE: To determine whether the level of pain associated with local anesthetic injections prior to each Mohs stage increases with subsequent Mohs stages. METHODS: Multicenter longitudinal cohort study. Patients rated pain (visual analog scale: 1-10) after anesthetic injection preceding each Mohs stage. RESULTS: Two hundred fifty-nine adult patients presenting for Mohs who required multiple Mohs stages at 2 academic medical centers were enrolled; 330 stages were excluded due to complete anesthesia from prior stages, and 511 stages were analyzed. Mean visual analog scale pain ratings were nominally but not significantly different for subsequent stages of Mohs surgery (stage 1: 2.5; stage 2: 2.5; stage 3: 2.7: stage 4:2.8: stage 5: 3.2; P = .770). Between 37% and 44% experienced moderate pain, and 9.5% and 12.5% severe pain, during first as versus subsequent stages (P > .05) LIMITATIONS: Both academic centers were in urban areas. Pain rating is inherently subjective. CONCLUSIONS: Patients did not report significantly increased anesthetic injection pain level during subsequent stages of Mohs.


Assuntos
Anestésicos Locais , Lidocaína , Adulto , Humanos , Anestésicos Locais/efeitos adversos , Lidocaína/efeitos adversos , Cirurgia de Mohs/efeitos adversos , Cirurgia de Mohs/métodos , Estudos Prospectivos , Estudos Longitudinais , Dor/etiologia
14.
Trials ; 24(1): 202, 2023 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-36934272

RESUMO

BACKGROUND: The need for coronavirus 2019 (COVID-19) vaccination in different age groups and populations is a subject of great uncertainty and an ongoing global debate. Critical knowledge gaps regarding COVID-19 vaccination include the duration of protection offered by different priming and booster vaccination regimens in different populations, including homologous or heterologous schedules; how vaccination impacts key elements of the immune system; how this is modified by prior or subsequent exposure to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and future variants; and how immune responses correlate with protection against infection and disease, including antibodies and effector and T cell central memory. METHODS: The Platform Trial In COVID-19 priming and BOOsting (PICOBOO) is a multi-site, multi-arm, Bayesian, adaptive, randomised controlled platform trial. PICOBOO will expeditiously generate and translate high-quality evidence of the immunogenicity, reactogenicity and cross-protection of different COVID-19 priming and booster vaccination strategies against SARS-CoV-2 and its variants/subvariants, specific to the Australian context. While the platform is designed to be vaccine agnostic, participants will be randomised to one of three vaccines at trial commencement, including Pfizer's Comirnaty, Moderna's Spikevax or Novavax's Nuvaxovid COVID-19 vaccine. The protocol structure specifying PICOBOO is modular and hierarchical. Here, we describe the Core Protocol, which outlines the trial processes applicable to all study participants included in the platform trial. DISCUSSION: PICOBOO is the first adaptive platform trial evaluating different COVID-19 priming and booster vaccination strategies in Australia, and one of the few established internationally, that is designed to generate high-quality evidence to inform immunisation practice and policy. The modular, hierarchical protocol structure is intended to standardise outcomes, endpoints, data collection and other study processes for nested substudies included in the trial platform and to minimise duplication. It is anticipated that this flexible trial structure will enable investigators to respond with agility to new research questions as they arise, such as the utility of new vaccines (such as bivalent, or SARS-CoV-2 variant-specific vaccines) as they become available for use. TRIAL REGISTRATION: Australian and New Zealand Clinical Trials Registry ACTRN12622000238774. Registered on 10 February 2022.


Assuntos
COVID-19 , Vacinas , Humanos , SARS-CoV-2 , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Teorema de Bayes , Austrália , Vacinação , Ensaios Clínicos Controlados Aleatórios como Assunto
15.
Glob Chang Biol ; 29(11): 3039-3053, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36843502

RESUMO

Northern lakes disproportionately influence the global carbon cycle, and may do so more in the future depending on how their microbial communities respond to climate warming. Microbial communities can change because of the direct effects of climate warming on their metabolism and the indirect effects of climate warming on groundwater connectivity from thawing of surrounding permafrost, especially at lower landscape positions. Here we used shotgun metagenomics to compare the taxonomic and functional gene composition of sediment microbes in 19 peatland lakes across a 1600-km permafrost transect in boreal western Canada. We found microbes responded differently to the loss of regional permafrost cover than to increases in local groundwater connectivity. These results suggest that both the direct and indirect effects of climate warming, which were respectively associated with loss of permafrost and subsequent changes in groundwater connectivity interact to change microbial composition and function. Archaeal methanogens and genes involved in all major methanogenesis pathways were more abundant in warmer regions with less permafrost, but higher groundwater connectivity partly offset these effects. Bacterial community composition and methanotrophy genes did not vary with regional permafrost cover, and the latter changed similarly to methanogenesis with groundwater connectivity. Finally, we found an increase in sugar utilization genes in regions with less permafrost, which may further fuel methanogenesis. These results provide the microbial mechanism for observed increases in methane emissions associated with loss of permafrost cover in this region and suggest that future emissions will primarily be controlled by archaeal methanogens over methanotrophic bacteria as northern lakes warm. Our study more generally suggests that future predictions of aquatic carbon cycling will be improved by considering how climate warming exerts both direct effects associated with regional-scale permafrost thaw and indirect effects associated with local hydrology.


Assuntos
Lagos , Pergelissolo , Clima , Pergelissolo/microbiologia , Ciclo do Carbono , Archaea/metabolismo , Carbono/metabolismo
16.
Arch Dermatol Res ; 315(7): 1887-1896, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36781457

RESUMO

Exaggerated healing and remodeling after skin injury may cause hypertrophic and keloidal scars, which are associated with functional and quality of life impairment. There is limited guidance available regarding the relative effectiveness of therapies for hypertrophic scars and keloids. In this review, we aim to compare the effectiveness of treatments for hypertrophic scars and keloids. MEDLINE, Embase, Scopus, and the Cochrane Collaboration database were searched from inception to March 2019 for randomized control trials of treatments for hypertrophic and keloid scars that included 20 or more patients. Outcomes evaluated included the standardized mean reduction in scarring and adverse events. The type of scar and the demographic features were analyzed for their effect on clinical outcome. Based on 25 included clinical trials, intralesional injection (64.1% [95% CI 60.8-67.5%]) may be more effective than physical (29.9% [95% CI 28.9-30.9%]) or topical treatments (34% [95% CI 31.8-36.8%]). Combination of 5-fluorouracil and triamcinolone (9:1 dilution) appeared superior among intralesional treatments for keloids. Ablative laser and pulsed-dye laser were the most useful laser treatments. Regression modeling showed laser treatment response was linked to Fitzpatrick skin type (p = 0.002). Adverse events were uncommon for all treatments and mostly transient. Intralesional treatments for keloid and hypertrophic scars may be the most reliable treatment option to improve pathologic scars, while laser treatment may have specific benefits for Fitzpatrick skin types I-III over types IV-VI. Management of pathological scars is an area of critical need, where appropriate treatment can have a significant impact on quality of life.


Assuntos
Cicatriz Hipertrófica , Queloide , Humanos , Queloide/patologia , Cicatriz Hipertrófica/patologia , Qualidade de Vida , Hipertrofia/complicações , Hipertrofia/tratamento farmacológico , Fluoruracila , Resultado do Tratamento , Injeções Intralesionais
17.
J Am Acad Dermatol ; 88(6): 1317-1325, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36841336

RESUMO

BACKGROUND: There is considerable variation in the literature regarding the dermatopathologic diagnostic features of and reporting guidelines for actinic keratosis (AK) and cutaneous squamous cell carcinoma (cSCC). OBJECTIVE: To develop consensus recommendations regarding diagnostic criteria, nomenclature, and reporting of AK and cSCC. METHODS: Literature review and cross-sectional multiround Delphi process including an international group of expert dermatopathologists followed by a consensus meeting. RESULTS: Consensus was achieved regarding the key dermatopathologic features necessary for diagnosing cSCC, AK, and associated variants; grading of degree of cellular differentiation in cSCC; utility of immunohistochemistry for diagnosis of cSCC; and pathologic features that should be reported for cSCC and AK. LIMITATIONS: Consensus was not achieved on all questions considered. CONCLUSION: Despite the lack of clarity in the literature, there is consensus among expert dermatopathologists regarding diagnostic criteria and appropriate reporting of AK and cSCC. Widespread implementation of these consensus recommendations may improve communication between dermatopathologists and clinicians, facilitating appropriate treatment of AK and cSCC.


Assuntos
Carcinoma de Células Escamosas , Ceratose Actínica , Neoplasias Cutâneas , Humanos , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/patologia , Consenso , Estudos Transversais , Ceratose Actínica/patologia , Neoplasias Cutâneas/diagnóstico , Neoplasias Cutâneas/patologia
18.
J Magn Reson ; 347: 107365, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36634594

RESUMO

Robust annotation of metabolites is a challenging task in metabolomics. Among available applications, 13C NMR experiment INADEQUATE determines direct 13C-13C connectivity unambiguously, offering indispensable information on molecular structure. Despite its great utility, it is not always practical to collect INADEQUATE data on every sample in a large metabolomics study because of its relatively long experiment time. Here, we propose an alternative approach that maintains the quality of information but saves experiment time. In this approach, individual samples in a study are first screened by 13C homonuclear J-resolved experiment (JRES). Next, JRES data are processed by statistical total correlation spectroscopy (STOCSY) to extract peaks that behave similarly among samples. Finally, INADEQUATE is collected on one internal pooled sample to select STOCSY peaks that originate from the same compound. We tested this concept using the 13C-labeled endometabolome of a model marine diatom strain incubated under various settings, intending to cover a range of metabolites produced under different external conditions. This scheme was able to extract known diatom metabolites proline, 2,3-dihydroxypropane-1-sulfonate (DHPS), ß-1,3-glucan, choline, and glutamate. This pipeline also detected unknown compounds with structural information, which is valuable in metabolomics where a priori knowledge of metabolites is not always available. The ability of this scheme was seen even in sugar regions, which are usually challenging in 1H NMR due to severe peak overlap. JRES and INADEQUATE were highly complementary; INADEQUATE provided directly-bonded 13C networks, whereas JRES linked INADEQUATE networks within the same compound but broken by nitrogen or sulfur atoms, highlighting the advantage of this integrated approach.


Assuntos
Imageamento por Ressonância Magnética , Metabolômica , Espectroscopia de Ressonância Magnética/métodos , Metabolômica/métodos
19.
J Am Acad Dermatol ; 88(3): 617-622, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36410628

RESUMO

BACKGROUND: Laser hair removal is associated with moderate acute pain. OBJECTIVE: To compare effectiveness of ice pack to topical lidocaine-prilocaine for pain reduction during axillary laser hair removal. METHODS: Participants were randomly assigned to receive topical anesthetic to one axilla and ice packs to the other before each of 3, monthly 810 nm diode laser sessions. The primary endpoint was participant-reported pain on the visual analog scale (VAS) immediately following and 5 minutes after laser session. Posttreatment erythema, overall edema, and perifollicular edema were assessed by 2 blinded photoraters. Skin temperatures, patient preferences, and adverse events were recorded. RESULTS: Eighty-eight of 90 (98%) planned laser treatments were delivered and randomized. Participants reported higher VAS scores immediately after laser treatment with lidocaine-prilocaine compared to ice (P = .03). Five minutes after, participants reported higher VAS scores with ice (P = .03). After 53 of the 88 treatments (60.2%), participants reported preferring ice (P = .055). No serious adverse events were reported. LIMITATIONS: All participants were Caucasian or Asian with Fitzpatrick skin type I to III and coarse dark axillary hair, which may limit generalizability. CONCLUSIONS: While pain control with ice and topical anesthesia is associated with time after treatment, the 2 modalities do not differ in terms of degree of pain reduction associated with axillary laser hair removal.


Assuntos
Remoção de Cabelo , Prilocaína , Humanos , Gelo , Remoção de Cabelo/efeitos adversos , Axila , Combinação Lidocaína e Prilocaína , Lidocaína , Anestésicos Locais , Dor/etiologia , Lasers Semicondutores
20.
Arch Dermatol Res ; 315(5): 1405-1408, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36383221

RESUMO

Graduate medical education (GME) in the USA is an increasingly organized and formalized process overseen by regulatory bodies, notably the American Council of Graduate Medical Education (ACGME), and associated specialty-specific Residency Review Committees (RRCs) to ensure that trainees, including residents and fellows, receive comprehensive, high-quality didactic education, clinical training, and research experience. Among the required elements of GME, performance of independent research is emphasized less than clinical and didactic education. In general, there are no ACGME requirements that trainees successfully publish papers in the peer reviewed. Indeed, unlike as is the case with procedure case logs, there are no minimum thresholds for specific numbers of abstracts presented, posters accepted, or manuscripts published. As such, while residencies and fellowships in certain disciplines or institutions may require considerable, documented research activity, others may not. Since future attending physicians are expected to be experts in their fields, able to digest relevant medical knowledge, critically evaluate emerging findings in the literature, and lead multi-professional healthcare teams, they must have a level of facility with the medical literature than can only be acquired by having performed research and having published papers themselves. Publishing one paper during training is easily attainable for all trainees. Having this be an ACGME requirement will necessitate protected time, research methods education, and mentorship for trainees. This can be accomplished without disrupting the other elements of resident and fellow training. From an ACGME perspective, required scholarly activity will support the competencies of practice-based learning and improvement as well as professionalism. In lay terms, benefits will be a higher level of education and attainment for trainees, and a potentially higher standard of health care for our patients.


Assuntos
Internato e Residência , Humanos , Estados Unidos , Bolsas de Estudo , Educação de Pós-Graduação em Medicina/métodos , Editoração
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