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1.
Chemistry ; : e202403276, 2024 Sep 23.
Article in English | MEDLINE | ID: mdl-39312443

ABSTRACT

One of the most recent focuses in supramolecular chemistry is developing molecules designed to exhibit programmable properties at the molecular level. Rotaxanes, which function as molecular machines with movements controlled by external stimuli, are prime candidates for this purpose. However, the controlled synthesis of rotaxanes, especially amide-benzylic rotaxanes with more than two components, remains an area ripe for exploration. In this study, we aim to elucidate the formation of amide-benzylic [3]rotaxanes using a thread that includes a conventional succinamide station and an innovative triazole-carbonyl station. Including the triazole-carbonyl station introduces new perspectives into the chemistry of rotaxanes, influencing their conformation and dynamics. The synthesis of two-station rotaxanes with varying stoppers demonstrated that the macrocycle consistently occupies the succinamide station, providing greater stability as evidenced by NMR and SC-XRD analyses. The presence of a triazole-carbonyl station facilitated the formation of a second macrocycle exclusively when a secondary amide was employed as the stopper group, presumably due to decreased steric hindrance. Moreover, the second macrocycle directly forms at the triazole-carbonyl station. This investigation reveals that slight modifications in the thread structure can dramatically impact the formation, stability, and interactions between components of rotaxanes.

2.
Biomimetics (Basel) ; 9(2)2024 Feb 05.
Article in English | MEDLINE | ID: mdl-38392139

ABSTRACT

Composites of poly(vinyl alcohol) (PVA) in the shape of braids, in combination with crystals of hydroxyapatite (HAp), were analyzed to perceive the influence of this bioceramic on both the quasi-static and viscoelastic behavior under tensile loading. Analyses involving energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) allowed us to conclude that the production of a homogeneous layer of HAp on the braiding surface and the calcium/phosphate atomic ratio were comparable to those of natural bone. The maximum degradation temperature established by thermogravimetric analysis (TGA) showed a modest decrease with the addition of HAp. By adding HAp to PVA braids, an increase in the glass transition temperature (Tg) is noticed, as demonstrated by dynamic mechanical analysis (DMA) and differential thermal analysis (DTA). The PVA/HAp composite braids' peaks were validated by Fourier transform infrared (FTIR) spectroscopy to be in good agreement with common PVA and HAp patterns. PVA/HAp braids, a solution often used in the textile industry, showed superior overall mechanical characteristics in monotonic tensile tests. Creep and relaxation testing showed that adding HAp to the eight and six-braided yarn architectures was beneficial. By exhibiting good mechanical performance and most likely increased biological qualities that accompany conventional care for bone applications in the fracture healing field, particularly multifragmentary ones, these arrangements can be applied as a fibrous fixation system.

3.
J. Health Biol. Sci. (Online) ; 12(1): 1-8, jan.-dez. 2024. ilus
Article in Portuguese | LILACS | ID: biblio-1567909

ABSTRACT

Objetivo: cconstruir um panorama diagnóstico da violência sexual infantojuvenil assistida no sistema de saúde no Brasil. Métodos: estudo transversal, analítico, realizado com dados do Ministério da Saúde a respeito da violência sexual infantojuvenil no Brasil, no período de 2010 a 2021. Foram conduzidas análises de estatística descritiva e multivariadas, por meio das técnicas de Análise de Correspondências Múltiplas e de Clusterização Hierárquica. Resultados: observou-se grande importância associada à presença de vítimas do sexo feminino, solteiras, adolescentes, que têm práticas sexuais apenas com homens, em ambiente residencial, na ausência de ex-cônjuge, patrão, madrasta ou cuidador no momento da ocorrência. Notou-se também, importância associada aos casos de recorrências, à coocorrência de violência física e psicológica, bem como relacionada à participação de pais, namorados e conhecidos como violentadores. Além disso, identificou-se que as ocorrências em via pública parecem estar mais associadas a vítimas de baixa escolaridade. Conclusão: a violência sexual infantojuvenil no Brasil se estabelece, portanto, como um importante problema social, cultural, de segurança e saúde pública. Foi possível explorar os principais parâmetros associados às ocorrências no país, permitindo, assim, a possibilidade de sua aplicação em ferramentas e serviços de assistência.


Objective: build a diagnostic overview of child and adolescent sexual violence assisted in the health system in Brazil. Methods: a cross-sectional, analytical study carried out with data from the Ministry of Health regarding child and adolescent sexual violence in Brazil from 2010 to 2021. Descriptive and multivariate statistical analyses were conducted using Multiple Correspondence Analysis and Hierarchical Clustering. Results: there was great importance associated with the presence of female victims, singles, and teenagers who have sexual practices only with men in a residential environment, in the absence of a former spouse, boss, stepmother, or caregiver at the time of the occurrence. It was also noted the importance associated with cases of recurrence, the co-occurrence of physical and psychological violence, as well as related to the participation of parents, boyfriends, and acquaintances as perpetrators. Furthermore, it was identified that incidents on public roads seem to be more associated with victims with low education. Conclusion: child and adolescent sexual violence in Brazil is, therefore, established as an important social, cultural, safety, and public health problem. It was possible to explore the main parameters associated with occurrences in the country, thus allowing the possibility of its application in assistance tools and services.


Subject(s)
Adolescent , Sex Offenses , Child Abuse , Public Health
4.
Nat Protoc ; 19(1): 240-280, 2024 Jan.
Article in English | MEDLINE | ID: mdl-38012396

ABSTRACT

Fluidic channels at atomic scales regulate cellular trafficking and molecular filtration across membranes, and thus play crucial roles in the functioning of living systems. However, constructing synthetic channels experimentally at these scales has been a significant challenge due to the limitations in nanofabrication techniques and the surface roughness of the commonly used materials. Angstrom (Å)-scale slit-like channels overcome such challenges as these are made with precise control over their dimensions and can be used to study the fluidic properties of gases, ions and water at unprecedented scales. Here we provide a detailed fabrication method of the two-dimensional Å-scale channel devices that can be assembled to contain a desired number of channels, a single channel or up to hundreds of channels, made with atomic-scale precision using layered crystals. The procedure includes the fabrication of the substrate, flake, spacer layer, flake transfers, van der Waals assembly and postprocessing. We further explain how to perform molecular transport measurements with the Å-channels to directly probe the intriguing and anomalous phenomena that help shed light on the physics governing ultra-confined transport. The procedure requires a total of 1-2 weeks for the fabrication of the two-dimensional channel device and is suitable for users with prior experience in clean room working environments and nanofabrication.


Subject(s)
Filtration , Research Design , Feces , Water
5.
Front Microbiol ; 14: 1321341, 2023.
Article in English | MEDLINE | ID: mdl-38143870

ABSTRACT

Facultative inheritable endosymbionts are common and diverse in insects and are often found at intermediate frequencies in insect host populations. The literature assessing the relationship between environment and facultative endosymbiont frequency in natural host populations points to temperature as a major component shaping the interaction. However, a synthesis describing its patterns and mechanistic basis is lacking. This mini-review aims to bridge this gap by, following an evolutionary model, hypothesizing that temperature increases endosymbiont frequencies by modulating key phenotypes mediating the interaction. Field studies mainly present positive correlations between temperature and endosymbiont frequency at spatial and seasonal scales; and unexpectedly, temperature is predominantly negatively correlated with the key phenotypes. Higher temperatures generally reduce the efficiency of maternal transmission, reproductive parasitism, endosymbiont influence on host fitness and the ability to protect against natural enemies. From the endosymbiont perspective alone, higher temperatures reduce titer and both high and low temperatures modulate their ability to promote host physiological acclimation and behavior. It is necessary to promote research programs that integrate field and laboratory approaches to pinpoint which processes are responsible for the temperature correlated patterns of endosymbiont prevalence in natural populations.

6.
Life (Basel) ; 13(10)2023 Oct 23.
Article in English | MEDLINE | ID: mdl-37895483

ABSTRACT

BACKGROUND: Multiple primary melanoma (MPM) is a diagnostic challenge even with ancillary imaging technologies available to dermatologists. In selected patients' phenotypes, the use of imaging approaches can help better understand lesion characteristics, and aid in early diagnosis and management. METHODS: Under a 5-year prospective single-center follow-up, 58 s primary melanomas (SPMs) were diagnosed in two first-degree relatives, with fair skin color, red hair, green eyes, and personal history of one previous melanoma each. Patients' behavior and descriptive demographic data were collected from medical records. The information on the first two primary melanomas (PMs) were retrieved from pathology reports. The characteristics of 60 melanomas were collected from medical records, video dermoscopy software, and pathology reports. Reflectance confocal microscopy (RCM) was performed prior to excision of 22 randomly selected melanomas. RESULTS: From February 2018 to May 2023, two patients underwent a pooled total of 214 excisional biopsies of suspect lesions, resulting in a combined benign versus malignant treatment ratio (NNT) of 2.0:1.0. The number of moles excised for each melanoma diagnosed (NNE) was 1.7:1.0 and 6.9:1.0 for the female and male patient respectively. The in-situ melanoma/invasive melanoma ratio (IIR) demonstrated a higher proportion of in-situ melanomas for both patients. From June 2018 to May 2023, a total of 58 SPMs were detected by the combination of total body skin exam (TBSE), total body skin photography (TBSP), digital dermoscopy (DD), and sequential digital dermoscopy imaging (SDDI) via comparative approach. The younger patient had her PM one month prior to the second and third cutaneous melanomas (CMs), characterizing a case of synchronous primary CM. The male older relative had a total of 7 nonsynchronous melanomas. CONCLUSIONS: This CM cohort is composed of 83.3% in-situ melanoma and 16.7% invasive melanoma. Both patients had a higher percentage of SPM with clinical nevus-like morphology (84.5%), global dermoscopic pattern of asymmetric multiple component (60.3%) and located on the lower limbs (46.6%). When RCM was performed prior to excision, 81% of SPM had features suggestive of malignancy. As well, invasive melanomas were more frequent in the lower limbs (40%). In the multivariate model, for the two high-risk patients studied, the chance of a not associated with nevus ("de novo") invasive SPM diagnosis is 25 times greater than the chance of a diagnosis of a nevus-associated invasive SPM.

7.
Bioorg Chem ; 139: 106704, 2023 10.
Article in English | MEDLINE | ID: mdl-37453239

ABSTRACT

An efficient [4 + 2] cyclization protocol to synthesize a series of twelve examples of 1,2,3-triazolo[4,5-b]aminoquinolines (5) as novel structurally modified tacrines was obtained by reacting readily accessible precursors (i.e., 3-alky(aryl)-5-amino-1,2,3-triazole-4-carbonitriles (3)) and selected cycloalkanones (4) of five-, six-, and seven-membered rings. We evaluated the AChE and BChE inhibitory activity of the novel modified tacrines 5, and the compound derivatives from cyclohexanone (4b) showed the best AChE and BChE inhibitory activities. Specifically, 1,2,3-triazolo[4,5-b]aminoquinolines 5bb obtained from 3-methyl-carbonitrile (3b) showed the highest AChE (IC50 = 12.01 µM), while 5ib from 3-sulfonamido-carbonitrile (3i) was the most significant inhibitor for BChE (IC50 = 1.78 µM). In general, the inhibitory potency of compound 5 was weaker than the pure tacrine reference, and our findings may help to design and develop novel anticholinesterase drugs based on modified tacrines.


Subject(s)
Acetylcholinesterase , Butyrylcholinesterase , Acetylcholinesterase/metabolism , Butyrylcholinesterase/metabolism , Tacrine/pharmacology , Molecular Docking Simulation , Structure-Activity Relationship , Cholinesterase Inhibitors/chemistry , Molecular Structure
8.
Dent Mater ; 39(9): 763-769, 2023 09.
Article in English | MEDLINE | ID: mdl-37400298

ABSTRACT

OBJECTIVES: to characterize the effects of graphene oxide (GO) on polymethyl methacrylate's (PMMA) reliability and lifetime. The hypothesis tested was that GO would increase both Weibull parameters and decreased strength degradation over time. METHODS: PMMA disks containing GO (0.01, 0.05, 0.1, or 0.5 wt%) were subjected to a biaxial flexural test to determine the Weibull parameters (m: modulus of Weibull; σ0: characteristic strength; n = 30 at 1 MPa/s) and slow crack growth (SCG) parameters (n: subcritical crack growth susceptibility coefficient, σf0: scaling parameter; n = 10 at 10-2, 10-1, 101, 100 and 102 MPa/s). Strength-probability-time (SPT) diagrams were plotted by merging SCG and Weibull parameters. RESULTS: There was no significant difference in the m value of all materials. However, 0.5 GO presented the lowest σ0, whereas all other groups were similar. The lowest n value obtained for all GO-modified PMMA groups (27.4 for 0.05 GO) was higher than the Control (15.6). The strength degradation predicted after 15 years for Control was 12%, followed by 0.01 GO (7%), 0.05 GO (9%), 0.1 GO (5%), and 0.5 GO (1%). SIGNIFICANCE: The hypothesis was partially accepted as GO increased PMMA's fatigue resistance and lifetime but did not significantly improve its Weibull parameters. GO added to PMMA did not significantly affect the initial strength and reliability but significantly increased PMMA's predicted lifetime. All the GO-containing groups presented higher resistance to fracture at all times analyzed compared with the Control, with the best overall results observed for 0.1 GO.


Subject(s)
Graphite , Polymethyl Methacrylate , Materials Testing , Reproducibility of Results , Surface Properties , Ceramics
9.
ACS Omega ; 8(19): 17274-17287, 2023 May 16.
Article in English | MEDLINE | ID: mdl-37214703

ABSTRACT

In this work, we present a regiocontrolled methodology to prepare 1-substituted-3(5)-carboxyalkyl-1H-pyrazoles using trichloromethyl enones as starting materials. It was found that the selectivity of the reaction depends on the nature of the hydrazine: when using arylhydrazine hydrochlorides, synthesis of the 1,3-regioisomer was achieved (22 examples, 37-97% yields), while the corresponding free hydrazine led exclusively to the 1,5-regioisomer (12 examples, 52-83% yields). The trichloromethyl group was used as a precursor for the carboxyalkyl moiety, furnishing a one-pot three-component regioselective protocol suitable for preparing both isomers at moderate to excellent yields. The selectivity of the reaction was investigated through NMR analyses and the structures of the products were unambiguously determined by SCXR analyses.

10.
Sci Rep ; 13(1): 6064, 2023 Apr 13.
Article in English | MEDLINE | ID: mdl-37055491

ABSTRACT

There is a need to classify and standardize graphene-related materials giving the growing use of this materials industrially. One of the most used and more difficult to classify is graphene oxide (GO). Inconsistent definitions of GO, closely relating it to graphene, are found in the literature and industrial brochures. Hence, although they have very different physicochemical properties and industrial applications, commonly used classifications of graphene and GO definitions are not substantial. Consequently, the lack of regulation and standardization create trust issues among sellers and buyers that impede industrial development and progress. With that in mind, this study offers a critical assessment of 34 commercially available GOs, characterized using a systematic and reliable protocol for accessing their quality. We establish correlations between GO physicochemical properties and its applications leading to rationale for its classification.

11.
Nat Nanotechnol ; 18(6): 596-601, 2023 Jun.
Article in English | MEDLINE | ID: mdl-36997753

ABSTRACT

Ion-selective channels play a key role in physiological processes and are used in many technologies. Although biological channels can efficiently separate same-charge ions with similar hydration shells, it remains a challenge to mimic such exquisite selectivity using artificial solid-state channels. Although there are several nanoporous membranes that show high selectivity with respect to certain ions, the underlying mechanisms are based on the hydrated ion size and/or charge. There is a need to rationalize the design of artificial channels to make them capable of selecting between similar-sized same-charge ions, which, in turn, requires an understanding of why and how such selectivity can occur. Here we study ångström-scale artificial channels made by van der Waals assembly, which are comparable in size with typical ions and carry little residual charge on the channel walls. This allows us to exclude the first-order effects of steric- and Coulomb-based exclusion. We show that the studied two-dimensional ångström-scale capillaries can distinguish between same-charge ions with similar hydrated diameters. The selectivity is attributed to different positions occupied by ions within the layered structure of nanoconfined water, which depend on the ion-core size and differ for anions and cations. The revealed mechanism points at the possibilities of ion separation beyond simple steric sieving.


Subject(s)
Capillaries , Ion Channels , Ions , Cations
12.
Sensors (Basel) ; 23(4)2023 Feb 15.
Article in English | MEDLINE | ID: mdl-36850801

ABSTRACT

The ocean has a huge impact on our way of life; therefore, there is a need to monitor and protect its biodiversity [...].


Subject(s)
Biodiversity , Oceans and Seas
13.
Sensors (Basel) ; 23(2)2023 Jan 05.
Article in English | MEDLINE | ID: mdl-36679400

ABSTRACT

Biofouling is the major factor that limits long-term monitoring studies with automated optical instruments. Protection of the sensing areas, surfaces, and structural housing of the sensors must be considered to deliver reliable data without the need for cleaning or maintenance. In this work, we present the design and field validation of different techniques for biofouling protection based on different housing materials, biocides, and transparent coatings. Six optical turbidity probes were built using polylactic acid (PLA), acrylonitrile butadiene styrene (ABS), PLA with copper filament, ABS coated with PDMS, ABS coated with epoxy and ABS assembled with a system for in situ chlorine production. The probes were deployed in the sea for 48 days and their anti-biofouling efficiency was evaluated using the results of the field experiment, visual inspections, and calibration signal loss after the tests. The PLA and ABS were used as samplers without fouling protection. The probe with chlorine production outperformed the other techniques, providing reliable data during the in situ experiment. The copper probe had lower performance but still retarded the biological growth. The techniques based on transparent coatings, epoxy, and PDMS did not prevent biofilm formation and suffered mostly from micro-biofouling.


Subject(s)
Biofouling , Disinfectants , Biofilms , Chlorine , Copper/chemistry , Biofouling/prevention & control , Chlorides
14.
BEPA, Bol. epidemiol. paul. (Impr.) ; 20(220 edição temática CVE): 1-19, 2023.
Article in Portuguese | Sec. Est. Saúde SP, Coleciona SUS, SESSP-CVEPROD, Sec. Est. Saúde SP | ID: biblio-1427667

Subject(s)
Trachoma , Conjunctivitis
15.
Bol. latinoam. Caribe plantas med. aromát ; 21(6): 671-715, nov. 2022. mapas, tab, graf
Article in English | LILACS | ID: biblio-1554672

ABSTRACT

This paper explores the medicinal plants used by Coqueiros Community, Brazil, for the treatment of various ailments. We apply the structured interview and the participant observation, and the local knowledge was analyzed using quantitative measures applied to the general sampling to contribute to selection of promising species for biotechnological development. This community cited 105 species from 53 plant families. The most representative families were Fabaceae, Asteraceae, Anacardiaceae, Myrtaceae, Annonaceae, Apocynaceae, Lamiaceae and Rutaceae. Among the species mentioned in this survey, 66,7% of them occur in the Cerrado as native vegetation. The species considered the most important by interviewees are those with action for the largest number of health problems. Thus, the statistical indexes used here, such as Relative Impotance (RI), Informant Consensus Factor (ICF) and Relative Frequency of Citation (RFC), contributed to identify these species. To conclude, from this research we have known the potential of the Brazilian vegetation for the development of biotechnology.


Este artículo explora las plantas medicinales utilizadas por la comunidad de Coqueiros, Brasil, para el tratamiento de diversas dolencias. Aplicamos la entrevista estructurada y la observación participante, y se analizó el conocimiento local mediante medidas cuantitativas aplicadas al muestreo general para contribuir a la selección de especies promisorias para el desarrollo biotecnológico. Esta comunidad citó 105 especies de 53 familias de plantas. Las familias más representativas fueron Fabaceae, Asteraceae, Anacardiaceae, Myrtaceae, Annonaceae, Apocynaceae, Lamiaceae y Rutaceae. Entre las especies mencionadas en esta encuesta, el 66,7% de ellas se encuentran en el Cerrado como vegetación nativa. Las especies consideradas más importantes por los entrevistados son aquellas con acción para el mayor número de problemas de salud. Así, los índices estadísticos utilizados aquí, como Importancia Relativa (RI), Factor de Consenso del Informante (ICF) y Frecuencia Relativa de Citación (RFC), contribuyeron a identificar estas especies. Para concluir, a partir de esta investigación hemos conocido el potencial de la vegetación brasileña para el desarrollo de la biotecnología.


Subject(s)
Plants, Medicinal , Ethnobotany , Ethnopharmacology , Brazil , Surveys and Questionnaires , Biodiversity , Medicine, Traditional
16.
Article in English, Portuguese | LILACS-Express | LILACS | ID: biblio-1436115

ABSTRACT

Introduction: Body Image can be defined as the mental representation of body identity. The surroundings, the gaze of the other, they emotions, they integrity, and our own fragility are elements of this representation. The social stigma caused by body changes in people living with HIV / AIDS may be more intense than the fear of death itself, being important to assess the impact of these changes in the course of treatment. Objective: To perform the psychometric validation of the Brazilian Portuguese version of the Body Image Scale - HIV for a sample of Brazilians, of both sexes, living with HIV / AIDS. Methods: The total of 450 patients were recruited from the São Bernardo do Campo HIV/AIDS program, aged between 18 and 78 years. Confirmatory factor analysis using the Unweighted Least Square and listwise deletion was used to determine the adherence of the data to the models tested. Results: Adequate coefficients of internal reliability and evidence of construct validity were established for the Brazilian version of BIS-HIV in the unifactorial model. Conclusion:This scale, with evidenced psychometric qualities, provides a useful tool for quantitative investigations of body image in people with HIV/AIDS in the Brazilian context and extends the possibility of future cross-cultural research.


Introdução: a Imagem Corporal pode ser definida como a representação mental da identidade corporal. O meio que cerca o sujeito, o olhar do outro, suas emoções, a integridade e a própria fragilidade do corpo são elementos próprios desta representação. O estigma social provocado pelas alterações corporais nas pessoas que vivem com HIV/AIDS pode ser mais intenso que o próprio medo da morte, sendo importante acompanhar o impacto dessas alterações do decurso do tratamento.Objetivo: realizar a validação psicométrica da versão em português brasileiro da Body Image Scale ­ HIV para uma amostra de brasileiros, de ambos os sexos, vivendo com HIV/AIDS.Método: foram recrutados 450 pacientes de um ambulatório de HIV/AIDS de São Bernardo do Campo, São Paulo, Brasil, com idades entre 18 e 78 anos. A análise fatorial confirmatória, utilizando o Unweighted Least Square e deleção listwise, foi usada para determinar a aderência dos dados aos modelos testados.Resultados: coeficientes adequados de confiabilidade interna e evidência de validade de construto foram estabelecidos para a versão brasileira da BIS-HIV no modelo unifatorial.Conclusão: a escala foi validada e com suas qualidades psicométricas evidenciadas, fornece uma ferramenta útil para investigações quantitativas da imagem corporal em pessoas com HIV/AIDS no contexto brasileiro e amplia a possibilidade de futuras pesquisas transculturais.

17.
Gels ; 8(8)2022 Aug 06.
Article in English | MEDLINE | ID: mdl-36005090

ABSTRACT

Laboratories and industries that handle chemicals are ubiquitously prone to leakages. These may occur in storage rooms, cabinets or even in temporary locations, such as workbenches and shelves. A relevant number of these chemicals are corrosive, thus commercial products already exist to prevent material damage and injuries. One strategy consists of the use of absorbing mats, where few display neutralizing properties, and even less a controlled neutralization. Nevertheless, to the authors' knowledge, the commercially available neutralizing mats are solely dedicated to neutralizing acid or alkali solutions, never both. Therefore, this work describes the development and proof of a completely novel concept, where a dual component active mat (DCAM) is able to perform a controlled simultaneous neutralization of acid and alkali leakages by using microencapsulated active components. Moreover, its active components comprise food-grade ingredients, embedded in nonwoven polypropylene. The acid neutralizing mats contain sodium carbonate (Na2CO3) encapsulated in sodium alginate microcapsules (MC-ASC). Alkali neutralizing mats possess commercial encapsulated citric acid in hydrogenated palm oil (MIRCAP CT 85-H). A DCAM encompasses both MC-ASC and MIRCAP CT 85-H and was able to neutralize solutions up to 10% (v/v) of hydrochloric acid (HCl) and sodium hydroxide (NaOH). The efficacy of the neutralization was assessed by direct titration and using pH strip measurement tests to simulate the leakages. Due to the complexity of neutralization efficacy evaluation based solely on pH value, a thorough conductivity study was performed. DCAM reduced the conductivity of HCl and NaOH (1% and 2% (v/v)) in over 70%. The composites were characterized by scanning electron microscopy (SEM), differential calorimetry (DSC) and thermogravimetric analysis (TGA). The size of MC-ASC microcapsules ranged from 2 µm to 8 µm. Finally, all mat components displayed thermal stability above 150 °C.

18.
An. bras. dermatol ; 97(4): 491-497, July-Aug. 2022. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1383606

ABSTRACT

Abstract The disparity between the number of aesthetic procedures performed worldwide, and the complications described in the literature is remarkable. Doubts regarding the underreporting are reasonable and should be considered. The aim of this study is to demonstrate the scarcity of scientific publications on complications in aesthetic procedures compared to the abundance of these procedures performed worldwide. Based on this knowledge, it will be demonstrated to the health authorities the importance of compulsory notification of complications in aesthetic procedures that require medical attention so that the available data will allow their prevention. The limitation of knowledge regarding complications was demonstrated in the data collection for the preparation of the thesis ‟Deaths Related to Liposuction in Brazil" presented in 2018 and published in Surgical and Cosmetical Dermatology in 2020. The definition of complication in aesthetic procedures needs to be objective to prevent different and subjective interpretations. With the compulsory notification of complications in aesthetic procedures, it is intended to learn about their causes to develop guidelines for their prevention.

19.
Front Psychol ; 13: 856185, 2022.
Article in English | MEDLINE | ID: mdl-35645852

ABSTRACT

The article aims to summarize the literature about the profile of risk of orthorexia in athletes using the ORTO-15 questionnaire. The search was performed at PubMed, Embase, Web of Science, and Sport Discus databases, using the terms "orthorexia" AND "athletes" with the respective entry terms. A multistage process of selection followed the PRISMA 2020 recommendation. A total of 688 articles were identified, and six studies were available for the final process. The prevalence of risk for orthorexia was assessed by the articles by the ORTO-15 questionnaire and ranged between 38 and 35 points. The comparison between male and female athletes and, athletes and non-athletes was not significant in the six articles. In conclusion, the review highlights that athletes from different sports, included in the review, do not present a risk of orthorexia nervosa considering the cutoff of 40 points, but not 35 points. Also, athletes present the same orthorexic behavior compared to non-athletes, demonstrating that orthorexia is an issue that needs to be considered in the general population. Moreover, a special focus should be given on the ORTO-15 questionnaire, about the sensitivity to diagnose the prevalence of orthorexia, especially in athletes.

20.
An Bras Dermatol ; 97(4): 491-497, 2022.
Article in English | MEDLINE | ID: mdl-35654648

ABSTRACT

The disparity between the number of aesthetic procedures performed worldwide, and the complications described in the literature is remarkable. Doubts regarding the underreporting are reasonable and should be considered. The aim of this study is to demonstrate the scarcity of scientific publications on complications in aesthetic procedures compared to the abundance of these procedures performed worldwide. Based on this knowledge, it will be demonstrated to the health authorities the importance of compulsory notification of complications in aesthetic procedures that require medical attention so that the available data will allow their prevention. The limitation of knowledge regarding complications was demonstrated in the data collection for the preparation of the thesis "Deaths Related to Liposuction in Brazil" presented in 2018 and published in Surgical and Cosmetical Dermatology in 2020. The definition of complication in aesthetic procedures needs to be objective to prevent different and subjective interpretations. With the compulsory notification of complications in aesthetic procedures, it is intended to learn about their causes to develop guidelines for their prevention.


Subject(s)
Lipectomy , Surgery, Plastic , Brazil , Esthetics , Humans , Patient Safety , Surgery, Plastic/adverse effects , Surgery, Plastic/methods
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