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2.
Int J Biol Macromol ; 267(Pt 1): 131506, 2024 Apr 10.
Artículo en Inglés | MEDLINE | ID: mdl-38604422

RESUMEN

Marine green algae produce sulfated polysaccharides with diverse structures and a wide range of biological activities. This study aimed to enhance the biotechnological potential of sulfated heterorhamnan (Gb1) from Gayralia brasiliensis by chemically modifying it for improved or new biological functions. Using controlled Smith Degradation (GBS) and O-alkylation with 3-chloropropylamine, we synthesized partially water-soluble amine derivatives. GBS modification increase sulfate groups (29.3 to 37.5 %) and α-l-rhamnose units (69.9 to 81.2 mol%), reducing xylose and glucose, compared to Gb1. The backbone featured predominantly 3- and 2-linked α-l-rhamnosyl and 2,3- linked α-l-rhamnosyl units as branching points. Infrared and NMR analyses confirmed the substitution of hydroxyl groups with aminoalkyl groups. The modified compounds, GBS-AHCs and GBS-AHK, exhibited altered anticoagulant properties. GBS-AHCs showed reduced effectiveness in the APTT assay, while GBS-AHK maintained a similar anticoagulant activity level to Gb1 and GBS. Increased nitrogen content and N-alkylation in GBS-AHCs compared to GBS-AHK may explain their structural differences. The chemical modification proposed did not enhance its anticoagulant activity, possibly due to the introduction of amino groups and a positive charge to the polymer. This characteristic presents new opportunities for investigating the potential of these polysaccharides in various biological applications, such as antimicrobial and antitumoral activities.

3.
Aesthet Surg J ; 2024 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-38470860

RESUMEN

BACKGROUND: Polyurethane (PU)-coated breast implants are known for their strong integration into breast tissue and the formation of capsules around them. However, capsular contracture can pose both aesthetic and clinical challenges. OBJECTIVES: To analyze the biological and morphological characteristics of the capsular tissue surrounding PU-coated implants, irrespective of their contracture status, and to assess their potential suitability as a flap in revision breast surgery for capsular contracture. METHODS: A total of 23 tissue samples were harvested from the capsules surrounding PU-coated breast implants in 12 female patients during replacement or revision surgery. We evaluated collagen abundance, cellular and vascular density, inflammation, collagen band types and alignment, synovial metaplasia, capsule thickness, and the expression of inflammatory biomarkers and myofibroblasts using immunohistochemical techniques. Scanning electron microscopy was used to assess implant surface characteristics over time. RESULTS: We found a significant association of capsule contraction with longer implantation durations and greater implant surface roughness (p = 0.018 and p = 0.033, respectively). Synovial metaplasia was significantly more frequent in noncontracted capsules (p = 0.0049). Both capsule types consisted of paucicellular, type I collagen-rich compact fibrous tissue with low vascularization. There was a marked reduction in inflammatory cells within the foreign body granuloma. The expression of inflammatory biomarkers in the capsular tissue was negligible. CONCLUSIONS: Given the reduced levels of inflammatory and vascular components within the dense, fibrous capsular tissue, we consider them to be viable alternatives for use as capsular flaps in revision surgery. This strategy has the potential to mimic the reconstruction achieved with acellular dermal matrix.

4.
Nanomaterials (Basel) ; 14(5)2024 Mar 02.
Artículo en Inglés | MEDLINE | ID: mdl-38470791

RESUMEN

The global increase in multidrug-resistant bacteria poses a challenge to public health and requires the development of new antibacterial materials. In this study, we examined the bactericidal properties of mesoporous silica-coated silver nanoparticles, varying the core sizes (ca. 28 nm and 51 nm). We also investigated gold nanoparticles (ca. 26 nm) coated with mesoporous silica as possible inert metal cores. To investigate the modification of antimicrobial activity after the surface charge change, we used silver nanoparticles with a silver core of 28 nm coated with a mesoporous shell (ca. 16 nm) and functionalized with a terminal amine group. Furthermore, we developed a facile method to create mesoporous silica-coated silver nanoparticles (Ag@mSiO2) doped films using polyurethane (IROGRAN®) as a polymer matrix via solution casting. The antibacterial effects of silver nanoparticles with different core sizes were analyzed against Gram-negative and Gram-positive bacteria relevant to the healthcare and food industry. The results demonstrated that gold nanoparticles were inert, while silver nanoparticles exhibited antibacterial effects against Gram-negative (Escherichia coli and Salmonella enterica subsp. enterica serovar Choleraesuis) and Gram-positive (Bacillus cereus) strains. In particular, the larger Ag@mSiO2 nanoparticles showed a minimum inhibitory concentration (MIC) and a minimum bactericidal concentration (MBC) of 18 µg/mL in the Salmonella strain. Furthermore, upon terminal amine functionalization, reversing the surface charge to positive values, there was a significant increase in the antibacterial activity of the NPs compared to their negative counterparts. Finally, the antimicrobial properties of the nanoparticle-doped polyurethane films revealed a substantial improvement in antibacterial efficacy. This study provides valuable information on the potential of mesoporous silica-coated silver nanoparticles and their applications in fighting multidrug-resistant bacteria, especially in the healthcare and food industries.

5.
Int J Biol Macromol ; 264(Pt 1): 130567, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38453120

RESUMEN

Alginate, a polyuronic biopolymer composed of mannuronic and guluronic acid units, contain hydroxyl and carboxyl groups as targeting modification sites to obtain structures with new and/or improved biological properties. The copper-catalyzed azide-alkyne cycloaddition (CuAAC) is a versatile click reaction for polymer functionalization, but it typically requires a "pre-click" modification to introduce azide or alkyne groups. Here, we described a straightforward chemical path to selectively modify alginate carboxyl groups producing versatile azido derivatives through N-acylation using 3-azydopropylamine. The resulting azide-functionalized polysaccharides underwent click chemistry to yield amino derivatives, confirmed by NMR and FTIR analyses. The 1H NMR spectrum reveals a characteristic triazole group signal at 8.15 ppm. The absence of the azide FTIR band for all amino derivatives, previously observed for the N-acylation products, indicated reaction success. Antibacterial and antioxidant assessments revealed that the initial polysaccharide lacks E. coli inhibition, while the click chemistry-derived amine products exhibit growth inhibition at 5.0 mg/mL. Lower molecular weight derivatives demonstrate superior DPPH scavenging ability, particularly amino-derivatives (24-33 % at 1.2 mg/mL). This innovative chemical pathway offers a promising strategy for developing polysaccharide structures with enhanced properties, demonstrating potential applications in various fields.


Asunto(s)
Alginatos , Azidas , Azidas/química , Escherichia coli , Polímeros/química , Química Clic , Alquinos/química , Cobre/química , Reacción de Cicloadición
6.
Front Psychol ; 15: 1353809, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38529097

RESUMEN

Introduction: Men who assault their partners present deficits in the social skills necessary for adequate interpersonal interaction. Not all of them have the same difficulties, thus they do not constitute a homogeneous group. Various studies have proposed different typologies of abusers based on their sociodemographic characteristics, criminal history, intensity and extent of violent or psychopathological traits. The majority of these investigations have been conducted in community samples, prompting the question of their validity in samples of men convicted of gender violence. The aim of this study was to establish a typology of men convicted in Spain for a gender violences crimes. Methodology: A total of 365 men participated and were subdivided into three classes of abusers based on their childhood, family experiences with violence, criminal history, sexist attitudes and attitudes toward violence, intensity and type of violence, psychopathological state and attachment style. Results: Coinciding with the results found in other research, 30% of the participants were classified as generally violent. They engaged in severe forms of physical, psychological and sexual violence and were more likely to do so than the rest. Additionally, they are more likely to present psychopathological problems and an antisocial character. Twenty-one percent were classified as dysphoric/borderline. They are characterized by minor forms of psychological violence, borderline or depressive symptomatology and an anxious attachment style. The remaining 49% were classified as familial or normalized abusers. This group exhibits moderate attitudes toward violence and sexism, resulting in less psychological and physical aggression. They do not present psychopathological problems and are likely to present a secure attachment style. Discussion: It is argued that determining the psychological characteristics of each type of abuser would contribute to improving and adapting intervention protocols in Spain, leading to a significant improvement in the current issue of abuse.

7.
Mar Drugs ; 22(3)2024 Feb 29.
Artículo en Inglés | MEDLINE | ID: mdl-38535457

RESUMEN

Low levels of docosahexaenoic acid (DHA) in the brain have been related to neurological disorders, like Alzheimer's disease (AD). After ingestion, dietary DHA must cross the blood-brain barrier, where it is absorbed as lysophosphatidylcholine (LPC), due to its role as a preferential DHA carrier in the brain. This work aimed at the production of LPC-DHA extracts to be used in supplementation/food fortification intended neural enrichment in DHA. As it is rich in DHA, especially its phospholipids (PL), Atlantic mackerel (Scomber scombrus, caught in Spring/2022) was used as a raw material. The polar lipids fraction was separated and hydrolysed with Rhizomucor miehei lipase, to enzymatically convert phosphatidylcholine (PC) into LPC. The fish (muscle and by-products) lipids fraction was used for total lipids (TL) content, lipid classes (LC) and fatty acid (FA) profile evaluation, whilst polar lipids extracts were studied for LC production and FA analysis. Muscle TL ranged between 1.45 and 4.64 g/100 g (WW), while by-products accounted for 7.56-8.96 g/100 g, with the highest contents being found in March. However, PL were more abundant in muscle (22.46-32.20% of TL). For polar lipids extracts, PL represented 50.79% of TL, among which PC corresponded to 57.76% and phosphatidylethanolamine to 42.24%. After hydrolysis, nearly half of this PC was converted into LPC. When compared to the initial PC, DHA relative content (33.6% of total FA) was significantly higher after hydrolysis: 55.6% in PC and 73.6% in LPC. Such extract, obtained from this undervalued species, may represent a promising strategy to increase DHA uptake into brain cells while allowing this species to upgrade.


Asunto(s)
Ácidos Docosahexaenoicos , Fosfolípidos , Animales , Encéfalo , Barrera Hematoencefálica , Fosfatidilcolinas , Ácidos Grasos , Lisofosfatidilcolinas
8.
Plants (Basel) ; 13(3)2024 Jan 31.
Artículo en Inglés | MEDLINE | ID: mdl-38337956

RESUMEN

Anacardium occidentale L. stem bark Traditional Herbal Preparations (AoBTHPs) are widely used in traditional medicine to treat inflammatory conditions, such as diabetes. The present study aims to evaluate the anti-inflammatory, antioxidant, and genotoxic potential of red and white Portuguese AoBTHPs. Using a carrageenan-induced rat paw edema model, a significant anti-edema effect was observed for all tested doses of white AoBTHP (40.2, 71.5, and 127.0 mg/kg) and the two highest doses of red AoB THP (71.5 and 127.0 mg/kg). The anti-edema effect of red AoBTHP's highest dose was much more effective than indomethacin 10 mg/kg, Trolox 30 mg/kg, and Tempol 30 mg/kg. In DPPH, FRAP, and TAC using the phosphomolybdenum method, both types of AoBTHPs showed similar antioxidant activity and no genotoxicity up to 5000 µg/plate in the Ames test. The LC-UV/DAD-ESI/MS fingerprint allowed the identification of gallic and protocatechuic acids as the two main marker compounds and the presence of catechin, epicatechin, epigallocatechin gallate, and ellagic acid in both AoBTHPs. The obtained results support the validation of red and white AoB and their THPs as anti-inflammatory agents and contribute to the possible development of promising new therapeutic options to treat inflammatory conditions.

9.
Artículo en Inglés | MEDLINE | ID: mdl-38325745

RESUMEN

Functional changes in dopamine transporter (DAT) are related to various psychiatric conditions, including bipolar disorder (BD) symptoms. In experimental research, the inhibition of DAT induces behavioral alterations that recapitulate symptoms found in BD patients, including mania and depressive mood. Thus, developing novel animal models that mimic BD-related conditions by pharmacologically modulating the dopaminergic signaling is relevant. The zebrafish (Danio rerio) has been considered a suitable vertebrate system for modeling BD-like responses, due to the well-characterized behavioral responses and evolutionarily conservation of the dopaminergic system of this species. Here, we investigate whether GBR 12909, a selective inhibitor of DAT, causes neurobehavioral alterations in zebrafish similar to those observed in BD patients. Behaviors were recorded after a single intraperitoneal (i.p.) administration of GBR 12909 at different doses (3.75, 7.5, 15 and 30 mg/kg). To observe temporal effects on behavior, swim path parameters were measured immediately after the administration period during 30 min. Locomotion, anxiety-like behavior, social preference, aggression, despair-like behavior, and oxidative stress-related biomarkers in the brain were measured 30 min post administration. GBR 12909 induced prominent effects on locomotor activity and vertical exploration during the 30-min period. Hyperactivity was observed in GBR 30 group after 25 min, while all doses markedly reduced vertical drifts. GBR 12909 elicited hyperlocomotion, anxiety-like behavior, decreased social preference, aggression, and induced depressive-like behavior in a behavioral despair task. Depending on the dose, GBR 12909 also decreased SOD activity and TBARS levels, as well as increased GR activity and NPSH content. Collectively, our novel findings show that a single GBR 12909 administration evokes neurobehavioral changes that recapitulate manic- and depressive-like states observed in rodents, fostering the use of zebrafish models to explore BD-like responses in translational neuroscience research.


Asunto(s)
Manía , Pez Cebra , Animales , Humanos , Conducta Animal , Encéfalo , Proteínas de Transporte de Dopamina a través de la Membrana Plasmática/genética , Estrés Oxidativo , Fenotipo
10.
Front Psychol ; 15: 1265303, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38371700

RESUMEN

Introduction: Adult attachment can be understood as a cognitive and emotional system concerning oneself and others, based on previous attachment experiences throughout life. This system automatically affects relationships with others. Because of its importance in the interpersonal domain, it has been studied on numerous occasions in research on intimate partner violence. The aim of this study was to obtain evidence of validity of the Adult Attachment Questionnaire (AAQ) in a sample of 331 men convicted of intimate partner violence against women (IPVAW). Methods: The AAQ assesses adult attachment style in four dimensions that, together, yield four attachment categories. A psychometric analysis was performed, including reliability analysis and confirmatory factor analysis of the items, which ratified the factorial structure of the questionnaire. For a correct fit of the model, it was necessary to eliminate 4 of the items from the original scale. Results: A latent profile analysis was also carried out, which identified four attachment styles: secure, preoccupied/anxious, avoidant/dismissing and fearful. Reliability indices were adequate. In general, the attachment profiles obtained ranges and means similar to those found in the general population study. The distribution of attachment styles was not equal: 50.57% of the participants presented secure attachment, 4.57% avoidant/dismissing attachment, 36.9% preoccupied/anxious, and 8.57% fearful. Discussion: In conclusion, a valid and reliable instrument was determined based on the original AAQ scale to measure attachment in men convicted of IPVAW.

11.
Int J Food Sci Nutr ; : 1-10, 2024 Feb 19.
Artículo en Inglés | MEDLINE | ID: mdl-38369917

RESUMEN

This study evaluated food consumption according to its degree of processing and its relationship with body adiposity in 218 women with breast cancer. Food consumption was categorised according to the NOVA classification. Two groups were formed, the first composed by consumption of in natura, minimally processed foods and culinary ingredients (less processed foods) and the second one of processed and ultra-processed foods (more processed foods). The increase of 5% in the caloric contribution of more processed foods was associated with a 4% increase in the prevalence of overweight (p = 0.028) and 3% in prevalence of abdominal obesity (p = 0.018). This reinforces the importance of evaluating food consumption with a focus on the degree of processing, as it can contribute to the prevention of excess body fat in this group, as this excess is associated with a worse prognosis and survival.

13.
Harm Reduct J ; 21(1): 25, 2024 Jan 29.
Artículo en Inglés | MEDLINE | ID: mdl-38281942

RESUMEN

BACKGROUND: Due to shared modes of transmission, coinfection with hepatitis B virus (HBV) and hepatitis C virus (HCV) is common, and HBV vaccination is recommended for all persons with HCV who remain susceptible to HBV. To identify potential gaps in HBV vaccination among this high-risk population, we aimed to determine the patterns of HBV susceptibility in persons undergoing community-based HCV treatment. METHODS: We performed a cross-sectional study within two community-based HCV treatment programs in an urban US setting. Participants were identified for HCV screening and confirmatory testing via street-outreach recruitment directed at persons experiencing homelessness and currently using drugs. Participants were excluded if HBsAg was reactive. Cohort characteristics were obtained via intake surveys and descriptive analysis was performed by exposure status. RESULTS: Among 150 participants without chronic HBV receiving community-based HCV treatment, 43% had evidence of prior HBV infection, 26% were immune from vaccination, and 31% were non-immune. Among the subset of the cohort reporting current injection drug use (IDU) (N = 100), 31% (n = 10) of those aged 24-40 and 47% (n = 23) of those aged 41-57 remained susceptible to HBV infection. By contrast only two participants aged 58-74 were HBV non-immune (11%), with 84% immune due to prior exposure. CONCLUSIONS: Our data reflect a high prevalence of HBV susceptibility among persons undergoing community-based HCV treatment. Although younger patients were more likely to be immune due to vaccination, a high proportion remained non-immune to HBV, particularly among those reporting current IDU. Our data reflect a gap in HBV vaccination among younger persons with HCV and suggest a potential role for co-localizing HBV vaccination with community-based HCV screening and treatment.


Asunto(s)
Hepatitis B , Hepatitis C , Humanos , Virus de la Hepatitis B , Hepacivirus , Prevalencia , Estudios Transversales , Hepatitis C/epidemiología , Hepatitis C/prevención & control , Hepatitis B/epidemiología , Hepatitis B/prevención & control
14.
J Adolesc Health ; 74(3): 617-620, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38069932

RESUMEN

PURPOSE: COVID Alert is an exposure notification app deployed in Canada to help limit the spread of COVID-19. METHODS: This was a cross-sectional survey conducted in Québec, Canada. The questionnaire was codesigned with patients and members of the public. It assessed the perspectives of teenagers aged 15-17 years old. RESULTS: Among 237 respondents, 27% had downloaded the COVID Alert app. Friends and relatives constituted the largest influence for app download. The most frequently reported concerns included threats to privacy, confidentiality, cybersecurity, and geolocalization. Among nonusers, having more social contacts and evidence demonstrating effectiveness would have motivated app download. Individual factors associated with download included high concern about the pandemic and high self-perceived app knowledge. DISCUSSION: Future digital health interventions should engage teenagers in developing tools that promote social acceptance and responsible use in this group.


Asunto(s)
COVID-19 , Aplicaciones Móviles , Humanos , Adolescente , Estudios Transversales , Notificación de Enfermedades , Canadá
15.
Viruses ; 15(12)2023 Nov 23.
Artículo en Inglés | MEDLINE | ID: mdl-38140542

RESUMEN

Monkeypox virus (MPXV), belonging to the Poxviridae family and Orthopoxvirus genus, is closely related to the smallpox virus. Initial prodromal symptoms typically include headache, fever, and lymphadenopathy. This review aims to detail various ocular manifestations and immune evasion associated with the monkeypox viral infection and its complications, making it appropriate as a narrative review. Common external ocular manifestations of MPXV typically involve a generalized pustular rash, keratitis, discharges, and dried secretions related to conjunctival pustules, photophobia, and lacrimation. Orthopoxviruses can evade host immune responses by secreting proteins that antagonize the functions of host IFNγ, CC and CXC chemokines, IL-1ß, and the complement system. One of the most important transcription factors downstream of pattern recognition receptors binding is IRF3, which controls the expression of the crucial antiviral molecules IFNα and IFNß. We strongly recommend that ophthalmologists include MPXV as part of their differential diagnosis when they encounter similar cases presenting with ophthalmic manifestations such as conjunctivitis, blepharitis, or corneal lesions. Furthermore, because non-vaccinated individuals are more likely to exhibit these symptoms, it is recommended that healthcare administrators prioritize smallpox vaccination for at-risk groups, including very young children, pregnant women, older adults, and immunocompromised individuals, especially those in close contact with MPXV cases.


Asunto(s)
Enfermedades de la Córnea , Monkeypox virus , Niño , Humanos , Femenino , Embarazo , Preescolar , Anciano , Evasión Inmune , Vacunación , Párpados
16.
Crit Care Sci ; 35(3): 320-327, 2023.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-38133162

RESUMEN

OBJECTIVE: To translate and cross-culturally adapt the Cornell Assessment of Pediatric Delirium anchor points from English to Brazilian Portuguese. METHODS: For the translation and cross-cultural adaptation of the anchor points, all steps recommended internationally were followed after authorization for use by the lead author. The stages were as follows: translation of the original version into Portuguese by two bilingual translators who were native speakers of the target language, synthesis of the versions, reverse translation by two translators who were native speakers of the source language, review and synthesis of the back-translation, review by a committee of experts and preparation of the final version. RESULTS: The translation and cross-cultural adaptation of the anchor points was conducted in accordance with recommendations. The linguistic and semantic issues that arose were discussed by a committee of judges, with 91.8% agreement, as determined using a Likert scale, after changes by consensus. After reanalysis by the authors, there were no changes, resulting in the final version, which was easy to understand and administer. CONCLUSION: The translation and cross-cultural adaptation of the anchor points of the Cornell Assessment of Pediatric Delirium scale into Portuguese spoken in Brazil were successful, maintaining the linguistic and semantic properties of the original instrument. The table of anchor points is easy to understand and will be helpful during the assessment of children younger than 24 months using the Cornell Assessment of Pediatric Delirium scale.


Asunto(s)
Comparación Transcultural , Delirio , Humanos , Niño , Portugal , Encuestas y Cuestionarios , Lenguaje , Brasil
17.
Rev Bras Ortop (Sao Paulo) ; 58(5): e798-e807, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37908532

RESUMEN

Objective To reproduce in an animal model the surgical technique of Masquelet used in the treatment of critical bone defects and to analyze the characteristics of the membrane formed around the bone cement. Methods A 10mm critical defect was created in the femoral shaft of 21 Sprague-Dawley rats. After resection of the central portion of the diaphysis, the defect was stabilized with a Kirschner wire introduced through the medullary canal and with the interposition of a bone cement spacer. After 2, 4, and 6 weeks of the surgical procedure, the animals were euthanized and evaluated on radiographs of the posterior limb regarding the size of the defect, alignment and stability of the osteosynthesis. The membranes formed around the spacer were subjected to histological analysis to assess thickness, connective tissue maturation and vascular density. Results Over time, the membranes initially made up of loose connective tissue were replaced by membranes represented by dense connective tissue, rich in thick collagen fibers. At six weeks, membrane thickness was greater (565 ± 208µm) than at four (186.9 ± 70.21µm, p = 0.0002) and two weeks (252.2 ± 55.1µm, p = 0.001). All membranes from the initial time showed foci of osteogenic differentiation that progressively reduced over time. Conclusion In addition to the structural and protective function of the membrane, its intrinsic biological characteristics can actively contribute to bone regeneration. The biological activity attributed by the presence of foci of osteogenesis confers to the membrane the potential of osteoinduction that favors the local conditions for the integration of the bone graft.

18.
Indian J Microbiol ; 63(4): 588-595, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38031606

RESUMEN

Human papillomavirus (HPV) is a virus with a DNA structure that specifically targets squamous epithelial cells. In individuals with a healthy immune system, HPV infection is typically resolved naturally, leading to spontaneous regression. However, when the viral genetic material integrates into the host DNA, it can disrupt the immune response and eventually give rise to neoplastic manifestations. Remarkably, HPV infection appears to activate a protein called Stimulator of Interferon genes (STING), which contributes to the infiltration of Treg Foxp3 + cells. This cellular response acts as a predisposing factor in patients with HPV, potentially exacerbating the progression of the infection. The STING is versatile in different circumstances and can play a role in the immune response as an anti-tumour therapeutic target in HPV-related carcinogenesis. The function of Th17 cells is ambiguous, depending on the microenvironment in the tumour. In this study, 46 biopsies of the uterine cervix of human immunodeficiency virus (HIV) positive patients were divided into three groups: I-cervicitis (10); II-low-grade intraepithelial neoplasia (26); III-moderate or severe intraepithelial neoplasia (10) and it was performed an immunohistochemical technique with the specific antibodies to HPV, CD123, STING and IL17. Immunostained cells were quantified and statistically analysed. Antigens of HPV were detected in the cervical intraepithelial neoplasia (CIN) groups and were absent in cervicitis group. The expression of CD123 was positive in 10.87% of the casuistic, with no statistical difference among groups. STING was present in the three groups. Group 1 presented an area fraction that varied from 3 to 20%, group 2 presented a variation of 3-23% and group 3 presented an area fraction between 4 and 12%. Cells expressing IL17 were present in three groups, more frequent in cervicitis. Considering that the casuistic is composed of women carrying HIV, this infectious agent could influence the numerical similarities of the cells studied among three groups, even in the absence of HPV.


Stimulator of Interferon genes protein (STING) is versatile in different mechanisms in the immune response and may be a target in HPV-related carcinogenesis. Through immunohistochemistry it was detected IL17 in cervicitis and lesions with HPV. Also, CD123 + plasmacytoid cells seems to play a role both in cervicitis and lesions mediated by HPV.

20.
Pharmaceuticals (Basel) ; 16(10)2023 Sep 28.
Artículo en Inglés | MEDLINE | ID: mdl-37895844

RESUMEN

In Cabo Verde, several endemic species are used in traditional medicine. However, no scientific studies have been conducted on the quality, efficacy, and safety of most of these plants. This study focused on establishing the botanical and chemical identification parameters required for a quality monograph of Campylanthus glaber Benth. aerial parts, a medicinal plant of Cabo Verde traditionally used to treat fever and muscular pain. In addition, in vitro antioxidant and antihyperglycemic activity, cytotoxicity, and genotoxicity were assessed for this medicinal plant. Optical microscopy, LC/UV-DAD-ESI/MS, and colorimetric assays were used for botanical, chemical, and biological studies, respectively. Cytotoxicity was assessed by the MTT assay with HepG2 cells, and genotoxicity by the Ames test. Microscopically, the xeromorphic leaf of C. glaber presents a thick cuticle (13.6-25.5 µm), thick-walled epidermal cells, anomocytic-type stomata, glandular trichomes (stalk length = 49.4-120.8 µm), and idioblasts containing calcium oxalate microcrystals. The chemical screening of aqueous and hydroethanolic extracts of this medicinal plant revealed the presence of organic acids, iridoids, phenylethanoids, and flavonoids as the main classes of marker compounds, with malic acid, citric acid, and verbascoside being the main marker compounds identified. Both extracts showed similar LC/UV-DAD/ESI-MS qualitative profiles and DPPH radical scavenger activity (IC50 = 130.9 ± 1.4; 134.3 ± 3.1 µg/mL). The hydroethanolic extract inhibited both α-amylase and α-glucosidase enzymes in a dose-dependent manner. Both extracts showed no cytotoxicity (up to 1000 µg/mL) by the MTT assay and no genotoxic potential with or without metabolic activation up to 5 mg /plate. The results obtained are an important contribution to the monographic quality assessment of C. glaber aerial parts and suggest that this medicinal plant may be safe and potentially used as an herbal drug raw material for pharmaceutical purposes.

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