Oral Supplementation and Systemic Drugs for Skin Aging: A Narrative Review. / Tratamiento mediante suplementación oral o fármacos sistémicos del envejecimiento cutáneo. Revisión narrativa de la literatura.

Skin aging is influenced by intrinsic and extrinsic factors and involves multiple pathogenic mechanisms. The most widely used treatments are topical products and minimally invasive procedures. Evidence on the benefits of systemic therapy is limited for several reasons: Reliance on mostly small and predominantly female samples, short study durations, methodologic heterogeneity, and a lack of consensus on which outcome measures are clinically relevant. Furthermore, systemic drugs and oral supplements are not without adverse effects. Oral hydrolyzed collagen and oral hyaluronic acid are well tolerated, and numerous clinical trials show they can mitigate some signs of skin aging. Low-dose oral isotretinoin is another option, but it has a higher risk of adverse effects. Evidence is lacking on the effects of the many dietary supplements on offer, such as vitamins, flavonoids, plant extracts, and trace elements. The future of skin aging management would appear to lie in the use of senolytic and senomorphic agents targeting senescent cells in the skin.

Uso de colágeno y terapia de presión negativa en una úlcera de pie diabético: caso de estudio.

Use of collagen and negative pressure wound therapy in a diabetic foot ulcer: a case study SINOPSIS: The following case study describes the use of a collagen layer in combination with negative pressure wound therapy in a diabetic foot ulcer, treated in a hospital in Chile. The wound reduced 58% in size in the first 10 weeks of treatment, reaching complete healing in the following 14 weeks. The treatment carried out avoided amputation of the foot of the patient who, at 64 years of age, maintained his independence and quality of life.

Resumen: El siguiente caso de estudio describe el uso de una capa de colágeno en combinación con terapia de presión negativa en una úlcera de pie diabético, tratada en un hospital de Chile. La herida redujo su tamaño 58% en las primeras 10 semanas, y alcanzó la cicatrización completa en las siguientes 14 semanas. El tratamiento realizado evitó la amputación del pie del paciente que, a sus 64 años, mantuvo su independencia y calidad de vida.

Factibility and security study of the PICS-AF™ plug for the treatment of cryptoglandular anal fistula. / Estudio de factibilidad y seguridad del plug de colágeno (PICS-AF™) en el tratamiento de la fístula anal criptoglandular.

INTRODUCTION: The PICS-AF™ (Curaseal Inc.) device is a new plug made of collagen that has a retention system in the internal orifice. This pilot study was designed to assess both the feasibility and safety of this plug in the treatment of trans-sphincteric anal fístulas. METHODS: A total of 44 patients (34 men), with a mean age of 54.68±7.3, with trans-sphincteric anal fístulas were included in the study; 34 of them were analyzed. All patients were examined according to a strict preoperative protocol and until 6 months after surgery. The feasibility of the procedure and the adverse events were analyzed. RESULTS: Finally, 34 patients were operated on, and in 30 of them the plug was used. Therefore, the feasibility was calculated at 88%. There was a total of 16 adverse events, 4recorded as not related (3 mild and one moderate) and 12 related to the procedure or to the device implanted. Of these, 5were mild, 5moderate and 2severe. The majority of the events reported were related to proctalgia (4 patients) or infection at the implant site (4 patients). CONCLUSIONS: The present study indicates that the new collagen plug can be placed effectively and with an acceptable complication rate.

Usefulness of a Simple Immunohistochemical Staining Technique to Differentiate Anti-p200 Pemphigoid From Other Autoimmune Blistering Diseases: A Report of 2 Cases. / Descripción de 2 casos de penfigoide anti-p200. Utilidad de una técnica inmunohistoquímica sencilla en el diagnóstico diferencial con otras enfermedades ampollosas autoinmunes.

Anti-p200 pemphigoid is a rare autoimmune subepidermal blistering disease characterized by the presence of circulating immunoglobulin G antibodies directed against laminin gamma-1, a 200-kDa protein located in the lamina lucida of the basement membrane. We review the clinical, histopathological and immunological characteristics of the first 2 cases described in Spain. Anti-p200 pemphigoid shares histopathological and immunopathological findings with epidermolysis bullosa acquisita, the main entity in the differential diagnosis. However, its management follows the same guidelines as those used for bullous pemphigoid. The diagnosis is confirmed by immunoblotting, which is a complex technique available in few centers. We propose the immunohistochemical detection of collagen type IV on the floor of the blister, combined with standard immunofluorescence techniques, as a simple, accessible alternative to differentiate anti-p200 pemphigoid from epidermolysis bullosa acquisita.

[Infantile cortical hyperostosis: Case report]. / Hiperostosis cortical infantil: reporte de caso.

Infantile Cortical Hyperostosis, or Caffey-Silverman disease, is a rare condition characterised by generalised bone proliferation mediated by an acute inflammatory process. Diagnosis can be made through clinical evaluation and X-ray studies. The course is generally self-limiting and prognosis is excellent. OBJECTIVE: To present the case of a 4-month child with clinical and radiological symptoms compatible with Infantile Cortical Hyperostosis. CASE REPORT: A 4-month old male who presented with crying and irritability associated with swelling of the face, arms and legs was admitted to the Emergency Room of National Institute of Pediatrics. Bilateral mandibular swelling extending to periauricular region was observed, with no signs of inflammation. X-ray studies showed a periosteal reaction in the jaw, left femur and tibia, and radius bilateral. Clinical observation combined with analgesics and antipyretics was the only medical intervention. Four to six months after discharge from hospital, the symptoms disappeared, confirming the good prognosis of this condition. CONCLUSION: Infantile cortical hyperostosis is a collagenopathy, which must be considered as a differential diagnosis in acute bone inflammatory processes, irritability and fever. It is important to understand and identify this disease and clinical-radiological correlation is remarkable.

Bilateral macular edema in sistemic sclerosis.

Systemic sclerosis is a chronic, autoimmune, multisystem disease characterized by vascular dysfunction, chronic inflammation and widespread fibrosis. Although vascular involvement commonly manifests in the skin, it can also affect other organs, including the eyes. The characteristic vascular alteration is an obliterative fibroproliferative vasculopathy leading to hypoxia and tissue ischemia. We present a case of bilateral macular edema in a patient diagnosed with systemic sclerosis, as a consequence of retinal and choroidal vascular changes.

Modulatory activity of a bovine hydrolyzed collagen-hydroxyapatite food complex on human primary osteoblasts after simulating its gastrointestinal digestion and absorption.

Introduction: Introduction: osteoporosis is the most prevalent bone disease and one of the main causes of chronic disability in middle and advanced ages. Conventional pharmacological treatments are still limited, and their prolonged use can cause adverse effects that motivate poor adherence to treatment. Nutritional strategies are traditionally based on supplementing the diet with calcium and vitamin D. Recent studies confirm that the results of this supplementation are significantly improved if it is accompanied by the intake of oral hydrolyzed collagen. Objective: to evaluate the possible in vitro osteogenic activity of a peptide-mineral complex formed by bovine hydrolyzed collagen and bovine hydroxyapatite (Phoscollagen®, PHC®). Methods: the digestion and absorption of PHC® were simulated using the dynamic gastrointestinal digester of AINIA and Caco-2 cell model, respectively. Primary cultures of human osteoblasts were treated with the resulting fraction of PHC® and changes were evaluated in the proliferation of preosteoblasts and in the mRNA expression of osteogenic biomarkers at different stages of osteoblast maturation: Runt-related transcription factor 2 (Runx2), alkaline phosphatase (ALP), osteocalcin (OC) and type I collagen (ColA1). Results: an increase in preosteoblastic proliferation was observed (p ≤ 0,05). No changes were detected in the biomarkers of osteoblasts with 5 days of differentiation, but were with 14 days, registering an increase in Runx2 (p = 0.0008), ColA1 (p = 0.035), OC (p = 0.027) and ALP (without significance). Conclusion: these results show that the PHC® peptide-mineral complex stimulates the activity of mature osteoblasts, being capable of promoting bone formation.

Introducción: Introducción: la osteoporosis es la enfermedad ósea más prevalente y una de las principales causas de discapacidad crónica en las edades medias y avanzadas. Los tratamientos farmacológicos convencionales aún son limitados y su uso prolongado puede provocar efectos adversos que motiven baja adherencia al tratamiento. Las estrategias nutricionales se basan tradicionalmente en suplementar la dieta con calcio y vitamina D. Estudios recientes confirman que los resultados de esta suplementación mejoran significativamente si se acompaña de la ingesta de colágeno hidrolizado oral. Objetivo: evaluar la posible actividad osteogénica in vitro de un complejo péptido-mineral formado por colágeno hidrolizado e hidroxiapatita bovinos (Phoscollagen®, PHC®). Métodos: se simuló la digestión y absorción de PHC® utilizando el digestor dinámico gastrointestinal de AINIA y el modelo celular Caco-2, respectivamente. Cultivos primarios de osteoblastos humanos se trataron con la fracción resultante de PHC® y se evaluaron los cambios en la proliferación de los preosteoblastos y en la expresión del ARNm de los biomarcadores osteogénicos en diferentes etapas de maduración de los osteoblastos: factor de transcripción 2 relacionado con Runt (Runx2), fosfatasa alcalina (ALP), osteocalcina (OC) y colágeno tipo I (ColA1). Resultados: se observó un incremento de la proliferación preosteoblástica (p ≤ 0,05). No se detectaron cambios en los biomarcadores de osteoblastos con 5 días de diferenciación, pero sí con 14 días, registrándose un aumento de Runx2 (p = 0,0008), ColA1 (p = 0,035), OC (p = 0,027) y ALP (sin significancia). Conclusión: estos resultados muestran que el complejo péptido-mineral PHC® estimula la actividad de los osteoblastos maduros, siendo susceptible de promover la formación ósea.

The role of collagen type I/III ratio in the etiology of sacrococcygeal pilonidal.

OBJECTIVE: The purpose of this study is to investigate whether there was a difference between the midline skin and the healthy skin in the lateral by means of total amount of collagen and Type I/III ratio which was the indicator of the collagen structure. MATERIAL AND METHODS: Fifty patients with pilonidal sinus disease were enrolled. Samples were prepared from the midline skin of the sinus where the holes were located and lateral skin of the resected material. RESULTS: It was determined that the lateral line had significantly more collagen intensity and a higher collagen Type I/III ratio (p < 0.001). CONCLUSIONS: One of the reasons why hair mostly pricks into the midline in the intergluteal sulcus in pilonidal sinus disease is the fact that the amount of total collagen and collagen Type I/III ratio of the midline are lower than those of the lateral tissue. Complications are more common in cases with low Type I/III ratio and low total collagen rates.

OBJETIVO: El propósito de este estudio es investigar si existía diferencia entre la piel de la línea media y la piel sana en el lateral por medio de la cantidad total de colágeno y la relación Tipo I/III que era el indicador de la estructura del colágeno. MATERIAL Y MÉTODOS: Se inscribieron 50 pacientes con enfermedad del seno pilonidal. Se prepararon muestras de la piel de la línea media del seno donde se ubicaron los orificios y de la piel lateral del material resecado. RESULTADOS: Se determinó que la línea lateral tenía significativamente más intensidad de colágeno y una mayor relación de colágeno Tipo I/III (p < 0.001). CONCLUSIONES: Una de las razones por las que el cabello se pincha principalmente en la línea media en el surco interglúteo en la enfermedad del seno pilonidal es el hecho de que la cantidad de colágeno total y la relación de colágeno tipo I/III de la línea media son menores que las del tejido lateral. Las complicaciones son más comunes en los casos con una proporción baja de Tipo I/III y tasas bajas de colágeno total.

[Efficacy of collagen infiltrations in the pelvic pain caused by episiotomy and caesarean scars. Pilot randomized clinical trial]. / Eficacia de las infiltraciones con colágeno en el dolor pélvico causado por cicatrices de episiotomía y cesáreas. Ensayo clínico piloto aleatorizado.

BACKGROUND AND AIMS: Pelvic pain is a frequently consulted symptom in pelvic floor rehabilitation units. The aim of this study was to evaluate the efficacy of collagen infiltrations in pain and the appearance of scars from perineal tears, episiotomies and caesarean sections. MATERIAL AND METHODS: Pilot randomized, controlled and single-blind clinical trial. Control group (CG) patients received conventional rehabilitation treatment. Additionally, those in the intervention group (IG) received 3-5 collagen infiltrations. The patients were evaluated at baseline and 6 weeks post-intervention. The main outcome was pain and it was evaluated with the visual analog scale and McGill Pain Questionnaire. As secondary outcomes, the appearance of the scar was evaluated by Vancouver Scar Scale and the Patient Scar Assessment Scale. A sample of 15 women was analyzed, 8 in the CG and 7 in the IG. RESULTS: The mean age was 33.1 years (SD 4.1). The intragroup analysis showed a significant decrease of the visual analog scale punctuation and total McGill Pain Questionnaire score and the PRI-Emotional dimension of the McGill Pain Questionnaire. In the IG, a significant decrease was also observed in the PRI-Sensorial and PRI-Evaluative dimensions in comparison with baseline situation. In both groups, a significant improvement in the appearance of the scar was observed. In the intergroup analysis, a greater decrease in pain was observed in PRI-Sensorial subscale of the McGill Pain Questionnairein the IG (-15.1 vs. -6; P=.040). CONCLUSIONS: Collagen infiltrations may improve pain and the appearance of painful scars.

Outcomes of trabeculectomy with polyvinylpyrrolidone collagen versus mitomycin in primary open angle glaucoma. 36-month follow-up. / Colágeno polivinilpirrolidona versus mitomicina C en trabeculectomía en pacientes con glaucoma primario de ángulo abierto. Seguimiento a 36 meses.

PURPOSE: Describe and compare the effects of intraoperative application of Polyvinylpyrrolidone Collagen (PVP) versus Mitomycin C (MMC) on the pattern of change in mean IOP reduction and mean number of medications over 36-months follow-up in patients with primary open angle glaucoma (POAG) undergoing trabeculectomy. METHODS: Prospective, randomized, comparative study. Twenty-six eyes of 26 patients with POAG and no previous incisional glaucoma surgery underwent trabeculectomy and were randomized to PVP or MMC and completed a 36-month follow-up. Main outcome measures were IOP and number of glaucoma medications. Multivariate longitudinal analysis was performed by fitting a linear trend model adjusting for baseline response for the IOP outcome and a log-linear regression model with within-subject associations for the number of hypotensive medications outcome. Sensitivity analysis was performed to assess lower and higher order polynomial trends over time in IOP. RESULTS: The univariate analysis revealed that the mean IOP reduction from baseline to 36 months was 7.62mmHg (3.05; 12.18) in the MMC group and 8.15mmHg (-0.64; 16.95) in the PVP group. Mean percentage IOP reduction from baseline was 37.09% (15.93; 58.17) and 36.08% (5.16; 67.20) in the PVP group. Mean change in number of medications from baseline to 36 months was -0.92 medications (-3.38; +1.54) for the MMC group and -1 medication (-3.12; +1.12) for the PVP group. Both groups had a statistically significant decline in mean IOP over the follow-up period (p<0.001) but there was no discernible difference between the two exposure groups in the rate of change in IOP (p=0.5975). Sensitivity analysis showed that a linear trend model is adequate to describe the IOP reduction over the follow-up period. Both groups had a statistically significant change in the number of hypotensive medications used between baseline and month 36 (p<0.05) but there was no discernible difference between exposure groups (p=0.2917). Both the PVP and MMC groups showed an initial reduction in number of medications until month 12 and a relatively linear increase towards month 36. A longer follow-up may be warranted to reveal differences in the number of medications between the two exposure groups. Postoperative complications were less frequent in the PVP group. CONCLUSIONS: The use of PVP during trabeculectomy achieves and maintains a statistically significant IOP reduction from baseline to 36 months and decreases the number of glaucoma medications. Secondary outcome measures showed a lower incidence of adverse events in the PVP group.

The Efficacy and Safety of Different Sericin Doses for Pleurodesis.

BACKGROUND: The aim of present study is to compare the effectiveness, side-effect potential of different doses of sericin pleurodesis. METHODS: Adult, male, 12-week-old, Wistar-albino rats (n=52), were randomly-divided into four-groups, referred to A, B, C and D. Sericin was administrated at different doses through left thoracotomy, with 15mg sericin to Group-A, 30mg to Group-B and 45mg to Group-C. Group-D was assigned as control group. The rats were sacrificed 12 days later. Left-hemithorax, heart, liver and kidney were examined pathologically. RESULTS: No foreign body reaction in the parenchyma was observed in any of the rats, while emphysema was least common in Group-B (P<.05). Multi-layer mesothelium of both pleura was most common in Group-B, while fibrosis and fibrin organization within the visceral-pleura was more successful in all of sericin treated groups than in control group (P<.05), with neither Group-A, Group-B nor Group-C being superior to each other. In the examination of collagen fibers using Masson's trichrome, "dense collagen fibers" were found in all three sericin treated groups, and differences between Groups-A, -B, -C and the control group were significant (P<.05). The probability of observing pyknotic nucleus and balloon degeneration in liver increased with increasing sericin doses (P<.05). Glomerular degeneration in kidney and the findings of pericarditis were most common in Group-C (P<.05). CONCLUSION: The target should be to maximize efficacy while minimizing the likelihood of side-effects. The intrapleural administration of sericin 30mg performs better due to multi-layer mesothelial reaction being higher and emphysema being lower in Group-B, to the fewer side-effects affecting the kidney and heart, and liver toxicity not being higher.

Análisis bibliométrico de la investigación en genética y la ruptura de ligamento cruzado anterior en deporte: una revisión / Bibliometric analysis of research in genetic and anterior cruciate ligament rupture in sport: a review / Análise bibliométrica da pesquisa em genética e ruptura do ligamento cruzado anterior no esporte: uma revisão

Resumen: Introducción: El componente genético se ha establecido como un factor de riesgo considerable para la ruptura del ligamento cruzado anterior (RLCA). La investigación actual se ha centrado en conocer los genes candidatos que pueden influir y predisponer a un sujeto a padecer esta lesión. Objetivo: Se llevó a cabo un análisis bibliométrico para rastrear los resultados de la indagación e identificar las tendencias globales, así como las brechas en el conocimiento sobre la relación entre el componente genético y la RLCA. Metodología: Los datos fueron extraídos de las bases Pubmed y Scopus, igual que analizados en el paquete Bibliometrix del software R. Se identificó un total de 63 estudios publicados a partir del 2007. Resultados: La mayoría de las publicaciones identificadas fueron artículos de investigación (85.71 %). Los autores con mayor número de aquellas se encuentran en Polonia y Sudáfrica. El análisis a través del mapa de coocurrencias reveló que hay una línea principal de investigación basada en el estudio de polimorfismos genéticos, especialmente en los genes de las familias del colágeno (COL1A1, COL5A1, COL12A1, en mayor frecuencia). Un total de 54 genes candidatos fueron identificados en los estudios. Conclusión: Esperamos que este estudio pueda contribuir a encontrar puntos claves y vacíos de investigación, al proporcionar análisis integrales e información estructurada sobre este tema.

Abstract: Introduction: Genetic component has been established as a significant risk factor for anterior cruciate ligament rupture (ACLR). Current research has focused on knowing the candidate genes that can influence and predispose a subject to this injury. Objective: A bibliometric analysis was carried out to trace the results of the research and identify global trends and gaps in knowledge about the relationship between the genetic component and ACLR. Methodology: Data were extracted from the Pubmed and Scopus databases and analyzed in the Bibliometrix package of the R software. A total of 63 studies published since 2007 were identified. Results: Most of the publications recovered were research articles (85.71%). The authors with the highest number of those are in Poland and South Africa. The analysis through the co-occurrence map reveals that there is a mainline of research based on the study of genetic polymorphisms, especially in the genes of the collagen families (COL1A1, COL5A1, COL12A1, in greater frequency). A total of 54 candidate genes were identified within the studies. Conclusion: We hope that this study can help to find key points and research gaps by providing a comprehensive analysis and structured information on this topic.

Resumo: Introdução: O componente genético foi estabelecido como um fator de risco significativo para a ruptura do ligamento cruzado anterior (RLCA). As pesquisas atuais têm se concentrado em identificar os genes candidatos que podem influenciar e predispor um indivíduo a essa lesão. Objetivo: Foi realizada uma análise bibliométrica para rastrear os resultados das pesquisas e identificar tendências globais e lacunas no conhecimento sobre a relação entre o componente genético e a RLCA. Metodologia: Os dados foram extraídos das bases de dados Pubmed e Scopus e analisados no pacote Bibliometrix do software R. Um total de 63 estudos publicados desde 2007 foram identificados. Resultados: A maioria das publicações recuperadas foram artigos de pesquisa (85,71%). Os autores com o maior número dessas publicações estão na Polônia e na África do Sul. A análise por meio do mapa de coocorrência revela que há uma linha principal de pesquisa baseada no estudo de polimorfismos genéticos, especialmente nos genes das famílias de colágeno (COL1A1, COL5A1, COL12A1, com maior frequência). Um total de 54 genes candidatos foram identificados nos estudos. Conclusão: Esperamos que este estudo possa ajudar a encontrar pontos-chave e lacunas de pesquisa, fornecendo uma análise abrangente e informações estruturadas sobre este tema.

Osteogenesis imperfect: clinical and epidemiological findings in a series of pediatric patients.

Background: Osteogenesis imperfecta (OI) is the most common hereditary bone disorder with an incidence of one in 10,000-25,000 births. It is caused mainly by mutations in the genes that code for Type I collagen chains. In most cases, it shows an autosomal dominant inheritance pattern. OI is characterized by an increase in bone fragility that leads to frequent fractures, which cause pain, deformity and disability associated with other alterations. The objective of this study was to present the clinical and epidemiological characteristics of a series of pediatric patients diagnosed with OI evaluated at the University of Los Andes. Methods: A series of 37 pediatric cases with diagnosis of OI according to the clinical and radiological classification of sillence is analyzed, which were evaluated in the medical genetics unit of the University of Los Andes consultation between January 2006 and December 2018. Results: Type I was the most frequent OI type, with 31 patients (83.78%). Additionally, the femur was the most affected bone. Blue scleras were the most frequent additional finding in 32 patients (86.49%). Conclusions: OI represents the main reason for consultation of alterations in the skeletal system in the medical genetics unit of the University of Los Andes. Given the broad clinical presentation, the evaluation must be individual and interdisciplinary. Further study will provide timely family genetic counseling.

Introducción: La osteogénesis imperfecta (OI) es el trastorno óseo hereditario más común, con una incidencia de 1 en 10,000 a 25,000 nacimientos. Este trastorno está causado principalmente por mutaciones de los genes que codifican las cadenas del colágeno tipo I. En la mayoría de los casos, se presenta un patrón de herencia autosómico dominante. La OI se caracteriza principalmente por un aumento en la fragilidad ósea que da lugar a fracturas frecuentes que producen dolor, deformidad y discapacidad asociada con otras alteraciones. El objetivo del estudio fue exponer las características clínicas y epidemiológicas de una serie de pacientes pediátricos con diagnóstico de OI evaluados en la Universidad de Los Andes. Métodos: El presente trabajo consiste en el análisis de una serie de 37 casos pediátricos con diagnóstico de OI, de acuerdo a la clasificación clínica y radiológica de Sillence, evaluados en la consulta de la Unidad de Genética Médica de la Universidad de Los Andes, entre enero de 2006 y diciembre de 2018. Resultados: La OI tipo I fue la de presentación más frecuente, con 31 pacientes (83.78%). El fémur fue el hueso más afectado de manera conjunta. Las escleras azules fueron el hallazgo adicional más frecuente, en 32 pacientes (86.49%). Conclusiones: La OI representa el principal motivo de consulta por alteraciones en el sistema esquelético en la Unidad de Genética Médica de la Universidad de Los Andes. Ante la amplia forma clínica de presentación, la evaluación debe ser individual e interdisciplinaria. A través de un estudio más profundo se podrá brindar el oportuno asesoramiento genético familiar.

Connective tissue disease-associated interstitial lung disease / Doença pulmonar intersticial associada a doença do tecido conjuntivo

ABSTRACT Connective tissue disease-associated interstitial lung disease (CTD-ILD) represents a group of systemic autoimmune disorders characterized by immune-mediated organ dysfunction. Systemic sclerosis, rheumatoid arthritis, idiopathic inflammatory myositis, and Sjögren's syndrome are the most common CTDs that present with pulmonary involvement, as well as with interstitial pneumonia with autoimmune features. The frequency of CTD-ILD varies according to the type of CTD, but the overall incidence is 15%, causing an important impact on morbidity and mortality. The decision of which CTD patient should be investigated for ILD is unclear for many CTDs. Besides that, the clinical spectrum can range from asymptomatic findings on imaging to respiratory failure and death. A significant proportion of patients will present with a more severe and progressive disease, and, for those, immunosuppression with corticosteroids and cytotoxic medications are the mainstay of pharmacological treatment. In this review, we summarized the approach to diagnosis and treatment of CTD-ILD, highlighting recent advances in therapeutics for the various forms of CTD.

RESUMO Doença pulmonar intersticial associada à doença do tecido conjuntivo (DPI-DTC) representa um grupo de distúrbios autoimunes sistêmicos caracterizados por disfunção de órgãos imunomediada. Esclerose sistêmica, artrite reumatoide, miosite inflamatória idiopática e síndrome de Sjögren são as DTC mais comuns que apresentam acometimento pulmonar, bem como pneumonia intersticial com achados autoimunes. A frequência de DPI-DTC varia de acordo com o tipo de DTC, mas a incidência total é de 15%, causando um impacto importante na morbidade e mortalidade. A decisão sobre qual paciente com DTC deve ser investigado para DPI não é clara para muitas DTC. Além disso, o espectro clínico pode variar desde achados assintomáticos em exames de imagem até insuficiência respiratória e morte. Parte significativa dos pacientes apresentará doença mais grave e progressiva, e, para esses pacientes, imunossupressão com corticosteroides e medicamentos citotóxicos são a base do tratamento farmacológico. Nesta revisão, resumimos a abordagem do diagnóstico e tratamento de DPI-DTC, destacando os recentes avanços na terapêutica para as diversas formas de DTC.

Evaluation of unilateral corneal collagen cross-linking on fellow untreated eyes of patients with keratoconus / A avaliação da reticulação unilateral do colágeno corneano em olhos não tratados de pacientes com ceratocone

ABSTRACT Purpose: This study aimed to examine the effects of unilateral corneal collagen cross-linking treatment on visual acuity and the topographic findings of the fellow untreated eye of patients who had bilateral progressive keratoconus. Methods: Patients with progressive keratoconus who underwent cross-linking treatment were screened retrospectively. A total of 188 untreated eyes of 188 patients whose eyes were treated unilaterally with either standard or accelerated cross-linking and refused cross-linking procedure for the fellow eye were included. Visual acuity and topographic findings of the fellow untreated eyes were obtained preoperatively and postoperatively at the 1st, 3rd, 6th, 12th, 24th, 30th, and 36th months. Results: The change over time of variables examined was similar in the untreated eyes of patients who received standard and accelerated cross-linking methods (p>0.05). At the 12th month, 136 (95.8%) untreated eyes were stable according to progression criteria. Only 4 (8%) eyes were progressive at the 24th month. No progression was observed in any of the 16 patients with a 36-month follow up. Conclusions: The results showed that the fellow untreated eyes of patients with bilateral progressive keratoconus did not have significant progression rates after unilateral cross-linking treatment.

RESUMO Objetivo: Examinar os efeitos do tratamento de reticulação unilateral do colágeno corneano na acuidade visual e os achados topográficos em olhos não tratados de pacientes com ceratocone progressivo bilateral. Métodos: Foram rastreados retrospectivamente pacientes com ceratocone progressivo submetidos a tratamento de reticulação. Foram incluídos no estudo 188 olhos não tratados de 188 pacientes tratado unilateralmente com reticulação padrão ou acelerada e que recusaram o procedimento de reticulação no outro olho. A acuidade visual e os achados topográficos dos olhos não tratados foram obtidos no pré- e pós-operatório no 1º, 3º, 6º, 12º, 24º, 30º e 36º mês. Resultados: As alterações ao longo do tempo foram semelhantes para as variáveis examinadas nos olhos não tratados de pacientes tratados com métodos de reticulação padrão e acelerado (p>0,05). No 12º mês, 136 olhos não tratados (95,8%) estavam estáveis, de acordo com os critérios de progressão. Apenas quatro olhos (8%) mostraram progressão no 24º mês. Nenhuma progressão foi observada nos 16 pacientes que tiveram um acompanhamento de 36 meses. Conclusões: O estudo mostrou que os olhos não tratados de pacientes com ceratocone progressivo bilateral não apresentaram taxas de progressão significativas após o tratamento unilateral com reticulação.

Avaliação do comportamento das fibras colágenas periodontais durante a progressão da periodontite experimental em ratos / Evaluation of the behaviour of periodontal collagen fibers during the progression of experimental periodontitis in rats

Introdução: A periodontite é uma doença infecto-inflamatória, resultante da disbiose microbiana e da resposta do hospedeiro, que leva à destruição dos tecidos de suporte dentário, inclusive das fibras colágenas periodontais, podendo culminar na perda do elemento dental. Objetivo: Avaliar o comportamento das fibras colágenas periodontais durante a progressão da periodontite experimental induzida em ratos. Material e método: Doze ratos Wistar foram distribuídos nos grupos: Controle (C), Periodontite Experimental 14-dias (PE-14d), Periodontite Experimental 21-dias (PE-21d) e Periodontite Experimental 42-dias (PE-42d). No dia 0, os animais do grupo C foram eutanasiados. Neste mesmo dia, os animais remanescentes foram submetidos à instalação de uma ligadura de algodão ao redor do primeiro molar inferior esquerdo para indução da periodontite experimental. Tais animais foram eutanasiados aos 14 (PE-14d), 21 (PE-21d) e 42 (PE-42d) dias após a instalação da ligadura. Executou-se o processamento histológico das hemimandíbulas e as secções foram submetidas à reação histoquímica pelo vermelho picro-sirius. A análise qualitativa descritiva foi realizada sob microscopia de luz polarizada, na região de furca dental, evidenciando as fibras do ligamento periodontal. Resultado: O grupo C exibiu feixes espessos e orientados de fibras colágenas maduras, condizentes com aspecto de normalidade. Os grupos com periodontite experimental exibiram desestruturação tecidual severa, com fibras colágenas imaturas e de menor espessura, sendo tais condições mais exacerbadas nos grupos PE-14d e PE-21d. Conclusão: As fases iniciais da periodontite apresentam caráter agudo e, portanto, resultam na rápida destruição dos tecidos periodontais de suporte, prejudicando potencialmente a fibrilogênese e a reestruturação do colágeno no ligamento periodontal.

Introduction: Periodontitis is an infectious-inflammatory disease resulting from microbial dysbiosis and host response that leads to the destruction of tooth support tissues, including periodontal collagen fibers, which may culminate in tooth loss. Objective: To evaluate the behavior of periodontal collagen fibers during the progression of induced experimental periodontitis in rats. Material and method: Twelve Wistar rats were distributed into groups: Control (C), 14-days Experimental Periodontitis (PE-14d), 21-days Experimental Periodontitis (PE-21d) and 42-days Experimental Periodontitis (PE-42d). At day 0, the animals of group C were euthanized. At the same day, the remaining animals were submitted to the installation of a cotton ligature around the lower left first molar for the induction of experimental periodontitis. The animals were euthanized at 14 (PE-14d), 21 (PE-21d) and 42 (PE-42d) days after the installation of ligature. Histological processing of the hemi-mandibles was performed and the sections underwent histochemical reaction using picro-sirius red. The descriptive qualitative analysis was performed under polarized light microscopy, in the dental furcation region, evidencing the fibers of the periodontal ligament. Result: Group C exhibited thick and oriented bundles of mature collagen fibers, consistent with a normal appearance. The groups with experimental periodontitis exhibited severe tissue disruption, with immature and thinner collagen fibers, with such conditions being more exacerbated in the PE-14d and PE-21d groups. Conclusion: The early stages of periodontitis present acute response, and therefore result in rapid destruction of periodontal support tissues and potentially impair fibrillogenesis and collagen restructuring in the periodontal ligament.

Management of conjunctival perforation and late Seidel after XEN® surgery. / Manejo de la perforación conjuntival y Seidel tardío poscirugía XEN®.

CLINICAL CASE: The case concerns a 78 year-old woman with a history of XEN® surgery, in whom a conjunctival perforation was observed at the implant level at 18-months of follow-up, for which surgical intervention was decided. During surgery a short subconjunctival portion was found (0.5mm). An unsuccessful attempt was made to extract it by traction, but the XEN® broke easily. Finally, it was decided to cut it to scleral level, and suture the conjunctiva. During the first week there was a decrease in intraocular pressure (6mmHg), to subsequently increase to 25, and deciding to start medical treatment. DISCUSSION: Conjunctival exposure of the XEN® stent is a rare but potentially serious complication. To avoid it, a meticulous surgical technique is important when implanting it. If this occurs, it is important to identify the cause. If it is due to a short subconjunctival portion, a therapeutic alternative is to cut the implant at this level to avoid further complications.

Fios de PDO, hidroxiapatita de cálcio e ácido l-polilático para flacidez vulvar - indicações, técnica e resultados / PDO threads, calcium hydroxyapatite and l-polylactic acid for vulvar flaccidity - indications, technique and results

Os grandes lábios tornam-se flácidos com o envelhecimento. Apesar de o preenchimento com ácido hialurônico proporcionar um rejuvenescimento significativo, ele também pode levar à formação de verdadeiros testículos vulvares se mal indicado, principalmente em vulvas excessivamente flácidas, que não suportam qualquer volumização adicional. Nesses casos de flacidez excessiva, acreditamos que os bioestimuladores de colágeno seriam o melhor tratamento inicial, pois sua injeção levaria à reposição de colágeno dérmico, com melhora da frouxidão, sem acréscimo expressivo de volume. Temos utilizado a hidroxiapatita de cálcio, o ácido l-polilático e os fios não espiculados de PDO, desde 2019, com bons resultados.

The labia majora become saggy with aging. Although filling with hyaluronic acid provides significant rejuvenation, it can also lead to the formation of true vulvar testicles if poorly indicated, especially in excessively flaccid vulvas, which do not support any further volumization. In these cases of excessive flaccidity, we believe that collagen biostimulators would be the best initial treatment, as their injection would lead to the replacement of dermal collagen and improvement in laxity, without a significant increase in volume. We have been using calcium hydroxyapatite, l-polylactic acid, and PDO threads since 2019, with good results.

Eficiência clínica de fios de polidioxanona no tratamento da flacidez tissular abdominal pós-parto: relato de caso / Clinical efficiency of polydioxanone threads in the treatment of postpartum abdominal tissue flaccidity: case report

Este estudo relata um caso de flacidez abdominal após 3 gestações no qual foi utilizada a técnica de fios de polidioxanona (PDO) lisos e espiculados, técnica ainda não descrita na literatura paratratarestaqueixa.Apacientefoiacompanhadapor90dias,ehouvemelhoradaabertura da prega umbilical, do tônus da pele, de densidade dérmica e da flacidez tissular após 60 dias. Neste período, a paciente declarou estar totalmente satisfeita e foiestabelecidaaaltadotratamento.Comestepresenterelatodecasopodemosconcluirquea terapia combinada de fios de PDO parafusos e fios de PDO espiculados (Sculpt®) apresentam resultados muito expressivos em relação a qualidade da pele promovendo melhora visível na flacidez tissular

Thisstudyreportsacaseofabdominalflaccidityafterthreepregnancies,inwhichthetechnique ofsmoothandspiculatedpolydioxanonethreadswasused,atechniquenotyetdescribedinthe literature to treat this complaint. The patient was followed up for 90 days, but there was an improvement in the opening of the umbilical fold, skin tone, increase in dermal density and especially a reduction in tissue flaccidity in 60 days. During this period, the patient declared thatshewascompletelysatisfied,anddischargefromtreatmentwasestablished.Withthiscase report, we can conclude that the combined therapy of PDO threads screws and PDO threads spiculated (Sculpt®) presentvery expressive results about the quality of the skin, promoting a visible improvement in tissue flaccidity

Clinical implementation of comprehending dentin on a microscopic level

SUMMARY: The aim of the present in vitro study is to visualize dentin to get an in-depth knowledge of the nature of dentin that could provide useful information regarding conditioning dentinal substrate when treating dentinal lesions. Forty-nine extracted human third molars were obtained and prepared to produce artificial dentinal lesions through demineralizing with acetic acid for 7 and 14 days, or lactic acid for 7 days. The teeth were divided into groups and treated with either NaOCl, pepsin, trypsin, or phosphoric acid. To obtain information on the morphology of the treated dentinal surfaces, all samples were visualized under high resolution field emission scanning electron microscope. With high magnification reaching x50000 dentin was clearly visualized together with its constitutes. The effect of various demineralization approaches and various treatment protocols were demonstrated clearly. The relationship between the conditioning procedure steps and the subsequent bond strength was discussed. To our best knowledge, there is no previous clear highly magnified scanning electron microscope images for dentin, and dentinal components and constitutes with and without various treatments. The current in vitro study suggests the complexity nature of dentin as a substrate that should be treated carefully especially with technique sensitive procedures such as adhesive restorations.

El objetivo del presente estudio in vitro fue visualizar la dentina para obtener un conocimiento completo de la naturaleza de ella lo que podría proporcionar información útil sobre el acondicionamiento del sustrato dentinario en el tratamiento de lesiones dentinarias. Se obtuvieron 49 terceros molares humanos extraídos y se prepararon para producir lesiones dentinales artificiales mediante desmineralización con ácido acético por 7 y 14 días, o ácido láctico por 7 días. Los dientes se dividieron en grupos y se trataron con NaOCl, pepsina, tripsina o ácido fosfórico. Para obtener información sobre la morfología de las superficies dentinarias tratadas, todas las muestras se visualizaron bajo un microscopio electrónico de barrido de emisión de campo de alta resolución. Con un gran aumento que alcanzó x50000, la dentina se visualizó claramente junto con sus componentes. Se demostró el efecto de varios enfoques de desmineralización y varios protocolos de tratamiento. Se discutió la relación entre los pasos del procedimiento de acondicionamiento y la subsiguiente fuerza de unión. Hasta donde sabemos, no hay imágenes claras previas de microscopio electrónico de barrido altamente ampliadas para la dentina y los componentes y constituyentes de la dentina con y sin diferentes tratamientos. El estudio in vitro actual sugiere la naturaleza compleja de la dentina como sustrato que debe tratarse con cuidado, especialmente en los procedimientos sensibles a la técnica, tal como las restauraciones adhesivas.