Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 13 de 13
Filtrar
1.
Curr Oncol ; 31(5): 2881-2894, 2024 05 17.
Artigo em Inglês | MEDLINE | ID: mdl-38785501

RESUMO

This study investigates the differential expression of miRNA gene subtypes in tumoral versus benign nevi in individuals with melanoma, aiming to identify clinically significant correlations that could serve as reliable markers for assessing tumor stage and progression. Conducted between 2019 and 2022, this descriptive, quantitative observational research analyzed 90 formalin-fixed paraffin-embedded (FFPE) samples from the Pius Brinzeu County Emergency Clinical Hospital, Timisoara, including 45 samples of advanced-stage melanoma and 45 samples of pigmented nevi. miRNA purification and analysis were performed using the miRNeasy Kit and the Human Cancer PathwayFinder miScript miRNA PCR Array, with statistical analysis (including logistic regression) to determine associations with cancer staging, such as high Breslow index risk, number of mitoses, and vascular invasion. After the analysis and comparison of 180 miRNA gene subtypes, we selected 10 of the most upregulated and 10 most downregulated genes. The results revealed that hsa-miR-133b, hsa-miR-335-5p, hsa-miR-200a-3p, and hsa-miR-885-5p were significantly upregulated in melanoma samples, with fold changes ranging from 1.09 to 1.12. Conversely, hsa-miR-451a and hsa-miR-29b-3p showed notable downregulation in melanoma, with fold changes of 0.90 and 0.92, respectively. Additionally, logistic regression analysis identified hsa-miR-29b-3p (OR = 2.51) and hsa-miR-200a-3p (OR = 2.10) as significantly associated with an increased risk of a high Breslow index, while hsa-miR-127-3p and hsa-miR-451a were associated with a reduced risk. Conclusively, this study underscores the significant alterations in miRNA expression in melanoma compared to benign nevi and highlights the potential of specific miRNAs as biomarkers for melanoma progression. The identification of miRNAs with significant associations to melanoma characteristics suggests their utility in developing non-invasive, cost-effective diagnostic tools and in guiding therapeutic decisions, potentially improving patient outcomes in melanoma management.


Assuntos
Biomarcadores Tumorais , Progressão da Doença , Melanoma , MicroRNAs , Humanos , Melanoma/genética , Melanoma/patologia , MicroRNAs/genética , Masculino , Feminino , Pessoa de Meia-Idade , Biomarcadores Tumorais/genética , Neoplasias Cutâneas/genética , Neoplasias Cutâneas/patologia , Idoso , Adulto , Regulação Neoplásica da Expressão Gênica , Nevo Pigmentado/genética , Nevo Pigmentado/patologia
2.
J Clin Med ; 12(8)2023 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-37109284

RESUMO

This retrospective study aimed to evaluate the outcomes of bilateral cochlear implantation in patients with severe-to-profound sensorineural hearing loss at the Timisoara Municipal Emergency Clinical Hospital ENT Clinic. The study involved 77 participants, divided into four groups based on their hearing loss characteristics and implantation history. Assessments were conducted pre- and post-implantation, focusing on speech perception, speech production, and reading achievement. Standard surgical procedures were performed, and participants were provided with a comprehensive rehabilitation program involving auditory training and communication therapy. The variables considered for analysis included demographic factors, implantation period, and quality of life assessment, with no statistically significant differences pre-implantation between the four study groups. Results revealed significant improvements in speech perception, speech production, and reading achievement after cochlear implantation. In adult patients, speech perception scores increased from 21.3% to 73.4% for WIPI and from 22.7% to 68.4% for HINT after 12 months of rehabilitation. Speech production scores improved from 33.5% to 76.8% and reading achievement scores increased from 76.2 to 106.3. Moreover, there was a significant improvement in patients' quality of life following cochlear implantation, with mean scores increasing from 2.0 to 4.2. Although it is known that bilateral cochlear implantation significantly improves speech perception, speech production, reading achievement, and quality of life in patients with severe-to-profound sensorineural hearing loss, this is the first study of its kind from Romania. Further research is warranted to optimize patient selection and rehabilitation strategies to maximize outcomes and determine better policies towards funding and access of cochlear implants for a wider range of patients in need.

3.
Curr Oncol ; 30(2): 1516-1528, 2023 01 23.
Artigo em Inglês | MEDLINE | ID: mdl-36826077

RESUMO

Almost one-third of all malignant melanoma patients exhibit emotional stress indicating the need for professional care. Considering this, patients' psychological needs are routinely overlooked and unfulfilled, even though there is substantial evidence that psychological therapies may enhance psychosocial outcomes for melanoma patients, such as low mood, sadness, and anxiety. Among developing countries and some health systems in developed regions, the lack of awareness and screening methods for skin cancer creates a high risk of psychological issues associated with more advanced diseases. Therefore, the current study aimed to investigate and compare the impact of malignant melanoma awareness for screening, prevention, and treatment on the patient's quality of life and coping with stress and depression, based on patients' age. This cross-sectional study recruited 238 patients with malignant melanoma distributed into two groups, Group A patients between 18 and 65 years and Group B patients older than 65. There were no significant gender differences and cancer staging differences between groups, although self-reported depressed mood and anhedonia were significantly more frequent in younger adults with malignant melanoma (43.8% vs. 28.9%). From the unstandardized surveys, it was observed that significantly fewer patients from Group B knew that melanoma could be caused by sun exposure (34.2% vs. 52.2%), and they were less likely to use sunscreen or visit a doctor to evaluate their skin moles (25.9% vs. 14.5%). Elderly patients preferred television as the main source of information, and only 68.4% of patients from Group B were using smart devices. There was a significantly higher physical score on the SF-12 scale among Group A patients, although patients from Group B scored higher in the mental health assessment, and the perceived helplessness on the PSS-10 scale was significantly higher compared to younger adults with melanoma (2.97 vs. 2.71, p-value = 0.036). Lower scores on the physical and mental SF-12 questionnaire determined a higher presence of depressive symptoms (rho = -0.352, respectively rho = -0.273). Higher scores on the DLQI sexual difficulties and treatment difficulties also correlated significantly with the presence of depressive symptoms and anhedonia (rho = 0.341, respectively rho = 0.264). Awareness campaigns for malignant melanoma should focus on the elderly population, too, using the television as the main communication channel. On the other hand, the more informed and knowledgeable group of adults younger than 65 are more likely to experience psychological problems and should be targeted for psycho-oncological aid.


Assuntos
Melanoma , Neoplasias Cutâneas , Idoso , Adulto , Humanos , Qualidade de Vida/psicologia , Depressão/etiologia , Anedonia , Estudos Transversais , Melanoma/patologia , Adaptação Psicológica , Melanoma Maligno Cutâneo
4.
J Pers Med ; 13(2)2023 Jan 25.
Artigo em Inglês | MEDLINE | ID: mdl-36836443

RESUMO

Background: The management of acute surgical pathology implies not only the diagnosis-treatment sequence but also an important preventive component. In the surgical hospital department, wound infection is one of the most frequent complications which must be managed both in a preventive and a personalized manner. To achieve this goal, several factors of negative local evolution, contributing to the slowdown of the healing processes, such as the colonization and contamination of the wounds, need to be emphasized and controlled from the first moment. In this context, knowing the bacteriological status at admission ensures the distinction between the colonization and infection processes and could help to manage in an efficient way the fight against bacterial pathogen infections from the beginning. Methods: A prospective study was performed for 21 months on 973 patients hospitalized as emergencies in the Plastic and Reconstructive Surgery Department within the Emergency University County Hospital of Brasov, Romania. We analyzed the bacteriological profile of the patients from admission to discharge and the bidirectional and cyclic microorganism dynamics both in the hospital and the community microbial environment. Results: Of the 973 samples collected at admission, 702 were positive, with 17 bacterial species and one fungal, with a predominance of Gram-positive cocci at 74,85%. The most frequently isolated strains were Staphylococcus species (86.51% of the Gram-positive/64.7% of the total isolated strains), while Klebsiella at 8.16% and Pseudomonas aeruginosa species at 5.63% were mainly emphasized in the case of Gram-negative bacilli. Two to seven pathogens were introduced after admission, suggesting that the community microbial environment is in a process of evolution and enrichment with hospital pathogens. Conclusions: The high level of positive bacteriological samples and the complex associations of the pathogens found at the admission bacteriological screening sustain the new idea that the pathogenic microorganisms existing in the community microbial environment have started to increasingly influence the hospital microbial environment, in contrast with the previous consideration, which emphasized only the unidirectional relationship between hospital infections and the changing bacteriological characteristics of the community environment. This modified paradigm must become the basis of a new personalized approach to the management of nosocomial infections.

5.
J Pers Med ; 13(2)2023 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-36836551

RESUMO

The great majority of existing studies suggests that the prognosis and outcomes of SARS-CoV-2 infections are improved with adequate vitamin D levels, with or without supplementation. Simultaneously, whether vitamin D supplementation during pregnancy lessens the chance of developing gestational hypertension is controversial. The objective of the present research was to evaluate whether vitamin D levels during pregnancy differ substantially among pregnant women who develop gestational hypertension following SARS-CoV-2 infection. The current research was designed as a prospective cohort following the pregnant women admitted to our clinic with COVID-19 until 36 weeks of gestation. Total vitamin D (25(OH)D) levels were measured in the three study groups in which pregnant women with COVID-19 during pregnancy and a diagnosis of hypertension after 20 weeks of gestation were considered the group of cases (GH-CoV). The second group (CoV) included those with COVID-19 and no hypertension, while the third group (GH) included those with hypertension and no COVID-19. It was observed that 64.4% of SARS-CoV-2 infections in the group of cases occurred during the first trimester, compared to 29.2% in the first trimester among the controls who did not develop GH. Normal vitamin D levels were measured at admission in a significantly higher proportion of pregnant women without GH (68.8% in the CoV group vs. 47.9% in the GH-CoV group and 45.8% in the GH group). At 36 weeks of gestation, the median values of 25(OH)D in the CoV group was 34.4 (26.9-39.7) ng/mL compared to 27.9 (16.2-32.4) ng/mL in the GH-CoV group and 29.5 ng/mL (18.4-33.2) in the GH group, while the blood pressure measurements remained over 140 mmHg among the groups who developed GH. There was a statistically significant negative association between serum 25(OH)D levels and systolic blood pressure (rho = -0.295; p-value = 0.031); however, the risk of developing GH was not significantly higher among pregnant women with COVID-19 if the vitamin D levels were insufficient (OR = 1.19; p-value = 0.092) or deficient (OR = 1.26; p-value = 0.057). Although insufficient or deficient vitamin D among pregnant women with COVID-19 was not an independent risk factor for the development of GH, it is likely that an association between first-trimester SARS-CoV-2 infection and low vitamin D plays a key role in developing gestational hypertension.

6.
Artigo em Inglês | MEDLINE | ID: mdl-36767517

RESUMO

The Omicron (B.1.1.529) variant of the severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) had an increased rate of spreading among the general population. Although this virus mutation resulted in milder symptoms, those on the vulnerable side of the population are still in danger of developing severe symptoms. Thus, this systematic review focused on identifying the clinical outcomes of older age patients (>65) that are hospitalized with the SARS-CoV-2 Omicron variant. The research was conducted using four electronic databases (PubMed, Scopus, Web of Science, and ProQuest Central), with a search query in December 2022 that comprised the duration of the COVID-19 pandemic. The inclusion criteria comprised (1) a population of patients older than 65 years, (2) a history of hospitalization for SARS-CoV-2 infection, and (3) infection with Omicron B.1.1.529 variant. The initial search generated 295 articles, out of which six were included in the systematic review, and a total of 7398 patients. The main findings were that when looking at the elderly population, the mortality and hospitalization rates remained high. This is because older people are more vulnerable and have more comorbidities that interfere with the virus's progress. However, there is inconsistency in mortality rates, since the data reported by the included studies had different selection criteria based on the severity of the COVID-19 infection. Although no statistically significant differences were found between the unvaccinated and vaccinated groups, patients who got booster doses of vaccination had a lower likelihood of developing severe symptoms, serving as a protective factor for this population.


Assuntos
COVID-19 , SARS-CoV-2 , Humanos , Idoso , SARS-CoV-2/genética , COVID-19/epidemiologia , Pandemias , Bases de Dados Factuais
7.
J Clin Med ; 11(22)2022 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-36431282

RESUMO

Many elderly patients with severe SARS-CoV-2 infections and COVID-19 infections are admitted to intensive care units. Age was previously identified as an independent risk factor for death and contributed to the greater severity of COVID-19. The elderly may have diminished lung functions, poor reactions to artificial ventilation, and compromised immune systems. However, it is yet uncertain how each pandemic wave and the predominant SARS-CoV-2 strains contribute to varying results and how patient groups such as the elderly are impacted. Comparing six COVID-19 pandemic waves, the objective of this study was to examine the variation in case severity, symptomatology, ICU hospitalizations, and mortality among SARS-CoV-2-infected elderly individuals. The study followed a retrospective design, including 60 eligible patients older than 70 years in each of the six pandemic wave groups, after matching them by the number of comorbidities and gender. SARS-CoV-2 infection during the first, third, and fourth pandemic waves had a significantly higher risk of mortality for hospitalized patients. Confusion and dyspnea at admission were significant risk factors for ICU admission in elderly patients (ß = 1.92, respectively ß = 3.65). The laboratory parameters identified decreased lymphocytes (ß = 2.11), elevated IL-6 (ß = 1.96), and procalcitonin (ß = 2.46) as the most significant risk factors. The third and fourth COVID-19 waves had considerably more severe infections (31.7% and 26.7%) than the sixth wave (13.3%). Median ICU stay and percentage of patients receiving oxygen support also differed across pandemic waves. However, mortality rates between the six pandemic waves were similar. The average length of hospitalization varied dramatically among the six pandemic waves. Although senior patients are more likely to have worse COVID-19 outcomes after hospitalization, this risk is mitigated by the greater prevalence of comorbidities and frailty among the elderly. The six pandemic waves that were specifically evaluated did not reveal considerably disproportionate variations in terms of patient mortality; however, during the fourth pandemic wave, there were likely more hospitalized patients with severe COVID-19 in Romania. It is probable that certain circulating SARS-CoV-2 strains were more infectious, resulting in an increase in infections and a strain on healthcare systems, which might explain the variations found in our research.

8.
J Clin Med ; 11(21)2022 Oct 29.
Artigo em Inglês | MEDLINE | ID: mdl-36362640

RESUMO

There is still no general agreement about the most effective form of syndesmosis fixation with syndesmotic screws for patients affected by ankle fractures that are accompanied by syndesmotic injuries. In the same manner, no consensus has been reached yet on whether or not the tibiofibular syndesmotic screw is more beneficial if removed or not, as well as the exact timing of removal if this proves superiority. The purpose of this research was to verify whether or not removing syndesmotic screws reduces the risk of developing a diastasis and compare outcomes in patients whose syndesmotic screw was or was not removed at all. A retrospective observational study was carried out to cover a period of five years and a computed sample size of almost 300 cases. Patients were included in the current study if their history was positive for ankle fracture with distal tibiofibular diastasis repair with syndesmotic screws. Loss of reduction was more frequent after screw removal (8.5% vs. 2.1%), although the quality of reduction was generally excellent in both groups. The mean AOFAS score was significantly better in patients who had their tibiofibular screw removed (92.6 vs. 88.4), but the tibiofibular clear space and incisura fibularis depth widened more following the second intervention (3.8 mm vs. 3.6 mm, and, respectively, 4.3 vs. 4.1). Lastly, the same patients with tibiofibular screw removal had a significantly higher cost of total interventions and more days of medical leave (21 vs. 15 days on average). It seems that a strong conclusion in favor of removing or not removing syndesmotic screws after distal tibiofibular diastasis repair cannot be given. However, several radiographic findings lean toward the benefit of those patients whose tibiofibular screws were not removed, although mobility was notably better after the screw was removed. Furthermore, treatment expenses are greatly lowered if a subsequent operation for screw removal is avoided, as well as if individuals who have a single surgery take a shorter medical leave.

9.
Artigo em Inglês | MEDLINE | ID: mdl-35886351

RESUMO

Considering cancer patients may be at an increased risk of severe COVID-19 disease, their oncologic treatment cannot be delayed without risking their oncologic outcomes. Considering this, a comprehensive evaluation is required for the management of malignant diseases such as melanoma. The current study aimed to assess the impact of the COVID-19 pandemic on the delivery of cancer care services for patients diagnosed with malignant melanoma in Romania; to document the difference in patients' addressability and melanoma staging between the pandemic and pre-pandemic periods; as well as to determine the risk factors responsible for disease progression during the pandemic. We developed a retrospective analysis using a monocentric hospital database to compare the final 24 months of the pre-pandemic era to the first 24 months of the COVID-19 pandemic. All outpatients and inpatients with a diagnosis of malignant melanoma were screened during the study period and included in the analysis if matching the inclusion criteria. A total of 301 patients were included in the study, with 163 cases identified in the 24 months before the COVID-19 pandemic and 138 patients during the first 24 months of the pandemic. It was observed during the first two lockdown periods from March to May 2020, and, respectively, from October to December 2020, that significantly fewer patients with malignant melanoma presented for specialized medical care, while there was a statistically significantly lower proportion of outpatients due to COVID-19 restrictions (18.1% vs. 42.9%). The average Breslow depth was 1.1 mm before the pandemic, compared with 1.8 mm during the pandemic (p-value < 0.001). Third-stage patients were the most prevalent during both study periods, although with a statistically significant difference during the pandemic, with an increase from 90 (55.2%) patients to 94 (68.1%) (p-value < 0.001). The significant risk factors for disease progression were advanced AJCC stage (HR = 3.48), high Breslow index (HR = 3.19), postponed treatment (HR = 2.46), missed appointments (HR = 2.31), anemia at presentation (HR = 1.60), and patient's age (HR = 1.57). After the pandemic limitations are brought to an end, a broad skin-cancer-screening campaign is warranted to detect the missed cases during COVID-19.


Assuntos
COVID-19 , Melanoma , COVID-19/epidemiologia , Controle de Doenças Transmissíveis , Progressão da Doença , Humanos , Melanoma/epidemiologia , Pandemias , Estudos Retrospectivos , Romênia/epidemiologia , SARS-CoV-2 , Neoplasias Cutâneas , Melanoma Maligno Cutâneo
10.
Medicina (Kaunas) ; 59(1)2022 Dec 22.
Artigo em Inglês | MEDLINE | ID: mdl-36676644

RESUMO

Background and Objectives: Odontogenic infections (OI) represent a frequent cause of dental and maxillo-facial interventions, mostly due to late presentations or misdiagnosed complications. It is believed that the intensity of the immunoinflammatory response in OI is the main prognostic factor. Therefore, in this research, it was pursued to determine if the combination of C-reactive protein (CRP) and Neutrophil to Lymphocyte Ratio (NLR) (CRP-NLR) may serve as potential severity predictors in patients with odontogenic infections. Materials and Methods: A retrospective analysis on 108 patients hospitalized for odontogenic infections was conducted at the Department of Maxillofacial Surgery. Depending on the symptom severity scale, patients hospitalized with OI were divided into two equal groups based on infection severity (SS). Results: Patients with severe OI from Group B were associated more frequently with diabetes mellitus and smoking more often than those with a lower severity from Group A. In Group A, abscesses of odontogenic origin accounted for 70.4% of hospitalizations, while in Group B, abscesses and cellulitis were associated in 55.6% of cases (p-value < 0.001). The disease outcomes were more severe in Group B patients, where 22.2% of them developed sepsis, compared to 7.4% of Group A patients (p-value = 0.030). However, there was no significant difference in mortality rates. The SS and systemic immune inflammation index (SII) scores of Group B patients were substantially higher than Group A patients (13.6 vs. 6.1 for the SS score, p-value < 0.001), respectively, 2312.4 vs. 696.3 for the SII score (p-value < 0.001). All biomarker scores, including the CRP-NLR relationship, were considerably higher in Group B patients, with a median score of 341.4 vs. 79.0 in Group B (p-value < 0.001). The CRP-NLR association determined a 7.28-fold increased risk of severe OI. The receiver operating curve (ROC) analysis of CRP-NLR yielded an area under curve (AUC) value of 0.889, with high sensitivity (79.6%) and high specificity (85.1%), for predicting a severe odontogenic infection using biomarkers measured at hospital admission (p-value < 0.001). Conclusions: Therefore, it can be concluded that CRP-NLR is a reliable and affordable biomarker for determining the severity of odontogenic infections that may be included in other prognostic models for dental infections.


Assuntos
Proteína C-Reativa , Neutrófilos , Humanos , Adulto , Proteína C-Reativa/análise , Abscesso , Estudos Retrospectivos , Curva ROC , Linfócitos , Biomarcadores , Prognóstico
11.
Artigo em Inglês | MEDLINE | ID: mdl-36612627

RESUMO

It is hypothesized that the COVID-19 pandemic had a major impact on the epidemiology of malignant melanoma owing to diminished screening, diagnostic, and treatment capacities, resulting in a more advanced stage at initial presentation. The goal of this study is to undertake a systematic analysis of all epidemiological and clinical data on the trends and patient outcomes with malignant melanoma during the ongoing pandemic. Records were identified from PubMed, Cochrane, and Web of Science, selecting a total of 39 articles, narrative reviews, and editorial letters, following the PRISMA guidelines. The vast majority of the studies were published in Europe (28/39), and North America (7/39). A total of 99,860 patients were analyzed during 2020 and 2021 of the COVID-19 pandemic, and it was observed that malignant melanoma TNM staging increased significantly compared to the pre-pandemic period. Before the pandemic, 25.88% of patients had TNM stage II or above, compared to 36.25% during 2020-2021. During the COVID-19 pandemic, the malignant melanoma Breslow depth index grew from 1.59 mm before 2020 to 1.86 mm in 2020 and 2021. Patients decreased by 19.58% in 2020 and 2021 compared to pre-pandemic numbers. The patient-loss ratio indicated lower screening activity and patient addressability to dermatology and plastic surgery departments with skin cancer concerns during the COVID-19 pandemic. This systematic study shows that the identification and management of malignant melanoma during the COVID-19 pandemic faced major challenges which should alert medical systems to the high number of patients with advanced disease stages who may need emergency treatment and become incurable.


Assuntos
COVID-19 , Melanoma , Neoplasias Cutâneas , Humanos , COVID-19/epidemiologia , Pandemias/prevenção & controle , SARS-CoV-2 , Melanoma/epidemiologia , Neoplasias Cutâneas/epidemiologia , Melanoma Maligno Cutâneo
12.
Medicine (Baltimore) ; 100(4): e24092, 2021 Jan 29.
Artigo em Inglês | MEDLINE | ID: mdl-33530203

RESUMO

INTRODUCTION: Dissecting cellulitis of the scalp, or Hoffman disease, is described as an extremely rare condition. Clinically, it is represented by recurrent painful nodules, purulent drainage, interconnected sinus tracts and keloid formation, leading to scaring and cicatricial alopecia. Without a precise diagnosis and an adequate treatment, the repercussions consist of severe infectious complications along with psychological negative effects and serious aesthetic alterations. There is no standard treatment. In refractory cases, surgical management is reported. PATIENT CONCERNS: We report a case of a 65-year-old Caucasian male patient, with a 5-year history of Hoffman disease, who presented with multiple abscesses and sinus tracts of the scalp and patches of alopecia. The lesions were non-responsive to medical treatment. DIAGNOSIS: The diagnosis of DCS has been established on the basis of the clinical appearance and has been confirmed histopathologically. INTERVENTIONS: The patient underwent wide excision of the scalp, followed by reconstruction using free latissimus dorsi flap and covered by meshed split-thickness skin graft. OUTCOMES: Eighteen-month follow-up revealed complete remission of symptoms and lesions along with satisfactory cosmetic result. CONCLUSION: The scope of this case report is to raise awareness of the following aspects: Hoffman disease has an extremely low occurrence rate, a difficult differential diagnosis and no standard therapeutical strategy. It also highlights the effectiveness of scalpectomy and free latissimus dorsi flap covered by meshed split-thickness skin graft in treating a very advanced stage of the disease together with providing a natural contouring of the scalp. Ultimately, it discusses the other treatment alternatives.


Assuntos
Celulite (Flegmão)/cirurgia , Retalhos de Tecido Biológico , Dermatoses do Couro Cabeludo/cirurgia , Transplante de Pele/métodos , Idoso , Humanos , Masculino
13.
In Vivo ; 31(4): 649-655, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28652433

RESUMO

AIM: The aim of the study was to assess the effect of autologous fat graft on nerve regeneration by means of immunohistochemistry. MATERIALS AND METHODS: The rat sciatic nerve was used; complete transection followed by primary neurorrhaphy was performed on both hind legs, on the left side a processed fat graft was applied, surrounding the nerve. Nerve biopsies were collected and immunohistochemical procedures were performed for glial fibrillary acidic protein (GFAP) and for neurofilament-associated protein(NFAP). RESULTS: At 4 weeks, GFAP-positive cells were observed in the connective tissue formed between the two nerve endings on the left side only. At 10 weeks, GFAP-positive structures were present and exhibited a tendency to become linear on both sides, with an increased density on the left. NFAP-positive expression was present in the left treated limb with a disorganized pattern. CONCLUSION: Adipose tissue led to the stimulation of GFAP-positive Schwann cells, which could have a positive impact on nerve regeneration in the clinical setting.


Assuntos
Tecido Adiposo/transplante , Proteína Glial Fibrilar Ácida/genética , Regeneração Nervosa/genética , Células de Schwann/transplante , Tecido Adiposo/crescimento & desenvolvimento , Animais , Humanos , Regeneração Nervosa/fisiologia , Proteínas de Neurofilamentos/genética , Ratos , Células de Schwann/metabolismo , Transplante Autólogo/métodos , Transplantes/metabolismo , Transplantes/transplante
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA