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1.
Molecules ; 29(4)2024 Feb 08.
Artigo em Inglês | MEDLINE | ID: mdl-38398530

RESUMO

Endometriosis is a common gynecological condition with a complex physio-pathological background. This study aimed to assess the role of Rubus idaeus leaf extract (RiDE) as a potential therapeutic agent in reducing the size of the endometriotic lesions and modulate the plasma expression of MMP-2, MMP-9, and TGF-ß1. The endometriotic lesions were induced in a rat model by the autologous transplant of endometrium. Thirty-six female rats, Wistar breed, with induced endometriosis, were divided into four groups and underwent treatment for 28 days. The CTRL group received 0.5 mL/day of the vehicle; the DG group received 1 mg/kg b.w./day dienogest; the RiDG group received 0.25 mL/kg b.w./day RiDE and the D+RiDG group received 1 mg/kg b.w./day dienogest and 0.25 mL/kg b.w./day RiDE, respectively. Rats' weight, endometriotic lesion diameter and grade, and plasma levels of MMP-2, MMP-9, and TGF-ß1 were assessed before and after treatment. The administration of RiDE in association with dienogest vs. dienogest determined a lower weight gain and a reduction in diameter of the endometriotic lesions. RiDE administration restored MMP2 and MMP9 plasma levels to initial conditions. Rubus idaeus extract may help in reducing dienogest-associated weight gain, lower the size of endometriotic lesions, and have anti-inflammatory effects through MMP2 and MMP9 reduction.


Assuntos
Endometriose , Rubus , Humanos , Ratos , Feminino , Animais , Endometriose/metabolismo , Metaloproteinase 9 da Matriz/metabolismo , Metaloproteinase 2 da Matriz/metabolismo , Rubus/metabolismo , Fator de Crescimento Transformador beta1 , Polifenóis/uso terapêutico , Ratos Wistar , Melhoramento Vegetal , Aumento de Peso
2.
Cancer Immunol Immunother ; 72(4): 1003-1014, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36251029

RESUMO

Cholangiocarcinoma, the second most common liver malignancy, after hepatocarcinoma is highly aggressive and usually diagnosed in advanced cases. In the era of personalized medicine, targeted therapy protocols are limited for cholangiocarcinoma and the only potential curative treatment, surgical resection, is seldom applicable.This retrospective study included all cases with pathology-confirmed intrahepatic cholangiocarcinoma admitted in a tertiary healthcare facility during a 10-year timeframe. Clinical information, laboratory values, imaging studies, and survival data were retrieved, and PD-L1 immunostaining was performed on representative pathology slides, for each case. From the total of 136 included cases (49 surgical resections and 87 liver biopsies), 38.97% showed PD-L1 positivity on tumoral cells, 34.8% on tumor infiltrating immune cells, 10.11% on epithelial cells within the peritumoral area and 15.95% on immune cells from the peritumoral area. Overall survival was significantly higher in the first two scenarios. However, after adjusting for age, tumor number, tumor size, and tumor differentiation in a multivariate analysis, only PD-L1 positivity on tumor infiltrating immune cells remained a favorable prognostic for survival. High immune cell counts also correlated with increased overall survival.Our study demonstrated that PD-1/PD-L1 checkpoint pathway in the microenvironment of intrahepatic cholangiocarcinoma bears prognostic significance. PD-L1 expression on immune cells, in both resection and biopsy specimens, might be a strong independent predictor for a favorable outcome.


Assuntos
Neoplasias dos Ductos Biliares , Colangiocarcinoma , Humanos , Prognóstico , Estudos Retrospectivos , Antígeno B7-H1/metabolismo , Colangiocarcinoma/patologia , Linfócitos do Interstício Tumoral , Ductos Biliares Intra-Hepáticos/metabolismo , Ductos Biliares Intra-Hepáticos/patologia , Neoplasias dos Ductos Biliares/metabolismo , Microambiente Tumoral
3.
Int J Mol Sci ; 21(6)2020 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-32178454

RESUMO

Glioblastoma (GBM) consists of a heterogeneous collection of competing cellular clones which communicate with each other and with the tumor microenvironment (TME). MicroRNAs (miRNAs) present various exchange mechanisms: free miRNA, extracellular vesicles (EVs), or gap junctions (GJs). GBM cells transfer miR-4519 and miR-5096 to astrocytes through GJs. Oligodendrocytes located in the invasion front present high levels of miR-219-5p, miR-219-2-3p, and miR-338-3p, all related to their differentiation. There is a reciprocal exchange between GBM cells and endothelial cells (ECs) as miR-5096 promotes angiogenesis after being transferred into ECs, whereas miR-145-5p acts as a tumor suppressor. In glioma stem cells (GSCs), miR-1587 and miR-3620-5p increase the proliferation and miR-1587 inhibits the hormone receptor co-repressor-1 (NCOR1) after EVs transfers. GBM-derived EVs carry miR-21 and miR-451 that are up-taken by microglia and monocytes/macrophages, promoting their proliferation. Macrophages release EVs enriched in miR-21 that are transferred to glioma cells. This bidirectional miR-21 exchange increases STAT3 activity in GBM cells and macrophages, promoting invasion, proliferation, angiogenesis, and resistance to treatment. miR-1238 is upregulated in resistant GBM clones and their EVs, conferring resistance to adjacent cells via the CAV1/EGFR signaling pathway. Decrypting these mechanisms could lead to a better patient stratification and the development of novel target therapies.


Assuntos
Neoplasias Encefálicas/genética , Comunicação Celular/genética , Glioblastoma/genética , MicroRNAs/genética , Animais , Regulação Neoplásica da Expressão Gênica/genética , Humanos
4.
Medicina (Kaunas) ; 56(5)2020 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-32369983

RESUMO

Background and Objective: The imaging differentiation of benign from malignant intraperitoneal collections (IPCs) relies on the tumoral morphological modifications of the peritoneum, which are not always advocating for malignancy. We aimed to assess ascitic fluid with the apparent diffusion coefficient (ADC) to determine non-invasive, stand-alone, differentiation criteria for benign and malignant intraperitoneal effusions. Materials and Methods: Sixty-one patients with known IPCs who underwent magnetic resonance examinations for reasons such as tumor staging, undetermined abdominal mass and disease follow up were retrospectively included in this study. All subjects had a final diagnosis of the fluid based on pathological examinations, which were divided into benign (n = 37) and malignant (n = 24) IPCs groups. ADC values were measured separately by two radiologists, and the average values were used for comparing the two groups by consuming the independent samples t-test. The receiver operating characteristic analysis was performed to test the ADC values' diagnostic ability to distinguish malignant from benign collections. Results: The differentiation between benign and malignant IPCs based on ADC values was statistically significant (p = 0.0034). The mean ADC values were higher for the benign (3.543 × 10-3 mm2/s) than for the malignant group (3.057 × 10-3 mm2/s). The optimum ADC cutoff point for the diagnosis of malignant ascites was <3.241 × 10-3 mm2/s, with a sensitivity of 77.78% and a specificity of 80%. Conclusions: ADC represents a noninvasive and reproducible imaging parameter that may help to assess intraperitoneal collections. Although successful in distinguishing malignant from benign IPCs, further research must be conducted in order to certify if the difference in ADC values is a consequence of the physical characteristics of the ascitic fluids or their appurtenance to a certain histopathological group.


Assuntos
Diagnóstico Diferencial , Imagem de Difusão por Ressonância Magnética/normas , Líquido Extracelular/diagnóstico por imagem , Neoplasias/classificação , Peritônio/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Imagem de Difusão por Ressonância Magnética/métodos , Imagem de Difusão por Ressonância Magnética/tendências , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/diagnóstico , Reprodutibilidade dos Testes , Estudos Retrospectivos , Romênia , Sensibilidade e Especificidade
5.
Medicina (Kaunas) ; 56(10)2020 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-32977428

RESUMO

Background and Objectives: To assess ovarian cysts with texture analysis (TA) in magnetic resonance (MRI) images for establishing a differentiation criterion for endometriomas and functional hemorrhagic cysts (HCs) that could potentially outperform their classic MRI diagnostic features. Materials and Methods: Forty-three patients with known ovarian cysts who underwent MRI were retrospectively included (endometriomas, n = 29; HCs, n = 14). TA was performed using dedicated software based on T2-weighted images, by incorporating the whole lesions in a three-dimensional region of interest. The most discriminative texture features were highlighted by three selection methods (Fisher, probability of classification error and average correlation coefficients, and mutual information). The absolute values of these parameters were compared through univariate, multivariate, and receiver operating characteristic analyses. The ability of the two classic diagnostic signs ("T2 shading" and "T2 dark spots") to diagnose endometriomas was assessed by quantifying their sensitivity (Se) and specificity (Sp), following their conventional assessment on T1-and T2-weighted images by two radiologists. Results: The diagnostic power of the one texture parameter that was an independent predictor of endometriomas (entropy, 75% Se and 100% Sp) and of the predictive model composed of all parameters that showed statistically significant results at the univariate analysis (100% Se, 100% Sp) outperformed the ones shown by the classic MRI endometrioma features ("T2 shading", 75.86% Se and 35.71% Sp; "T2 dark spots", 55.17% Se and 64.29% Sp). Conclusion: Whole-lesion MRI TA has the potential to offer a superior discrimination criterion between endometriomas and HCs compared to the classic evaluation of the two lesions' MRI signal behaviors.


Assuntos
Cistos , Endometriose , Cistos Ovarianos , Endometriose/diagnóstico por imagem , Feminino , Humanos , Imageamento por Ressonância Magnética , Espectroscopia de Ressonância Magnética , Estudos Retrospectivos
6.
Genes (Basel) ; 15(2)2024 02 05.
Artigo em Inglês | MEDLINE | ID: mdl-38397197

RESUMO

Congenital heart defects (CHDs) have had an increasing prevalence over the last decades, being one of the most common congenital defects. Their etiopathogenesis is multifactorial in origin. About 10-15% of all CHD can be attributed to copy number variations (CNVs), a type of submicroscopic structural genetic alterations. The aim of this study was to evaluate the involvement of CNVs in the development of congenital heart defects. We performed a cohort study investigating the presence of CNVs in the 22q11.2 region and GATA4, TBX5, NKX2-5, BMP4, and CRELD1 genes in patients with syndromic and isolated CHDs. A total of 56 patients were included in the study, half of them (28 subjects) being classified as syndromic. The most common heart defect in our study population was ventricular septal defect (VSD) at 39.28%. There were no statistically significant differences between the two groups in terms of CHD-type distribution, demographical, and clinical features, with the exceptions of birth length, weight, and length at the time of blood sampling, that were significantly lower in the syndromic group. Through multiplex ligation-dependent probe amplification (MLPA) analysis, we found two heterozygous deletions in the 22q11.2 region, both in patients from the syndromic group. No CNVs involving GATA4, NKX2-5, TBX5, BMP4, and CRELD1 genes were identified in our study. We conclude that the MLPA assay may be used as a first genetic test in patients with syndromic CHD and that the 22q11.2 region may be included in the panels used for screening these patients.


Assuntos
Variações do Número de Cópias de DNA , Cardiopatias Congênitas , Criança , Humanos , Variações do Número de Cópias de DNA/genética , Projetos Piloto , Reação em Cadeia da Polimerase Multiplex , Estudos de Coortes , Romênia , Cardiopatias Congênitas/genética
7.
Front Pharmacol ; 15: 1440985, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39286634

RESUMO

Recent advancements in proteomics have shown promise in identifying biomarkers for various cancers. Our study is the first to compare the serum proteomes of intrahepatic cholangiocarcinoma (iCCA) with cirrhosis (CIR), primary sclerosing cholangitis (PSC), and hepatocellular carcinoma (HCC), aiming to identify a proteomic signature that can effectively distinguish among these conditions. Utilizing high-throughput mass spectrometry on serum samples, we identified 845 proteins, of which 646 were suitable for further analysis. Unique clustering patterns were observed among the five groups, with significant proteomic differences. Our key findings include: S100 calcium-binding protein A9 (S100A9) and haptoglobin (HP) were more abundant in iCCA, while intercellular adhesion molecule 2 (ICAM2) was higher in HCC. Serum amyloid A1 (SAA1) and A4 (SAA4) emerged as potential biomarkers, with SAA1 significantly different in the iCCA vs healthy controls (HC) comparison, and SAA4 in the HCC vs HC comparison. Elevated levels of vascular cell adhesion molecule 1 (VCAM-1) in HCC suggested its potential as a differentiation and diagnostic marker. Angiopoietin-1 receptor (TEK) also showed discriminatory and diagnostic potential in HCC. ELISA validation corroborated mass spectrometry findings. Our study underscores the potential of proteomic profiling in distinguishing iCCA from other liver conditions and highlights the need for further validation to establish robust diagnostic biomarkers.

8.
Gynecol Endocrinol ; 29(5): 448-51, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23544715

RESUMO

BACKGROUND AND AIM: The adipose cell has been considered an inert cell from a secretory point of view. Studies over the past years have confirmed the capacity of the adipocyte to synthesize many substances including: adiponectin, leptin, which integrate multiple metabolic and endocrine signals. In the context of endometrial cancer, abdominal obesity as a risk factor is associated with a chronic inflammatory process, confirmed by the increase of inflammatory markers. The study aimed to identify a correlation between abdominal obesity, plasma adipokine levels and endometrial cancer. MATERIAL AND METHOD: Two groups of patients were included in the study: group I - 44 patients diagnosed with endometrial cancer, group II - 44 patients without gynecological pathology or inflammatory disorders. After the performance of clinical examination and anthropometric measurements, abdominal fat was determined by dual X-ray absorptiometry and plasma adiponectin and leptin levels were measured. RESULTS: A significantly higher abdominal fat and leptin value was found in the group of patients in with endometrial cancer (p < 0.0001), while the plasma adiponectin level was significantly lower, compared to the control group (p < 0.0001). Abdominal fat was in a negative linear correlation with the plasma adiponectin level and in a positive linear correlation with the plasma leptin level. CONCLUSIONS: The measurement of adiponectin and leptin levels associated with the determination of abdominal adipose tissue can be a useful predictor factor for endometrial cancer.


Assuntos
Gordura Abdominal , Adiponectina/sangue , Adiposidade , Neoplasias do Endométrio/etiologia , Leptina/sangue , Gordura Abdominal/metabolismo , Adipócitos/metabolismo , Adiponectina/metabolismo , Idoso , Estudos de Casos e Controles , Neoplasias do Endométrio/sangue , Feminino , Humanos , Leptina/metabolismo , Pessoa de Meia-Idade , Valor Preditivo dos Testes
9.
Children (Basel) ; 10(5)2023 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-37238360

RESUMO

Congenital heart defects (CHD) are the most common congenital abnormality, with an overall global birth prevalence of 9.41 per 1000 live births. The etiology of CHDs is complex and still poorly understood. Environmental factors account for about 10% of all cases, while the rest are likely explained by a genetic component that is still under intense research. Transcription factors and signaling molecules are promising candidates for studies regarding the genetic burden of CHDs. The present narrative review provides an overview of the current knowledge regarding some of the genetic mechanisms involved in the embryological development of the cardiovascular system. In addition, we reviewed the association between the genetic variation in transcription factors and signaling molecules involved in heart development, including TBX5, GATA4, NKX2-5 and CRELD1, and congenital heart defects, providing insight into the complex pathogenesis of this heterogeneous group of diseases. Further research is needed in order to uncover their downstream targets and the complex network of interactions with non-genetic risk factors for a better molecular-phenotype correlation.

10.
Diagnostics (Basel) ; 13(9)2023 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-37174934

RESUMO

Intrahepatic cholangiocarcinoma (iCCA) is the second most frequent primary hepatic malignant tumor, after hepatocellular carcinoma (HCC). Its incidence has risen worldwide, yet the only potentially curative treatment, surgical resection, is seldom applicable, and the median overall survival remains extremely low. So far, there are no personalized therapy regimens. This study investigated whether routine immunohistochemical stains have diagnostic and/or prognostic value in iCCA. Clinical, imaging, and pathology data were retrospectively gathered for patients diagnosed with iCCA, HCC, or liver metastases assessed using liver needle biopsies. Three study groups with an equal number of cases (n = 65) were formed. In the iCCA group, CK19, CA19-9, CK7, and CEA demonstrated the highest sensitivities (100%, 100%, 93.7%, and 82.6%, respectively). The most relevant stains used for diagnosing HCCs were Glypican 3, CD34 (sinusoidal pattern), and Hep Par 1, with corresponding sensitivities of 100%, 100%, and 98.2%. The immunohistochemical panels for diagnosing metastatic tumors were chosen after correlating the clinical data and morphologic H&E aspects. Moderate/intensely positive CK7 expression and absent/low amount of intratumoral immune cells were favorable prognostic factors and correlated with increased overall survival in both the univariate analysis and the multivariate regression adjusted for age, existence of cirrhosis, number of tumors, and tumor differentiation.

11.
J Pers Med ; 13(6)2023 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-37373978

RESUMO

BACKGROUND: Inflammation plays a significant role in the pathogenesis of aortic stenosis. This study aimed to investigate the prognostic value of the monocyte-HDL cholesterol ratio (MHR), a new inflammatory marker, in severe aortic stenosis (AS) patients who underwent transcatheter aortic valve replacement (TAVR). METHODS: A total of 125 patients with severe AS who underwent TAVR were assessed. Clinical, echocardiographic and laboratory data relevant to the research were retrospectively obtained from the patients' records. The MHR was determined by dividing the absolute monocyte count by the HDL-C value. The primary endpoints were overall and cardiovascular mortality. RESULTS: During a median follow-up time of 39 months, primary endpoints were developed in 51 (40.8%) patients (overall mortality) and 21 (16.8%) patients (cardiovascular mortality). A receiver operating characteristic (ROC) analysis showed that by using a cut-off level of 16.16, the MHR predicted the all-cause mortality with a sensitivity of 50.9% and specificity of 89.1%. In predicting cardiovascular mortality, the MHR exhibited a sensitivity of 80.9% and specificity of 70.1% when a cut-off level of 13.56 was used. In the multivariate analysis, the MHR (p < 0.0001; 95% CI: 1.06-1.15) and atrial fibrillation (p = 0.018; 95% CI: 1.11-3.38) were found to be significant predictors of overall mortality. CONCLUSIONS: This study showed a significant elevation in the MHR among patients who experienced all-cause and cardiovascular mortality and this ratio emerged as an independent predictor of all-cause death in patients with severe AS undergoing TAVR.

12.
J Gastrointestin Liver Dis ; 32(2): 170-181, 2023 06 22.
Artigo em Inglês | MEDLINE | ID: mdl-37345607

RESUMO

BACKGROUND AND AIMS: The aim of this study is to determine whether activated hepatic stellate cells (HSCs) may represent a prognostic marker of progressive liver fibrosis in chronic viral hepatitis C (VHC) before antiviral therapy. The possible correlation between HSCs immunohistochemical features, histopathological aspects and clinical data before therapy were also studied. METHODS: This retrospective pilot study was conducted on 27 liver biopsies from VHC patients before antiviral therapy. HSCs's immunohistochemical analysis used the antibodies alpha-smooth muscle actin (α-SMA), glial fibrillary acidic protein (GFAP) and vinculin. We correlated immunopositive HSCs with HCV load, liver stiffness (LS), fibrosis stage and necro-inflammatory degree before treatment. Also, we assessed the association between liver fibrosis after therapy, the sustained virological response at 12 weeks after therapy (SVR 12) and the type of therapy. RESULTS: HSCs were increased in VHC patients compared to controls, mainly in the intermediate and periportal lobular regions. α-SMA and vinculin HSCs correlated positively with fibrosis stage (p=0.044), (p=0.028). Furthermore, α-SMA and vinculin HSCs were associated with LS (p=0.027), (p=0.002) and viral load (p=0.021), (p=0.006), but not with necro-inflammation degree. GFAP HSCs inversely correlated with fibrosis stage (r= -0.475), LS (r= -0.422) and HCV load (r= -0.517), but positively with necro-inflammation degree (p=0.038). Liver fibrosis post therapy correlated positively with SVR12 (p<0.001) and the type of therapy (p=0.006) and SVR12 correlated positively with treatment's type (p=0.002). CONCLUSIONS: Activated HSCs may represent a marker of increased liver fibrosis in VHC. Different immunohistochemical markers can detect various HSCs subpopulations involved in the evolution of VHC and liver fibrosis.


Assuntos
Células Estreladas do Fígado , Hepatite C Crônica , Humanos , Células Estreladas do Fígado/metabolismo , Células Estreladas do Fígado/patologia , Vinculina/uso terapêutico , Projetos Piloto , Estudos Retrospectivos , Fígado/patologia , Hepatite C Crônica/complicações , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/tratamento farmacológico , Cirrose Hepática/diagnóstico , Cirrose Hepática/tratamento farmacológico , Fibrose , Inflamação , Antivirais/uso terapêutico
13.
Front Neuroanat ; 17: 1160742, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37389403

RESUMO

Introduction: Ventriculomegaly (VM) is a fetal brain malformation which may present independently (isolated form) or in association with different cerebral malformations, genetic syndromes or other pathologies (non-isolated form). Methods: This paper aims to study the effect of ventriculomegaly on the internal tridimensional architecture of fetal brains by way of Klingler's dissection. Ventriculomegaly was diagnosed using fetal ultrasonography during pregnancy and subsequently confirmed by necropsy. Taking into consideration the diameter of the lateral ventricle (measured at the level of the atrium), the brains were divided into two groups: moderate ventriculomegaly (with atrial diameter between 13 and 15 mm) and severe ventriculomegaly (with atrial diameter above 15 mm). Results and discussion: The results of each dissection were described and illustrated, then compared with age-matched reference brains. In the pathological brains, fascicles in direct contact with the enlarged ventricles were found to be thinner and displaced inferiorly, the opening of the uncinate fasciculus was wider, the fornix was no longer in contact with the corpus callosum and the convexity of the corpus callosum was inverted. We have studied the prevalence of neurodevelopmental delay in children born with ventriculomegaly in the literature and discovered that a normal developmental outcome was found in over 90% of the mild VM cases, approximately 75% of the moderate and 60% in severe VM, with the correlated neurological impairments ranging from attention deficits to psychiatric disorders.

14.
Diagnostics (Basel) ; 13(3)2023 Jan 26.
Artigo em Inglês | MEDLINE | ID: mdl-36766547

RESUMO

The conventional magnetic resonance imaging (MRI) evaluation and staging of cervical cancer encounters several pitfalls, partially due to subjective evaluations of medical images. Fifty-six patients with histologically proven cervical malignancies (squamous cell carcinomas, n = 42; adenocarcinomas, n = 14) who underwent pre-treatment MRI examinations were retrospectively included. The lymph node status (non-metastatic lymph nodes, n = 39; metastatic lymph nodes, n = 17) was assessed using pathological and imaging findings. The texture analysis of primary tumours and lymph nodes was performed on T2-weighted images. Texture parameters with the highest ability to discriminate between the two histological types of primary tumours and metastatic and non-metastatic lymph nodes were selected based on Fisher coefficients (cut-off value > 3). The parameters' discriminative ability was tested using an k nearest neighbour (KNN) classifier, and by comparing their absolute values through an univariate and receiver operating characteristic analysis. Results: The KNN classified metastatic and non-metastatic lymph nodes with 93.75% accuracy. Ten entropy variations were able to identify metastatic lymph nodes (sensitivity: 79.17-88%; specificity: 93.48-97.83%). No parameters exceeded the cut-off value when differentiating between histopathological entities. In conclusion, texture analysis can offer a superior non-invasive characterization of lymph node status, which can improve the staging accuracy of cervical cancers.

15.
Rom J Morphol Embryol ; 64(2): 115-133, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37518868

RESUMO

The paper provides an overview of the current understanding of different cells' biology (e.g., keratinocytes, Paneth cells, myoepithelial cells, myofibroblasts, chondroclasts, monocytes, atrial cardiomyocytes), including their origin, structure, function, and role in disease pathogenesis, and of the latest findings in the medical literature concerning the brown adipose tissue and the juxtaoral organ of Chievitz.


Assuntos
Células Epiteliais , Técnicas Histológicas , Humanos , Bochecha , Queratinócitos , Diagnóstico Diferencial
16.
J Perinat Med ; 40(4): 359-64, 2012 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-22752765

RESUMO

AIM: This study assesses the value of intraplacental vascularization indices, determined by three-dimensional (3D) power Doppler ultrasound, in the evaluation of placental circulation. A prospective study has been conducted on two groups of pregnant women. Group I included pregnant women with a normal evolution of the pregnancy, whereas group II consisted of pregnant women with preeclampsia. The subjects were assessed by ultrasound between the 28th and 38th week of amenorrhea. Intraplacental vascularization was studied by 3D and Doppler ultrasound. Intraplacental vascularization indices were calculated using the VOCAL program, whereas statistical processing was completed using descriptive and comparative statistical methods. RESULTS: The values of the three intraplacental vascularization indices were lower in the group of pregnancies with preeclampsia compared with the group with normal pregnancies. In normal pregnancies, the evolution of umbilical resistivity index (RI) values was statistically proven to be significantly correlated with the values of intraplacental vascularization indices. In the case of pathological pregnancies, RI values could be maintained within normal limits, whereas vascularization, flow, and vascularization-flow index values decreased significantly compared with the group of normal pregnancies. CONCLUSIONS: The determination of intraplacental vascularization indices can play an important role in the monitoring of placental circulation in pregnancies with a normal evolution and those with preeclampsia.


Assuntos
Placenta/irrigação sanguínea , Placenta/diagnóstico por imagem , Circulação Placentária/fisiologia , Pré-Eclâmpsia/diagnóstico por imagem , Pré-Eclâmpsia/fisiopatologia , Adulto , Feminino , Idade Gestacional , Humanos , Gravidez , Estudos Prospectivos , Ultrassonografia Doppler , Ultrassonografia Pré-Natal , Resistência Vascular
17.
World J Gastroenterol ; 28(15): 1508-1525, 2022 Apr 21.
Artigo em Inglês | MEDLINE | ID: mdl-35582128

RESUMO

Cholangiocarcinoma (CCA) arises from the ductular epithelium of the biliary tree, either within the liver (intrahepatic CCA) or more commonly from the extrahepatic bile ducts (extrahepatic CCA). This disease has a poor prognosis and a growing worldwide prevalence. The poor outcomes of CCA are partially explained by the fact that a final diagnosis is challenging, especially the differential diagnosis between hepatocellular carcinoma and intrahepatic CCA, or distal CCA and pancreatic head adenocarcinoma. Most patients present with an advanced disease, unresectable disease, and there is a lack in non-surgical therapeutic modalities. Not least, there is an acute lack of prognostic biomarkers which further complicates disease management. Therefore, there is a dire need to find alternative diagnostic and follow-up pathways that can lead to an accurate result, either singlehandedly or combined with other methods. In the "-omics" era, this goal can be attained by various means, as it has been successfully demonstrated in other primary tumors. Numerous variants can reach a biomarker status ranging from circulating nucleic acids to proteins, metabolites, extracellular vesicles, and ultimately circulating tumor cells. However, given the relatively heterogeneous data, extracting clinical meaning from the inconsequential noise might become a tall task. The current review aims to navigate the nascent waters of the non-invasive approach to CCA and provide an evidence-based input to aid clinical decisions and provide grounds for future research.


Assuntos
Adenocarcinoma , Neoplasias dos Ductos Biliares , Colangiocarcinoma , Neoplasias Hepáticas , Adenocarcinoma/patologia , Neoplasias dos Ductos Biliares/diagnóstico , Neoplasias dos Ductos Biliares/metabolismo , Neoplasias dos Ductos Biliares/terapia , Ductos Biliares Intra-Hepáticos/patologia , Biomarcadores , Biomarcadores Tumorais/metabolismo , Colangiocarcinoma/diagnóstico , Colangiocarcinoma/metabolismo , Colangiocarcinoma/terapia , Humanos , Neoplasias Hepáticas/patologia , Neoplasias Pancreáticas , Neoplasias Pancreáticas
18.
Rom J Morphol Embryol ; 63(1): 7-29, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36074664

RESUMO

This article is a review of new advances in histology, concerning either classification or structure of different tissular elements (basement membrane, hemidesmosomes, urothelium, glandular epithelia, adipose tissue, astrocytes), and various organs' constituents (blood-brain barrier, human dental cementum, tubarial salivary glands, hepatic stellate cells, pineal gland, fibroblasts of renal interstitium, Leydig testicular cells, ovarian hilar cells), as well as novel biotechnological techniques (tissue engineering in angiogenesis), recently introduced.


Assuntos
Tecido Adiposo , Engenharia Tecidual , Membrana Basal , Fibroblastos , Humanos , Glândulas Salivares/patologia , Engenharia Tecidual/métodos
19.
Curr Med Imaging ; 17(3): 390-395, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32703139

RESUMO

BACKGROUND: Intraperitoneal fluid accumulations are a common matter in current clinical practice, being encountered by most medical and surgical fields. OBJECTIVE: To assess ascites fluid with attenuation values in the form of Hounsfield units (HU) in order to determine a non-invasive differentiation criterion for the diagnosis of intraperitoneal collections. METHODS: Sixty patients with known intra-peritoneal collections who underwent computed tomography (CT) for reasons such as tumor staging, post-surgical follow-up or other indications, were retrospectively included in this study. All subjects had a final pathological analysis of the fluid collections. Two radiologists measured the attenuation values for each collection. The averaged values were used for comparing benign and malignancy-related ascites (MRA), bland and hemorrhagic ascites and infected and noninfected fluid collections by consuming the Mann-Whitney U test. Also, the receiver operating characteristic analysis was performed for the statistically significant results (P<0.05), and the area under the curve (AUC) was calculated. RESULTS: Attenuation values could differentiate between benign and MRA (P=0.04; AUC=0.656; sensitivity, 65.52%; specificity, 71.43%) but failed to distinguish between bland ascites and ascites with hemorrhagic component (P=0.85), and between infected and noninfected fluid collections (P=0.47). CONCLUSION: Although the results are statistically significant, the substrate of differentiation between benign and MRA ascites cannot be clearly stated. As being the first study to investigate this issue, it opens the way for other researches in the field to determine the dynamics of imaging quantitative measurements according to the fluid's pathological features.


Assuntos
Ascite , Tomografia Computadorizada por Raios X , Ascite/diagnóstico por imagem , Líquido Ascítico , Humanos , Curva ROC , Estudos Retrospectivos
20.
Healthcare (Basel) ; 9(10)2021 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-34682929

RESUMO

The current study evaluated the progress of continuum healthcare for patients living with human immunodeficiency virus (HIV) infection from Cluj County in two moments, 2016 and 2020, and compared the results to the Fast-Track targets (FTTs) proposed by the Joint United Nations Programme (UNAIDS) on HIV/AIDS. By the end of 2020, 368 out of 385 confirmed HIV-positive patients from Cluj County were under surveillance in our center, representing almost 95% of the patients living with HIV and knowing their diagnosis, compared to 87.9% in 2016. Nearly 97% of those in active follow-up from Cluj County were under antiretroviral therapy (ART) in 2020, compared to 89% in 2016. The number of virally suppressed patients from those under ART was almost 94% in 2020, compared to 82.7% in 2016, and the increase is observed regardless of the ART regime. A shift towards integrase strand transfer inhibitors, with a higher efficacy, fewer adverse effects, and fewer drug interactions, is observed, which could contribute to the decrease in HIV transmission.

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