Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 182
Filtrar
1.
Int J Microbiol ; 2024: 6826495, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38716461

RESUMO

Hepatitis B virus (HBV) causes liver diseases (chronic hepatitis, cirrhosis, and hepatocellular carcinoma) and is a leading health problem worldwide. Sequencing of the whole HBV genome provides insight into the virus genotype, subgenotype, serotype, genetic variation, and viral drug resistance. To date, no study has been conducted on the whole genome sequence of HBV obtained from Iraqi patients. Therefore, this is the first study to sequence clinical samples from these patients. Viral genomic DNA was isolated and amplified using five primer sets to amplify five overlapping regions covering the entire HBV genome. The amplicons were sequenced, aligned to a reference sequence, annotated, and submitted to the National Center for Biotechnology Information GenBank database. Sequence analysis showed that the genome size of the tested viral samples was 3,182 bp and belonged to genotype D, subgenotype D1, and serotype ayw2. Missense mutations were found in the four regions (X, PreS1-S, PreC-C, and P) of the tested samples, leading to amino acid substitutions, which were 8.4%, 5.1%, 4.7%, and 4.6%, respectively. These mutations may cause severe liver diseases.

2.
Brief Bioinform ; 25(3)2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38770716

RESUMO

Temporal RNA-sequencing (RNA-seq) studies of bulk samples provide an opportunity for improved understanding of gene regulation during dynamic phenomena such as development, tumor progression or response to an incremental dose of a pharmacotherapeutic. Moreover, single-cell RNA-seq (scRNA-seq) data implicitly exhibit temporal characteristics because gene expression values recapitulate dynamic processes such as cellular transitions. Unfortunately, temporal RNA-seq data continue to be analyzed by methods that ignore this ordinal structure and yield results that are often difficult to interpret. Here, we present Error Modelled Gene Expression Analysis (EMOGEA), a framework for analyzing RNA-seq data that incorporates measurement uncertainty, while introducing a special formulation for those acquired to monitor dynamic phenomena. This method is specifically suited for RNA-seq studies in which low-count transcripts with small-fold changes lead to significant biological effects. Such transcripts include genes involved in signaling and non-coding RNAs that inherently exhibit low levels of expression. Using simulation studies, we show that this framework down-weights samples that exhibit extreme responses such as batch effects allowing them to be modeled with the rest of the samples and maintain the degrees of freedom originally envisioned for a study. Using temporal experimental data, we demonstrate the framework by extracting a cascade of gene expression waves from a well-designed RNA-seq study of zebrafish embryogenesis and an scRNA-seq study of mouse pre-implantation and provide unique biological insights into the regulation of genes in each wave. For non-ordinal measurements, we show that EMOGEA has a much higher rate of true positive calls and a vanishingly small rate of false negative discoveries compared to common approaches. Finally, we provide two packages in Python and R that are self-contained and easy to use, including test data.


Assuntos
RNA-Seq , Peixe-Zebra , Animais , Peixe-Zebra/genética , RNA-Seq/métodos , Perfilação da Expressão Gênica/métodos , Análise de Célula Única/métodos , Camundongos , Análise de Sequência de RNA/métodos , Software
3.
Front Artif Intell ; 7: 1351942, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38655268

RESUMO

Acute lymphoblastic leukemia (ALL) is a fatal blood disorder characterized by the excessive proliferation of immature white blood cells, originating in the bone marrow. An effective prognosis and treatment of ALL calls for its accurate and timely detection. Deep convolutional neural networks (CNNs) have shown promising results in digital pathology. However, they face challenges in classifying different subtypes of leukemia due to their subtle morphological differences. This study proposes an improved pipeline for binary detection and sub-type classification of ALL from blood smear images. At first, a customized, 88 layers deep CNN is proposed and trained using transfer learning along with GoogleNet CNN to create an ensemble of features. Furthermore, this study models the feature selection problem as a combinatorial optimization problem and proposes a memetic version of binary whale optimization algorithm, incorporating Differential Evolution-based local search method to enhance the exploration and exploitation of feature search space. The proposed approach is validated using publicly available standard datasets containing peripheral blood smear images of various classes of ALL. An overall best average accuracy of 99.15% is achieved for binary classification of ALL with an 85% decrease in the feature vector, together with 99% precision and 98.8% sensitivity. For B-ALL sub-type classification, the best accuracy of 98.69% is attained with 98.7% precision and 99.57% specificity. The proposed methodology shows better performance metrics as compared with several existing studies.

4.
Pol J Radiol ; 89: e134-e139, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38550957

RESUMO

Purpose: Primary hyperparathyroidism is mainly caused by parathyroid adenomas. Preoperative imaging can be performed using different imaging modalities, e.g. ultrasound (US), radionuclide scanning, magnetic resonance imaging, and computed tomography, often used in combination. Currently, US-guided blue dyes, especially methylene blue (MB) injection, are used to identify parathyroid tumours. Material and methods: This was a retrospective study of 228 patients. Preoperative ultrasound, scintigraphy, and bio-chemistry were performed on all patients, and fine-needle aspiration procedures were performed on suspected patients. Using preoperative US-G injection with MB dye, target tumours were injected in all cases. Results: A total of 163 patients were female and 65 were male. The mean age was 42.5 years. US was positive in 203 (89%) cases, 25 (11%) were negative, and all had a positive sestamibi scan (100%). US-G needle injections with MB dye of target tumours were successful in all cases. The average diameter of the lesions was 18 mm. All had positive intraoperative identification of parathyroid adenoma and MB staining (100% accuracy, 100% sensitivity, and 100% specificity). Operating time (min ± SD) was 22.7 ± 11.5 minutes, and the success rate was 100%. All were parathyroid adenomas histologically. Intraoperative parathormone hormone decreased in all patients. In postoperative follow-up, all were normocalcaemic with no local or systemic complications. Conclusions: Localisation of small parathyroid adenomas by US-guided blue dye injection is a safe, simple, and useful tool when performing parathyroidectomy with no complications.

5.
PLoS One ; 19(3): e0298305, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38512890

RESUMO

Skin cancer is one of the most fatal skin lesions, capable of leading to fatality if not detected in its early stages. The characteristics of skin lesions are similar in many of the early stages of skin lesions. The AI in categorizing diverse types of skin lesions significantly contributes to and helps dermatologists to preserve patients' lives. This study introduces a novel approach that capitalizes on the strengths of hybrid systems of Convolutional Neural Network (CNN) models to extract intricate features from dermoscopy images with Random Forest (Rf) and Feed Forward Neural Networks (FFNN) networks, leading to the development of hybrid systems that have superior capabilities early detection of all types of skin lesions. By integrating multiple CNN features, the proposed methods aim to improve the robustness and discriminatory capabilities of the AI system. The dermoscopy images were optimized for the ISIC2019 dataset. Then, the area of the lesions was segmented and isolated from the rest of the image by a Gradient Vector Flow (GVF) algorithm. The first strategy for dermoscopy image analysis for early diagnosis of skin lesions is by the CNN-RF and CNN-FFNN hybrid models. CNN models (DenseNet121, MobileNet, and VGG19) receive a region of interest (skin lesions) and produce highly representative feature maps for each lesion. The second strategy to analyze the area of skin lesions and diagnose their type by means of CNN-RF and CNN-FFNN hybrid models based on the features of the combined CNN models. Hybrid models based on combined CNN features have achieved promising results for diagnosing dermoscopy images of the ISIC 2019 dataset and distinguishing skin cancers from other skin lesions. The Dense-Net121-MobileNet-RF hybrid model achieved an AUC of 95.7%, an accuracy of 97.7%, a precision of 93.65%, a sensitivity of 91.93%, and a specificity of 99.49%.


Assuntos
Melanoma , Dermatopatias , Neoplasias Cutâneas , Humanos , Melanoma/diagnóstico por imagem , Melanoma/patologia , Dermoscopia/métodos , Detecção Precoce de Câncer , Neoplasias Cutâneas/diagnóstico por imagem , Neoplasias Cutâneas/patologia , Dermatopatias/diagnóstico por imagem , Redes Neurais de Computação
6.
Indian J Anaesth ; 68(2): 153-158, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38435651

RESUMO

Background and Aims: Maternal hypotension is a common and dangerous consequence after a subarachnoid block for a caesarean section. Combining pharmacological methods such as norepinephrine infusion, ondansetron and non-pharmacological methods in delayed supine positioning better impacts the maternal haemodynamic profile. The present study assessed the benefits and adverse effects of combining pharmacological and non-pharmacological methods in hypotension prophylaxis. Methods: This randomised controlled trial was conducted at Cairo University Hospital's obstetric theatre from January to October 2020. The study included 85 parturients who were randomised to two groups. Group Sitting was left seated for 2 min after injection, and Group Control was made to lie down in the supine position immediately after the subarachnoid block. Both groups received prophylactic intravenous norepinephrine infusion, in addition to an ondansetron bolus, before surgery. Patients' systolic blood pressure (SBP) from intrathecal injection until delivery of the foetus, was documented. Results: The Sitting group's SBP (122 (14) mmHg) till delivery was statistically higher than the Control group's readings (114 (10) mmHg) (P = 0.004). The Sitting group's intraoperative SBP values were often greater than the Control group values. In addition, the Sitting group had a reduced hypotension incidence and a lower rate of ephedrine use than the other group, but bradycardia incidence was comparable between both groups. Conclusion: In elective caesarean delivery, combining pharmacological and non-pharmacological methods achieve better results regarding maternal hypotension, vasopressor consumption, nausea and vomiting, and foetal outcomes.

7.
Cureus ; 16(2): e53683, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38455796

RESUMO

BACKGROUND: Carpal tunnel syndrome (CTS) is a common condition that can significantly affect the quality of life for individuals, particularly those with diabetes. This study aims to examine the severity of CTS symptoms among diabetic patients and explore the associations between demographic factors, diabetic characteristics, knowledge, and management approaches. METHODOLOGY: A cross-sectional study was conducted among diabetic patients, and data were collected using standardized questionnaires. The incidence and severity of CTS were assessed using the Boston Carpal Tunnel Questionnaire (BCTQ). Demographic information, diabetic characteristics, knowledge of CTS, and management approaches were also recorded. Descriptive statistics and inferential analysis were performed to analyze the data. RESULTS: The study included 303 participants. The majority of the participants were aged 50 or older (44.9%) (N=136), followed by those aged 39-49 (24.4%) (N=74). In terms of gender, there were more female participants (61.4%) (N=186) than male participants (38.6%) (N=117). Older age groups exhibited higher mean BCTQ scores, suggesting increased severity. Females had significantly higher severity scores compared to males (mean BCTQ score of 17.52 vs 15.56). Regarding diabetic characteristics, complications in the eye and pain/numbness in the legs or feet were significantly associated with higher severity scores of CTS (P=0.0001). The study revealed a knowledge gap among diabetic patients about CTS, with inadequate knowledge about its causes, symptoms, consequences, and treatment options among 68.6% of the patients. The use of medical interventions such as splints, injections, and surgery was associated with higher severity scores. CONCLUSION: This study highlights the incidence and severity of CTS symptoms among diabetic patients and its associations with demographic factors, diabetic characteristics, knowledge, and management approaches. Older age, female gender, widowed, diabetic complications in the eye, and pain/numbness in the legs or feet were found to be related to increased severity of CTS. Additionally, inadequate knowledge about CTS was observed among diabetic patients.

8.
Skin Res Technol ; 30(3): e13639, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38454571

RESUMO

BACKGROUND: MicroRNAs (miRNAs) are small RNA molecules that regulate gene expression in diverse biological processes. They hold promise as therapeutic candidates for targeting human disease pathways, although our understanding of their gene regulatory mechanism remains incomplete. Alopecia areata (AA) is a prevalent inflammatory ailment distinguished by the infiltration of T cells targeting the anagen-stage hair follicles. The scarcity of effective remedies for AA may stem from limited understanding regarding its precise cellular mechanism. AIM: To investigate and examine the importance and role of the miR-200c-3p as a genetic indicator for AA, and its possible impact on disease progression. SUBJECTS AND METHODS: Case-control study included 65 patients with AA and 65 matched healthy controls. A real-time PCR technique was used to measure the expression of miR-200c-3p for both groups. Bioinformatic tools were used for prediction with genes and gene-gene interaction, and protein-protein interaction. RESULTS: The expression levels of miR-200c-3p were significantly higher in AA patients than in healthy controls. We predicted that miR-200c-3p plays a markable role in the development of AA by its effect on the EGFR tyrosine kinase inhibitor resistance pathway. CONCLUSION: We were able to identify the influence of miR-200c-3p on both PLCG1 and RPS6KP1 genes which in turn regulate the EGFR tyrosine kinases resistance pathway that displayed the most substantial increase in activity. Our outcomes shed light on the era of the potential theranostic role of this innovative miRNA in AA.


Assuntos
Alopecia em Áreas , MicroRNAs , Humanos , Alopecia em Áreas/tratamento farmacológico , Alopecia em Áreas/genética , Marcadores Genéticos , Estudos de Casos e Controles , MicroRNAs/genética , MicroRNAs/metabolismo , Receptores ErbB/genética
9.
Saudi Pharm J ; 32(3): 101960, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38328794

RESUMO

Ephedra foeminea is traditionally used to treat breast cancer in several Arab countries. Scientific studies have reported different effects of this plant on some cancer cell lines. The current study determined the anti-cancer potential of the methanolic extract of Ephedra foeminea against four different types of breast cancer cell lines in-vitro. The extract was prepared by maceration and phytoconstituents were identified by LC-MS analysis. The IC50 value was determined against MDA-MB-231, MCF-7, 4 T1, and MCF-10 cell lines using the MTT assay. Further investigations were carried out using IC50 concentration of the extract (40.09 µg/ml) to determine live/dead cells by acridine orange/ethidium bromide staining. The effect on the expression of reactive oxygen species (ROS) was evaluated by flow cytometry. The results were analyzed using one-way ANOVA followed by Tukey's test. The LC-MS analysis revealed the presence of 34 and 30 phytoconstituents in positive and negative modes respectively. The Ephedra foeminea extract was most effective against 4 T1 cells in a dose-dependent manner (P < 0.001) with an IC50 value of 40.09 µg/ml and showed negligible effect against MCF-10 cells. It increased apoptosis in 77.84 % of 4 T1 cells, as determined by acridine orange/ethidium bromide staining. The extract also increased the ROS expression in the 39.57 % of 4 T1 cells. The study results showed that Ephedra foeminea extract possesses an anti-cancer effect against 4 T1 cells by increasing the expression of ROS and inducing apoptosis in the 4 T1 cells. The result suggests Ephedra foemenia methanolic extract possesses a reasonable anti-cancer effect due to its effect on apoptosis and oxidative pathways. The results confirm the traditional belief that Ephedra is effective against breast cancerز.

10.
J Oral Implantol ; 50(2): 95-102, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38353317

RESUMO

The aim of this study was to evaluate the radiographic and clinical outcomes of patients undergoing sinus membrane elevation via a minimally invasive crestal approach utilizing the dental implant. Twenty patients having 1 or more missing posterior teeth were included. The maxillary sinus membrane was elevated using dental implant via a crestal approach in areas with insufficient residual bone. CBCT scans were used to measure the amount of newly formed bone, implant length inside the sinus, bucco-palatal sinus width, and bone thickness. Surgical and postsurgical complications along with implant survival were also measured. The mean (±SD) values for the newly formed bone after 1 year were 2.4 (±1.87) mm, while values for implant length inside the sinus were 4 (±1.49) mm. The results showed that percentage of implant length inside the sinus and the palatal bone thickness were statistically significant positive predictors of the newly formed bone. Higher percentage of implant length inside the sinus and increased palatal bone thickness were associated with larger amounts of newly formed bone. A high patient satisfaction was reported along with a 100% implant survival. The utilization of the novel dental implant approach for crestal sinus elevation demonstrated predictable clinical and radiographic outcomes. This novel technique is simple to both patients and clinicians, rendering it a promising and cost-efficient procedure.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Implantação Dentária Endóssea , Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Humanos , Levantamento do Assoalho do Seio Maxilar/métodos , Feminino , Masculino , Pessoa de Meia-Idade , Implantação Dentária Endóssea/métodos , Adulto , Seio Maxilar/cirurgia , Seio Maxilar/diagnóstico por imagem , Resultado do Tratamento , Satisfação do Paciente , Idoso , Procedimentos Cirúrgicos Minimamente Invasivos , Complicações Pós-Operatórias
11.
Transplant Cell Ther ; 30(5): 534.e1-534.e13, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38342136

RESUMO

The use of reduced-intensity conditioning (RIC) regimens has increased in an effort to minimize hematopoietic stem cell transplantation (HCT) end-organ toxicity, including gonadal toxicity. We aimed to describe the incidence of fertility potential and gonadal function impairment in adolescent and young adult survivors of HCT and to identify risk factors (including conditioning intensity) for impairment. We performed a multi-institutional, international retrospective cohort study of patients age 10 to 40 years who underwent first allogeneic HCT before December 1, 2019, and who were alive, in remission, and available for follow-up at 1 to 2 years post-HCT. For females, an AMH level of ≥.5 ng/mL defined preserved fertility potential; an AMH level of ≥.03 ng/mL was considered detectable. Gonadal failure was defined for females as an elevated follicle-stimulating hormone (FSH) level >30 mIU/mL with an estradiol (E2) level <17 pg/mL or current use of hormone replacement therapy (regardless of specific indication or intent). For males, gonadal failure was defined as an FSH level >10.4 mIU/mL or current use of hormone replacement therapy. A total of 326 patients (147 females) were available for analysis from 17 programs (13 pediatric, 4 adult). At 1 to 2 years post-HCT, 114 females (77.6%) had available FSH and E2 levels and 71 (48.3%) had available AMH levels. FSH levels were reported for 125 males (69.8%). Nearly all female HCT recipients had very low levels of AMH. One of 45 (2.2%) recipients of myeloablative conditioning (MAC) and four of 26 (15.4%) recipients of reduced-intensity conditioning (RIC) (P = .06) had an AMH ≥.5 ng/m, and 8 of 45 MAC recipients (17.8%) and 12 of 26 RIC recipients (46.2%) (P = .015) had a detectable AMH level. Total body irradiation (TBI) dose and cyclophosphamide equivalent dose (CED) were not associated with detectable AMH. The incidence of female gonadal hormone failure was 55.3%. In univariate analysis, older age at HCT was associated with greater likelihood of gonadal failure (median age, 17.6 versus 13.9; P < .0001), whereas conditioning intensity (RIC versus MAC), TBI, chronic graft-versus-host disease requiring systemic therapy, and CED were not significantly associated with gonadal function. In multivariable analysis, age remained statistically significant (odds ratio [OR]. 1.11; 95% confidence interval [CI], 1.03 to 1.22) for each year increase; P = .012), Forty-four percent of the males had gonadal failure. In univariate analysis, older age (median, 16.2 years versus 14.4 years; P = .0005) and TBI dose (P = .002) were both associated with gonadal failure, whereas conditioning intensity (RIC versus MAC; P = .06) and CED (P = .07) were not statistically significant. In multivariable analysis, age (OR, 1.16; 95% CI, 1.06-1.27 for each year increase; P = .0016) and TBI ≥600 cGy (OR, 6.23; 95% CI, 2.21 to 19.15; P = .0008) remained significantly associated with gonadal failure. Our data indicate that RIC does not significantly mitigate the risk for gonadal failure in females or males. Age at HCT and (specifically in males) TBI use seem to be independent predictors of post-transplantation gonadal function and fertility status. All patients should receive pre-HCT infertility counseling and be offered appropriate fertility preservation options and be screened post-HCT for gonadal failure.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Condicionamento Pré-Transplante , Humanos , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Feminino , Masculino , Adulto , Adolescente , Criança , Estudos Retrospectivos , Condicionamento Pré-Transplante/efeitos adversos , Adulto Jovem , Fertilidade/fisiologia , Sobreviventes/estatística & dados numéricos , Hormônio Antimülleriano/sangue , Gônadas/fisiologia , Fatores de Risco
12.
N Engl J Med ; 390(6): 530-535, 2024 Feb 08.
Artigo em Inglês | MEDLINE | ID: mdl-38324486

RESUMO

Dystrophic epidermolysis bullosa is a rare genetic disease caused by damaging variants in COL7A1, which encodes type VII collagen. Blistering and scarring of the ocular surface develop, potentially leading to blindness. Beremagene geperpavec (B-VEC) is a replication-deficient herpes simplex virus type 1-based gene therapy engineered to deliver functional human type VII collagen. Here, we report the case of a patient with cicatrizing conjunctivitis in both eyes caused by dystrophic epidermolysis bullosa who received ophthalmic administration of B-VEC, which was associated with improved visual acuity after surgery.


Assuntos
Colágeno Tipo VII , Epidermólise Bolhosa Distrófica , Terapia Genética , Humanos , Vesícula/etiologia , Cicatriz/etiologia , Colágeno Tipo VII/genética , Epidermólise Bolhosa Distrófica/complicações , Epidermólise Bolhosa Distrófica/genética , Epidermólise Bolhosa Distrófica/terapia , Conjuntivite/etiologia
13.
Curr Med Chem ; 2024 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-38299295

RESUMO

Small endogenous non-coding RNA molecules known as micro-ribonucleic acids (miRNAs) control post-transcriptional gene regulation. A change in miRNA expression is related to various diseases, including bone tumors. Benign bone tumors are categorized based on matrix production and predominant cell type. Osteochondromas and giant cell tumors are among the most common bone tumors. Interestingly, miRNAs can function as either tumor suppressor genes or oncogenes, thereby determining the fate of a tumor. In the present review, we discuss various bone tumors with regard to their prognosis, pathogenesis, and diagnosis. The association between miRNAs and bone tumors, such as osteosarcoma, Ewing's sarcoma, chondrosarcoma, and giant-cell tumors, is also discussed. Moreover, miRNA may play an important role in tumor proliferation, growth, and metastasis. Knowledge of the dysregulation, amplification, and deletion of miRNA can be beneficial for the treatment of various bone cancers. The miRNAs could be beneficial for prognosis, treatment, future drug design, and treatment of resistant cases of bone cancer.

14.
Cell Rep ; 43(2): 113744, 2024 Feb 27.
Artigo em Inglês | MEDLINE | ID: mdl-38329874

RESUMO

Peroxisome biogenesis disorders (PBDs) represent a group of metabolic conditions that cause severe developmental defects. Peroxisomes are essential metabolic organelles, present in virtually every eukaryotic cell and mediating key processes in immunometabolism. To date, the full spectrum of PBDs remains to be identified, and the impact PBDs have on immune function is unexplored. This study presents a characterization of the hepatic immune compartment of a neonatal PBD mouse model at single-cell resolution to establish the importance and function of peroxisomes in developmental hematopoiesis. We report that hematopoietic defects are a feature in a severe PBD murine model. Finally, we identify a role for peroxisomes in the regulation of the major histocompatibility class II expression and antigen presentation to CD4+ T cells in dendritic cells. This study adds to our understanding of the mechanisms of PBDs and expands our knowledge of the role of peroxisomes in immunometabolism.


Assuntos
Transtornos Peroxissômicos , Síndrome de Zellweger , Animais , Camundongos , Síndrome de Zellweger/metabolismo , Peroxissomos/metabolismo , Apresentação de Antígeno , Transtornos Peroxissômicos/metabolismo
15.
J Vasc Surg Venous Lymphat Disord ; 12(2): 101694, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37890586

RESUMO

OBJECTIVE: Ethanol has been a commonly used sclerosant for low-flow vascular malformations, but it carries a high risk of complications. Bleomycin has been recently introduced as a potentially effective treatment. The aim of this study was to evaluate the safety and efficacy of bleomycin intralesional injection for the treatment of low-flow vascular malformations and determine the different factors affecting the outcome. PATIENTS AND METHODS: A total of fifty patients with low-flow vascular malformations were enrolled in the study between April 2020 and March 2022. All patients underwent preoperative duplex ultrasound and magnetic resonance angiography. The procedure was performed under ultrasound and fluoroscopic guidance. All patients were assessed for the objective improvement, ultrasound assessment, and patient-reported outcome. RESULTS: The overall rate of objective improvement was 79.53% (78.05% in venous and 87.5% in lymphatic malformations), whereas 81.25% of the patients showed a degree of size reduction or complete obliteration on postoperative ultrasound. The patient-reported outcome analysis showed a statistically significant improvement in the mean score for the pain, overall symptoms, and self-confidence. On regression analysis, the only factor associated with poor objective outcome was diffuse lesions (ill-defined or extending in more than one body region or one compartment). No major complications were recorded. CONCLUSIONS: Bleomycin intralesional injection is a safe and effective treatment for low-flow vascular malformations.


Assuntos
Bleomicina , Malformações Vasculares , Humanos , Injeções Intralesionais , Malformações Vasculares/diagnóstico por imagem , Malformações Vasculares/tratamento farmacológico , Resultado do Tratamento , Soluções Esclerosantes/efeitos adversos , Escleroterapia/efeitos adversos , Estudos Retrospectivos
16.
Ann Plast Surg ; 92(2): 156-160, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-37962182

RESUMO

AIM OF WORK: The aim of this study is to present a new technique of using spreader grafts in the correction of crooked nose deformity with C-shaped deviation of the middle third of the nose. PATIENTS AND METHODS: This is a prospective case series study conducted on 18 patients with crooked nose deformity with C-shaped deviation of the middle third of the nose. All of the patients were managed by open septorhinoplasty. During surgery, a curved spreader graft was harvested from the nasal septum and placed on the convex side of the C-shaped deviation of the dorsal part of the nasal septum. Objective measurements of the angles of external nasal deviation (END) and the internal nasal valve (INV) angles were performed before and 6 months after the surgery. Subjective assessment of aesthetic satisfaction by the visual analog scale and nasal function by the nasal obstruction symptom evaluation scale was also performed before and 6 months after surgery. RESULTS: Eighteen patients were enrolled in the study and completed the minimum follow-up period of 6 months. The mean follow-up period was 17.3 months. Objectively, there was highly significant ( P < 0.00001) improvement of the END angle and INV angle. Subjectively, there was also highly significant ( P < 0.00001) improvement of both the nasal obstruction symptom evaluation score and the visual analog scale score for aesthetic satisfaction. CONCLUSIONS: The insertion of a curved unilateral spreader graft over the convexity of the deviated nasal dorsum can correct the END, improve the collapsed INV on both sides, and consequently achieve satisfactory aesthetic and functional outcomes.


Assuntos
Obstrução Nasal , Rinoplastia , Humanos , Obstrução Nasal/cirurgia , Nariz/cirurgia , Septo Nasal/cirurgia , Rinoplastia/métodos , Estética , Estudos Prospectivos , Resultado do Tratamento
17.
Skin Res Technol ; 29(8): e13424, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37632192

RESUMO

BACKGROUND: Macrophage scavenger receptor 1 gene (MSR1), is responsible for producing macrophage scavenger receptors. MSR1 is primarily located on the surfaces of various macrophage types and is known to exert a range of effects on the human body. These effects include influencing innate and adaptive immunological reactions, as well as contributing to the development of conditions such as atherosclerosis, dyslipidemia, liver and lung disease, and cancer. The unregulated assimilation of lipoproteins by MSR1 leads to the creation of macrophages rich in cholesterol that manifest as foam-like cells, ultimately contributing to dyslipidemia. This occurrence highlights the significance of MSR1 as a key player in the pathophysiology of dyslipidemia. AIM: In this study, we aimed to estimate variation in lipid profile in acne vulgaris (AV) patients. Also, we aimed to investigate the role of MSR1 in lipid profile variation. SUBJECTS AND METHODS: A case-control study consisting of 100 patients with AV and 104 healthy controls. Lipid profiles were assessed using normalized enzymatic processes and genotype analyses were performed by a polymerase chain reaction and standard Sanger sequencing. Predictions of variant effects were performed using in silico tools. RESULT: Our results indicated that the levels of lipid profile were higher in patients with AV than in healthy patients. The two haplotypes that were most prevalent in the patients were TCAC (16.5%) and CAGG (15.47%), whereas the two haplotypes that were more prevalent in the controls were TAAC (16.43%) and CCAC (15.62%). IVS5.59 C > A and rs433235 A > G are in linkage disequilibrium. Additionally, rs433235 A > G has a significant linkage disequilibrium with rs3747531 C > G. In silico analysis, tools indicated that the rs433235 A > G variant was disease-causing. CONCLUSION: Patients diagnosed with TCAC and CAGG exhibited a higher prevalence compared to healthy patients with TAAC and CCAC. The linkage disequilibrium between rs433235 A > G and IVS5.59 C > A has been established. Furthermore, there appears to be significant linkage disequilibrium between rs3747531 C > G and rs433235 A > G. These findings support the notion that genetic variations may play a critical role in the pathogenesis of these conditions.


Assuntos
Acne Vulgar , Dislipidemias , Humanos , Acne Vulgar/genética , Estudos de Casos e Controles , Dislipidemias/epidemiologia , Dislipidemias/genética , Lipídeos , Fígado
18.
Arch Razi Inst ; 78(2): 593-599, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37396738

RESUMO

Antioxidant and antibacterial chemicals are key sources in medicinal plants. Alkaloids, phenolics, steroids, terpenes, flavonoids, terpenes, and volatile oils are a few of these plants' secondary metabolites. Phytochemicals, particularly the secondary metabolites produced by plants, are important for human nutrition, well-being, illness prevention, and antibacterial properties. This study aimed to ascertain the aqueous broccoli extract's chemical makeup. The phytochemical molecule that the GC-MS technique identified. The DPPH assay, which is appropriate for regular plant material screening, was performed to assess the antioxidant capacities of broccoli extract (in vitro). Subsequently looks at how well they perform against different Gram-positive and Gram-negative harmful microorganisms. GC-MS analysis of Broccoli extract revealed the existence of the9-Octadecenamide, [C18H35O], Hexadecane [c16h34] and 2, 2, 2-trifluoroethyl 2-methyltetrahydro-5-oxo-3- furancarboxylate [C23H33NO6]. There were significant changes in the extract's ascorbic acid-free radical scavenging activity at 200, 100, and 25 g/ml (P≤0.05), and the activity was dose-dependent. The effectiveness of aqueous broccoli extract as a powerful, broad-spectrum antibacterial agent against tested bacteria is demonstrated by an increase in the diameter of the inhibition zone, which increases in direct proportion to the concentration of the extract and even surpasses the activity of some antibiotics. An appropriate concentration of aqueous broccoli extract strongly inhibits microbial and antioxidant growth, especially when treating external infections without any danger against resistant bacterial isolates; it is strongly advised to use aqueous broccoli extract as a cost-effective alternative antibacterial and antioxidant agent.


Assuntos
Antioxidantes , Brassica , Humanos , Animais , Antioxidantes/farmacologia , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Cromatografia Gasosa-Espectrometria de Massas , Antibacterianos/farmacologia , Compostos Fitoquímicos/análise , Compostos Fitoquímicos/química , Compostos Fitoquímicos/farmacologia , Terpenos/análise
20.
Eur Heart J Cardiovasc Imaging ; 24(11): 1470-1477, 2023 10 27.
Artigo em Inglês | MEDLINE | ID: mdl-37485990

RESUMO

AIMS: It is not well understood whether positron emission tomography (PET)-derived myocardial flow reserve (MFR) is prognostic among patients with prior coronary artery bypass grafting (CABG). METHODS AND RESULTS: Consecutive patients with a clinical indication for PET were enrolled in the Houston Methodist DeBakey Heart and Vascular Center PET registry and followed prospectively for incident outcomes. The primary outcome was a composite of all-cause death, myocardial infarction (MI)/unplanned revascularization, and heart failure admissions. Cox proportional hazards models were used to study the association between MFR (<2 vs. ≥2) and incident events adjusting for clinical and myocardial perfusion imaging variables. The study population consisted of 836 patients with prior CABG; mean (SD) age 68 (10) years, 53% females, 79% Caucasian, 36% non-Hispanic, and 66% with MFR <2. Over a median (interquartile range [IQR]) follow-up time of 12 (4-24) months, there were 122 incident events (46 HF admissions, 28 all-cause deaths, 23 MI, 22 PCI/3 repeat CABG 90 days after imaging). In adjusted analyses, patients with impaired MFR had a higher risk of the primary outcome [hazard ratio (HR) 2.06; 95% CI 1.23-3.44]. Results were significant for admission for heart failure admissions (HR 2.92; 95% CI 1.11-7.67) but not for all-cause death (HR 2.01, 95% CI 0.85-4.79), or MI/UR (HR 1.93, 95% CI 0.92-4.05). CONCLUSION: Among patients with a history of CABG, PET-derived global MFR <2 may identify those with a high risk of subsequent cardiovascular events, especially heart failure, independent of cardiovascular risk factors and perfusion data.


Assuntos
Doença da Artéria Coronariana , Insuficiência Cardíaca , Infarto do Miocárdio , Imagem de Perfusão do Miocárdio , Intervenção Coronária Percutânea , Feminino , Humanos , Idoso , Masculino , Prognóstico , Intervenção Coronária Percutânea/efeitos adversos , Ponte de Artéria Coronária/efeitos adversos , Ponte de Artéria Coronária/métodos , Infarto do Miocárdio/etiologia , Insuficiência Cardíaca/etiologia , Doença da Artéria Coronariana/diagnóstico por imagem , Doença da Artéria Coronariana/cirurgia , Doença da Artéria Coronariana/complicações , Imagem de Perfusão do Miocárdio/métodos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA