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1.
Cureus ; 16(5): e60586, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38894777

RESUMO

Introduction Cyclin-dependent kinase inhibitor 2A (CDKN2A) is a suppressor carcinogenic gene that is upregulated across various types of cancer including breast, liver, thyroid, and bile duct cancer due to its crucial role in cell cycle regulation and cell division. Nevertheless, it is mostly investigated at the genetic level, but it is still poorly studied on pan-cancer analysis as a biomarker and this study shows its significant potential diagnostic and prognostic characteristics. However, this study aims to investigate the role of CDKN2A as a diagnostic and prognostic biomarker across various types of cancer focusing primarily on colon adenocarcinoma (COAD). Methods We investigated CDKN2A gene expression in a pan-cancer analysis across different types of cancer to show its diagnostic potential characteristics by using various bioinformatic tools, including Tumor Immune Estimation Resource (TIMER) 2.0, Gene Expression Profiling Interactive Analysis (GEPIA), and University of Alabama at Birmingham Cancer Data Analysis Portal (UALCAN) database. TIMER was used to profile gene expression across 32 types of cancer composed of 10,000 RNA-seq samples obtained from the Cancer Genome Atlas (TCGA) and to analyze the tumor-infiltrating immune cells. In addition, GEPIA and UALCAN were further used to analyze gene expression, in terms of gene regulation, pathological stages, and clinical parameters, including gender, age, and race. Therefore, we used GEPIA, UALCAN, and Kaplan-Meier plotter particularly across adenocarcinoma to investigate CDKN2A prognosis by studying its high expression association with the patient's overall survival rate to show the tumor progression. Then, we looked into the genetic alteration of CDKN2A by using the cBio Cancer Genomics Portal (cBioPortal), including 10 pan-cancer studies. We concluded the analysis with gene validation by using a public cohort in Gene Expression Omnibus (GEO). Results CDKN2A showed a trend of upregulation in most cancers and it was significantly upregulated in five cancers, which were commonly identifiable in three databases, including breast invasive carcinoma (p < 0.001), kidney chromophobe (p < 0.001), kidney renal clear cell carcinoma (p < 0.001), kidney renal papillary cell carcinoma (p < 0.001), and COAD (p < 0.001). The upregulation was significantly different in association with pathogenic stages II and III (pr(>F) = 0.00234) which was identifiable significantly in COAD more than in other cancers. The gene showed a high upregulation in association with poor prognosis of patient survival in three cancers, including COAD (log-rank p = 0.011), mesothelioma (log-rank p = 5.9e-07), and liver hepatocellular carcinoma (log-rank p = 0.0045). Therefore, COAD was the only comprehensively analyzed tumor to show a diagnostic and prognostic potential characteristic during high upregulation of CDKN2A. Furthermore, CDKN2A displayed a rare mutation in the form of deep deletion (9%) and revealed an upregulation associated with CD4+ T cells (p = 0.0108), macrophage (p = 0.0073), and neutrophils (p = 0.0272) as immune cells infiltrating COAD.  Conclusion Our study demonstrates the pan-cancer relevance of CDKN2A and revealed a novelty in showing CDKN2A underscores its potential as a diagnostic prognostic biomarker in COAD since CDKN2A is mostly studied at a genetic level across COAD.

2.
Cureus ; 16(4): e57603, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38707036

RESUMO

Background Chikungunya virus (CHIKV) infection poses a significant global health threat, necessitating a deeper understanding of its molecular mechanisms for effective management and treatment. This study aimed to understand the molecular and genetic mechanisms of CHIKV infection by analyzing microarray expression data. Methodology National Center for Biotechnology Information (NCBI) GEO2R with an adjusted p-value cut-off of <0.05 and |log2FC ≥ 1.5| was used to identify the differentially expressed genes involved in CHIKV infection using microarray data from the Gene Expression Omnibus (GEO) database, followed by enrichment analysis, protein-protein interaction (PPI) network construction, and, finally, hub gene identification. Results Analysis of the microarray dataset revealed 25 highly significant differentially expressed genes (DEGs), including 21 upregulated and four downregulated genes. PPI network analysis elucidated interactions among these DEGs, with hub genes such as ACTB and CTNNB1 exhibiting central roles. Enrichment analysis identified crucial pathways, including leukocyte transendothelial migration, regulation of actin cytoskeleton, and thyroid hormone signaling, implicating their involvement in CHIKV infection. Furthermore, the study highlights potential therapeutic targets such as ACTB and CTNNB1, which showed significant upregulation in infected cells. Conclusions These findings underscore the complex interplay between viral infection and host cellular processes, shedding light on novel avenues for diagnostic marker discovery and advancing antiviral strategies. In this study, we shed light on the molecular and genetic mechanisms of CHIKV infection and the potential role of ACTB and CTNNB1 genes.

3.
J Pak Med Assoc ; 74(4): 719-723, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38751268

RESUMO

Objective: To compare the procrastination and self-efficacy scores among students with respect to the academic year of dental undergraduate programme, and to assess the relationship between self-efficacy and academic procrastination among the students. METHODS: The descriptive study was conducted at Sindh Institute of Oral Health Sciences, Jinnah Sindh Medical University, Karachi, from January to March 2023, and comprised medical students of either gender from all the 4 academic years. Data was collected using a structured questionnaire whose validity was assessed using a pilot study. Data was analysed using SPSS 18. RESULTS: Of the 136 students, 84(61.8%) were females and 52(38.2%) were males. There were 34(25%) students from the 1st year, 32(23.5%) from 2nd year, 38(28%) from the 3rd year, and 32(23.5%) from the final year. The highest mean score for procrastination was from 3rd year students 67.7±12.8, while the highest mean score for self-efficacy was from 1st year students 30.2±4. There was no significant difference in terms of gender (p>0.05). Procrastination scores had a significant association with the academic year (p=0.016). Conclusion: Procrastination scores were high among the dental students with the highest score from 3rd year students. The academic environment should provide support help the students devise strategies to optimally utilise the available time.


Assuntos
Procrastinação , Autoeficácia , Estudantes de Odontologia , Humanos , Feminino , Masculino , Paquistão , Estudantes de Odontologia/psicologia , Estudantes de Odontologia/estatística & dados numéricos , Adulto Jovem , Inquéritos e Questionários , Educação em Odontologia/métodos , Adulto
4.
Lasers Med Sci ; 38(1): 246, 2023 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-37897567

RESUMO

To compare the microvasculature of the optic disc in open-angle glaucoma (OAG) and angle-closure glaucoma (ACG) after trabeculectomy. This study included 34 patients divided into two groups based on the angle: (1) the OAG Group, which included 24 eyes from 24 patients, and (2) the ACG Group, which included ten eyes from 10 patients. All patients were subjected to comprehensive ophthalmic examinations. It included best-corrected visual acuity (BCVA), Goldmann applanation tonometry, gonioscopy, slit-lamp biomicroscopy, dilated fundus examination, and stereoscopic examination of the optic disc. The central corneal thickness was measured using a Nidek AL scan optical biometer. The visual field was evaluated by standard automated perimetry using Humphrey Field Analyzer (24-2 Swedish interactive threshold algorithm; Carl-Zeiss Meditec, Dublin, CA). Moreover, optical coherence tomography angiography (OCT-A) was performed utilizing the RTVue XR Avanti scanner (Optovue Inc., Fremont, CA, USA) preoperatively as well as 1 month after surgery. There was a statistically significant increase in optic disc vessel density (VD) in the whole image, radial peripapillary, inferior, superior, temporal, and nasal quadrant in OAG after surgery. Regarding the change in VD after surgery in ACG patients, there was a statistically significant increase in optic disc VD in the whole image, radial peripapillary, inferior, superior, temporal, and nasal quadrant in ACG after surgery.Regarding the percentage of VD change following trabeculectomy surgery, there were highly significant differences between the two groups for the whole image, radial peripapillary, inferior quadrant, and temporal quadrant VD. Statistically significant changes were also observed in the superior and nasal quadrants of VD. However, no significant change in VD was detected within the disc. In conclusion, the optic disc VD improved after the reduction of intraocular pressure (IOP) by surgery in both OAG and ACG. However, ACG demonstrated a significant improvement than the OAG.


Assuntos
Glaucoma de Ângulo Fechado , Glaucoma de Ângulo Aberto , Disco Óptico , Trabeculectomia , Humanos , Glaucoma de Ângulo Aberto/cirurgia , Glaucoma de Ângulo Aberto/diagnóstico , Glaucoma de Ângulo Fechado/cirurgia , Glaucoma de Ângulo Fechado/diagnóstico , Trabeculectomia/efeitos adversos , Trabeculectomia/métodos , Testes de Campo Visual/métodos , Pressão Intraocular , Tomografia de Coerência Óptica/métodos
5.
J Pak Med Assoc ; 73(9): 1843-1846, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37817695

RESUMO

Objective: To assessthe clinical reasoning skills among dentalstudents, and to compare the diagnostic thinking ability of male and female students. METHODS: The cross-sectionalstudy was conducted from May to July 2021 at a public-sector dental school in Karachi, and comprised students of both genders from across allthe four years ofdentalschool.Datawas collectedusing thediagnostic thinking inventory which also assessed flexibility in thinking and knowledge structure inmemory.Datawas analysedusing SPSS 18. RESULTS: Of the 111 forms distributed, 108(98.2%) were received duly filled; 32 (29.35%) from male students and 76(69.72) from female students. Participants from the first year were 24(22%), second year 23(21%), third year 33 (30.27%) and the fourth year 29(26.6%).The reliability of diagnostic thinking inventory was 0.906, for knowledge structure in memory 0.661, andflexibility inthinking0.573.The correlationwassignificantforstudentsintheir 2nd, 3rdand4thyearsofstudies(p=0.01) The overall mean score was <150 which was poor. Both the knowledge structure in memory, and flexibility in thinking scores were higher for females compared to males(Significant at the level of 0.01). Conclusion: The clinical reasoning skills of students were low, and the diagnostic thinking ability of female students was better than that of their male counterparts.


Assuntos
Estudantes de Odontologia , Pensamento , Humanos , Masculino , Feminino , Reprodutibilidade dos Testes , Resolução de Problemas , Competência Clínica
6.
Biomolecules ; 13(7)2023 07 11.
Artigo em Inglês | MEDLINE | ID: mdl-37509137

RESUMO

The biosynthesis of silver nanoparticles (Ag NPs) could play a significant role in the development of commercial antimicrobials. Herein, the biosynthesis of Ag NPs was studied using the edible mushroom Pleurotus floridanus, and following its formation, spectrophotometry was used to detect the best mushroom content, pH, temperature, and silver concentration. After that, the morphology was described via transmission electron microscopy (TEM), and nanoscale-size particles were found ranging from 11 to 13 nm. The best conditions of Ag content and pH were found at 1.0 mM and 11.0, respectively. In addition, the best mushroom extract concentration was found at 30 g/L. According to XRD analysis, the crystal structure of the formed amorphous Ag NPs is cubic with a space group of fm-3m and a space group number of 225. After that, the function groups at the surface of the prepared Ag NPs were studied via FTIR analysis, which indicated the presence of C=O, C-H, and O-H groups. These groups could indicate the presence of mushroom traces in the Ag NPs, which was confirmed via the amorphous characteristics of Ag NPs from the XRD analysis. The prepared Ag NPs have a high impact against different microorganisms, which could be attributed to the ability of Ag NPs to penetrate the cell bacterial wall.


Assuntos
Anti-Infecciosos , Nanopartículas Metálicas , Nanopartículas Metálicas/química , Antibacterianos/farmacologia , Antibacterianos/química , Prata/química , Seguimentos , Anti-Infecciosos/farmacologia , Espectroscopia de Infravermelho com Transformada de Fourier , Extratos Vegetais/química
7.
Int Immunopharmacol ; 119: 110170, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37075673

RESUMO

Parkinson's disease (PD) drugs treat symptoms without inhibiting progression. In recent years, finding novel therapeutic medications that can halt disease progression has become crucial. Research on antidiabetic medicines is valuable in these investigations because of the parallels between the two disorders. Using Rotenone (ROT), a frequently used PD model, the possible neuroprotective benefits of Dulaglutide (DUL), an extended-acting glucagon-like peptide-1 agonist, were considered. Twenty-four rats were randomly assigned to 4 groups to complete this experiment (n = 6). 0.2 ml of the vehicle (1 ml of dimethyl sulfoxide (DMSO) diluted in sunflower oil) was administered to the standard control group subcutaneously with a 48-hour pause. The second group was administered ROT 2.5 mg/kg SC every 48 h for 20 days as a positive control group. The third and fourth groups were administered one dose of DUL each week (0.05 and 0.1 mg/kg SC, respectively) to their regimens. The mice received ROT (2.5 mg/kg SC) every 48 h for 20 days after receiving DUL for the initial dose (96 h later). The current study focused on the DUL's ability to preserve usual behavioral function, enhance antioxidant and anti-inflammatory pathways, inhibit alpha-synuclein (α-syn), and increase parkin levels. It is concluded that DUL acts as an antioxidant and an anti-inflammatory to protect against ROT-induced PD. However, more studies are required to support this finding.


Assuntos
Fármacos Neuroprotetores , Doença de Parkinson , Ratos , Camundongos , Animais , Doença de Parkinson/tratamento farmacológico , Rotenona , Antioxidantes/farmacologia , Fármacos Neuroprotetores/farmacologia , Fármacos Neuroprotetores/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Modelos Animais de Doenças
8.
Crit Care Nurs Q ; 46(2): 217-226, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36823748

RESUMO

We aimed to develop and validate a model for the criteria for admission of COVID-19 patients to the intensive care unit (ICU). A Delphi design study was conducted. The content validity index (CVI) was used to determine the degree of agreement among the experts to validate the content of the admission criteria tool. Eleven experts determined the validity. The evaluation was conducted using a 4-point rating scale. The accepted CVI value was 0.50 and more. The model was validated with 31 items in the 5 dimensions, with the item-CVI of 1, a face validity index of 1, and a scale-level content validity index (S-CVI) value of 1. We have developed and validated a red flag prediction model for ICU admission of COVID-19 patients. The accurate implementation of this model could improve the outcomes of those patients and possibly decrease mortality.


Assuntos
COVID-19 , Humanos , Inquéritos e Questionários , Unidades de Terapia Intensiva , Hospitalização , Reprodutibilidade dos Testes
9.
ACS Omega ; 7(49): 45535-45544, 2022 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-36530244

RESUMO

Microwave-assisted synthesis and spectral analysis of certain novel derivatives of 3,4-diaminothieno[2,3-b]thiophene-2,5-dicarbonitrile 1-7 were carried out. Compounds 1-7 were examined for cytotoxicity against MCF-7 and A549 cell lines using the quantitative MTT method, and gefitinib and erlotinib were used as reference standards. Compounds 1-7 were shown to be more active than erlotinib against the two cell lines tested. Compound 2 outperformed regular erlotinib by 4.42- and 4.12-fold in MCF-7 and A549 cells, respectively. The most cytotoxic compounds were subsequently studied for their suppression of kinase activity using the homogeneous time-resolved fluorescence assay versus epidermal growth factor receptor (EGFRWT) and EGFR790M. With IC50 values of 0.28 ± 0.03 and 5.02 ± 0.19, compound 2 was demonstrated to be the most effective against both forms of EGFR. Furthermore, compound 2 also had the best antioxidant property, decreasing the radical scavenging activity by 78%. Molecular docking research, on the other hand, was carried out for the analyzed candidates (1-7) to study their mechanism of action as EGFR inhibitors. In silico absorption, distribution, metabolism, excretion, and toxicity tests were also performed to explain the physicochemical features of the examined derivatives.

10.
Saudi Pharm J ; 30(6): 863-873, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35812142

RESUMO

Sodium-glucose co-transporter 2 (SGLT 2) inhibitors are a relatively new antidiabetic drug with antioxidant and anti-inflammatory properties. Therefore, this study aimed to investigate whether SGLT 2 inhibitors have a neuroprotective effect in PD. Twenty-four Wistar rats were randomized into four groups. The first one (control group) received dimethyl sulfoxide (DMSO) as a vehicle (0.2 mL/48 hr, S.C). The second group (positive control) received rotenone (ROT) (2.5 mg/kg/48 hr, S.C) for 20 successive days, whereas the third and fourth groups received empagliflozin (EMP) (1 and 2 mg/kg/day, orally), respectively. The two groups received rotenone (2.5 mg/kg/48 hr S.C) concomitantly with EMP for another 20 days on the fifth day. By the end of the experimental period, behavioral examinations were done. Subsequently, rats were sacrificed, blood samples and brain tissues were collected for analysis. ROT significantly elevated oxidative stress and proinflammatory markers as well as α-synuclein. However, dopamine (DP), antioxidants, tyrosine hydroxylase (TH), and Parkin were significantly decreased. Groups of (EMP + ROT) significantly maintained oxidative stress and inflammatory markers elevation, maintained α-synuclein and Parkin levels, and elevated TH activity and dopamine level. In both low and high doses, EMP produced a neuroprotective effect against the PD rat model, with the high dose inducing a more significant effect.

11.
Biomed Pharmacother ; 152: 113221, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35671582

RESUMO

The current study aimed to discover more effective drugs to treat osteoporosis (OP) with fewer side effects. OP was induced in 24 rats using dexamethasone (DEX) 7 mg/kg intramuscular once weekly for four weeks, with six rats as a negative control. The osteoporotic rats were divided into one untreated group (positive control) and three treated groups (n = 6) that received L-carnitine (L-Car) (100 mg/kg/d), simvastatin (SIMV) (10 mg/kg/d), and L-Car + SIMV in the same previous doses, all treatments were orally for four weeks. At the end of the experiment, serum calcium (Ca), phosphorous (P), alkaline phosphatase (ALP), osteoprotegerin (OPG), total antioxidant (TAO), creatine kinase (CK), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) levels were measured. The femur was histopathologically examined. Serum Ca, OPG, and TAO levels increased significantly, while P and ALP levels decreased in the L-Car and SIMV treated groups compared to the DEX-treated group. Moreover, there was a significant decrease in CK, ALT, and AST levels in the L-Car and L-Car + SIMV treated groups compared to the DEX treated group. CONCLUSIONS: L-Car and SIMV have antiosteoporotic effects, as well as a synergistic effect. Moreover, L-Car ameliorates SIMV-induced myotoxicity and hepatoxicity.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas , Osteoporose , Animais , Carnitina , Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Doença Hepática Induzida por Substâncias e Drogas/etiologia , Doença Hepática Induzida por Substâncias e Drogas/prevenção & controle , Glucocorticoides/toxicidade , Miotoxicidade , Osteoporose/induzido quimicamente , Osteoporose/tratamento farmacológico , Osteoporose/prevenção & controle , Ratos , Ratos Wistar , Sinvastatina/farmacologia , Sinvastatina/uso terapêutico
12.
Biomed Pharmacother ; 139: 111594, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33878623

RESUMO

The present study was carried out to explore the protective effect of carvedilol (CARV) on aluminum chloride-induced testicular damage in Westar rats. Forty adult male rats, aged 8 weeks, were randomly divided into 4 groups (10 rats each). Group I (control group) received normal saline; whereas group II animals were supplemented with CARV in a dose of 10 mg/kg/day. Group III received AlCl3 (30 mg/kg/day) whereas group IV was co-administered CARV and AlCl3 as the same doses in group II and III respectively. The route of the application was oral gavage for CARV and I.P for AlCl3 for 20 successive days. Exposure of rats to AlCl3 for 20 consecutive days resulted in a significant decrease in serum and testicular superoxide dismutase and catalase activities, serum testosterone level, and sperm count and motility; on the other hand, an increase in nitric oxide, malondialdehyde, aluminum, and serum tumor necrosis factor-alpha levels. Furthermore, histopathological changes in the testis exhibited marked testicular damage. In addition, it revealed a significant up-regulation in the level of the expression for the apoptotic marker; Caspase-3, and down-regulation in antiapoptotic marker Bcl2 and Nrf2 genes. On the other hand, the co-administration of CARV modulated the biochemical parameters, saved sperm count and motility, and the histopathological findings, also, restored the observed changes in Caspase-3, Bcl2, and Nrf2 transcriptional genes. These data suggested that administration of CARV protects against AlCl3 induced testicular oxidative, inflammatory, and apoptosis damage.


Assuntos
Alumínio/toxicidade , Carvedilol/farmacologia , Substâncias Protetoras/farmacologia , Testículo/efeitos dos fármacos , Alumínio/sangue , Animais , Apoptose/efeitos dos fármacos , Caspase 3/genética , Masculino , Fator 2 Relacionado a NF-E2/genética , Estresse Oxidativo/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-bcl-2/genética , Ratos Wistar , Contagem de Espermatozoides , Motilidade dos Espermatozoides/efeitos dos fármacos , Espermatozoides/efeitos dos fármacos , Testículo/metabolismo , Testosterona/sangue , Fator de Necrose Tumoral alfa/sangue
13.
Mol Divers ; 25(2): 673-686, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-32067133

RESUMO

Nicotinic acid hydrazide was incorporated into new 4,5-dihydro-5-hydroxy-3,5-diphenylpyrazol-1-yl derivatives. Compounds 6a-h were synthesized, and their antihyperlipidemic activity was evaluated in high cholesterol diet-fed rat model. Compounds 6e, 6f were found to decrease the levels of serum total cholesterol by 14-19% compared to control group. Total triglycerides were also reduced by 24-28% and LDL cholesterol by 16%. As expected from parent niacin, compounds 6e and 6f caused an elevation of HDL cholesterol by 33-41%. Docking study supported the ability of designed compounds to block NPC1L1 active site in a manner similar to that observed with ezetimibe.


Assuntos
Hidrazinas/uso terapêutico , Hiperlipidemias/tratamento farmacológico , Hipolipemiantes/uso terapêutico , Ácidos Nicotínicos/uso terapêutico , Pirazóis/uso terapêutico , Animais , Colesterol/sangue , Desenho de Fármacos , Hidrazinas/química , Hiperlipidemias/sangue , Hipolipemiantes/química , Masculino , Proteínas de Membrana Transportadoras/química , Simulação de Acoplamento Molecular , Ácidos Nicotínicos/química , Pirazóis/química , Ratos Wistar , Triglicerídeos/sangue
14.
J Ayub Med Coll Abbottabad ; 32(3): 405-407, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32829560

RESUMO

Cleidocranial dysplasia is a rare autosomal dominant disorder of bones mainly affecting bones formed by intra-membranous and endochondral ossification. It presents clinically as brachycephalic skull, frontal bossing, depressed nasal bridge, hypertelorism, delayed closure of fontanelles, delayed eruption of permanent teeth, missing clavicles and wide pelvis. It runs in families; sporadic cases are rarer. Just over than 1000 cases have been reported. We are presenting here 2 cases of cleidocranial dysplasia in siblings.


Assuntos
Displasia Cleidocraniana , Doenças Dentárias , Criança , Clavícula/anormalidades , Feminino , Humanos , Masculino , Mandíbula/diagnóstico por imagem , Mandíbula/patologia , Dente/diagnóstico por imagem , Dente/patologia , Erupção Dentária
15.
Medicine (Baltimore) ; 99(8): e19261, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32080134

RESUMO

Barrett's esophagus has 0.5% to 7% risk of progression to esophageal adenocarcinoma. The method of obtaining biopsies to diagnose Barrett's is challenging. Seattle protocol has been considered as the gold standard, however its difficulty limits its applicability in practice. Narrow band imaging guided biopsy has been proposed as an alternative.To investigate the accuracy, sensitivity, specificity and applicability of Narrow band guided biopsy as a screening tool for Barret's esophagus in gastroesophageal reflux patients.Endoscopy was done in 2 different sessions 2 weeks apart for 100 patients in Alexandria, Egypt. Patients had at least one of the following: Chronic Gastroesophageal reflux disease, frequent Gastroesophageal reflux disease, or two or more risk factors for Barrett's esophagus. All patients with known Barrett's esophagus were excluded.Seventeen patients had Barrett's esophagus either by one of the two techniques or by both, 4 patients by both methods, 7 patients by narrow band imaging alone and 6 patients by Seattle protocol alone (P < .001, κ = 0.461). Sensitivity, specificity, negative predictive value and positive predictive value for Seattle protocol were 58.8%, 100%, 92.2%, 100% vs 76.5%, 100%, 95.4%, 100% respectively for narrow band imaging. A mean of 7.73 samples/patient was taken in Seattle protocol vs 3.42 samples in narrow band imaging (P < .001). A mean of 8.63 minutes was consumed in Seattle protocol vs 2.65 minutes in narrow band imaging (P < .001).Narrow band imaging guided biopsy might have higher accuracy, sensitivity and negative predictive value as well as fewer number of biopsies and shorter time of the procedure compared to Seattle protocol which might increases its applicability as screening protocol for Barrett's esophagus. However, further larger multicentric studies are needed.


Assuntos
Esôfago de Barrett/diagnóstico , Esofagoscopia , Esôfago/diagnóstico por imagem , Esôfago/patologia , Biópsia Guiada por Imagem , Imagem de Banda Estreita , Adolescente , Adulto , Idoso , Biópsia , Egito , Feminino , Refluxo Gastroesofágico/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Sensibilidade e Especificidade , Fatores de Tempo , Adulto Jovem
16.
Sci Rep ; 10(1): 1723, 2020 02 03.
Artigo em Inglês | MEDLINE | ID: mdl-32015354

RESUMO

There is growing interest in reconstructing phylogenies from the copious amounts of genome sequencing projects that target related viral, bacterial or eukaryotic organisms. To facilitate the construction of standardized and robust phylogenies for disparate types of projects, we have developed a complete bioinformatic workflow, with a web-based component to perform phylogenetic and molecular evolutionary (PhaME) analysis from sequencing reads, draft assemblies or completed genomes of closely related organisms. Furthermore, the ability to incorporate raw data, including some metagenomic samples containing a target organism (e.g. from clinical samples with suspected infectious agents), shows promise for the rapid phylogenetic characterization of organisms within complex samples without the need for prior assembly.


Assuntos
Burkholderia/genética , Ebolavirus/genética , Escherichia/genética , Sequenciamento de Nucleotídeos em Larga Escala/métodos , Saccharomyces/genética , Software , Algoritmos , Evolução Biológica , Mapeamento Cromossômico , Biologia Computacional , Conjuntos de Dados como Assunto , Evolução Molecular , Metagenoma , Filogenia , Validação de Programas de Computador
17.
Pol J Radiol ; 83: e482-e490, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30655928

RESUMO

PURPOSE: The purpose of this review is to illustrate and discuss the seldom used technique of three-dimensional (3D) saline infusion sonohysterography (SIS) based on instillation of sterile saline through a catheter into the uterus under real-time vaginal transducer observation for assessment of the endometrial cavity. MATERIAL AND METHODS: The cases for this pictorial review were selected from the imaging material collected at the Ultrasound Unit, Clinical Imaging Department, Women's Hospital of Hamad Medical Corporation during a seven-year period from 2011 to 2017. This was a retrospective collection of 216 consecutive cases that underwent two-dimensional (2D) and 3D SIS for evaluation of the uterine cavity, followed by verification of results with histopathology. An open-sided speculum is inserted into the vagina. An intrauterine catheter is then threaded into the endometrial cavity. After that, the speculum is removed carefully, and a vaginal transducer is inserted. Using a 60-ml syringe attached to the catheter, saline solution is instilled under direct real-time observation (2D SIS). Subsequently, reconstruction of the three-dimensional anatomy of the intrauterine cavity is performed. PICTORIAL REVIEW: The review presents the most common indication for SIS, like abnormal bleeding in pre- and postmenopausal patients. SIS allows us to distinguish between focal lesions and global endometrial thickening. SIS should be supported as a second-line diagnostic procedure for abnormal uterine bleeding, when findings from transvaginal ultrasound are inconclusive. CONCLUSIONS: The addition of 3D techniques to SIS procedure helps in the distinction between endometrial and myometrial lesions, also it facilitates delineation of uterine anatomy, resulting in more precise and accurate diagnosis.

18.
Nucleic Acids Res ; 45(1): 67-80, 2017 01 09.
Artigo em Inglês | MEDLINE | ID: mdl-27899609

RESUMO

Continued advancements in sequencing technologies have fueled the development of new sequencing applications and promise to flood current databases with raw data. A number of factors prevent the seamless and easy use of these data, including the breadth of project goals, the wide array of tools that individually perform fractions of any given analysis, the large number of associated software/hardware dependencies, and the detailed expertise required to perform these analyses. To address these issues, we have developed an intuitive web-based environment with a wide assortment of integrated and cutting-edge bioinformatics tools in pre-configured workflows. These workflows, coupled with the ease of use of the environment, provide even novice next-generation sequencing users with the ability to perform many complex analyses with only a few mouse clicks and, within the context of the same environment, to visualize and further interrogate their results. This bioinformatics platform is an initial attempt at Empowering the Development of Genomics Expertise (EDGE) in a wide range of applications for microbial research.


Assuntos
Bacillus anthracis/classificação , Biologia Computacional/métodos , Ebolavirus/classificação , Escherichia coli/classificação , Software , Yersinia pestis/classificação , Antraz/microbiologia , Bacillus anthracis/genética , Ebolavirus/genética , Escherichia coli/genética , Infecções por Escherichia coli/microbiologia , Doença pelo Vírus Ebola/virologia , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Internet , Filogenia , Peste/microbiologia , Yersinia pestis/genética
19.
Genome Announc ; 3(2)2015 Mar 19.
Artigo em Inglês | MEDLINE | ID: mdl-25792053

RESUMO

We report here the genome sequence of Thauera sp. strain SWB20, isolated from a Singaporean wastewater treatment facility using gel microdroplets (GMDs) and single-cell genomics (SCG). This approach provided a single clonal microcolony that was sufficient to obtain a 4.9-Mbp genome assembly of an ecologically relevant Thauera species.

20.
J Ayub Med Coll Abbottabad ; 27(4): 933-5, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-27004356

RESUMO

Gingival fibromatosis (GF) is a rare condition with an estimated incidence of 1750,000 in autosomal dominant cases and is supposedly genetic in origin. Gingival fibromatosis (GF) may occur as an isolated finding (Idiopathic gingival fibromatosis or IGF) or in combination with additional clinical problems that is, giving rise to syndromic forms of the disease. It usually is triggered when permanent dentition starts to erupt and can cover crowns of the teeth. Gingival fibromatosis occasionally manifests at birth or affect primary dentition. This enlargement may cause mal-position and diastema. Surgical excision of excessive fibrous tissue is the only treatment but it recurs. We are presenting here a case of 5 year old patient presenting with severe idiopathic gingival fibromatosis covering crowns of primary teeth and causing functional impairment.


Assuntos
Fibromatose Gengival/diagnóstico , Gengiva/patologia , Dente Decíduo/patologia , Pré-Escolar , Humanos , Hipertrofia , Masculino , Recidiva
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