4,251 results match your criteria: "Firat university[Affiliation]"

Secondary metabolites obtained from plants are among the most commonly encountered chemotherapeutics used in cancer treatment. Plants contain thousands of metabolites; therefore, it is important to reach the compound primarily responsible for activity by fractionating plant extracts through activity-guided isolation. The cytotoxic activities of C.

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Objective: Fractalkine (CX3CL1) and macrophage inflammatory protein-1β (MIP-1β)/CCL4 play a role in chemotactic activity, immune response, and inflammatory response. We aimed to investigate the effects of fractalkine and MIP-1β in the development of ovarian hyperstimulation syndrome (OHSS) by considering the inflammatory response during ovulation.

Materials And Methods: Two equal groups of 20 immature female rats were created.

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Alcohol fuels with different carbon numbers such as propanol (C3), butanol (C4) and pentanol (C5) have lately become popular in both conventionally and RCCI-operated diesel engines thanks to their high cetane number (CN) and oxygen content along with lower latent heat of evaporation, which are useful for reducing the high CO/HC emissions, whereas RCCI mode still suffers from these emissions. Therefore, in this study, these three alcohol fuels with carbon numbers ranging from C3 to C5 were employed as low-reactivity fuel (LRF) in a single-cylinder RCCI engine under a constant engine speed of 2400 rpm and varying loadings (from 20 to 60% of full load at 20% intervals) and premixed ratios (from 0 to 60% with 15% intervals) when using B7 as high-reactivity fuel (HRF). In the experimental study, the effect of oxygen content, latent heat of evaporation, and cetane number which changes linearly with the carbon number of alcohols used, on exhaust emissions, were analyzed.

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Objectives: To determine the effects of hyperandrogenemia and other phenotypic parameters on endometrial vitamin D receptor (VDR-X2 and VDR-X4) expression in women with polycystic ovary syndrome (PCOS) undergoing ovarian stimulation and total embryo freezing.

Methods: Forty-four PCOS patients were divided into four phenotypes according to the criteria for hyperandrogenemia (HA), ovulatory dysfunction (OD), and polycystic ovary morphology (PCOM): phenotype A (HA+OD+PCOM), phenotype B (HA+OD), phenotype C (HA+PCOM), and phenotype D (OD+PCOM). Endometrial VDR expression was determined by real-time PCR and immunohistochemistry.

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Article Synopsis
  • Lung cancer is a significant issue for patients with Idiopathic Pulmonary Fibrosis (IPF), but there is limited research on those with non-IPF Pulmonary Fibrosis (PF); this study compares the two groups in terms of characteristics and survival.
  • The study analyzed data from 251 patients diagnosed with lung cancer between 2010 and 2022, finding that most were elderly men with a high smoking rate, and differing patterns of lung imaging between the two groups.
  • Both IPF-LC and non-IPF PF-LC patients had high 5-year mortality rates around 64%, with the shortest survival noted in non-IPF PF patients with unclassified PF.
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Objective: Cyclin D1 (CDDN1) is an important protein for mitotic cell cycle advancement through the G1 phase and contributes to the control of the cyclin-dependent kinases CDK4 and CDK6. We evaluated the relationship between CDDN1 expression and clinicopathological features in prostate cancer (PCa) cases and whether CDDN1 could be used as a prognostic biomarker for PCa cases in this study.

Methods: This study comprised ninety cases; seventy-five had PCa and fifteen had benign prostatic hypertrophy (BPH) diagnoses (as the control group).

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Background: The lifelong and intensive treatment and care process of Spinal Muscular Atrophy may cause a decrease in the life quality of the child and the parents. This study aims to examine the emotions of parents who have a child with Spinal Muscular Atrophy within the framework of a phenomenological design.

Methods: This study was conducted with a phenomenological design.

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Objective: Colorectal cancer (CRC) is a type of digestive system cancer. At the molecular level, some factors, including genetic and epigenetic factors, as well as various signaling pathways such as oxidative stress and inflammation, play an active role in the onset of CRC. Genetic and epigenetic mutations, particularly in oncogenes and tumor suppressor genes, occur during colorectal adenocarcinoma development as a result of a change in gastrointestinal epithelial cell proliferation and self-renewal rates.

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Maximum Power Point Tracking (MPPT) algorithms are crucial for maximizing power extraction from photovoltaic (PV) systems. Traditional MPPT methods often exhibit suboptimal performance under partial shading conditions. Hence, advanced MPPT algorithms have been developed to enhance efficiency in such scenarios.

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Hydatid disease: imaging, treatment, and beyond.

Clin Radiol

January 2025

Istanbul University Faculty of Medicine, Department of Radiology, Istanbul, Turkey. Electronic address:

Hydatidosis is an endemic parasitic disease that can occur in almost any part of the body. It presents in two different forms according to the type of tapeworm: Echinococcus granulosus (hydatid disease [HD]) and Echinococcus multilocularis (alveolar HD). Radiological imaging can reveal the type of cyst, disease activity and progression, and complications, with features depending on the HD stage, the organ involved, and complications.

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Electrochemical Drilling (ECD) is an unconventional method aimed at creating holes in metallic workpieces characterized by high hardness and complex structures. This study analyzes the influence of process variables, including machining voltage, electrolyte concentration, electrode rotational speed, electrolyte flushing pressure, and workpiece material, on the novel hole performance index (HPI) in electrical discharge machining (ECD). The HPI was identified as a suitable metric for simultaneously evaluating hole geometry and drilling time across various machining parameters and workpiece materials.

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Clinical Management Strategies of Cardiologists in Heart Failure with Reduced Ejection Fraction in Türkiye.

Turk Kardiyol Dern Ars

December 2024

Department of Cardiology, Izmir University of Economics, Faculty of Medicine, Medical Point Hospital, Izmir, Türkiye.

Objective: Integrating heart failure (HF) guideline recommendations into clinical practice takes time and is often suboptimal in real-life settings. Physician-related factors may be significant barriers to the adoption of these guidelines. This survey aims to assess the current opinions of cardiologists practicing in Türkiye regarding the management of heart failure with reduced ejection fraction (HFrEF).

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Objective: In the current study, we aimed to ascertain the levels of heavy metals and radioactive elements in the ovarian follicular fluids of pregnant and non-pregnant Kyrgyz mares.

Materials And Methods: To this end, follicular fluids were obtained from 49 Kyrgyz mares aged 3-5 years. The mares were in various stages of pregnancy (Group 1, 27) or were non-pregnant (Group 2, 22).

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Kisspeptins are reported to be the most potent activators of the hypothalamus-pituitary-gonadal (HPG) axis known to date. Kisspeptin potently elicits gonadotropin-releasing hormone (GnRH) release and luteinizing hormone (LH) secretion, even in the pre-pubertal period. Beyond the hypothalamus, kisspeptin is also expressed in limbic and paralimbic brain regions, which are areas of the neurobiological network primarily implicated in emotional behaviors alongside sexual functions.

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A Novel Hybrid Model for Automatic Non-Small Cell Lung Cancer Classification Using Histopathological Images.

Diagnostics (Basel)

November 2024

School of Mathematics, Physics, and Computing, University of Southern Queensland, Springfield, Ipswich, QLD 4300, Australia.

: Despite recent advances in research, cancer remains a significant public health concern and a leading cause of death. Among all cancer types, lung cancer is the most common cause of cancer-related deaths, with most cases linked to non-small cell lung cancer (NSCLC). Accurate classification of NSCLC subtypes is essential for developing treatment strategies.

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This study sets out to develop a psycho-social model for assessing the effectiveness of spiritually oriented logotherapy for earthquake victims with PTSD following the 6 February 2023, Kahramanmaraş earthquake in Turkey. The findings of this study will undoubtedly contribute to the development of post-disaster spiritual support services. We developed and implemented a six-week "Psycho-Social Training Programme through Spiritually Oriented Meaning" in the cities of Malatya, Elazığ and Kahramanmaraş, which were significantly affected by the earthquake.

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Article Synopsis
  • The study investigates male perceptions of women's smoking and hookah use, involving 716 male participants with an average age of 34.93 years.
  • Significant correlations were found between male respondents' social gender perceptions and various factors like age and marital status, indicating a negative view of women who smoke or use hookah, with implications on their perceived ability to bear healthy children.
  • Overall, men associated women's smoking behaviors with non-conformity to social norms and primarily cited social factors as motivations for negative perceptions rather than health concerns.
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  • Cholelithiasis is a common inflammatory condition of the gallbladder, influenced by factors like obesity and appetite regulation, which are linked to leptin and melanocortin pathways.
  • The study aimed to explore the relationship between various proteins associated with appetite and energy balance—specifically LEP, LEPR, TrkB, BDNF, POMC, and MC4R—in patients with cholelithiasis.
  • Results showed significant decreases in MC4R, TrkB, BDNF, and POMC levels in patients compared to healthy controls, but no significant differences in LEP and LEPR levels were found between the two groups.
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Background: The prevalence of smartphone usage is steadily rising, leading to the potential development of addiction due to problematic use. This study examined the relationship between smartphone addiction, self-perceived attention deficit and hyperactivity symptoms, and sleep quality among 443 university students at Bingöl University.

Methods: Participants completed several questionnaires, including the Smartphone Addiction Scale-Short Version, the Pittsburgh Sleep Quality Index, and the Adult ADHD Self-Report Scale.

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Objectives: Clozapine is an atypical antipsychotic crucial for treatment-resistant schizophrenia, characterised by its multi-receptor targeting, including serotonin (5-HT2A, 5-HT2C) and dopamine (D1, D2, D3, D4) receptors, among others. This broad mechanism is effective against positive symptoms of schizophrenia with a lower incidence of extrapyramidal side effects. However, clozapine poses significant haematological risks, notably agranulocytosis, necessitating stringent blood monitoring protocols.

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The objective of this study was to examine the impact of freeze-thawing on the levels of oxidative stress, fatty acids, vitamins A, D, E, and K, cholesterol, and amino acids, as well as on spermatological parameters, in ram semen. Semen was collected and pooled from each of the seven rams twice a week for three weeks. The mixed semen was diluted with tris + egg yolk diluent at 38 °C (Group 38 °C) and the temperature was reduced to 5 °C (Group 5 °C).

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Article Synopsis
  • The study focuses on identifying critical patients in emergency departments to promptly reduce high mortality rates by evaluating specific clinical parameters.
  • It analyzes key indicators like the Glasgow Coma Scale (GCS), quick Sepsis-related Organ Failure Assessment (qSOFA), blood gas base excess (BE), and lactate levels in predicting mortality in critically ill patients.
  • Results showed that among 868 patients, GCS, qSOFA, and lactate levels effectively predicted 30-day mortality, with qSOFA proving to be the most accurate model at a threshold of ≥1.
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  • - This paper introduces a new framework for detecting Alzheimer's disease (AD) by analyzing EEG signals, utilizing a unique Lattice123 pattern inspired by the Shannon information entropy theorem for feature extraction.
  • - By generating directed graphs and using kernel functions, the model creates six feature vectors for each EEG signal, applying multilevel discrete wavelet transform (MDWT) to capture detailed features in both frequency and spatial domains.
  • - The model achieves over 98% classification accuracy and over 96% geometric mean, demonstrating its effectiveness in identifying subtle EEG signal changes related to AD, and is ready for validation with larger datasets.
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Electroencephalography (EEG) signals provide information about the brain activities, this study bridges neuroscience and machine learning by introducing an astronomy-inspired feature extraction model. In this work, we developed a novel feature extraction function, black-white hole pattern (BWHPat) which dynamically selects the most suitable pattern from 14 options. We developed BWHPat in a four-phase feature engineering model, involving multileveled feature extraction, feature selection, classification, and cortex map generation.

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