Publications by authors named "Etit D"

The impact-intensive and rapidly growing pharmaceutical industry must ensure its sustainability. This study reveals that environmental sustainability assessments have been conducted for only around 0.2% of pharmaceuticals, environmental impacts have significant variations among the assessed products, and different impact categories have not been consistently studied.

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This work demonstrates an additive and hydrogen-free 2-step lignin-first fractionation in flow-through. First, solvolytic delignification renders lignin liquors with its native chemical structure largely intact; and second, ß-zeolite catalytic depolymerization of these liquors leads to similar monomer yields as the corresponding 1-step fractionation process. Higher delignification temperatures lead to slightly lower ß-O-4 content in the solvated lignin, but does not affect significantly the monomer yield, so a higher temperature was overall preferred as it promotes faster delignification.

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Microbial refactoring offers sustainable production of plant-sourced pharmaceuticals associated with high production costs, ecological harms, and supply chain dependencies. Here, microbial tabersonine production in Saccharomyces cerevisiae is modeled during early-stage development (TRL: 3-5), guiding decisions for process-scale economic and environmental optimization. The base-case 0.

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The prognostic significance of tumor volume (TV) in laryngeal squamous cell cancer (LSCC) has been demonstrated previously. Still, its clinical use is uncertain, and a method for accurate staging for TV is lacking. This study aimed to develop an objective staging and determine the effect of tumor volume on disease outcome after surgical treatment for LSCC.

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Objective: The aim of this study is to categorize the risk groups of patients with oropharyngeal carcinoma (OPC) according to p16 and p53 status, smoking/alcohol consumption history, and other prognostic factors.

Study Design: The immunostaining of p16 and p53 of 290 patients was retrospectively evaluated. The history of smoking/alcohol consumption of each patient was noted.

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Background/aim: Paget’s disease (PD) of the breast is a very rare presentation of breast malignancy, accounting for 1%–3% of all primary breast tumors. We aimed to evaluate and compare the clinicopathological features and clinical outcome of PD accompanied by in situ carcinoma and invasive cancer.

Materials And Methods: We used the archive of our pathology laboratory retrospectively for age, sex, history of surgery, histopathological findings, treatment modalities, and follow-up information.

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Invasive cribriform carcinoma (ICC) is a rare type of a primary breast carcinoma. It is subdivided into two groups as pure and mixed types. There are limited studies comparing the pure and mixed ICC at present.

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In the present work, a hydrogen-free one-step catalytic fractionation of woody biomass using commercial β-zeolite as catalyst in a flow-through reactor was carried out. Birch, spruce, and walnut shells were compared as lignocellulosic feedstocks. β-Zeolite acted as a bifunctional catalyst, preventing lignin repolymerization due to its size-selective properties and also cleaving β-O-4 lignin intralinkages while stabilizing reactive intermediates.

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Background And Aim: In medical practice the classification of breast cancer is most commonly based on the molecular subtypes, in order to predict the disease prognosis, avoid over-treatment, and provide individualized cancer management. Tumor size is a major determiner of treatment planning, acting on the decision-making process, whether to perform breast surgery or administer neoadjuvant chemotherapy. Imaging methods play a key role in determining the tumor size in breast cancers at the time of the diagnosis.

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Objective: The COL6A1 is a gene encoding the alpha 1 polypeptide subunit of collagen 6 (COL6A1), an extracellular matrix protein subunit. Programmed cell death receptor-1 (PD-1) and its ligand, programmed cell death receptor ligand-1 (PD-L1) have been shown to have a prognostic significance in clear cell renal cell carcinomas (RCCs). In this study, we evaluated the expressions of COL6A1 and PD-1 in four different RCC subtypes.

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Objective: Basal markers [cytokeratin 5/6 (CK5/6) and epidermal growth factor receptor (EGFR)] are used in identifying the basal-like breast carcinoma subtype, which is associated with a poor prognosis. However, the clinicopathological significance in early-stage invasive carcinoma of no special type (IC, NST) has not been well established.

Material And Method: In a five-year period, 133 female patients with early-stage IC, NST with a median follow-up time of 89 months were included.

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Objective: Adenoid cystic carcinoma (ACC) of the breast is an uncommon salivary type of breast carcinoma. It is a triple negative breast carcinoma with a basal-like phenotype that behaves in an indolent manner. Herein, we aimed to document clinicopathologic findings and hormone receptor status of ACC in the breast diagnosed in our institution during an eleven-year period.

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Introduction: Hydatid disease is an endemic parasitic infection caused by Echinococcus granulosus mostly seen in the Mediterranean countries. The most affected organ is the liver, however hydatidosis can be found anywhere in the human body.

Methods: The records of patients who were diagnosed with hydatid disease in our hospital from December 2005 to February 2016 were analyzed retrospectively.

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Spindle epithelial tumor with thymus-like element (SETTLE) is a very rare malignant neoplasm of the thyroid. It is generally encountered in children, adolescents, and young adults Objective: We aimed to present a patient with SETTLE and to review the clinical and pathologic features of this rare tumor. A 13-year-old male patient presented to our clinic with complaints of a rapidly growing lump on his neck.

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Background: Extra-gastrointestinal stromal tumor is defined as a mesenchymal neoplasm arising from soft tissues outside the gastrointestinal tract. Prostatic extra-gastrointestinal stromal tumor has rarely been noted.

Case Report: A 56 year-old man presented with pain in the anal region.

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Background: Idiopathic granulomatous mastitis (IGM) is an uncommon benign chronic inflammatory breast disease, and erythema nodosum (EN) is an extremely rare systemic manifestation of IGM. Here, we report a rare case of IGM accompanied by EN.

Case Report: A 32-year-old patient was admitted to our clinic with a history of a tender mass in the right breast.

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The objective of this study was to determine the incidence of thyroid gland invasion in laryngeal and hypopharyngeal squamous cell carcinoma; and the association between clinicopathological parameters and thyroid gland invasion. Medical records of 75 patients with laryngeal and hypopharyngeal squamous cell carcinoma who underwent total laryngectomy with thyroidectomy were reviewed, retrospectively. Preoperative computed tomography scans, clinical and operative findings, and histopathological data of the specimens were evaluated.

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Acute gastrointestinal hemorrhage is frequently seen in emergency surgical conditions. Benign pathologies are generally responsible in etiologic factors. Our case is a GANT.

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Inflammatory infiltration with eosinophilia in or around the tumoral tissue varies among the cases with invasive squamous cell carcinoma of the larynx. The aim of this study was to investigate the possible role of the tumor-associated tissue eosinophilia (TATE) as a predictive factor for the metastatic status in laryngeal squamous cell carcinoma in patients who had neck dissections. One hundred consecutive specimens from the patients who had been treated surgically for invasive squamous cell carcinoma of the larynx were re-evaluated in terms of TATE.

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Laryngeal paragangliomas are rare neoplasms that originate in the neural crest cells of the laryngeal paraganglia. Although the vast majority of these tumors are benign, they exhibit different types of biologic behavior that require different treatment modalities. Therefore, differentiation among these tumors is extremely important.

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Objectives: This study aims to compare histopathological results of conventional surgery and transoral radiofrequency ablation in patients with early stage laryngeal carcinoma.

Patients And Methods: Between January 2006 and May 2010, 36 patients (34 males, 2 females; mean age 61.6 years; range 43 to 77 years) who underwent partial laryngectomy in our clinic were retrospectively analyzed.

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Endosalpingiosis is a disorder of the Mullerian system characterized by benign glands lined with tubal type epithelium and involves the peritoneum, subperitoneal tissues and retroperitoneal lymph nodes. Myometrial endosalpingiosis is very rare. A 44-year-old female presented to the hospital complaining of menorrhagia.

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Objective: To assess the discrepancies that prevailed among the members of the Head and Neck Pathology Working Group in Turkey in diagnosing salivary gland tumors, classified primarily according to myoepithelial origin, by utilizing telepathology.

Study Design: At least 4 representative images were obtained from each case of a total of 47 salivary gland tumors, and these were studied by 14 participants. The tumors examined were classified into 2 categories under behavior as malignant or benign, and also grouped into 2 categories under differentiation: those showing and those not showing myoepithelial differentiation.

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Polymorphous low-grade adenocarcinoma is a malignant epithelial tumour with low metastatic rate and infiltrative growth pattern. The palate is the most common site. Paranasal sinuses are uncommon venues for polymorphous low-grade adenocarcinoma.

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