Small Intestine Gastrointestinal Clear Cell Sarcoma: A Case Report and Review of the Literature.

Gastrointestinal clear cell sarcoma (GICCS)/malignant gastrointestinal neuroectodermal tumor (GNET) is an extremely rare form of cancer with aggressive clinical behavior. It has distinct pathological, immunohistochemical, ultrastructural, and molecular features. Herein, we present the case of a 20-year-old woman with no notable medical history who presented to the outpatient department with complaints of abdominal pain and vomiting.

Incomplete common mesentery with Ladd's band and Meckel's diverticulum: A rare cause of small bowel obstruction.

Introduction And Importance: The common mesentery is an abnormal rotation of the primitive intestinal loop or omphalomesenteric loop. It is not necessarily symptomatic, but a clinical presentation of acute bowel obstruction on the band or volvulus can reveal it. We report a case of small bowel obstruction due to Ladd's band and Meckel's diverticulum on the incomplete common mesentery.

Upper gastrointestinal haemorrhage caused by duodenal metastasis from primary lung cancer: A case report.

Duodenal metastases from primary lung carcinoma are uncommon. They usually occur in terminal-stage disease. Bleeding, as the first presentation of duodenal metastases, is rare.

Biological and Mechanical Properties of Denture Base Material as a Vehicle for Novel Hydroxyapatite Nanoparticles Loaded with Drug.

This study aimed to evaluate the biological and mechanical properties of the poly(methyl methacrylate) (PMMA) denture base material as a vehicle incorporating novel hydroxyapatite nanoparticles (HA-NP) loaded with metronidazole (MZ) drug. HA-NP was prepared via wet-chemical-method, characterized by XRD, SEM/EDX, TEM, Fourier-transform infrared spectroscopy (FTIR), as well as the measurement of surface area and pore-size distribution. Four drug delivery formulas were prepared in the form of discs (10 x 2 mm) as follows: F1 (MZ/ HA-NP/PMMA), F2 (HA-NP/ PMMA), F3 (control-PMMA) and F4 (MZ/PMMA).

In situ synthesis of FeO nanoparticles coated by chito-oligosaccharides: physico-chemical characterizations and cytotoxicity evaluation for biomedical applications.

FeO nanoparticles coated with chito-oligosaccharides (COS) were prepared in situ by a simple co-precipitation method through a mixing of iron ions (Fe and Fe) and COS aqueous solutions followed by precipitation with ammonia. The impact of COS with different degree of polymerization (DP 10, 24 and 45) and degree of N-acetylation (DA) ∼ 24% and 50% (exhibiting high solubility) on the synthesis and physical properties of the coated magnetic nanoparticles was evaluated. Several advantages were found when the magnetic nanoparticles were prepared in the presence of the studied COS, such as: preparation of functionalized magnetic nanoparticles with narrower size distributions and, consequently, higher saturation magnetization (an increase of up to 22%); and an expressive increasing in the concentration of COS-coated magnetic nanoparticles (up to twice) in the cell viability test in comparison with pure FeO nanoparticles.

Reducing-end "clickable" functionalizations of chitosan oligomers for the synthesis of chitosan-based diblock copolymers.

Chitooligosaccharides (COS) produced by nitrous acid depolymerization of chitosan are unique chitosan oligomers due to the presence of the 2,5-anhydro-d-mannofuranose (amf) unit at their reducing end. In this work, we focused on the reductive amination and the oximation of the amf aldehyde group towards various functionalized anilines, hydrazides and O-hydroxylamines. The aim of this work was to synthesize new COS-based building blocks functionalized at their reducing end by different "clickable" chemical groups such as alkene, alkyne, azide, hydrazide and thiol.

Effect of Denture Base Reinforcement Using Light Cured E- Glass Fibers on the Level of Salivary Immunoglobulin A.

Background: A gap still exists between in vitro and clinical studies concerning the biocompatibility of the material in the oral environment and their potential to cause immunological undesirable side effects. The uses of glass fibres to improve the mechanical properties of acrylic resin denture base polymers are well documented in vitro.

Aim: The present study aimed to evaluate the effect of denture base reinforcement using light-cured E- glass fibres mesh on the level of salivary immunoglobulin A (S-IgA) in patients wearing complete dentures.

Reinforcing Mucus Barrier Properties with Low Molar Mass Chitosans.

The mucus gel covers the wet epithelia that forms the inner lining of the body. It constitutes our first line of defense protecting the body from infections and other deleterious molecules. Failure of the mucus barrier can lead to the inflammation of the mucosa such as in inflammatory bowel diseases.

Microbiological Assessment of Extracts and Its Incorporation in Novel Dental Remedies against Some Oral Pathogens.

Aim: To assess the antibacterial and antifungal potentials of different parts of plant using different extraction methods in attempts to formulate natural dental remedies from this plant.

Material And Methods: Three solvents extracts (Ethanol, acetone, and ethyl acetate) of different parts of Egyptian Moringa tree were prepared and tested against oral pathogens: , , and using disc diffusion method; As well as to incorporate the plant extract to formulate experimental toothpaste and mouthwash. The two dental remedies were assessed against the same microbial strains.

A Comparative Clinical Study of the Effect of Denture Cleansing on the Surface Roughness and Hardness of Two Denture Base Materials.

Aim: This study aimed to verify the influence of oral environment and denture cleansers on the surface roughness and hardness of two different denture base materials.

Methods: A total of sixteen identical removable disc specimens (RDS) were processed. Eight RDS were made from heat-cured acrylic resin (AR) and the other eight were fabricated from thermoplastic injection moulded resin (TR).