Neuroendocrine neoplasms of the orbit: report of three cases and a literature review.

Neuroendocrine neoplasms (NENs) originate from neuroendocrine cells, and mainly occur in the gastrointestinal tract and lungs, rarely occurring in the orbit. Here, the clinicopathologic factors, treatments and prognosis of three cases of orbital NENs are described. The mean age of the three patients (two females and one male) was 59 years.

Erdheim-Chester disease with bilateral orbital masses and multi-systemic symptoms: two case reports.

Background: Erdheim-Chester disease (ECD) is a rare histiocytic disorder characterized by multisystem xanthogranulomatous infiltration by lipid-laden histiocytes. We report two cases of ECD involving the orbit and describe their clinicopathologic factors, treatments, and prognosis. One was a rare case of ECD complicated with primary thrombocytosis.

Hydrogen-Bond-Connected 2D Zn-LMOF with Fluorescent Sensing for Inorganic Pollutants and Nitro Aromatic Explosives in the Aqueous Phase.

Herein, a novel luminescent Zn-LMOF, ([Zn(PBBA)(HO)]·3DMF·2HO, PBBA = 4,4'-(2,6-pyrazinediyl)bis[benzoic acid], DMF = ,-dimethylformamide), was successfully synthesized under solvothermal conditions. Zinc ions are connected by PBBA ligands to form two-dimensional (2D) layers, and the layers are further propped up through hydrogen-bonding interactions. exhibits good sensitivity to inorganic pollutants, Fe and CrO, as well as nitro aromatic explosives, 2,4,6-trinitrophenol and 2,4-dinitrophenol.

Unique Fluorescence Turn-On and Turn-Off-On Responses to Acids by a Carbazole-Based Metal-Organic Framework and Theoretical Studies.

Distinct from predominately known fluorescence quenching (turn-off) detection, turn-on response to hazardous substances by luminescent metal-organic frameworks (LMOFs) could greatly avoid signal loss and susceptibility to environmental stimulus. However, such detection rarely occurs and lacks theoretical elucidations. Here, we present the first example of unique turn-on and unprecedented turn-off-on responses to a variety of acids by a stable 12-connected hexanuclear Y(III)-cluster-based LMOF material─, featuring the nondefault topology.

A Stable Y(III)-Based Amide-Functionalized Metal-Organic Framework for Propane/Methane Separation and Knoevenagel Condensation.

Here, a Y(III)-based metal-organic framework, {[Y(μ-O)(μ-OH)(HO)(BTCTBA)]·2[(CH)NH]·5DMF·CHCl·4HO}, has been successfully synthesized under solvothermal conditions. was constructed with amide-functionalized tricarboxylate ligands and Y(III)-based infinite chains, where the Y repeating units are arranged in a order. The overall framework could be viewed as a novel (3,5)-connected net with two types of channels along the [100] and [010] directions.

Structural Regulation and Light Hydrocarbon Adsorption/Separation of Three Zirconium-Organic Frameworks Based on Different V-Shaped Ligands.

On the basis of different V-shaped ligands, three zirconium-organic frameworks (, , and ) have been successfully constructed. By regulating spatial configuration and functional groups of organic ligands, these as-synthesized Zr-MOFs (MOF = metal-organic framework) display distinct structures and different light hydrocarbon adsorption/separation capabilities. , with a double-walled interpenetrated 3D primitive cubic (pcu) framework, exhibits good gas-adsorption capacity but not prominent selective separation ability.