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Appendicitis AND cancer

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https://www.readbyqxmd.com/read/29309777/endoscopic-mucosal-resection-of-laterally-spreading-lesions-around-or-involving-the-appendiceal-orifice-technique-risk-factors-for-failure-and-outcomes-of-a-tertiary-referral-cohort-with-video
#1
David J Tate, Lobke Desomer, Halim Awadie, Kathleen Goodrick, Luke Hourigan, Rajvinder Singh, Stephen J Williams, Michael J Bourke
BACKGROUND AND AIMS: Endoscopic mucosal resection (EMR) of peri-appendiceal sessile laterally spreading lesions (PA-LSLs) is technically demanding due to poor endoscopic access to the appendiceal lumen and the thin colonic wall at the base of the cecum. We aimed to assess the feasibility and safety of EMR for PA-LSLs. METHODS: Consecutive LSLs ≥20 mm and PA-LSLs ≥10 mm detected at 3 academic endoscopy centers from September 2008 until January 2017 were eligible...
January 5, 2018: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29302967/self-assembled-coumarin-nanoparticle-in-aqueous-solution-as-selective-mitochondrial-targeting-drug-delivery-system
#2
Ji Ha Lee, Ka Young Kim, Hanyong Jin, Yeong Eun Baek, Yeonweon Choi, Sung Ho Jung, Shim Sung Lee, Jeehyeon Bae, Jong Hwa Jung
The development of specifically targeted nanoparticles for subcellular organelles modified with a low-molecular-weight organic compound as drug nanocarriers can bring about wide applications in cancer therapy. However, their utility has been hampered by low selectivity, poor biodistribution, and limited efficiency. Herein, we report the aggregation behavior of a triphenyl phosphonium-appended coumarin probe (TPP-C) in aqueous solution and its applications as a mitochondria-targeting probe, and drug delivery carrier, which is a rare example for a low molecular-weight organic compound...
January 5, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29301309/biotinylated-cyclooligosaccharides-for-paclitaxel-solubilization
#3
Eunae Cho, Seunho Jung
The poor water solubility of paclitaxel causes significant problems in producing cancer therapeutic formulations. Here, we aimed to solubilize paclitaxel using biocompatible cyclic carbohydrates. Generally recognized as safe, labeled β-cyclodextrin (β-CD), a cyclic α-1,4-glucan consisting of seven glucoses, was prepared, and bio-sourced cyclosophoraoses (CyS), which are unbranched cyclic β-1,2-glucans with 17-23 glucose units, were purified using various chromatographic methods from Rhizobium leguminosarum cultural broth...
January 2, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29250622/targeted-photodynamic-therapy-in-visible-light-using-bodipy-appended-copper-ii-complexes-of-a-vitamin-b6-schiff-base
#4
Nandini Mukherjee, Santosh Podder, Koushambi Mitra, Shamik Majumdar, Dipankar Nandi, Akhil R Chakravarty
Copper(ii) complexes [Cu(L1/L2/L3)(A)] (1-3), where H2A·HCl is a vitamin B6 Schiff base, viz. 3-hydroxy-5-(hydroxymethyl)-4-(((2-hydroxyphenyl)imino)methyl)-2-methylpyridin-1-ium chloride, L1 and L2 are 2-(2-pyridyl)benzimidazole based borondipyrromethene (BODIPY) ligands and L3 is 2-(2-pyridyl)benzimidazole, were prepared, characterized and their visible light-induced anti-cancer activity was studied. Complex 3, characterized by X-ray crystallography, exhibits a distorted square-pyramidal geometry for copper (τ = 0...
December 18, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29222969/copper-ii-complexes-of-n3o-tripodal-ligands-appended-with-pyrene-and-polyamine-groups-anti-proliferative-and-nuclease-activities
#5
Doti Serre, Sule Erbek, Nathalie Berthet, Xavier Ronot, Véronique Martel-Frachet, Fabrice Thomas
A series of tripodal ligands based on the 2-tert-butyl-4-R-6-phenol was synthesized, where R=aldehyde (HL1), R=putrescine-pyrene (HL2) and R=putrescine (HL3). A dinucleating ligand wherein a putrescine group connects two tripodal moieties was also prepared (H2L4). The corresponding copper complexes (1, 2, 3, and 4, respectively) were prepared and characterized. We determined the phenol's pKas in the range 2.47-3.93. The DNA binding constants were determined at 6×106, 5.5×105 and 2.7×106 for 2, 3 and 4, respectively...
November 11, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29181687/mir-542-3p-appended-sorafenib-all-trans-retinoic-acid-atra-loaded-lipid-nanoparticles-to-enhance-the-anticancer-efficacy-in-gastric-cancers
#6
Tong Li, Yu Zhang, Yuan-Pu Meng, Li-Shan Bo, Wen-Bo Ke
PURPOSE: In this study, miR-542-3p appended SRF/ATRA-loaded solid lipid nanoparticle was successfully prepared and demonstrated for its therapeutic efficacy against gastric cancers. METHODS: The particles were nanosized and typically spherical in shape. In vitro release study showed that release of ATRA was significantly slower compared to that of SRF from the NPs. RESULTS: MTT assay showed that miR-542-3p have a strong inhibitory effect on the proliferation of MGC-803 cancer cells in a typical dose dependent manner...
November 27, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/29138382/-a-case-of-retroperitoneal-abscess-due-to-acute-appendicitis-during-neo-adjuvant-chemotherapy-for-breast-cancer
#7
Takaaki Oba, Kazuma Maeno, Kenichi Ito, Satoshi Ishizone, Takaomi Hanaoka
When acute appendicitis occurs in patients treated with chemotherapy, neutropenia and abdominal complaints caused by chemotherapy can contribute to the diagnostic difficulty, masking the increase in white blood cell(WBC)counts and physical findings of acute appendicitis. A 43-year-old premenopausal woman who was diagnosed with stage IIIA left breast cancer was scheduled for neoadjuvant chemotherapy includingfluorouracil plus epirubicin plus cyclophosphamide(FEC), followed by docetaxel and trastuzumab(DOC plus HER)...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28988021/two-concurrent-appendiceal-neoplasms-in-an-elderly-patient-a-case-report
#8
Riva Das, Joshua P Cantor, Thai Q Vu
INTRODUCTION: Acute appendicitis, one of the commonest surgical diagnoses, is rare and more complex presentation in the elderly. Physicians must consider atypical causes appendicitis in this population, which could affect the management of the patient. PRESENTATION OF CASE: An elderly female presented with a two-day history of lower abdominal pain, associated with low-grade fevers and chills. Studies showed leukocytosis and computed tomography (CT) findings consistent with appendicitis...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28976754/synthesis-and-bioevaluation-of-macrocycle-polyamine-conjugates-as-cell-migration-inhibitors
#9
Kristen Skruber, Kelvin J Chaplin, Otto Phanstiel
The motuporamines are natural products isolated from the New Guinea sea sponge Xestospongia exigua. Dihydromotuporamine C contains a large macrocycle and an appended polyamine component and was shown to be both antimetastatic and cytotoxic to human L3.6pl pancreatic cancer cells. A series of macrocycle-polyamine conjugates were prepared, and the sequence of the polyamine component was varied to optimize the antimigration properties (as measured in L3.6pl cells) of this molecular class. A one-carbon spacer between the 15-membered carbocycle and the appended polyamine showed improved antimigration properties...
October 4, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28956596/anticancer-activity-of-iridium-iii-complexes-based-on-a-pyrazole-appended-quinoline-based-bodipy
#10
Rajendra Prasad Paitandi, Sujay Mukhopadhyay, Roop Shikha Singh, Vinay Sharma, Shaikh M Mobin, Daya Shankar Pandey
A pyrazole-appended quinoline-based 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (L1, BODIPY) has been synthesized and used as a ligand for the preparation of iridium(III) complexes [Ir(phpy)2(L1)]PF6 (1; phpy = 2-phenylpyridine) and [(η(5)-C5Me5)Ir(L1)Cl]PF6 (2). The ligand L1 and complexes 1 and 2 have been meticulously characterized by elemental analyses and spectral studies (IR, electrospray ionization mass spectrometry, (1)H and (13)C NMR, UV/vis, fluorescence) and their structures explicitly authenticated by single-crystal X-ray analyses...
September 28, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28954820/cannabidiol-and-palmitoylethanolamide-are-anti-inflammatory-in-the-acutely-inflamed-human-colon
#11
Daniel G Couch, Chris Tasker, Elena Theophilidou, Jonathan N Lund, Saoirse E O'Sullivan
OBJECTIVE: We sought to quantify the anti-inflammatory effects of two cannabinoid drugs, cannabidiol (CBD) and palmitoylethanolamide (PEA), in cultured cell lines and compared this effect with experimentally inflamed explant human colonic tissue. These effects were explored in acutely and chronically inflamed colon, using inflammatory bowel disease and appendicitis explants. DESIGN: Caco-2 cells and human colonic explants collected from elective bowel cancer, inflammatory bowel disease (IBD) or acute appendicitis resections, and were treated with the following drug treatments: vehicle, an inflammatory protocol of interferon γ (IFNγ) and tumour necrosis factor α (TNFα; 10 ng/ml), inflammation and PEA (10 µM), inflammation and CBD (10 µM), and PEA or CBD alone, CBD or vehicle were added simultaneously with IFNγ...
November 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28942236/increased-incidence-of-bowel-cancer-after-non-surgical-treatment-of-appendicitis
#12
Malin Enblad, Helgi Birgisson, Anders Ekbom, Fredrik Sandin, Wilhelm Graf
BACKGROUND: There is an ongoing debate on the use of antibiotics instead of appendectomy for treating appendicitis but diagnostic difficulties and longstanding inflammation might lead to increased incidence of bowel cancer in these patients. The aim of this population-based study was to investigate the incidence of bowel cancer after non-surgical treatment of appendicitis. PATIENTS AND METHODS: Patients diagnosed with appendicitis but lacking the surgical procedure code for appendix removal were retrieved from the Swedish National Inpatient Register 1987-2013...
September 7, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28937091/obstruction-of-braf-v600e-transcription-by-complementary-pna-oligomers-as-a-means-to-inhibit-braf-mutant-melanoma-growth
#13
J H Rothman, O Surriga, E de Stanchina, S D Vasudeva, G K Schwartz
Peptide nucleic acid (PNA) oligomers are DNA mimics, which are capable of binding gene sequences 1000-fold more avidly than complementary native DNA by strand invasion and effectively obstruct transcription. Irreversibly obstructing the transcription or replication of a gene sequence, such as BRAF(V600E), offers a potential route to specifically target the cancer cell itself. We have employed PNA oligomers to target BRAF(V600E) in a sequence-specific complementary manner. These PNAs have been modified by appending configurationally stabilizing cationic peptides in order to improve their cellular delivery and target avidity...
September 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28919126/low-dose-ct-for-the-diagnosis-of-appendicitis-in-adolescents-and-young-adults-locat-a-pragmatic-multicentre-randomised-controlled-non-inferiority-trial
#14
(no author information available yet)
BACKGROUND: CT radiation is arguably carcinogenic. Results from single-centre studies, mostly retrospective, have advocated lowering the CT radiation dose for the diagnosis of appendicitis. However, adoption of low-dose CT has been slow. We aimed to assess the effectiveness of low-dose CT compared with standard-dose CT in the diagnosis of appendicitis in adolescents and young adults. METHODS: We did this pragmatic, multicentre, randomised controlled non-inferiority trial at 20 South Korean teaching hospitals with little experience with low-dose CT...
November 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28893691/folate-appended-cyclodextrins-for-drug-dna-and-sirna-delivery
#15
REVIEW
Magdalena Ceborska
Drug, DNA, and siRNA delivery systems based on cyclodextrin (CD) core and connected with folate (FA) via various linkers are presented. They include simple mono-derivatized cyclodextrins as well as cyclodextrins with higher degree of substitution, both in their primary and secondary sides. Examples of simple polymers and dendrimers are also discussed. Such carriers possess properties inherent to both of their components. Cyclodextrin provides the ability to encapsulate organic molecules in its inner cavity, thus improving their solubility in water, bioavailability, and stability, while FA assures targeting folate receptor overexpressing cancer cells...
November 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28876577/surgical-burden-of-disease-at-a-regional-hospital-in-south-africa
#16
O Swart, J Pape, R Duvenage
BACKGROUND: There is limited published data describing the nature of surgical admissions at a regional level in the South African context. Worcester Hospital General Surgery has introduced an electronic online database to manage its surgical services. This study uses that database to evaluate the surgical burden of disease for the Cape Winelands East and Overberg districts of the Western Cape. METHOD: Admissions data were prospectively captured from February 2012 to January 2016, then retrospectively reviewed and classified into 5 types: (1) elective surgery/investigations (ESI); (2) trauma; (3) burns; (4) non-traumatic surgical emergencies (NTSE); (5) unplanned readmission within 30 days...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28874045/anion-selective-cholesterol-decorated-macrocyclic-transmembrane-ion-carriers
#17
Harekrushna Behera, Nandita Madhavan
Anion transporters play a vital role in cellular processes and their dysregulation leads to a range of diseases such as cystic fibrosis, Bartter's syndrome and epilepsy. Synthetic chloride transporters are known to induce apoptosis in cancer cell lines. Herein, we report triamide macrocycles that are easily synthesized and externally functionalized by pendant membrane-permeable groups. Among a variety of chains appended onto the macrocycle scaffold, cholesterol is found to be the best with an EC50 value of 0...
September 8, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28868558/delayed-release-singlet-oxygen-sensitizers-based-on-pyridone-appended-porphyrins
#18
Susan Callaghan, Mikhail A Filatov, Elisabeth Sitte, Huguette Savoie, Ross W Boyle, Keith J Flanagan, Mathias O Senge
A new type of porphyrin photosensitizer capable of generating singlet oxygen upon irradiation, storing it through binding to pyridone subunits, followed by slow release at 20-40 °C, is reported. The timescale of singlet oxygen release can be varied depending on the pyridone group substitution pattern, forming endoperoxides of different stabilities. Modified tetra- and octa-substituted pyridone-porphyrins showed solubility in water, allowing for straightforward delivery into cells. The effect of delayed singlet oxygen formation due to endoperoxide decomposition was demonstrated on cancer cells in vitro...
September 13, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28858736/the-anti-invasive-role-of-novel-synthesized-pyridazine-hydrazide-appended-phenoxy-acetic-acid-against-neoplastic-development-targeting-matrix-metallo-proteases
#19
Yasser Hussein Eissa Mohammed, Prabhu Thirusangu, Zabiulla, Vigneshwaran V, Prabhakar B T, Shaukath Ara Khanum
Neoplastic metastasis is a major process where tumor cells migrate from the primary tumor and colonize at other parts of our body to form secondary tumor. Cancer incidences are rising and novel anti-neoplastic compounds with new mechanism of actions are essential for preventing cancer related deaths. In the current examination, a novel series of pyridazine analogues 6a-l was synthesized and evaluated against metastatic neoplastic cells. Experimental data postulated compound 6j has potential cytotoxic efficacy with prolonged activity against various cancer cells, including A549, HepG2, A498, CaSki and SiHa cells...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28846407/monofunctional-bodipy-appended-imidazoplatin-for-cellular-imaging-and-mitochondria-targeted-photocytotoxicity
#20
Md Kausar Raza, Srishti Gautam, Aditya Garai, Koushambi Mitra, Paturu Kondaiah, Akhil R Chakravarty
Monofunctional platinum(II) complexes of formulation cis-[Pt(NH3)2(L)Cl](NO3), where L is an imidazole base conjugated to 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) with emissive (L(1) in 1) and nonemissive (L(2) in 2) moieties were prepared and characterized, and their singlet oxygen-mediated photoinduced cytotoxicity was studied. The 1-methylimidazole (1-MeIm) complex 3 was prepared as a control and for structural characterization by X-ray crystallography. Complexes 1 and 2 showed strong visible absorption bands at 500 nm (ε = 2...
August 28, 2017: Inorganic Chemistry
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