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https://www.readbyqxmd.com/read/28650404/microsurgery-fellowship-at-st-vincent-s-hospital-sydney-australia-the-ultimate-hidden-gem
#1
Anne M Collins
No abstract text is available yet for this article.
June 23, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28648462/cyclic-tetrapeptide-hdac-inhibitors-as-potential-therapeutics-for-spinal-muscular-atrophy-screening-with-ipsc-derived-neuronal-cells
#2
Jiun-I Lai, Luke J Leman, Sherman Ku, Chris J Vickers, Christian A Olsen, Ana Montero, M Reza Ghadiri, Joel M Gottesfeld
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder that is caused by inactivating mutations in the Survival of motor neuron 1 (SMN1) gene, resulting in decreased SMN protein expression. Humans possess a paralog gene, SMN2, which contains a splicing defect in exon 7 leading to diminished expression of full-length, fully functional SMN protein. Increasing SMN2 expression has been a focus of therapeutic development for SMA. Multiple studies have reported the efficacy of histone deacetylase inhibitors (HDACi) in this regard...
June 10, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28646533/palladium-catalyzed-fluoroarylation-of-gem-difluoroalkenes
#3
Hai-Jun Tang, Ling-Zhi Lin, Chao Feng, Teck-Peng Loh
Pd-catalyzed fluoroarylation of gem-difluoroalkenes with aryl halides is disclosed. By taking advantage of the in situ generated α-CF3-benzylsilver intermediates derived from the nucleophilic addition of silver fluoride onto gem-difluoroalkenens, the present strategy bypasses the employment of strong base, thus enabling a mild and general synthetic protocol for the ready access of non-symmetric α,α-disubstituted trifluoroethane derivatives.
June 24, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28645049/gaseous-elemental-mercury-in-the-marine-boundary-layer-and-air-sea-flux-in-the-southern-ocean-in-austral-summer
#4
Jiancheng Wang, Zhouqing Xie, Feiyue Wang, Hui Kang
Gaseous elemental mercury (GEM) in the marine boundary layer (MBL), and dissolved gaseous mercury (DGM) in surface seawater of the Southern Ocean were measured in the austral summer from December 13, 2014 to February 1, 2015. GEM concentrations in the MBL ranged from 0.4 to 1.9ngm(-3) (mean±standard deviation: 0.9±0.2ngm(-3)), whereas DGM concentrations in surface seawater ranged from 7.0 to 75.9pgL(-1) (mean±standard deviation: 23.7±13.2pgL(-1)). The occasionally observed low GEM in the MBL suggested either the occurrence of atmospheric mercury depletion in summer, or the transport of GEM-depleted air from the Antarctic Plateau...
June 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28644920/genome-scale-metabolic-models-applied-to-human-health-and-disease
#5
REVIEW
Daniel J Cook, Jens Nielsen
Advances in genome sequencing, high throughput measurement of gene and protein expression levels, data accessibility, and computational power have allowed genome-scale metabolic models (GEMs) to become a useful tool for understanding metabolic alterations associated with many different diseases. Despite the proven utility of GEMs, researchers confront multiple challenges in the use of GEMs, their application to human health and disease, and their construction and simulation in an organ-specific and disease-specific manner...
June 23, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28643733/a-prospective-randomized-controlled-study-of-cisplatin-versus-carboplatin-based-regimen-in-advanced-squamous-nonsmall-cell-lung-cancer
#6
Amr Shafik Saad, Ramy R Ghali, May Ahmed Shawki
BACKGROUND: The use of cisplatin (Cis) versus carboplatin (Carb) in the treatment of advanced nonsmall cell lung cancer (NSCLC) is controversial. The aim of the study was to compare the safety and efficacy of Cis versus Carb in squamous NSCLC. PATIENTS AND METHODS: A prospective, randomized, controlled, open-label study was conducted on advanced squamous NSCLC patients who were randomly assigned to receive Cis (40 mg/m 2 [day 1 and day 8]) or Carb (area under the curve = 5 [day 1]) combined with gemcitabine [Gem] (1000 mg/m 2 [day 1 and day 8]) of a 3-week schedule for six cycles...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28640541/design-and-fabrication-of-dual-targeted-delivery-system-based-on-gemcitabine-conjugated-human-serum-albumin-nanoparticles
#7
Parisa Norouzi, Mohsen Amini, Fatemeh Mottaghitalab, Farnaz Sadat Mirzazadeh Tekie, Rassoul Dinarvand, Zahra Hadavand Mirzaie, Fatemeh Atyabi
Dual-targeted drug delivery system has established their reputation as potent vehicles for cancer chemotherapies. Herein, gemcitabine (Gem) was conjugated to human serum albumin (HSA) via dithiodipropionic anhydride (DTDPA) to fabricate Gem-HSA nanoparticles. It was hypothesized that this system can enhance the low stability of Gem and can improve its intracellular delivery. Furthermore, folate was applied as targeting agent on HSA nanoparticles for increasing the tumor selectivity of Gem. In order to evaluate the structural properties of synthesized products, (1) H NMR and FT-IR were performed...
June 22, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28636030/base-promoted-deborylative-secondary-alkylation-of-n-heteroaromatic-n-oxides-with-internal-gem-bis-pinacolato-boryl-alkanes-a-facile-derivatization-of-2-2-bipyridyl-analogues
#8
Chiwon Hwang, Woohyun Jo, Seung Hwan Cho
A base-promoted, secondary alkylation of N-heteroaromatic N-oxides using internal gem-bis[(pinacolato)boryl]alkanes as alkylation reagents is reported. The reaction exhibits a broad scope, providing deoxygenated secondary alkylated N-heteroaromatic compounds with high efficiency. The usefulness of the developed protocol is evidenced by the sequential direct alkylation of 2,2'-bipyridine-N-oxide.
June 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28634650/a-randomized-phase-ii-study-of-gemcitabine-plus-z-360-a-cck2-receptor-selective-antagonist-in-patients-with-metastatic-pancreatic-cancer-as-compared-with-gemcitabine-plus-placebo
#9
Makoto Ueno, Chung Pin Li, Masafumi Ikeda, Hiroshi Ishii, Nobumasa Mizuno, Taketo Yamaguchi, Tatsuya Ioka, Do Youn Oh, Wataru Ichikawa, Takuji Okusaka, Yutaka Matsuyama, Daichi Arai, Li Tzong Chen, Young Suk Park, Junji Furuse
BACKGROUND: We investigated the efficacy and safety of 60, 120, or 240 mg of Z-360, which is a highly potent cholecystokinin2-receptor-selective antagonist, combined with gemcitabine in patients with metastatic pancreatic cancer. METHODS: Patients were randomly assigned in a 1:1:1:1 ratio to one of four treatment groups. Patients received 1000 mg/m(2) gemcitabine for each cycle and Z-360 tablets of 60 mg (GZ 60 mg group), 120, 240 mg or placebo tablets (Gem group) orally twice daily...
June 20, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28633064/an-innovative-approach-to-bioremediation-of-mercury-contaminated-soils-from-industrial-mining-operations
#10
Damien McCarthy, Grant C Edwards, Mae S Gustin, Andrew Care, Matthieu B Miller, Anwar Sunna
Soils contaminated with mercury (Hg) have proved expensive and logistically difficult to remediate. Research continues into finding suitable environmentally-friendly and efficient ways of achieving this end. Bioremediation is an option, which employs the strategies microorganisms have evolved to deal with Hg. One microbial strategy involves uptake and intracellular volatilisation of mercuric ions, which passively diffuse from the cell and back into the atmosphere. In this work, Pseudomonas veronii cells grown to stationary phase were immobilised in a xanthan gum-based biopolymer via encapsulation...
June 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28631497/cost-effectiveness-of-blinatumomab-versus-salvage-chemotherapy-in-relapsed-or-refractory-philadelphia-chromosome-negative-b-precursor-acute-lymphoblastic-leukemia-from-a-us-payer-perspective
#11
Thomas E Delea, Jordan Amdahl, Diana Boyko, May Hagiwara, Zachary F Zimmerman, Janet L Franklin, Ze Cong, Guy Hechmati, Anthony Stein
Objective To evaluate the cost-effectiveness of blinatumomab (Blincyto) versus standard of care (SOC) chemotherapy in adults with relapsed or refractory (R/R) Philadelphia-chromosome-negative (Ph-) B-precursor acute lymphoblastic leukemia (ALL) based on the results of the phase 3 TOWER study from a US healthcare payer perspective. Methods The Blincyto Global Economic Model (B-GEM), a partitioned survival model, was used to estimate the incremental cost-effectiveness ratio (ICER) of blinatumomab versus SOC. Response rates, event free survival (EFS), overall survival (OS), numbers of cycles of blinatumomab and SOC, and transplant rates were estimated from TOWER...
June 20, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28628311/pushing-the-limits-of-oxygen-balance-in-1-3-4-oxadiazoles
#12
Qiong Yu, Ping Yin, Jiaheng Zhang, Chunlin He, Gregory H Imler, Damon A Parrish, Jean'ne M Shreeve
Gem-trinitromethyl groups were introduced into a 1,3,4-oxadiazole ring to give the first example of a bifunctionalized single five-membered ring with six nitro groups. 2,5-Bis(trinitromethyl)-1,3,4-oxadiazole (12) has a high calculated crystal density of 2.007 g cm(-3) at 150 K (1.941 g cm(-3) at 293 K) and a very high positive oxygen balance (39.12%), which makes it a strong candidate as a high energy dense oxidizer. The dihydroxylammonium and dihydrazinium salts of bis(trinitromethyl)-1,3,4-oxadiazole (5 and 6) exhibit excellent calculated detonation properties (5, vD = 9266 m s(-1), P = 38...
June 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28627751/synthesis-of-gem-dinitromethylated-and-fluorodinitromethylated-derivatives-of-5-5-dinitro-bis-1-2-4-triazole-as-promising-high-energy-density-materials
#13
Qinghua Zhang, Shi Huang, Junjun Tian, Xiujuan Tian, Kangcai Wang
The gem-dinitromethylated and fluorodinitromethylated 5,5'-dinitro-3,3'-bis-1,2,4-triazole (DNBT) (2 and 3) along with seven ionic derivatives (4-9) were successfully synthesized and characterized by NMR and IR spectroscopies, elemental analysis, single crystal X-ray diffraction (XRD), and differential scanning calorimetry (DSC). XRD revealed that compounds 2 and 3 were crystallized in the monoclinic P21/n space group and compound 5 was crystallized in the monoclinic P21/c space group. The physicochemical properties for the as-synthesized compounds 2-9 were investigated and the results indicated that compounds 3, 6 and 7 exhibited a good balance between high energy and low sensitivity, indicating their promise as new high-energy-density materials (HEDMs)...
June 19, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28624255/-psoriatic-patients-analysis-of-patients-dissatisfied-with-their-management
#14
E Mahé, F Maccari, A Beauchet, N Quiles-Tsimaratos, N Beneton, J Parier, H Barthelemy, C Goujon-Henry, G Chaby, D Thomas-Beaulieu, G Géner, L Wagner, V Pallure, S Devaux, A Vermersch-Langlin, P Pfister, J Jégou, C Livideanu, M-L Sigal
BACKGROUND: The French are frequently regarded as grouchy. In a recent study, we observed a high proportion of patients initially consulting for psoriasis because they were dissatisfied with their previous therapy. We analyzed the characteristics of these patients. PATIENTS AND METHODS: This was a cross-sectional multicenter study in 40 centers belonging to the ResoPso (psoriasis treatment network) multicenter study group, with consecutive inclusions over a period of 11months in 2014...
June 14, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28619751/synthesis-and-profiling-of-a-novel-potent-selective-inhibitor-of-chk1-kinase-possessing-unusual-n-trifluoromethylpyrazole-pharmacophore-resistant-to-metabolic-n-dealkylation
#15
Pounami Samadder, Tereza Suchanková, Ondrej Hylse, Prashant Khirsariya, Fedor Nikulenkov, Stanislav Drápela, Nicol Straková, Petr Vaňhara, Kateřina Vašíčková, Hana Kolářová, Lucia Binó, Miroslava Bittová, Petra Ovesná, Peter Kollar, Radek Fedr, Milan Ešner, Josef Jaroš, Aleš Hampl, Lumír Krejčí, Kamil Paruch, Karel Soucek
Checkpoint-mediated dependency of tumor cells can be deployed to selectively kill them without substantial toxicity to normal cells. Specifically, loss of CHK1, a serine threonine kinase involved in the surveillance of the G2/M checkpoint in the presence of replication stress inflicted by DNA damaging drugs, has been reported to dramatically influence the viability of tumor cells. CHK1's pivotal role in maintaining genomic stability offers attractive opportunity for increasing the selectivity, effectivity and reduced toxicity of chemotherapy...
June 15, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28618762/antiinflammatory-and-antioxidant-effects-of-gemcitabine-in-collagen-induced-arthritis-model
#16
Adile Ferda Dağli, Ahmet Karataş, Cemal Orhan, Mehmet Tuzcu, Metin Özgen, Kazım Şahin, Süleyman Serdar Koca
BACKGROUND/AIM: Gemcitabine (GEM) has antiproliferative effects on lymphocytes, which are potent pathogenic actors of rheumatoid arthritis (RA). The aim of the study was to investigate the therapeutic potential of GEM on collagen-induced arthritis (CIA). MATERIALS AND METHODS: Arthritis was induced by the intradermal injection of chicken type II collagen with incomplete Freund's adjuvant into albino Wistar rats. Doses of 5 and 20 mg/kg GEM were administered twice a week after the 14th day, which marked the onset the arthritis...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28616753/gemcitabine-monotherapy-in-patients-with-heavily-treated-nasopharyngeal-cancer-a-case-series
#17
Tomohiro Enokida, Shinya Uozumi, Takao Fujisawa, Yuri Ueda, Susumu Okano, Makoto Tahara
BACKGROUND: Although gemcitabine is thought to play a critical role in the treatment of nasopharyngeal cancer, no research to evaluate the efficacy and toxicity of gemcitabine monotherapy has been conducted in Japan. METHODS: We retrospectively reviewed eight nasopharyngeal carcinoma patients treated with gemcitabine monotherapy at National Cancer Center Hospital East between May 2015 and August 2016. The main eligibility criteria were (1) histopathologically proven NPC; (2) tumor recurrence or an initial M1 TNM stage diagnosis; (3) at least two other types of systemic chemotherapy prior to gemcitabine; (4) no other active malignant tumor during treatment...
June 14, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28613344/ag-i-catalyzed-oxidative-decarboxylation-of-difluoroacetates-with-activated-alkenes-to-form-difluorooxindoles
#18
Wen Wan, Jialiang Li, Guobin Ma, Yunrong Chen, Haizhen Jiang, Hongmei Deng, Jian Hao
A silver-catalyzed oxidative decarboxylative gem-difluoromethylenation of difluoroacetates with activated alkenes under mild reaction conditions has been developed. This radical cascade reaction provides a new method for the construction of a variety of gem-difluoromethylenated oxindoles.
June 27, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28612944/the-skn-1-nrf2-transcription-factor-can-protect-against-oxidative-stress-and-increase-lifespan-in-c-%C3%A2-elegans-by-distinct-mechanisms
#19
Jennifer M A Tullet, James W Green, Catherine Au, Alexandre Benedetto, Maximillian A Thompson, Emily Clark, Ann F Gilliat, Adelaide Young, Kathrin Schmeisser, David Gems
In C. elegans, the skn-1 gene encodes a transcription factor that resembles mammalian Nrf2 and activates a detoxification response. skn-1 promotes resistance to oxidative stress (Oxr) and also increases lifespan, and it has been suggested that the former causes the latter, consistent with the theory that oxidative damage causes aging. Here, we report that effects of SKN-1 on Oxr and longevity can be dissociated. We also establish that skn-1 expression can be activated by the DAF-16/FoxO transcription factor, another central regulator of growth, metabolism, and aging...
June 14, 2017: Aging Cell
https://www.readbyqxmd.com/read/28612202/management-of-unresectable-locally-advanced-pancreatic-adenocarcinoma
#20
REVIEW
M Salgado, S Arévalo, O Hernando, A Martínez, R Yaya, M Hidalgo
The diagnosis of unresectable locally advanced pancreatic adenocarcinoma (LAPC) requires confirmation, through imaging tests, of the unfeasibility of achieving a complete surgical resection, in the absence of metastatic spread. The increase in overall survival (OS), together with an appropriate symptom management is the therapeutic target in LAPC, maintaining an acceptable quality of life and, if possible, increasing the time until the appearance of metastasis. Chemoradiation (CRT) improves OS compared to best support treatment or radiotherapy (RT) but with greater toxicity...
June 13, 2017: Clinical & Translational Oncology
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