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Ayda Hosseinkhani, Fatemeh Tabatabaei, Maryam Mosaffa-Jahromi, Mehdi Pasalar
OBJECTIVE: The intrauterine device (IUD) is a popular contraceptive instrument with reported complications. IUD migration to the urinary bladder, a rare genitourinary tricky situation, may cause stone formation and result in urinary system sequels such as a stone formation and a recurrent infection. CASE REPORT: This is a case report of IUD migration to the urinary bladder, mineralization, and subsequent complications. We report the case of a 35-year-old woman with a copper IUD nidus stone in her urinary bladder...
January 2018: Journal of evidence-based integrative medicine
Zengsong Zhang, Guangtao Yu, Hui Li, Jingwei Liu, Xuri Huang, Wei Chen
On the basis of the first-principles DFT computations, we have systematically investigated the structures and hydrogen evolution reaction (HER) catalytic activities for pristine and Ni-doped Cu3P systems. It was revealed that the (11[combining macron]0) surface could be the one with the most exposure for the Cu3P structure. The calculated free energy values of H* (ΔGH*) are in the range from 0.012 to 0.320 eV, reflecting the HER activity on the (11[combining macron]0) surface, which is consistent with the experimentally reported results...
April 3, 2018: Physical Chemistry Chemical Physics: PCCP
R P Taylor
Artists have a long tradition of capturing the essence of Nature in their creative works. This year's cover artist, Tallmadge Doyle, uses copper plates to create prints of the complex visual textures found in Nature's scenery. Originating from careful observation, her images then undergo a stylistic evolution toward a personalized artistic vision of Nature's textures.
April 2018: Nonlinear Dynamics, Psychology, and Life Sciences
Yu Huang, Mitsuhisa Takatsuki, Akihiko Soyama, Masaaki Hidaka, Shinichiro Ono, Tomohiko Adachi, Takanobu Hara, Satomi Okada, Takashi Hamada, Susumu Eguchi
BACKGROUND Liver transplantation is indicated for patients with Wilson's disease (WD) who present either with acute liver failure or with end-stage liver disease and severe hepatic insufficiency as the first sign of disease. However, almost all reported cases have been treated with death donor liver transplantation. Here we report the case of a patient with WD associated with fulminant hepatic failure (WD-FHF) who underwent living donor liver transplantation (LDLT). CASE REPORT A 17-year-old female was diagnosed with WD-FHF based on high uric copper (10 603 μg/day, normal <100 μg/day), low serum ceruloplasmin (15 mg/dL, normal >20 mg/dL) and Kayser-Fleischer (K-F) corneal ring, and acute liver failure (ALF), acute renal failure (ARF) and grade 2 hepatic encephalopathy (HE)...
March 17, 2018: American Journal of Case Reports
Katyayani Tatiparti, Samaresh Sau, Kaustubh A Gawde, Arun K Iyer
Triple negative breast cancer (TNBC) is a difficult to treat disease due to the absence of the three unique receptors estrogen, progesterone and herceptin-2 (HER-2). To improve the current therapy and overcome the resistance of TNBC, there is unmet need to develop an effective targeted therapy. In this regard, one of the logical and economical approaches is to develop a tumor hypoxia-targeting drug formulation platform for selective delivery of payload to the drug-resistant and invasive cell population of TNBC tumors...
March 13, 2018: International Journal of Molecular Sciences
Hsuan-Lan Wang, Hsin Yeh, Yi-Chen Chen, Yen-Chih Lai, Chih-Yuan Lin, Kai-Yuan Lu, Rong-Ming Ho, Bin-Han Li, Chia-Her Lin, De-Hao Tsai
We report an aerosol-based approach to study the thermal stability of metal-organic frameworks (MOFs) for gas-phase synthesis of MOF-based hybrid nanostructures used for highly active catalysis. Temperature-programmed electrospray-differential mobility analysis (TP-ES-DMA) provides the characterization of temperature-dependent morphological change directly in the gas phase, and the results are shown to be highly correlated with the structural thermal stability of MOFs determined by the traditional measurements of porosity and crystallinity...
March 21, 2018: ACS Applied Materials & Interfaces
Qiangqiang Sun, Yujuan Dong, Zenglin Wang, Shiwei Yin, Chuan Zhao
Developing highly active electrocatalysts with low cost and high efficiency for hydrogen evolution reactions (HERs) is of great significance for industrial water electrolysis. Herein, a 3D hierarchically structured nanotubular copper-doped nickel catalyst on nickel foam (NF) for HER is reported, denoted as Ni(Cu), via facile electrodeposition and selective electrochemical dealloying. The as-prepared Ni(Cu)/NF electrode holds superlarge electrochemical active surface area and exhibits Pt-like electrocatalytic activity for HER, displaying an overpotential of merely 27 mV to achieve a current density of 10 mA cm-2 and an extremely small Tafel slope of 33...
April 2018: Small
Bing Chang, Shuai Hao, Zhixiang Ye, Yingchun Yang
Energy-efficient electrochemical water splitting is one important way to produce hydrogen fuel but still faces many challenges. In this communication, we report that an amorphous Ni-P alloy shell electrodeposited on a CuO nanowire array supported on copper foam (CuO@Ni-P NA/CF) can be used for efficient water splitting in alkaline media. As a 3D catalytic electrode, it exhibits excellent activity both for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) with overpotentials of 106 mV for HER and 275 mV for OER to achieve a current density of 30 mA cm-2 in 1...
March 1, 2018: Chemical Communications: Chem Comm
Ayako Yamamura, Yoshitaka Kikukawa, Kenji Tokunaga, Eiko Miyagawa, Shinya Endo, Hirosada Miyake, Hiroyuki Hata, Hiroaki Mitsuya, Kunihiro Yoshida, Masao Matsuoka
A 72-year-old Japanese woman suffered from mild pancytopenia 3 years before her initial hospitalization. On admission, the levels of trace elements, particularly copper, and ceruloplasmin were significantly decreased in her blood serum. Abdominal lymphadenopathy and bone marrow dysplasia were detected. Hemosiderin deposition was observed in her lymph nodes and bone marrow, and magnetic resonance imaging suggested its deposition in various organs. A novel missense pathogenic variant (c.T1670G) was detected in the ceruloplasmin gene, resulting in an amino acid change (p...
February 9, 2018: Internal Medicine
Ching-Fen Lee, Chi-Hua Chen, Yu-Chuan Wen, Tsung-Yen Chang, Ming-Wei Lai, Tang-Her Jaing
RATIONALE: We report a complicated case of cholestatic hepatitis with suspected autoimmune hemolytic anemia (AIHA) and copper toxicity syndrome after HSCT and donor lymphocyte infusion (DLI). PATIENT CONCERNS: A 19-year-1-month-old girl presented with a history of CML. She underwent matched unrelated donor HSCT and donor lymphocyte infusion subsequently. Three months later, yellowish discoloration of the skin was found, which was accompanied by progressive itchy skin, easy fatigability, insomnia, and dark urine output...
December 2017: Medicine (Baltimore)
Forouzan Elyasi
Wilson's disease (WD) is a neurodegenerative disorder due to copper metabolism. Schizophrenia-like psychosis and delusional disorder are rare forms of psychiatric manifestations of WD. The lack of recognition of these signs and symptoms as being attributable to WD often leads to delays in diagnosis and management. Knowledge about relationship of the psychiatric manifestations to WD can help with the administration of adequate management aimed at both the psychiatric issues and underlying WD. The objectives of this article are to review case reports whose subject is the incorrect diagnosis of schizophrenia or schizophrenia-like syndrome in patients with WD and to detail one case of this mismanagement of the disease...
September 2017: Indian Journal of Psychological Medicine
Min Liu, Meifang Jin, Xuqin Chen, Bo Wan, Yue Guo, Mao Sheng, Linqi Chen, Lei Zhao, Danping Huang, Yan Li
Wilson's disease (WD) is an autosomal recessive disorder caused by defective function of the copper-transporting ATP7B protein. Symptoms are typically related to the brain and liver, while endocrinologic abnormalities are rare. Here, we reported a 12-year-old female patient that was initially presented with unusual skin darkening and low serum level of adrenocorticotropic hormone and diagnosed as having adrenocortical insufficiency. We further screened the mutation in ATP7B by direct DNA sequencing and found compound heterozygous mutations: a known pathogenic mutation in exon8:c...
January 2018: Journal of Molecular Neuroscience: MN
Eloy Isarain-Chávez, Maria Dolors Baró, Carlos Alcantara, Salvador Pané, Jordi Sort, Eva Pellicer
Mesoporous Fe-Pt thin films are obtained by micelle-assisted electrodeposition onto metallic substrates with dissimilar activity (namely, gold, copper, and aluminum seed layers evaporated on Si/Ti) under constant applied potential (E=-1.1 V vs. Ag/AgCl) and deposition time (600 s). The amphiphilic triblock copolymer Pluronic P-123 is used as a soft template to guide the formation of mesopores. The occurrence of pores (ca. 7 nm in diameter) with narrow size distribution, distributed evenly over the surface, is observed in all cases...
January 23, 2018: ChemSusChem
Aurélia Poujois, Michaela Pernon, Jean-Marc Trocello, France Woimant
Wilson disease (WD) is a rare genetic disorder characterized by copper overload in the liver and the brain. Neurological presentations are mainly related to the accumulation of copper in the basal ganglia, the brainstem, and the cerebellum. Dysarthria is a frequent symptom, with dystonic, spastic, or parkinsonian components and is usually resistant to medical or voice rehabilitation therapies. Here, we report the case of a patient with WD diagnosed at the age of 12, who presented a severe and constant dysarthria from dystonic origin which was unresponsive to benzodiazepines and anticholinergic drugs...
2017: Frontiers in Neurology
Angelie Singh, Caroline Trumpff, Jeanine Genkinger, Alida Davis, Marisa Spann, Elizabeth Werner, Catherine Monk
Adolescent pregnant women are at greater risk for nutritional deficits, stress, and depression than their adult counterparts, and these risk factors for adverse pregnancy outcomes are likely interrelated. This study evaluated the prevalence of nutritional deficits in pregnant teenagers and assessed the associations among micronutrient dietary intake, stress, and depression. One hundred and eight pregnant Latina adolescents completed an Automated Self-Administered 24-hour dietary recall (ASA24) in the 2nd trimester...
November 4, 2017: Nutrients
An Wang, Hewei Yang, Ting Song, Quan Sun, Hui Liu, Tingting Wang, Heping Zeng
Cu NPs (copper nanoparticles) were synthesized in situ on the surface of CuFe2O4 (cuprospinel). The enhancement of the separation efficiency of photogenerated e(-)/h(+) and the catalytic quantum efficiency showed that the LSPR (local surface plasmon resonance) of Cu NPs facilitated the photocatalytic reaction activity of CuFe2O4. And due to the fact that CuFe2O4 was constructed with Cu-O in the tetrahedral site and Fe-O in the octahedral site, the results of DTG and Raman spectra after HER (hydrogen evolution reaction) displayed that the phase change of Fe-O in the octahedral site of CuFe2O4 took place during the HER process, and along with the peak of Fe(2+) in XPS spectra after HER, which indicated that light activated Fe-O in the octahedral site was responsible for the photocatalytic process...
October 26, 2017: Nanoscale
Yun Zhang, Yuling Ma, Yu-Yun Chen, Lu Zhao, Lin-Bo Huang, Hao Luo, Wen-Jie Jiang, Xing Zhang, Shuai Niu, Daojiang Gao, Jian Bi, Guangyin Fan, Jin-Song Hu
Nitrogen (N)-doped carbons combined with transition-metal nanoparticles are attractive as alternatives to the state-of-the-art precious metal catalysts for hydrogen evolution reaction (HER). Herein, we demonstrate a strategy for fabricating three-dimensional (3D) Cu-encased N-doped carbon nanotube arrays which are directly grown on Cu foam (Cu@NC NT/CF) as a new efficient HER electrocatalyst. Cu nanoparticles are encased here instead of common transition metals (Fe, Co, or Ni) for pursuing a well-controllable morphology and an excellent activity by taking advantage of its more stable nature at high temperature and in acidic or alkaline electrolyte...
October 12, 2017: ACS Applied Materials & Interfaces
Bo You, Xuan Liu, Guoxiang Hu, Sheraz Gul, Junko Yano, De-En Jiang, Yujie Sun
The development of low-cost hybrid water splitting-biosynthetic systems that mimic natural photosynthesis to achieve solar-to-chemical conversion is of great promise for future energy demands, but often limited by the kinetically sluggish hydrogen evolution reaction (HER) on the surface of nonprecious transition metal catalysts in neutral media. It is thus highly desirable to rationally tailor the reaction interface to boost the neutral HER catalytic kinetics. Herein, we report a general surface nitrogen modification of diverse transition metals (e...
August 22, 2017: Journal of the American Chemical Society
Pao-Hsun Huang, Yeong-Her Wang, Jhong-Ciao Ke, Chien-Jung Huang
The theoretical mechanism of open-circuit voltages (VOC) in OSCs based on various small molecule organic materials is studied. The structure under investigation is simple planar heterojunction (PHJ) by thermal vacuum evaporation deposition. The various wide band gaps of small molecule organic materials are used to enhance the power conversion efficiency (PCE). The donor materials used in the device include: Alpha-sexithiophene (α-6T), Copper(II) phthalocyanine (CuPc), boron subnaphthalocyanine chloride (SubNc) and boron Subphthalocyanine chloride (SubPc)...
August 9, 2016: Materials
Chi-Ang Tseng, Chiao-Chen Chen, Rajesh Kumar Ulaganathan, Chuan-Pei Lee, Hsu-Cheng Chiang, Chin-Fu Chang, Yit-Tsong Chen
In this study, we report a novel, one-step synthesis method to fabricate multilayer graphene (MLG)-wrapped copper nanoparticles (CuNPs) directly on various substrates (e.g., polyimide film (PI), carbon cloth (CC), or Si wafer (Si)). The electrical resistivities of the pristine MLG-CuNPs/PI and MLG-CuNPs/Si were measured 1.7 × 10(-6) and 1.4 × 10(-6) Ω·m, respectively, of which both values are ∼100-fold lower than earlier reports. The MLG shell could remarkably prevent the Cu nanocore from serious damages after MLG-CuNPs being exposed to various harsh conditions...
July 24, 2017: ACS Applied Materials & Interfaces
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