Laser-assisted Cellular Electrophysiology Measurement System

Patch-clamp technique is the gold standard for cellular electrophysiological measurements, which is capable of measuring single ion transport events across the cell membrane. However, the measurement possesses significant complexity, and it requires a high level of expertise, while its experimental throughput is nevertheless considerably low. Here, we suggest and experimentally demonstrate a laser-assisted method for performing cellular electrophysiological measurements. Femtosecond laser pulses, coupled to an optical microscope, are used to form a sub-micrometer hole on a thin polymer membrane separating two electrodes, where a nearby cell is subsequently placed onto the hole by negative pressure. Afterwards, the cell is punctured using subsequent laser exposure, revealing the cell membrane over the hole for electrophysiological recording. This system could be used to increase the output amount of the electrophysiological measurements substantially.Comment: 4 pages, 4 figure

The Advocate - June 8, 1961

Original title (1951-1987)--The Advocate: official publication of the Archdiocese of Newark (N.J.)

Electronic structure and magnetic properties of PbMO3 (M = Fe, Co, Ni) magnetic perovskites: An ab initio study

Gokoglu, Gokhan/0000-0002-2456-6397; Erkisi, Aytac/0000-0001-7995-7590WOS: 000345581400006We present the electronic, magnetic and structural properties of the magnetic transition metal oxides PbMO3 (M= Fe, Co, Ni) in cubic perovskite structure. The calculations are based on the density functional theory (DFT) within plane-wave pseudopotential method and local spin density approximation (LSDA) of the exchange-correlation functional. Onsite Coulomb interaction is also included in calculations (LSDA + U). The systems are considered in ferromagnetic (FM) and G-type antiferromagnetic (G-AFM) order. FM structures are energetically more favored than G-AFM and than non-magnetic states for all the systems studied. The spin-polarized electronic band structures show that all the structures have metallic property in FM order without Hubbard-U interaction (U-eff = 0). However, the inclusion of on-site Coulomb interaction (U-eff = 7 eV) opens a semiconducting gap for majority spin channel of PbFeO3 and of PbNiO3 resulting in a half-metallic character. PbCoO3 system remains as metallic with LSDA + U scheme. Bonding features of all structures are largely determined by the hybridizations between O-p and d-states of transition metal atoms. The partial magnetic moment of Fe atom in PbFeO3 is enhanced by inclusion of Hubbard-U interaction (2.55 mu B double right arrow 3.78 mu B). Total magnetic moments of half-metallic PbFeO3 and of PbNiO3 compounds are very close to integer values.TUBITAK (The Scientific & Technological Research Council of Turkey) through TR-Grid e-Infrastructure ProjectTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)This research was supported in part by TUBITAK (The Scientific & Technological Research Council of Turkey) through TR-Grid e-Infrastructure Project, part of the calculations have been carried out at ULAKB. I M Computer Center

Why Some Countries are Immune to Resource Curse: The Role of Economic Norms

Replication material for Aytac, Erdem, Michael Mousseau, Omer F. Orsun. (Forthcoming) Why Some Countries are Immune to Resource Curse: The Role of Economic Norms. Democratizatio

Crimean-Congo Hemorrhagic Fever: Retrospective Evaluation of Clinical Features and Laboratory Findings of 16 Cases

WOS:000609505000011Introduction: Crimean-Congo Hemorrhagic Fever (CCHF) is a zoonotic disease frequently transmitted by tick bite and accompanied by fever and bleeding. It may cause important public health problems. Besides clinical symptoms and epidemiological history, blood count and biochemical test results are the first clues for CCHF. in this study, we aimed to retrospectively evaluate 16 patients who were followed and treated due to CCHF in our hospital. Materials and Methods: The patients who were followed up and treated with CCHF between 2009-2019 in our clinic were evaluated retrospectively in terms of demographic characteristics, presenting complaints, presence of tick history, laboratory parameters, necessity of blood products replacement, hospitalization periods, ribavirin treatment and one-month survival. Results: Sixteen patients (ten females, six males, mean age 50.37 +/- 18.01 (min: 18-max: 79)] with the diagnosis of CCHF were included into the study. Presenting complaints were fever (16/16, 100%), fatigue (16/16, 100%), bleeding (9/16, 56.2%), petechial rash (7/16, 43.7%). nausea and vomiting (6/16, 37.5%). There was a history of tick contact in 14 cases (87.5%) but not in two cases. Supportive treatment was applied to all cases, and droplet and contact isolation were applied. Blood product replacement was performed in five patients (31.2%), and ribavirin was administered in nine patients (56.2%). Mortality rate was 6.3% (1/16). Conclusion: Crimean-Congo Hemorrhagic Fever is an endemic disease in our country. Especially in spring and summer months, patients with fever and cytopenia on hemogram should be questioned, and tick contact should be sought

Systematic review of Lyme disease in Turkey

###EgeUn###A systematic review was conducted with the aim of describing the demographical data, features and outcomes of patients with Lyme disease (LD), reported from Turkey. Three international database (electronic PubMed, Web of Science and Scopus) and two national database (Ulakbim and Turkmedline) searches were performed using the following keywords (['Lyme' or 'Borrelia burgdorferi' or 'Borrelia' or 'Borreliosis'] and 'Turkey [ and/country]'). National Notifiable Diseases Surveillance System (NNNDS) of Centers for Disease Control and Prevention (CDC) criteria were used for classification. A PRISMA-based algorithm was used for systematic review. There were a total of 75 LD cases in 36 different reports. Studies related to LD are confined to case reports. We believe that LD is an important healthcare problem in Turkey and to our knowledge this is the first systematic review from this country

First-principles investigation of LaGaO3 and LaInO3 lanthanum perovskite oxides

WOS: 000379262100006Among the class of ABO(3)-type perovskite oxides, LaMO3 (M=Ga and In) compounds are investigated in cubic (Pm-3m), tetragonal (P4mm), hexagonal (P-3m1), rhombohedral (R-3c) and orthorhombic (Pbnm) phases using generalised gradient approximation (GGA) within the density functional theory. On-site Coulomb interaction is also included in the calculations (GGA+U). After the determination of the stable phase, phase transition pressures have also been calculated. Then, their full structural, mechanical, electronic, optical and vibrational properties have been studied in stable orthorhombic (Pbnm) phase. Both compounds are non-magnetic insulators in their ground states. The energy gaps (E-g) of LaGaO3 and LaInO3 compounds have been found as 3.14 and 2.55eV, respectively. The calculated elastic constants and phonon dispersion curves confirm the stability of orthorhombic phase mechanically and dynamically.Ahi Evran University Research Project UnitAhi Evran University [PYO-KMY.4001.15.001]This work was supported by the Ahi Evran University Research Project Unit [project number PYO-KMY.4001.15.001]

The trivest in overreaching syndrome: Cardiac fatigue, muscular weakness, and vascular dysfunction

Although the underlying mechanisms responsible for cardiac dysfunction after prolonged exercise remains to be elucidated, it has reported cardiac deterioration following exhaustive exercise in the absence of underlying cardiovascular diseases, which has been attributed to cardiac fatigue. The objective of this study was to evaluate cardiac functions, exercise capacity, and flow-mediated dilatation in overreaching syndrome. We studied 13 male marathon runners who took part in a marathon. Cardiopulmonary exercise testing, transthoracic echocardiography and endothelium-dependent vasodilatation of the brachial artery were performed at before- and after-race. Peak oxygen consumption, left ventricular tissue Doppler imaging parameters and flow-mediated dilatation were decreased after-race values compared with before- race values. Overreaching syndrome could arise involves a physio-pathological trivest, cardio-vasculo-muscular axis, which include three vicious cycles. (C) 2007 Published by Elsevier Ireland Ltd

Ductal Adenocarcinoma of the Prostate With a Rare Clinical Presentation; Late Gastric Metastasis

A 67 year male had robotic prostatectomy whose pathology revealed mixed type prostate cancer composed of 55% ductal and 45% acinar components. The patient was then admitted to hospital with sudden health problems including ascites and serious vomiting attacks in the 46th month after prostatectomy and the PSA test was 4565 ng/mL. Gastroscopic biopsy was reported and proved immunhistochemically undifferentiated ductal prostate cancer metastasis. This is the first report of late gastric metastasis of ductal prostate cancer