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Application of Nondestructive Testing in Cyclic Fatigue Evaluation of Endodontic Ni-Ti Rotary Instruments
Nondestructive testing Nickel-titanium Cyclic fatigue
2009/9/14
The purpose of this study was to investigate the application of nondestructive testing in cyclic fatigue evaluation of endodontic ProFile® nickel-titanium (NiTi) rotary instruments. As-received Pr...
Influence of Cyclic Loading on Fiber Post and Composite Resin Core
Fiber post and composite resin core Failure load Cyclic loading
2009/9/11
From a selection of four kinds of post and core systems, including a fiber post and composite resin core, the purpose of this study was to determine the most effective system for the restoration of en...
Influence of lateral-oblique cyclic loading on abutment screw loosening of internal and external hexagon implants
Screw loosening Preload Abutment screw
2009/9/11
To date, there is no evidence that internal anti-rotation configurations are better than external ones. The purpose of this study was to evaluate the effect of eccentric cyclic loading on abutment scr...
Effects of attrition, prior acid-etching, and cyclic loading on the bond strength of a self-etching adhesive system to dentin
Attrition Self-etching adhesive system Microtensile bond strength
2009/9/11
The purpose of this study was to evaluate the effects of dentin attrition, phosphoric acid etching, and cyclic loading on the microtensile bond strength (μTBS) of a self-etching adhesive system to den...
Effect of loading weight on bond durability of composite — type resin cement under cyclic impact test (part 2).Loading with light weight of 100–120 g
Cyclic impact load Adhesive resin cement Bond durability
2009/9/11
The bond durability of composite-type resin cement was evaluated by means of cyclic impact tests using three different loads. In terms of experimental setup, a casting alloy, 12%Au-Pd-Ag, was used as ...
High pressure neurological syndrome: antagonistic effects of helium pressure and inhalation anesthetics on the dopamine-sensitive cyclic AMP response
High pressure neurological syndrome animal rat
2009/7/17
The antagonistic effects of helium pressure and certain inhalation anesthetics on the dopamine-sensitive cAMP response in the caudate nucleus of rat brain were examined. Helium pressure suppressed bas...
Effects of Cyclic Tension Force on Differentiation in Human Periodontal Ligament Cells
mechanical stress differentiation human periodontal ligament (HPDL) cell periostin Twist
2009/5/20
The periodontal ligament is exposed to mechanical stress such as occlusion, so periodontal ligament cells may have defenses against mechanical stress. We searched for the influence of mechanical stres...
Effects of Cyclic Strain and Growth Factors on Vascular Smooth Muscle Cell Responses
Cyclic Strain Growth Factors Proliferation Gene Regulation Vascular Smooth Muscle Cells
2010/1/22
Under physiological and pathological conditions, vascular smooth muscle cells (SMC) are exposed to different biochemical factors and biomechanical forces. Previous studies pertaining to SMC responses ...
Ca2+/calmodulin-dependent cyclic nucleotide phosphodiesterase in cGMP metabolism in rabbit parotid acinar cells
Ca2+/calmodulin-dependent cyclic nucleotide phosphodiesterase cGMP metabolism rabbit parotid acinar cells
2009/3/2
Muscarinic cholinergic receptor activation provokes cGMP formation in parotid acinar cells. We investigated the involvement of Ca2+/calmodulin-dependent cyclic nucleotide phosphodiesterase (PDE1) in...
The Effects of Cyclic Adenine Nucleotides, Phosphodiesterase Inhibitors, and Cauda Epididymidal Fluid on the Motility of Rat Epididymal Spermatozoa
spermatozoa motility epididymal rat
2009/2/19
Experiments were performed to determine whether the rat epididymis secretes a "forward-motility" factor(s) similar to that found by others in the bovine epididymis. Lumen content of the rat caput ...
In Vitro Effect of Inhibin on Cyclic AMP-Phosphodiesterase Activity in Rat Testes
inhibin cyclic AMP-phosphodiesterase
2009/2/19
We have previously reported that incubation of testicular slices with inhibin in the presence of 6 x 10-8 M oFSH resulted in a dose-related reduction in accumulation of cyclic AMP due to a decreas...
Observations on Cyclic Nucleotides in Human Semen
semen cyclic AMP cyclic GMP adenylate cyclase fructose
2009/2/19
In agreement with earlier studies, we have found that the human seminal plasma yields considerably higher values for cyclic nucleotides when compared with spermatozoa. However, we have also show...
Interaction between Ca2+, cyclic 3',5' adenosine monophosphate, the superoxide anion, and tyrosine phosphorylation pathways in the regulation of human sperm capacitation
Calmodulin phosphatase kinase
2009/2/17
In order to fertilize the egg, spermatozoa must go through the capacitation process where they experience Ca2+ uptake, increases in cyclic 3',5' adenosine monophosphate (cAMP) concentrations, supe...
The cyclic GMP-specific phosphodiesterase inhibitor, sildenafil, stimulates human sperm motility and capacitation but not acrosome reaction
cyclic GMP-specific phosphodiesterase inhibitor sildenafil human sperm motility capacitation
2008/12/25
Capacitation is the series of transformations that spermatozoa undergo in the female genital tract in order to bind to the zona pellucida, initiate the acrosome reaction, and fertilize an egg. Cyc...
A Cyclic Adenosine 3',5'-Monophosphate Stimulates Phospholipase C1-Calcium Signaling via the Activation of Tyrosine Kinase in Boar Spermatozoa
Sperm cAMP SYK PLC calcium store
2008/12/23
The aim of this study was to reveal a downstream part of the intracellular signaling that is mediated by cyclic adenosine monophosphate (cAMP)-dependent tyrosine kinases, including spleen tyrosine (...