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71.
Limitation of exercise tolerance is a hallmark of heart failure. Anaerobic threshold is a quantitative, reproducible, nonmotivational, submaximal index of exercise tolerance. The pathophysiological significance and methods of determination of anaerobic threshold are matters of debate. The principal aspects of such problems are discussed in this paper. 相似文献
72.
Michele Scivetti Alberta Lucchese Vito Crincoli Giovanni Pietro Pilolli Gianfranco Favia 《Ultrastructural pathology》2013,37(2):48-51
Liesegang rings are concentric noncellular lamellar structures, occasionally found in inflammatory tissues. They have been confused with various parasites, algas, calcification, and psammoma bodies. The authors examined Liesegang rings from oral inflammatory cysts by both optical and confocal laser scanning microscopy, and perfomed a three-dimensional reconstruction. These investigations indicate that Liesegang rings are composed of multiple birefringent concentric rings, resulting from a progressive deposition of organic substances, with an unclear pathogenesis. 相似文献
73.
正Myelination,remyelination and demyelination: modeling the in vitro drug discovery pipeline: Demyelination is a multifactorial event occurring in diseases primarily involving myelin forming cells(oligodendrocytes, OLs) and their precursors(oligodendrocyte precursor cells, OPCs) such as multiple sclerosis, but is also involved in the pathology of other central nervous system(CNS) injuries and diseases, such as neonatal encephalopathy, brain and spinal 相似文献
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Dioguardi Mario Alovisi Mario Troiano Giuseppe Caponio Carlo Vito Alberto Baldi Andrea Rocca Giovanni Tommaso Comba Allegra Lo Muzio Lorenzo Scotti Nicola 《Clinical oral investigations》2021,25(12):6597-6621
Clinical Oral Investigations - The survival rate of indirect partial adhesive restorations on vital versus endodontically treated teeth is still controversial. The hypothesis is that there may be a... 相似文献
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Antonio Aloi Adalberto Brunetti Giuseppe Perna Maria Lasalvia Vito Capozzi Raffaele Tommasi 《Biomedical optics express》2015,6(10):4000-4013
An ultrafast investigation is carried out on synthetic eumelanin suspended either in water or in DMSO-methanol. Upon photoexcitation by visible femtosecond pulses, the transient absorption (TA) dynamics of the suspensions are probed in a broad visible spectral range, showing clear nonlinearities. The latter arise from pump-probe interactions that induce the inverse Raman scattering (IRS) effect. We show how eumelanin TA dynamics are modified in proximity of the solvent Stokes and anti-Stokes scattering peaks, demonstrating that IRS affects the sign of TA but not the relaxation times. We compare the results obtained in both suspensions, unveiling the role of the surrounding environment. Eventually, the intrinsic response of synthetic eumelanin to ultrafast photoexcitation is evaluated.OCIS codes: (160.1435) Biomaterials, (320.7150) Ultrafast spectroscopy, (300.6240) Spectroscopy, coherent transient, (190.5890) Scattering, stimulated 相似文献
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Kuusk Teele Biancari Fausto Lane Brian Tobert Conrad Campbell Steven Rimon Uri D’Andrea Vito Mehik Aare Vaarala Markku H. 《BMC urology》2015,15(1):1-4
Epididymal anomalies and patent processus vaginalis are frequently found in boys with cryptorchidism or hydrocele. We conducted this study to evaluate the association between epididymal anomalies and testicular location or patent processus vaginalis in boys with undescended testis or hydrocele. Children undergoing surgery with undescended testis (group A, 136 boys and 162 testes) or communicating hydrocele (group B, 93 boys and 96 testes) were included. Testicular locations and epididymal anomalies were investigated prospectively. An anomalous epididymis was defined as anomalies of epididymal fusion that consisted of loss of continuity between the testis, the epididymis, and the long looping epididymis. The epididymis was considered normal when a normal, firm attachment between the testis, the caput, and the cauda epididymis was present. The mean ages of groups A and B were 24.6 ± 19.7 (range, 8–52 months) and 31.4 ± 20.6 months (range, 10–59 months). The incidence of epididymal anomalies was significantly higher in group A than that in group B (65.4 % vs. 13.5 %, P < 0.001). The incidence of epididymal anomalies in boys with undescended testis was significantly different according to testis location. Epididymal anomalies were observed in 100 %, 91.4 %, and 39.3 % of cases when the testis was located in the abdomen, inguinal canal, and distal to the external inguinal ring, respectively (P < 0.001). We conclude that epididymal anomalies were more frequent in boys with undescended testis than in boys with hydrocele, and that these anomalies were more frequent when undescended testis was at a higher level. These results suggest that testicular location is associated with epididymal anomalies rather than patent processus vaginalis. 相似文献