1.Local recurrence of a parosteal osteosarcoma 21 years after incomplete resection.
Andrés COMBALIA ; Ernesto MUÑOZ-MAHAMUD ; Antonio PALACÍN ; Jaume POMÉS ; Vicente LÓPEZ
Chinese Journal of Cancer 2011;30(12):861-866
Parosteal osteosarcoma (POS) is the most common form of surface osteosarcoma. Its symptoms are insidious and its duration prior to diagnosis is considerably longer than that of other types of osteosarcoma. We report a case of POS with a growing mass but no evidence of metastasis. This tumor, which was diagnosed as calcified hematoma with benign characteristics, was incompletely resected in our hospital 21 years before the diagnosis of recurrence. The patient underwent a wide en bloc resection in our hospital and was free of symptoms, with no signs of tumor recurrence or metastasis during a 53-month follow-up.
Adult
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Bone Neoplasms
;
diagnosis
;
pathology
;
surgery
;
Diagnostic Errors
;
Follow-Up Studies
;
Humans
;
Humerus
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Magnetic Resonance Imaging
;
Male
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Neoplasm Recurrence, Local
;
Osteosarcoma, Juxtacortical
;
diagnosis
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pathology
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surgery
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Radiopharmaceuticals
;
Technetium Tc 99m Medronate
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Tomography, Emission-Computed
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Tomography, X-Ray Computed
2.Antioxidant effects of D-004, a lipid extract from the Roystonea regia fruit, on the plasma of healthy men.
Ernesto LÓPEZ ; Vivian MOLINA ; José ILLNAIT ; Ambar OYARZÁBAL ; Lilia C FERNÁNDEZ ; Rosa MÁS ; Rafael GÁMEZ ; Julio C FERNÁNDEZ ; Sonia JIMÉNEZ ; Meilis MESA ; Ivón HOLLANDS ; Sarahí MENDOZA
Asian Journal of Andrology 2009;11(3):385-392
The aim of this study was to conduct a randomized, double-blind and placebo-controlled study to investigate the effects of D-004, a lipid extract of the Roystonea regia fruit that prevents testosterone- and phenylepinephrine-induced prostate hyperplasia in rodents, on plasma oxidative markers in healthy men. We enrolled male volunteers (20-55 years) in good health and without lower urinary tract symptoms. Thirty-four eligible participants were randomized to placebo or D-004 (320 mg) capsules administered daily for 6 weeks. An interim check-up and a final visit were conducted after 3 and 6 weeks of therapy, respectively. Physical examinations were performed at each visit, and laboratory tests were performed at baseline and at treatment completion. Oxidative variables included plasma malondialdehyde (MDA), total hydroxyperoxides (TOH), sulphydryl (SH) groups and total antioxidant status (TAS). We assessed treatment compliance and addressed adverse experiences (AEs) at weeks 3 and 6. At week 6, with D-004, the mean reductions of plasma MDA (26.7%), TOH (18.8%) and SH groups (31.6%), and the mean increase of TAS (35.3%) were significantly different from those of placebo (P<0.001 for plasma TAS, P<0.0001 for all other comparisons). D-004 did not differ from the placebo in safety indicators. There were two withdrawals (both in the D-004 group), with one due to dyspepsia (the only AE during the trial). In conclusion, D-004 displayed antioxidant effects on plasma oxidative markers in healthy men, which was consistent with findings from laboratory experimental studies.
Adult
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Antioxidants
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administration & dosage
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adverse effects
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Arecaceae
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Biomarkers
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blood
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Humans
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Lipid Peroxidation
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drug effects
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Lipids
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Male
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Middle Aged
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Oxidative Stress
;
drug effects
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Placebos
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Plant Extracts
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administration & dosage
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adverse effects
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Prostatic Hyperplasia
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drug therapy
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metabolism
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Young Adult
3.Microshear bond strength of dual-cure resin cement in zirconia after different cleaning techniques: an in vitro study
Katherine Joselyn ATOCHE-SOCOLA ; Luis Ernesto ARRIOLA-GUILLÉN ; Ana Isabel LÓPEZ-FLORES ; Isadora Martini GARCIA ; Gustavo HUERTAS-MOGOLLÓN ; Fabrício Mezzomo COLLARES ; Vicente Castelo BRANCO LEITUNE
The Journal of Advanced Prosthodontics 2021;13(4):237-245
PURPOSE:
This study aimed to compare the microshear bond strength (µSBS) of dual-cure resin cement in CAD-CAM zirconia after different cleaning techniques.
MATERIALS AND METHODS:
Fifty discs of zirconia-based ceramic from Ivoclar Vivadent were embedded in acrylic resin. The discs were divided into five groups according to the cleaning
methods:
used: Group 1: drying with spraying + sandblasting with Al2O3 ; Group 2: washed with water and dried with spraying + sandblasting with Al2O 3 ; Group 3: washed with distilled water and dried with spraying + sandblasting with Al2O3 + zirconium oxide (Ivoclean); Group 4: washed with distilled water and dried with spraying + sandblasting with Al2O3 + potassium hydroxide (Zirclean); and Group 5: washed with distilled water and dried with spraying + sandblasting with Al2O3 + 1% NaClO. All of the groups were contaminated with artificial saliva for 1 minute and then cleaned. Statistical analyses were performed using ANOVA and Tukey’s tests.
RESULTS:
There were statistically significant differences among all groups for µSBS (P < .05). The group treated with zirconium oxide (Group 3) showed the highest µSBS (18.75 ± 0.23 MPa).
CONCLUSION
When applied to zirconia, the cleaning methods affected the bonding with resin cement differently.
4.Microshear bond strength of dual-cure resin cement in zirconia after different cleaning techniques: an in vitro study
Katherine Joselyn ATOCHE-SOCOLA ; Luis Ernesto ARRIOLA-GUILLÉN ; Ana Isabel LÓPEZ-FLORES ; Isadora Martini GARCIA ; Gustavo HUERTAS-MOGOLLÓN ; Fabrício Mezzomo COLLARES ; Vicente Castelo BRANCO LEITUNE
The Journal of Advanced Prosthodontics 2021;13(4):237-245
PURPOSE:
This study aimed to compare the microshear bond strength (µSBS) of dual-cure resin cement in CAD-CAM zirconia after different cleaning techniques.
MATERIALS AND METHODS:
Fifty discs of zirconia-based ceramic from Ivoclar Vivadent were embedded in acrylic resin. The discs were divided into five groups according to the cleaning
methods:
used: Group 1: drying with spraying + sandblasting with Al2O3 ; Group 2: washed with water and dried with spraying + sandblasting with Al2O 3 ; Group 3: washed with distilled water and dried with spraying + sandblasting with Al2O3 + zirconium oxide (Ivoclean); Group 4: washed with distilled water and dried with spraying + sandblasting with Al2O3 + potassium hydroxide (Zirclean); and Group 5: washed with distilled water and dried with spraying + sandblasting with Al2O3 + 1% NaClO. All of the groups were contaminated with artificial saliva for 1 minute and then cleaned. Statistical analyses were performed using ANOVA and Tukey’s tests.
RESULTS:
There were statistically significant differences among all groups for µSBS (P < .05). The group treated with zirconium oxide (Group 3) showed the highest µSBS (18.75 ± 0.23 MPa).
CONCLUSION
When applied to zirconia, the cleaning methods affected the bonding with resin cement differently.
5.The Value of Transcranial Doppler Sonography in Hyperperfusion Syndrome after Carotid Artery Stenting: A Nationwide Prospective Study
Francisco MONICHE ; Irene ESCUDERO-MARTÍNEZ ; Fernando MANCHA ; Alejandro TOMASELLO ; Marc RIBÓ ; Fernando DELGADO-ACOSTA ; Juán José OCHOA ; Joaquín GIL ; Rosario GIL ; Montserrat GONZÁLEZ-DELGADO ; Eduardo MURIAS ; Alain LUNA ; Alberto GIL ; Sonia MOSTEIRO ; María Dolores FERNÁNDEZ-COUTO ; Luis Fernández de ALARCÓN ; José M. RAMÍREZ-MORENO ; Joaquín ZAMARRO ; Guillermo PARRILLA ; José L. CANIEGO ; Gustavo ZAPATA-WAINBERG ; Andrés GONZÁLEZ-MANDLY ; José A. de las HERAS ; Luis LÓPEZ-MESONERO ; Joaquín ORTEGA ; Juan F. ARENILLAS ; Ernesto GARCÍA ; Pedro P. ALCÁZAR ; Elena ZAPATA-ARRIAZA ; Asier de ALBÓNIGA-CHINDURZA ; Juan Antonio CABEZAS ; Pilar ALGABA ; Aurelio CAYUELA ; Joan MONTANER ; Alejandro González GARCÍA
Journal of Stroke 2020;22(2):254-257