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排序方式: 共有219条查询结果,搜索用时 62 毫秒
1.
B.D.S. M.S.Huan-Kong Chang B.D.S. H.D.D. M.S. Ph.D.Omar Zidan D.D.S. M.S.Ignatius K. Lee M.Sc. Ph.D.Orlando Gomez-Marin 《The Journal of prosthetic dentistry》1991,65(6):778-781
A clinical recall program was initiated at the University of Minnesota to evaluate the longevity and factors affecting longevity of resin-bonded fixed partial dentures (FPDs). Of the 49 resin-bonded FPDs evaluated in the clinic, 43 were acid-etched metal, resin-bonded FPDs, four were combinations of resin-bonded and conventional FPDs, and two were composite resin pontics. None of the combination FPDs and one of the two composite resin pontics were judged as failed at the examination. Of the 43 acid-etched metal resin-bonded FPDs, 15 were found to be debonded (failure rate = 34.9%). The average length of service for the 43 FPDs was 47.3 months. The average time of placement to debondment was 33 months for the 15 debonded FPDs. The failure rate for maxillary FPDs and FPDs with two retainers were significantly lower than the failure rate for mandibular FPDs and FPDs with more than two retainers (p greater than 0.05). The clinical significance of the present study was discussed. 相似文献
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Shin Junghee Jenny Par-Young Jennefer Unlu Serhan McNamara Andrew Park Hong-Jai Shin Min Sun Gee Renelle J. Doyle Hester Afinogenova Yuliya Zidan Elena Kwah Jason Russo Armand Mamula Mark Hsu Florence Ida Catanzaro Jason Racke Michael Bucala Richard Wilen Craig Kang Insoo 《Journal of clinical immunology》2022,42(6):1137-1150
Journal of Clinical Immunology - Immune responses to coronavirus disease 2019 (COVID-19) mRNA vaccines in primary antibody deficiencies (PADs) are largely unknown. We investigated antibody and CD4+... 相似文献
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M. El‐Komy I. Amin A. Zidan D. Kadry O.A. Zeid O. Shaker 《Journal of the European Academy of Dermatology and Venereology》2011,25(11):1288-1294
Background The pathogenesis of psoriasis is thought to depend on the activation of immune cells and their secreted cytokines, chemokines and growth factors like IGF‐1 which may contribute to the epidermal hyperplasia of psoriasis. Treatment of psoriasis with PUVA and methotrexate are associated with clinical improvement and decrease in epidermal hyperplasia. Objective To examine the effects of PUVA and methotrexate therapy on IGF‐1 expression in psoriatic plaques and whether this change correlates with clinical response. Methods For 24 psoriatic patients, the PASI score and levels of lesional IGF‐1 and its mRNA were determined by RT‐PCR before and after treatment with either methotrexate or PUVA. Skin biopsies from 12 healthy volunteers served as control for IGF‐1 levels in normal skin. Results Lesional skin of psoriatic patients showed a statistically significant elevation in IGF‐1 and its mRNA levels in comparison to control (P = 0.0001). Both methotrexate and PUVA treatment were associated with a significant decrease in both PASI scores and lesional IGF‐1 after 10 month treatment. Conclusion Both methotrexate and PUVA therapy for psoriasis are associated with a decrease in PASI score and IGF‐1. The IGF‐1 down‐regulation may possibly be a consequence of the decrease in cytokines and inflammatory cellular infiltrate that occur following treatment with either modalities or due to their effect on local fibroblast activity and proliferation. 相似文献
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Hussein OA Gefen Y Zidan JM Karochero EY Luder AS Assy NN Sror ES Aviram MY 《Clinica chimica acta; international journal of clinical chemistry》2007,377(1-2):114-118
AIM: To investigate whether levels of blood HbA1c in diabetic patients are associated with susceptibility of LDL to oxidation. METHODS: LDL was separated from blood of 40 diabetic patients with known blood glucose and HbA1c levels. The tendency to undergo lipid peroxidation was assessed via lag time required for initiation of LDL oxidation. HbA1c formation was measured in vitro following incubation of red blood cell (RBC) hemolysate for 3 months with increasing concentrations of glucose in the absence or presence of LDL or oxidized LDL. RESULTS: Lag time for copper-induced LDL oxidation was twice as long in normal subjects compared to diabetic patients. Correlation analyses between LDL oxidation lag time and HbA1c blood levels revealed an R value of 0.74. Incubation of RBC hemolysate with high glucose concentration (up to 400 mg/dl) resulted in increased blood HbA1c concentration by up to 107%. Addition of LDL to this hemolysate over a period of 3 months resulted in LDL oxidation and an increase in HbA1c levels by up to 168%. Similarly, addition of oxidized LDL to the hemolysate increased HbA1c by up to 240%. CONCLUSIONS: Increased tendency of LDL to undergo lipid peroxidation in diabetic patients contributes to increased levels of blood HbA1c, mainly in those with HbA1c<7.3. 相似文献
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This prospective longitudinal study investigated depressive symptoms and its association with students' demographic, academic, and health factors in undergraduate students of pharmacy in Syria. Students attending any year (1st to 5th year) were assessed in the first semester (time 1) and in the second semester (time 2). An academic year comprises two semesters of 16 weeks each. Data for 450 students were analyzed at time 1, and 262 students were assessed at the two time points. Our results showed that most of the students experienced depressive symptoms, with a substantial percentage presenting moderate to severe levels of symptoms (35% or 450 students at time 1; 23% or 262 students at time 2). Across the two semesters, a significant decrease in depressive symptoms was observed for students with complete data at the two time points. Depressive symptoms at time 2 increased significantly with increasing depressive scores at time 1 and decreasing students' expectations about their academic performance. Our results support the clear need for dynamic, full-time, and accessible psychological services at the university to promote and assess mental health and to deliver psychological interventions to students at need. 相似文献