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K. Dahan V. Audard F. Roudot-Thoraval D. Desvaux M. Abtahi H. Mansour M. Kumal P. Lang P. Grimbert 《American journal of transplantation》2006,6(7):1725-1730
The clinical outcome and appropriate management for patients showing 'borderline changes' on allograft biopsy after renal transplantation is still controversial. In an attempt to identify predictive factors of clinical outcome of patients with such lesions, we reviewed the clinical course of 91 patients with borderline changes. Multivariate analysis revealed significant and independent effects of histological stage (i + t < or = or > 2) and time to borderline changes (< or = or > 3 months after transplant) on serum creatinine levels at 1 year from borderline changes episodes (respectively, p = 0.04 and p = 0.02) and only a significant effect of time to borderline changes on serum creatinine levels at 2 years (p = 0.005). Renal function at 1 year and 2 years as 5- and 8-year graft survival were not significantly different in the group of patients treated with antirejection therapy (T group, n = 49) compared with the untreated group (UT group, n = 42). This study strongly suggests that borderline changes with histological score (i + t) > 2 and late episodes of borderline changes should be considered to be of poor prognosis. 相似文献
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J Oral Pathol Med (2012) 41 : 494–499 Background: Bisphosphonate‐related osteonecrosis of the jaw was first described to start with sterile osteocyte death, similar to osteonecrosis in other parts of the skeleton. The typical chronic osteomyelitis was thought to develop when the dead bone was exposed to the oral cavity. An alternative explanation would be that the chronic osteomyelitis is a result of a bisphosphonate‐related inability of infected bony lesions to heal. We tested the hypothesis that primary osteocyte death is not necessary for the development of jaw osteonecrosis. Material and methods: Forty rats were randomly allocated to four groups of 10. All animals underwent unilateral molar extraction and received the following drug treatments: Group I, controls with no drug treatment; Group II, 200 μg/kg per day alendronate; Groups III and IV, 200 μg/kg per day alendronate and 1 mg/kg of dexamethasone. All rats were euthanized after 14 days. Presence of osteonecrosis was determined by clinical and histological observations for groups I–III. For group IV, osteocyte viability at the contralateral uninjured site was examined using lactate dehydrogenase histochemistry (LDH). Results: All animals in the alendronate plus dexamethasone groups developed large ONJ‐like lesions. Lactate dehydrogenase staining showed viable osteocytes in the contralateral jaw with no tooth extraction. No signs of osteonecosis were seen in the other groups. Conclusion: Bisphosphonates and dexamethasone caused no osteocyte death in uninjured bone, but large ONJ‐like lesions after tooth extraction. Osteonecrosis of the jaw appears to arise first after the bone has been exposed. Possibly, bisphosphonates hamper the necessary resorption of bone that has become altered because of infection. 相似文献
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Zahra Mojtahedi Bijan Khademi Seyed Basir Hashemi Seyed Mohammad Bagher Abtahi Mohammad Ali Ghasemi Mohammad Javad Fattahi Abbas Ghaderi 《Pathology oncology research : POR》2011,17(1):7-10
Inflammation has been linked to various steps in tumorigenesis. Interleukin (IL)-6 and IL-18 are two inflammatory cytokines
whose serum concentrations are elevated in several types of cancer, including head and neck squamous cell carcinoma (HNSCC)
in some studies. This study was designed to analyze the serum concentrations of these cytokines in Iranian HNSCC patients.
Serum IL-6 and IL-18 concentrations were assayed by ELISA commercial kits in 65 untreated patients and 20 healthy volunteers.
Serum IL-6 concentration was significantly increased in patients compared to healthy individuals (p < 0.000). IL-6 concentration increased as the tumor stage progressed, and a significant difference appeared between stage
IV vs. stage I/II/III (p = 0.03) disease. Although serum IL-18 concentration was higher in patients than in healthy individuals, the difference was
not statistically significant (p = 0.06). Moreover, there was no association between serum IL-18 concentration and tumor stage (p = 0.47). A significant difference was observed in serum IL-18 concentration according to the gender with higher IL-18 concentration
in male patients (p = 0.01). In conclusion, serum concentration of IL-6 might correlate with the stage of tumor progression in Iranian HNSCC
patients. Further studies with larger numbers of patients are required to exclude the possible minor correlation of serum
IL-18 concentration with tumor stage. 相似文献
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Histamine in doses of 25, 50, 100 and 200 mg/kg significantly inhibited mitotic activity of the stomach, duodenum and colon of rats. With the above doses this effect is not dose dependent. However, only the highest dose produced acute gastric mucosal ulceration. It is suggested that decreased mitotic activity is not causally related to ulcer provocation. 相似文献
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This is a report of long-term results and complications in 62 patients. Closed tibial osteotomy, direct tibial distraction, and simultaneous indirect proximal fibular epiphyseal distraction are the essential features of this new technique. Fibular osteotomy and complications from tibiofibular synostosis are eliminated. Bone graft and plating procedures have been proven to be unnecessary. The patient is ambulated immediately. Hospitalization has been reduced to a few days. 相似文献