Heterologous Immunity of Virus-Specific T Cells Leading to Alloreactivity: Possible Implications for Solid Organ Transplantation

Exposure of the adaptive immune system to a pathogen can result in the activation and expansion of T cells capable of recognizing not only the specific antigen but also different unrelated antigens, a process which is commonly referred to as heterologous immunity. While such cross-reactivity is favourable in amplifying protective immune responses to pathogens, induction of T cell-mediated heterologous immune responses to allo-antigens in the setting of solid organ transplantation can potentially lead to allograft rejection. In this review, we provide an overview of murine and human studies investigating the incidence and functional properties of virus-specific memory T cells cross-reacting with allo-antigens and discuss their potential relevance in the context of solid organ transplantation.     

Successful living-related liver transplantation in a child with familial yellow nail syndrome and fulminant hepatic failure: report of a case

An 11-yr-old boy with familial YNS and FHF and who underwent LRLT is presented. LRLT was performed from his father with YNS. The findings of hepatic failure resolved immediately after LRLT, but severe respiratory complications and chylous ascites were observed during the follow-up. At 12 months after successful LT, the patient has good graft function, but findings of YNS including chronic cough, lymphedema and yellow nails are still present. To the best of our knowledge, this is the first case of YNS who underwent LRLT for FHF.     

Study supports the introduction of early medical abortion in Turkey

In Turkey, there is an unmet need for induced abortion services provided by the public health services, especially in rural and semi-urban areas. The objective of this clinical study was to show that early medical abortion could be introduced safely in Turkey to improve women's access to services. In the study, women aged 18-49 up to 56 days of pregnancy were offered a choice between medical abortion with 200 mg mifepristone followed by 400 mcg oral misoprostol and MVA with local anaesthesia. 209 chose medical and 149 surgical abortion. Data from an additional 112 women were collected to obtain a similar number of surgical abortion cases. Women's preference for and satisfaction with the chosen method, side effects and complications up to the 14-day follow-up visit were recorded. 75% of women who chose medical abortion opted for home use of misoprostol. Pain with medical abortion on average lasted 3.6 +/- 3.0 days and with surgical abortion 3.7 +/- 2.9 days. 90% of women who had medical abortion said they would prefer it again compared to 70% of those having surgical abortion. There were 1.4% ongoing pregnancies in the medical abortion group and none in the surgical group. Provider training and familiarity with medical abortion are crucial. The high incomplete abortion rate indicates that the dose and regimen of misoprostol should be reconsidered. The findings support the introduction of early medical abortion in Turkey.     

Vitamin D insufficiency in a boy with obsessive–compulsive disorder

Vitamin D deficiency not only causes low bone mass but also may lead to neuropsychiatric disorders. In the present case, vitamin D supplementation reduced obsessive–compulsive disorder (OCD) symptoms associated with streptococcal infection in a 7‐year‐old boy. Sudden onset of symptoms, including excessive hand washing and fear of touching anything, had occurred 1 month before presentation. Although there are few studies on a possible causal relationship between vitamin D and neuropsychiatric disorders, the present report; together with previous data, suggest an etiological role of vitamin D‐related immune processes.     

Antifungal Activity of Propolis Against Yeasts Isolated From Blood Culture: In Vitro Evaluation

Background: Due to the failure of available antifungal agents in the treatment of candidemia and the toxic activities of these drugs, a lot of researches are being conducted to develop new nontoxic and effective antifungal agents for optimal control of fungal pathogens. The aim of this study is to evaluate the in vitro antifungal activity of propolis against yeasts isolated from the blood cultures of intensive care unit patients. Methods: Seventy‐six strains were included in this study. The in vitro antifungal activity of propolis, fluconazole (FLU), and itraconazole (ITR) was investigated by the microdilution broth methods (CLSI guidelines M27‐A3 for yeast). The propolis sample was collected from Kayseri, Turkey. Results: Of the 76 isolates, 33 were identified as Candida albicans while 37 were C. parapsilosis, three were C. tropicalis, and three were identified as C. glabrata. The geometric mean range for MIC (μg/ml) with regard to all isolates was 0.077 to 3 μg/ml for FLU and ITR, and 0.375 to 0.70 μg/ml for propolis. It was shown that propolis had significant antifungal activity against all Candida strains and the MIC range of propolis was determined as 0185 to 3 μg/ml. Conclusion: This study demonstrated that propolis had significant antifungal activity against yeasts isolated from blood culture compared with FLU and ITR. The propolis MIC in azole‐resistant strains such as C. glabrata was found lower than the FLU MIC.     

Panuveitis associated with multiple sclerosis complicated by cerebral venous thrombosis

Purpose: To report cerebral venous thrombosis as a complication of intravenous corticosteroid treatment in a patient with multiple sclerosis. Method: A case report. A 44-year-old woman with a previous diagnosis of multiple sclerosis presented with panuveitis and retinal perivasculitis. Intravenous pulse corticosteroid therapy was given for three days. Results: The panuveitis and retinal periphlebitis began to resolve within one week; however, ten days after the last corticosteroid dose, the patient was hospitalized with the diagnosis of cerebral venous thrombosis. Conclusion: Although intravenous corticosteroid treatment for uveitis associated with multiple sclerosis can be very helpful, the patient should be monitored closely for systemic side effects.     

Retinitis pigmentosa associated with peripheral sea fan neovascularization

PURPOSE: To describe a case with retinitis pigmentosa associated with sea fan type retinal neovascularization. METHODS: Complete ocular examination including fluorescein angiography was performed in a 9-year-old girl. RESULTS: Ophthalmoscopically, in addition to arteriolar narrowing and bone corpuscular pigmentation of both retinae, a vascular lesion with surrounding intraretinal exudation was noted in the upper equatorial region of the right eye. On fluorescein angiography, the lesion stained in the form of a sea fan neovascularization. CONCLUSION: Sea fan type of neovascularization can be seen in association with retinitis pigmentosa. Fluorescein angiography is important in identifying the exact nature of such a lesion.     

Does familial Mediterranean fever affect cognitive function in children? Electrophysiological preliminary study

Objectives: Familial Mediterranean fever (FMF) is a periodic autoinflammatory disease with subclinical inflammation occurring between attacks. The aim of the study was to prospectively evaluate the cognitive function of children diagnosed with FMF that were under colchicine therapy and compare them with healthy controls through electrophysiologically event-related potentials (ERPs) study. Methods: Twelve children with FMF and 12 healthy controls were included in the study. During the electroencephalography recordings, all participants were instructed to discriminate rare stimuli (target stimuli) from frequent stimuli (standard stimuli) by pressing a botton on a mouse immediately following the target stimulus. P300, the cognitive component of ERP, was obtained in response to target stimuli and its amplitude and latency were measured. Results: The amplitude of the P300 of the FMF patients was higher and the latencies of the P300 of the FMF patients were shorter than the amplitudes and latencies of control patients, respectively. The difference between the groups was statistically significant for amplitude but not for latency. Conclusions: Cognitive processing reflecting allocation of attention and visual processing speed seems not to be negatively affected in FMF patients with homozygous M694V mutations undergoing colchicine treatment. As this study is unique in its evaluation of the cognitive function of children with FMF, these findings may be helpful for counseling families and patients affected by the condition.     

An analysis of ranibizumab treatment and visual outcomes in real-world settings: the UNCOVER study

Graefe's Archive for Clinical and Experimental Ophthalmology - To describe intravitreal ranibizumab treatment frequency, clinical monitoring, and visual outcomes (including mean central retinal...