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Novel approaches are needed to enhance antibody-mediated protection against infection and stimulate cell-mediated immune responses to clear influenza virus from the lungs. These strategies for improving vaccine effectiveness will address the public health need for "vaccine prevention of disability" to mitigate the global pressures of aging populations on health and social care systems. © 2020 S. Karger AG, Basel.PURPOSE To determine the retinal and choroidal vessel density in the macular area with OCT angiography (SS-OCTA) in patients affected by retinitis pigmentosa (RP), to compare their data with healthy subjects, and to study a possible morphofunctional correlation by microperimetry (MP1). METHODS 40 eyes of 40 patients affected by RP and 24 eyes of 24 healthy subjects were included in the study. Manually moving down the segmentation line of the SS-OCTA we have evaluated the vessel density for the superficial retinal plexus, deep retinal plexus, choriocapillaris and 3 levels of choroid. RESULTS Linear regression analyses were performed of retinal structure and function. No significant correlation was detected in any case (R square = 0, p>0.05). A comparison between RP and healthy control revealed a significant reduction in SS-OCTA mean capillary density in the RP group (p=0.0011). This relationship was consistent across vascular layers (p=0.2413). A significant association between the capillary density of the various vascular complexes was detected within individual eyes (p less then 0.0001). CONCLUSIONS This study represents the first study comparing MP1 and SS-OCTA data with the largest cohort of patients. RP patients showed a reduction in both the retinal and choroidal vascular network in the macular area compared to healthy subjects. © 2020 S. Karger AG, Basel.Older people have reduced immune responses to infection and vaccination. B cell activation is key for the efficacy of the vaccine response, but there are several age-related changes in B cells which may contribute to the loss of vaccine efficacy. Different subpopulations of B cells have different functions and phenotypes. These populations can change as we age; older people have been shown to have fewer "IgM memory" cells, regulatory B cells and plasma cells and more IgD-CD27- "double-negative" and "age-related B cells." While the overall quantity of antibody in the blood does not change, the quality of the B cell response changes; producing less specific antibodies upon challenge and more autoreactive antibodies. This could be due to changes in selection pressures, as has been demonstrated by repertoire sequencing of different subsets of B cells at different ages. Other changes in antibody repertoire are seen, including greater levels of IgG2 in older people and altered IgG1 IGHV gene usage. Since B cells rely on their environment for efficient responses, some of these changes may be due to age-related changes in accessory cells/signals. Other changes appear to be intrinsic to older/aged B cells themselves, such as their tendency to produce greater levels of inflammatory cytokines. © 2020 S. Karger AG, Basel.Immunization strategies for the elderly are frequently perceived as comprising only vaccines against influenza, Streptococcus pneumoniae, and herpes zoster. However, besides these vaccines, which are recommended specifically for the elderly, regular booster vaccinations against tetanus, diphtheria, and in some cases pertussis and polio, are recommended in many countries for adults including the elderly. Vaccination recommendations for adults differ greatly between individual countries and coverage data are scarce. A substantial proportion of adults, and particularly of the older age groups, do not have protective antibody concentrations against diphtheria, whereas tetanus-specific antibody concentrations are generally higher. Protection against pertussis is unsatisfactory in all adults, and development of improved vaccines is ongoing. Future vaccination strategies should include regular and well-documented booster shots throughout life, as post-booster antibody concentrations correlate with pre-booster antibody concentrations. © 2020 S. Karger AG, Basel.Vaccine development has traditionally been driven by the need to prevent high numbers of childhood deaths due to infectious disease. With few exceptions, vaccines for adults are the same as vaccines for infants, although it has long been apparent that they become less effective as age increases. It is only in the last few years that concerted efforts have commenced to develop life-long vaccination strategies through into older age. Impressive progress has been made in the field of vaccine technologies which, when they will be applied to vaccination of older adults, could change the landscape for disease prevention in this age group. The recently licensed adjuvanted herpes zoster vaccine shows that immunosenescence need not be a barrier to highly effective vaccination, and that highly effective vaccines for older adults can be achieved with good vaccine design. MLi2 One of the greatest public health challenges of the 21st century is ensuring the health and well-being of the aged. New or improved vaccines targeting pathogens with a high disease burden in older adults have the potential to major contributions to the longevity and productivity of the older aged population. © 2020 S. Karger AG, Basel.An angiosarcomatous component in gliosarcoma may be associated with an increased intraoperative hemorrhagic risk and preoperative diagnostic challenge. We report a unique case of gliosarcoma with an angiosarcomatous component in a 61-year-old man. His brain MRI demonstrated a well-demarcated right occipital tumor with multiple flow voids and rim-like enhancement as well as intratumoral strip and nodular enhancements. He underwent a craniotomy for tumor resection. Intraoperatively, significant tumor hemorrhage required greater efforts to control intraoperative bleeding and to maintain hemostasis. Pathological examination of the tumor revealed alternating gliomatous and sarcomatous/angiosarcomatous components with intratumoral hemorrhage. He was postoperatively treated with chemoradiation. The tumor recurred at 9 months, for which the second resection was performed with similarly greater efforts to achieve hemostasis. The recurrent tumor was pathologically similar despite treatment-associated changes. Awareness of this angiosarcomatous component in gliosarcoma with the hemorrhagic risk is important for both the preoperative diagnosis and surgical management.
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