NF1 mutation drives neuronal activity-dependent initiation of optic glioma.

Neurons have recently emerged as essential cellular constituents of the tumour microenvironment, and their activity has been shown to increase the growth of a diverse number of solid tumours. Although the role of neurons in tumour progression has previously been demonstrated, the importance of neuronal activity to tumour initiation is less clear-particularly in the setting of cancer predisposition syndromes. Fifteen per cent of individuals with the neurofibromatosis 1 (NF1) cancer predisposition syndrome (in which tumours arise in close association with nerves) develop low-grade neoplasms of the optic pathway (known as optic pathway gliomas (OPGs)) during early childhood, raising  the possibility that postnatal light-induced activity of the optic nerve drives tumour initiation.

Performance-Based Financing, Basic Packages of Health Services and User-Fee Exemption Mechanisms: An Analysis of Health-Financing Policy Integration in Three Fragile and Conflict-Affected Settings.

Background: As performance-based financing (PBF) is increasingly implemented across sub-Saharan Africa, some authors have suggested that it could be a 'stepping stone' for health-system strengthening and broad health-financing reforms. However, so far, few studies have looked at whether and how PBF is aligned to and integrated with national health-financing strategies, particularly in fragile and conflict-affected settings.

Objective: This study attempts to address the existing research gap by exploring the role of PBF with reference to: (1) user fees/exemption policies and (2) basic packages of health services and benefit packages in the Central African Republic, Democratic Republic of Congo and Nigeria.

Performance-based financing in three humanitarian settings: principles and pragmatism.

Background: Performance based financing (PBF) has been increasingly implemented across low and middle-income countries, including in fragile and humanitarian settings, which present specific features likely to require adaptation and to influence implementation of any health financing programme. However, the literature has been surprisingly thin in the discussion of how PBF has been adapted to different contexts, and in turn how different contexts may influence PBF. With case studies from three humanitarian settings (northern Nigeria, Central African Republic and South Kivu in the Democratic Republic of Congo), we examine why and how PBF has emerged and has been adapted to those unsettled and dynamic contexts, what the opportunities and challenges have been, and what lessons can be drawn.

Whole tumor RNA-sequencing and deconvolution reveal a clinically-prognostic PTEN/PI3K-regulated glioma transcriptional signature.

The concept that solid tumors are maintained by a productive interplay between neoplastic and non-neoplastic elements has gained traction with the demonstration that stromal fibroblasts and immune system cells dictate cancer development and progression. While less studied, brain tumor (glioma) biology is likewise influenced by non-neoplastic immune system cells (macrophages and microglia) which interact with neoplastic glioma cells to create a unique physiological state (glioma ecosystem) distinct from that found in the normal tissue. To explore this neoplastic ground state, we leveraged several preclinical mouse models of neurofibromatosis type 1 (NF1) optic glioma, a low-grade astrocytoma whose formation and maintenance requires productive interactions between non-neoplastic and neoplastic cells, and employed whole tumor RNA-sequencing and mathematical deconvolution strategies to characterize this low-grade glioma ecosystem as an aggregate of cellular and acellular elements.

Social accountability in primary health care in West and Central Africa: exploring the role of health facility committees.

Background: Social accountability has been emphasised as an important strategy to increase the quality, equity, and responsiveness of health services. In many countries, health facility committees (HFCs) provide the accountability interface between health providers and citizens or users of health services. This article explores the social accountability practices facilitated by HFCs in Benin, Guinea and the Democratic Republic of Congo.