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AIMS: Hypothalamic-pituitary axis (HPA) dysfunction is a sequela of cranial radiotherapy. The purpose of this study was to use endocrine data from existing publications to characterise the baseline endocrine status, the effects of radiotherapy on the HPA during the first follow-up year and the time dependence of radiation-induced HPA dysfunction in patients treated with radiotherapy for non-pituitary intracranial neoplasms. MATERIALS AND METHODS: A systematic search of databases was carried out for articles that reported the results of endocrine testing for patients aged 16 years and older who were treated with neurosurgery for non-pituitary intracranial neoplasms or radiotherapy for nasopharyngeal neoplasms. To analyse the radiotherapy-related changes in hormone levels over time, long-term prospective endocrine data from nasopharyngeal studies were normalised to baseline hormone data and fitted to an exponential decay model. This process was repeated with normalisation to year 1 hormone data. RESULTS: Eight unique articles met eligibility criteria. HPA dysfunction occurred in 21.6-64.7% of patients who were assessed for endocrinopathies following neurosurgery. Studies on the early effects of radiotherapy on nasopharyngeal patients showed statistically significant changes in growth hormone, luteinizing hormone and follicle stimulating hormone levels during the first year of follow-up. Time dependence modelling showed that normalisation to year 1 hormone levels yield exponential equations with stronger measures of goodness of fit. CONCLUSION: HPA dysfunction in patients treated for non-pituitary intracranial neoplasms is probably a result of both neurosurgery and radiotherapy treatments. Although statistically significant endocrine changes can occur during this first year of follow-up, those documented at year 1 may be more predictive of subsequent HPA dysfunction.

Neisseria have been isolated from or detected in a wide range of animals, from nonhuman primates and felids to a rodent, the guinea pig (Liu et al., 2015). By means of selective culture, biochemical testing, Gram staining and PCR screening for the Neisseria-specific Internal Transcribed Spacer region of the rRNA operon, we isolated four strains of Neisseria from the oral cavity of the wild house mouse, Mus musculus subspecies domesticus. The isolates are highly related and form a separate clade in the genus, as judged by rMLST and core gene tree analyses. One isolate, provisionally named Neisseria musculi sp. nov. (type strain AP2031T = DSM 101846T = CCUG 68283T = LMG 29261T), was studied further. AP2031/N. musculi grows well in vitro. It is naturally competent, taking up DNA in a DUS and pilT-dependent manner, and is amenable to genetic manipulation. These and other genomic attributes of N. musculi make it an ideal candidate for use in developing a mouse model for studying Neisseria-host interactions.