The retrotrapezoid nucleus (RTN) is a group of neurons in the rostral medulla, defined here as Phox2b-, Vglut2-, neurokinin1 receptor-, and Atoh1-expressing cells in the parafacial region, which have been proposed to function both as generators of respiratory rhythm and as central respiratory chemoreceptors. The present study was undertaken to assess these two putative functions using genetic tools. We generated two conditional Phox2b mutations, which target different subsets of Phox2b-expressing cells, but have in common a massive depletion of RTN neurons. In both conditional mutants as well as in the previously described Phox2b 27Ala mutants, in which the RTN is also compromised, the respiratory-like rhythmic activity normally seen in the parafacial region of fetal brainstem preparations was completely abrogated. Rhythmic motor bursts were recorded from the phrenic nerve roots in the mutants, but their frequency was markedly reduced. Both the rhythmic activity in the RTN region and the phrenic nerve discharges responded to a low pH challenge in control, but not in the mutant embryos. Together, our results provide genetic evidence for the essential role of the Phox2b-expressing RTN neurons both in establishing a normal respiratory rhythm before birth and in providing chemosensory drive.
Amplification at the long arm of chromosome 8 occurs in a large fraction of breast and prostate cancers. To clone the target genes for this amplification, we used suppression subtraction hybridization to identify overexpressed genes in the breast cancer cell line SK-Br-3, which harbors amplification at 8q (8q21 and 8q23-q24). A differentially expressed gene identified by SSH, the p40 subunit of eukaryotic translation initiation factor 3 (eIF3), was localized to 8q23 and found to be highly amplified and overexpressed in the breast and prostate cancer cell lines studied. High-level amplification of eIF3-p40 was found in 30% of hormone-refractory prostate tumors and in 18% of untreated primary breast tumors. In the vast majority of the cases, p40 and c-myc were amplified with equal copy numbers. Tumors with higher copy numbers of p40 than c-myc were also found. Expression of p40 mRNA was analyzed with in situ hybridization. The amplification of eIF3-p40 gene was associated with overexpression of its mRNA, as expected for a functional target gene of the amplification. These results imply that genomic aberrations of translation initiation factors, such as eIF3-p40, may contribute to the pathogenesis of breast and prostate cancer.
The preservative Kathon CG is a commercial preparation, consisting of 2 active ingredients and other components. 28 patients with contact allergy to Kathon CG participated in a study in which patch testing was performed with serial dilutions, and with 5 chromatographically separated fractions. All reacted to fraction IV, and 2 patients also to fraction II. Mass spectrometry and nuclear magnetic resonance spectrometry identified fraction II and IV to be the active ingredients; 2-methyl-4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one.
Impaired mental health has been associated with an increased need for dental care. Population surveys have indicated that people with enduring mental health problems make less frequent planned visits to the dentist and report a greater number of missing teeth than the general population. The study aims to examine oral health status, attendance to dental care, and medication in an outpatient psychiatric sample. A descriptive study combining a structured interview with a visual oral examination carried out in 113 outpatients under psychiatric care. Dental health was described in terms of sound, missing and/or filled teeth, and showed a relation between these categories and types of psychiatric diagnosis, age and numbers of antidepressant and neuroleptic drugs. Oral hygiene was found to be more neglected among men and in patients with the diagnosis of schizophrenia. The need of dental treatment was widespread, although regular dental visits were commonly reported. In order to maintain good oral health, regular dental check-ups should be encouraged for patients under psychiatric care. Further studies are required to reveal contributory causes for/to decreased oral health. The difficulty such individuals have in maintaining additional self-efficacy raises questions about the necessity for oral health interventions in outpatient psychiatric services.
BackgroundResearch suggests that registered nurses (RNs) do not feel adequately prepared to support patients with intellectual disability disorder (IDD). This is unsurprising, as few European health sciences curricula include undergraduate and graduate training courses in IDD. As RNs are often in the front line of care, eliciting in-depth knowledge about how they experience nursing this group of patients is vital. Our aim in this study was to develop a conceptual understanding about RNs’ experiences of nursing patients with IDD.MethodWe undertook a systematic review and meta-ethnography to synthesise qualitative research studies found in PubMed, CINAHL, PsycINFO, ERIC databases and by manual searching to identify additional studies. We condensed translatable second-order constructs, and developed an idiomatic translation. Finally, we formulated line of argument (LOA) syntheses to capture the core of the idiomatic translations.ResultsWe included eighteen published studies from eight countries involving 190 RNs. The RNs’ experience of nursing patients with IDD were reflected in 14 LOAs. Six of these reflected a tentatively more distinctive and at times unique conceptualisation of RNs’ experience of nursing this group of patients. The remaining eight LOAs represented a conceptualisation of nursing per se, a conceptualisation of nursing that was interpreted as a universal experience regardless of context and patient group.ConclusionLack of awareness and knowledge are likely breeding grounds for the ‘otherness’ that still surrounds this group of patients. In encounters between patients and RNs, focusing on the person behind the disability label could be one way to secure relevant nursing care for patients with IDD. Undertaking appropriate under- and postgraduate education alongside the implementation of nursing models focusing on patient-centred care would help RNs in reducing the health and care inequalities this group of patients still face.Trial registrationPROSPERO 2017: CRD42017077703.Electronic supplementary materialThe online version of this article (10.1186/s12912-018-0316-9) contains supplementary material, which is available to authorized users.
Sociodemographic factors appeared to have caused cessation of breastfeeding in some of the included articles. The preventive work should focus on how to improve the knowledge of healthcare professionals and targeted interventions must address mothers who are at risk of ceasing breastfeeding before the recommended time.
The purpose of this study was to explore how persons with severe mental illness (SMI) experience oral health problems (especially dry mouth), and weigh the support they received in this regard from professionals and staff at community-based congregate housing through a controlled intervention programme. Oral health problems and dry mouth are found in association with apathy and indifference, cognitive deficits, and long-term medication with psycho-pharmacological drugs. The present study describes the results from one part of a longitudinal intervention programme, which sought effective ways of mitigating dry mouth through increased support with oral health problems. This part consists of 67 informal interviews with ten participants in two community-based urban housing projects between November 2006 and June 2007, with a follow-up session in December 2007. Content analysis of the results yielded five categories: The shame of having poor dental health, history of dental care, experiences of self-care, handling of oral health problems, and experiences of staff support. Poor oral health caused shame and limited participation in social activities. Participants avoided oral health issues by such circumventions as denial of a tooth ache or dental infections, or postponing oral problems with the hope that they would die away. Offers of support were frequently resisted because of unsatisfactory prior encounters with dental professionals and staff. Our findings suggest that self-care needs to be facilitated in an unobtrusive manner with minimal staff involvement, and clients should be referred to dental care providers experienced in treating people with SMI.
Objective: Tea has been reported to reduce cardiovascular mortality, but the underlying mechanisms are largely unknown. The aim of the current project was to investigate the effect of green tea (Japanese Sencha), black tea (Indian Assam B.O.P.) and Rooibos tea (South Africa) on angiotensin-converting enzyme (ACE) and nitric oxide (NO). Design: Seventeen healthy volunteers received a single oral dose of 400 ml green tea, black tea or Rooibos tea in a randomized, three-phase, crossover study. ACE activity and NO concentration were measured (at 0, 30, 60 and 180 min) in all phases. ACE activity was analysed by means of a commercial radioenzymatic assay. Nitrite was analysed as a marker of NO concentration. In addition, ACE genotype was determined using a PCR method. Results: Oral intake of a single dose of Rooibos tea significantly inhibited ACE activity after 30 min (P , 0?01) and after 60 min (P , 0?05). A significant inhibition of ACE activity was seen with green tea for the ACE II genotype 30 min after intake of the tea (P , 0?05) and for the ACE ID genotype 60 min after intake (P , 0?05). A significant inhibition of ACE activity was also seen with Rooibos tea for the ACE II genotype 60 min after intake (P , 0?05). No significant effect on NO concentration was seen. Conclusions: These results suggest that green tea and Rooibos tea may have cardiovascular effects through inhibition of ACE activity.
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