Acute inflammation induced by the biopsy of mouse mammary tumors promotes the development of metastasis

Development of metastasis in peripheral tissues is a major problem in the fight to cure breast cancer. Although it is becoming evident that chronic inflammation can contribute to tumor progression and metastasis, the effect of acute inflammation in primary tumor is less known. Using mouse models for breast cancer here we show that biopsy of mammary tumors increases the frequency of lung metastases. This effect is associated with the recruitment of inflammatory cells to the lung and elevated levels of certain cytokines such as IL-6 in the lung airways. Antiinflammatory treatment prior to and after the biopsy reduces the development of metastases triggered by the biopsy. In addition, while lack of IL-6 does not affect primary tumor development, it protects from increasing number of metastases upon biopsy. Thus, our studies show that in addition to chronic inflammation, acute immune response caused by invasive procedures in the primary tumor may cause an increased risk on peripheral metastases, but the risk could be decreased by anti-inflammatory treatments.     

Dialogic Linkage and Resonance in Autism

We evaluated how children with autism make linguistic adjustments when talking with someone else. We devised two novel measures to assess (a) overall conversational linkage and (b) utterance-by-utterance resonance within dialogue between an adult and matched participants with and without autism (n?=?12 per group). Participants with autism were less able to establish ‘cognitive linkage’ with an interlocutor. As predicted, only among children with autism was there a positive correlation between the ability to link in with speaker’s meanings and ratings of emotional connectedness with the conversational partner. Participants with autism were not less likely to show a basic form of dialogic resonance across successive utterances (the ‘frame grab’), but more often elaborated their responses in an atypical manner.     

The role of arthroscopy in the treatment of functional instability of the ankle

BackgroundAnkle sprains are common, the majority resolving with functional rehabilitation. Some patients are left with symptoms of functional instability (FI). Ankle arthroscopy in those with symptoms of FI is not well covered in the literature. Our aim was to assess its role in FI of the ankle.MethodsRetrospective case note analysis of patients with FI following an ankle sprain from 2005 to 2007. All underwent arthroscopy, provided mechanical instability was excluded (EUA and stress X-rays), and there were no signs of soft tissue impingement. These patients had exhausted all options of conservative therapy.ResultsSeventy-seven patients with a mean age of 38.1: five had true mechanical instability and were excluded. 72 underwent arthroscopy: 67 (93.1%) had significant amounts of scar tissue needing debridement, most commonly in the antero-lateral corner (58.3%). 52 patients improved (72.2%) at a minimum of 6 months follow-up.ConclusionOur study supports the role of ankle arthroscopy in the treatment of FI following trauma. It should be considered when conservative measures have failed.     

A systematic review and meta-synthesis of qualitative studies that investigate the emotional experiences of staff working in homeless settings

Homelessness is a pervasive issue in society, and government policies have highlighted the need to focus on the experience of front-line staff in homelessness settings. The aim of this meta-synthesis was to draw together the available research to further understanding of the experiences of staff working with homeless people. A systematic search was conducted across four electronic databases (ASSIA, PsycInfo, Sociological Abstracts and Web of Science) from the date of their inception. Qualitative research exploring the emotional experiences of staff working in homeless settings was identified. Identified studies were subject to quality assessment, and the data were synthesised using meta-ethnography. Ten studies were included in the synthesis following screening of 228 titles, 92 abstracts and 33 full texts. The concepts that were obtained from the analysis were building quality relationships, negotiating boundaries, carrying the emotional burden (self and others), accessing care and support (self-care and from others), individual advancement, advocating and contextual helplessness. An overarching theoretical construction of the internal experiences of support staff in managing the demands of the role along with their own needs was developed. This theory may provide the basis for testable hypotheses in future research and inform the development of support and training opportunities for staff working within homelessness settings.     

Aldose reductase inhibitors in the treatment of diabetic peripheral neuropathy: a review

PurposeThe purpose of this article was to examine how aldose reductase (AR) inhibitors are used in the prevention and treatment of peripheral neuropathy in diabetes, specifically focusing on efficacy.MethodsMedline searches were used to identify clinical trials investigating AR inhibitors and their proposed mechanism of action, efficacy, and adverse effects. Additionally, the references of the articles returned by the Medline search were examined for pertinent publications.ResultsThree AR inhibitors were selected for review. Modest improvements in the preservation and restoration of nerve conduction velocities were reported in the studies. Additionally, patients reported improvements in the subjective symptoms associated with diabetic peripheral neuropathy. Adverse effects for the studied agents were minimal or not reported.ConclusionsGiven the mechanism by which diabetic peripheral neuropathy can result, targeting the polyol pathway as a method of treatment appears promising, yet the efficacy of newer AR inhibitors is still to be proven. Currently, these agents are not marketed in the United States. As newer studies emerge, diabetes educators will learn more about their efficacy and safety in preventing and treating diabetic peripheral neuropathy.     

Disparities in Cardiac Care of Women: Current Data and Possible Solutions

Purpose of review

Cardiovascular disease remains the leading cause of death in women. The goal of this review is to address known disparities in cardiovascular care with regard to diagnosis and treatment of heart disease in women.

Recent findings

Gender-specific differences in regard to the incidence, treatment, and outcomes of common cardiovascular pathology are increasingly recognized. Particular attention to ischemic heart disease, arrhythmia, congestive heart failure, and structural heart disease are reviewed in this article. There is a clear racial and ethnic discrepancy among women which is particularly concerning with a progressively diverse patient population. Medical and surgical treatment differences between men and women must be addressed by providers in order to optimize long-term outcomes among all patients.

Summary

Understanding the unique cardiovascular risk profile and barriers to optimal treatment outcomes in women is imperative to eliminate the current disparities in cardiovascular disease.

     

Carotid artery occlusive disease

Stroke is the third most common cause of death and the leading cause of disability in the United States. Management of identifiable risk factors and careful selection of patients for operative intervention constitute the current approach to reducing the morbidity and mortality associated with stroke. A carefully performed carotid endarterectomy (CEA), which has a low periprocedural complication rate, is the only form of mechanical cerebral revascularization for which definitive evidence of clinical effectiveness has been reported. Recently, retrospective case reports and case series have demonstrated the feasibility of carotid angioplasty and stenting as a possible alternative to CEA. In the tradition of the two previous National Institutes of Health (NIH)-sponsored trials--the North American Symptomatic Carotid Endarterectomy Trial (NASCET) and Asymptomatic Carotid Atherosclerosis Study (ACAS)--the National Institutes of Health has sponsored a clinical trial (CREST: Carotid Revascularization-Endarterectomy vs Stent Trial) that is currently under way to determine the efficacy and risks of carotid angioplasty and stenting compared with CEA.     

Branched copolymer-stabilised nanoemulsions as new candidate oral drug delivery systems

The delivery of drugs to the bloodstream via oral administration may suffer from a number of complications including poor dissolution, first pass metabolism and the active intervention of efflux transporters such as P-glycoproteins; drugs which are efflux substrates may cause considerable problems across many clinical conditions. Here we have employed a branch-polymer stabilised nanoemulsion strategy to create highly robust oil droplets (e.g. peanut oil, castor oil and soybean oil) containing different dissolved antiretroviral drugs used in the daily fight against HIV/AIDS. Although very limited difference in permeation through a Caco-2 gut epithelium model was seen for efavirenz, the permeation of the protease inhibitor lopinavir was considerably higher (approximately 10-fold) when applied to an epithelium monolayer in emulsion form than the control within an aqueous DMSO vehicle. The presented nanoemulsion approach may allow drug-specific permeation improvements for various drug substances.

Branched copolymers offer very efficient nanoemulsion stabilisers with benefits for oral drug delivery.