An unusual cause of acute renal failure in systemic sclerosis

BACKGROUND: Scleroderma renal crisis is one of the most life threatening complications of scleroderma. Enteric hyperoxaluria complicates extensive disease or resection of the small intestine in the presence of an intact colon, and is associated with calcium oxalate nephrolithiasis. This cause of renal failure may be underestimated and should be considered in all patients with malabsorption and renal failure. CASE REPORT: A 78 year old woman with systemic sclerosis affecting the bowel developed acute renal failure caused by oxalate nephropathy. RESULTS: The patient's renal failure improved on an oxalate free diet.     

The significance of privacy and trust in providing health-related services to behaviorally bisexual men in the United States

Previous research suggests that bisexual men face unique health concerns in comparison to their exclusively homosexual and heterosexual counterparts. However, little is known about behaviorally bisexual men's experiences with health services, including ways of providing services that would be most appropriate to meet the health needs of this population. This study sought to understand preferences for health-related services among behaviorally bisexual men in the Midwestern United States. Using a community-based research approach, a diverse sample of 75 behaviorally bisexual men was recruited for in-depth interviews. Qualitative data were analyzed utilizing inductive coding through established team-based protocols to ensure reliability. Themes emerged involving the importance of privacy and trust when reaching, recruiting, and engaging behaviorally bisexual men in health services. Findings suggest that multifaceted approaches are needed, including those that provide relevant and confidential services while allowing for the development and ongoing maintenance of trust.     

Venous access and care: harnessing pragmatics in harm reduction for people who inject drugs

Aim To explore the facilitators of long‐term hepatitis C avoidance among people who inject drugs. Design We employed a qualitative life history design. Setting Recruitment took place through low‐threshold drug services and drug user networks in South East and North London. Participants were interviewed at the recruitment services or in their homes. Participants The sample comprised 35 people who inject drugs, 20 of whom were hepatitis C antibody‐negative. Participants' average injecting trajectory was 19 years (6–33), with 66% primarily injecting heroin, and 34% a crack and heroin mix. Nine (26%) of the sample were female and the average age was 39 years (23–53). Measurements Two interviews were conducted with each participant, with the second interview incorporating reference to a computer‐constructed life history time‐line. Interview accounts were audiorecorded, transcribed verbatim and analysed thematically. Findings Hepatitis C risk awareness was recent and deprioritized by the majority of participants. The facilitation of venous access and care was an initial and enduring rationale for safe injecting practices. Difficult venous access resulted in increased contamination of injecting environments and transitions to femoral injecting. Participants expressed an unmet desire for non‐judgemental venous access information and advice. Conclusions Harm reduction interventions which attend to the immediate priorities of people who inject drugs, such as venous access and care, have the potential to re‐engage individuals who are jaded or confused by hepatitis C prevention messages.     

Desmoplastic fibroma of the pediatric cranium: case report and review of the literature

Purpose

Desmoplastic fibromas are primary bone tumors that seldom occur in the cranial bones. Furthermore, reports of desmoplastic fibromas of the skull in children are exceedingly rare. Although desmoplastic fibromas are histologically benign, they are locally aggressive and have a propensity to reoccur. Their radiographic appearance may mimic other more common central nervous system and bone neoplasms. There are only 19 reported cases of desmoplastic fibroma of the cranium in the literature, and only seven occurred in the pediatric age group. We present a case report of an 11-year-old female patient with a desmoplastic fibroma of the parieto-occipital region and review the literature.

Case report

An 11-year-old female presented to the craniofacial clinic complaining of intermittent pain and a soft mass in the occipital region. There was a distant history of trauma to the region that did not require medical intervention. Computed tomography imaging revealed a lytic bone lesion overlying the sagittal sinus in the parieto-occipital region. Surgical resection with wide margins and immediate autologous reconstruction was performed. Pathological analysis revealed a desmoplastic fibroma. At 4 months of follow-up, no recurrence has been noted.

Conclusion

Desmoplastic fibroma of the cranium is rare. Complete surgical resection with careful follow-up is the treatment of choice.     

Affective Judgment and Physical Activity in Youth: Review and Meta-Analyses

Background

A recent meta-analysis on affective judgment and physical activity in adults yielded a medium effect-sized relationship. Despite narrative reviews and topic interest, a meta-analysis in youth has not yet been conducted.

Purpose

This study aims to appraise the overall effect of affective judgment on physical activity in youth via meta-analyses and explore moderators of this relationship.

Methods

Literature searches were conducted between 1990 and 2011. Fixed and random effects meta-analysis with correction for sampling, measurement, and publication bias were employed.

Results

Fifty-six correlational studies and 14 interventions met the inclusion criteria. Among correlational studies, the corrected summary r was 0.26 (95 % CI 0.18–0.32). Significant moderators were gender, measure of physical activity, and recruitment context. Among intervention studies, Cohen’s d was 0.25 (95 % CI 0.11–0.40).

Conclusions

The results are close to a medium effect size which is larger than other meta-analytic physical activity correlates among youth. The construct should be included in our contemporary theories for understanding and intervening upon youth physical activity.     

Aberrant Myeloid Differentiation Contributes to the Development of Osteoporosis in Neurofibromatosis Type 1

Neurofibromatosis type 1 (NF1), also known as von Recklinghausen disease, is a common autosomal dominant genetic disorder affecting approximately 1 in 3000 individuals worldwide. NF1 results from heritable or spontaneous mutations of the NF1 tumor suppressor gene. NF1 encodes the protein neurofibromin, which functions to negatively regulate Ras-activity. Approximately 50 % of NF1 patients develop osteopenia or osteoporosis, resulting in significantly increased rates of long-bone fracture and morbidity. While defective osteoblast bone anabolism has been implicated as a central factor in the pathogenesis of NF1 associated skeletal deficits, recent data suggest that NF1 (Nf1) haploinsufficiency within the hematopoietic compartment, particularly in osteoclasts and myeloid progenitors, plays a pivotal role in engendering NF1 osseous manifestations. In this chapter, we review the latest data from clinical studies and murine models delineating a critical role for hematopoietic compartment, myeloid progenitors of NF1 (Nf1) haploinsufficient and their progeny-osteoclasts, in the pathogenesis of NF1 associated osteopenia/osteoporosis and discuss putative targets for future therapeutics.