Does Neighborhood Social Cohesion Influence Participation in Routine Cancer Screening? Findings From a Representative Sample of Adults in South Florida.

BACKGROUND AND OBJECTIVES: Neighborhood social cohesion (NSC) has been associated with a variety of health outcomes, but limited research has examined its impact on behaviors that support cancer control. The purpose of this study was to examine associations between NSC and guideline-concordant breast, cervical and colorectal cancer screening. METHODS: Data are from a cross-sectional survey administered to 716 adults in South Florida from 2019 to 2020. The analytic samples included adults eligible for breast (n = 134), cervical (n = 195), and colorectal cancer (n = 265) screening. NSC was measured using a validated 5-item instrument. Associations between NSC and guideline-concordant screening were examined using multivariable logistic regression. RESULTS: In fully adjusted analyses, the odds of guideline-concordant breast cancer screening increased by 86% for every unit increase in NSC (aOR = 1.86; 95% CI, 1.03-3.36). NSC was not statistically significantly associated with guideline-concordant cervical cancer screening (aOR = 0.86; 95% CI, 0.54-1.38) or colorectal cancer screening (aOR = 1.29; 95% CI, 0.81-2.04). CONCLUSIONS: These findings suggest that NSC supports some screening behaviors, namely, mammography use. To better understand heterogeneous relationships between NSC and utilization of preventive care services such as cancer screening, more research is needed that disaggregates effects by sex, age, race/ethnicity, and socioeconomic status.

Storm Surfing Fatalities.

OBJECTIVES: Tropical storms and hurricanes often produce ocean wave conditions that attract surfers. The risk for serious injury or death from "storm surfing" has not yet been described in the medical literature. This study aimed to quantify deaths attributable to storm surfing along the coasts of North America and the Caribbean islands. METHODS: This was a retrospective review of cases of surfing-related fatalities reported in the tropical cyclone reports of the National Hurricane Center from 1995 to 2020. Media reports were used to identify additional cases and, when available, to provide supplemental demographic and geographical information. RESULTS: There have been 27 reported storm surfing deaths during this time period. Among those for whom demographic data were available, all of the decedents were male and three were children younger than 18 years old. All but three of the deaths occurred among those surfing Atlantic storms, and one-third of the fatal injuries occurred off the coast of Florida. Eight deaths occurred while surf conditions were affected by tropical storms that did not reach hurricane status. CONCLUSIONS: Both tropical storms and hurricanes produce dangerous surf conditions that have resulted in fatal injuries among surfers during the past 25 years.

Fibrotic scar after experimental autoimmune encephalomyelitis inhibits oligodendrocyte differentiation.

Remyelination failure is a crucial component of disease progression in the autoimmune demyelinating disease Multiple Sclerosis (MS). The regenerative capacity of oligodendrocyte progenitor cells (OPCs) to replace myelinating oligodendrocytes is likely influenced by many aspects of the lesion environment including inflammatory signaling and extracellular matrix (ECM) deposition. These features of MS lesions are typically attributed to infiltrating leukocytes and reactive astrocytes. Here we demonstrate that fibroblasts also contribute to the inhibitory environment in the animal model of MS, experimental autoimmune encephalomyelitis (EAE). Using Col1α1GFP transgenic mice, we show that perivascular fibroblasts are activated in the spinal cord at EAE onset, and infiltrate the parenchyma by the peak of behavioral deficits where they are closely associated with areas of demyelination, myeloid cell accumulation, and ECM deposition. We further show that both fibroblast conditioned media and fibroblast ECM inhibit the differentiation of OPCs into mature oligodendrocytes. Taken together, our results indicate that the fibrotic scar is a major component of EAE pathology that leads to an inhibitory environment for remyelination, thus raising the possibility that anti-fibrotic mechanisms may serve as novel therapeutic targets for MS.