144 research outputs found

    School-Based Oral Health Care in Rural Areas of Charleston County: Recommendations for a Business Plan for Rural Federally Qualified Health Center Intervention

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    The consultant report will focus on opportunities to improve access to dental care for school-aged children of Charleston County citizens of rural South Carolina through a partnership with a FQHC. The target population will be school-aged children who attend schools located in rural communities in the same service area as the FQHC. The objective of this consultant report is to examine opportunities to improve access to dental care for students of rural South Carolina through a partnership with a FQHC. The consultant report will provide an abstract with a succinct summary of overarching findings and a list of recommendations needed to construct a business proposal

    On the tear resistance of skin.

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    Tear resistance is of vital importance in the various functions of skin, especially protection from predatorial attack. Here, we mechanistically quantify the extreme tear resistance of skin and identify the underlying structural features, which lead to its sophisticated failure mechanisms. We explain why it is virtually impossible to propagate a tear in rabbit skin, chosen as a model material for the dermis of vertebrates. We express the deformation in terms of four mechanisms of collagen fibril activity in skin under tensile loading that virtually eliminate the possibility of tearing in pre-notched samples: fibril straightening, fibril reorientation towards the tensile direction, elastic stretching and interfibrillar sliding, all of which contribute to the redistribution of the stresses at the notch tip

    An Investigation of Male College Athletes’ Attitudes toward Sexual-Orientation

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    Multiple studies have found homophobic cultures within intercollegiate athletic departments. Accordingly, intolerance of gay/lesbian athletes (while most often forbidden by university policy), may still exist. Many “straight ” athletes feel gay/lesbian/bi-sexual (GLB) athletes do not “belong ” in college sport. In addition, female sport participants are frequently assumed to be lesbians. Within this social milieu, this study surveyed 698 male and female college athletes from four Division I & III universities in a traditionally conservative region, the Southeastern United States, to determine their attitudes toward sexual orientation. The primary research questions were: (a) “What are college-athletes ’ attitudes toward sexual orientation?” and (b) “Is there a significant relationship between athletes ’ gender and expressed attitudes toward sexual orientation? ” Specifically, this study focused on an examination and discussion of male college athletes ’ attitudes toward sexual orientation. Results confirm a relationship between athletes ’ gender and their sexual-orientation attitudes, specifically the existence of a higher degree of sexual prejudice among male college athletes. This research reveals that while homophobia is quickly eroding- even in the American South- there still exists a need for both expanded research of college athletes ’ sexual-orientation attitudes as well as an expansion o

    Pesticide Ground Water Monitoring Project Phase VIII

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    During Phase VIII monitoring (March 24, 2000 to June 30, 2001 ), 86 samples were collected from 77 new wells and 9 samples were collected from wells with previous detectable herbicide

    Calcified plaque modification alters local drug delivery in the treatment of peripheral atherosclerosis

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    Background: Calcific atherosclerosis is a major challenge to intraluminal drug delivery in peripheral artery disease (PAD). Objectives: We evaluated the effects of orbital atherectomy on intraluminal paclitaxel delivery to human peripheral arteries with substantial calcified plaque. Methods: Diagnostic angiography and 3-D rotational imaging of five fresh human lower limbs revealed calcification in all main arteries. The proximal or distal segment of each artery was treated using an orbital atherectomy system (OAS) under simulated blood flow and fluoroscopy. Explanted arterial segments underwent either histomorphometric assessment of effect or tracking of [superscript 14]C-labeled or fluorescent–labeled paclitaxel. Radiolabeled drug quantified bulk delivery and fluorescent label established penetration of drug over finer spatial domain in serial microscopic sections. Results: were interpreted using a mathematical model of binding-diffusion mediated arterial drug distribution. Results Lesion composition affected paclitaxel absorption and distribution in cadaveric human peripheral arteries. Pretreatment imaging calcium scores in control femoropopliteal arterial segments correlated with a log-linear decline in the bulk absorption rate-constant of [superscript 14]C-labeled, declining 5.5-fold per calcified quadrant (p = 0.05, n = 7). Compared to controls, OAS-treated femoropopliteal segments exhibited 180 μm thinner intima (p < 0.001), 45% less plaque calcification, and 2 log orders higher paclitaxel bulk absorption rate-constants. Correspondingly, fluorescent paclitaxel penetrated deeper in OAS-treated femoropopliteal segments compared to controls, due to a 70% increase in diffusivity (p < 0.001). Conclusions These data illustrate that calcified plaque limited intravascular drug delivery, and controlled OAS treatment of calcific plaques resulted in greater drug permeability and improved adjunct drug delivery to diseased arteries.Peripheral artery disease Keywords: Drug coated balloons, Drug eluting stents, Atherectomy, Orbital atherectomy, calcified plaque, PaclitaxelNational Institute of Mental Health (U.S.) (Grant R01 GM-49039

    Treatment with chondroitin sulfate to modulate inflammation and atherogenesis in obesity

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    Background and aims: Osteoarthritic patients treated with high doses of chondroitin sulfate (CS) have a lower incidence of coronary heart disease - but the mechanistic aspects of these beneficial effects of CS remain undefined. We examined how CS treatment affects the formation of atheroma via interaction with endothelial cells and monocytes. Methods: We characterized arterial atheromatous plaques by multiphoton microscopy and serum pro-inflammatory cytokines by immunoenzymatic techniques in obese mice receiving CS (1 g/kg/day, i.p.) or vehicle for 6 days. Effects of CS on signaling pathways, cytokine secretion and macrophage migration were evaluated in cultures of human coronary endothelial cells and in a monocyte cell line stimulated with TNF-α by Western blot, immunoenzymatic techniques and transwell migration assays. Results: Treatment of obese mice with CS reduced the extension of foam cell coverage in atheromatous plaques of arterial bifurcations by 62.5%, the serum concentration of IL1β by 70%, TNF-α by 82% and selected chemokines by 25-35%. Cultures of coronary endothelial cells and monocytes stimulated with TNF-α secreted less pro-inflammatory cytokines in the presence of CS (P < 0.01). CS reduced the activation of the TNF-α signaling pathway in endothelial cells (pErk 36% of reduction, and NFκB 33% of reduction), and the migration of activated monocytes to inflamed endothelial cells in transwells (81 ± 6 vs. 13 ± 2, P < 0.001). Conclusions: CS interferes with the pro-inflammatory activation of monocytes and endothelial cells driven by TNF-α thus reducing the propagation of inflammation and preventing the formation of atherosclerotic plaques

    Early Initiation of Colorectal Cancer Screening in Individuals with Affected First-degree Relatives

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    BACKGROUND: Several guidelines recommend initiating colorectal cancer screening at age 40 for individuals with affected first-degree relatives, yet little evidence exists describing how often these individuals receive screening procedures. OBJECTIVES: To determine the proportion of individuals in whom early initiation of colorectal cancer screening might be indicated and whether screening disparities exist. DESIGN: Population-based Supplemental Cancer Control Module to the 2000 National Health Interview Survey. PARTICIPANTS: Respondents, 5,564, aged 40 to 49 years were included within the analysis. MEASUREMENTS: Patient self-report of sigmoidoscopy, colonoscopy, or fecal occult blood test. RESULTS: Overall, 279 respondents (5.4%: 95% C.I., 4.7, 6.2) reported having a first-degree relative affected with colorectal cancer. For individuals with a positive family history, 67 whites (27.9%: 95% C.I., 21.1, 34.5) and 3 African American (9.3%: 95% C.I., 1.7, 37.9) had undergone an endoscopic procedure within the previous 10 years (P-value = .03). After adjusting for age, family history, gender, educational level, insurance status, and usual source of care, whites were more likely to be current with early initiation endoscopic screening recommendations than African Americans (OR = 1.38: 95% C.I., 1.01, 1.87). Having an affected first-degree relative with colorectal cancer appeared to have a stronger impact on endoscopic screening for whites (OR = 3.21: 95% C.I., 2.31, 4.46) than for African Americans (OR = 1.05: 95% C.I., 0.15, 7.21). CONCLUSIONS: White participants with a family history are more likely to have endoscopic procedures beginning before age 50 than African Americans
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