Nitric oxide dosed in short bursts at high concentrations may protect against Covid 19.

It has long been suggested that NO may inhibit an early stage in viral replication. Furthermore, in vitro tests have shown that NO inhibits the replication cycle of severe acute respiratory syndrome coronavirus. Despite smoking being listed as a risk factor to contract Covid-19, only a low proportion of the smokers suffered from SARS-corona infection in China 2003, and from Covid-19 in China, Europe and the US. We hypothesize, that the intermittent bursts of high NO concentration in cigarette smoke may be a mechanism in protecting against the virus. Mainstream smoke from cigarettes contains NO at peak concentrations of between about 250 ppm and 1350 ppm in each puff as compared to medicinal use of no more than 80 to a maximum of 160 ppm. The diffusion of NO through the cell wall to reach the virus should be significantly more effective at the very high NO concentration in the smoke, according to classic laws of physics. The only oxide of nitrogen in the mainstream smoke is NO, and the NO2 concentration that is inhaled is very low or undetectable, and methemoglobin levels are lower in smokers than non-smokers, reasonably explained by the breaths of air in between the puffs that wash out the NO. Specialized iNO machines can now be developed to provide the drug intermittently in short bursts at high concentration dose, which would then provide both a preventative drug for those at high risk, as well as an effective treatment, without the health hazards associated with smoking.

Role of oral Polypodium leucotomos extract in dermatologic diseases: a review of the literature.

Polypodium leucotomos extract (PLE), derived from the tropical fern of Polypodiaceae family, has properties ranging from immunomodulatory and antioxidative to photoprotective. It is these multiple mechanisms of action, in combination with a favorable side effect profile, which makes PLE a promising adjunctive treatment for several dermatologic disorders. Studies are summarized on the use and potential applications of PLE in the treatment or management of photodermatoses, vitiligo, melasma, psoriasis, atopic dermatitis, and more recently, in minimizing infections in high-performance athletes. More data, however, with larger sample sizes are needed to confirm these benefits.

Hidden convergence: toward a historical comparison of U.S. and U.K. health policy.

The social science literature on the comparative history of the welfare state offers conflicting accounts of the relationship between the United States and the United Kingdom. At first blush, the comparative history of health care policy in the United States and the United Kingdom seems to affirm the dominant view that the U.S. and U.K. welfare states have diverged substantially during the twentieth century. A comparison of U.S. and U.K. health policy, however, suggests that there are more parallels and points of tangency between the two systems than are readily apparent. The comparative history of health policy over the past century reveals common political and policy challenges and frequent interchanges of policy ideas, and helps uncover the political dynamics behind the development of health policy in the two countries, which can, in turn, help illuminate the contemporary politics of reform in both countries.

The Building Bridges Initiative: residential and community-based providers, families, and youth coming together to improve outcomes.

The Building Bridges Initiative (BBI) provides a framework for achieving positive outcomes for youth and families served in residential and community programs. Founded on core principles, an emerging evidence base, and acknowledged best practices, the BBI emphasizes collaboration and coordination between providers, families, youth, advocates, and policymakers to achieve its aims. Examples are presented of successful state, community, and provider practice changes, and available tools and resources to support all constituencies in achieving positive outcomes.

Estrogen receptor expression in melasma: results from facial skin of affected patients.

BACKGROUND AND OBJECTIVE: Melasma is a commonly acquired hypermelanosis of the skin due to various etiological factors, including pregnancy and oral contraceptives. Estrogen receptor expression in affected skin has not yet been investigated. The purpose of this study was to compare estrogen receptor expression in hyperpigmented and normal facial skin of patients with melasma. METHODS: Biopsies of 3 mm were taken from affected and unaffected forehead skin of 2 female patients with melasma. Frozen sections of the tissues were obtained and mouse monoclonal antibody against human estrogen receptors was tested at various dilutions to determine the optimum concentrations required for reproducible immunostaining with minimal background staining. Fluorescence was evaluated and compared qualitatively. RESULTS: The immunohistochemical staining of tissue from both patients reflected a qualitative increase in estrogen receptor expression in melasma-affected skin compared to unaffected skin. CONCLUSIONS: This study demonstrates the increased expression of estrogen receptors in melasma-affected skin and may establish the basis for exploring topical anti-estrogen therapies in melasma.

Ensuring the preconditions for transformation through licensing, regulation, accreditation, and standards.

Residential treatment is a potentially powerful intervention for children and families, currently facing the imperative to fundamentally change practice models to achieve greater quality efficacy, efficiency, and effectiveness. Such transformation is best accomplished from a solid foundation which is created by licensing, regulation, accreditation, and internal standards.

Liposome-encapsulated doxorubicin in combination with standard agents (cyclophosphamide, vincristine, prednisone) in patients with newly diagnosed AIDS-related non-Hodgkin's lymphoma: results of therapy and correlates of response.

PURPOSE: To evaluate the safety and efficacy of liposomal doxorubicin (Myocet; Medeus Pharma Ltd, Herts,UK) when substituted for doxorubicin in the CHOP regimen (cyclophosphamide, doxorubicin, vincristine, prednisone) in patients with newly diagnosed AIDS-related non-Hodgkin's lymphoma (AIDS-NHL). Secondary objectives were to assess the impact of HIV viral control on response and survival, and to correlate MDR-1 expression with outcome. PATIENTS AND METHODS: Liposomal doxorubicin at doses of 40, 50, 60, and 80 mg/m(2) was given with fixed doses of cyclophosphamide, vincristine, and prednisone every 21 days. All patients received concurrent highly active antiretroviral therapy. NHL tissues were evaluated for multidrug resistance (MDR-1) expression. RESULTS: Twenty-four patients were accrued. 67% had high or high-intermediate International Prognostic Index scores; the median CD4 lymphocyte count was 112/mm(3) (range, 19/mm(3) to 791/mm(3)). No dose-limiting toxicities were observed at any level, with myelosuppression being the most frequent toxicity. Overall response rate was 88%, with 75% complete responses (CRs), and 13% partial responses. The median duration of CR was 15.6+ months (range, 1.7 to 43.5+ months). Effective HIV viral control during chemotherapy was associated with significantly improved survival (P =.027), but CRs were attained independent of HIV viral control. MDR-1 expression did not correlate with response, suggesting that the liposomal doxorubicin may evade this resistance mechanism. CONCLUSION: Liposomal doxorubicin in combination with cyclophosphamide, vincristine, and prednisone is active in AIDS-NHL, with complete remissions achieved in 75% independent of HIV viral control or tissue MDR-1 expression. HIV viral control is associated with a significant improvement in survival. Additional studies are warranted.

Future directions in residential treatment.

Residential treatment has assumed a role in the service system of being the placement of last resort. This has been driven by various policy initiatives and trends to which the field has tended to respond with defensiveness. Experiences over the past few decades have demonstrated that the issue for residential programs is not simply the survival of an important service for seriously troubled children and their families, but rather the development of a new paradigm for residential treatment's role in community service systems. This paradigm involves residential treatment programs and the a more proactive stance with local, statewide, and national partners, helping to create integrated systems of care, implement outcome measurement, and create family- and community-centered programming.

Computer-assisted detection (CAD) methodology for early detection of response to pharmaceutical therapy in tuberculosis patients.

The chest x-ray radiological features of tuberculosis patients are well documented, and the radiological features that change in response to successful pharmaceutical therapy can be followed with longitudinal studies over time. The patients can also be classified as either responsive or resistant to pharmaceutical therapy based on clinical improvement. We have retrospectively collected time series chest x-ray images of 200 patients diagnosed with tuberculosis receiving the standard pharmaceutical treatment. Computer algorithms can be created to utilize image texture features to assess the temporal changes in the chest x-rays of the tuberculosis patients. This methodology provides a framework for a computer-assisted detection (CAD) system that may provide physicians with the ability to detect poor treatment response earlier in pharmaceutical therapy. Early detection allows physicians to respond with more timely treatment alternatives and improved outcomes. Such a system has the potential to increase treatment efficacy for millions of patients each year.