Infectious Bronchitis Virus Immune Responses in the Harderian Gland upon Initial Vaccination.

In recent years, Arkansas Delmarva Poultry Industry (ArkDPI)-derived infectious bronchitis (IB) virus (IBV) vaccines have been used to characterize the immune responses of chickens subsequent to vaccination on day of hatch or beyond. Perhaps because ArkDPI vaccines display increased heterogeneity, the results on cell immune responses have shown ambiguity. In the current study, we investigated the effects of vaccination with a highly stable and homogeneous Massachusetts (Mass)-type vaccine on days 1 or 7 of age on Harderian gland (HG) responses.

Infectious Bronchitis Virus Vaccination at Day 1 of Age Further Limits Cross Protection.

Cross-protection and immune responses elicited by infectious bronchitis virus (IBV) vaccination on Day 1 of age or at later time points were examined. Specific-pathogen-free chickens were vaccinated with a Massachusetts-type vaccine and heterologous challenge was performed with an Arkansas (Ark) -type virulent strain. In Trial 1, chickens vaccinated on Day 1 or Day 10 of age were challenged 21 days after vaccination.

Early Vaccination of Chickens Induces Suboptimal Immunity Against Infectious Bronchitis Virus.

Infectious bronchitis virus (IBV) is highly prevalent in broiler chickens despite extensive vaccination commonly conducted early after hatch. The effects of early vaccination on immune responses were further investigated in chickens primed at increasing ages, followed by booster vaccination with an attenuated Arkansas (Ark) Delmarva Poultry Industry-type vaccine. Results show that vaccination on day 1 of age elicits significantly lower systemic and mucosal antibody responses compared with vaccination at later time points in the life of the chicken.

Sterility and Stability Testing of Preservative-free Albuterol.

Background: Continuous albuterol administration (CAA) is commonly used in hospitalized patients for treatment of asthma exacerbations. Due to higher dose requirements, CAA requires large volumes of albuterol obtained from multidose vials containing benzalkonium chloride (BAC). BAC is a common pharmaceutical preservative and potent bronchoconstrictor, which may antagonize the bronchodilation effects of albuterol.

At the intersection of chronic disease, disability and health services research: A scoping literature review.

Background: There is a concerted effort underway to evaluate and reform our nation's approach to the health of people with ongoing or elevated needs for care, particularly persons with chronic conditions and/or disabilities.

Objective: This literature review characterizes the current state of knowledge on the measurement of chronic disease and disability in population-based health services research on working age adults (age 18-64).

Methods: Scoping review methods were used to scan the health services research literature published since the year 2000, including medline, psycINFO and manual searches.

Introducing the Adults with Chronic Healthcare Needs (ACHCN) definition and screening instrument: Rationale, supporting evidence and testing.

Background: Among working age adults in the United States, there is a large, heterogeneous population that requires ongoing and elevated levels of healthcare and related services. At present, there are conflicting approaches to the definition and measurement of this population in health services research.

Objective: An expert panel was convened by the National Institutes of Health with the objective of developing a population-level definition of Adults with Chronic Healthcare Needs (ACHCN).

Diagnosis isn't enough: Understanding the connections between high health care utilization, chronic conditions and disabilities among U.S. working age adults.

Background: Under the ACA, new programs are being developed to enhance care coordination and reduce health care costs among people with chronic conditions, disabilities, and high utilization of health care. However, the relationships between these groups are not well understood.

Objectives: Our aims were to (1) identify high utilizers of health care in the U.

Age-dependent immune responses and immune protection after avian coronavirus vaccination.

Infectious bronchitis virus (IBV) is an endemic disease of chickens and a major contributor to economic losses for the poultry industry despite vaccination. Recent observations indicated that chicks may have an immature immune system immediately after hatching when vaccinated for IBV. Therefore we hypothesized that early IBV vaccination will generate an immature, poorly protective IBV-specific immune response contributing to immune escape and persistence of IBV.

Difference, disparity, and disability: a comparison of health, insurance coverage, and health service use on the basis of race/ethnicity among US adults with disabilities, 2006-2008.

Background: In the United States, research on health disparities has begun to include people with disabilities as a minority population. However, there is a gap in our knowledge of whether, and to what extent, racial and ethnic disparities may affect the health or health care access of people with disabilities.

Objectives: We examined potential disparities in overall health, insurance coverage status, and health service use between non-Hispanic whites, non-Hispanic blacks, and Hispanics, among a nationally representative US sample of adults with and without disabilities (N=63,257), using both bivariate and multivariate methods.

Immunoglobulin A as an early humoral responder after mucosal avian coronavirus vaccination.

Infectious bronchitis virus (IBV) is a highly contagious coronavirus prevalent in all countries with an extensive poultry industry and continues to cause economic losses. IBV strains of the Ark serotype are highly prevalent in the Southeastern United States despite extensive vaccination. One explanation for this observation is the high genetic variability of IBV.

Cell-mediated immune responses in the head-associated lymphoid tissues induced to a live attenuated avian coronavirus vaccine.

Humoral immunity is important for controlling viral diseases of poultry, but recent studies have indicated that cytotoxic T cells also play an important role in the immune response to infectious bronchitis virus (IBV). To better understand the cell mediated immune responses to IBV in the mucosal and systemic immune compartments chickens were ocularly vaccinated with IBV. This induced a lymphocyte expansion in head-associated lymphoid tissues (HALT) and to a lesser extent in the spleen, followed by a rapid decline, probably due to homing of lymphocytes out of these organs and contraction of the lymphocyte population.

Use of emergency departments among working age adults with disabilities: a problem of access and service needs.

Objective: To examine the relationship between emergency department (ED) use and access to medical care and prescription medications among working age Americans with disabilities.

Data Source: Pooled data from the 2006-2008 Medical Expenditure Panel Survey (MEPS), a U.S.

The complex web of health: relationships among chronic conditions, disability, and health services.

Objectives: A critical issue in health-care reform concerns how to realign health-care delivery systems to manage medical care services for people with ongoing and costly needs for care. We examined the overlapping health-care needs of two such population groups among the U.S.

Conjunctiva-associated lymphoid tissue in avian mucosal immunity.

Conjunctiva-associated lymphoid tissue's (CALT) role in generating avian mucosal adaptive immunity was measured by analyzing cellular composition, expression of the polymeric immunoglobulin receptor (pIgR), and production of cytokines and antibodies in chickens ocular exposed to a replication-deficient adenovirus of serotype 5 (Ad5). These studies demonstrate that CALT contains B cells, γδ T cells, T helper, and cytotoxic T cells, and a T lymphocyte composition, which more resembles Harderian glands than spleen. CALT-derived lymphocytes contain antigen-specific, IgA-secreting plasma cells and cytokine-producing lymphocytes after ocular Ad5 vaccination.

If we build it, who will come? Working-age adults with chronic health care needs and the medical home.

Background: Currently, there is a call to implement and test the patient-centered medical home in adult populations, particularly among those with chronic conditions. However, the size, composition, and service use of the population who might require this coordinated care model need to be assessed, as does the way they are defined and identified.

Objectives: Using nationally representative data from the 2002 to 2004 Medical Expenditure Panel Survey, we provide a preliminary profile of the population of working-age adults with chronic health care needs (ACHCN), including those with chronic health conditions and disabilities.

Ongoing coverage for ongoing care: access, utilization, and out-of-pocket spending among uninsured working-aged adults with chronic health care needs.

Objectives: We sought to determine how part-year and full-year gaps in health insurance coverage affected working-aged persons with chronic health care needs.

Methods: We conducted multivariate analyses of the 2002-2004 Medical Expenditure Panel Survey to compare access, utilization, and out-of-pocket spending burden among key groups of persons with chronic conditions and disabilities. The results are generalizable to the US community-dwelling population aged 18 to 64 years.

Convergence and divergence: differences in disability prevalence estimates in the United States and Canada based on four health survey instruments.

An analysis of data from the Joint Canada/United States Survey of Health (JCUSH), allows us to compare prevalence estimates that result from four different question sets designed to assess disability from a group of respondents residing in either Canada or the United States. Depending upon the question set used and the coding applied to the responses, age-standardized prevalence estimates varied widely in both countries. In the U.

Infectious bronchitis virus in the chicken Harderian gland and lachrymal fluid: viral load, infectivity, immune cell responses, and effects of viral immunodeficiency.

We compared detection of infectious bronchitis virus (IBV) by quantitative RT-PCR (qRT-PCR) in tears and trachea of IBV-infected chickens and found that quantitative detection of IBV RNA in tears is more sensitive than in tracheal homogenates. Furthermore, we demonstrated that IBV contained in chicken lachrymal fluid is infectious and that tears of IBV-infected chickens can be used to infect naive chickens. We compared the immune responses to IBV in the Harderian gland and cecal tonsils of immunocompetent chickens and chickens infected with chicken anemia virus (CAV) and/or infectious bursal disease virus (IBDV).

Disability in two health care systems: access, quality, satisfaction, and physician contacts among working-age Canadians and Americans with disabilities.

Background: An overarching question in health policy concerns whether the current mix of public and private health coverage in the United States can be, in one way or another, expanded to include all persons as it does in Canada. As typically high-end consumers of health care services, people with disabilities are key stakeholders to consider in this debate. The risk is that ways to cover more persons may be found only by sacrificing the quantity or quality of care on which people with disabilities so frequently depend.

Induction of mucosal immunity in the avian Harderian gland with a replication-deficient Ad5 vector expressing avian influenza H5 hemagglutinin.

The chicken Harderian gland (HG) plays an important role in adaptive immune responses upon ocular exposure to avian pathogens such as avian influenza (AI). To determine the role of HGs in generating immunity, chickens were immunized ocularly with an adenovirus (Ad5) vector expressing the AI hemagglutinin H5 gene. The Ad5-H5 vector induced H5 transgene expression and induced H5- and Ad5-specific IgA and IgG spot-forming cells (SFCs) in the HGs.

Endogenous cholecystokinin reduces food intake and increases Fos-like immunoreactivity in the dorsal vagal complex but not in the myenteric plexus by CCK1 receptor in the adult rat.

We hypothesized that endogenous CCK reduces food intake by activating the dorsal vagal complex (DVC) and the myenteric neurons of the gut. To test this hypothesis, adult rats were given camostat mesilate; a nonnutrient releaser of endogenous CCK, by orogastric gavage, and Fos-like immunoreactivity (Fos-LI) was quantified in the DVC and the myenteric plexus. The results for endogenous CCK were compared with those for exogenous CCK-8.

Effect of adrenalectomy on cholecystokinin-8-induced Fos-like immunoreactivity in myenteric neurons and the dorsal vagal complex in rats.

Objective: To investigate the effect of adrenalectomy on cholecystokinin-8 (CCK-8)-induced Fos-like immunoreactivity (Fos-LI) in the myenteric neurons of the dorsal vagal complex (DVC) in rats.

Animals: 16 male Sprague Dawley rats.

Procedures: Rats were allocated to 1 of 2 groups and underwent adrenalectomy or a sham adrenalectomy procedure.

Atropine methyl nitrate increases myenteric but not dorsal vagal complex Fos-like immunoreactivity in the rat.

Atropine methyl nitrate (AMN, 0.05, 0.5 and 25 mg/kg) intraperitoneally increased Fos-like immunoreactivity (Fos-LI) in the myenteric plexus, but not the dorsal vagal complex (DVC, the area postrema (AP), nucleus of the solitary tract (NTS) and the dorsal motor nucleus of the vagus (DMV)) in adult, male Sprague-Dawley rats.

Effect of sympathectomy and demedullation on increased myenteric and dorsal vagal complex Fos-like immunoreactivity by cholecystokinin-8.

Chemical sympathectomy with daily, intraperitoneal (IP) injections of guanethidine sulfate to adult rats, attenuated myenteric, but not dorsal vagal complex (DVC) Fos-like immunoreactivity (Fos-LI) by cholecystokinin-8 (CCK). This technique destroys only 60-70% of the sympathetic neurons, and spares the hormonal source of catecholamines, the adrenal medulla. The goal of the current study is to evaluate the effect of complete sympathectomy or destroying 100% of the sympathetic neurons by injecting guanethidine to 1-day-old pups (40 mg/kg daily for 5 weeks), and surgically removing the adrenal medulla.

Unmet need and problems accessing specialty medical and related services among children with special health care needs.

Objectives: To extend what is known about parent reports of their child's need for specialty medical and related services, unmet need, and specific types of access problems among children with special health care needs (CSHCN).

Methods: Using data from a 1998-1999 20-state survey of families of CSHCN, we examined differences in parent report of need for services by child characteristics, investigated parent report of unmet need and access problems by service area and number of services needed, and estimated the likelihood of four access problems and unmet need by child, family, and health insurance characteristics.

Results: Overall, the sample children had numerous service needs, although the prevalence of need varied by service type and child characteristics.