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OBJECTIVE: Existing psychosocial research offers little information on the unique challenges and strengths of children adopted from China with cleft lip and/or palate (CL/P). The present study aimed to understand biopsychosocial factors that support positive self-concept in this population. DESIGN: Qualitative, semistructured interviews were conducted with children and their parents. Interpretive phenomenological analysis of transcribed interviews was utilized for data analysis. SETTING: Participants were recruited in an outpatient, pediatric multidisciplinary cleft clinic during a standard team visit. PATIENTS, PARTICIPANTS: Participants were ages 8 to 12 years with a diagnosis of isolated cleft lip-palate who were internationally adopted from China before the age of 2 years and English-speaking. Participants also included English-speaking parents. RESULTS: Themes reflecting data from the child and parent subsamples include: (1) child's characteristics, (2) family strengths, (3) adoption identity, (4) cultural identity, (5) coping with a cleft, and (6) social factors. Additional 2 to 3 subthemes were identified for the parent and child subsamples within each broader theme. CONCLUSIONS: Findings from this sample suggested factors supporting positive self-concept included pride and self-efficacy in activities, family support, instilment of family values, strategies for coping with a cleft, family belonging, cultural exposure, and normalization of differences. Medical providers can support patients and families by providing education on surgeries, CL/P sequelae and outcomes, and pediatric medical stress. Mental health providers can screen for social and emotional challenges and provide psychoeducation on racial/ethnic socialization, identity development, and coping.

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Aims: To investigate the effect of the transverse arytenoid ligament (TAL) on abduction of the arytenoid cartilage when performing laryngoplasty. Methods: Modified prosthetic laryngoplasty was performed on right and left sides of 13 cadaver larynges. Increasing force was sequentially applied to the left arytenoid cartilage at 3 N intervals from 0-24 N, when the force on the right arytenoid cartilage was either 0 or 24 N, before and after TAL transection. Digital photographs of the rostral aspect of the larynx were used to determine the left arytenoid abduction angles for these given force combinations and results compared before and after TAL transection. Longitudinal and transverse sections of the TAL from seven other equine larynges were also examined histologically. Results: Increasing force on the left arytenoid cartilage from 0-24 N produced a progressive increase in the angle of the left arytenoid cartilage (p < 0.001) and increasing force on the right arytenoid cartilage from 0-24 N reduced the angle of the left arytenoid cartilage (p < 0.001). Following transection of the TAL the mean angle of the left arytenoid increased from 36.7 (95% CI = 30.5-42.8)° to 38.4 (95% CI = 32.3-44.5)°. Histological examination showed that the TAL was not a discrete ligament between the arytenoid cartilages but was formed by the convergence of the ligament and the left and right arytenoideus transversus muscles. Conclusions: Transection of the TAL in ex vivo equine larynges enabled greater abduction of the left arytenoid cartilage for a given force. These results indicate that TAL transection in conjunction with prosthetic laryngoplasty may have value, but the efficacy and safety of TAL transection under load in vivo, and in horses clinically affected with recurrent laryngeal neuropathy must be evaluated. Abbreviations: Fmax: Force needed to maximally abduct the left or right arytenoid; TAL: Transverse arytenoid ligament.

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In March of 2014, blackberry (Rubus fruticosus) greenhouse seedlings with leaf symptoms that included yellowing on the leaf surface and reddish brown angular lesions with necrotic centers and chlorotic margins were detected in the University of Arkansas Fruit Research Station in Clarksville, AR (35°32.065' N, 93°24.3564' W). Symptoms were observed on multiple blackberries in the greenhouse, with an estimated prevalence of 25%. Three symptomatic samples of the affected plants were submitted to the Plant Health Clinic in Fayetteville, AR, for diagnosis. Sporulation was observed on the underside of the symptomatic leaf tissue. Hyaline sporangiophores were observed emerging from stomata on the undersides of leaves, 295 to 620 × 4 to 6 µm with long, straight trunks and were branched 3 to 4 times with bifurcated tips, with a length of 5 to 23 µm. Typically, one branch of each pair curved inward and one reflexed. Sporangiophores ended with sporangia that were round or slightly ovoid, colorless to yellowish-brown, and 14 to 22 × 11 to 18 µm. The causal agent was morphologically identified as Peronospora sparsa Berk (1,2). The identification was confirmed using a molecular method directly from plant tissue. DNA was extracted from two samples (~3 × 3 mm) from each of three symptomatic leaves, followed by PCR amplification using P. sparsa-specific rDNA-ITS region primers P1: 5'-CACGTGAACCGTATCAACC-3' and P2: 5'-GATAGGGCTTGCCCAGTAG-3' (GenBank Accession No. Y15816) (4). DNA amplification was successful, resulting in a product of 94 bp, confirming that P. sparsa was present in the symptomatic blackberry tissue. Sporulating leaf tissue was laid on the underside of surface sterilized blackberry leaves from three plants with a similar genetic background and incubated at 17°C with a 12-h photoperiod in a moist chamber. Sporangiophores and sporangia developed on the underside of lesions on previously uninfected leaves 16 days after inoculation. As a control, leaves from the same three plants were surface sterilized and placed in a moist chamber and incubated at 17°C with a 12-h photoperiod and examined 16 days later. No lesions or sporulation developed on the controls. Previously, P. sparsa has been reported on blackberry in California (3) and Mexico (5). To our knowledge, this is the first report of P. sparsa causing downy mildew on blackberry in Arkansas. References: (1) M. J. Berkeley. Gardeners' Chronicle 14:307, 1861. (2) M. A. Ellis. Page 15 in: Compendium of Raspberry and Blackberry Diseases and Insects. APS Press, St. Paul, MN, 1989. (3) D. Farr et al. Page 486 in: Fungi on Plants and Plant Products in the United States. APS Press, St. Paul, MN, 1989. (4) A. Hukkanen et al. Eur. J. Plant Pathol. 116:225, 2006. (5) A. Rebollar-Alviter et al. Plant Dis. 93:674, 2009.

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The magnitude and composition of a region's construction and demolition (C&D) debris should be understood when developing rules, policies and strategies for managing this segment of the solid waste stream. In the US, several national estimates have been conducted using a weight-per-construction-area approximation; national estimates using alternative procedures such as those used for other segments of the solid waste stream have not been reported for C&D debris. This paper presents an evaluation of a materials flow analysis (MFA) approach for estimating C&D debris generation and composition for a large region (the US). The consumption of construction materials in the US and typical waste factors used for construction materials purchasing were used to estimate the mass of solid waste generated as a result of construction activities. Debris from demolition activities was predicted from various historical construction materials consumption data and estimates of average service lives of the materials. The MFA approach estimated that approximately 610-78 × 10(6)Mg of C&D debris was generated in 2002. This predicted mass exceeds previous estimates using other C&D debris predictive methodologies and reflects the large waste stream that exists.

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Osteoporosis has been documented to be a physiologically and psychologically debilitating disease. Health perceptions can be improved through both psychosocial support and specific intervention programs. These programs can improve independence and the quality of life of many people afflicted with this disease.

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OBJECTIVE: H2 receptor antagonist therapy has been shown to produce rebound acid hypersecretion. The clinical significance of this phenomenon is not known. We performed this study to determine whether withdrawal of H2 receptor antagonist therapy results in dyspepsia in previously asymptomatic volunteers. METHODS: Thirty-five Helicobacter pylori-positive asymptomatic volunteers were randomized in double-blind fashion to receive 2 months' treatment with either ranitidine 300 mg nocte or placebo. Dyspeptic symptoms were measured before starting treatment and over the course of 10 days after stopping treatment by means of a validated questionnaire. RESULTS: Thirty-one subjects completed the study; 17 were randomized to ranitidine. The pretreatment median aggregate dyspepsia score of the placebo group was 0 (0-4), as was that of the ranitidine group (0-8) (N.S.). During the 10 days after completion of ranitidine, the median aggregate dyspepsia score was 1.4 (0-30), compared with 0 (0-6.3) after placebo (p < 0.01). Of those given ranitidine, 59% experienced dyspepsia after treatment, compared with only 14% who took placebo. In the subgroup that developed dyspepsia after active therapy, the median duration of symptoms was 2 days, symptom severity being maximal on the second day after completion of the tablets. On the days when dyspepsia was experienced, the median daily dyspepsia score was 5 (range, 2-10), which was similar to that of a control group with active duodenal ulcer disease (5; range, 0-11). CONCLUSIONS: Withdrawal of a 2-month course of ranitidine 300 mg nocte results in the development of dyspeptic symptoms in a proportion of previously asymptomatic subjects. Patients receiving ranitidine should be warned about this rebound dyspepsia and advised not to immediately resume treatment, as rebound symptoms are likely to improve within a few days.

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Telemedicine technology enabled this class to meet. The Chapel Hill instructor could not have traveled to Scotland Neck for the classes, and the class members could not have taken time away from their jobs to travel to Chapel Hill. The technology allowed the participants to fit the classes into their schedules. For the group of managers at this small, isolated hospital, the experience of participating in a management class with an expert was a positive one. They were introduced to standard management practices, learned new skills, and formed a support group/team onsite. The students felt close to the leader, yet the physical distance made her an outsider in a way that encouraged frankness. The technology seemed to foster the best of both worlds--intimacy, yet physical distance and, thus, safety. These new managers were able to take part in a course that taught tangible skills for improving their job performance and, more important, afforded access to resources outside of Halifax County. They were able to step away from their daily routine and interact with outsiders and each other in new ways, without the stress and expense of travel. The results of this pilot study indicate that distance learning is feasible for courses of this kind. Staff burnout and turnover are chronic problems in rural facilities, with isolation contributing to job dissatisfaction. Distance learning offers exciting possibilities for addressing these problems in healthcare settings across the country.

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As long as metered dose inhalers have existed, patients have sought a reliable method to determine if a given canister was still potent. Concerning beta agonists, the answer to this question may be lifesaving. Issues of compliance have made dating canisters or counting doses impractical. Likewise, previous claims of floating characteristics are unreliable. In tap water, we float-tested 13 commonly used inhalers three times each, observing variations as they were incrementally actuated, emptying their contents. One essential pattern was observed. Almost all prescription-size canisters sink when full; all float by the time one-third of their contents is gone. Orientation of prescription-size canisters changes in a distinct pattern especially near 90% depletion. Sample-size canisters showed some variance. Results suggest that the pharmaceutical industry should include individual floating characteristics as part of the package insert as they provide a reproducible means of gauging contents.

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Crohn's disease is often complicated by anaemia. Assessment of iron deficiency may be hampered by modification of the serum ferritin concentration because of the associated acute phase response when disease is active. However a ferritin value of < 5 micrograms/L is indicative of iron deficiency, which is rarely found in Crohns disease.

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Cell line NKL was established from the the peripheral blood of a patient with CD3-CD16+CD56+ large granular lymphocyte (LGL) leukemia. The neoplastic LGL of this patient mediated natural killing and antibody-dependent cellular cytotoxicity (ADCC) and exhibited proliferative responses similar to normal CD16+CD56dim natural killer (NK) cells. The Morphology of NKL cells resembles that of normal activated NK cells. The karyotype of NKL is 47, XY, add (1) (q42), +6 del (6) (q15 q23), del (17) (p11). NKL cells express CD2, CD6, CD11a, CD26, CD27, CD29, CD38, CD43, CD58, CD81, CD94, CD95, class II MHC, and the C1.7.1 antigen, but do not express detectable levels of CD3, CD4, CD5, CD8, CD14, CD19, CD20, CD28, alpha/beta or gamma/delta T cell receptors on the cell surface. The density of the CD16, CD56, and CD57 antigens declined markedly on NKL cells during prolonged im vitro culture. Nevertheless, NKL cells can mediate ADCC as well as natural killing. NKL cells are strictly dependent on interleukin-2 (IL-2) for sustained growth and die if deprived of IL-2 for more than 7 days. NKL cells proliferate in response to concentrations of IL-2 as low as 1 pM, but an optimal proliferative response requires approximately 100 pM IL-2. NKL cells growing in the presence of IL-2 express abundant IL-2R alpha with little or no detectable IL-2 beta or gamma chain on the cell surface; NKL cells deprived of IL-2 express high levels of both IL-2R alpha and beta. IL-4, IL-7, and IL-12, unlike IL-2, do not maintain the viability of NKL cells. Furthermore, IL-1, IL-4, IL-6, IL-7, IL-12, tumor necrosis factor-alpha (TNF-alpha), interferon-alpha (IFN-alpha) and IFN-gamma do not support the growth of NKL cells. The NKL cell line may prove useful for studies of human NK cell biology.

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Despite the importance of natural killer (NK) cells in the immune response, the regulation of human NK cell growth has not been well characterized. We have hypothesized that, similar to the proliferation of T and B lymphocytes, optimal proliferation of NK cells requires costimulatory signals as well as a primary mitogenic stimulus. Evidence for costimulation by both soluble cytokines and cell contact-dependent factors is presented. Soluble IL-1 and TNF were found to augment NK cell proliferation in response to primary mitogenic cytokines, including IL-2, IL-4, IL-7, and IL-12. The costimulatory effect of IL-1 and TNF is strongly enhanced by the calcium ionophore ionomycin. Coculture of NK cells with irradiated K562 cells can largely substitute for the costimulatory signal provided by ionomycin. Costimulation by K562 requires intimate cell contact and is not reconstituted by cell-free supernatants. Activated T lymphocytes can also mediate contact-dependent costimulation of NK cells; resting PBMC, several NK-sensitive cell lines, and all NK-resistant cell lines tested were not found to be costimulatory. Engagement of CD16 did not augment NK cell proliferation. Thus, triggering of natural killing or antibody-dependent cell-mediated cytotoxicity (ADCC) does not consistently provide a costimulatory signal for NK cell proliferation. Cell contact-dependent costimulation of NK cells does not appear to involve known receptors that can costimulate T cells, including CD2, CD27, CD28, CD29, or LFA-1. The molecular nature of the putative NK cell costimulatory receptor remains to be elucidated. Nevertheless, human NK cells could be expanded in vitro using leukocyte-conditioned medium (LCM) as a source of IL-2 and accessory cytokines and ionomycin to bypass the putative receptor for cell contact-dependent costimulation. NK cells expanded in LCM and ionomycin express typical NK cell antigens and mediate natural killing and ADCC. Further characterization of the costimulatory signals for NK cell proliferation may elucidate the physiologic regulation of NK cell growth and may ultimately allow more effective manipulation of these lymphocytes in the immunotherapy of human diseases.

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Evaluation of various methods of drying yew (Taxus) biomass was accomplished. The effect of the separation of the needles from clippings on the taxol content of Taxus plants was noted. Drying clippings intact preserves their taxol content.

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Murine monoclonal antibody (mAb) 7C11 binds to the same cell surface epitope as anti-APO-1 and anti-Fas and reacts specifically with cells transfected with a cDNA encoding the human Fas antigen. Furthermore, incubation with 7C11 causes death of hematopoietic cell lines that express APO-1/Fas but not APO-1/Fas-negative cell lines. 7C11 therefore recognizes the human APO-1/Fas (CD95) antigen, a 40 to 50 kDa cell surface glycoprotein that can trigger apoptosis or programmed cell death. Expression of APO-1/Fas antigen by normal and neoplastic hematopoietic cells was determined by flow cytometry using 7C11. APO-1/Fas is expressed by approximately 30 to 40% of resting peripheral blood T cells, B cells, and monocytes and by approximately 5% of resting NK cells and thymocytes. It was not detected on granulocytes, erythrocytes, or platelets. Approximately 80 to 90% of activated T cells, B cells, and thymocytes express APO-1/Fas, as do the majority of activated NK cells. Perturbation of APO-1/Fas by 7C11 does not affect the viability of resting lymphocytes or monocytes. In contrast, activated T cells and NK cells undergo apoptosis within 3 hours of exposure to 7C11. Other mAb that stimulate T cells or NK cells do not cause rapid induction of programmed cell death. APO-1/Fas antigen is expressed by many cell lines of lymphoid and myeloid lineage. However, this antigen was detected on neoplastic cells from only one of 69 patients with acute myeloid leukemia, acute lymphoblastic leukemia, chronic myelogenous leukemia, chronic lymphocytic leukemia, or multiple myeloma. Only 3 out of 25 tumor samples from patients with non-Hodgkin's lymphoma were found to express APO-1/Fas. All three of these lymphomas harbored the bcl-2-Ig fusion gene associated with the chromosomal translocation t (14;18). Conversely, only 27% of lymphomas that possessed the bcl-2-Ig gene were found to express the APO-1/Fas antigen. Like normal activated lymphocytes, leukemia and lymphoma cells that expressed APO-1/Fas antigen were found to undergo apoptosis in vitro after incubation with 7C11. The APO-1/Fas antigen appears to regulate the growth of normal hematopoietic cells, and the marked upregulation of this antigen on activated normal lymphocytes contrasts sharply with the absence of APO-1/Fas on neoplastic cells of hematopoietic lineage. Defects in the apoptotic signal delivered through this antigen might contribute to the pathogenesis of hematopoietic neoplasms. Thus, the gene encoding APO-1/Fas can be considered a novel type of tumor suppressor gene, just as bcl-2 can be considered a cellular proto-oncogene.

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The goal of this study was to determine if the Community Periodontal Index and Treatment Need (CPITN) screening method can detect an adolescent group at high risk for alveolar bone due to periodontitis. Forty-five Jamaican children, aged 13 years, with a pocket depth exceeding 3.5 mm on at least on index tooth were identified by CPITN for this cohort study. Current periodontal disease was noted by the presence of bleeding upon probing (97.8 percent) and subgingival calculus (41.5 percent) around the index teeth. Digital imaging software was used to analyze the radiographs and indicated alveolar bone loss greater than 2 mm in 93.3 of subjects and greater than 3 mm in 42.2 percent. The CPITN screening method was shown to be valuable as a tool for identifying this high-risk population (AU)

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The goal of this study was to determine if the Community Periodontal Index and Treatment Need (CPITN) screening method can detect an adolescent group at high risk for alveolar bone loss due to periodontitis. Forty-five Jamaican children, age 13 years, with a pocket depth exceeding 3.5mm on at least on index tooth were identified by CPITN for this cohort study. Current periodontal disease was noted by the presence of bleeding upon probing (97.8 percent) and subgingival calculus (41.5 percent) around the index teeth. Digital imaging software was used to analyze the radiographs and indicated alveolar bone loss greater than 2mm in 93.3 percent of subjects and greater than 3mm in 42.2 percent. The CPITN screening method was shown to be valuable as a tool for identifying this high-risk population.(AU)

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Interleukin-12 (IL-12) is a heterodimeric 70-kD cytokine that can enhance the activity of cytotoxic effector cells. Although IL-12 shares some functional properties with interleukin-2 (IL-2), it appears to act via a distinct mechanism. In this report, we examined the effects of IL-12 on the cytolytic activity and proliferation of peripheral blood mononuclear cells (PBMC) obtained from patients with malignant disease. PBMC from two groups of patients were evaluated. The first group consisted of 12 individuals with metastatic solid tumors. PBMC from these patients demonstrated a marked defect in their ability to lyse natural killer (NK)-sensitive targets (K562) compared with normal volunteers. Overnight incubation with IL-12 (35 pmol/L) corrected this defect. The effect of 35 pmol/L of IL-12 on cytotoxicity was similar to that of 3 nmol/L of IL-2. In contrast, this concentration of IL-12 had little effect on cytolytic activity against an NK-resistant cell line (COLO 205). When IL-12 was added to PBMC obtained from cancer patients who were being treated with low-dose IL-2 in vivo, a dramatic increase in cytolytic activity against both NK-sensitive and -resistant tumor targets was observed. Unlike IL-2, IL-12 failed to stimulate proliferation of resting PBMC from cancer patients significantly. The second group of patients we studied comprised 13 patients who had recently undergone allogeneic bone marrow transplantation (BMT) for hematologic malignancy. In resting PBMC from these transplant recipients, IL-12 was capable of enhancing cytotoxicity against both NK-sensitive and -resistant tumor targets. Our findings indicate that IL-12 can restore defective NK activity of PBMC from patients with metastatic cancer, as well as enhance cytolytic function of PBMC from patients after allogeneic BMT. The clinical use of IL-12 as an immunomodulator in patients with malignancy merits further consideration.

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Graft-versus-host disease (GVHD) is a major cause of morbidity and mortality following allogeneic bone marrow transplantation (BMT). Because GVHD is frequently refractory to treatment, the early identification of high-risk patients could have significant clinical value. To identify such patients, we examined early immunologic recovery in 136 patients with hematologic malignancies who received anti-T12 (CD6)-purged allogeneic bone marrow over a 9-year period. The majority of patients received marrow from HLA-matched sibling donors after ablation with cyclophosphamide and total body irradiation. No patients received any immune suppressive medications for GVHD prophylaxis. The fraction and absolute numbers of peripheral blood lymphocytes (PBL) expressing the CD3, CD4, CD8, and CD56 surface antigens were determined weekly by immunofluorescence analysis in patients beginning 8 to 14 days (week 2) after marrow infusion. Results in patients who did or did not subsequently develop GVHD post-BMT were compared. Within 2 weeks of marrow infusion, patients who developed grades 2-4 GVHD had significantly higher percentages and absolute numbers of CD8+ T cells and a lower fraction of CD56+ natural killer (NK) cells than individuals who remained free of GVHD. Thirty-five percent of patients whose PBL were greater than 25% CD8+ in the second posttransplant week developed GVHD, compared with only 3% of patients who had < or = 25% CD8+ cells (odds ratio 37.8; 95% confidence interval [CI] 4.1 to 397). A subgroup of patients at very high risk for GVHD could be identified based on the combined frequency of CD8+ T cells and NK cells in blood. Seventy-five percent of patients with greater than 25% CD8+ cells and < or = 45% CD56+ cells during week 2 post-BMT developed GVHD, compared with only 11% of the remaining patients (odds ratio 24.9; 95% CI, 5.3 to 117.0). None of the 23 patients with both less than 25% CD8+ cells and greater than 45% CD56+ cells in the second posttransplant week developed grades 2-4 GVHD. Our findings indicate that CD8+ T cells play an important role in the pathogenesis of GVHD in humans. Analysis of immune reconstitution early after BMT is useful in predicting the onset of GVHD and can help direct the implementation of treatment strategies before the appearance of clinical manifestations. Such interventions may decrease the morbidity and mortality associated with allogeneic BMT and ultimately improve overall survival.

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