Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 32
Filter
1.
Intern Emerg Med ; 17(7): 2005-2016, 2022 10.
Article in English | MEDLINE | ID: mdl-36050572

ABSTRACT

Potential secondhand exposure of exhaled constituents from e-vapor product (EVP) use is a public health concern. We present a computational modeling method to predict air levels of exhaled constituents from EVP use. We measured select constituent levels in exhaled breath from adult e-vapor product users, then used a validated computational model to predict constituent levels under three scenarios (car, office, and restaurant) to estimate likely secondhand exposure to non-users. The model was based on physical/thermodynamic interactions between air, vapor, and particulate phase of the aerosol. Input variables included space setting, ventilation rate, total aerosol amount exhaled, and aerosol composition. Exhaled breath samples were analyzed after the use of four different e-liquids in a cartridge-based EVP. Nicotine, propylene glycol, glycerin, menthol, formaldehyde, acetaldehyde, and acrolein levels were measured and reported based on a linear mixed model for analysis of covariance. The ranges of nicotine, propylene glycol, glycerin, and formaldehyde in exhaled breath were 89.44-195.70 µg, 1199.7-3354.5 µg, 5366.8-6484.7 µg, and 0.25-0.34 µg, respectively. Acetaldehyde and acrolein were below detectable limits; thus, no estimated exposure to non-EVP users is reported. The model predicted that nicotine and formaldehyde exposure to non-users was substantially lower during EVPs use compared to cigarettes. The model also predicted that exposure to propylene glycol, glycerin, nicotine and formaldehyde among non-users was below permissible exposure limits.


Subject(s)
Air Pollution, Indoor , Electronic Nicotine Delivery Systems , Acetaldehyde/analysis , Acrolein/analysis , Adult , Aerosols , Air Pollution, Indoor/analysis , Computer Simulation , Exhalation , Formaldehyde/analysis , Glycerol/analysis , Humans , Menthol/analysis , Nicotine/analysis , Propylene Glycol/analysis
2.
J Acad Nutr Diet ; 121(6): 1157-1174.e29, 2021 06.
Article in English | MEDLINE | ID: mdl-34874011

ABSTRACT

Management of food and nutrition systems (MFNS) encompasses the varied roles of registered dietitian nutritionists (RDNs) with administrative responsibilities for food and nutrition services within an organization. RDNs in MFNS are frequently employed in acute care, but also expand into a multitude of other settings in which management of nutrition and foodservice is required, for example, foodservice departments in assisted living and post-acute and long-term care; colleges and universities, kindergarten through grade 12 and pre-kindergarten schools and childcare; retail foodservice operations; correctional facilities; and companies that produce, distribute, and sell food products. RDNs in MFNS aim to create work environments that support high-quality customer-centered care and services, attract and retain talented staff, and foster an atmosphere of collaboration and innovation. The Management in Food and Nutrition Systems Dietetic Practice Group, with guidance from the Academy of Nutrition and Dietetics Quality Management Committee, has revised the Standards of Professional Performance (SOPP) for RDNs in MFNS for 3 levels of practice: competent, proficient, and expert. The SOPP describes 6 domains that focus on professional performance: Quality in Practice, Competence and Accountability, Provision of Services, Application of Research, Communication and Application of Knowledge, and Utilization and Management of Resources. Indicators outlined in the SOPP depict how these standards apply to practice. The standards and indicators for RDNs in MFNS are written with the leader in mind-to support an individual in a leadership role or who has leadership aspirations. The SOPP is intended to be used by RDNs for self-evaluation to assure competent professional practice.


Subject(s)
Dietetics/standards , Nutritionists/standards , Practice Guidelines as Topic , Practice Management/standards , Professional Competence/standards , Scope of Practice , Academies and Institutes , Dietary Services/organization & administration , Dietary Services/standards , Food Services/organization & administration , Food Services/standards , Humans , Quality of Health Care , Societies
3.
Biofabrication ; 12(3): 035019, 2020 06 12.
Article in English | MEDLINE | ID: mdl-32408287

ABSTRACT

High-throughput screening (HTS) is a well-established approach for tumor-specific drug development because of its high efficiency and customizable selection of antineoplastic drugs. However, there is still a lack of an appropriate cell-based HTS specific for migratory cancer cells. In the study presented here, we created a novel assay (mHTS): a single-cell-level screening method targeting migratory cancer cells and can be applied in a high-throughput manner. This mHTS platform is based on microchannel devices (providing physical confinement during cell migration and limit migrating cells' proliferation rate) assembled 96-well plate (fitting to HTS manner). To determine the feasibility of this assay, we quantified the anti-migratory and anti-viability effects of several molecules (Cytochalasin D, Doxorubicin and AZD-6244) on migrating (creeping inside microchannel) glioblastoma multiforme (GBM) cells. After analyzing migration screening data that was collected on a single-cell-level, we were able to compare those drug's effects on cancer cells' migration velocity and uncovered the migration inhibiting potential of AZD (500 nM and 1000 nM). Viability data based on single-cell-level screening also allowed us to further understand the same drug's different lethality toward migrating and normal 2D cultured cancer cells. The Pre-classification of subpopulations enables us to study the heterogeneity of cancer and ensures our method's feasibility for a high-throughput manner. All these results proved our mHTS platform is suitable for single-cell-level anti-migration drug screening and has potential feasibility in promoting the development of anti-migratory-cancer-drug in a high-throughput manner.


Subject(s)
Cell Movement , High-Throughput Screening Assays , Neoplasms/pathology , Animals , Cell Line, Tumor , Cell Survival , Feasibility Studies , Humans , Mice
4.
J Appl Res Intellect Disabil ; 33(4): 654-661, 2020 Jul.
Article in English | MEDLINE | ID: mdl-29761834

ABSTRACT

BACKGROUND: The Armidilo has two scales-the risk scale and the protective scale. Research has been confined to the risk scale which appears to predict future incidents with medium to large effect sizes. There have been no publications on the use of the protective scale. METHODS: The Armidilo was completed on four individuals with IDD who were either moving on from their placement or whose placement was in jeopardy because of new information or altered policies in the organization. The Armidilo was completed in the usual fashion. RESULTS: Risk and protective results show that for each individual, recommendations could be made that ensured the best outcome. For two participants, restrictive placements were avoided because of the data on protective factors. CONCLSIONS: The protective scale can be a powerful support for the clinician's case in offenders with IDD. The protective scale should be completed routinely for clinical evaluation.


Subject(s)
Criminals , Intellectual Disability , Outcome Assessment, Health Care/methods , Psychiatric Status Rating Scales , Psychometrics/instrumentation , Risk Assessment/methods , Sex Offenses , Adult , Humans , Male , Protective Factors , Risk Factors
5.
J Nurs Manag ; 26(5): 540-547, 2018 Jul.
Article in English | MEDLINE | ID: mdl-29243363

ABSTRACT

AIMS: This paper reports on rounding interventions employed at high performing hospitals, and provides three case studies on how proactive nurse rounding was successfully implemented to improve patient-centredness. BACKGROUND: Proactive nurse rounding is a popular form of rounding that has shown promise for improving patient outcomes, yet, little evidence exists on how to implement it successfully. METHODS: We identified high-performing hospitals in the domains of staff responsiveness and nurse communications in the Hospital Consumer Assessment of Health Providers and Systems survey nationally, and conducted case studies at three of these hospitals exploring their implementation of proactive nurse rounding. We partnered with leaders from these hospitals to describe the associated challenges and lessons learned. RESULTS: Twenty-six high performing hospitals in the domains of staff responsiveness and/or nurse communication were identified. The majority of nursing units reported proactive nurse rounding as their main rounding intervention (96%). CONCLUSIONS: Proactive rounding interventions are a feasible approach to help surface and address hospitalized patients' needs in a timely manner. IMPLICATIONS FOR NURSING MANAGEMENT: The information and tools provided in this paper build upon the learning from high performing hospitals' experiences and are useful to nurse leaders in their efforts to improve the patient-centeredness in the hospital.


Subject(s)
Inpatients/statistics & numerical data , Needs Assessment/standards , Nurses/standards , Clinical Competence/standards , Hospitalization/statistics & numerical data , Humans , Nurses/psychology , Organizational Culture , Patient-Centered Care/standards
6.
Psicopedagogia ; 35(107): 217-230, abr. 2018. ilus
Article in Portuguese | LILACS | ID: biblio-956042

ABSTRACT

Algumas lacunas presentes no sistema educacional não contemplam reflexões fundamentais sobre os transtornos de aprendizagem relacionados a diferentes síndromes estudadas e sobre aportes necessários para a recepção da população sindrômica nas escolas. Fazendo uma revisão da literatura, tipo narrativa, este artigo aborda a necessidade de atenção à inclusão integrativa das pessoas com síndrome de Ehlers Danlos-Tipo Hipermobilidade (SED-TH), doença hereditária do tecido conjuntivo, e da benigna Hipermobilidade Articular (HA), pelo fato de alguns estudos tecerem considerações sobre a associação existente entre estas condições e possíveis transtornos de aprendizagem e as limitações apresentadas pelas pessoas com SED-TH e HA. Além de indicar a prevalência e o desconhecimento sobre a síndrome, é apontada a necessidade de um estudo populacional em escolas, visando sua identificação e divulgação. Por meio da integração entre Educação e Saúde e uma abordagem multidisciplinar, seria possível definir estratégias e meios de oferecer atenção diferenciada nas escolas aos sindrômicos e hipermóveis, oportunizando a integração social e impulsionando a aprendizagem, para evitar estigmatizar pessoas nestas condições. A informação e capacitação de educadores, de outros profissionais envolvidos e de familiares são estratégias-chave nesse processo de recepção e integração destes educandos nas escolas e a apresentação de questionários de autoavaliação, guias e manuais voltados para informação de profissionais da área da educação no que se refere à SED-TH e HA destacam-se como possíveis ferramentas, assim como o estabelecimento de parcerias para atendê-los e a utilização das redes públicas de formação de professores para a divulgação e capacitação sobre a SED-TH e HA.


Some gaps in the educational system do not contemplate fundamental reflections on the learning disorders related to the different syndromes studied and about the contributions necessary for the reception of the syndromic population in the schools. A review of literature, narrative type, this article addresses the need for attention to the integrative inclusion of Ehlers Danlos Syndrome-Type Hypermobility (EDS-JH), hereditary connective tissue disease, and benign Articular Hypermobility (JH) due to the fact that some studies make considerations about the association between these conditions and possible learning disordersty and limitations of patients with EDS-JH/ JHS and JH. In addition to indicating the prevalence and lack of knowledge about the syndrome, it is pointed out to the need for a population study in schools, aiming to identify and disseminate it. It is suggested that by integrating Education and Health and multidisciplinary approach aims to boost and highlight strategies and means to provide special attention in schools to the syndromic and hypermobile, providing opportunities for social integration and boosting learning, to avoid stigmatizing people in these conditions. Information and training educators, other professionals and family are key strategies considered in this process of reception and integration of learners in schools and gives priority to raising self-assessment questionnaires; guides and manuals aimed to information and training of education professionals in relation to EDS-JH/JHS and JH stand out as possible tools, as well as the establishment of partnerships to serve them and the use Public Networks teacher training for the dissemination and training on the EDS-JH and JH.

7.
Psicopedagogia ; 32(99): 336-345, 2015.
Article in Portuguese | Index Psychology - journals | ID: psi-68249

ABSTRACT

O presente trabalho faz uma reflexão sobre os caminhos da educação no futuro, centrada na condição humana, sob a égide do princípio da unidade-diversidade proposto por Edgar Morin. Realiza um contraponto entre educação e corporeidade no contexto do sistema oficial de ensino, enfatizando a importância de resgatar o ato motor e o significado da corporeidade em diferentes etapas da educação básica. Reapresenta o papel do corpo como um elemento essencial no processo de aprendizagem e apresenta a valorização da corporeidade e do movimento como estratégias para o sucesso da educação inclusiva e da escola como espaço de convivência, inclusive durante a adolescência, considerando o Ensino Fundamental e Médio. A educação inclusiva é vinculada à busca incessante de proporcionar a autonomia de ser e de saber da(o) educanda(a), valorizando e respeitando o seu conhecimento prévio, sua singularidade e linguagem corporal, visto ser o estudante um sujeito social em construção.(AU)


This work is a reflection on the education of paths in the future, centered on the human condition, under the aegis of the principle of unity-diversity proposed by Edgar Morin. Performs a counterpoint between education and corporeality in the context of the official education system, emphasizing the importance of rescuing the motor act and the meaning of corporeality in different stages of basic education. Restates the body's role as an essential element in the learning process and presents the valuation of corporeality and movement as strategies for the success of inclusive education and the school as living space, including during adolescence, considering the elementary and high school. Inclusive education is linked to the incessant quest to provide autonomy to be and to know the student, valuing and respecting their prior knowledge, their uniqueness and body language, as it is the student a social subject in construction.(AU)


Subject(s)
Mainstreaming, Education , Perception , Body Image , Personal Autonomy
8.
Psicopedagogia ; 32(99): 336-345, 2015.
Article in Portuguese | LILACS | ID: lil-772548

ABSTRACT

O presente trabalho faz uma reflexão sobre os caminhos da educação no futuro, centrada na condição humana, sob a égide do princípio da unidade-diversidade proposto por Edgar Morin. Realiza um contraponto entre educação e corporeidade no contexto do sistema oficial de ensino, enfatizando a importância de resgatar o ato motor e o significado da corporeidade em diferentes etapas da educação básica. Reapresenta o papel do corpo como um elemento essencial no processo de aprendizagem e apresenta a valorização da corporeidade e do movimento como estratégias para o sucesso da educação inclusiva e da escola como espaço de convivência, inclusive durante a adolescência, considerando o Ensino Fundamental e Médio. A educação inclusiva é vinculada à busca incessante de proporcionar a autonomia de ser e de saber da(o) educanda(a), valorizando e respeitando o seu conhecimento prévio, sua singularidade e linguagem corporal, visto ser o estudante um sujeito social em construção.


This work is a reflection on the education of paths in the future, centered on the human condition, under the aegis of the principle of unity-diversity proposed by Edgar Morin. Performs a counterpoint between education and corporeality in the context of the official education system, emphasizing the importance of rescuing the motor act and the meaning of corporeality in different stages of basic education. Restates the body's role as an essential element in the learning process and presents the valuation of corporeality and movement as strategies for the success of inclusive education and the school as living space, including during adolescence, considering the elementary and high school. Inclusive education is linked to the incessant quest to provide autonomy to be and to know the student, valuing and respecting their prior knowledge, their uniqueness and body language, as it is the student a social subject in construction.


Subject(s)
Humans , Body Image , Mainstreaming, Education , Perception , Personal Autonomy
9.
Brain Behav Evol ; 83(4): 247-65, 2014.
Article in English | MEDLINE | ID: mdl-24903559

ABSTRACT

In female grasshoppers, oviposition is a highly specialized behavior involving a rhythm-generating neural circuit, the oviposition central pattern generator, unusual abdominal appendages, and dedicated muscles. This study of Schistocerca americana (Drury) grasshoppers was undertaken to determine whether the simpler pregenital abdominal segments, which do not contain ovipositor appendages, share common features with the genital segment, suggesting a roadmap for the genesis of oviposition behavior. Our study revealed that although 5 of the standard pregenital body wall muscles were missing in the female genital segment, homologous lateral nerves were, indeed, present and served 4 ovipositor muscles. Retrograde labeling of the corresponding pregenital nerve branches in male and female grasshoppers revealed motor neurons, dorsal unpaired median neurons, and common inhibitor neurons which appear to be structural homologues of those filled from ovipositor muscles. Some pregenital motor neurons displayed pronounced contralateral neurites; in contrast, some ovipositor motor neurons were exclusively ipsilateral. Strong evidence of structural homology was also obtained for pregenital and ovipositor skeletal muscles supplied by the identified neurons and of the pregenital and ovipositor skeletons. For example, transient embryonic segmental appendages were maintained in the female genital segments, giving rise to ovipositor valves, but were lost in pregenital abdominal segments. Significant proportional differences in sternal apodemes and plates were observed, which partially obscure the similarities between the pregenital and genital skeletons. Other changes in reorganization included genital muscles that displayed adult hypertrophy, 1 genital muscle that appeared to represent 2 fused pregenital muscles, and the insertion points of 2 ovipositor muscles that appeared to have been relocated. Together, the comparisons support the idea that the oviposition behavior of genital segments is built upon a homologous, segmentally iterated motor infrastructure located in the pregenital abdomen of male and female grasshoppers.


Subject(s)
Grasshoppers/embryology , Motor Neurons/cytology , Oviposition , Animals , Female , Genitalia/innervation , Male , Muscle, Skeletal/embryology , Muscle, Skeletal/innervation , Sex Characteristics
11.
Phytother Res ; 27(9): 1339-44, 2013 Sep.
Article in English | MEDLINE | ID: mdl-23132813

ABSTRACT

Cells belonging to the innate immune system, known as natural killer (NK) cells, act as the first line of defense against developing neoplasms. We have previously shown in a leukemia-induced tumor model (mouse) that a proprietary extract (CVT-E002), of North American ginseng, administered in the diet, significantly increased the absolute numbers of NK cells, significantly decreased leukemia cells and significantly increased the life span of CVT-E002-fed leukemic mice. In the present study, we assessed the efficacy of this extract to inhibit the spontaneous development of tumors in elderly mice of the cancer-prone C3H strain. Dietary CVT-E002 was fed for approximately a year beginning when mice were almost 2 years of age. Control mice, consuming the same chow without CVT-E002, all developed assorted, palpable tumors between 22 and 33 months, while all mice consuming CVT-E002 remained alive and tumor-free until they were purposely euthanized as healthy animals. The absolute numbers of NK cells at euthanasia, in CVT-E002-consuming mice, were significantly elevated in both the spleen and bone marrow. Given these profoundly positive results and the fact that CVT-E002 already exists in the marketplace under the label Cold-fX®, the potential for cancer prevention in humans becomes apparent.


Subject(s)
Diet , Neoplasms/prevention & control , Panax/chemistry , Plant Extracts/pharmacology , Animals , Bone Marrow/immunology , Female , Killer Cells, Natural/immunology , Mice , Mice, Inbred C3H , Neoplasms/drug therapy , Spleen/immunology
12.
Phytother Res ; 26(5): 675-81, 2012 May.
Article in English | MEDLINE | ID: mdl-21997998

ABSTRACT

This study assessed the influences of CVT-E002, a proprietary extract of North American ginseng, Panax quinquefolius (Afexa Life Sciences, Inc., Edmonton, AB, Canada), in vivo, on murine hemopoietic and immune cells when administered as a dietary additive. The extract was given daily to young, adult mice for a period of 4 weeks, immediately following which one group was euthanized and the hemopoietic and immune cells of their bone marrow, spleen and blood were assayed for CVT-E002-mediated alterations in any of five cell lineages (lymphocytes, nucleated erythroid cells, granulocytes, immature granuloid precursors and monocytes). Another group of these mice was left for a subsequent 8 weeks on control diet, following which the same organs and cell lineages were analysed. In another study, juvenile mice immediately upon weaning (age: 4 weeks), were subjected to the above protocol, and their organs/cell lineages assayed. The results revealed that CVT-E002 had a long-lasting, positive quantitative effect on the lymphocytes and monocytes, regardless of age at commencement of daily, dietary CVT-E002. CVT-E002 may therefore have a prophylactic disease defense, immunostimulatory role, or potentially, even a therapeutic role.


Subject(s)
Adjuvants, Immunologic/pharmacology , Hematopoiesis/drug effects , Panax/chemistry , Plant Extracts/pharmacology , Adjuvants, Immunologic/blood , Animals , Animals, Newborn , Bone Marrow/drug effects , Bone Marrow/immunology , Bone Marrow Cells/drug effects , Dietary Supplements , Erythroid Cells/drug effects , Female , Granulocytes/drug effects , Immunity, Innate/drug effects , Lymphocytes/drug effects , Mice , Mice, Inbred C3H , Monocytes/drug effects , Plant Extracts/administration & dosage , Plant Extracts/blood , Plants, Medicinal/chemistry , Pregnancy , Spleen/drug effects , Spleen/immunology , Time Factors
13.
Immunol Invest ; 41(2): 157-70, 2012.
Article in English | MEDLINE | ID: mdl-21815771

ABSTRACT

Cells belonging to the innate immune system are referred to as natural killer (NK) cells. We recently demonstrated that normal, pre-weaned infant mice, injected with a proprietary extract of ginseng (CVT-E002) had augmented NK cell numbers vs. sham-injected mice. In the present study, we extended these observations into juvenile and adult mice. Thus, young adult (age: 8-9 wk) C3H mice were given daily dietary CVT-E002 for 4 wk followed by untreated chow for the following 2 months, then euthanized (age: 20-21 wk). Other C3H mice (juvenile: 4-wk-old) were given CVT-E002 under the same protocol and sampled at 18 wk of age. In spite of withdrawing the extract 2 months earlier, the absolute numbers of NK cells in the young adults, remained significantly (p < 0.01), and slightly, elevated in the spleen and bone marrow (BM), respectively. The relative numbers (%) of NK cells in the blood also remained elevated (p < 0.05). In juvenile mice fed CVT-E002, the absolute numbers (spleen, BM) and % (blood) of NK cells were all elevated (p<0.01 - p<0.05). The mechanisms responsible for these super-normal numbers of NK cells long after withdrawal of CVT-E002, is as yet unknown.


Subject(s)
Dietary Supplements , Killer Cells, Natural/drug effects , Panax/immunology , Plant Extracts/administration & dosage , Animals , Animals, Newborn , Bone Marrow Cells/pathology , Immunity, Innate/drug effects , Killer Cells, Natural/pathology , Lymphocyte Count , Mice , Mice, Inbred C3H , Plant Extracts/adverse effects
14.
Hum Antibodies ; 20(3-4): 83-94, 2011.
Article in English | MEDLINE | ID: mdl-22129678

ABSTRACT

PAR-2 belongs to a family of G-protein coupled Protease-Activated Receptors (PAR) which are activated by specific proteolytic cleavage in the extracellular N-terminal region. PAR-2 is activated by proteases such as trypsin, tryptase, proteinase 3, factor VIIa, factor Xa and is thought to be a mediator of inflammation and tissue injury, where elevated levels of proteases are found. Utilizing the HuCAL GOLD® phage display library we generated fully human antibodies specifically blocking the protease cleavage site in the N-terminal domain. In vitro affinity optimization resulted in antibodies with up to 1000-fold improved affinities relative to the original parental antibodies with dissociation constants as low as 100 pM. Corresponding increases in potency were observed in a mechanistic protease cleavage assay. The antibodies effectively inhibited PAR-2 mediated intracellular calcium release and cytokine secretion in various cell types stimulated with trypsin. In addition, the antibodies demonstrated potent inhibition of trypsin induced relaxation of isolated rat aortic rings ex vivo. In a short term mouse model of inflammation, the trans vivo DTH model, anti-PAR-2 antibodies showed inhibition of the inflammatory swelling response. In summary, potent inhibitors of PAR-2 were generated which allow further assessment of the role of this receptor in inflammation and evaluation of their potential as therapeutic agents.


Subject(s)
Anti-Inflammatory Agents/pharmacology , Antibodies, Blocking/pharmacology , Aorta/drug effects , Hypersensitivity, Delayed/drug therapy , Inflammation/drug therapy , Peptide Library , Receptor, PAR-2/immunology , Trypsin/metabolism , Amino Acid Sequence , Animals , Anti-Inflammatory Agents/chemistry , Anti-Inflammatory Agents/immunology , Antibodies, Blocking/chemistry , Antibodies, Blocking/immunology , Aorta/immunology , Aorta/metabolism , Calcium/metabolism , Enzyme-Linked Immunosorbent Assay , Flow Cytometry , Gene Expression , HEK293 Cells , Humans , Hypersensitivity, Delayed/immunology , Hypersensitivity, Delayed/metabolism , Hypersensitivity, Delayed/pathology , Inflammation/immunology , Inflammation/metabolism , Inflammation/pathology , Kinetics , Macaca fascicularis , Mice , Molecular Sequence Data , Plasmids , Rats , Receptor, PAR-2/antagonists & inhibitors , Receptor, PAR-2/genetics , Receptor, PAR-2/metabolism , Transfection , Trypsin/pharmacology
15.
Inflamm Bowel Dis ; 17(1): 202-12, 2011 Jan.
Article in English | MEDLINE | ID: mdl-20848526

ABSTRACT

BACKGROUND: Recently we found that migration of colonic lamina propria fibroblasts in Crohn's disease patients (CD-CLPF) from inflamed mucosa is significantly reduced as compared to control-CLPF. The behavior of CD-CLPFs isolated from fistulae and strictures was now investigated in detail. METHODS: Initially migration assays for all CLPF cultures (CD-CLPF, fibrosis-CLPF, and fistula-CLPF) were performed in the modified 48-well Boyden chamber. Subsequently, for a migration assay more resembling the in vivo situation a 3D matrix model was developed. After seeding of cells into the 3D matrix the CLPF layer was wounded by an ERBIUM:YAG laser leading to circular cell rupture without effect on the extracellular matrix. RESULTS: In the modified Boyden chamber migration of fistula-CLPF was significantly reduced compared to CD-CLPF. This was correlated with a decrease in FAK-protein expression, whereas in migrating fibrosis-CLPF an increase in FAK-protein expression, -autophosphorylation and migratory potential was found. This was confirmed in the 3D matrix wounding assay: Fistula-CLPF migrated less than CD-CLPF, whereas fibrosis-CLPF migrated significantly more in the 3D matrix wounding assay. Between 1 to 36 hours incubation time fibrosis-CLPF always displayed increased migration ability as compared to CD-CLPF. In contrast, fistula-CLPF migratory potential was always below that of CD-CLPF. CONCLUSIONS: Myofibroblasts isolated from inflamed, fibrostenotic, or fistulized CD mucosa differ in their migratory potential both in the modified Boyden chamber as well as in a 3D matrix model. These different migratory behaviors could be an explanation for impaired or excess wound healing and subsequently for fistula and fibrosis formation.


Subject(s)
Constriction, Pathologic/etiology , Crohn Disease/complications , Fibrosis/etiology , Intestinal Mucosa/pathology , Mucous Membrane/pathology , Myofibroblasts/pathology , Adult , Blotting, Western , Cell Movement , Cells, Cultured , Constriction, Pathologic/metabolism , Constriction, Pathologic/pathology , Crohn Disease/pathology , Crohn Disease/therapy , Female , Fibrosis/metabolism , Fibrosis/pathology , Humans , Intestinal Mucosa/metabolism , Male , Middle Aged , Mucous Membrane/metabolism , Myofibroblasts/metabolism , Prognosis , Wound Healing
16.
Article in English | MEDLINE | ID: mdl-22754952

ABSTRACT

In a recent study involving normal, juvenile mice, we showed that CVT-E002, a proprietary extract (Afexa Life Sciences, Inc.) of North American ginseng, Panax quinquefolius, significantly enhanced the absolute levels of cells acting at the first line of defense in tumor combat, i.e., natural killer (NK) cells. The present study evaluated the effect of CVT-E002, on life span when administered intraperitoneally to leukemic, infant/juvenile mice. The extract was administered to groups of mice daily for 14 days in several dosing groups up to 50mg/day from age 7 to 21 days. The tumor was administered intraperitoneally under sterile conditions, in a laminar flow hood at 7 days of age (0.5 x 10(6) leukemic cells), immediately preceding the first CVT-E002 injection for each dose group. The data revealed that CVT-E002 significantly extends the life of leukemic, young mice in a dose-specific manner, i.e., 20 mg/day was effective in extending life, while lower doses of 5, 10 mg as well as higher doses of 30, 40, 50 mg per day were completely ineffective. We have already shown that CVT-E002 significantly elevates NK cells in normal and leukemic, adult mice, as well as in normal, infant/juvenile mice, and we have also shown that CVT-E002 significantly extends the life span of leukemic, adult mice. The results of the present study did indeed show that (i) CVT-E002 extends the life span of leukemic, infant/juvenile mice, and (ii) that the dose of CVT-E002 is critical in achieving life span augmentation in these leukemic infant/juvenile mice.


Subject(s)
Antineoplastic Agents, Phytogenic/pharmacology , Leukemia/drug therapy , Panax , Plant Extracts/pharmacology , Age Factors , Animals , Animals, Newborn , Disease Models, Animal , Dose-Response Relationship, Drug , Female , Injections, Intraperitoneal , Male , Mice , Mice, Inbred DBA , North America
17.
J Soc Integr Oncol ; 7(4): 127-36, 2009.
Article in English | MEDLINE | ID: mdl-19883528

ABSTRACT

The present study evaluated the dose-related effects of CVT-E002, a proprietary extract of Panax quinquefolius (CV Technologies Inc., Edmonton, AB), in the treatment of a tumor of viral origin, that is, erythroleukemia, in mice. Three treatments including ingestion of 2, 40, and 120 mg/d were compared. The study revealed that the dose of 40 mg/d was particularly effective in stimulating cells mediating nonspecific immunity and extending the life span of tumor-bearing mice. This study represents the first in vivo demonstration of the anticancer efficacy of CVT-E002 in an animal model. CVT-E002 treatment significantly elevated the absolute numbers of natural killer cells and monocytes and reduced the number of tumor cells in the bone marrow and spleen. This study has shown that (1) approximately 30 to 50% of tumor-bearing mice administered CVT-E002 at a dose of 40 mg/d achieved a significantly extended life span, and (2) dosage is critical in producing these ameliorative effects.


Subject(s)
Friend murine leukemia virus , Killer Cells, Natural/drug effects , Leukemia, Erythroblastic, Acute/drug therapy , Monocytes, Activated Killer/drug effects , Plant Extracts/pharmacology , Animals , Bone Marrow/drug effects , Bone Marrow/immunology , Bone Marrow Cells/drug effects , Bone Marrow Cells/immunology , Leukemia, Experimental , Male , Mice , Mice, Inbred DBA , Panax , Plant Extracts/administration & dosage , Specific Pathogen-Free Organisms , Spleen/cytology , Spleen/drug effects , Spleen/immunology , Tumor Cells, Cultured
18.
World J Gastroenterol ; 15(12): 1431-42, 2009 Mar 28.
Article in English | MEDLINE | ID: mdl-19322915

ABSTRACT

AIM: To investigate the effects of transforming growth factor beta 1 (TGF-beta 1) on the differentiation of colonic lamina propria fibroblasts (CLPF) into myofibroblasts in vitro. METHODS: Primary CLPF cultures were incubated with TGF-beta 1 and analyzed for production of alpha-smooth muscle actin (alpha-SMA), fibronectin (FN) and FN isoforms. Migration assays were performed in a modified 48-well Boyden chamber. Levels of total and phosphorylated focal adhesion kinase (FAK) in CLPF were analyzed after induction of migration. RESULTS: Incubation of CLPF with TGF-beta 1 for 2 d did not change alpha-SMA levels, while TGF-beta 1 treatment for 6 d significantly increased alpha-SMA production. Short term incubation (6 h) with TGF-beta 1 enhanced CLPF migration, while long term treatment (6 d) of CLPF with TGF-beta 1 reduced migration to 15%-37% compared to untreated cells. FN and FN isoform mRNA expression were increased after short term incubation with TGF-beta 1 (2 d) in contrast to long term incubation with TGF-beta 1 for 6 d. After induction of migration, TGF-beta 1-preincubated CLPF showed higher amounts of FN and its isoforms and lower levels of total and phosphorylated FAK than untreated cells. CONCLUSION: Long term incubation of CLPF with TGF-beta 1 induced differentiation into myofibroblasts with enhanced alpha-SMA, reduced migratory potential and FAK phosphorylation, and increased FN production. In contrast, short term contact (6 h) of fibroblasts with TGF-beta 1 induced a dose-dependent increase of cell migration and FAK phosphorylation without induction of alpha-SMA production.


Subject(s)
Cell Differentiation/drug effects , Colon/cytology , Colon/physiology , Muscle, Smooth/physiology , Transforming Growth Factor beta1/pharmacology , Actins/drug effects , Actins/genetics , Actins/metabolism , Alternative Splicing , Biopsy , Cell Movement/drug effects , Cells, Cultured , Colon/drug effects , Colon/pathology , Colonoscopy , Colorectal Neoplasms/surgery , Culture Media, Conditioned , Humans , Intestinal Mucosa/cytology , Intestinal Mucosa/drug effects , Intestinal Mucosa/pathology , Intestinal Mucosa/physiology , Muscle, Smooth/cytology , Muscle, Smooth/drug effects , Polymerase Chain Reaction , RNA, Messenger/genetics
19.
J Contin Educ Nurs ; 39(5): 225-7, 2008 May.
Article in English | MEDLINE | ID: mdl-18512583

ABSTRACT

This article discusses Joint Commission on Accreditation of Healthcare Organizations (JCAHO) preparedness. A literature search reveals articles discussing varying tactics for addressing JCAHO preparedness (e.g., mock surveys, crossword puzzles, e-mail and paper updates, games, and pocket resource cards). However, no articles address the use of monthly pretests and posttests. This article focuses on the use of pretests and posttests as well as other interventions to prepare staff for the JCAHO tracer methodology.


Subject(s)
Education, Nursing, Continuing/methods , Educational Measurement , Joint Commission on Accreditation of Healthcare Organizations , Nursing Staff, Hospital/education , Perioperative Nursing/education , Humans , Midwestern United States , United States
20.
SELECTION OF CITATIONS
SEARCH DETAIL
...