Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 54
Filtrar
Más filtros

Medicinas Tradicionales
Bases de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
J Dairy Sci ; 106(1): 187-201, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36357210

RESUMEN

The periparturient period is a metabolically demanding time for dairy animals because of increased nutrient requirements for milk yield. The objective of this study was to investigate the effect of feeding Saccharomyces cerevisiae boulardii (CNCM I-1079), a commercial active dry yeast (ADY), in dairy cows on productive and metabolic measures during the periparturient period. Primiparous (n = 33) and multiparous (n = 35) cows were fed a close-up total mixed ration (TMR) before calving and a lactation TMR postpartum. Three weeks before expected calving time, animals were blocked by parity and body weight and then randomly assigned to either control group (control; n = 34) or treatment (ADY; n = 34). All animals were housed in a tie-stall barn with individual feed bunks; the ADY animals received supplementary Saccharomyces cerevisiae boulardii (CNCM I-1079), top dressed daily at a predicted dosage of 1.0 × 1010 cfu (12.5 g) per head. Blood samples were collected weekly along with milk yield and milk composition data; feed intake data were collected daily. Serum samples were analyzed for glucose, nonesterified fatty acid, ß-hydroxybutyrate, haptoglobin (Hp), and the cytokines tumor necrosis factor-α, IL-6, and IL-18. Colostrum samples collected within the first 6 to 10 h were analyzed for somatic cell score and IgG, IgA, and IgM concentrations. Data were analyzed using PROC GLIMMIX in SAS with time as a repeated measure; model included time, parity, treatment, and their interactions. The ADY groups had greater milk yield (39.0 ± 2.4 vs. 36.7 ± 2.3 kg/d) and tended to produce more energy-corrected milk with better feed efficiency. There was no difference in plasma glucose, serum nonesterified fatty acid, serum ß-hydroxybutyrate, Hp, IL-6, or IL-18 due to ADY treatment. The tumor necrosis factor-α increased in ADY-supplemented animals (1.17 ± 0.69 vs. 4.96 ± 7.7 ng/mL), though week, parity, and their interactions had no effect. Serum amyloid A tended to increase in ADY-supplemented animals when compared to control animals and was additionally affected by week and parity; there were no significant interactions. No difference in colostrum IgG, IgA, and IgM was observed between treatments. Supplementing transition cow TMR with ADY (CNCM I-1079) improved milk production and tended to improve efficiency in early lactation; markers of inflammation were also influenced by ADY treatment, though the immunological effect was inconsistent.


Asunto(s)
Saccharomyces boulardii , Saccharomyces cerevisiae , Embarazo , Femenino , Bovinos , Animales , Saccharomyces cerevisiae/metabolismo , Interleucina-18/metabolismo , Ácido 3-Hidroxibutírico , Factor de Necrosis Tumoral alfa/metabolismo , Interleucina-6/metabolismo , Dieta/veterinaria , Metabolismo Energético , Lactancia , Leche/metabolismo , Ingestión de Alimentos , Periodo Posparto/metabolismo , Ácidos Grasos no Esterificados , Inmunoglobulina A/metabolismo , Inmunoglobulina G/metabolismo , Inmunoglobulina M , Alimentación Animal/análisis
2.
Hum Reprod ; 34(2): 291-296, 2019 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-30561641

RESUMEN

STUDY QUESTION: What do couples referred to or attending a recurrent pregnancy loss (RPL) clinic believe they need in terms of treatment, support and follow up? SUMMARY ANSWER: Men and women wish for more information, earlier access to treatment, support and follow up that is sensitive to their history of pregnancy loss (PL), includes both members of the couple, and acknowledges the psychological impact of RPL. WHAT IS KNOWN ALREADY: Previous research has highlighted women's dissatisfaction with medical care provided post-PL and their desire for medical professionals to have increased awareness about PL and recognition of the psychological impact of PL. Less is known about the needs of the male partner, the needs of those experiencing RPL and whether the needs differ during different reproductive stages. STUDY DESIGN, SIZE, DURATION: Over a 2-month period in 2017-2018, 13 couples who were referred to the national RPL program in Copenhagen, Denmark were qualitatively interviewed. PARTICIPANTS/MATERIALS, SETTING, METHODS: Inclusion criteria were heterosexual couples with at least three consecutive PLs before 12 weeks' gestation with no children or one child prior to the PLs, not currently pregnant, and willing to be interviewed in English. Couples were interviewed together in a semi-structured format. Data were analyzed using thematic analysis. Invitations (n = 30) were sent to couples recently referred to the RPL program who indicated an interest in participating and 17 couples contacted the interviewer to schedule an interview. Due to cancellations, 15 interviews were held. Data from 13 interviews that met the study criteria were used for the current analysis. MAIN RESULTS AND THE ROLE OF CHANCE: The participants had experienced a median of three PLs (range 3-6). Both men and women described the cumulative effect of RPL with an increase in pressure and exhaustion by the third and subsequent losses. Inclusion of the male partner in consultations and treatment was seen as important. Men felt pressured to remain positive and support their partners despite their own feelings of loss. The findings showed that couples desired reliable and accurate information about RPL. They wished for recognition from the medical community that RPL has a significant psychological impact, and stressed that effective treatment should include both members of the couple, with attention to both physical and psychological aspects of the RPL and should be tailored to their current reproductive stage, in order to help them cope with the negative impact of RPL and the anxiety associated with conception and another pregnancy. LIMITATIONS, REASONS FOR CAUTION: Participants were self-selected thus findings cannot be generalized to all couples with RPL. WIDER IMPLICATIONS OF THE FINDINGS: This is the first study addressing the needs of the female and male partners in couples suffering from RPL. The findings highlight a disconnect between couples' perceived needs and their experience of medical care after RPL. This may be partly due to a discrepancy in couples' and medical professionals' perceptions of the PLs. The findings highlight that medical professionals need to take a holistic and couple-focused approach in their treatment of RPL and include attention to the psychological impact and cumulative effect of the multiple PLs on the couple. The results underscore the need for informational resources and psychological support for couples experiencing RPL, tailored to their reproductive stage. STUDY FUNDING/COMPETING INTEREST(S): EK was funded by a Travel/Training Fellowship from ReproUnion, co-financed by the European Union, Interreg V ÖKS. No other competing interests were declared. TRIAL REGISTRATION NUMBER: N/A.


Asunto(s)
Aborto Habitual/rehabilitación , Adaptación Psicológica , Cuidados Posteriores/psicología , Ansiedad/terapia , Estrés Psicológico , Aborto Habitual/psicología , Acceso a la Información/psicología , Adulto , Ansiedad/etiología , Ansiedad/psicología , Estudios Transversales , Dinamarca , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Embarazo , Sistemas de Apoyo Psicosocial , Investigación Cualitativa , Resultado del Tratamiento
3.
Eur J Vasc Endovasc Surg ; 44(1): 27-30, 2012 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-22560509

RESUMEN

INTRODUCTION: Ultrasound guidance is increasingly used for invasive anaesthetic procedures to improve efficacy, facilitate performance and reduce risk of complications. Herein, we present a simple approach to ultrasound-guided locoregional anaesthesia for patients undergoing eversion carotid endarterectomy. METHODS: At the level of the base of the carotid bifurcation, the needle was inserted at the lateral border of the sternocleidomastoid muscle and, guided by ultrasound, advanced 0.5-1 cm posterolateral to the carotid artery, where ropivacaine (7.5 mg ml(-1)) was injected. During retraction of the needle, additional local anaesthetic was administered beneath the sternocleidomastoid muscle and, finally, subcutaneous infiltration along the surgical incision line was performed. The primary study end point was the amount of additional ropivacaine (7.5 mg ml(-1)) provided intra-operatively. Secondary measures included the occurrence of puncture-related complications and the adverse effects to locoregional anaesthesia. RESULTS: Sixty consecutive patients admitted for primary carotid endarterectomy were prospectively included. The volume of administered ropivacaine for locoregional anaesthesia and subsequent intra-operative supplementation was 31.7 ± 3.5 and 1.9 ± 2.5 ml, respectively. There were no conversions to general anaesthesia. Intravascular or subarachnoid injection of local anaesthetic did not occur, and symptoms of local anaesthetic systemic toxicity did not present. Related to the blockade, hoarseness (72%), Horner syndrome (37%), cough (20%), facial palsy (13%) and dysphagia (12%) were observed and resolved on the first postoperative day. CONCLUSIONS: This observational study demonstrates that the described ultrasound-guided locoregional anaesthesia is suitable for eversion carotid endarterectomy and the amount of supplemental anaesthetic during the surgery is low.


Asunto(s)
Anestesia de Conducción/métodos , Anestesia Local/métodos , Anestésicos Locales/administración & dosificación , Arterias Carótidas/diagnóstico por imagen , Estenosis Carotídea/cirugía , Endarterectomía Carotidea , Monitoreo Intraoperatorio/métodos , Anciano , Estenosis Carotídea/diagnóstico por imagen , Plexo Cervical/ultraestructura , Femenino , Humanos , Inyecciones , Masculino , Bloqueo Nervioso/métodos , Estudios Prospectivos , Reproducibilidad de los Resultados , Ultrasonografía
4.
Eur J Pharm Biopharm ; 79(1): 68-75, 2011 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-21664463

RESUMEN

Treatment of skin diseases implies application of a drug to skin with an impaired epidermal barrier, which is likely to affect the penetration profile of the drug substance as well as the carrier into the skin. To elucidate this, the effect of skin barrier damage on the penetration profile of a corticosteroid applied in solid lipid nanoparticles (SLN) composed of different lipids, varying in polarity, was studied. The studies were carried out in vitro using impaired and intact porcine ear skin, and the SLN were compared with a conventional ointment. It was shown that a significantly higher amount of corticosteroid remained in the skin, intact as well as barrier impaired, when SLN was used as a vehicle. In general, the penetration profile of the drug substance into the skin was affected by the type of lipid used in the formulation and related to lipid polarity and drug substance solubility. When formulated in SLN and applied to intact skin, the permeation of the drug substance across the skin was significantly reduced, as compared to the ointment. Altogether, in both barrier-impaired and intact skin, a higher amount of drug substance remained in the skin during application of SLN for 6, 16, and 24h, as compared to the ointment. These results emphasize the applicability of SLN to create a drug reservoir in skin, with the drug localized distinctively in the stratum corneum.


Asunto(s)
Portadores de Fármacos/química , Sistemas de Liberación de Medicamentos , Excipientes/química , Lípidos/química , Nanopartículas/química , Piel/metabolismo , Administración Tópica , Animales , Antiinflamatorios/análisis , Antiinflamatorios/química , Antiinflamatorios/metabolismo , Valerato de Betametasona/análisis , Valerato de Betametasona/química , Valerato de Betametasona/metabolismo , Portadores de Fármacos/metabolismo , Composición de Medicamentos , Evaluación Preclínica de Medicamentos , Oído/fisiología , Excipientes/metabolismo , Lípidos/análisis , Nanopartículas/análisis , Pomadas/química , Pomadas/metabolismo , Tamaño de la Partícula , Permeabilidad , Polisorbatos/química , Polisorbatos/metabolismo , Piel/lesiones , Piel/patología , Absorción Cutánea/fisiología , Solubilidad , Tensoactivos/química , Porcinos
5.
Br J Anaesth ; 102(2): 221-6, 2009 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19074153

RESUMEN

BACKGROUND: This study tested the circulatory effectiveness of post-trauma administration of a large intravascular volume expander, hydroxyethyl starch 130/0.4 (HES), vs standard lactated Ringer's solution (RL). METHODS: Liver injury was inflicted in 14 pigs [31 (4) kg; mean (sd)] and treatment simulated an acute pre-hospital event: after a standard first-respond delay (7 min), volume administration was provided in three phases to simulate increasing intravascular access. In the first two phases, the fluid was administered either by HES or by RL and, during the last phase, all animals received HES to stabilize the intravascular volume. RESULTS: The liver trauma severed an equal number of 1-3 mm diameter blood vessels [1.4 (0.6)] and after 7 min, the blood loss was 184 (127) ml and mean arterial pressure had decreased by 19 (13) mm Hg (P<0.01). The intravascular volume expansion effect was 115 (25)% for HES and 76 (21)% for RL (P<0.05), yet oxygen uptake was maintained in zero of seven vs three of seven pigs and the survival was three of seven vs seven of seven, respectively (P<0.05). In these animals, the initial administration of HES provoked uncontrolled bleeding, whereas the administration of RL was associated with attenuated bleeding: total blood loss 2455 (1919) vs 311 (208) ml, respectively (P<0.01), reflecting that bleeding ceased in six of the pigs administered RL. CONCLUSIONS: After injury, the intravascular volume expanding effect of HES was larger than that for RL. However, initial administration of HES provoked uncontrolled haemorrhage, suggesting that prioritizing intravascular volume expansion did not result in stabilization of the circulation after haemorrhage.


Asunto(s)
Derivados de Hidroxietil Almidón/uso terapéutico , Soluciones Isotónicas/uso terapéutico , Hígado/lesiones , Sustitutos del Plasma/uso terapéutico , Animales , Evaluación Preclínica de Medicamentos/métodos , Fluidoterapia/efectos adversos , Fluidoterapia/métodos , Hemodinámica , Hemorragia/etiología , Hemorragia/fisiopatología , Hemorragia/terapia , Derivados de Hidroxietil Almidón/efectos adversos , Soluciones Isotónicas/efectos adversos , Hepatopatías/etiología , Hepatopatías/fisiopatología , Hepatopatías/terapia , Consumo de Oxígeno , Sustitutos del Plasma/efectos adversos , Lactato de Ringer , Sus scrofa , Tromboelastografía/métodos
6.
Allergy Asthma Proc ; 26(6): 470-6, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-16541972

RESUMEN

Although several reports suggest that bee venom may be an effective treatment for patients with multiple sclerosis (MS), patients may be subjected to real risks of serious allergic reactions as well as emotional and economic costs. This study was conducted to evaluate the safety of bee venom extract as a possible treatment for patients with progressive forms of MS. A total of nine bee venom nonallergic patients with progressive forms of MS, who were 21-55 years of age with no other illnesses, were entered into four groups (A, B, C, and D) on a structured 1-year immunization schedule. Hyperreactivity to bee venom was evaluated by questionnaire, physical examination, and a battery of hematologic, metabolic, and immunologic tests. Responses to therapy were evaluated by questionnaire, functional neurological tests, and changes in measurement of somatosensory-evoked potentials. Although no serious adverse allergic reactions were observed in any of the nine subjects, four experienced worsening of neurological symptoms, requiring termination in the study; this could not be ascribed to side effects of the therapy. Of the remaining five subjects, three felt that the therapy had subjective amelioration of symptoms and two showed objective improvement. Although this preliminary study suggests safety, because of the small numbers studied, there were no definite conclusions regarding efficacy and therefore there was little evidence to support the use of honeybee venom in the treatment of MS. Larger and more carefully conducted multicenter studies will be required to establish efficacy.


Asunto(s)
Venenos de Abeja/uso terapéutico , Esclerosis Múltiple Crónica Progresiva/tratamiento farmacológico , Adulto , Venenos de Abeja/efectos adversos , Venenos de Abeja/inmunología , Femenino , Humanos , Inmunoglobulina E/sangre , Masculino , Persona de Mediana Edad , Esclerosis Múltiple Crónica Progresiva/inmunología , Esclerosis Múltiple Crónica Progresiva/fisiopatología , Pruebas Cutáneas , Resultado del Tratamiento
7.
Clin Oncol (R Coll Radiol) ; 15(1): 17-24, 2003 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-12602550

RESUMEN

AIM: It is often complicated to include the internal mammary lymph nodes in the radiation field after breast-conserving therapy. Using the wide tangent technique the internal mammary lymph nodes are generally presumed to be included if the medial tangential field border is placed 3 cm across the midline. The current study was designed to test the validity of this assumption, and if possible, to correct the wide tangents without using computed tomography (CT) scanning. PATIENTS AND METHODS: Twenty-one consecutive, high-risk, post-lumpectomy patients were included. An arrangement of three copper wires was mounted in wax placed perpendicular to the skin surface at the ipsilateral border of sternum at intercostal spaces 2 to 4. During a standard simulation for wide tangents, it was examined if the length of the copper wires projected beneath the skin surface (representing the depth of the internal mammary lymph nodes, measured by ultrasound) were included in the wide tangent fields. RESULTS: In only one patient were the internal mammary lymph nodes covered by the wide tangent technique. In 14 of the remaining 20 patients the lateral tangential field border was subsequently moved in the posterior direction, and the internal mammary lymph nodes could be included without unacceptable normal tissue involvement. In the last six patients the irradiated heart and lung volumes exceeded acceptable tolerance levels with this correction, and these patients were referred for three-dimensional CT dose planning. CONCLUSION: The presented simple technique may be helpful if CT scanning is not available. In all other cases CT-based dose plan should ideally be used as a standard in the planning of radiotherapy after breast-conserving surgery to assure optimal inclusion of the relevant target, and to avoid irradiation of large volumes of critical normal tissue.


Asunto(s)
Neoplasias de la Mama/radioterapia , Ganglios Linfáticos , Irradiación Linfática , Planificación de la Radioterapia Asistida por Computador , Adulto , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/cirugía , Femenino , Humanos , Imagenología Tridimensional , Ganglios Linfáticos/diagnóstico por imagen , Mastectomía Segmentaria , Persona de Mediana Edad , Radioterapia Adyuvante , Tomografía Computarizada por Rayos X
8.
BJU Int ; 90(9): 853-62, 2002 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-12460345

RESUMEN

OBJECTIVE: To compare the efficacy and frequency of complications of transurethral interstitial laser coagulation (ILC) and transurethral microwave thermotherapy (TUMT) with transurethral resection or incision of the prostate (TURP/TUIP) in patients with symptomatic benign prostatic hyperplasia (BPH). PATIENTS AND METHODS: Forty-eight patients were randomized to undergo ILC, 46 to TUMT and 24 to TURP/TUIP; they were followed for 6 months and the outcome analysed on an intention-to-treat basis. RESULTS: At 6 months the symptom scores and maximum urinary flow rate (Qmax) had improved significantly in all groups. At 6 months the mean symptom score was 9.2 in both experimental groups and 6.8 in the control group (P > 0.05); the mean Qmax was 20.6 mL/s in the control group, 16.2 in the ILC group (P > 0.05 vs control) and 13.2 in the TUMT group (P < 0.05 vs. the control group). In the TUMT group patients developing urinary retention afterward had a significantly greater increase in Qmax than those who did not. The types of complications in the three groups varied. Urinary tract infection occurred frequently in the experimental groups, especially after ILC, whereas the 'well-known' complications of TURP occurred in the control group. Overall, 36% in the ILC, 54% in the TUMT and 73% in the control group had no complications (retrograde ejaculation excluded) during the first 6 months. One patient in the TUMT group underwent TURP after 3 months, whereas no patients in the ILC or the con-trol group were re-treated for BPH within the first 6 months. CONCLUSION: In the short term both ILC and TUMT are reasonable alternatives to standard transurethral surgery for symptomatic BPH, where the reduction of symptoms is the primary goal of treatment. However, both ILC and TUMT were associated with morbidity, although the complication profiles differed from those after TURP/TUIP. Both ILC and TUMT seem advantageous in some patients because of the reduced risk of bleeding and the eliminated risk of TUR syndrome, and because TUMT only requires local anaesthesia. Thus, as neither treatment is better in all aspects, the advantages of one technique over the other must be weighed when deciding how to treat each patient.


Asunto(s)
Hipertermia Inducida/normas , Coagulación con Láser/normas , Hiperplasia Prostática/terapia , Resección Transuretral de la Próstata/normas , Anciano , Estudios de Seguimiento , Humanos , Hipertermia Inducida/efectos adversos , Coagulación con Láser/efectos adversos , Masculino , Microondas/uso terapéutico , Persona de Mediana Edad , Hiperplasia Prostática/cirugía , Resección Transuretral de la Próstata/efectos adversos , Resultado del Tratamiento
9.
Scand J Urol Nephrol ; 36(4): 286-95, 2002.
Artículo en Inglés | MEDLINE | ID: mdl-12201922

RESUMEN

OBJECTIVES: To compare the short-term cost-effectiveness of ILC and TUMT with that of transurethral resection or incision of the prostate in patients with symptomatic benign prostatic hyperplasia. MATERIAL AND METHODS: One hundred and eighteen patients were randomized to ILC, TUMT and TUR-P/TUI-P in 2:2:1 fashion. The use of resources within the first 6 months of follow-up were measured and the cost of treatment for each patient were calculated. A few parameters, primarily related to the time spent by the staff, were measured only in a subgroup of patients. A cost-effectiveness analysis was performed based on the average calculated cost and change in I-PSS found in each group. For costly resources a sensitivity analysis was performed. RESULTS: At 6 months the cost was lowest in the TUMT group and highest in the ILC group. The cost-effectiveness ratio (C/E) was 763 DKK/point reduction in I-PSS in the control group and 1.200 and 938 in the ILC and TUMT group, respectively. An incremental analysis demonstrated that TUR-P/TUI-P dominated ILC. In a similar comparison of the TUMT and the TUR-P/TUI-P group an incremental ratio of 170 DKK/extra point of reduction in I-PSS was found in the TUR-P/TUI-P group. CONCLUSION: In the short-term TUMT and TUR-P has comparable cost-effectiveness. TUR-P was slightly more effective than TUMT, but the cost was also slightly higher. In our set-up of ILC the short-term cost-effectiveness of ILC was inferior to that of TUR-P. Conclusions should be made with caution, since the follow-up at present is short.


Asunto(s)
Hipertermia Inducida/economía , Microondas/uso terapéutico , Prostatectomía/economía , Hiperplasia Prostática/economía , Hiperplasia Prostática/terapia , Resección Transuretral de la Próstata/economía , Anciano , Análisis Costo-Beneficio , Estudios de Seguimiento , Humanos , Hipertermia Inducida/métodos , Masculino , Persona de Mediana Edad , Probabilidad , Prostatectomía/métodos , Hiperplasia Prostática/patología , Estadísticas no Paramétricas , Resultado del Tratamiento
10.
APMIS ; 109(11): 735-44, 2001 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11900052

RESUMEN

The aim of this study was to select an effective and stable protocol for the differentiation of human satellite cells (Sc) and to identify the optimal time period for the experimental use of differentiated human Sc-cultures. In order to identify the differentiation conditions which give a good survival of myotubes and a high grade of differentiation, Sc-cultures were induced to differentiate in media supplemented with either 2% fetal calf serum (FCS) 2% horse serum (HS) or 10% HS. Based on higher CK-activities in cultures differentiating in FCS-supplemented media compared to horse sera, fetal calf serum was chosen to induce differentiation. The ATP, DNA and protein content increased during the first 4 days after induction of differentiation and was followed by a period with minor changes. The maximal differences of ATP, DNA and protein between days 4-10 were evaluated and the differences in the three components were found to be less than 20% of the average value with a certainity of more than 0.9. Day 8-myotubes were investigated morphologically and were found immunoreactive for fast myosin, and expressed areas with clear cross striation. We recommend the use of differentiated Sc-cultures in the period from day 4 to 8 after induction of differentiation as only minor differentation-related changes will take place in the cells during this period of time.


Asunto(s)
Modelos Biológicos , Músculo Esquelético/citología , Células Madre/citología , Adenosina Trifosfato/metabolismo , Diferenciación Celular , Células Cultivadas , Creatina Quinasa/metabolismo , Forma MM de la Creatina-Quinasa , ADN/metabolismo , Humanos , Inmunohistoquímica , Isoenzimas/metabolismo , Microscopía Electrónica , Proteínas Musculares/metabolismo , Músculo Esquelético/metabolismo , Miosinas/metabolismo , Células Madre/metabolismo
12.
Plant Mol Biol ; 44(6): 799-814, 2000 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-11202441

RESUMEN

Arabidopsis proteins were predicted which share an 80 residue zinc finger domain known from ADP-ribosylation factor GTPase-activating proteins (ARF GAPs). One of these is a 37 kDa protein, designated ZAC, which has a novel domain structure in which the N-terminal ARF GAP domain and a C-terminal C2 domain are separated by a region without homology to other known proteins. Zac promoter/beta-glucuronidase reporter assays revealed highest expression levels in flowering tissue, rosettes and roots. ZAC protein was immuno-detected mainly in association with membranes and fractionated with Golgi and plasma membrane marker proteins. ZAC membrane association was confirmed in assays by a fusion between ZAC and the green fluorescence protein and prompted an analysis of the in vitro phospholipid-binding ability of ZAC. Phospholipid dot-blot and liposome-binding assays indicated that fusion proteins containing the ZAC-C2 domain bind anionic phospholipids non-specifically, with some variance in Ca2+ and salt dependence. Similar assays demonstrated specific affinity of the ZAC N-terminal region (residues 1-174) for phosphatidylinositol 3-monophosphate (PI-3-P). Binding was dependent in part on an intact zinc finger motif, but proteins containing only the zinc finger domain (residues 1-105) did not bind PI-3-P. Recombinant ZAC possessed GTPase-activating activity on Arabidopsis ARF proteins. These data identify a novel PI-3-P-binding protein region and thereby provide evidence that this phosphoinositide is recognized as a signal in plants. A role for ZAC in the regulation of ARF-mediated vesicular transport in plants is discussed.


Asunto(s)
Factores de Ribosilacion-ADP/metabolismo , Arabidopsis/metabolismo , Proteínas Activadoras de GTPasa/metabolismo , Proteínas de la Membrana/metabolismo , Fosfolípidos/metabolismo , Factores de Ribosilacion-ADP/genética , Secuencia de Aminoácidos , Arabidopsis/genética , Sitios de Unión , Unión Competitiva , ADN Complementario/química , ADN Complementario/genética , Etiquetas de Secuencia Expresada , Proteínas Activadoras de GTPasa/genética , Expresión Génica , Proteínas de la Membrana/genética , Datos de Secuencia Molecular , Unión Proteica , ARN Mensajero/genética , ARN Mensajero/metabolismo , Proteínas Recombinantes de Fusión/genética , Proteínas Recombinantes de Fusión/metabolismo , Alineación de Secuencia , Análisis de Secuencia de ADN , Homología de Secuencia de Aminoácido , Distribución Tisular , Dedos de Zinc
13.
J Arthroplasty ; 14(3): 312-8, 1999 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-10220185

RESUMEN

Reinfusion of postoperative wound drainage blood has become an attractive alternative in primary total knee and hip arthroplasty. Quality of the drainage blood was studied with respect to content of extracellular bioactive substances and coagulation split products. Using the HandyVac ATS autotransfusion system, drainage blood was collected and reinfused within 6 hours postoperatively from 10 patients undergoing primary total knee arthroplasty. Blood samples were collected from the patients immediately after and 1 hour after opening of the tourniquet and after reinfusion of drainage blood. Samples were also collected from the drainage blood immediately before and at the end of reinfusion. The leukocyte-derived and platelet-derived bioactive substances histamine, eosinophil cationic protein (ECP), eosinophil protein X (EPX), myeloperoxidase (MPO), plasminogen activator inhibitor type 1 (PAI-1), and activated complement factor C3(C3a) and various coagulation factors and split products were analyzed in patient and drainage blood samples. None of the patients received additional predonated autologous blood or allogeneic blood components during the study period. Within 6 hours postoperatively, 250 to 1,000 mL drainage blood was collected and reinfused. Histamine, ECP, EPX, MPO, PAI-1, and C3a content was significantly increased in drainage blood immediately before and at the end of reinfusion. Reinfusion did not change the concentration of these substances in samples from the patients. Coagulation factors and various split products showed that drainage blood was defibrinated. Reinfusion of drainage blood did not change the coagulative capacity of the patients. Drainage blood appears to be defibrinated and contains various extracellular leukocyte-derived and platelet-derived bioactive substances. Reinfusion does not change the coagulative capacity or the concentration of bioactive substances of patients.


Asunto(s)
Artroplastia de Reemplazo de Rodilla , Pérdida de Sangre Quirúrgica , Transfusión de Sangre Autóloga/normas , Factores de Coagulación Sanguínea/análisis , Humanos , Factores de Tiempo
14.
Eur J Surg Oncol ; 25(2): 179-85, 1999 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-10218462

RESUMEN

AIMS: To determine the toxicity and efficacy of isolated hepatic perfusion with tumour necrosis factor alpha (TNF-alpha) and melphalan (Alkeran) under mild hyperthermic conditions. METHODS: A phase I trial was performed. Eleven patients with unresectable metastatic malignancies in the liver were pre-treated with 3 x 10(6) U leukocyte IFN daily 2 days before the perfusion. The liver was isolated and inflow catheters inserted in the hepatic artery and the portal vein. The hepatic veins were drained via a catheter in the retrohepatic caval vein. The venous blood flow from the lower extremities and the splanchnic circulation was bypassed to the axillar vein. The liver circuit was perfused with oxygenated blood and 30-200 microg TNF-alpha was added. At 39 degrees C in the liver circuit 0.5 mg/kg melphalan was added and the perfusion was continued for 1 h. RESULTS: Six patients underwent re-operation due to post-operative bleeding. Two patients died of coagulopathy or multiple organ failure within the first post-operative month. Three of six patients with liver metastases from malignant melanoma or leiomyosarcoma showed a partial response while no patients with liver metastases from colorectal cancer showed any response. The mean survival time was 20 months, which is within the same range as seen in previous isolated hepatic perfusion (IHP) studies. CONCLUSIONS: IHP with this drug regimen is a method with a considerable toxicity, though it is hard to distinguish between toxicity from TNF-alpha and that from the perfusion procedure itself. The method was not effective in patients with colorectal liver metastasis, but the results in melanoma and leiomyosarcoma patients warrant further studies.


Asunto(s)
Antineoplásicos/uso terapéutico , Quimioterapia del Cáncer por Perfusión Regional , Oxigenación por Membrana Extracorpórea , Arteria Hepática , Hipertermia Inducida , Neoplasias Hepáticas/terapia , Melfalán/uso terapéutico , Factor de Necrosis Tumoral alfa/uso terapéutico , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos Alquilantes/uso terapéutico , Neoplasias Colorrectales/patología , Femenino , Humanos , Leiomiosarcoma/secundario , Neoplasias Hepáticas/diagnóstico por imagen , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/secundario , Masculino , Melanoma/secundario , Persona de Mediana Edad , Radiografía
15.
Plant Mol Biol ; 38(5): 725-34, 1998 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-9862490

RESUMEN

A cDNA encoding CYP79B1 has been isolated from Sinapis alba. CYP79B1 from S. alba shows 54% sequence identity and 73% similarity to sorghum CYP79A1 and 95% sequence identity to the Arabidopsis T42902, assigned CYP79B2. The high identity and similarity to sorghum CYP79A1, which catalyses the conversion of tyrosine to p-hydroxyphenylacetaldoxime in the biosynthesis of the cyanogenic glucoside dhurrin, suggests that CYP79B1 similarly catalyses the conversion of amino acid(s) to aldoxime(s) in the biosynthesis of glucosinolates. Within the highly conserved 'PERF' and the heme-binding region of A-type cytochromes, the CYP79 family has unique substitutions that define the family-specific consensus sequences of FXP(E/D)RH and SFSTG(K/R)RGC(A/I)A, respectively. Sequence analysis of PCR products generated with CYP79B subfamily-specific primers identified CYP79B homologues in Tropaeolum majus, Carica papaya, Arabidopsis, Brassica napus and S. alba. The five glucosinolate-producing plants identified a CYP79B amino acid consensus sequence KPERHLNECSEVTLTENDLRFISFSTGKRGC. The unique substitutions in the 'PERF' and the heme-binding domain and the high sequence identity and similarity of CYP79B1, CYP79B2 and CYP79A1, together with the isolation of CYP79B homologues in the distantly related Tropaeolaceae, Caricaceae and Brassicaceae within the Capparales order, show that the initial part of the biosynthetic pathway of glucosinolates and cyanogenic glucosides is catalysed by evolutionarily conserved cytochromes P450. This confirms that the appearance of glucosinolates in Capparales is based on a cyanogen 'predisposition'. Identification of CYP79 homologues in glucosinolate-producing plants provides an important tool for tissue-specific regulation of the level of glucosinolates to improve nutritional value and pest resistance.


Asunto(s)
Aminoácidos/metabolismo , Proteínas de Arabidopsis/genética , Sistema Enzimático del Citocromo P-450/genética , Glucósidos/biosíntesis , Glucosinolatos/biosíntesis , Oxigenasas de Función Mixta/genética , Oximas/metabolismo , Plantas/enzimología , Secuencia de Aminoácidos , Proteínas de Arabidopsis/metabolismo , Clonación Molecular , Secuencia de Consenso , Secuencia Conservada , Sistema Enzimático del Citocromo P-450/metabolismo , ADN de Plantas/química , ADN de Plantas/genética , ADN de Plantas/aislamiento & purificación , Escherichia coli/genética , Evolución Molecular , Regulación Bacteriana de la Expresión Génica , Regulación de la Expresión Génica de las Plantas , Oxigenasas de Función Mixta/metabolismo , Datos de Secuencia Molecular , Planta de la Mostaza/enzimología , Planta de la Mostaza/genética , Planta de la Mostaza/metabolismo , Filogenia , Plantas/genética , Plantas/metabolismo , Plantas Medicinales , Homología de Secuencia de Aminoácido
16.
Spine (Phila Pa 1976) ; 23(3): 311-8; discussion 319, 1998 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-9507618

RESUMEN

STUDY DESIGN: A randomized, prospective clinical study was conducted that included 119 patients with chronic neck pain of greater than 3 months' duration. OBJECTIVES: To compare the relative effectiveness of intensive training of the cervical musculature, a physiotherapy treatment regimen, and chiropractic treatment on this patient group. SUMMARY OF BACKGROUND DATA: There are only a few studies involving chronic neck pain patients representative of those seeking care in primary health care centers. Mobilization techniques and intensive training have been shown to be useful, but cervical manipulation has not been assessed. Clinical results involving these commonly used therapies have not been compared. METHODS: A total of 167 consecutive patients were screened. One hundred nineteen patients were admitted to the study and were randomized according to Taves' minimization principles. Primary outcome measures included self-reported pain, disability, medication use, patients' perceived effect, and physician's global assessment. Patients were assessed at enrollment and at completion of the study. Postal questionnaires were used to carry out 4- and 12-month follow-up assessments. Secondary outcome measures included active range of motion of the cervical spine as well as strength and endurance measurements of the cervical musculature. These measurements were carried out at enrollment and completion of the study. RESULTS: A total of 88% of the patients completed the study. Of these, 97% completed the 4-month questionnaire and 93% the 12-month questionnaire. Patients from all three groups demonstrated significant improvements regarding self-reported pain and disability on completion of the study. Improvements were maintained throughout the follow-up period. Medication use was also significantly reduced in all groups. There was, however, no significant difference between groups at any assessment period. Physician's and patients' assessments were also positive, and again group scores were essentially equal. Patients who underwent intensive training demonstrated significantly greater endurance levels at the completion of treatment. CONCLUSIONS: There was no clinical difference between the three treatments. All three treatment interventions demonstrated meaningful improvement in all primary effect parameters. Improvements were maintained at 4- and 12-month follow-up. However, whether this was a result of the treatments or simply a result of time is unknown. Future studies will be necessary to delineate ideal treatment strategies.


Asunto(s)
Terapia por Ejercicio , Manipulación Ortopédica , Dolor de Cuello/rehabilitación , Modalidades de Fisioterapia , Adulto , Quiropráctica , Enfermedad Crónica , Evaluación de la Discapacidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Estudios Prospectivos , Método Simple Ciego , Resultado del Tratamiento
17.
Pediatr Res ; 41(1): 44-50, 1997 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-8979288

RESUMEN

Correlations between knemometric (lower leg length) growth rates and urine free cortisol excretion, respectively, and serum concentrations of IGF-I, IGF binding protein-3, osteocalcin, carboxy terminal propeptide of type I collagen (PICP), carboxy terminal pryridinoline cross-linked telopeptide of type I procollagen (ICTP), and amino terminal propeptide of type III procollagen (PIIINP) were investigated in 17 asthmatic children aged 7-14 y during treatment with fluticasone propionate, 200 micrograms, and beclomethasone dipropionate, 400 and 800 micrograms/d, taken from dry powder inhalers. The study was a double blind, crossover trial with three active treatment periods and two wash-out periods. All periods were 15 d long. Overnight urine free cortisol/ creatinine x 10(6) did not correlate with knemometric growth rates or any of the serum markers. Significant correlations (Pearson's correlation coefficient, P) between knemometric growth rates and IGF-I (0.41; 0.006), IGFBP-3 (0.35; 0.02), PICP (0.44; 0.003), ICTP (0.35; 0.001), and PIIINP (0.46; 0.002) were found. Compared with fluticasone propionate, 200 micrograms, beclomethasone dipropionate, 400 and 800 micrograms, caused significant suppression of lower leg growth rate (F = 12.41; p = 0.002, and F = 23.30; p = 0.0001, respectively) and of urine free cortisol/creatinine x 10(6) (F = 10.52; p = 0.003, and F = 13.74; p = 0.001). Beclomethasone, 800 micrograms, caused suppression of PICP compared with fluticasone propionate, 200 micrograms (F = 8.31; p = 0.008), and beclomethasone, 400 micrograms (F = 7.53; p = 0.01). Both low (F = 6.82; p = 0.02) and high (F = 23.35; p = 0.0001) doses of beclomethasone were associated with reduced concentrations of ICTP, the high dose being the most suppressive (F = 4.42; p = 0.05). Beclomethasone 400 (F = 9.75; p = 0.004) and 800 micrograms (F = 23.61; p = 0.0001) resulted in reduced levels of PIIINP. Reduced short-term knemometric growth rates in children treated with inhaled glucocorticosteroids reflect suppressive effects on type I and type III collagen turnover.


Asunto(s)
Androstadienos/efectos adversos , Antiasmáticos/efectos adversos , Beclometasona/efectos adversos , Colágeno/metabolismo , Hidrocortisona/orina , Factor I del Crecimiento Similar a la Insulina/metabolismo , Administración por Inhalación , Adolescente , Antropometría/métodos , Niño , Colágeno/análisis , Colágeno/efectos de los fármacos , Método Doble Ciego , Femenino , Fluticasona , Crecimiento/efectos de los fármacos , Humanos , Factor I del Crecimiento Similar a la Insulina/efectos de los fármacos , Masculino , Osteocalcina/sangre
18.
Ugeskr Laeger ; 157(43): 5979-82, 1995 Oct 23.
Artículo en Danés | MEDLINE | ID: mdl-7483076

RESUMEN

The aim of this study was to analyse the frequency of permanent and transient complications following thyroid gland surgery. During a period of four years, from 1991 to 1995, 129 patients were treated operatively for thyroid disease. Sixteen patients were operated for thyrotoxicosis and 113 for nontoxic goitre. Nine patients underwent reoperation for recurrent goitre. Thyroid malignancy was found in two patients. The frequency of permanent complications was 0.7%. Transient unilateral pareses developed postoperatively in two patients. There were no permanent vocal cord paralyses. One patient developed permanent hypoparathyroidism. Five patients had transient postoperative hypocalcaemia requiring calcium supplements. Other complications were haemorrhage (3.8%), wound infection (0.7%) and other postoperative complications (1.5%). It is shown that uncomplicated thyroid surgery may be performed at a district hospital that has a special interest in patient evaluation, indications for surgery and up to date surgical technique.


Asunto(s)
Bocio/cirugía , Complicaciones Posoperatorias/diagnóstico , Tiroidectomía/efectos adversos , Adolescente , Adulto , Anciano , Dinamarca , Femenino , Humanos , Hipoparatiroidismo/diagnóstico , Hipoparatiroidismo/etiología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Servicio de Cirugía en Hospital/normas , Tiroidectomía/normas , Parálisis de los Pliegues Vocales/diagnóstico , Parálisis de los Pliegues Vocales/etiología
19.
Scand J Prim Health Care ; 13(1): 52-8, 1995 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-7777736

RESUMEN

OBJECTIVE: To analyse physical examinations and laboratory tests reported in antenatal care visits in relation to official guidelines and reviews of appropriateness. DESIGN: A nationwide cross sectional study based on questionnaires completed by general practitioners (GPs), midwives, and hospital doctors. Physical examinations and laboratory tests in connection with one specific visit were reported. SUBJECTS: The questionnaires were completed by 722 GPs (61% of eligible from a random sample), 584 midwives (86% of eligible), 250 hospital doctors who made health examinations in pregnancy, week 16-18 (63% of eligible), and 181 hospital doctors who saw women with at-risk pregnancies (55% of eligible). RESULTS: General practice: weight, blood pressure (BP) measurement, and test for proteinuria were reported in more than 90% of visits. Urine culture was reported in 46%, and cervical smear in 41% of first visits. Rubella antibody test at the first visit was only reported in 23% of nulliparae. Vaginal examination was reported in 95% of first visits. Fewer were reported in second (27%) and third (48%) routine visits during pregnancy. Midwives: checks of BP, oedema, and proteinuria were reported in more than 95% of visits irrespective of week of gestation. Vaginal examination was reported in about a third of checkups. Hospitals: vaginal examination was reported in 66% of checkups in at-risk pregnancies. CONCLUSIONS: A surplus of resources were spent on (repeat) examinations and tests with little or no documented benefit. Cervical cytology was grossly overused. Urine culture and rubella serology were not sufficiently applied.


Asunto(s)
Técnicas de Laboratorio Clínico , Examen Físico , Atención Prenatal , Estudios Transversales , Dinamarca , Medicina Familiar y Comunitaria , Femenino , Mal Uso de los Servicios de Salud , Investigación sobre Servicios de Salud , Humanos , Cuerpo Médico de Hospitales , Partería , Embarazo , Embarazo de Alto Riesgo
20.
Int J Hyperthermia ; 10(2): 165-73, 1994.
Artículo en Inglés | MEDLINE | ID: mdl-8064178

RESUMEN

The present work was designed to examine the effect of in vivo hyperthermia on the cell number and functions of polymorphonuclear leucocytes (PMN) and monocytes in human beings. Eight healthy volunteers were immersed into a waterbath (WI) (water temperature 39.5 degrees C) for 2 h, whereby their rectal temperature rose to 39.5 degrees C. On a later day they served as their own controls, being immersed into thermoneutral water (34.5 degrees C) for 2 h. Blood samples were collected before immersion, at body temperatures of 38, 39 and 39.5 degrees C as well as 2 h after water immersion. The neutrophil count was significantly increased at 39.5 degrees C, as well as 2 h after hot WI, compared with control. The monocyte count was significantly augmented at 38 and 39 degrees C and 2 h after hyperthermic load. The FMLP-induced chemiluminescence response, for a given number of PMN, was significantly reduced 2 h after hot WI. The total amount (per litre of blood) of superoxide production by PMN stimulated with opsonized zymosan (OZ) was significantly augmented at 39 and 39.5 degrees C and 2 h after WI. In vivo hyperthermia did not affect the function of monocytes, but when correlated to the changes in the concentrations of monocytes (response per litre blood) a significant increase in the phorbol myristate acetate (PMA)- and OZ-enhanced superoxide production occurred at 38 and 39 degrees C, as well as 2 h after termination of hot WI. Furthermore the OZ-enhanced monocyte chemiluminescence response per litre of blood was significantly enhanced 2 h after hot WI.(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Hipertermia Inducida , Monocitos/fisiología , Neutrófilos/fisiología , Adulto , Humanos , Recuento de Leucocitos , Mediciones Luminiscentes , Masculino , Monocitos/efectos de los fármacos , N-Formilmetionina Leucil-Fenilalanina/farmacología , Neutrófilos/efectos de los fármacos , Superóxidos/metabolismo , Acetato de Tetradecanoilforbol/farmacología , Zimosan/farmacología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA