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1.
J Insect Sci ; 20(4)2020 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-32706872

RESUMO

Hylobius warreni Wood (Coleoptera: Curculionidae) is a pest of conifers, especially lodgepole pine (Pinus contorta var. latifolia Douglas ex Loudon) (Pinales: Pinaceae) in the Interior of British Columbia. The larvae feed on the roots and root collars and cause girdling damage, resulting in mortality or growth reductions. Previous research has suggested the adult weevils locate potential host trees by using random movements and vision, but likely not chemosensory cues. The purpose of this study is to determine if adult H. warreni respond to particular tree characteristics versus encounter potential hosts at random. Study A was a capture-mark-recapture experiment where weevils were captured on mature pine trees, while Study B was a tracking experiment within a young pine plantation. Weevils showed a preference for larger trees, and for trees that were closer to the weevil's last known location. In Study A, weevils also avoided climbing trees in poor health, while in Study B, the weevils' preference for taller trees increased as their distance from the weevil increased, as well as when taller trees were closer to other trees. Movement rates were similar to those observed in previous studies, were positively correlated with the average spacing of trees, and declined with time after release. This confirms previous findings that H. warreni may locate host trees by both vision and random movements, and that their movements are determined primarily by the size and distribution of potential host trees within their habitat.


Assuntos
Movimento , Árvores , Gorgulhos/fisiologia , Distribuição Animal , Animais , Colúmbia Britânica , Feminino , Masculino , Pinus
2.
PLoS One ; 13(5): e0196063, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29758027

RESUMO

The recent mountain pine beetle outbreak in western Canada provides an opportunity to study the selection and heritability of tree defenses. We examined terpenoid-based defenses of seedling lodgepole pines which were offspring of mature trees subjected to high levels of mountain pine beetle selective pressure. Seedlings were grown from one of three types of cones: old cones on live trees; young cones on live trees; and cones on trees killed by beetles. Offspring thus represented crosses of non-surviving (NS) x surviving (S), S x S, and NS x NS parents, respectively. Methyl jasmonate was used to induce a defensive reaction in the seedlings. Seed source had a significant effect on levels of ten different terpenes, but not on total terpene concentrations. When the seedlings were grouped by location and treatment type, the seedlings of different cone types could be almost entirely distinguished by terpene profiles.


Assuntos
Acetatos/farmacologia , Besouros/fisiologia , Ciclopentanos/farmacologia , Oxilipinas/farmacologia , Pinus/efeitos dos fármacos , Doenças das Plantas/prevenção & controle , Plântula/efeitos dos fármacos , Árvores/efeitos dos fármacos , Animais , Pinus/parasitologia , Doenças das Plantas/parasitologia , Plântula/parasitologia , Árvores/parasitologia
3.
J Pediatr Urol ; 13(2): 223-224, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28262537

RESUMO

BACKGROUND: Robot-assisted retroperitoneal lymph node dissection (RA-RPLND) has built on success and techniques of laparoscopic RPLND, with the added benefits of robotic technology. This paper demonstrates use of the da Vinci Xi® system for RA-RPLND in two adolescent patients. METHODS: Case #1: A 17-year-old male presented with a left testicular mass and elevated alpha-fetoprotein (AFP) and human chorionic gonadotropin (HCG). Pathology revealed a mixed non-seminomatous germ cell tumor (60% embryonal, 35% yolk sac, 5% choriocarcinoma, + lymphovascular invasion). Tumor marker normalized post-orchiectomy, and staging imaging was without evidence of metastatic disease. After discussion of options he opted to undergo RA-RPLND. Case #2: A 15-year-old male presented with a right para-testicular mass and negative tumor markers. He underwent inguinal exploration and excision of the paratesticular mass. Final pathology revealed an ectomesenchymoma with a spindle cell rhabdomyosarcoma component. Staging imaging was negative, and after discussion of options he underwent completion orchiectomy and RA-RPLND. RESULTS: The patient in Case #1 underwent a left modified-template nerve-sparing RA-RPLND. Sixteen lymph nodes were negative for tumor. The patient in Case #2 underwent complete bilateral nerve-sparing RA-RPLND. Forty-two lymph nodes were negative for tumor. Estimated blood loss was <50 cc for both cases, and console time averaged 262 min. CONCLUSION: This was a report of two cases of RA-RPLND in the adolescent population. RA-RPLND is technically feasible in this population, and further study of RA-RPLND is needed to determine long-term outcomes, as this technique is becoming more widely adopted.


Assuntos
Excisão de Linfonodo/métodos , Neoplasias Embrionárias de Células Germinativas/cirurgia , Orquiectomia/métodos , Rabdomiossarcoma/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Neoplasias Testiculares/cirurgia , Adolescente , Humanos , Linfonodos/patologia , Linfonodos/cirurgia , Masculino , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Invasividade Neoplásica/patologia , Estadiamento de Neoplasias , Neoplasias Embrionárias de Células Germinativas/patologia , Prognóstico , Espaço Retroperitoneal/patologia , Espaço Retroperitoneal/cirurgia , Rabdomiossarcoma/patologia , Estudos de Amostragem , Neoplasias Testiculares/patologia , Resultado do Tratamento , Estados Unidos
4.
J Pediatr Urol ; 12(4): 202.e1-5, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27321557

RESUMO

INTRODUCTION: Recent studies have suggested that a smaller glans penis size may be associated with a higher likelihood of complications after hypospadias repair. Accurate identification of risk factors other than the well-understood variable of meatal location would allow development of better prognostic models and individualized risk stratification. OBJECTIVE: To test the hypothesis that a smaller width of the glans penis predicts adverse outcomes after hypospadias surgery. METHODS: Prospectively recorded clinical data were reviewed from a single-institution registry of primary hypospadias repairs performed between 2011 and 2014. Follow-up records were examined for occurrence of complications. Urethroplasty complications were defined to include meatal stenosis, dehiscence, urethrocutaneous fistula, urethral stricture, and/or urethral diverticulum. The subset of meatal stenosis and dehiscence were regarded as glanular complications. Regression analyses were performed to determine association between glans width and occurrence of complications. Because pre-operative androgen stimulation is known to increase glans penis size, separate subgroup analyses were included of patients with and without pre-operative use of testosterone cream. RESULTS: A total of 159 patients met criteria for inclusion in the study cohort: 140 patients underwent a single-stage repair, while 19 patients had a two-stage repair. The median glans penis width was 15 mm (range 10-22). Eighty-four patients (53%) received testosterone cream pre-operatively and had a significantly wider glans penis than the 75 patients who did not (median 15.5 vs 14 mm; P < 0.001). Median clinical follow-up was 7 months (IQR 1-12), with a minimum time elapsed since surgery of 10 months at the time of chart review. Twenty-four patients (15%) had one or more urethroplasty complications, including 11 (7%) with glanular complications. Overall, there was no statistically significant association between glans width and urethroplasty complications (P = 0.26) or glanular complications (P = 0.90) (Summary Table). Subgroup analyses of patients with and without pre-operative testosterone also revealed no significant associations between glans width and complications. CONCLUSIONS: Glans penis width was not a risk factor for complications after hypospadias repair. This finding differs from the results of other recent studies and encourages further research into the value of measuring penile parameters in patients undergoing hypospadias repair.


Assuntos
Hipospadia/cirurgia , Pênis/anatomia & histologia , Complicações Pós-Operatórias/epidemiologia , Humanos , Lactente , Masculino , Tamanho do Órgão , Estudos Retrospectivos , Fatores de Risco
5.
J Pediatr Urol ; 11(3): 121.e1-7, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25921701

RESUMO

INTRODUCTION: Regional anesthesia is often used in combination with general anesthesia for pediatric surgery, however, it is unknown if adjunctive regional blocks are beneficial to children undergoing urologic laparoscopic or robot-assisted laparoscopic (RAL) procedures. OBJECTIVE: To compare perioperative outcomes in children with adjunctive caudal blocks, transversus abdominis plane (TAP) blocks, or no regional anesthesia for common RAL surgical procedures in pediatric urology. STUDY DESIGN: Inclusion in this retrospective study was limited to children who underwent RAL renal or ureteral/bladder procedures and received a standardized regimen of scheduled intravenous ketorolac and oral acetaminophen for acute postoperative pain control, with opioids as needed (PRN). Perioperative outcomes were compared between patients with an adjunctive caudal block (n = 25), bilateral TAP blocks (n = 44), or no regional anesthesia (n = 51). RESULTS: Children with a preoperative caudal block received less intraoperative opioids than children with TAP blocks or no regional anesthesia (p < 0.001). This difference was observed both for renal procedures (p < 0.01) and ureteral/bladder procedures (p = 0.01). Patients with caudal blocks were also the least likely to require postoperative antiemetics (p = 0.03). There were no significant differences between groups in postoperative opioid use, maximum pain scores within 6 and 24 hours postoperatively, or length of hospital stay (LOS). No complications attributable to regional blocks were identified by chart review. DISCUSSION: Use of adjunctive caudal blocks for pediatric RAL renal or ureteral/bladder surgical procedures may reduce need for alternate analgesic and/or anesthetic agents intraoperatively, as well as decrease postoperative nausea and vomiting. These findings may be related, since nausea and vomiting are common side effects of opioids and inhalational anesthetics. Consideration of the potential impact of caudal blocks on general anesthetic requirements is timely in light of concerns regarding the risk of anesthetic neurotoxicity in young patients. There was no evidence of improved postoperative pain control or shorter LOS for children who received regional anesthesia. It is unknown if regional blocks would have a greater impact in the absence of scheduled pain medications, which all patients in our study received. Limitations of this study include its retrospective nature and moderate sample size. Future randomized controlled trials are necessary to provide a more definitive understanding of regional anesthesia's role in minimizing pediatric surgical and anesthetic morbidity. CONCLUSION: Administration of caudal blocks should be considered for children of suitable age undergoing RAL surgery involving either the upper or lower urinary tract.


Assuntos
Anestésicos Locais/administração & dosagem , Laparoscopia , Bloqueio Nervoso , Dor Pós-Operatória/prevenção & controle , Procedimentos Cirúrgicos Robóticos , Procedimentos Cirúrgicos Urológicos , Adolescente , Analgésicos/uso terapêutico , Anestesia por Condução , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Estudos Retrospectivos , Resultado do Tratamento
6.
Prostate Cancer Prostatic Dis ; 18(3): 255-9, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25896264

RESUMO

BACKGROUND: Limited information is known about the clinical significance of cancers diagnosed upon repeat biopsy for the indication of atypical small acinar proliferation (ASAP). With increasing concern regarding overdiagnosis and overtreatment of prostate cancer, and the reported rise in infectious complications related to prostate biopsy, we examined the outcomes of patients rebiopsied for a diagnosis of ASAP. METHODS: Clinical, pathologic and outcomes data of patients diagnosed with ASAP on prostate biopsy at our institutions between 2000 and 2010 were abstracted through chart review. Statistical analyses included Fisher's exact and the two-sample Wilcoxon rank sum tests. Logistic regression evaluated risk factors for the probability of cancer following a diagnosis of ASAP. RESULTS: A total of 349 patients met the inclusion criteria with median follow-up of 4.4 years. Median age was 65.3 years with a median PSA of 5.3 ng ml(-1). Of men diagnosed with ASAP, 250/349 (71.6%) had a repeat biopsy within 1 year with 94/246 (38.2%) demonstrating prostate cancer; only 26/245 (10.6%) had ⩾Gleason 7 disease. Of men diagnosed with ASAP, 284/349 (81.4%) underwent biopsy at some time during follow-up. Prostate cancer was diagnosed in 132/279 (47.3%) of these men, 48/278 (17.3%) with ⩾Gleason 7 disease. Multivariate analyses suggested that older age, no previous biopsy and PSA density were predictive of cancer on repeat biopsy within 1 year from ASAP. Univariate analysis revealed PSA density was associated with the presence of ⩾Gleason 7 disease at 1 year and any time after a diagnosis of ASAP. CONCLUSIONS: The overall rate of intermediate- and high-grade prostate cancer found on repeat biopsy for ASAP is low. Further investigation into ways to further risk stratify these men may be warranted. However, until such tests become available, repeat biopsy of men diagnosed with ASAP remains prudent.


Assuntos
Próstata/patologia , Neoplasias da Próstata/patologia , Idoso , Idoso de 80 Anos ou mais , Biópsia , Humanos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Prognóstico , Neoplasias da Próstata/diagnóstico , Fatores de Risco
7.
J Psychiatr Ment Health Nurs ; 22(6): 371-8, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25655648

RESUMO

ACCESSIBLE SUMMARY: This paper adds a phenomenological hermeneutic perspective on meanings of caring for adult people who self-harm as disclosed in narratives of dialectical behaviour therapy (DBT)-trained professionals. This paper shows that providing DBT care for people who self-harm means embarking an unpredictable journey, sometimes lonely, but also often together with the person who self-harm and with the DBT team. This paper emphasizes professionals' benefits of the tools and structure offered by DBT; however, the text points to the importance of the genuine meeting, including confirmation, as a prerequisite to recovery. This paper suggests that further research might focus on the meanings of genuine meetings and their organizational prerequisites. ABSTRACT: In this paper, we aim to explore meanings of caring for adult people who self-harm as described in the narratives of professionals trained in dialectical behaviour therapy (DBT). We conducted narrative interviews with nine professionals working in a DBT team and used a phenomenological hermeneutical method to analyse their narratives. Our comprehensive understanding cast the caring relationship as an unpredictable journey, in which the professionals were guides or companions who aimed to walk side-by-side with the person who self-harms, prove to be trustworthy, and keep on track. They sometimes saw the journey as lonely and sometimes as a joint endeavour. Our analysis was informed by Martin Buber's writings on the 'genuine meeting' and confirmation. The professionals emphasized the importance of the tools and structure offered by DBT; however, the text points to the importance of the genuine meeting, including confirmation, as a prerequisite to recovery. Mental health nurses need opportunities for continuous training and counselling.


Assuntos
Atitude do Pessoal de Saúde , Terapia Comportamental/métodos , Narrativas Pessoais como Assunto , Comportamento Autodestrutivo/terapia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
8.
J Pediatr Urol ; 10(6): 1283.e1-2, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25168317

RESUMO

OBJECTIVE: Demonstrate and report initial results using a carbon dioxide (CO2) laser for detrusor tunnel creation in robot-assisted laparoscopic extravesical ureteral reimplant (RALUR). METHODS: Retrospective chart review was performed for cases of RALUR from 2011 to 2014. Patients undergoing complex reconstruction (ureteral tailoring, dismembered reimplant, concomitant ureteroureterostomy), and those who had incomplete follow-up were excluded. Variables, including use of the CO2 laser, were collected and correlated with outcomes. RESULTS: 23 patients representing 40 ureteral units were included for analysis. A CO2 laser was used in 9/23 (39%) patients and 16/40 (40%) ureteral units. Intraoperative mucosotomy was reported in 3/14 (21%) patients for the electrocautery group and 1/9 (11%) patients for the CO2 laser group. Resolution of VUR was observed in 11/14 (79%), and 9/9 (100%) of patients for the electrocautery group and the CO2 laser group, respectively. Two complications were identified in the electrocautery group of patients: ileus (Clavien 2), and transient bilateral ureteral obstruction requiring placement of ureteral stents (Clavien 3B). There were no complications in the CO2 laser group. CONCLUSIONS: Creation of the detrusor tunnel with a CO2 laser is safe and effective, and is associated with a lower rate of failure and complication in this cohort.


Assuntos
Laparoscopia/métodos , Lasers de Gás , Procedimentos de Cirurgia Plástica/métodos , Reimplante/métodos , Robótica , Ureter/cirurgia , Procedimentos Cirúrgicos Urológicos/métodos , Refluxo Vesicoureteral/cirurgia , Criança , Humanos , Estudos Retrospectivos
9.
PeerJ ; 2: e240, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24688833

RESUMO

The mountain pine beetle, Dendroctonus ponderosae, is a significant pest of lodgepole pine in British Columbia (BC), where it has recently reached an unprecedented outbreak level. Although it is native to western North America, the beetle can now be viewed as a native invasive because for the first time in recorded history it has begun to reproduce in native jack pine stands within the North American boreal forest. The ability of jack pine trees to defend themselves against mass attack and their suitability for brood success will play a major role in the success of this insect in a putatively new geographic range and host. Lodgepole and jack pine were sampled along a transect extending from the beetle's historic range (central BC) to the newly invaded area east of the Rocky Mountains in north-central Alberta (AB) in Canada for constitutive phloem resin terpene levels. In addition, two populations of lodgepole pine (BC) and one population of jack pine (AB) were sampled for levels of induced phloem terpenes. Phloem resin terpenes were identified and quantified using gas chromatography. Significant differences were found in constitutive levels of terpenes between the two species of pine. Constitutive α-pinene levels - a precursor in the biosynthesis of components of the aggregation and antiaggregation pheromones of mountain pine beetle - were significantly higher in jack pine. However, lower constitutive levels of compounds known to be toxic to bark beetles, e.g., 3-carene, in jack pine suggests that this species could be poorly defended. Differences in wounding-induced responses for phloem accumulation of five major terpenes were found between the two populations of lodgepole pine and between lodgepole and jack pine. The mountain pine beetle will face a different constitutive and induced phloem resin terpene environment when locating and colonizing jack pine in its new geographic range, and this may play a significant role in the ability of the insect to persist in this new host.

10.
J Psychiatr Ment Health Nurs ; 21(2): 114-20, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23530616

RESUMO

Mental ill-health is reported to be of major concern in public health. Persons suffering from mental ill-health are a vulnerable group, and loneliness influences the perception of physical, social, and emotional well-being. However, there are few studies exploring lived experiences of loneliness among people with mental ill-health. This qualitative study aimed to illuminate experiences of loneliness among people with mental ill-health. Five individual, informal conversational interviews were performed and subjected to qualitative content analysis. The main findings showed that experiences of loneliness could be metaphorically described as looking at the world through a frosted window. The experiences of loneliness were multifaceted and altering as well as emotionally and socially excluding. The findings are discussed in relation to Tillich dimensions of loneliness: loneliness as a painful dimension of being alone, and solitude as the enriching dimension of being alone. People suffering from mental ill-health carry a twofolded stigma. They feel socially undesirable because of their mental ill-health, and the social perceptions of lonely people are generally unfavourable. We believe that mental health nurses can support the developing and creative dimension of loneliness through a confirming approach, where people with mental ill-health feel seen, heard, and respected as human beings.


Assuntos
Solidão/psicologia , Pessoas Mentalmente Doentes/psicologia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
11.
Environ Entomol ; 41(3): 578-86, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22732616

RESUMO

Warren root collar weevil, Hylobius warreni Wood, is a native, flightless insect distributed throughout the boreal forest of North America. It is an emerging problem in young plantings of lodgepole pine, Pinus contorta variety latifolia, in western Canada, where larval feeding can kill young trees by girdling the root collar. Susceptible plantings are becoming more abundant following salvage harvesting and replanting activities in the wake of an ongoing epidemic of mountain pine beetle, Dendroctonus ponderosae (Hopkins). Previous studies using mark-trap-recapture methods found that movement rates of adult H. warreni were elevated in areas with high numbers of dead trees, consistent with a hypothesis that the insects immigrate from stands with high mountain pine beetle-caused tree mortality to young plantings in search of live hosts. Sampling methods were necessarily biased to insects captured in traps; however, potentially missing individuals that had died, left the study area, or simply remained stationary. Here, we used harmonic radar to examine weevil movement in three different habitats: open field, forest edge, and within a forest. We were able to reliably monitor all but two of 36 insects initially released, over 96 h (4 d). Weevils released in the open field had the highest rates of movement, followed by weevils released at the forest edge, then weevils released within the forest. Movement declined with decreasing ambient air temperature. Our results suggest that weevils tend to be relatively stationary in areas of live hosts, and hence may concentrate in a suitable area once such habitat is found.


Assuntos
Migração Animal , Ecossistema , Gorgulhos/fisiologia , Animais , Colúmbia Britânica , Feminino , Masculino , Pinus , Radar , Árvores
12.
Mol Ecol ; 21(12): 2931-48, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22554298

RESUMO

Environmental change has a wide range of ecological consequences, including species extinction and range expansion. Many studies have shown that insect species respond rapidly to climatic change. A mountain pine beetle epidemic of record size in North America has led to unprecedented mortality of lodgepole pine, and a significant range expansion to the northeast of its historic range. Our goal was to determine the spatial genetic variation found among outbreak population from which genetic structure, and dispersal patterns may be inferred. Beetles from 49 sampling locations throughout the outbreak area in western Canada were analysed at 13 microsatellite loci. We found significant north-south population structure as evidenced by: (i) Bayesian-based analyses, (ii) north-south genetic relationships and diversity gradients; and (iii) a lack of isolation-by-distance in the northernmost cluster. The north-south structure is proposed to have arisen from the processes of postglacial colonization as well as recent climate-driven changes in population dynamics. Our data support the hypothesis of multiple sources of origin for the outbreak and point to the need for population specific information to improve our understanding and management of outbreaks. The recent range expansion across the Rocky Mountains into the jack/lodgepole hybrid and pure jack pine zones of northern Alberta is consistent with a northern British Columbia origin. We detected no loss of genetic variability in these populations, indicating that the evolutionary potential of mountain pine beetle to adapt has not been reduced by founder events. This study illustrates a rapid range-wide response to the removal of climatic constraints, and the potential for range expansion of a regional population.


Assuntos
Besouros/genética , Variação Genética , Pinus , Alberta , Animais , Colúmbia Britânica , Mudança Climática , Repetições de Microssatélites , Dinâmica Populacional
13.
Leukemia ; 24(8): 1470-5, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20574454

RESUMO

Graft-versus-host disease (GVHD) is a frequent complication after hematopoietic cell transplant (HCT). Tissue damage as a result of chemoradiation injury is the initiating event in the pathogenesis of acute GVHD. Variations in DNA repair can influence the amount of tissue damage in response to alkylating agents and ionizing radiation used as conditioning during HCT. As DNA damage caused by these agents is repaired by the base excision repair (BER) pathway, we hypothesized that single-nucleotide polymorphisms (SNPs) in BER pathway will be associated with GVHD after HCT. Hence, we analyzed 179 SNPs in BER pathway in 470 recipients of allogeneic HCT for association with acute and chronic GVHD. In multivariate analysis, one SNP (rs6844176) in RFC1 (replication factor C (activator 1)) gene was independently associated with a higher risk of grade II-IV acute GVHD (relative risk (RR): 1.39, 95% confidence interval (CI): 1.14-1.70, P=0.001), and showed a trend toward higher risk of grade III-IV acute GVHD (RR: 1.33, 95% CI: 0.95-1.85, P=0.09). One SNP in PARP1 gene (rs1805410) was associated with a higher risk of chronic GVHD (RR: 1.81, 95% CI: 1.29-2.54, P=0.001). These results show that SNPs in the BER pathway can be used as genetic biomarkers to predict those at high risk for GVHD toward whom novel prophylactic strategies could be targeted.


Assuntos
Reparo do DNA/genética , Doença Enxerto-Hospedeiro/genética , Polimorfismo de Nucleotídeo Único , Adulto , Antineoplásicos Alquilantes/uso terapêutico , Transplante de Células-Tronco Hematopoéticas , Humanos
14.
Environ Entomol ; 39(2): 476-83, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20388277

RESUMO

Surveys were conducted on regenerating stands of lodgepole pine to determine the relationship between root deformation and susceptibility to attack by the Warren root collar weevil, Hylobius warreni Wood. The total number of trees attacked by H. warreni did not differ between planted and natural trees. A matched case-control logistic regression suggested that root cross-sectional area was more important in predicting weevil attack for naturally regenerated trees than for planted trees, but weevils were associated with a larger reduction in height-to-diameter ratios for trees with planted root characteristics than for trees with natural root form. Neither the stability of attacked versus unattacked trees differed significantly and there was no significant interaction of weevil attack and tree type, but weevil-killed trees had different root characteristics than alive, attacked trees. Lateral distribution and root cross-sectional area were significant predictors of alive attacked trees versus weevil-killed trees, suggesting that trees with poor lateral spread or poor root cross-sectional area are more likely to die from weevil attack. We conclude that root deformation does not necessarily increase susceptibility to attack but may increase the likelihood of mortality. Thus, measures to facilitate good root form are needed when planting pine in areas with high risk of Warren root collar weevil attack.


Assuntos
Agricultura Florestal , Pinus/crescimento & desenvolvimento , Raízes de Plantas/crescimento & desenvolvimento , Gorgulhos/fisiologia , Animais , Modelos Logísticos
15.
Diabet Med ; 26(9): 928-34, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19719715

RESUMO

AIM: The aim of this study was to estimate healthcare cost and productivity losses as a result of diabetes and diabetes-related chronic complications in Sweden in 1987 and 2005. RESEARCH DESIGN AND METHODS: Published estimates on relative risks and Swedish age-specific diabetes-prevalence rates were used to calculate the proportions of diabetes-related chronic complications that are attributable to diabetes. These attributable risks were applied to cost estimates for diabetes-related chronic complications based on data from Swedish population registers. RESULTS: The estimated total costs for Sweden in 1987 and 2005 were EUR439m and EUR920m, respectively. The increase of 110% was as a result of a 69% increase in the estimated prevalence from 150 000 (1.8% of the population) to 254 000 (2.8%) and of an increase in the estimated annual cost per person diagnosed with diabetes by 24%. Healthcare accounted for 45% of the estimated cost in 1987 and for 37% in 2005. The estimated diabetes-related healthcare cost accounted for approximately 1.0% of total healthcare cost in Sweden in 1987 and for 1.4% in 2005. Diabetes per se accounted for 57% of the healthcare cost in 1987 and for 50% in 2005. The most important chronic complication was cardiovascular disease. CONCLUSIONS: The cost of diabetes is substantial and increasing even in a fairly low-prevalence country such as Sweden. Measures to curb the increase in prevalence and to improve individual control of his or her diabetes seem to be the most important challenges.


Assuntos
Complicações do Diabetes/economia , Diabetes Mellitus Tipo 1/economia , Diabetes Mellitus Tipo 2/economia , Licença Médica/economia , Efeitos Psicossociais da Doença , Complicações do Diabetes/epidemiologia , Diabetes Mellitus Tipo 1/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia , Feminino , Custos de Cuidados de Saúde/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Sistema de Registros/estatística & dados numéricos , Fatores de Risco , Licença Médica/estatística & dados numéricos , Suécia/epidemiologia
16.
Environ Entomol ; 38(4): 1189-96, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19689899

RESUMO

The spatial influences of host and nonhost trees and shrubs on the colonization patterns of white pine weevil Pissodes strobi (Peck) were studied within a stand of planted interior hybrid spruce [Picea glauca (Moench) Voss x Picea engelmannii (Parry) ex Engelm.]. Planted spruce accounted for one third of all trees within the stand, whereas the remaining two thirds were comprised of early-successional nonhost vegetation, such as alder (Alnus spp.), paper birch (Betula papyrifera Marsh.), black cottonwood [Populus balsamifera ssp. trichocarpa (T. Ng.) Brayshaw], lodgepole pine [Pinus contorta (Dougl.) ex Loud.], trembling aspen (Populus tremuloides Michx), willow (Salix spp.), and Canadian buffaloberry [Shepherdia canadensis (L.) Nutt.]. Unlike the spruce trees, nonhost vegetation in the stand was not uniformly distributed. Spatial point process models showed that Canadian buffaloberry, paper birch, black cottonwoood, and trembling aspen had negative associations with damage caused by the weevil, even though the density of the insects' hosts in these areas did not change. Moreover, knowing the locations of these nonhost trees provided as much, or more, inference about the locations of weevil-attacked trees as knowing the locations of suitable or preferred host trees (i.e., those larger in size). Nonhost volatiles, the alteration of soil composition, and overstory shade are discussed as potential explanatory factors for the patterns observed. New research avenues are suggested to determine whether nonhost vegetation in early successional stands might be an additional tool in the management of these insects in commercially important forests.


Assuntos
Interações Hospedeiro-Parasita , Picea/parasitologia , Árvores/parasitologia , Gorgulhos/fisiologia , Animais , Colúmbia Britânica , Ecossistema , Dinâmica Populacional
17.
Acta Oncol ; 47(2): 199-206, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18210296

RESUMO

The aim was to investigate whether there are any positive consequences of childhood cancer. Studies published 1990-2005 reporting survivors' descriptions of positive consequences of childhood cancer were identified through a search in the databases CINAHL, PsycINFO, and PubMed. According to a manifest content analysis, positive consequences were referred to three themes: life values, relations to others, and relation to self. A second search in the same databases was conducted to identify studies investigating whether survivors of childhood cancer differ from comparison groups with regard to variables assigned to these themes. In these studies, no conclusions about positive consequences with regard to the theme life values can be drawn, as only one study was identified. In addition, only a small minority of findings from comparative studies indicate that childhood cancer has any positive consequences with regard to relations to others and relation to self. A majority of the results indicate that survivors do not differ from comparison groups, whereas some findings highlight that friendship and marital status are areas of concern, and parenthood and sexuality are areas of potential concern. It is recommended that survivors of childhood cancer are followed up by a multi-professional team, focusing not only on the survivors' health status but also on relations to family, friends, and partners.


Assuntos
Amigos , Relações Interpessoais , Casamento , Neoplasias/psicologia , Sobreviventes/psicologia , Adaptação Psicológica , Adolescente , Adulto , Fatores Etários , Criança , Empatia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Fatores de Tempo
18.
J Health Econ ; 27(3): 718-38, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-18207265

RESUMO

An increasing demand for both formal and informal care is likely to result from the ongoing demographic transition at the same time as there is a further move away from the traditional domestic division of labour. Public policy-making that aims at increasing the supply of informal care necessitates knowledge about the relative importance of various incentives for individual care providers. This paper takes as a point of departure that the willingness to supply informal care is partly explained by the extent to which it adversely affects labour-market outcomes and analyses the effect on labour-market outcomes of providing informal care to one's elderly parent(s) among the 50+ of Europe. Data from SHARE (Survey of Health, Ageing, and Retirement in Europe) was used to examine the association between, on the one hand, hours of informal care provided and, on the other, (1) the probability of employment, (2) hours worked, and (3) wages, respectively. The results suggest that giving informal care to one's elderly parents is associated with significant costs in terms of foregone labour-market opportunities and that these adverse effects vary between countries.


Assuntos
Cuidadores/economia , Emprego/estatística & dados numéricos , Idoso , Estudos Transversais , Emprego/economia , Europa (Continente) , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos Econômicos , Dinâmica Populacional , Salários e Benefícios
19.
Health Econ ; 17(3): 393-409, 2008 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-17768700

RESUMO

The aims of this study were to analyse (1) whether informal care, provided by children or grandchildren to their elderly parents, and formal care are substitutes or complements, and (2) whether this relationship differs across Europe. The analyses were based on cross-sectional data from the newly developed SHARE (Survey of Health, Ageing, and Retirement in Europe) database. We found (1) that informal and formal home care are substitutes, while informal care is a complement to doctor and hospital visits, and (2) that these relationships in some cases differ according to a European north-south gradient. Instrumental variable methods were used and the results highlight the importance of accounting for the endogeneity of informal care.


Assuntos
Cuidadores , Serviços de Assistência Domiciliar/estatística & dados numéricos , Atividades Cotidianas , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Europa (Continente) , Inquéritos Epidemiológicos , Hospitalização/estatística & dados numéricos , Humanos , Pessoa de Meia-Idade
20.
Environ Entomol ; 36(4): 743-50, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17716465

RESUMO

The association between 11 species of bark beetles (Coleoptera: Scolytinae) and one weevil (Coleoptera: Entiminae) with the pitch canker fungus, Fusarium circinatum Nirenberg and O'Donnell, was determined by crushing beetles on selective medium and histone H3 gene sequencing. Pityophthorus pubescens (Marsham) (25.00%), Hylurgops palliatus (Gyllenhal) (11.96%), Ips sexdentatus (Börner) (8.57%), Hypothenemus eruditus Westwood (7.89%), Hylastes attenuatus Erichson (7.40%), and Orthotomicus erosus (Wollaston) (2.73%) were found to carry the inoculum. In addition, the root weevil Brachyderes incanus L. (14.28%) had the second highest frequency of occurrence of the fungus. The responses of the insects to a range of verbenone doses were tested in field bioassays using funnel traps. Catches of P. pubescens, a species colonizing branch tips of live trees, were significantly reduced in a log-linear dose-dependent relationship. Catches of I. sexdentatus, an opportunistic species normally attacking fresh dead host material, were also gradually reduced with increasing verbenone dose. Catches of Tomicus piniperda L., O. erosus, Dryocoetes autographus (Ratzeburg), H. eruditus, Xyleborus dryographus (Ratzeburg), Hylastes ater (Paykull), Hylurgus ligniperda (F.), H. attenuatus, and B. incanus were not significantly affected by verbenone. The effects of verbenone were consistent with differences in host-age preference. Semiochemical disruption by verbenone in P. pubescens and I. sexdentatus could represent an integrated pest management strategy for the prevention of the spread of pitch canker disease between different stands. However, several species associated with F. circinatum were unaffected by verbenone, not supporting this compound for prevention of the establishment of potential vectors in Northern Spain.


Assuntos
Comunicação Animal , Besouros/efeitos dos fármacos , Besouros/microbiologia , Fungos/isolamento & purificação , Feromônios/metabolismo , Terpenos/farmacologia , Animais , Monoterpenos Bicíclicos , Besouros/metabolismo , Relação Dose-Resposta a Droga , Pinus , Espanha , Árvores
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