RESUMO
In France, about 2000 new cases of anal cancer are diagnosed annually. Squamous cell carcinoma is the most common histological type, mostly occurring secondary to persistent HPV16 infection. Invasive cancer is preceded by precancerous lesions. In addition to patients with a personal history of precancerous lesions and anal cancer, three groups are at very high risk of anal cancer: (i) men who have sex with men and are living with HIV, (ii) women with a history of high-grade squamous intraepithelial lesions (HSILs) or vulvar HPV cancer, and (iii) women who received a solid organ transplant more than 10 years ago. The purpose of screening is to detect HSILs so that they can be treated, thereby reducing the risk of progression to cancer. All patients with symptoms should undergo a proctological examination including standard anoscopy. For asymptomatic patients at risk, an initial HPV16 test makes it possible to target patients at risk of HSILs likely to progress to cancer. Anal cytology is a sensitive test for HSIL detection. Its sensitivity is greater than 80% and exceeds that of proctological examination with standard anoscopy. It is indicated in the event of a positive HPV16 test. In the presence of cytological abnormalities and/or lesions and a suspicion of dysplasia on clinical examination, high-resolution anoscopy is indicated. Performance is superior to that of proctological examination with standard anoscopy. However, this technique is not widely available, which limits its use. If high-resolution anoscopy is not possible, screening by a standard proctological examination is an alternative. There is a need to develop high-resolution anoscopy and triage tests and to evaluate screening strategies.
Assuntos
Neoplasias do Ânus , Lesões Pré-Cancerosas , Minorias Sexuais e de Gênero , Masculino , Humanos , Feminino , Papillomavirus Humano , Homossexualidade Masculina , Lesões Pré-Cancerosas/diagnóstico , Neoplasias do Ânus/diagnósticoRESUMO
AIM: To follow up on the experiences of Registered Nurses (RNs) working after 1 year of the COVID-19 pandemic in Canadian and American hospitals. DESIGN: Semi-structured interviews were conducted, and transcripts were analysed through a reflexive thematic analysis (RTA). METHODS: RNs (n = 19) first interviewed in the spring of 2020 were re-interviewed 1 year after their original interviews (May 25, 2021-June 25, 2021). Participants consisted of nurses residing in Canada and working in Ontario (n = 12) or American hospitals (n = 7), i.e., both local and cross-border nurses. RESULTS: Five themes were identified: (1) "You call us heroes, but you forgot us": Nurses described experiences of disrespect and stigma from their communities, their government, and their workplaces. (2) "A whole new level of busy": Nurses reported stressors both at home and at work that had increased exponentially throughout the pandemic. (3) "Running on empty": Nurses described burnout and mental health struggles including depression, irritation, and suicidal ideation; they coped using both adaptive and maladaptive strategies. (4) "The job of nursing is painful": Ongoing pandemic issues led nurses to re-evaluate their commitments to their units, their hospitals and the profession itself. (5) "Surviving an un-survivable day": Nurses shared positive moments at work and home that helped give them the strength to carry on. CONCLUSION: Significant investments will be required from hospital organizations and governments to ensure that healthcare systems continue to function safely for patients, their families and nurses. IMPACT: The purpose of this study was to understand and describe nurses' experiences after 1 year of working during the COVID-19 pandemic. Nurses reported feeling disrespected, overwhelmed, and burned out; many were looking to leave the profession. These findings will be of interest to nurses working on the frontline of the pandemic as well as hospital managers and policy makers. NO PATIENT OR PUBLIC CONTRIBUTION: In this investigation, nurses were the participants.
Assuntos
COVID-19 , Enfermeiras e Enfermeiros , Humanos , COVID-19/epidemiologia , Pandemias , Seguimentos , Hospitais , Ontário/epidemiologia , Pesquisa QualitativaRESUMO
This manuscript provides an introduction to the special issue: Where are we now? A consolidation of the research on long-term impact of child sexual abuse. Over the past thirty years, there has been an explosion of research about the long-term impacts of childhood sexual abuse (CSA) on adult functioning and wellbeing. However, the consolidation of this vast literature has not kept up with the creation of new research despite the complexity and sophistication of these newer investigations. We have compiled a special issue of the Journal of Child Sexual Abuse to summarize and analyze this vast literature into a cohesive, consolidated whole. The goal of this issue was to consolidate recent research about the effects of CSA on alcohol and substance use in survivors, revictimization, sexual risk and sexual well-being and couple and parenting functioning.
Assuntos
Sobreviventes Adultos de Maus-Tratos Infantis , Abuso Sexual na Infância , Maus-Tratos Infantis , Adulto , Criança , Humanos , Poder Familiar , Comportamento Sexual , SobreviventesRESUMO
In this review, 55 unique empirical studies of the impacts of a history of CSA on couple and parenting functioning were identified and analyzed according to assumptions considered in an earlier review. Overall, this current systematic review supported earlier assumptions that CSA survivors would evidence insecure attachments in their adult couple relationships; that CSA survivors would be less likely to marry and more likely to divorce; and that partners would also experience difficulties in relation to their partnership with a CSA survivor. Assumptions about parenting functioning included: that CSA survivors would have different attitudes toward their children; that CSA survivors would function poorly as parents; and that children of CSA survivors would be at increased risk for sexual abuse. Evolutions in the literature since that first review included methodological improvements, as well as the inclusion of male survivors in some studies. More sophisticated statistical modeling allowed for a greater understanding of mediators and moderators in the relationship between CSA and later interpersonal functioning in couple relationships and in parenting. Recommendations for future research and clinical implications were proposed.
Assuntos
Abuso Sexual na Infância , Poder Familiar , Adulto , Atitude , Criança , Humanos , Masculino , Casamento , SobreviventesRESUMO
Child sexual abuse (CSA) is a widespread adverse experience that has multiple detrimental impacts in the long-term, affecting mental, sexual, and physical health of survivors. In addition, CSA may impede interpersonal functioning, and be associated with a heightened risk of revictimization. Recent review articles have summarized the possible risk factors associated with sexual revictimization, yet an increasing body of literature suggests that CSA may be a key risk factor for multiple forms (i.e., psychological, physical, sexual) of victimization occurring specifically in the context of intimate relationships, either in adolescence (dating violence) or adulthood (partner violence). Our understanding of the mechanisms linking CSA and dating violence or intimate partner violence is still limited. This systematic review of the literature is aimed at summarizing the identified mediators of the association between CSA and revictimization in romantic relationships in past empirical reports. A total of 18 studies meeting criteria were identified. Apart from PTSD, few potential mediators have been explored in more than one study. In addition, few studies have investigated protective factors that may reduce the risk of revictimization. Several limitations in the current literature were identified including issues related to definitions and measurement. Studies relying on longitudinal designs with representative samples are clearly needed to orient future prevention efforts and break the revictimization trajectory.
Assuntos
Abuso Sexual na Infância , Maus-Tratos Infantis , Vítimas de Crime , Violência por Parceiro Íntimo , Adolescente , Adulto , Criança , Humanos , Parceiros SexuaisRESUMO
BACKGROUND: Sexual desire or frequency problems are exceedingly common, but treatment of them has been less than effective. AIM: The goal of this study was to develop a cost-effective, accessible intervention to deal with sexual desire or frequency problems, including sexual desire discrepancy, by enhancing the quality of couples' erotic intimacy. METHODS: 45 couples (38 heterosexual and 7 same-sex couples) distressed by sexual desire or frequency problems were seen in a 16-hour, group couples therapy intervention. Participants completed the New Sexual Satisfaction Scale (NSSS) at pretest, posttest, and at 6-month follow-up. OUTCOMES: The NSSS plus 3 additional items at pretest, posttest, and at 6-month follow-up and patients' written feedback. RESULTS: Statistically significant differences were found between pre-tests and post-tests in satisfaction with intensity of sexual arousal; creativity; frequency; sexual functioning; partner's sexual availability; partner's initiation of sexual activity; emotional opening up during sex; positive sexual reactions to the partner; communication of sexual wishes, preferences and desires; and balance between giving and receiving during sex. The largest improvement and effect sizes were found in overall satisfaction with one's sex life from pre-test to post-test and 6-month follow-up. CLINICAL IMPLICATIONS: Low sexual desire or frequency problems can be treated effectively by enhancing the quality of the couple's erotic connection, thereby creating desirable sex. STRENGTHS & LIMITATIONS: The strengths include the combination of quantitative and qualitative data. Limitations included the small number of same-sex couples. CONCLUSION: Sexual enhancement group couples therapy provides an effective, accessible, and affordable approach to low desire or frequency complaints in distressed couples. Kleinplatz PJ, Charest M, Paradis N, et al. Treatment of Low Sexual Desire or Frequency Using a Sexual Enhancement Group Couples Therapy Approach. J Sex Med 2020;17:1288-1296.
Assuntos
Terapia de Casal , Libido , Humanos , Orgasmo , Comportamento Sexual , Parceiros SexuaisRESUMO
During the 2017 European hepatitis A (HA) outbreak we assessed HA incidence in our cohort of 2300 HIV-infected patients, implemented preventive measures and evaluated practices and knowledge on sexually transmitted diseases (STD). HA incidence was assessed between 1 January 2017 and 31 December 2017 and included all symptomatic patients with virologically confirmed HA. Preventive measures consisted in identifying at risk and not immunised patients to propose them a free HAV vaccination, and an anonymous survey related to transmission routes of STD and to sexual behaviours. Twenty HA were diagnosed. All were homosexual men recently diagnosed with HIV and another STD. None were vaccinated against hepatitis A virus (HAV). Hospitalisation was required for 52%. We identified 250 patients at risk to acquire HAV and invited them to a free immunisation program. A total of 110 (44%) were vaccinated, of whom 74 responded to our survey. A majority of them (84%) reported recent active anal and oral sexuality with multiple (52%) male partners (81%), and ChemSex consumption (14%). Internet was the meeting link for 58%. Another STD history was found in 69%. One third of these individuals had no idea about STD transmission modes. This HA outbreak pointed the insufficient vaccine coverage against HAV and knowledge on STD, which may be improved by Internet.
Assuntos
Coinfecção/epidemiologia , Surtos de Doenças , Infecções por HIV/complicações , Infecções por HIV/epidemiologia , Hepatite A/complicações , Hepatite A/epidemiologia , Adulto , Bissexualidade , França/epidemiologia , Homossexualidade Masculina , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
Beginning in 2005, our team conducted a series of studies on optimal sexual experiences. We have applied our findings to develop a group therapy intervention for couples presenting with low sexual desire/frequency and sexual desire discrepancy. The goal was to improve the quality of erotic intimacy by focusing on such elements as being fully embodied during sex, increasing authenticity, trustworthiness, and vulnerability. Twenty-eight heterosexual individuals (14 couples) were seen in 16 hours of couples group therapy. Each completed the New Sexual Satisfaction Scale in pretests, posttests and six-month follow-ups. Significant differences in satisfaction (p <.001) were found in overall sample means from pretests to posttests and follow-ups. Significant differences were also found in 10 of 20 items, plus in two of three added items, including satisfaction with intensity of sexual arousal, variety, frequency, partner's initiation, and emotional opening up. Although this is a small sample, the results indicate that this intervention is effective. We interpret these findings in terms of creating just enough safety to enable couples to take erotic risks and thereby create desirable sexual intimacy.
Assuntos
Orgasmo , Comportamento Sexual/psicologia , Disfunções Sexuais Psicogênicas/terapia , Parceiros Sexuais/psicologia , Adulto , Feminino , Heterossexualidade/psicologia , Humanos , Libido , Masculino , Pessoa de Meia-Idade , Disfunções Sexuais Psicogênicas/psicologiaRESUMO
BACKGROUND: The first wave of the COVID-19 pandemic had a significant impact on the personal and professional lives of frontline nurses. PURPOSE: The purpose of this descriptive phenomenological study was to explore the experiences of Canadian Registered Nurses (RNs) working in Ontario or United States hospitals during the first wave of the COVID-19 pandemic. METHODS: Semi-structured interviews were conducted with 36 RNs living in Ontario and employed either at an Ontario or United States hospital. Three main themes were identified across both healthcare contexts. RESULTS: 1) The Initial Response to the pandemic included a rapid onset of chaos and confusion, with significant changes in structure and patient care, often exacerbated by hospital management. Ethical concerns arose (e.g., redeployment, allocation of resources) and participants described negative emotional reactions. 2) Nurses described Managing the Pandemic by finding new ways to nurse and enhanced teamwork/camaraderie; they reported both struggle and resiliency while trying to maintain work and home life balance. Community responses were met with both appreciation and stigma. 3) Participants said they were Looking Forward to a "new normal", taking pride in patient improvements, accomplishments, and silver linings, with tempered optimism about the future. Many expressed a reaffirmation of their identities as nurses. Differences between participants working in the US and those working in Ontario were noted in several areas (e.g., initial levels of chaos, ethical concerns, community stigma). CONCLUSIONS: The COVID-19 pandemic has been very difficult for nursing as a profession. Close attention to post-pandemic issues is warranted.
Assuntos
COVID-19 , Enfermeiras e Enfermeiros , Humanos , COVID-19/epidemiologia , Pandemias , Hospitais Urbanos , Ontário , Estigma Social , Pesquisa QualitativaRESUMO
PURPOSE: Nurses working during the coronavirus disease 2019 (COVID-19) pandemic have reported elevated levels of anxiety, burnout and sleep disruption. Hospital administrators are in a unique position to mitigate or exacerbate stressful working conditions. The goal of this study was to capture the recommendations of nurses providing frontline care during the pandemic. DESIGN/METHODOLOGY/APPROACH: Semi-structured interviews were conducted during the first wave of the COVID-19 pandemic, with 36 nurses living in Canada and working in Canada or the United States. FINDINGS: The following recommendations were identified from reflexive thematic analysis of interview transcripts: (1) The nurses emphasized the need for a leadership style that embodied visibility, availability and careful planning. (2) Information overload contributed to stress, and participants appealed for clear, consistent and transparent communication. (3) A more resilient healthcare supply chain was required to safeguard the distribution of equipment, supplies and medications. (4) Clear communication of policies related to sick leave, pay equity and workload was necessary. (5) Equity should be considered, particularly with regard to redeployment. (6) Nurses wanted psychological support offered by trusted providers, managers and peers. PRACTICAL IMPLICATIONS: Over-reliance on employee assistance programmes and other individualized approaches to virtual care were not well-received. An integrative systems-based approach is needed to address the multifaceted mental health outcomes and reduce the deleterious impact of the COVID-19 pandemic on the nursing workforce. ORIGINALITY/VALUE: Results of this study capture the recommendations made by nurses during in-depth interviews conducted early in the COVID-19 pandemic.
Assuntos
Esgotamento Profissional/psicologia , COVID-19/enfermagem , Recursos Humanos de Enfermagem Hospitalar/psicologia , Serviços de Saúde do Trabalhador , Estresse Psicológico/psicologia , Adulto , Esgotamento Profissional/prevenção & controle , Canadá , Comunicação , Feminino , Humanos , Entrevistas como Assunto , Liderança , Masculino , Avaliação das Necessidades , Política Organizacional , Pandemias , Equipamento de Proteção Individual , SARS-CoV-2 , Licença Médica , Estresse Psicológico/prevenção & controle , Estados Unidos , Carga de TrabalhoRESUMO
BACKGROUND AND AIMS: Helicobacter pullorum is an enterohepatic Helicobacter species of avian origin detected in patients with acute diarrhoea and inflammatory bowel disease. The aim of the present study was to determine whether H pullorum exerts a direct effect on human intestinal epithelial cells in vitro and to characterise the bacterial mechanisms and the signalling pathways involved. MATERIALS AND METHODS: The proinflammatory properties of H pullorum from human and avian origins were measured on human gastric (AGS) and intestinal (CaCo-2 and HT-29) epithelial cell lines after co-culture with different H pullorum strains, and the extent of nuclear factor-kappaB (NF-kappaB) involvement was determined. RESULTS: All of the H pullorum strains tested stimulated interleukin 8 (IL8) secretion by the three cell lines. Similar results were obtained with heat-killed H pullorum. Incubation of cells with filtered H pullorum culture supernatants did not stimulate IL8 secretion. The same observation was made when bacterial adherence was inhibited by Transwell inserts. H pullorum induced NF-kappaB activation and rapid nuclear translocation as demonstrated by immunofluorescent staining and cellular fractionation. NF-kappaB involvement was confirmed by using the specific inhibitor SN50 and small interfering RNA (siRNA) which abolished H pullorum-induced IL8 production. CONCLUSIONS: H pullorum strains stimulate IL8 secretion by human gastric and intestinal epithelial cell lines. This effect requires bacterial adherence and probably lipopolysaccharides, and is mediated by NF-kappaB signalling. The present study strengthens the argument that H pullorum is a potent human pathogen and highlights its putative role in acute and chronic digestive diseases such as inflammatory bowel disease.
Assuntos
Células Epiteliais/microbiologia , Helicobacter/patogenicidade , Interleucina-8/metabolismo , NF-kappa B/metabolismo , Animais , Aderência Bacteriana/fisiologia , Western Blotting , Células CACO-2 , Núcleo Celular/metabolismo , Células Epiteliais/metabolismo , Células HT29 , Helicobacter pylori/patogenicidade , Humanos , Mucosa Intestinal/citologia , Mucosa Intestinal/metabolismo , Aves Domésticas/microbiologia , Transdução de SinaisRESUMO
Over the past ten years, there have been several high-profile accidents in academic laboratories around the world, resulting in significant injuries and fatalities. The aftermath of these incidents is often characterized by calls for reflection and re-examination of the academic discipline's approach to safety research and policy. However, the study of academic lab safety is still underdeveloped and necessary data about changes in safety attitudes and behaviours has not been gathered. This Review article critically examines the state of academic chemical safety research from a multifactorial stance, including research on the occurrence of lab accidents, contributors to lab accidents, the state of safety training research and the cultural barriers to conducting safety research and implementing safer lab practices. The Review concludes by delineating research questions that must be addressed to minimize future serious academic laboratory incidents as well as stressing the need for committed leadership from our research institutions.
Assuntos
Prevenção de Acidentes/métodos , Segurança Química/métodos , Pesquisa/educação , Gestão da Segurança/métodos , Acidentes/psicologia , Atitude , Química , Cultura , Humanos , LaboratóriosRESUMO
INTRODUCTION: Syphilis is a sexually transmitted disease. All organs might be affected, but ocular syphilis only occurs in 0.6 percent of patients. We collected all cases of ocular syphilis requiring hospitalization at the University Hospital Center (UHC) in Marseille in 2017. PATIENTS AND METHODS: This was a retrospective monocentric study. The diagnosis of ocular syphilis was based on the combination of ocular inflammation with a positive syphilitic serology. For each patient, sex, age, HIV status, ocular and extraocular symptoms, initial visual acuity, syphilis serology, cerebrospinal fluid (CSF) analysis if done, treatment and clinical response were collected. RESULTS: Ten men and two women, aged 28 to 86 years, were hospitalized. Two patients were HIV-positive. Ophtalmological lesions were heterogeneous the posterior structures were most affected. Anterior uveitis was isolated in one patient. Five patients had extraocular signs with cutaneous and/or mucosal involvement. No patient had neurological symptoms. Diagnosis of neurosyphilis through CSF analysis was definite for one patient, probable for 5 patients and ruled out for 2 patients. Six patients received treatment with penicillin G and six with ceftriaxone. Visual acuity improved in all cases. DISCUSSION: Ophtalmic cases of syphilis have become more frequent over the past few years in France. The diagnosis should be suspected in cases of eye inflammation even in the absence of favourable clinical presentation or anamnesis. Search for HIV co-infection should be systematic. Our study shows that ceftriaxone remains an effective alternative to penicillin G.
Assuntos
Doenças Transmissíveis Emergentes/epidemiologia , Infecções Oculares Bacterianas/epidemiologia , Sífilis/epidemiologia , Infecções Oportunistas Relacionadas com a AIDS/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Infecções Oculares Bacterianas/microbiologia , Feminino , França/epidemiologia , HIV , Infecções por HIV/epidemiologia , Infecções por HIV/microbiologia , Humanos , Masculino , Pessoa de Meia-Idade , Neurossífilis/epidemiologia , Estudos Retrospectivos , Doenças Bacterianas Sexualmente Transmissíveis/epidemiologia , Sífilis/complicações , Sífilis/microbiologia , Uveíte/epidemiologia , Uveíte/microbiologiaRESUMO
OBJECTIVES: Mycoplasma pneumoniae is a common aetiological agent of community-acquired respiratory tract infections for which macrolides are the treatment of choice. In France, only two macrolide-resistant isolates were reported in 1999. In contrast, several recent data reported that macrolide-resistant M. pneumoniae isolates have been spreading since 2000 in Japan. Mutations A2058G (Escherichia coli numbering), A2058C, A2059G, A2062G, C2611A and C2611G in domain V of the 23S rRNA gene were associated in vivo or in vitro with this resistance. The aim of this study was to determine whether macrolide resistance of M. pneumoniae is emerging in France. PATIENTS AND METHODS: We developed a duplex real-time PCR for the detection of the six 23S rRNA mutations associated with macrolide resistance in M. pneumoniae and a simplex real-time PCR for the identification of the A2058G mutation, the most common one. Both methods rely on fluorescence resonance energy transfer coupled to melting curve analysis and are directly applicable to clinical samples. The duplex real-time PCR assay, first validated on 40 genetically characterized M. pneumoniae strains, was then applied directly on 248 French respiratory tract clinical samples. RESULTS: Among M. pneumoniae-positive specimens collected before 2005, no macrolide-resistant M. pneumoniae isolate was detected. In contrast, among 51 samples collected between 2005 and 2007, five (9.8%) yielded a resistant genotype, suggesting a recent increase in macrolide-resistant M. pneumoniae isolates in France. CONCLUSIONS: The epidemiological monitoring of macrolide resistance in this species has become necessary in France and Europe, and will be made easier by using these PCR assays.
Assuntos
Antibacterianos/farmacologia , DNA Bacteriano/genética , Farmacorresistência Bacteriana , Macrolídeos/farmacologia , Mycoplasma pneumoniae/efeitos dos fármacos , Reação em Cadeia da Polimerase/métodos , França , Humanos , Mycoplasma pneumoniae/genética , Mycoplasma pneumoniae/isolamento & purificação , Mutação Puntual , RNA Ribossômico 23S/genética , Temperatura de TransiçãoRESUMO
The structure of the basal ganglia appears to be conserved throughout vertebrate evolution, with characteristic cellular and transmitter components in each area, and the same types of afferent input. As described in rodents and primates, depletion of the striatal dopamine results in characteristic motor deficits. To explore if this role of the basal ganglia in modulating motor function was present early in vertebrate evolution, we investigated here the effects of striatal dopamine depletion in the lamprey, a cyclostome, which diverged from the main vertebrate line around 560 million years ago. The lamprey striatum contains the same cellular elements as found in mammals, and receives the same types of input, including a prominent dopamine innervation. We show here that MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine; 100 mg/kg i.p.), a neurotoxin, depletes forebrain and striatal dopamine levels in lamprey to 15% of control values, and has profound effects on motor performance. Twenty-four and 48 h after MPTP injection, lampreys demonstrated marked reductions in spontaneous swimming and the duration of each swimming episode. Impairments in the ability to initiate movements were shown by a decreased rate of initiation. Furthermore, the initiation and maintenance of locomotion induced by olfactory mucosa stimulation was severely impaired, as was the coordination of different motor tasks. These deficits were ameliorated by the dopamine agonist apomorphine. The motor deficits arising after striatal dopamine depletion are thus qualitatively similar in cyclostomes and mammals. The role of the dopamine innervation of the striatum thus appears to be conserved throughout vertebrate evolution.
Assuntos
Dopamina/deficiência , Lampreias/fisiologia , Atividade Motora/fisiologia , Prosencéfalo/fisiologia , 1-Metil-4-Fenil-1,2,3,6-Tetra-Hidropiridina/administração & dosagem , Animais , Dopamina/biossíntese , Dopamina/fisiologia , Antagonistas de Dopamina/administração & dosagem , Atividade Motora/efeitos dos fármacos , Prosencéfalo/efeitos dos fármacos , Natação/fisiologiaRESUMO
This study describes a real-time PCR assay for the detection and identification of Bordetella pertussis and Bordetella parapertussis. The assay is based on amplification of a fragment from the repeat sequence regions IS481 and IS1001 found in B. pertussis and B. parapertussis, respectively, with subsequent species identification by melting curve analysis using SYBR Green chemistry. Discrimination between the two species was straightforward, as the corresponding melting points showed a significant difference of 7 degrees C. The assay was evaluated first with reference strains and retrospective human clinical samples, and then prospectively with 132 human clinical specimens received between March 2003 and December 2005. The assay allowed the rapid detection of 22 positive clinical samples, of which 15, including one fatal case, were not identified by standard culture techniques. The new assay was sensitive and specific, and can be implemented easily using any real-time PCR apparatus.
Assuntos
Bordetella parapertussis/isolamento & purificação , Bordetella pertussis/isolamento & purificação , Reação em Cadeia da Polimerase/métodos , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Prospectivos , Estudos Retrospectivos , Sensibilidade e EspecificidadeRESUMO
Disease relapse remains the first cause of mortality of hematological malignancies after allogeneic hematopoietic stem cell transplantation (allo-HCT). The risk of recurrence is elevated in acute myeloid leukemia (AML) patients with high-risk cytogenetic or molecular abnormalities, as well as when allo-HCT is performed in patients with refractory hematological malignancies or with persistent molecular or radiological (PET-CT scan) residual disease. For high risk AML and myelodysplasia (MDS), a post transplant maintenance strategy is possible, using hypomethylating agents or tyrosine kinase inhibitors (TKI) anti-FLT3 when the target is present. For Philadelphia positive acute lymphoblastic leukemia (ALL), there is a consensus for the use of TKI anti BCR-ABL as post transplant maintenance.
RESUMO
Limited information is available regarding the incidence and features of lymphocyte expansions after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Large granular lymphocytes (LGL) expansions have been reported after bone marrow or peripheral blood, but not after unrelated cord blood (UCB) allo-HSCT, associated with indolent clinical courses and favorable outcomes. Here, we considered 85 recipients of UCB allo-HSCT to more broadly define the impact of lymphocytosis, not limited to LGL. Sustained lymphocytosis was observed in 21 (25%) patients at a median onset of 12.6 months and with a median duration of 12 months. Immunophenotypic analysis showed predominantly CD8+ T and/or polyclonal B-cell expansions. Three patients only had monoclonal T-cell expansion. CMV reactivation was significantly more frequent in the group of patients with lymphocytosis (76% vs 28%, P=0.0001), but was not associated with survival. Conversely, 2-year disease-free survival and overall survival were significantly higher for lymphocytosis patients (85% vs 55%, P=0.01 and 85% vs 63%, P=0.03, respectively). In conclusion, expansion of T or B lymphocytes after UCB allo-HSCT in adults is not a rare event. Although occurring relatively late after transplant, this feature is predictive of a better outcome for the patients.