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1.
BMC Med Educ ; 21(1): 244, 2021 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-33906671

RESUMO

BACKGROUND: The SARS-CoV-2 (COVID-19) pandemic is a global event with unprecedented impact on individuals and communities around the world. The purpose of this study is to use a modified photo-elicitation methodology to examine the impact of the COVID-19 pandemic on the lives of medical students and their communities around the world. METHODS: Participating medical students were asked to take photographs for 14 days. In lieu of an interview, which is customary for photo-elicitation projects, participants were asked to share a reflection (a paragraph or two) for each photograph they contributed to the study. RESULTS: Between April 27th, 2020 and May 11th, 2020 26 students from 19 medical schools across 13 countries shared photographs and reflections. Qualitative analysis of written reflections revealed that medical students felt the impact of the pandemic on several levels 1) individual, 2) interpersonal, 3) educational, and 4) societal. CONCLUSIONS: The COVID-19 pandemic has impacted the lives of medical students on multiple levels. As individuals, students felt emotional distress but found resilience through physical activity and the establishment of new routines. Many students felt isolated as their interpersonal relationships were confined due to social distancing measures. These feelings could be combated with new educational initiatives focused on group collaboration. Lastly, students reflecting on the larger societal implications were concerned with the economic ramifications of the virus and its impact on their future. This study brought together students from several different countries to engage in an applied learning program as a model for equitable global health research.


Assuntos
COVID-19 , Angústia Psicológica , Estudantes de Medicina , Humanos , Pandemias , SARS-CoV-2
2.
Epidemiol Infect ; 145(12): 2466-2472, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28743316

RESUMO

The purpose of this study was to identify predictors of increasing incidence of Spotted Fever Group rickettsioses (SFGR) in Illinois, with a specific focus on weather variables. We analysed cases of SFGR reported to the Illinois Department of Public Health from 2004 to 2013. Surveillance definitions changed in 2008 and 2010, but those changes alone did not account for observed spikes in incidence in 2008, 2012 and 2013. A total of 590 cases of SFGR occurred, with the majority in the southernmost portion of the state. Only 3·4% of the reported cases were considered confirmed under the case definition. Increased mean winter temperature (IRR 1·32, CI 1·25-1·40) and increased precipitation (IRR 1·08, CI 1·04-1·11) were each associated with increased incidence of SFGR. Our findings show that weather appears to play a significant role in explaining the increasing annual incidence of SFGR in Illinois.


Assuntos
Infecções por Rickettsia/epidemiologia , Rickettsia/fisiologia , Tempo (Meteorologia) , Humanos , Illinois/epidemiologia , Incidência , Infecções por Rickettsia/microbiologia
3.
Epidemiol Infect ; 141(5): 953-7, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-22800607

RESUMO

There are very few data on the prevalence of coccidian enteric parasites among low-income adults hospitalized in Chennai, India. Stool samples from 200 patients were screened for selected parasites, enteric bacterial pathogens, and other protozoa over a 3-month period. The study identified 42 (21%) Cryptosporidium, 36 (18%) V. cholerae, 17 (9%) Salmonella, 12 (6%) Isospora, six (3%) helminths, five (3%) Shigella, one (1%) Cyclospora, one (1%) other protozoan, and 0% V. parahaemolyticus cases. Co-infection was present in 21 patients. Cryptosporidium was detected in 17 (81%) of co-infected patients. Our findings highlighted the relatively high proportion of patients in this population with Cryptosporidium and Isospora and suggest that further study be undertaken to determine the utility of broader use of diagnostic testing for coccidian parasites in India. Detection may be beneficial because isosporiasis is treatable and both Isospora and Cryptosporidium are important pathogens in AIDS patients.


Assuntos
Infecções Bacterianas/epidemiologia , Enterite/epidemiologia , Enterite/etiologia , Helmintíase/epidemiologia , Infecções por Protozoários/epidemiologia , Adolescente , Adulto , Idoso , Coinfecção , Fezes/microbiologia , Fezes/parasitologia , Humanos , Índia/epidemiologia , Pessoa de Meia-Idade , Razão de Chances , Fatores de Risco , Adulto Jovem
4.
Ann R Coll Surg Engl ; 105(1): 14-19, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35133208

RESUMO

INTRODUCTION: This study aimed, first, to audit the appropriateness of surgical referrals to an acute surgical unit for urgent assessment and, second, to devise a screening tool for use in the emergency department to categorise patients into those who need an urgent surgical review and those who can be seen in an ambulatory setting within the next few days. METHODS: The first phase of the study was an audit of surgical referrals between 1 and 18 February 2020 to check the appropriateness of the surgical referral. In the second phase, a tool was designed to screen patients who did not require urgent surgical review and could be seen in the ambulatory clinic. A prospective questionnaire study was conducted from 1 February to 24 March 2020 with patients who were admitted to an acute surgical ward. Based on responses to the screening tool, patients were given the outcome of whether they can be discharged and seen in an ambulatory clinic. The accuracy of the screening tool outcome was assessed and compared with actual patient discharge outcomes by the surgical team evaluating patients' electronic medical records. RESULTS: In the first audit of referrals to the acute surgical ward, 206 patients were referred to the acute surgical unit and seen by the senior surgeon. Of these, 142 (68.9%) were discharged on the same day with or without follow-up in the ambulatory surgical clinic. In the prospective questionnaire phase of the study, 98 patients completed the questionnaire. The most common presentation was abdominal pain (n=60) followed by urological symptoms (n=11), symptoms of hernia complication (n=10), abscess (n=7), testicular pain (n=2) and trauma (n=2). Of the patients discharged on the same day, 50% were given ambulatory care appointments and 50% were discharged with no further follow-up. The sensitivity and specificity of the screening tool were 100% and 60.7%, respectively; the overall accuracy was 88.4%. CONCLUSION: A large proportion of patients who are referred to the acute surgical unit can be deferred and seen in the ambulatory clinic. The screening tool used for acute surgical referral had reasonable sensitivity and high specificity to screen patients who can be seen in ambulatory clinics. At the same time, it identified patients who were unwell and required urgent surgical admission.


Assuntos
Hospitalização , Encaminhamento e Consulta , Humanos , Estudos Prospectivos , Serviço Hospitalar de Emergência , Dor Abdominal , Acidentes
5.
PLoS One ; 18(8): e0290816, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37651448

RESUMO

BACKGROUND: Trauma is a leading cause of mortality and morbidity, disproportionately affecting low- and middle-income countries. Musculoskeletal trauma results in the majority of post-traumatic morbidity and disability globally. The literature has reported many performance indicators relating to trauma care, but few specific to musculoskeletal injuries. STUDY OBJECTIVES: The purpose of this study was to establish a practical list of performance indicators to evaluate and monitor the quality and equity of musculoskeletal trauma care delivery in health systems worldwide. METHODS: A scoping review was performed that identified performance indicators related to musculoskeletal trauma care. Indicators were organized by phase of care (general, prevention, pre-hospital, hospital, post-hospital) within a modified Donabedian model (structure, process, outcome, equity). A panel of 21 experts representing 45 countries was assembled to identify priority indicators utilizing a modified Delphi approach. RESULTS: The scoping review identified 1,206 articles and 114 underwent full text review. We included 95 articles which reported 498 unique performance indicators. Most indicators related to the hospital phase of care (n = 303, 60%) and structural characteristics (n = 221, 44%). Mortality (n = 50 articles) and presence of trauma registries (n = 16 articles) were the most frequently reported indicators. After 3 rounds of surveys our panel reached consensus on a parsimonious list of priority performance indicators. These focused on access to trauma care; processes and key resources for polytrauma triage, patient stabilization, and hemorrhage control; reduction and immobilization of fractures and dislocations; and management of compartment syndrome and open fractures. CONCLUSIONS: The literature has reported many performance indicators relating to trauma care, but few specific to musculoskeletal injuries. To create quality and equitable trauma systems, musculoskeletal care must be incorporated into development plans with continuous monitoring and improvement. The performance indicators identified by our expert panel and organized in a modified Donabedian model can serve as a method for evaluating musculoskeletal trauma care.


Assuntos
Fraturas Expostas , Luxações Articulares , Traumatismo Múltiplo , Sistema Musculoesquelético , Humanos , Técnica Delphi
6.
Bone Marrow Transplant ; 57(1): 106-112, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34671121

RESUMO

We evaluated the impact on survival of antithymocyte globulin conditioning (TLI-ATG) with radiation (RT) boost to high risk or residual disease before allogeneic hematopoietic cell transplant (allo-HCT) for adults with lymphoma (excluding mycosis fungoides and low-grade NHL other than SLL/CLL). Of 251 evaluable patients, 36 received an RT boost within 3 months of allo-HCT at our institution from 2001 to 2016. At the time of TLI-ATG, patients who received boost vs no boost had a lower rate of CR (11% vs 47%, p = 0.0003), higher rates of bulky disease (22% vs 4%, p < 0.0001), extranodal disease (39% vs 5%, p < 0.0001), and positive PET (75% vs 28%, p < 0.00001). In the boost group, the median (range) largest axial lesion diameter was 5.2 cm (1.8-22.3). Median follow-up was 50.2 months (range: 1-196). There was no significant difference in OS, time to recurrence, or time to graft failure with vs without boost. A trend toward higher percent donor CD3+ chimerism was seen with vs without boost (p = 0.0819). The worst boost-related toxicity was grade 2 dermatitis. RT boost may help successfully mitigate the risk of high risk or clinically evident residual disease in adults with lymphoma undergoing allo-HCT.


Assuntos
Doença Enxerto-Hospedeiro , Transplante de Células-Tronco Hematopoéticas , Linfoma , Adulto , Soro Antilinfocitário , Humanos , Linfoma/terapia , Neoplasia Residual , Condicionamento Pré-Transplante , Transplante Homólogo
7.
Pain Res Manag ; 2020: 3284623, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33014213

RESUMO

Introduction: Pain is a universal human experience tied to an individual's health but difficult to understand. It is especially important in health emergencies. We performed a two-step quality improvement project to assess pain management by the SAMU ambulance service in Kigali, Rwanda, examining how pain is assessed and treated by ambulance staff to facilitate development of standardized guidelines of pain management in the prehospital setting, which did not exist at the time of the study. Materials and Methods: Deidentified ambulance service records from December 2012 to May 2016 were analyzed descriptively for patient demographics, emergency conditions, pain assessment, and medications given. Then, anonymized, semistructured interviews of ambulance staff were conducted until thematic saturation was achieved. Data were analyzed using a grounded theory approach. Results: SAMU managed 11,161 patients over the study period, of which 6,168 (55%) were documented as reporting pain and 5,010 (45%) received pain medications. Men had greater odds of receiving pain medications compared to women (OR = 3.8, 95% CI (3.5, 4.1), p < 0.01). Twenty interviews were conducted with SAMU staff. They indicated that patients communicate pain in different ways. They reported using informal ways to measure pain or a standardized granular numeric scale. The SAMU team reviewed these results and developed plans to modify practices. Conclusions: We reviewed the existing quality of pain management in the prehospital setting in Kigali, Rwanda, assessed the SAMU staff's perceptions of pain, and facilitated standardization of prehospital pain management through context-specific guidelines.


Assuntos
Serviços Médicos de Emergência/normas , Manejo da Dor/normas , Medição da Dor/normas , Dor/epidemiologia , Melhoria de Qualidade/normas , Adulto , Ambulâncias/normas , Estudos Transversais , Serviços Médicos de Emergência/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor/diagnóstico , Manejo da Dor/métodos , Medição da Dor/métodos , Ruanda/epidemiologia
8.
Traffic Inj Prev ; 21(7): 488-493, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32678676

RESUMO

OBJECTIVE: Road traffic crashes (RTCs) are common among motorcyclists in Kigali, Rwanda. The Service d'Aide Medicale Urgente (SAMU), a prehospital ambulance service, responds to many of these crashes. We aimed to describe motorcycle-related RTCs managed by SAMU. METHODS: SAMU clinical data including demographic information, injury characteristics, and management details were analyzed descriptively for all motorcycle crashes occurring between December 2012 and July 2016. RESULTS: Every patient included in this study was injured. These patients all called the ambulance for their injuries after a motorcycle crash. There were 2,912 motorcycle-related RTCs over the study period, representing 26% of all patients managed by SAMU. The incidence of motorcycle crashes in Kigali was 258 crashes per 100,000 people over the 3.5-year study period. The average age was 30 years and 80% were males. The most common injuries were to the lower extremities (n = 958, 33%), head (n = 878, 30%), or upper extremities (n = 453, 16%). Injuries often resulted in fractures of extremities (n = 740, 25%) and external hemorrhage anywhere in the body (unspecified region; n = 660, 23%), yet few were severe based on the Kampala Trauma Score (n = 23, 2%) and Glasgow Coma Scale (n = 42, 1.5%). The most common interventions were provision of diclofenac (n = 1,526, 52.5%), peripheral intravenous (IV) access (n = 1,217, 42%), and administration of IV fluids (n = 1,048, 36%). CONCLUSION: Motorcycle-related RTCs represent a large burden of disease for patients treated by SAMU in Kigali, Rwanda. Young men are most at risk of injury, which imposes a financial strain on society. Though injuries occurred frequently, critical trauma cases from motorcycle crashes were uncommon. This may be a result of several initiatives in Rwanda to improve road safety.


Assuntos
Acidentes de Trânsito/estatística & dados numéricos , Serviços Médicos de Emergência/estatística & dados numéricos , Motocicletas , Serviços Urbanos de Saúde/estatística & dados numéricos , Ferimentos e Lesões/epidemiologia , Adulto , África Subsaariana/epidemiologia , Feminino , Humanos , Incidência , Masculino , Ferimentos e Lesões/terapia , Adulto Jovem
9.
Science ; 230(4721): 18-24, 1985 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-3929384

RESUMO

During their complex life cycle, myxobacteria manifest a number of cell interactions. These include contact-mediated interactions as well as those mediated by soluble extracellular signals. Some of these interactions are well-defined; in addition, the tools for molecular and genetic analysis of these interactions in Myxococcus xanthus are now available.


Assuntos
Myxococcales/crescimento & desenvolvimento , Microscopia Eletrônica de Varredura , Movimento , Mutação , Myxococcales/genética , Esporos Bacterianos , Transdução Genética
10.
Science ; 187(4177): 653-4, 1975 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-803710

RESUMO

Myxococcus xanthus is a bacterium with an interest for studies of development because it has an organized multicellular phase in its life cycle. Bacteriophage Pl can adsorb to M. xanthus and inject its DNA into this organism despite the wide taxonomic gap separating myxococcus from Escherichia coli, the source of Pl. A specialized transducing derivative of Pl, called PlCM, can carry a gene for chloramphenicol resistance from E. coli into M. xanthus and generate unstable drug-resistant strains.


Assuntos
Colífagos , Escherichia coli , Myxococcales , Transdução Genética , Cloranfenicol , Cromossomos Bacterianos , DNA Viral , Resistência Microbiana a Medicamentos , Escherichia coli/efeitos dos fármacos , Genes , Myxococcales/efeitos dos fármacos
11.
Epidemiol Infect ; 137(11): 1609-14, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19351432

RESUMO

The high morbidity and mortality of necrotizing fasciitis (NF) supports the need for epidemiological studies to characterize the disease and identify patient factors associated with adverse outcomes. A multi-site medical record review of patients diagnosed with NF was performed (n=80, mortality 15%). Variables collected were hypothesized to have association with adverse outcomes from NF, and multivariable analysis was used to detect any such association in this population. Select factors associated with mortality included evidence of underlying conditions (P=0.002), advanced age (P=0.04), young age (P=0.03), and evidence of sepsis (P=0.006). Select factors associated with amputation included diabetes mellitus (P=0.006), evidence of underlying conditions (P=0.03), and cutaneous gangrene noted on admission (P=0.006). These findings demonstrate the important association of NF and extremes of age with mortality and morbidity and support the value of early suspicion with prompt diagnosis and treatment in order to prevent adverse outcomes since the associated risk factors are not immediately modifiable.


Assuntos
Fasciite Necrosante/complicações , Fasciite Necrosante/mortalidade , Adulto , Fatores Etários , Idoso , Amputação Cirúrgica/mortalidade , Chicago/epidemiologia , Infecções por Clostridium/mortalidade , Fasciite Necrosante/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Estudos Retrospectivos , Fatores de Risco , Sepse/complicações , Sepse/mortalidade , Fatores Sexuais , Infecções Estreptocócicas/mortalidade , Streptococcus pyogenes/isolamento & purificação
12.
Int J STD AIDS ; 20(9): 623-7, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19710335

RESUMO

Population-based surveillance data can help guide research priorities and plan programmes to prevent death among women with AIDS. We describe the predictors of mortality among women diagnosed with AIDS in Illinois, USA. Using the HIV/AIDS Reporting System), we identified 1944 adult women who were diagnosed with AIDS during January 1999-December 2004. The proportion of women who died within one year of diagnosis of AIDS declined from 97% in 1999 to 12% in 2005. Multivariate analysis indicated that age >or=45 years, intravenous drug use, diagnosis of clinical AIDS and hospitalization at the time of AIDS diagnosis were significant predictors of death among women with AIDS. The number of women who died soon after diagnosis with AIDS declined substantially. Nevertheless, prevention programmes designed to improve survival among women with AIDS should emphasize early diagnosis and referral for care in an effort to prevent first diagnosis with clinical AIDS during hospitalization.


Assuntos
Síndrome da Imunodeficiência Adquirida/mortalidade , Síndrome da Imunodeficiência Adquirida/etnologia , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Illinois/epidemiologia , Pessoa de Meia-Idade
13.
Trends Biochem Sci ; 16(6): 229-34, 1991 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-1891803

RESUMO

Xenopus embryos undergoing cleavage utilize amino acids as their main carbon source for metabolism. Glycolysis (from stored glycogen) begins near the onset of gastrulation. Thus, a major transition in the metabolism of the early embryo occurs before morphological differentiation. The enzymology that supports the carbon metabolism of the cleaving amphibian embryo resembles that of many mammalian tumor cells.


Assuntos
Carbono/metabolismo , Gástrula/metabolismo , Xenopus/embriologia , Aminoácidos/metabolismo , Animais , Glicólise
15.
Mol Cell Biol ; 1(11): 983-93, 1981 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-6180297

RESUMO

The distribution of cytoplasmic messenger ribonucleic acids (RNAs) in translationally active polysomes and inactive ribonucleoprotein particles changes during early development. Cellular levels and subcellular distributions have been determined for most messenger RNAs, but little is known about how individual sequences change. In this study, we used hybridization techniques with cloned sequences to measure the titers of 23 mitochondrial and non-mitochondrial polyadenylate-containing [poly(A)+]RNA species during early development in the frog Xenopus laevis. These RNA species were some of the most abundant cellular poly(A)+ RNA species in early embryos. The concentrations of most of the non-mitochondrial (cytoplasmic) RNAs remained constant in embryos during the first 10 h of development, although the concentrations of a few species increased. During neurulation, we detected several new poly(A)+ RNA sequences in polysomes, and with one possible exception the accumulation of these sequences was largely the result of new synthesis or de novo polyadenylation and not due to the recruitment of nonpolysomal (free ribonucleoprotein) poly(A)+ RNA. We measured the subcellular distributions of these RNA species in polysomes and free ribonucleoproteins during early development. In gastrulae, non-mitochondrial RNAs were distributed differentially between the two cell fractions; some RNA species were represented more in free ribonucleoproteins, and others were represented less. By the neurula stage this differential distribution in polysomes and free ribonucleoproteins was less pronounced, and we found species almost entirely in polysomes. Some poly(A)+ RNA species transcribed from the mitochondrial genome were localized within the mitochondria and were mapped to discrete fragments of the mitochondrial genome. Much of this poly(A)+ RNA was transcribed from the ribosomal locus. Nonribosomal mitochondrial poly(A)+ RNA species became enriched in polysome-like structures after fertilization, with time courses similar to the time course of mobilization of cytoplasmic poly(A)+ RNA.


Assuntos
Regulação da Expressão Gênica , Poli A/metabolismo , RNA/metabolismo , Xenopus laevis/embriologia , Animais , Sequência de Bases , Fracionamento Celular , Citoplasma/metabolismo , DNA Mitocondrial/genética , DNA Recombinante , Hibridização de Ácido Nucleico , Polirribossomos/metabolismo , RNA Mensageiro , Ribonucleoproteínas/metabolismo
16.
Med Mal Infect ; 47(7): 470-476, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28943166

RESUMO

OBJECTIVE: To explore knowledge on syphilis, sexual behaviors, and attitudes in men living with HIV in southwestern France. PATIENTS AND METHODS: In the ANRS CO3 Aquitaine Cohort of people living with HIV (PLHIV), a self-administered questionnaire was proposed to all male PLHIV attending one of the seven participating clinics between September 22 and October 24, 2014. The 15 questions explored patient knowledge about syphilis disease, attitudes, and behaviors during sexual intercourse. RESULTS: Among 302 patients surveyed, 101 reported at least one episode of syphilis. A history of syphilis was associated with awareness that syphilis was on the rise in men who have sex with men (MSM) in the Aquitaine region (46% vs. 22%, P<0.0001). Knowledge that syphilis could be transmitted by oral sex was low in both patients with (37%) and without (20%) a history of syphilis (P=0.0045). Patients with a history of syphilis more often used recreational drugs (RR 1.6; P=0.0028). Among 160 patients who had sexual intercourse with a man in the past 12 months, 23% reported using condoms for oral intercourse and 80% reported using condoms for anal intercourse. Sixty-two per cent of MSM declared being ready to change their practice if informed about the rise in syphilis. CONCLUSIONS: This survey revealed important information gaps in PLHIV about syphilis and related behavior. The reported receptiveness of this population to behavioral change may help inform educational interventions.


Assuntos
Infecções por HIV/psicologia , Conhecimentos, Atitudes e Prática em Saúde , Sífilis/psicologia , Adulto , Preservativos/estatística & dados numéricos , França/epidemiologia , Infecções por HIV/epidemiologia , Humanos , Drogas Ilícitas , Comportamento de Busca de Informação , Masculino , Pessoa de Meia-Idade , Assunção de Riscos , Autorrelato , Comportamento Sexual , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Inquéritos e Questionários , Sífilis/epidemiologia , Sífilis/transmissão , Sexo sem Proteção
17.
Mech Dev ; 35(3): 213-25, 1991 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-1768622

RESUMO

The Xenopus D7 gene codes for a novel protein whose expression is restricted to early development. D7 protein is synthesized for the first time during oocyte maturation (1988, Genes Dev. 2, 1296-1306). Injection of D7 RNA into the full-grown oocyte and its subsequent translation into D7 protein neither induced oocyte maturation nor affected the kinetics of hormone-induced maturation. Overexpression of D7 protein by 20-fold in the early Xenopus embryo by injection of D7 RNA into fertilized eggs did not affect subsequent development. Oocytes specifically lacking D7 mRNA were generated by oligodeoxynucleotide-mediated RNA destruction within the oocyte. Unfertilized eggs generated from such oocytes lacked detectable D7 protein, but nevertheless could be activated and fertilized. Embryos generated from such eggs, estimated to contain less than 5% of wildtype levels of D7 protein, developed normally up to the tailbud stage. Thus the D7 protein, the product of a maternal mRNA that is under strict translational repression in oocytes, appears not to be required for oocyte maturation, activation, fertilization or early embryonic development in Xenopus.


Assuntos
Proteínas do Ovo/genética , Animais , Elementos Antissenso (Genética) , Sequência de Bases , Células Cultivadas , Embrião não Mamífero/metabolismo , Fertilização , Regulação da Expressão Gênica , Dados de Sequência Molecular , Oligodesoxirribonucleotídeos , Oócitos/citologia , Oócitos/metabolismo , Oogênese , Xenopus laevis
18.
AIDS ; 15(9): 1149-55, 2001 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-11416717

RESUMO

OBJECTIVE: To determine the risk factors for and trends in gonorrhea infections among HIV-infected persons. DESIGN: Longitudinal review of medical records of HIV-infected patients. METHODS: We analyzed data about HIV-infected patients obtained from 1991 to 1998 in over 100 facilities participating in the Adult/Adolescent Spectrum of HIV Disease Project. RESULTS: The overall incidence of gonorrhea was 9.5 cases per 1000 person--years. Factors associated with higher gonorrhea incidence (P < 0.01) included younger age, male--male sex, black race, HIV infection without AIDS (namely AIDS-defining opportunistic illness or CD4 cell count < 200 x 10(6) cells/l), and recent recreational use of injection or non-injection drugs. There was an increase in the trend among men who have sex with men (P < 0.01) and a decrease in the trend among patients with heterosexual contact as their HIV exposure risk (P < 0.01). Among injection drug users there was no significant trend from 1991 to 1996, but there was an increase in gonorrhea incidence from 6.6 cases/1000 person-years in 1997 to 16.3 cases/1000 person--years in 1998. CONCLUSIONS: Following HIV diagnosis, some individuals continue to practice risky sexual behaviors which result in gonorrhea and may transmit HIV. The increase in the trend in gonorrhea incidence among HIV-infected men who have sex with men is of particular concern because it suggests an increase in risky sexual behaviors. These findings indicate a need for effective HIV prevention strategies that involve reducing risky sexual behaviors in HIV-infected persons.


Assuntos
Infecções Oportunistas Relacionadas com a AIDS/epidemiologia , Gonorreia/epidemiologia , HIV-1 , Adolescente , Adulto , Feminino , Seguimentos , Homossexualidade Masculina , Humanos , Incidência , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Abuso de Substâncias por Via Intravenosa , Estados Unidos/epidemiologia
19.
AIDS ; 14(17): 2781-5, 2000 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-11125897

RESUMO

OBJECTIVE: To describe the effect of influenza vaccination on long-term change in CD4 count and HIV RNA level, and on progression to AIDS or death. DESIGN AND SETTING: A longitudinal medical record review set in 113 medical clinics in 10 United States cities. PATIENTS: A total of 36,050 HIV-infected persons aged > or = 13 years in care for HIV infection. MAIN OUTCOME MEASURES: Change in CD4 count and HIV RNA level at follow-up (3-12 months after vaccination); hazard ratios (HR) for association of influenza vaccine with progression from baseline CD4 or HIV RNA level to AIDS and to death. RESULTS: The median CD4 count among all persons decreased 28 cells/year during follow-up, with no difference in change in CD4 count between the 8007 (40%) vaccinated (median = 6 months, vaccine to follow-up CD4 count) and the 11,794 unvaccinated persons. In a viral load subanalysis, median HIV RNA level decreased 90 copies/ml per year among all persons during follow-up; decreases were not different between vaccinated and unvaccinated persons (median = 7 months, vaccine to follow-up HIV RNA level determination). Influenza vaccination was weakly associated with decreased risk of progression to clinical AIDS [HR 0.93; 95% confidence interval (CI), 0.87-0.99], but not associated with time to death (HR, 0.97; CI, 0.93-1.01). CONCLUSIONS: No negative long-term effect of influenza vaccination on CD4 counts, HIV RNA levels, or progression to AIDS or death was found in this HIV-infected population. These data suggest that physicians should not withhold influenza vaccine because of concerns about long-term detrimental effects of increased viral replication.


Assuntos
Infecções por HIV/imunologia , Infecções por HIV/virologia , Vacinas contra Influenza/efeitos adversos , Síndrome da Imunodeficiência Adquirida/imunologia , Síndrome da Imunodeficiência Adquirida/mortalidade , Síndrome da Imunodeficiência Adquirida/fisiopatologia , Síndrome da Imunodeficiência Adquirida/virologia , Adolescente , Adulto , Contagem de Linfócito CD4 , Contraindicações , Progressão da Doença , Etnicidade , Feminino , Seguimentos , Infecções por HIV/mortalidade , Infecções por HIV/fisiopatologia , HIV-1/genética , HIV-1/fisiologia , Humanos , Influenza Humana/prevenção & controle , Masculino , RNA Viral/análise , RNA Viral/genética , Grupos Raciais , Fatores de Risco , Fatores de Tempo , Vacinação/efeitos adversos , Carga Viral
20.
AIDS ; 15(14): 1831-6, 2001 Sep 28.
Artigo em Inglês | MEDLINE | ID: mdl-11579245

RESUMO

OBJECTIVE: We investigated whether HIV plasma RNA (viral load; VL) predicts risk for opportunistic infections (OI) in HIV-infected persons, independent of CD4 lymphocyte count and other factors that might affect disease outcome. METHODS: Among persons who had initiated antiretroviral therapy (ART), we studied the risk for OI following a VL measurement in the Centers for Disease Control and Prevention Adult and Adolescent Spectrum of HIV Disease (ASD) Project, a medical record review study of HIV-infected persons in 11 US cities. Analysis was limited to persons who had initiated ART and who had VL data, primarily from the period 1996-1999. Persons were considered at risk for OI for 1 to 6 months after a given VL; risk for OI was assessed using a Poisson multiple regression model controlling for CD4 lymphocyte count, ART, and other variables potentially associated with development of OI: history of AIDS OI, age, sex, race, HIV risk category, OI prophylaxis, and calendar year. RESULTS: Although decreasing CD4 count was the strongest predictor of risk for OI [relative risk (RR), 13.3 for persons with CD4 lymphocyte count < 50 x 10(6)/l compared with persons with CD4 lymphocyte count > or = 500 x 10(6)/l], increasing VL was independently associated with increased risk [RR, 1.6, 1.9, 2.7, and 3.5 for VL of 7000-19 999, 20 000-54 999, 55 000-149 999, and > or = 150 000 copies/ml (by reverse transcription-PCR), respectively, compared with VL < 400]. Similar results were obtained when the risk period was reduced to 5, 4, 3, and 2 months after VL measurement. CONCLUSIONS: VL is an independent risk factor for OI and should be considered in special situations, such as in decisions to discontinue primary or secondary OI prophylaxis after CD4 lymphocyte counts have increased in response to ART.


Assuntos
Infecções Oportunistas Relacionadas com a AIDS/etiologia , Infecções por HIV/virologia , HIV-1/fisiologia , RNA Viral/sangue , Carga Viral , Adulto , Terapia Antirretroviral de Alta Atividade , Contagem de Linfócito CD4 , Feminino , Infecções por HIV/tratamento farmacológico , Humanos , Masculino , Fatores de Risco
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