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1.
Health Educ Res ; 36(2): 170-177, 2021 04 12.
Artigo em Inglês | MEDLINE | ID: mdl-33599272

RESUMO

Structural inequities and lack of resources put vulnerable refugee communities at great risk. Refugees flee their country of origin to escape persecution and flee from war, famine and torture. Resettled refugee communities become particularly vulnerable during times of crisis due to limited English proficiency and poor social determinants of health (SDOH), which create barriers to attaining and sustaining health and wellbeing for themselves and their families. The purpose of this case study was to evaluate SDOH among a refugee community in the Southeastern United States. We surveyed the community twice during a 1-year period to assess various elements of SDOH. Among a primarily African and Southeast Asian refugee community, 76% reported difficulty paying for food, housing and healthcare during the first round of surveys. During the second round of surveys at the beginning of the Coronavirus pandemic, 70% reported lost income; 58% indicated concern about paying bills. There was little change during the 12-month study period, showing that SDOH are an enduring measure of poor health and wellbeing for this vulnerable refugee community.


Assuntos
Disparidades nos Níveis de Saúde , Refugiados , Determinantes Sociais da Saúde , Populações Vulneráveis , Povo Asiático , População Negra , COVID-19 , Habitação , Humanos , Pandemias , Saúde Pública , Sudeste dos Estados Unidos
2.
Trop Anim Health Prod ; 51(7): 1963-1968, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31065932

RESUMO

A study was conducted to compare conception rates in 71 Tuli and 86 Afrikander beef cattle bred using either artificial insemination (AI) or the bull. Animals were bred using either artificial insemination or natural service at Matopos Research Station. Animals were grouped into three groups of heifers (parity 0; P0), second calvers (parity 1; P1) and mature cows (parity 2; P2) before being randomly assigned to one of the two breeding methods. A binary logistic regression was used for statistical analysis where breeding method (AI vs natural service) was the treatment factor and conception rate was the measured response while breed, parity and last calving date were non-treatment factors. No significant differences were observed in conception rates between breeds (P > 0.05). However, the method of breeding animals, parity and calving interval affected (P < 0.05) conception rates. The breeding method, parity and calving interval had a positive Kendall's tau-b correlation coefficients to conception. More animals were pregnant when AI (77.6%) was used compared with natural mating (56.79%). Conception rates were significantly lower (P < 0.05) in C1 compared with C2 cattle. The odds ratio for breeding method and parity are positive and significant (P < 0.05). In conclusion, the study confirms that artificial inseminated animals had similar conception rates to naturally serviced animals for both Tuli and Afrikander breeds. As such, artificial insemination technology can be used to complement or substitute natural service in indigenous cattle's of Zimbabwe.


Assuntos
Bovinos/fisiologia , Fertilização , Inseminação Artificial/veterinária , Animais , Cruzamento , Feminino , Masculino , Paridade , Zimbábue
3.
BMC Musculoskelet Disord ; 18(1): 195, 2017 05 16.
Artigo em Inglês | MEDLINE | ID: mdl-28511678

RESUMO

BACKGROUND: Fibromyalgia (FM), a disorder characterized by chronic widespread pain and tenderness, affects greater than five million individuals in the United States alone. Patients experience multiple symptoms in addition to pain, and among them, fatigue is one of the most bothersome and disabling. There is a growing body of literature suggesting that fatigue is a multidimensional concept. Currently, to our knowledge, no multidimensional Patient Reported Outcome (PRO) measure of FM-related fatigue meets Food and Drug Administration (FDA) requirements to support a product label claim. Therefore, the objective of this research was to evaluate qualitative and quantitative data previously gathered to inform the development of a comprehensive, multidimensional, PRO measure to assess FM-related fatigue in FM clinical trials. METHODS: Existing qualitative and quantitative data from three previously conducted studies in patients with FM were reviewed to inform the initial development of a multidimensional PRO measure of FM-related fatigue: 1) a concept elicitation study involving in-depth, open-ended interviews with patients with FM in the United States (US) (N = 20), Germany (N = 10), and France (N = 10); 2) a cognitive debriefing and pilot study of a preliminary pool of 23 items (N = 20 US patients with FM); and 3) a methodology study that explored initial psychometrics of the item pool (N = 145 US patients with FM). RESULTS: Five domains were identified that intend to capture the broad experience of FM-related fatigue reported in the qualitative research: the Global Fatigue Experience, Cognitive Fatigue, Physical Fatigue, Motivation, and Impact on Function. Seventeen of the original pool of 23 items were selected to best capture these five dimensions. These 17 items formed the basis of a newly developed multidimensional PRO measure to assess FM-related fatigue in clinical trials: the Multidimensional Daily Diary of Fatigue-Fibromyalgia-17 (MDF-Fibro-17). CONCLUSION: Qualitative analysis, and preliminary quantitative item level data, confirmed that FM-related fatigue is multidimensional and provided strong support for the content validity of the MDF-Fibro-17. The next stage was to quantitatively evaluate the measure to confirm the factor structure, psychometric properties, sensitivity to change, and meaningful change. This has been conducted and is being reported separately.


Assuntos
Fadiga/diagnóstico , Fibromialgia/diagnóstico , Fibromialgia/epidemiologia , Prontuários Médicos/normas , Autorrelato/normas , Estudos Transversais , Fadiga/epidemiologia , Feminino , França/epidemiologia , Alemanha/epidemiologia , Humanos , Masculino , Projetos Piloto , Reprodutibilidade dos Testes , Estados Unidos/epidemiologia
4.
BMC Musculoskelet Disord ; 18(1): 198, 2017 05 18.
Artigo em Inglês | MEDLINE | ID: mdl-28521738

RESUMO

BACKGROUND: The Multidimensional Daily Diary of Fatigue-Fibromyalgia-17 instrument (MDF-Fibro-17) has been developed for use in fibromyalgia (FM) clinical studies and includes 5 domains: Global Fatigue Experience, Cognitive Fatigue, Physical Fatigue, Motivation, and Impact on Function. Psychometric properties of the MDF-Fibro-17 needed to demonstrate the appropriateness of using this instrument in clinical studies are presented. METHODS: Psychometric analyses were conducted to evaluate the factor structure, reliability, validity, and responsiveness of the MDF-Fibro-17 using data from a Phase 2 clinical study of FM patients (N = 381). Confirmatory factor analyses (CFA) were performed to ensure understanding of the multidimensional domain structure, and a secondary factor analysis of the domains examined the appropriateness of calculating a total score in addition to domain scores. Longitudinal psychometric analyses (test-retest reliability and responder analysis) were also conducted on the data from Baseline to Week 6. RESULTS: The CFA supported the 17-item, 5 domain structure of this instrument as the best fit of the data: comparative fit index (CFI) and non-normed fit index (NNFI) were 0.997 and 0.992 respectively, standardized root mean square residual (SRMR) was 0.010 and the root mean square error of approximation (RMSEA) was 0.06. In addition, total score (CFI and NNFI both 0.95) met required standards. For the total and 5 domain scores, reliability and validity data were acceptable: test-retest and internal consistency were above 0.9; correlations were as expected with the Global Fatigue Index (GFI) (0.62-0.75), Fibromyalgia Impact Questionnaire (FIQ) Total (0.59-0.71), and 36-Item Short Form Health Survey (SF-36) vitality (VT) (0.43-0.53); and discrimination was shown using quintile scores for the GFI, FIQ Total, and Pain Numeric Rating Scale (NRS) quartiles. In addition, sensitivity to change was demonstrated with an overall mean responder score of -2.59 using anchor-based methods. CONCLUSION: The MDF-Fibro-17 reliably measures 5 domains of FM-related fatigue and psychometric evaluation confirms that this measure meets or exceeds each of the predefined acceptable thresholds for evidence of reliability, validity, and responsiveness to changes in clinical status. This suggests that the MDF-Fibro-17 is an appropriate and responsive measure of FM-related fatigue in clinical studies.


Assuntos
Computadores de Mão/normas , Fadiga/diagnóstico , Fibromialgia/diagnóstico , Prontuários Médicos/normas , Autorrelato/normas , Adulto , Fadiga/epidemiologia , Feminino , Fibromialgia/epidemiologia , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Psicometria
5.
J Helminthol ; 90(6): 784-788, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26482155

RESUMO

Paramphistomes are parasites of domestic and wild ruminants, the effects of which in animal health remain underestimated. Very few studies in Africa have been done using molecular techniques to resolve situations associated with taxonomical groupings and epidemiology of these parasites. In this study, the genetic variability of nine representative paramphistome isolates collected from southern African countries, namely Botswana, South Africa, Zambia and Zimbabwe, was assessed using both morphological and internal transcribed spacer 2 (ITS2) rDNA sequence data. Morphological characterization and identification were carried out using median sagittal sections of the paramphistomes. DNA of the individual paramphistomes was isolated, the ITS2 rDNA was amplified, purified and sequenced. The sequences were submitted to GenBank, which assigned them the following accession numbers: KP639631, KP639630, KP639632, KP639633, KP639634, KP639635, KP639636, KP639637 and KP639638. These sequences were used for phylogenetic analysis using MEGA 6. Morphological characterization revealed three species of paramphistomes belonging to three different sub-families: one Stephanopharynx compactus isolate, a member of the Stephanopharyngidae sub-family; one Carmyerius dollfusi isolate, a member of the Gastrothylacidae sub-family; and seven Calicophoron microbothrium isolates belonging to the Paramphistomidae sub-family. ITS2 sequence analysis using BlastN results indicated that this is the first report of S. compactus (KP639630) and C. dollfusi (KP639636). Phylogenetic reconstruction of the paramphistome isolates revealed three separate clades representing the three species. However, the clade with all the C. microbothrium isolates was the only one that was supported by a higher bootstrap value of 92%, although there was no differentiation of the isolates according to geographical locations. The low divergence values on the ITS2 sequences of the C. microbothrium isolates indicate that ITS rDNA sequences can be used as a molecular tool to infer knowledge for resolving taxonomic groupings.


Assuntos
Doenças dos Bovinos/parasitologia , Trematódeos/classificação , Trematódeos/isolamento & purificação , Infecções por Trematódeos/veterinária , África Austral , Animais , Bovinos , Análise por Conglomerados , DNA de Helmintos/química , DNA de Helmintos/genética , DNA Espaçador Ribossômico/química , DNA Espaçador Ribossômico/genética , Filogenia , Análise de Sequência de DNA , Trematódeos/anatomia & histologia , Trematódeos/genética , Infecções por Trematódeos/parasitologia
6.
Diabet Med ; 30(6): 664-70, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23683103

RESUMO

Carbohydrate metabolism in humans is regulated by insulin secretion from pancreatic ß-cells and glucose disposal by insulin-sensitive tissues. Insulin facilitates glucose utilization in peripheral tissues and suppresses hepatic glucose production. Any defects in insulin action predispose an individual to glucose intolerance and Type 2 diabetes mellitus. Early detection of defects in insulin action could provide opportunities to prevent or delay progression of the disease state. There are different approaches to assess insulin action. Initial methods, such as peripheral insulin concentration and simple indices, have several limitations. Subsequently, researchers developed methodologies using intravenous glucose infusion to determine glucose fluxes. However, these methodologies are limited by being non-physiological. Newer, innovative techniques that have been developed are more sophisticated and physiological. By modelling glucose kinetics using isotope dilution techniques, several robust parameters can be obtained that are physiologically relevant and sound. This brief review summarizes most of the non-physiological and physiological methodologies used to measure the variables of insulin action.


Assuntos
Metabolismo dos Carboidratos/efeitos dos fármacos , Hipoglicemiantes/farmacologia , Resistência à Insulina , Células Secretoras de Insulina/metabolismo , Insulina/metabolismo , Insulina/farmacologia , Modelos Biológicos , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Intolerância à Glucose/tratamento farmacológico , Intolerância à Glucose/metabolismo , Humanos , Hipoglicemiantes/metabolismo , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Secreção de Insulina , Cinética
7.
J Sex Res ; : 1-15, 2023 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-37556729

RESUMO

Virtual reality (VR) may improve our understanding of sexual dysfunctions' manifestations, although research in this area remains limited. This study assessed the potential use of a VR Behavior Avoidance Test (VR-BAT) as a tool for examining the clinical features of Sexual Aversion Disorder (SAD): the experience of fear, disgust, and avoidance when facing sexual cues/contexts. A sample of 55 adults (≥ 18y) with (n = 27) and without SAD (n = 28) completed a self-report measure of sexual avoidance. Their anxiety, disgust, electrodermal activity, heart rate, and visual and behavioral avoidance were then examined during two VR-BATs involving sexual or non-sexual stimuli. Mixed repeated measures ANOVAs, t-tests, and correlational analyses were performed. Results showed that individuals in the SAD group reported greater anxiety and disgust compared to their non-SAD counterparts during the sexual stimuli condition. Sexual avoidance scores were largely positively related to anxiety and disgust during the VR sexual condition, and moderately negatively related to the time spent touching the virtual character's genitals. This study is important given the prevalence of sexual difficulties, such as SAD, and the new research avenues offered by emerging technologies, like VR.

8.
J Sex Res ; 60(2): 165-176, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-34878963

RESUMO

Space poses significant challenges for human intimacy and sexuality. Life in space habitats during long-term travel, exploration, or settlement may: detrimentally impact the sexual and reproductive functions of astronauts, restrict privacy and access to intimate partners, impose hygiene protocols and abstinence policies, and heighten risks of interpersonal conflicts and sexual violence. Together, this may jeopardize the health and well-being of space inhabitants, crew performance, and mission success. Yet, little attention has been given to the sexological issues of human life in space. This situation is untenable considering our upcoming space missions and expansion. It is time for space organizations to embrace a new discipline, space sexology: the scientific study of extraterrestrial intimacy and sexuality. To make this case, we draw attention to the lack of research on space intimacy and sexuality; discuss the risks and benefits of extraterrestrial eroticism; and propose an initial biopsychosocial framework to envision a broad, collaborative scientific agenda on space sexology. We also underline key anticipated challenges faced by this innovative field and suggest paths to solutions. We conclude that space programs and exploration require a new perspective - one that holistically addresses the intimate and sexual needs of humans - in our pursuit of a spacefaring civilization.


Assuntos
Sexologia , Comportamento Sexual , Humanos , Comportamento Sexual/psicologia , Sexualidade/psicologia , Parceiros Sexuais , Relações Interpessoais
9.
S Afr J Sports Med ; 34(1): v34i1a13310, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36815911

RESUMO

Background: Relative age effect (RAE) refers to the over-representation of athletes born earlier in the calendar year covering a specific sport. The RAE is especially prevalent in youth sports but often persists into senior competitive levels. Objectives: To determine the prevalence and magnitude of the RAE among student-athletes in a high performance (HP) programme at a South African university, according to year, sports code and sex, compared to the general student cohort. Methods: Cross-sectional descriptive analysis of HP-student-athletes and an age-matched student cohort from 2016 to 2021. Birthdate data were extracted for the HP student-athletes (N = 950: men = 644, women = 306) and student comparison group (N = 47 068; men = 20 464; women = 26 591; not disclosed = 13). Differences were determined using Chi-squared and Fisher's exact test. Residuals examined relative age quartile differences. The steps were applied across academic years, sport code and sex. Results: The RAE was more pronounced among the student-athletes compared to the age-matched student cohort. The RAE was occasionally observed among the HP-student-athletes; however, the prevalence was inconsistent across the respective years under investigation and only noted in certain sport codes (i.e. swimming, rugby union and cricket). There were no sex differences among the HP student-athletes. Conclusion: Where the RAE was noted, the selection bias favoured the relatively older student-athletes. The mechanisms for RAE are multifactorial and complex. A combination of factors, such as competition depth, the popularity and physicality of a sport and socialisation may be involved.

10.
J Sex Res ; : 1-11, 2022 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-36449349

RESUMO

Robots designed to elicit sexual arousal are coming. Sexual arousal can increase our willingness to engage in risky or unconventional sexual behaviors. However, researchers have yet to examine whether this effect extends to robots. Hence, this study provides the first empirical evidence that state sexual arousal can increase our willingness to engage erotically with robots. Based on previous research, we hypothesized that levels of sexual arousal would positively predict willingness to engage erotically with robots (Hypothesis 1); and that men would be more willing to engage erotically with robots than women (Hypothesis 2). A convenience sample of 321 adults (≥18y) completed a two-part online survey measuring their willingness to have sex with, love, engage in an intimate relationship with, and be friends with a robot and a human before and after viewing a sexually explicit video. The results partly support Hypotheses 1-2. They show that state sexual arousal increases willingness to have sex with a robot, and that men are more willing to have sex and engage in an intimate relationship with a robot than women, pre- and post-manipulation. These findings are important given the rise of sex robots and their potential influence on our intimate decisions and behaviors.

11.
Sex Transm Infect ; 87(7): 621-8, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21636615

RESUMO

OBJECTIVES: To develop projections of the resources required (person-years of drug supply and healthcare worker time) for universal access to antiretroviral treatment (ART) in Zimbabwe. METHODS: A stochastic mathematical model of disease progression, diagnosis, clinical monitoring and survival in HIV infected individuals. FINDINGS: The number of patients receiving ART is determined by many factors, including the strategy of the ART programme (method of initiation, frequency of patient monitoring, ability to include patients diagnosed before ART became available), other healthcare services (referral rates from antenatal clinics, uptake of HIV testing), demographic and epidemiological conditions (past and future trends in incidence rates and population growth) as well as the medical impact of ART (average survival and the relationship with CD4 count when initiated). The variations in these factors lead to substantial differences in long-term projections; with universal access by 2010 and no further prevention interventions, between 370 000 and almost 2 million patients could be receiving treatment in 2030-a fivefold difference. Under universal access, by 2010 each doctor will initiate ART for up to two patients every day and the case-load for nurses will at least triple as more patients enter care and start treatment. CONCLUSIONS: The resources required by ART programmes are great and depend on the healthcare systems and the demographic/epidemiological context. This leads to considerable uncertainty in long-term projections and large variation in the resources required in different countries and over time. Understanding how current practices relate to future resource requirements can help optimise ART programmes and inform long-term public health planning.


Assuntos
Fármacos Anti-HIV/administração & dosagem , Fármacos Anti-HIV/economia , Infecções por HIV/diagnóstico , Infecções por HIV/tratamento farmacológico , Instalações de Saúde , Recursos em Saúde/estatística & dados numéricos , Acessibilidade aos Serviços de Saúde/economia , Infecções por HIV/epidemiologia , Humanos , Modelos Teóricos , Análise de Sobrevida , Recursos Humanos , Zimbábue/epidemiologia
12.
Vet Parasitol Reg Stud Reports ; 20: 100389, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32448526

RESUMO

Parasitic diseases are among the major constraints of poultry production. The common internal parasitic infections occurring in poultry include cestodes and other gastrointestinal helminths. The aim of this study was to characterize Raillietina spp. from the gastrointestinal tract of free-range chickens using 18S rDNA genes. This was achieved through the DNA extraction from tapeworms isolated from the gastrointestinal tract of routine slaughtered free-range chickens using 18S and amplifying the partial 18S rDNA genes using PCR. A total of 34 intestine samples were collected from 9 different areas in Matabeleland region and tapeworms were isolated for microscopic examination and morphological characterization. All 34 chickens examined had tapeworms and morphological characterization confirmed those used in the study as belonging to the Raillietina group. DNA extraction was then successfully carried out for 9 cestode isolates followed by the PCR amplification of the 18S genes. The products were sequenced and 4 of the 9 isolates were positively identified using BLAST as Raillietina tunetensis and the other 5 were only identified as Raillietina spp. These sequences were then aligned with other known sequences of Raillietina isolates from GenBank and a phylogenetic tree was constructed using the neighbor-joining method and distance computed using the maximum composite method. The phylogenetic tree showed that three of the unidentified Raillietina species are in the neighboring position with Raillietina sonini whilst the other two are in the neighboring position with Raillietina tetragona. This is the first record of R. tunetensis in Gallus Gallus domesticus from Zimbabwe. This clustering on the phylogenetic tree however, did not differentiate samples according to geographical location showing that this tool can be used to infer phylogenetic data for speciation.


Assuntos
Cestoides/classificação , Infecções por Cestoides/veterinária , Galinhas , Doenças das Aves Domésticas/parasitologia , Animais , Cestoides/genética , Infecções por Cestoides/epidemiologia , Infecções por Cestoides/parasitologia , DNA de Helmintos/análise , DNA Ribossômico/análise , Doenças das Aves Domésticas/epidemiologia , Prevalência , Zimbábue/epidemiologia
13.
Science ; 198(4322): 1166-8, 1977 Dec 16.
Artigo em Inglês | MEDLINE | ID: mdl-270812

RESUMO

Friend leukemia cell chromatin has been fractionated into template active and inactive components. The globin gene sequence is associated with the template active component both prior to and after the cells are induced with dimethyl sulfoxide to synthesize hemoglobin and therefore appears to be in an active configuration in uninduced as well as in induced Friend leukemia cells. In cells which have lost the ability to produce hemoglobin, the globin gene sequence is not associated with the template active fraction of chromatin. These results demonstrate the success of the fractionation procedure.


Assuntos
Cromatina/genética , Genes , Globinas/genética , Leucemia Eritroblástica Aguda/genética , Animais , Linhagem Celular , Cromatina/isolamento & purificação , Desoxirribonucleases/metabolismo , Dimetil Sulfóxido/farmacologia , Eritropoese , Vírus da Leucemia Murina de Friend , Leucemia Experimental/genética , Moldes Genéticos
14.
Vet J ; 179(2): 273-81, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17959398

RESUMO

The objective of the study was to determine monthly variations in serum glucose, cholesterol, total protein (TP), urea, albumin, globulin, albumin/globulin ratio, creatinine, aspartate aminotransferase (AST), creatinine kinase (CK), alkaline phosphatase (ALP), calcium, phosphorus and magnesium in Nguni, Bonsmara and Angus beef steers raised on sweetveld. Twenty-five Nguni, 15 Aberdeen Angus and 15 Bonsmara 8-month old steers were studied from June 2006 until March 2007. Across the 9 months, Nguni had higher concentrations of glucose (P =0.019) and cholesterol (P =0.001) than the other two breeds. The overall glucose and cholesterol concentrations in the Nguni were 4 and 2.86mmol/L, respectively. There was a breedxmonth interaction on glucose, cholesterol, creatinine, calcium, albumin and phosphorus concentrations. Breed had no effect on TP, urea, globulin and AST concentrations. Breed and month differences obtained could be attributed to changes in environment temperature and nutrient content of the forage.


Assuntos
Análise Química do Sangue/veterinária , Cruzamento , Bovinos/sangue , Estações do Ano , Fosfatase Alcalina/sangue , Animais , Aspartato Aminotransferases/sangue , Glicemia/análise , Glicemia/metabolismo , Proteínas Sanguíneas/análise , Cálcio/sangue , Colesterol/análise , Colesterol/sangue , Creatinina/sangue , Magnésio/sangue , Masculino , Fósforo/sangue , Albumina Sérica/metabolismo , Soroglobulinas/metabolismo , Ureia/sangue
15.
Trop Anim Health Prod ; 41(7): 1569-76, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19396566

RESUMO

Ticks feed on blood, are vectors of tick-borne diseases and cause considerable skin damage to livestock. They are commonly controlled using commercial acaricides, which are expensive to the rural farmers, causing them to resort to alternative tick control methods. The objective of this study was to assess the acaricidal properties and safety of some materials (Ptaeroxylon obliquum, Aloe ferox, Lantana camara, Tagetes minuta, Used engine oil and Jeyes fluid, used by rural farmers to control cattle ticks in the Eastern Cape Province, South Africa. A total of 52 cattle were divided into 13 experimental groups with 4 cattle in each. Jeyes fluid at 76.8% concentration and Used engine oil had an efficacy that was almost similar to that of the positive control Ektoban (Cymiazol 17.5 and cypermethrin 2.5%). Extracts of L. camara at 40% concentration had an efficacy of 57% while A. ferox, P. obliquum and T. minuta were not effective. The test materials had no irritation effect on rats. The study revealed that the materials rural farmers use as acaricides vary in their efficacy in controlling ticks.


Assuntos
Doenças dos Bovinos/tratamento farmacológico , Doenças dos Bovinos/parasitologia , Etnofarmacologia/métodos , Preparações de Plantas/uso terapêutico , Controle de Ácaros e Carrapatos/métodos , Infestações por Carrapato/veterinária , Aloe/química , Animais , Bovinos , Desinfetantes/farmacologia , Óleos Combustíveis/análise , Lantana/química , Modelos Lineares , Preparações de Plantas/farmacologia , Plantas Medicinais/química , Ratos , Rutaceae/química , África do Sul , Tagetes/química , Infestações por Carrapato/tratamento farmacológico
16.
Public Health Action ; 9(2): 72-77, 2019 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-31417857

RESUMO

SETTING: A resource-limited urban setting in Zimbabwe with a high burden of tuberculosis (TB) and human immunodeficiency virus (HIV). OBJECTIVES: To determine the feasibility and yield of diabetes mellitus (DM) screening among TB patients in primary health care facilities. DESIGN: A descriptive study. RESULTS: Of the 1617 TB patients registered at 10 pilot facilities, close to two thirds (60%) were male and 798 (49%) were bacteriologically confirmed. The median age was 37 years; two thirds (67%) were co-infected with HIV. A total of 1305 (89%) were screened for DM, and 111 (8.5%, 95% CI 7.0-10.2) were newly diagnosed with DM. Low TB notifying sites were more likely than high TB notifying sites to screen patients using random blood glucose (RBG) (83% vs. 79%; P < 0.04). Screening increased gradually per quarter over the study period. There were, however, notable losses along the screening cascade, the reasons for which will need to be explored in future studies. CONCLUSION: The study findings indicate the feasibility of DM screening among TB patients, with considerable yield of persons newly diagnosed with DM. Scaling up of this intervention will need to address the observed losses along the screening cascade.

17.
Travel Med Infect Dis ; 6(5): 296-300, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18760252

RESUMO

BACKGROUND: Malaria is a risk for travelers to endemic areas. We describe the diagnosis and treatment of malaria in Pretoria, a non-endemic area in South Africa. METHODS: Records of specimens submitted to the medical microbiology laboratory for malaria investigations over 3 years were reviewed with follow up of hospital records for positive specimens for clinical data. The laboratory performs malaria smears and uses HRP2-Ag testing for rapid diagnosis of Plasmodium falciparum. RESULTS: A total of 516 specimens were received, with a 211/516 (41%) malaria smear positive rate. The number of malaria positive specimens has been increasing overtime and this increase was statistically significant in children [p=0.005]. HRP2-Ag testing was done on 430 specimens with124/430 (29%) being positive, of which 10/124 (8%) were smear negative, giving 98% sensitivity. Hospital records for 198/211 (94%) smear positive cases showed that 190/198 (96%) of the patients had a travel history with 170/190 (71%) having traveled to Mozambique, a malaria endemic country. Most patients presented with uncomplicated malaria; the CFR was 4/198 (2%). Treatment mainly followed South African national guidelines. CONCLUSION: Imported malaria is increasingly being diagnosed in returning travelers, especially from Mozambique. Rapid antigen tests remain useful for the diagnosis of malaria in non-endemic areas.


Assuntos
Antimaláricos/uso terapêutico , Malária Falciparum/tratamento farmacológico , Plasmodium falciparum/efeitos dos fármacos , Viagem , Animais , Antígenos de Protozoários/análise , Criança , Fidelidade a Diretrizes , Humanos , Malária Falciparum/diagnóstico , Malária Falciparum/epidemiologia , Malária Falciparum/transmissão , Prontuários Médicos , Moçambique/epidemiologia , Plasmodium falciparum/imunologia , Plasmodium falciparum/isolamento & purificação , Estudos Retrospectivos , Fatores de Risco , África do Sul/epidemiologia
18.
J Prev Alzheimers Dis ; 5(2): 120-133, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29616705

RESUMO

Agitation is a common and burdensome symptom associated with Alzheimer's disease (AD). This is a narrative literature review of the designs and methods used in randomized clinical trials of agitation in patients with AD; sources range from published, to completed but not published, to ongoing studies in the past 10 years. Selection for review included blinded, randomized trials conducted to assess the effect of a pharmacological intervention for which agitation in patients with AD was among the prespecified end points. Key criteria for exclusion included open-label studies, trials of dementia not specific to AD, or mixed populations of AD and unspecified dementia. A search of PubMed and clinicaltrials.gov databases identified 36 trials for which agitation was among the prespecified end points: 18 were published trials and 18 were completed but not published or ongoing. There was significant heterogeneity among AD studies in terms of diagnostic criteria, assessment of severity of disease and agitation, sample size and powering assumptions, treatment duration, patient age and cognitive status, and outcomes measurements. Few studies used a mitigation strategy for placebo response. Accumulating evidence suggests that it is important to consider the following in trial design: thresholds for baseline severity of agitation and AD; use of prespecified accepted criteria to define agitation; and use of standardized, validated tools to measure treatment effects during a trial. Adoption of these design strategies might help improve signal detection and bring us closer to identifying the most appropriate, effective, and safe treatments for agitation in patients with AD.


Assuntos
Doença de Alzheimer/tratamento farmacológico , Agitação Psicomotora/tratamento farmacológico , Ensaios Clínicos Controlados Aleatórios como Assunto/métodos , Doença de Alzheimer/complicações , Humanos , Agitação Psicomotora/complicações
19.
Nat Biotechnol ; 15(2): 174-7, 1997 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-9035145

RESUMO

The ability of plants to metabolize the xenobiotic nitrate ester, glycerol trinitrate (GTN, nitroglycerin), was examined using cultured plant cells and plant cell extracts. Intact cells rapidly degrade GTN with the initial formation of glycerol dinitrate (GDN) and the later formation of glycerol mononitrate (GMN). A material balance analysis of these intermediates indicates little, if any, formation of reduced, conjugated or cell-bound carbonaceous metabolites. Cell extracts were shown to be capable of degrading GTN with the simultaneous formation of GDN in stoichiometric amounts. The intermediates observed, and the timing of their appearance, are consistent with a sequential denitration pathway that has been reported for the microbial degradation of nitrate esters. The degradative activities of plant cells are only tenfold less than those reported for bacterial GTN degradation. These results suggests that plants may serve a direct degradative function for the phytoremediation of sites contaminated by organic nitrate esters.


Assuntos
Biodegradação Ambiental , Poluentes Ambientais , Nitroglicerina/metabolismo , Plantas/metabolismo , Xenobióticos/metabolismo , Células Cultivadas , Cinética
20.
Bioresour Technol ; 98(4): 840-4, 2007 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-16697181

RESUMO

Glutaraldehyde (GA) crosslinked gelatin (G) microcapsules containing Zanthoxylum limonella oil (ZLO) were prepared by coacervation technique. The effect of various parameters such as variation of oil-loading, gelatin concentration and degree of crosslinking on release rate of oil were studied. Scanning electron microscopy (SEM) was used to understand the surface characteristics of microcapsules. FTIR-results indicated the absence of any significant interaction between polymer and oil.


Assuntos
Culicidae , Gelatina/química , Glutaral/química , Repelentes de Insetos , Óleos Voláteis/química , Animais , Composição de Medicamentos , Microscopia Eletrônica de Varredura , Espectroscopia de Infravermelho com Transformada de Fourier
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