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1.
Kathmandu Univ Med J (KUMJ) ; 20(78): 128-135, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-37017154

RESUMO

Background There is an age-old notion that family planning is women's responsibility disregarding the fact that men have equal responsibility in fertility regulation. Although male involvement is getting more recognition, studies on men's role in family planning are very few in the number in this part of the world. Objective To assess the knowledge, attitude and level of male involvement in family planning and to find out the factors associated with male involvement by contraceptive usage. Method A community based cross-sectional study was done from May to July 2021 among 165 currently married male, who had at least one child, living in Singur district of West Bengal. Cluster sampling method was done to select study participants and data were collected by pre-designed pretested questionnaire. Descriptive statistics, multivariable logistic regression was applied and data were analysed applying SPSS software. Result Only 36.4% participants were directly involved in family planning either by using condom or by withdrawal method but 65.5% participants were indirectly involved in family planning through spousal communication either by approving contraceptive use to their spouse or by decision making regarding family planning. Moreover, barrier of contraceptives usage were side effect (27%) and fear of impotence (25.5%). Male involvement was significantly associated with participant's education [AOR (95% CI= 3.63 (1.45-9.05)], caste [AOR (95% CI= 7.06 (2.55-19.51)], number of living children [AOR (95%CI= 5.01(1.95-12.87)], desire for more child [AOR (95% CI=0.34 (.13-.87)] and attitude on family planning [AOR (95% CI= 3.55 (1.41-8.94)]. Conclusion This study identified the prevailing gender norms in rural areas. Advocacy for male involvement in family planning by health personnel during counselling of eligible couples should help in increasing contraceptive coverage in the long run.


Assuntos
Serviços de Planejamento Familiar , Conhecimentos, Atitudes e Prática em Saúde , Criança , Humanos , Masculino , Feminino , Estudos Transversais , Casamento , Anticoncepcionais , Comportamento Contraceptivo
2.
Soft Matter ; 17(33): 7628-7644, 2021 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-34318861

RESUMO

Liquid marbles refer to droplets that are covered with a layer of non-wetting particles. They are observed in nature and have practical significance. These squishy objects bounce, coalesce, break, inflate, and deflate while the liquid does not touch the substrate underneath. Despite the considerable cross-disciplinary interest and value of the research on liquid marbles, a unified framework for describing the mechanics of deflating liquid marbles-as the liquid evaporates-is unavailable. For instance, analytical approaches for modeling the evaporation of liquid marbles exploit empirical parameters that are not based on liquid-particle and particle-particle interactions. Here, we have combined complementary experiments and theory to fill this gap. To unentangle the contributions of particle size, roughness, friction, and chemical make-up, we investigated the evaporation of liquid marbles formed with particles of sizes varying over 7 nm-300 µm and chemical compositions ranging from hydrophilic to superhydrophobic. We demonstrate that the potential final states of evaporating liquid marbles are characterized by one of the following: (I) constant surface area, (II) particle ejection, or (III) multilayering. Based on these insights, we developed an evaporation model for liquid marbles that takes into account their time-dependent shape evolution. The model fits are in excellent agreement with our experimental results. Furthermore, this model and the general framework can provide mechanistic insights into extant literature on the evaporation of liquid marbles. Altogether, these findings advance our fundamental understanding of liquid marbles and should contribute to the rational development of technologies.

3.
Fish Shellfish Immunol ; 119: 31-41, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34487828

RESUMO

The present study focuses on the immunity and growth of Penaeus indicus fed with varying protein levels (25%, 30%, and 35%) in a biofloc based rearing system. A 120 days growth trial was carried out using juvenile Penaeus indicus (0.71 ± 0.01) with dietary protein level, 25% (LP), 30% (MP), and 35% (HP), and a control diet-fed with 35% acted as control group resulting in 4 treatments each with four replicates and were randomly assigned 16 tank units (7500 L each). A combination of different carbon sources (molasses, wheat flour, and rice bran in 2:1:1 ratio), yeast and a probiotic (Bacillus sp.) consortium were used for the development of biofloc. At the end of the trial, the growth parameters of shrimps viz., initial weight, feed conversion ratio (FCR), and daily growth coefficient (DGC) were computed. The results indicated that shrimp fed with medium (30%) protein (MP) diet recorded significantly (P < 0.05) improved growth performance compared to high protein fed group (35%) and low protein (25%) fed group (LP) in a biofloc system and control group (35%). The immunological parameters such as hemagglutination activity (HA) assay, serum protein, lysozyme, phenol oxidase (PO), and inhibition of superoxide dismutase (SOD) activity were observed in serum, plasma, and hemocyte lysate supernatant (HLS). The HA activity, PO activity in plasma was found to be higher in high protein fed animals, whereas medium protein resulted in enhanced PO activity in serum. Similarly, lysozyme and SOD were inhibited well in high protein fed animals compared to the low protein fed group. The vital immune genes's mRNA profiling showed a potential rise in the expressional pattern in MP and HP treatments compared to LP and control. BGBP (beta-1,3-glucan binding protein) and hemocyanin mRNA transcript levels were highly upregulated in the HP (5 fold) and moderately expressed in MP (2 fold) and LP (1-2 fold). The transcripts of peroxinectin, antimicrobial peptides like crustin showed significant upregulation in HP followed by in MP and LP and control. Likewise, other immune genes, such as SOD, prophenoloxidase (proPO), showed a similar trend in a marginal way, indicating immunomodulation in the biofloc groups. This study suggested that biofloc with high protein (35%) supplementation can substantially enhance the immune response of shrimps, although medium protein level (30%) is optimum for improving the survival, growth, and in turn economic return in Indian white shrimp.


Assuntos
Penaeidae , Ração Animal/análise , Animais , Peptídeos Antimicrobianos , Aquicultura , Dieta/veterinária , Suplementos Nutricionais , Farinha , Imunidade , Imunidade Inata , Muramidase , Penaeidae/genética , RNA Mensageiro , Superóxido Dismutase , Triticum
4.
J Appl Microbiol ; 130(3): 786-796, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32615006

RESUMO

AIMS: The emergence of multidrug resistant strains of Mycobacterium tuberculosis has made tuberculosis more difficult to manage clinically. With the aim of obtaining new and effective anti-mycobacterial agent(s), this study investigated the anti-mycobacterial activity of several imidazole and piperidine derivatives. METHODS AND RESULTS: Towards obtaining new anti-mycobacterial agents, Mycobacterium smegmatis cells were treated with different compounds for their growth inhibitory activity. Among these, benzyl 1H-imidazole-1-carbodithioate and allyl piperidine-1-carbodiothioate exhibited better inhibition than the others. Thereafter, anti-biofilm property of these two was examined by treating M. smegmatis with these agents before and after the formation of biofilm. The result showed that both the compounds at their sublethal dose inhibited the formation of biofilm as well as dispersed preformed biofilm. Consistently, they augmented the activity of isoniazid or rifampicin against biofilm-encapsulated cells. MTT assay was performed to examine the toxic effects of this combinatorial therapy on different cell lines. Results exhibited a low cytotoxicity for this combinatorial treatment. The activity of these two was also verified against dormant mycobacterial cells and was found to be effective. CONCLUSION: The present study identified two compounds that exhibited anti-mycobacterial activities against both planktonic and dormant cells. These two also exhibited anti-biofilm activity at their sublethal dose and augmented the activity of isoniazid and rifampicin against biofilm encapsulated cells. SIGNIFICANCE AND IMPACT OF THE STUDY: The current study provides two new agents that have the potential to be used in anti-mycobacterial therapy and may help in public health management.


Assuntos
Antibacterianos/farmacologia , Imidazóis/farmacologia , Mycobacterium smegmatis/efeitos dos fármacos , Piperidinas/farmacologia , Biofilmes/efeitos dos fármacos , Biofilmes/crescimento & desenvolvimento , Humanos , Testes de Sensibilidade Microbiana , Rifampina/farmacologia
5.
Clin Exp Dermatol ; 46(4): 795-799, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33625737

RESUMO

A 5-year-old boy presented with generalized cutaneous erosions, severe scarring, depigmentation and contractures affecting major joints. The lesions had initially affected his ears, nose, feet, and the genital and ocular mucosa, leading to significant depigmentation, scarring, contractures and mutilation. The whole of the trunk and limbs were involved at the time of presentation, with the exception of some islands of spared skin on the proximal thighs, legs, nipples and external genitalia. Electron microscopy revealed a split in the sublamina densa with the absence of anchoring fibrils, suggestive of dystrophic epidermolysis bullosa (EB). Immunofluorescence antigen mapping demonstrated a broad reticulate pattern of staining with collagen IV, VII, and laminin 332 in the floor of the blister, suggestive of Kindler syndrome. Next-generation sequencing revealed a de novo heterozygous missense mutation (a variant of unknown significance) in exon 22 of the phospholipase-C gamma 2 gene (PLCG2), which resulted in a substitution of serine by asparagine at codon 798 (p.Asp798Ser), a result that was validated using Sanger sequencing. The child was diagnosed with PLCG2-associated antibody deficiency and immune dysregulation (PLAID)/autoinflammation and PLCG2-associated antibody deficiency and immune dysregulation (APLAID) syndrome. The cutaneous and corneal erosions, inflammation and scarring of this magnitude, and the eventual result of death have not been described previously for the PLAID/APLAID spectrum previously. In conclusion, this was an unusual acquired autoinflammatory severe EB-like disease that may be associated with de novo PLCG2 mutation.


Assuntos
Epidermólise Bolhosa/genética , Mutação de Sentido Incorreto , Fosfolipase C gama/genética , Vesícula/genética , Pré-Escolar , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Masculino , Microscopia Eletrônica , Doenças Periodontais/genética , Fenótipo , Transtornos de Fotossensibilidade/genética , Pele/patologia
6.
Langmuir ; 36(1): 328-339, 2020 01 14.
Artigo em Inglês | MEDLINE | ID: mdl-31826620

RESUMO

There are great efforts of synthesizing imidazolium-based ionic liquids (ILs) for developing new antibiotics as these molecules have shown strong antibacterial activities. Compared to a single-hydrocarbon-chained IL, the lipid analogues (LAs) with two chains are more effective. In the present study, the LA molecule MeIm(COOH)Me(Oleylamine)Iodide has been synthesized and its surface activities along with the effectiveness in restructuring of a model cellular membrane have been quantified. The molecule is found to be highly surface active as estimated from the area-pressure isotherm of a monolayer of the molecules formed at the air-water interface. The X-ray reflectivity (XRR) studies of a monolayer dip-coated on a hydrophilic substrate have shown the structural properties of the layer which resembles to those of unsaturated phospholipids. The LA molecules are observed to fluidize a phospholipid bilayer formed by the saturated lipid 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC). At a lower surface pressure, the lipid monolayer of DPPC has exhibited a thickening effect at a low concentration of added LA and a thinning effect at higher concentration. However, at a high surface pressure of the monolayer, the thickness is found to decrease monotonically. The in-plane pressure-dependent interaction of LA molecules with model cellular membrane and the corresponding perturbation in the structure and physical properties of the membrane may be linked to the strong lysing effect of these types of molecules.


Assuntos
1,2-Dipalmitoilfosfatidilcolina/análogos & derivados , Imidazóis/química , Líquidos Iônicos/química , Temperatura , 1,2-Dipalmitoilfosfatidilcolina/síntese química , 1,2-Dipalmitoilfosfatidilcolina/química , Imidazóis/síntese química , Líquidos Iônicos/síntese química , Estrutura Molecular , Propriedades de Superfície
7.
Fish Shellfish Immunol ; 98: 477-487, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31945485

RESUMO

Effect of bio-augmentation of Bacillus spp in biofloc on growth, survival and immunity in Indian white shrimp Penaeus indicus was evaluated. Nine Bacillus strains were isolated and screened individually as well as in the form of a consortia. To maintain a C:N ratio of 12:1 a blend of carbohydrate sources was used. Bio-augmentation with bacterial consortium and Virgibacillus sp. produced improved growth and immunity. Shrimp survival ranged from 80 to 95% among treatments. Production was higher (35%) in the biofloc tanks with an average body weight (ABW) of 10.89 ± 1.2 g. On evaluating the immune responses, it was found that trypsin significantly (P < 0.05) enhanced Prophenoloxidase (PO) activity in Lysinibacillus, Bacillus cereus, Bacillus licheniformis and Bacillus subtilis bio-augmented groups. Laminarin induced PO activity was observed in groups supplemented with Oceanobacillus sp., Bacillus sp.and Bacillus megaterium. The lysozyme (LZ) activity was significantly (P < 0.05) higher in B. cereus and Microbial Consortia (MC), while other treatments were less effective. Total hemocyte count (THC) significantly (P < 0.05) increased in all treatment groups compared to the control. Hyaline hemocyte (HH) count was significantly (P < 0.05) higher in the control group (14.43%). Semi granular hemocytes (SGH) was higher in groups treated with Lysinibacillus, Bacillus sp., B. licheniformis and B. subtilis. The granular hemocyte (GH) count was significantly (P < 0.05) higher in Virgibacillus sp., B. cereus, B.megaterium and Oceanobacillus sp. The biofloc alone (BF), treated and augmented with B. megaterium significantly (P < 0.05) increased phagocytic activity. Highly significant phagocytic index (PI) was observed in bio-augmented groups, BF and MC. The relative expression levels of immune genes were found to be significantly up-regulated in shrimps grown in bio-augmented groups. Enhanced immunological parameters implies that bio-augmentation of biofloc with Bacillus spp. improved immunity in shrimps. Hence, bio-augmentation of probiotics in biofloc may be useful in improving culture conditions to produce P. indicus.


Assuntos
Aquicultura/métodos , Bactérias/classificação , Penaeidae/fisiologia , Criação de Animais Domésticos , Animais , Penaeidae/imunologia , Organismos Livres de Patógenos Específicos
8.
J Appl Microbiol ; 127(3): 825-844, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31216598

RESUMO

AIM: Tea (Camellia sinensis (L.) O. Kuntze) is an economically important caffeine-containing beverage crop with massive plantation in the Northeast corner of the agroclimatic belt of India. The main aim of the work was to isolate, identify and characterize the native plant growth promoting endophytes associated with tea for future microbe based bioformulation. METHODS AND RESULTS: A total of 129 endophytic bacteria were isolated and characterized for plant growth promoting traits such as indole-3-acetic acid (IAA), phosphate solubilization, ammonia production, biocontrol traits like siderophore and extracellular enzyme production. BOX-PCR fingerprinting was used to differentiate the various bacterial isolates obtained from six different tea species. 16S rRNA sequencing and blast analysis showed that these isolates belonged to different genera, that is, Bacillus, Brevibacterium, Paenibacillus and Lysinibacillus. Lysinibacillus sp. S24 showed the highest phosphate solubilization and IAA acid production efficiency of 268·4 ± 14·3 and 13·5 ± 0·5 µg ml-1 , respectively. Brevibacterium sp. S91 showed the highest ammonia production of 6·2 ± 0·5 µmol ml-1 . Chitinase, cellulase, protease and pectinase activities were shown by 4·6, 34·1, 27·13 and 13·14% of the total isolates, respectively. Similarly, 41% of the total isolates were positive for 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity. Further, the potent PGP isolates, S24 and S91 were able to enhance the vegetative parameters such as dry/fresh weight of root and shoot of tea plants in nursery conditions. CONCLUSION: Our findings corroborate that tea endophytic bacteria possess the potential to demonstrate multiple PGP traits both, in vivo and in vitro and have the potential for further large-scale trials. SIGNIFICANCE AND IMPACT OF THE STUDY: The exploration of tea endophytic bacterial community is suitable for the development of bioformulations for an integrated nutrient management and thus sustainable crop production and decreasing the hazardous effects of chemical fertilizers on the environment and human health.


Assuntos
Camellia sinensis/microbiologia , Endófitos/fisiologia , Desenvolvimento Vegetal , Aminoácidos Cíclicos , Bacillus/genética , Bacillus/isolamento & purificação , Bacillus/metabolismo , Brevibacterium/genética , Brevibacterium/isolamento & purificação , Brevibacterium/metabolismo , Camellia sinensis/crescimento & desenvolvimento , Endófitos/isolamento & purificação , Índia , Ácidos Indolacéticos/metabolismo , Paenibacillus/genética , Paenibacillus/isolamento & purificação , Paenibacillus/fisiologia , Filogenia , Raízes de Plantas/microbiologia , RNA Ribossômico 16S/genética , Sideróforos/metabolismo
10.
Subst Use Misuse ; 54(14): 2304-2316, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31386599

RESUMO

Background: Within India's military medical framework, alcohol dependence syndrome (ADS) is deemed a treatable medical illness incompatible with military service, and complete abstinence is the only acceptable successful treatment outcome. Objective: This study was designed to identify factors which were able to differentiate treatment outcomes of abstinence and relapse among ADS patients in a military framework. Method: Recognizing personal incentives to misrepresent alcohol consumption, abstinence, and relapse outcomes were established using official reports from a patient's parent unit, in combination with biochemical parameters and clinical examination. Patients serially admitted for ADS treatment or follow-up review were surveyed, and their socio-demographic and alcohol consumption profiles, coping styles, life events and specific relapse precipitants were recorded and compared as contributory variables in a cognitive-behavioral model of ADS. From this survey of 140 patients, membership to abstainer or relapser groups was then predicted using a discriminant analysis. Results: 34% of patients achieved early absolute abstinence. No baseline socio-demographic or drinking profile distinctions existed between abstainers and relapsers. Differences were forthcoming on coping styles, life-event, and relapse-precipitant exposure measures. Stepwise discriminant analysis produced a final equation comprising 10 independent variables (including two positive life event measures), which predicted an abstinence/relapse outcome with an 86% and 79% hit-rate (original and cross-validated). Conclusion: Using prevailing cognitive-behavioral constructs, early absolute abstinence emerged as an actionable objective and an achievable goal without any contributory socio-demographic predilections. This preliminary evaluation suggests it is a tenable and realistic target of current ADS treatment programs.


Assuntos
Adaptação Psicológica/fisiologia , Abstinência de Álcool/psicologia , Alcoolismo/terapia , Adulto , Alcoolismo/psicologia , Objetivos , Humanos , Índia , Masculino , Pessoa de Meia-Idade , Militares , Recidiva , Estudos Retrospectivos , Resultado do Tratamento
11.
Indian J Microbiol ; 59(4): 525-529, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31762517

RESUMO

Microsporidia are intracellular fungal parasites and they are the most common pathogens for sericulture. Microsporidian sp. can cause pebrine, a dreadful disease and lead to destructive disorder in Muga silkworm, Antheraea assamensis Helfer by vertical and horizontal transmission. This disease is the key factor obstructing the developmental progress of Muga culture in India. Nevertheless, molecular identification and characterization of pathogen associated with pebrine disease in A. assamensis is not yet established. Insect bioassay studies revealed that microsporidian infection in Muga silkworm, A. assamensis Helfer significantly reduced (P < 0.005) cocoon weight, pupal weight, shell weight and silk ratios. A new set of PCR primers suitable for amplification of small subunit ribosomal RNA (SSU-rRNA) of microsporidia infecting A. assamensis have been designed. The amplicon was cloned, sequenced and analysed. Microsporidia pathogen of wild silk moth A. assamensis has been identified at genus level as Nosema sp. AA1. Phylogeny of Nosema sp. AA1 was constructed on the basis of SSU-rRNA sequence and it has a close evolutionary relationship with microsporidian pathogens of other wild silkmoths. The arrangement and organization of the rRNA genes inferred that Nosema sp. AA1 belongs to true Nosema group and not to members of the Nosema/Vairimorpha group.

12.
Neurol Neurochir Pol ; 52(6): 704-709, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30274945

RESUMO

AIM: To study the prevalence of psychiatric comorbidities in patients of multiple sclerosis and their association to the degree of disability. METHOD: Psychiatric symptoms were assessed in 90 patients of multiple sclerosis using GHQ-12, MMSE, HADS, Beck Depression Inventory and AUDIT. Neurological disability was assessed using Expanded Disability Status Scale. Correlations were determined between EDSS scores and psychiatric scale scores. RESULT: 61% of patients had significant psychological distress. Depression was most common (38.8%) which was followed by anxiety symptoms (27.8%). Cognitive functioning was relatively intact in patients with mild to moderate neurological disability. Alcohol abuse was mostly restricted to male gender. CONCLUSION: Psychiatric illness is highly prevalent in patients of multiple sclerosis leading to poor quality of life and significant distress. Psychiatric disability was higher in patients who had greater deterioration in neurological function. All cases of MS should be assessed for psychiatric morbidities as can be alleviated by appropriate intervention.


Assuntos
Esclerose Múltipla , Comorbidade , Depressão , Avaliação da Deficiência , Humanos , Masculino , Escalas de Graduação Psiquiátrica , Qualidade de Vida
13.
Langmuir ; 33(48): 13899-13901, 2017 12 05.
Artigo em Inglês | MEDLINE | ID: mdl-29129080

RESUMO

Extrand's interpretation in his "Comment on "Solid-Liquid Work of Adhesion" by Tadmor and Coworkers" may lead to an important discussion and physical understanding of the problem. Below, we compare the two approaches and elucidate the differences to put them in the right perspective.

14.
Epidemiol Infect ; 145(5): 1018-1024, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-28029092

RESUMO

Urinary tract infection (UTI) is common in children aged <5 years with diarrhoea, but little is known about risk factors, aetiology and outcome of such children. We aimed to evaluate these knowledge gaps of UTI in children aged <5 years with diarrhoea. We enrolled all children aged <5 years with diarrhoea admitted to Dhaka Hospital of the International Centre for Diarrhoeal Disease Research, Bangladesh, between May 2011 and April 2013, who had history of fever (⩾38 °C) and obtained a urine sample for culture. Diarrhoea with UTI (confirmed by culture) constituted cases (n = 26) and those without UTI constituted controls (n = 78). Threefold controls were randomly selected. The case-fatality rate was comparable in cases and controls (4% vs. 1%, P = 0·439). Escherichia coli (69%) and Klebsiella (15%) were the most commonly isolated pathogens. Persistent diarrhoea, pneumonia and prior antibiotics use were identified as risk factors for UTI in logistic regression analysis (P < 0·05 for all). Thus, children with diarrhoea presenting with persistent diarrhoea, pneumonia, and prior antibiotic use should be investigated for UTI for their prompt management that may reduce morbidity.


Assuntos
Bactérias/isolamento & purificação , Infecções Bacterianas/epidemiologia , Diarreia/complicações , Hospitalização , Infecções Urinárias/epidemiologia , Bactérias/classificação , Infecções Bacterianas/microbiologia , Infecções Bacterianas/mortalidade , Bangladesh/epidemiologia , Pré-Escolar , Diarreia/patologia , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Mortalidade , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Infecções Urinárias/microbiologia , Infecções Urinárias/mortalidade
15.
Nutr Metab Cardiovasc Dis ; 27(1): 32-40, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27612985

RESUMO

Cardiovascular disease (CVD) is one of the main causes of mortality and morbidity worldwide. As an emerging population, South Asians (SAs) bear a disproportionately high burden of CVD relative to underlying classical risk factors, partly attributable to a greater prevalence of insulin resistance and diabetes and distinct genetic and epigenetic influences. While the phenotypic distinctions between SAs and other ethnicities in CVD risk are becoming increasingly clear, the biology of these conditions remains an area of active investigation, with emerging studies involving metabolism, genetic variation and epigenetic modifiers (e.g., extracellular RNA). In this review, we describe the current literature on prevalence, prognosis and CVD risk in SAs, and provide a landscape of translational research in this field toward ameliorating CVD risk in SAs.


Assuntos
Povo Asiático , Doenças Cardiovasculares/etnologia , Síndrome Metabólica/etnologia , Crescimento Demográfico , Ásia/epidemiologia , Povo Asiático/genética , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/genética , Emigrantes e Imigrantes , Emigração e Imigração , Epigênese Genética , Predisposição Genética para Doença , Disparidades nos Níveis de Saúde , Humanos , Síndrome Metabólica/diagnóstico , Síndrome Metabólica/genética , Obesidade/etnologia , Fenótipo , Prevalência , Medição de Risco , Fatores de Risco
16.
Med J Armed Forces India ; 73(4): 370-374, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29386712

RESUMO

BACKGROUND: It is well known that environmental factors play an important role in human performance. High temperature and humidity particularly impair mental performance by altering brain neurochemistry and electrolyte disturbance which in turn affect one's overall efficiency. While the physiological responses to environmental heat have been well established, it is less clear about its impact on cognition. Study aims to investigate the impact of thermal strain on cognition. METHODS: One hundred (100) healthy soldiers aged between 20 and 30 years who had spent minimum of one year in desert conditions prior to their induction in the study formed sample of the study. The subjects were evaluated on memory and on cognitive functions twice i.e. in the month of February and June. The data so generated was analyzed by appropriate statistical methods. RESULTS: The mean age of the subjects were 25.8 yrs. There was a significant decline in cognitive performance in hot climate as compared to normal weather on Post graduate Institute (PGI) memory scale (P < 0.05). The effect was more marked for tests requiring sustained attention, concentration, psychomotor performance, verbal memory and tests of executive function. CONCLUSION: The present study is the first study to be conducted in actual desert conditions. Findings revealed a detrimental impact of thermal stress on the cognitive performance of soldiers in deserts.

17.
Psychol Med ; 46(8): 1749-59, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26937942

RESUMO

BACKGROUND: Post-traumatic stress disorder (PTSD) involves maladaptive long-term memory formation which underlies involuntary intrusive thoughts about the trauma. Preventing the development of such maladaptive memory is a key aim in preventing the development of PTSD. We examined whether the N-methyl d-aspartate receptor (NMDAR) antagonist gas nitrous oxide (N2O) could reduce the frequency of intrusive memories by inhibiting NMDAR-dependent memory consolidation in a laboratory analogue of psychological trauma. METHOD: Participants were randomized to inhale N2O (N = 25) or medical air (N = 25) after viewing a negatively valenced emotional film clip ('trauma film'). Participants subsequently completed a daily diary assessing frequency of intrusive thoughts relating to the film clip. A week later, participants completed an explicit memory recall task related to the film. RESULTS: Post-encoding N2O sped the reduction in intrusive memory frequency, with a significant reduction by the next day in the N2O group compared to 4 days later in the air group. N2O also interacted with post-film dissociation, producing increased intrusion frequency in those who were highly dissociated at baseline. Sleep length and quality the night after viewing the film did not differ between the groups. CONCLUSION: N2O speeds the reduction of intrusive analogue trauma memory in a time-dependent manner, consistent with sleep-dependent long-term consolidation disruption. Further research with this drug is warranted to determine its potential to inoculate against enduring effects of psychological trauma; however, caution is also urged in dissociated individuals where N2O may aggravate PTSD-like symptomatology.


Assuntos
Analgésicos não Narcóticos/farmacologia , Consolidação da Memória/efeitos dos fármacos , Óxido Nitroso/farmacologia , Trauma Psicológico/psicologia , Adolescente , Adulto , Feminino , Frequência Cardíaca , Humanos , Masculino , Memória/efeitos dos fármacos , Rememoração Mental/efeitos dos fármacos , Modelos Teóricos , Trauma Psicológico/fisiopatologia , Sono , Transtornos de Estresse Pós-Traumáticos/psicologia , Adulto Jovem
18.
Int J Legal Med ; 130(4): 985-994, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26156450

RESUMO

Few studies have examined the biomechanical basis for backspatter from cranial gunshot wounds. Backspatter is material which travels against the direction of fire following ejection from a gunshot entrance wound. Our paper focuses on the use of animals for reconstructing this phenomenon. Five live pigs and several slaughtered pigs were shot using either 9 × 19 mm, 115 grain, full metal jacketed ammunition or .22 long rifle, 40 grain, lead, round-nose ammunition. A high-speed camera was used to record the entrance wound formation and backspatter. A small amount of backspattered material was produced with all targets, and blood backspatter was seen in a few cases. However, we conclude that our model provides an understanding of the phenomenon of backspatter and the physical mechanisms associated with it. The various components of the mechanism of backspatter formation are complex and overlap. The principle mechanism observed in pig cranial gunshots was the high-speed impact response of the skin overlying the skull bone. This study has also produced evidence supporting the view that backspatter can result from the splashing of superficial blood if it is already present on the skin. Subcutaneous gas effects have been demonstrated for backspatter from contact shots. There has been no clear evidence of the role of the collapse of a temporary cavity within the brain.


Assuntos
Manchas de Sangue , Balística Forense , Traumatismos Cranianos Penetrantes/patologia , Ferimentos por Arma de Fogo/patologia , Animais , Armas de Fogo , Modelos Animais , Suínos
19.
Matern Child Health J ; 20(8): 1680-7, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27000849

RESUMO

Objective To evaluate the role DNA methylation may play in genes associated with preterm birth for higher rates of preterm births in African-American women. Methods Fetal cord blood samples from births collected at delivery and maternal demographic and medical information were used in a cross-sectional study to examine fetal DNA methylation of genes implicated in preterm birth among black and non-black infants. Allele-specific DNA methylation analysis was performed using a methylation bead array. Targeted maximum likelihood estimation was applied to examine the relationship between race and fetal DNA methylation of candidate preterm birth genes. Receiver-operating characteristic analyses were then conducted to validate the CpG site methylation marker within the two racial groups. Bootstrapping, a method of validation and replication, was employed. Results 42 CpG sites were screened within 20 candidate gene variants reported consistently in the literature as being associated with preterm birth. Of these, three CpG sites on TNFAIP8 and PON1 genes (corresponding to: cg23917399; cg07086380; and cg07404485, respectively) were significantly differentially methylated between black and non-black individuals. The three CpG sites showed lower methylation status among infants of black women. Bootstrapping validated and replicated results. Conclusion for Practice Our study identified significant differences in levels of methylation on specific genes between black and non-black individuals. Understanding the genetic/epigenetic mechanisms that lead to preterm birth may lead to enhanced prevention strategies to reduce morbidity and mortality by eventually providing a means to identify individuals with a genetic predisposition to preterm labor.


Assuntos
Proteínas Reguladoras de Apoptose/genética , Arildialquilfosfatase/genética , Negro ou Afro-Americano/genética , Ilhas de CpG/genética , Metilação de DNA/genética , Nascimento Prematuro/genética , Estudos Transversais , DNA/sangue , DNA/genética , Epigênese Genética , Feminino , Sangue Fetal/metabolismo , Humanos , Funções Verossimilhança , Trabalho de Parto Prematuro , Gravidez , Nascimento Prematuro/etnologia , Curva ROC , População Branca/genética , Adulto Jovem
20.
J Postgrad Med ; 62(1): 40-3, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26515990

RESUMO

The disorders of large granular lymphocytes include reactive proliferation as well as indolent or aggressive neoplasms of cytotoxic T cells, γδ T cells, and natural killer (NK) cells. They are associated with autoimmune and infectious disorders and have varied immunophenotypic features. We report a case, which highlights this complex association of autoimmune and infectious diseases with large granular lymphocytosis, the overlapping spectrum of large granular lymphocyte leukemias, and γδ T cell lymphomas as well as the difficulties in the diagnosis and management of these indolent T cell lymphomas in the usual clinical settings.


Assuntos
Doença Celíaca/complicações , Hepatite B Crônica/complicações , Leucemia Linfocítica Granular Grande/complicações , Aplasia Pura de Série Vermelha/complicações , Linfócitos T/patologia , Biópsia , Humanos , Leucemia Linfocítica Granular Grande/patologia , Linfocitose , Masculino , Pessoa de Meia-Idade
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