RESUMO
Previous research suggests that conservatives (right-wingers) tend to show more negativity bias than liberals (left-wingers) in several tasks. However, the majority of these studies are based on correlational findings and do not provide information on the cognitive underpinnings of this tendency. The current research investigated whether intuition promotes negativity bias and mitigates the ideological asymmetry in this domain in three underrepresented, non-western samples (Turkey). In line with the previous literature, we defined negativity bias as the tendency to interpret ambiguous faces as threatening. The results of the lab experiment revealed that negativity bias increases under high-cognitive load overall. In addition, this effect was moderated by the participants' political orientation (Experiment 1). In other words, when their cognitive resources were depleted, liberals became more like conservatives in terms of negativity bias. However, we failed to conceptually replicate this effect using time-limit manipulations in two online preregistered experiments during the COVID-19 pandemic, where the baseline negativity bias is thought to be already at peak. Thus, the findings provide no strong evidence for the idea that intuition promotes negativity bias and that liberals use cognitive effort to avoid this perceptual bias.
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A significant number of paediatric surgical patients undergone clean surgical procedures. Most of the paediatric surgeon use perioperative prophylactic antibiotic in this clean procedure because of undue fear of infection in their mind. The objective of this study is to evaluate whether the use of perioperative prophylactic antibiotics have an effect to prevent post operative wound infection in clean operation in paediatric surgical patients. This study was conducted in the paediatric surgery department of Bangabandhu Sheikh Mujib Medical University and some private clinics of Dhaka city from January 2009 to December 2009. Two hundred patients who were undergone clean elective surgical procedure on day case basis were included in this study. They were divided into two equal groups (Group A and Group B). The patients of Group A were given intransverse Cephradine 30 minutes before incision and then oral Cephradine was advised postoperatively for 7 days. The patients of Group B were not given any perioperative antibiotic. All the patients of both groups were advised to come on 3rd, 6th and 10th postoperative day for examination of wound. In Group A (With chemo prophylaxis), five patients (5%) developed postoperative wound infection and in Group B (without chemo prophylaxis), three patients (3%) developed postoperative wound infection. Thus the rate of postoperative wound infection is slightly more in patients with chemo prophylaxis but it was not statistically significant by chi-square test. Based on the result of this study, it may be concluded that the antibiotic prophylaxis is not necessary in clean surgery in paediatric age group.
Assuntos
Antibioticoprofilaxia/estatística & dados numéricos , Procedimentos Cirúrgicos Operatórios , Infecção da Ferida Cirúrgica/prevenção & controle , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Infecção da Ferida Cirúrgica/microbiologiaRESUMO
Congenital bladder diverticula (CBD) are unusual but not rare in childhood. Report of acute urinary retention due to congenital bladder diverticula are rarely found in the literature. Here we report a case of congenital bladder diverticulum with acute urinary retention in a ten months old male infant. Urinary tract infection and urinary retention are the most frequent presentation forms. In this case CBD produce urinary obstruction as a result of compression of the urethra which causes urinary retention. Voiding cystourethrogram revealed a large bladder diverticulum. Bladder diverticulum should be a differential diagnosis in male children, presenting with urinary retention, fever and an abdominal mass. Ultrasonography, voiding cystourethrogram & cystoscopy confirm the diagnosis and diverticulectomy was successfully done for the child.
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Divertículo/complicações , Doenças da Bexiga Urinária/complicações , Retenção Urinária/etiologia , Divertículo/congênito , Divertículo/diagnóstico , Divertículo/cirurgia , Humanos , Lactente , Masculino , Doenças da Bexiga Urinária/congênito , Doenças da Bexiga Urinária/diagnóstico , Doenças da Bexiga Urinária/cirurgiaRESUMO
The present study aimed to determine acrylamide traces in180 heat-treated carbohydrate-rich foods through gas chromatography coupled to mass spectrometry (GC-MS/MS) in Bangladesh. Detected acrylamide contents were 730 ± 293 µg/kg, 244 ± 83 µg µg/kg, 598 ± 222 µg/kg, 340 ± 189 µg/kg, 548 ± 278 µg/kg, 217 ± 77 µg/kg, 558 ± 297 µg/kg, 391 ± 263 µg/kg and 679 ± 285 µg/kg in potato chips, chanachur (a locally processed food), potato crisps, biscuits, cake, bread, crackers, breakfast cereals and French fries respectively. The use of different ingredients during the manufacturing process might affect on acrylamide formation as different ingredients contained variable amounts of free asparagines and reducing sugars to form acrylamide. Among the analyzed samples, 20% of potato chips, 5% of chanachur, 15% of potato crisps, 15% of biscuit, 10% of cake, 15% of bread, 20% of crackers, 10% of breakfast cereal and 20% of French fries samples, representing only a few samples in each category, were found to have acrylamide contents above benchmark levels set by the European Commission [EC]. This study provided an estimation of the presence of acrylamide traces in heat treated carbohydrate rich foods consumed by local population.
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Human exposure to nonessential trace elements occurs from food crops that are contaminated by the soil. The present study aimed to determine the level of heavy metals in soil and rice samples using an atomic absorption spectrophotometer from three major industrial areas in Bangladesh: Savar, Gazipur, and Ashulia. Heavy metals were detected in the order Fe > Zn > Ni > Cr > Pb > Co > Cu > Cd > As and Zn > Cu > Cr > Co > Fe > Cd > Pb > Ni > As in the soil and rice samples, respectively. From this analysis, it was observed that the detected concentrations of Zn, Cd, Cr, and Co were higher than the WHO/FAO recommended maximum tolerance values. The transfer factor of the detected heavy metals from soil to rice was detected in the following order: Zn > Cu > Cr > Co > Cd > Pb > Fe > As > Ni. The accumulation of heavy metals in rice is a major public health concern. Therefore, we recommend strict regulations for the safety of food crops grown in the study areas.
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Metais Pesados , Oryza , Poluentes do Solo , Bangladesh , Cádmio , China , Monitoramento Ambiental , Humanos , Chumbo/análise , Metais Pesados/análise , Medição de Risco , Solo , Poluentes do Solo/análiseRESUMO
In the present study, the presence of organophosphorus (OPs) and carbamates (CBs) residues in the pond water and cultured Pangas catfish (Pangasius pangasius) samples collected from Comilla and Mymensingh areas were detected and assessed for their potential health risks. A total of 100 samples from each category were analysed among which 17% of the pond water samples and 9% of the fish samples were detected contaminated with OP and CB residues. The pond water and fish samples were extracted by liquid-liquid extraction (LLE), quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction, and ultrasonic extraction, respectively, and analysed through gas chromatography tandem mass spectrometry (GC-MS/MS). Among the detected OPs, Dursban (chlorpyrifos) and dichlorvos were detected, while among CB pesticides, carbofuran and sevin (Carbaryl) were detected in fish muscle samples. The detected OP and CB residual levels were below than the maximum residue limits (MRLs). The risk assessment study indicated no potential health risks. However, the level of compliance should be maintained through proper monitoring and controlling the overuse of pesticides in agricultural fields for public health safety.
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In this study, the levels of indicator PCBs congeners and PAHs compounds were reported in cow milk from selected areas in Dhaka, Bangladesh, and the potential human health risks were assessed. A total of 100 milk samples were collected and analyzed using gas chromatography-tandem mass spectrometry (GC-MS/MS). Method validation was performed using recovery performance, linearity, limit of detection (LOD), and limit of quantification (LOQ) assays. PCBs congeners, including PCB No. 52 (2,2´,5,5´-tetrachlorobiphenyl), PCB No. 101 (2,2´,4,5,5´-pentachlorobiphenyl), PCB No. 153 (2,2,4,4,5,5-hexachlorobiphenyl), and PCB No 209 (Decachloro-1,1'-biphenyl perchlorobiphenyl) were detected, whereas PCB No 28 (2,2 ´,4-trichlorobiphenyl), PCB No. 138 (2,2´,3,4,4´,5´-hexachlorobiphenyl), and PCB No 180 (2,2´,3,4,4´,5,5´-heptachlorobiphenyl) were not detected in the analyzed milk samples. Among the 16 PAHs compounds, benzo (a) anthracene and chrysene were detected in milk samples. The Σ hazard risk index (HI) of all detected PCBs congeners was below the limit set by the European Food Safety Authority, which indicates limited health risks to animals and humans in the study area. However, the presence of PCBs and PAHs in milk samples from industrial areas may negatively affect human health, and further detailed studies are required to ensure public health safety.
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Melanotic neuroectodermal tumour in infancy is rare, mainly benign with little tendency to recur after excision or effective curettage. This pigmented neoplasm of neural crest origin occurring in infants before 1 year of age. The most common site of occurrence is the anterior maxillary alveolar ridge (70%), following by the skull, brain and mandible. The genital organ is the most frequent extra cranial site. We report a 6 months old male baby with a similar tumour arising from right half of cheek involving the maxilla. We diagnosed the case after histological report. We remove the tumour through a sub-labial incision. The mass was blackish in colour, and was mobilized from all side including from the maxillary sinuses. The author thought that this should be reported for improving the clinical awareness and treatment of pigmented soft tissue mass in children. Almost one year follow up of the patients showed no recurrence.
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Neoplasias Faciais/diagnóstico , Tumor Neuroectodérmico Melanótico/diagnóstico , Neoplasias Faciais/patologia , Neoplasias Faciais/cirurgia , Humanos , Lactente , Masculino , Tumor Neuroectodérmico Melanótico/patologia , Tumor Neuroectodérmico Melanótico/cirurgiaRESUMO
OBJECTIVE: To describe the prevalence and treatment regimes, disease characteristics, and comorbid diseases among patients with psoriatic arthritis (PsA) in Denmark. METHODS: All Danish individuals aged ≥ 18 years with rheumatologist-diagnosed PsA were linked in nationwide administrative registers. RESULTS: Among 4.7 million individuals in Denmark, 10,577 patients with PsA had been diagnosed by a rheumatologist. A female predominance (54.5-59.8%) was seen among patients with PsA, and about half of the patients (53.0%) had received no treatment or treatment only with nonsteroidal antiinflammatory drugs/systemic corticosteroids, while 32.9% had received nonbiological disease-modifying antirheumatic drugs (DMARD) and 14.1% had been treated with biologicals. Cutaneous psoriasis was recorded in 66.2-72.3% of patients with PsA, and patients with severe PsA had the highest prevalences of distal interphalangeal arthropathy, spondylitis, and arthritis mutilans. Smoking and comorbid diseases such as hypertension, diabetes, depression, and anxiety were seen frequently in patients with PsA, but did not significantly differ across severities of PsA. CONCLUSION: Disease burden appeared to be significant in patients with PsA across all severities. A considerable proportion of patients with PsA did not receive active antipsoriatic treatment, and about 1 out of 3 patients was not diagnosed with psoriasis. Cutaneous symptoms of psoriasis in patients with PsA might be either underreported or undertreated.
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Corticosteroides/uso terapêutico , Anti-Inflamatórios não Esteroides/uso terapêutico , Artrite Psoriásica/tratamento farmacológico , Artrite Psoriásica/epidemiologia , Produtos Biológicos/uso terapêutico , Índice de Gravidade de Doença , Adulto , Idoso , Artrite Psoriásica/patologia , Comorbidade , Estudos Transversais , Dinamarca/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores Sexuais , Resultado do TratamentoRESUMO
Calcification of soft tissue and blood vessel wall occurs more frequently in dialyzed patients. The purpose of the present study was to estimate the risk of abdominal aortic calcification among end stage renal disease patients under maintenance haemodialysis. This case-control study was carried out in the Department of Nephrology at National Institute of Kidney Diseases and Urology (NIKDU), Dhaka and National Institute of Cardiovascular Disease and Hospital (NICVD), Dhaka, Bangladesh from January 2013 to December 2014 for a period of two (02) years. Chronic kidney disease in stage 5 {CKD-5(D)} patients older than 18 years on maintenance haemodialysis (MHD) for more than 3 months were selected as case group. And same age and sex non CKD patients were considered as control group. Serum calcium, serum albumin, serum phosphate and iPTH were estimated by semi-automated biochemistry analyzer from the Department of Biochemistry of NIKDU, Dhaka and NICVD, Dhaka. Plain X-ray abdomen in lateral view was performed for all patients. Total 100 patients were enrolled for this study of which 50 patients were in end stage renal disease (ESRD) group and the rest 50 patients were in non-CKD group. Abdominal aortic calcification on X ray was present in 22(44%) patients of ESRD group and 6(12%) patients of non CKD group of population. Mean±SD serum calcium (corrected) level was significantly high (p<0.001) in ESRD patients (9.79±0.87) compared to non CKD group of population (9.13±0.70). Mean±SD of serum phosphate level was significantly higher (p<0.001) in ESRD patients (5.71±0.96) compared to non CKD group of population (4.20±0.59). However, mean±SD iPTH level showed no significant difference between ESRD (25.33±51.98) and non CKD group of population (38.53±19.52), though iPTH level remain below the target level in ESRD group. Abdominal aortic calcification is significantly higher among ESRD subjects.
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Aorta Abdominal , Calcinose , Falência Renal Crônica , Insuficiência Renal Crônica , Aorta Abdominal/patologia , Bangladesh , Calcinose/etiologia , Estudos de Casos e Controles , Humanos , Diálise Renal , Insuficiência Renal Crônica/complicações , Fatores de RiscoRESUMO
A polymerase chain reaction-based method was used to generate a Drosophila melanogaster antennal cDNA library from which head cDNAs were subtracted. We identified five cDNAs that code for antennal proteins containing six cysteines in a conserved pattern shared with known moth antennal proteins, including pheromone-binding proteins. Another cDNA codes for a protein related to vertebrate brain proteins that bind hydrophobic ligands. In all, we describe seven antennal proteins which contain potential signal peptides, suggesting that, like pheromone-binding proteins, they may be secreted in the lumen of olfactory hairs. The expression patterns of these putative odorant-binding proteins define at least four different subsets of olfactory hairs and suggest that the Drosophila olfactory apparatus is functionally segregated.
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Drosophila melanogaster/metabolismo , Receptores Odorantes/biossíntese , Sequência de Aminoácidos , Animais , Sequência de Bases , Clonagem Molecular , Primers do DNA , DNA Complementar/biossíntese , DNA Complementar/metabolismo , Drosophila melanogaster/genética , Expressão Gênica , Biblioteca Gênica , Dados de Sequência Molecular , Família Multigênica , Odorantes , Mucosa Olfatória/metabolismo , Especificidade de Órgãos , Reação em Cadeia da Polimerase , Sinais Direcionadores de Proteínas/biossíntese , Homologia de Sequência de AminoácidosRESUMO
Solid waste management (SWM) services have consistently failed to keep up with the vast amount of solid waste produced in urban areas. There is not currently an efficient system in place for the management, storage, collection, and transportation of solid waste. Kathmandu City, an important urban center of South Asia, is no exception. In Kathmandu Metropolitan City, solid waste generation is predicted to be 1091 m(3)/d (245 tons/day) and 1155 m(3)/d (260 tons/day) for the years 2005 and 2006, respectively. The majority (89%) of households in Kathmandu Metropolitan City are willing to segregate the organic and non-organic portions of their waste. Overall collection efficiency was 94% in 2003. An increase in waste collection occurred due to private sector involvement, the shutdown of the second transfer station near the airport due to local protest, a lack of funding to maintain trucks/equipment, a huge increase in plastic waste, and the willingness of people to separate their waste into separate bins. Despite a substantial increase in total expenditure, no additional investments were made to the existing development plan to introduce a modern disposal system due to insufficient funding. Due to the lack of a proper lining, raw solid waste from the existing dumping site comes in contact with river water directly, causing severe river contamination and deteriorating the quality of the water.
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Eliminação de Resíduos/métodos , Gerenciamento de Resíduos/métodos , Cidades , Nepal , Meios de TransporteRESUMO
Injection use problem in the hospitals of upazilla health complexes (UHCs) of Dhaka and Noakhali districts was studied through small group discussion with the health personnel of each the UHCs. The group discussion revealed that in the hospitals of UHCs of Dhaka, the antibiotic injections were used in 70% to 100% of the encounters in ARI/pneumonia. In dehydration, I.V. fluid and antimicrobial injections were used in 60% to 100% of the encounters. Similarly 60% to 70 % of the encounters received analgesic and antibiotic injections in injury. Injections were used in > or =30% of the encounters in pyrexia of unknown origin. The use of injections in the hospitals of the UHCs of Noakhali was comparatively less than that of Dhaka, but was still too high. In ARI/pneumonia antibiotic injections were used in 60% to 80% of the encounters. In dehydration, I.V. fluid and antimicrobial injections and in injury, analgesic and antibiotic injections were used in 60% to 80% of the encounters in each of the health conditions. In weakness, I.V. fluid and amino acid injections were used in 100% and 50% of the encounters respectively. In undiagnosed fever antibiotic injections were use in 60% of the encounters. The findings of the retrospective prescribing survey in those health complexes of the two districts corroborated the findings of the small group discussion. In the UHCs of Dhaka districts excessive injections were used in (i) ARI/pneumonia, (ii) dehydration and (iii) in injury. In ARI/pneumonia antibiotic injections were used in 100%, 94%, and 75% of the encounters in Dohar, Savar and Nawabgonj UHCs respectively. In dehydration, I.V. fluid was used in 100% and 89% of the encounters in Dhamrai and Keranigonj UHCs respectively. The I.V. fluid was also used in 76% of the encounters in injury. In the UHCs of Noakhali the injection use was somewhat less than that of Dhaka. Ceftriaxone injection was used in 87% and 77% of the encounters in ARI/pneumonia in Companygonj and Sonaimuri UHCs respectively. In the other three UHCs, analgesic injections were used in 80%, 67% and 67% of the encounters in Subarnochar, Chatkhil and Senbag respectively.
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Injeções/estatística & dados numéricos , Antibacterianos/administração & dosagem , Bangladesh , Uso de Medicamentos , Hidratação , HumanosRESUMO
Although lay notions in normative ethics have previously been investigated within the framework of the dual-process interpretation of the terror management theory (TMT), meta-ethical beliefs (subjective vs. objective morality) have not been previously investigated within the same framework. In the present research, we primed mortality salience, shown to impair reasoning performance in previous studies, to see whether it inhibits subjectivist moral judgments in three separate experiments. In Experiment 3, we also investigated whether impaired reasoning performance indeed mediates the effect of mortality salience on subjectivism. The results of the three experiments consistently showed that people in the mortality salience group reported significantly less subjectivist responses than the control group, and impaired reasoning performance partially mediates it. Overall, the results are consistent with the dual-process interpretation of TMT and suggest that not only normative but also meta-ethical judgments can be explained by this model.
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Atitude Frente a Morte , Teoria Ética , Julgamento , Princípios Morais , Adulto , Feminino , Humanos , Masculino , Modelos Psicológicos , Adulto JovemRESUMO
BACKGROUND: The inositol 1,4,5-trisphosphate (IP3) receptor is an intracellular calcium channel that couples cell membrane receptors, via the second messenger IP3, to calcium signal transduction pathways within many types of cells. IP3 receptor function has been implicated in development, but the physiological processes affected by its function have yet to be elucidated. In order to identify these processes, we generated mutants in the IP3 receptor gene (itpr) of Drosophila and studied their phenotype during development. RESULTS: All itpr mutant alleles were lethal. Lethality occurred primarily during the larval stages and was preceded by delayed moulting. Insect moulting occurs in response to the periodic release of the steroid hormone ecdysone which, in Drosophila, is synthesized and secreted by the ring gland. The observation of delayed moulting in the mutants, coupled with the expression of the IP3 receptor in the larval ring gland led us to examine the effect of the itpr alleles on ecdysone levels. On feeding ecdysone to mutant larvae, a partial rescue of the itpr phenotype was observed. In order to assess ecdysone levels at all larval stages, we examined transcripts of an ecdysone-inducible gene, E74; these transcripts were downregulated in larvae expressing each of the itpr alleles. CONCLUSIONS: Our data show that disruption of the Drosophila IP3 receptor gene leads to lowered levels of ecdysone. Synthesis and release of ecdysone from the ring gland is thought to occur in response to a neurosecretory peptide hormone secreted by the brain. We propose that this peptide hormone requires an IP3 signalling pathway for ecdysone synthesis and release in Drosophila and other insects. This signal transduction mechanism which links neuropeptide hormones to steroid hormone secretion might be evolutionarily conserved.
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Canais de Cálcio/fisiologia , Proteínas de Ligação a DNA/genética , Drosophila/fisiologia , Ecdisona/metabolismo , Metamorfose Biológica/fisiologia , Receptores Citoplasmáticos e Nucleares/fisiologia , Fatores de Transcrição/genética , Alelos , Animais , Canais de Cálcio/genética , Drosophila/genética , Proteínas de Drosophila , Ecdisterona/farmacologia , Receptores de Inositol 1,4,5-Trifosfato , Larva , Metamorfose Biológica/genética , Mutação , Receptores Citoplasmáticos e Nucleares/genética , Transcrição GênicaRESUMO
Glucose can block the utilization of N-acetylglucosamine in Saccharomyces cerevisiae, a facultative aerobe, but not in Candida albicans, an obligatory aerobe. Furthermore, glucose represses the synthesis of the enzymes of the N-acetylglucosamine catabolic pathway in S. cerevisiae, but not in C. albicans. The results suggest that catabolite repression is present in S. cerevisiae, but not in C. albicans. Cyclic AMP added to S. cerevisiae cells maintained in a glucose medium cannot bring about their release from catabolite repression. On the contrary, the synthesis of inducible enzymes of N-acetylglucosamine pathway was inhibited by cyclic AMP in both the yeasts. This seems to indicate that cyclic AMP can penetrate into the yeast cells. Furthermore, cyclic AMP inhibits protein synthesis, suggesting that protein synthesis in yeast is under cyclic AMP control.
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Acetilglucosamina/metabolismo , AMP Cíclico/metabolismo , Glucosamina/análogos & derivados , Glucose/metabolismo , Leveduras/metabolismo , Candida albicans/metabolismo , Indução Enzimática , Proteínas Fúngicas/biossíntese , Saccharomyces cerevisiae/metabolismo , Especificidade da EspécieRESUMO
Larval molting in Drosophila, as in other insects, is initiated by the coordinated release of the steroid hormone ecdysone, in response to neural signals, at precise stages during development. In this study we have analyzed, using genetic and molecular methods, the roles played by two major signaling pathways in the regulation of larval molting in Drosophila. Previous studies have shown that mutants for the inositol 1,4,5-trisphosphate receptor gene (itpr) are larval lethals. In addition they exhibit delays in molting that can be rescued by exogenous feeding of 20-hydroxyecdysone. Here we show that mutants for adenylate cyclase (rut) synergize, during larval molting, with itpr mutant alleles, indicating that both cAMP and InsP(3) signaling pathways function in this process. The two pathways act in parallel to affect molting, as judged by phenotypes obtained through expression of dominant negative and dominant active forms of protein kinase A (PKA) in tissues that normally express the InsP(3) receptor. Furthermore, our studies predict the existence of feedback inhibition through protein kinase A on the InsP(3) receptor by increased levels of 20-hydroxyecdysone.
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Adenilil Ciclases/metabolismo , AMP Cíclico/metabolismo , Drosophila/crescimento & desenvolvimento , Inositol 1,4,5-Trifosfato/metabolismo , Larva/metabolismo , Transdução de Sinais , Alelos , Animais , Animais Geneticamente Modificados , Canais de Cálcio/genética , Canais de Cálcio/metabolismo , Proteínas Quinases Dependentes de AMP Cíclico/metabolismo , Drosophila/metabolismo , Receptores de Inositol 1,4,5-Trifosfato , Mutação , Receptores Citoplasmáticos e Nucleares/genética , Receptores Citoplasmáticos e Nucleares/metabolismoRESUMO
Scientific and religious thinking compete with each other on several levels. For example, activating one generally weakens the other. Since priming religion is known to increase moral behaviour and moral sensitivity, priming science might be expected to have the opposite effect. However, it was recently demonstrated that, on the contrary, science priming increases moral sensitivity as well. The present set of studies sought to replicate this effect and test two explanations for it. Study 1 used a sentence unscrambling task for implicitly priming the concept of science but failed to replicate its effect on moral sensitivity, presumably due to a ceiling effect. Study 2 replicated the effect with a new measure of moral sensitivity. Study 3 tested whether science-related words create this effect by activating the idea of secular authority or by activating analytic thinking. It was demonstrated that words related to secular authority, but not words related to analytic thinking, produced a similar increase in moral sensitivity. Religiosity level of the participants did not influence this basic finding. The results are consistent with the hypothesis that science as a secular institution has overtaken some of the functions of religion in modern societies.
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Comportamento de Escolha/ética , Princípios Morais , Religião e Ciência , Adolescente , Adulto , Feminino , Humanos , MasculinoRESUMO
A single gene appears to code for the inositol 1,4,5-trisphosphate receptor (itpr) in Drosophila melanogaster, as compared to three known genes in mammals. Expression of the itpr gene in Drosophila occurs in a wide range of tissues and developmental stages, suggesting its requirement during diverse cellular and physiological processes. A head cDNA for the Drosophila IP3R has previously been cloned and sequenced. Here we present and analyse the sequence of cDNAs encoding the complete IP3R, obtained from embryonic stages. The embryonic cDNA is 10525bp long and is a splice variant of the head cDNA. It differs from the latter in three main respects. It has longer 5' and 3' untranslated regions, two potential casein kinase II sites are missing in the embryo form and it contains an alternate exon which results in the replacement of three residues (VHF) in the head form by five residues (GVGHSV) in the embryo form. The significance of these changes is discussed. An exon-intron map of the gene derived from sequencing of intron-containing genomic fragments is also presented. The gene has a total of 11 introns, of which more than half are clustered in a region of the modulatory domain of the IP3R.