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1.
AbstractIn the literature various theories of culture change have been developed relevant to the Dakota Indians. These theories of change can be grouped under the headings of psychological, social, and cultural change.Psychologically the changes in Dakota personality are seen as developing from the child-rearing process. Social change has been regarded as reflecting the changing values within the family circle due to pressure from white culture. Culture change has been hypothesized as due to indoctrination in the Dakota value system during childhood. It is this persistence of Dakota values which is the main deterrent to the acceptance of many non-Indian skills. 相似文献
2.
AimPancreatic cancer is one of the least common tumors, nevertheless it is one of the most lethal. This lethality is mainly due to the fact that the vast majority of patients are diagnosed in an advanced stage. The objective of this work is investigate how different covariates affect the transition to death after a first admission due to pancreatic cancer. MethodsWe analyze the impact of different factors on health related transitions after a first hospital admission related to pancreatic cancer based on a multi state model. ResultsTransitions of interest include the transition to death (i.e. survival time), but also the time between a first admission and discharge or between discharge and readmission. We consider comorbidities, the type of admission, and especially the performance of pancreas surgery as covariates with a potential effect on the transition intensities. ConclusionThe multi state model allows for a very detailed analysis since all covariate effects may change depending on the current state of the patient. 相似文献
3.
Abstract This paper studies the effect of having at least one male offspring on a sex‐linked recessive disease and the fraction of affected males due to fresh mutations. The equilibrium frequency of heterozygous females depends not only on the intensity of the reproductive compensation, but also on the time of mutational change. It has been shown that the frequency ranges from 4 u without reproductive compensation to √2 u or √3 u with strict compensation, where u is the mutation rate from the wild type allele to lethal gene. The frequency √2 u is achieved when mutation occurs in mature germ cells, whereas, √3 u achieved when mutation occurs in early development of germ cells. This increased frequency of heterozygous females due to reproductive compensation reduces considerably the proportion of affected males due to fresh mutation. 相似文献
4.
Abstract The relationship between family type and fertility among Iranian peasant women is examined through multiple classification analysis. It is shown that peasant women living in extended families have a significantly lower level of fertility than do those living in nuclear families. The hypothesis that part of this lower fertility is due to population pressure on the limited resources of the household is tested, and it is noted that women in extended families with three or more “non‐nuclear” members have the lowest level of fertility. 相似文献
5.
BackgroundFemale leadership in medicine is still disproportionately small, which might be due to the barriers of combining work and family. ObjectivesThe aim of this study was, first, to perform a strengths, weakness, opportunities, and threats (SWOT) analysis and, second, to create a strategic concept for career development. MethodsIn this study, all women in leadership positions in the health care system in Vienna, Austria, with at least 1 child (n = 8), were interviewed about the advantages and disadvantages of gender with regard to career development, the strengths and weaknesses of female leadership, and their work–life balance. Different factors that influenced the work–life balance were specified, and career strategies to realize adequate solutions were developed. ResultsThe sporadic focus on career advancement, time-consuming child care, responsibility for family life, and a woman's tendency toward understatement were barriers to career development. Work–family enrichment has a positive spillover effect that spreads positive energy and helps to balance the work–life relationship. For each individual, the allocation and interaction of different resources such as time, money, scope of decision making, and physical, emotional, and social resources, were essential to maintain the individual work–life balance. ConclusionsIn addition to the existing “glass ceiling,” the predominant responsibility for child care is still borne by the woman. However, mentoring programs, coaching, networking, and support of the partner or of other people help to strengthen female “soft” skills and achieve a work–life balance. 相似文献
6.
PurposeA mutant BA-SacB-Del encoding BA-SacB minus K296-D320 region was constructed to analyze its effect on catalytic characteristics of the enzyme as well as help deepen understanding of the catalytic mechanism of BA-SacB and even proteins of GH68 family. MethodsBased on the comparison of levansucrases from Bacillus amyloliquefaciens (BA-SacB) and Sphingopyxis macrogoltabida (SM-Lev), a mutant BA-SacB-Del encoding BA-SacB minus K296-D320 region was constructed and its effect on catalytic characteristics of the enzyme was analyzed. ResultsDeletion of this region would undoubtedly affect the conserved structure (i.e., central negatively charged cavity surrounded by five antiparallel β-strands) shared by the GH68 family. Therefore, Escherichia coli-expressing mutant BA-SacB-Del could more efficiently catalyze the production of levan in media containing high concentration of sucrose, which is unrealizable for BA-SacB. ConclusionsThis result should be valuable for understanding this conditional lethal mechanism. Therefore, this study should be very valuable for understanding the catalytic mechanism of BA-SacB and even proteins of the GH68 family. More importantly, levan can be conveniently produced by direct fermentation of sucrose-containing media with E. coli-expressing BA-SacB-Del which is not sensitive to sucrose. 相似文献
7.
The original analysis of the axisymmetric magnetorotational instability (MRI) by Velikhov (Sov. Phys. JETP 9, 995 (1959)) and Chandrasekhar (Proc. Nat. Acad. Sci. 46, 253 (1960)), applied to the ideally conducting magnetized medium in the laboratory conditions and restricted to the incompressible
approximation, is extended by allowing for the compressibility. Thereby, two additional driving mechanisms of MRI are revealed
in addition to the standard drive due to the negative medium rotation frequency gradient (the Velikhov effect). One is due
to the squared medium pressure gradient and another is a combined effect of the pressure and density gradients. For laboratory
applications, the expression for the MRI boundary with all the above driving mechanisms and the stabilizing magnetoacoustic
effect is derived. The effects of parallel and perpendicular viscosities on the MRI in the laboratory plasma are investigated.
It is shown that, for strong viscosity, there is a family of MRI driven for the same condition as the ideal one. It is also
revealed that the presence of strong viscosity leads to additional family of instabilities called the viscosity-driven MRI.
Then the parallel-viscositydriven MRI looks as an overstability (oscillatory instability) possessing both the growth rate
and the real part of oscillation frequency, while the perpendicular-viscosity MRI is the aperiodical instability.
Published in Russian in Fizika Plazmy, 2008, Vol. 34, No. 10, pp. 908–917.
The text was submitted by the authors in English. 相似文献
8.
【目的】测定金龟子绿僵菌(Metarhizium anisopliae)对斜纹夜蛾(Spodoptera litura) 2龄幼虫的毒力,研究金龟子绿僵菌侵染后寄主体内抗氧化酶活性和肠道内细菌群落的变化,探讨斜纹夜蛾对金龟子绿僵菌侵染的防御机制。【方法】采用浸渍法测定不同浓度金龟子绿僵菌对斜纹夜蛾2龄幼虫的毒力;应用IlluminaMiSeq高通量测序技术测定肠道细菌群落。【结果】不同浓度的孢悬液对斜纹夜蛾2龄幼虫均有一定的毒力,处理7 d时半致死浓度(LC 50)为3.944 107个孢子/mL;浓度为1.0×10 9个孢子/mL时,半致死时间最短(LT 50)为4.6 d,校正后的死亡率为81.03%。处理后未致死的斜纹夜蛾幼虫体内抗氧化酶活性显著高于对照组。处理后致死的斜纹夜蛾幼虫肠道细菌群落多样性显著高于对照组;且处理后致死的斜纹夜蛾幼虫肠道细菌群落组成与对照组差异显著。【结论】金龟子绿僵菌对斜纹夜蛾幼虫的致死率和致死效率与金龟子绿僵菌的浓度呈正相关;斜纹夜蛾幼虫体内的抗氧化酶可能在抵抗金龟子绿僵菌侵染的过程中起重要作... 相似文献
9.
IntroductionTaking care of a relative with dementia may be linked to negative consequences for the caregiver. One of the processes that can be experienced is anticipatory grief, that is defined as the feelings of pain and loss that appear in the caregiver before the death of the person cared for. ObjectivesThe review aimed to conceptualize anticipatory grief in this population, to study the related psychosocial variables, and to know the repercussions for the health of the caregiver. MethodA systematic search was made under the directives of PRISMA statement in the ProQuest, PubMed, Web of Science (WOS), and Scopus databases, including studies published in the last 10 years (2013–2023). ResultsA total of 160 articles were obtained, 15 being finally selected. It is observed that anticipatory grief is defined as an ambiguous process since it appeared before the death of the sick family member. Being a female caregiver, spouse of a family member with dementia, having a closer relationship with him and/or having an important responsibility in care, are associated with a greater chance of experiencing anticipatory grief. In relation to the person cared for, if he or she is in a severe phase of the disease, is younger, and/or presents problematic behaviours, there is also greater anticipatory grief in the family caregiver.Anticipatory grief has a significant impact on caregivers’ physical, psychological, and social health, being associated with greater burden, depressive symptomatology, and social isolation. ConclusionsAnticipatory grief turns out to be a relevant concept in the context of dementia, being necessary to include it in intervention programs for this population. 相似文献
10.
BackgroundFamily involvement in overcoming the severity of leprosy is very important in the life of leprosy sufferers in communities who experience the clinical and, psychological, social and behavioral consequences of the disease. However, this need, psychosocial, is felt to be not optimal. This study is to identify how the experiences of family members as caregivers provide assistance to individuals with leprosy in improving healing and maintaining patterns of interaction in the family. MethodsThe design uses qualitative research with in-depth, face-to-face interviews with family members in a semi-structured manner with the hope of obtaining complete data. Using purposive sampling with Participatory Interpretative Phenomenology analysis, there are 12 families with 15 family members consisting of 4 men and 11 women. ResultsThis study produced a family theme that tried to follow what would happen to individuals with leprosy, with four sub-categories: 1) Using various coping alternatives to recognize the disease, 2) Family members in the shadow of leprosy, 3) Trying to empathize with other family members. sick, 4) Caring for the emotional response of the family and seeking support. ConclusionsThis analysis shows that deficiency in cognitive aspects can be closed by maintaining a lifestyle in the family through efforts to understand, support, establish communication, increase maximum involvement in restoring self-confidence, especially in individuals with leprosy with psychosocial problems in the family. The results of this study can be used as psychosocial support in maintaining communication between family members to support treatment programs and accelerate the recovery of leprosy. 相似文献
11.
ObjectiveTo examine the relation between birth weight and measured intelligence at age 7 years in children within the normal range of birth weight and in siblings. DesignCohort study of siblings of the same sex. Setting12 cities in the United States. Subjects3484 children of 1683 mothers in a birth cohort study during the years 1959 through 1966. The sample was restricted to children born at ⩾37 weeks gestation and with birth weights of 1500-3999 g. ResultsMean IQ increased monotonically with birth weight in both sexes across the range of birth weight in a linear regression analysis of one randomly selected sibling per family (n= 1683) with adjustment for maternal age, race, education, socioeconomic status, and birth order. Within same sex sibling pairs, differences in birth weight were directly associated with differences in IQ in boys (812 pairs, predicted IQ difference per 100 g change in birth weight =0.50, 95% confidence interval 0.28 to 0.71) but not girls (871 pairs, 0.10, −0.09 to 0.30). The effect in boys remained after differences in birth order, maternal smoking, and head circumference were adjusted for and in an analysis restricted to children with birth weight ⩾ 2500 g. ConclusionThe increase in childhood IQ with birth weight continues well into the normal birth weight range. For boys this relation holds within same sex sibships and therefore cannot be explained by confounding from family social environment. What is already known on this topicIQ at school age is linked to birth weight among low birthweight babiesSome evidence suggests the association might also apply to children of normal birth weight What this study addsIQ at age 7 years is linearly related to birth weight among children of normal birth weightThe relation was not due to confounding by maternal or socioeconomic factorsIQ is also associated with differences in birth weight between boy sibling pairs but not girls 相似文献
12.
BackgroundMajor depressive disorder has been shown to affect many domains of family life including family functioning. Conversely, the influence of the family on the course of the depression, including the risk of relapse, is one reason for targeting the family in interventions. The few studies conducted within this area indicate that family psychoeducation as a supplement to traditional treatment can effectively reduce the risk of relapse in patients with major depression as well as being beneficial for the relatives involved. However, the evidence is currently limited. This study will investigate the effect of family psychoeducation compared to social support on the course of the illness in patients with major depressive disorder. Method/designThe study is designed as a dual center, two-armed, observer-blinded, randomized controlled trial. Relatives are randomized to participate in one of two conditions: either four sessions of manualized family psychoeducation or four sessions in a social support group led by a health care professional. Patients will not participate in the groups and will continue their treatment as usual. A total of 100 patients, each accompanied by one relative, will be recruited primarily from two outpatient clinics in the Capital Region of Denmark.The primary outcome is the occurrence of depressive relapse at 9-month follow-up defined as a score ≥7 on the Hamilton six-item subscale. Secondary outcomes will include time to relapse. DiscussionIt is hoped that the results from this study will help to clarify the mechanisms behind any beneficial changes due to family psychoeducation and provide information on the long-term effect of this intervention for both patient and relatives. If the results are positive, the family psychoeducation program may be suitable for implementation within a clinical setting. Trial registrationClinicalTrials.gov Identifier: {"type":"clinical-trial","attrs":{"text":"NCT02348827","term_id":"NCT02348827"}}NCT02348827, registered 5 January 2015. 相似文献
13.
Background:Multicultural societies exist worldwide. Two important challenges can be appreciated in this scenario. Minority populations, due to a combination of genetic and lifestyle factors, have a particularly high risk for developing type 2 diabetes mellitus (DM). In addition, the quality of health care provided to minority populations, including that for DM, has lagged behind that provided to the white population. Because multiple medical, social, and cultural factors influence the development and progression of type 2 DM, management of patients becomes even more challenging if health care providers cannot identify and address the many contributing factors. Objective:The objective of this article was to raise awareness about the most common social and cultural factors that may influence the development of type 2 DM, progression of the disease, and adherence to treatment plans in patients from culturally diverse populations. Methods:A PubMed search of English-language articles published primarily between 1996 and 2006 was conductedusing the search terms Latino, Hispanic, culture, and diabetes, and a list of social and cultural factors associated with type 2 DM was created based on relevant articles and on the author's expertise and experience in the Latino Diabetes Initiative at the Joslin Diabetes Center. Results:There is increasing evidence that social and cultural factors such as body image, educational level, fears, general family integration and support, health literary, language, myths, and nutritional preferences, among others, may affect the success of the physician patient relationship and influence patients' adherence to treatment. Specific strategies to help clinicians remember to address multiple factors in the day-to-day management of patients with type 2 DM who are from culturally diverse populations include asking questions about patients' personal goals, ascertaining what behaviors they have adopted from mainstream culture, understanding how family ties may affect DM care and prevention, and being aware of patients' educational level when implementing any educational activity. Conclusions:The standards of DM care apply to every individual with this disease and should continue to be the core of every clinicians practice. However, improving health care providers' cultural competence may help improve the quality of care provided to minority groups and may ultimately reduce health care disparities. Increased cultural competence may also improve patient-provider trust and communication, as well as help patients adhere to prevention and treatment plans. 相似文献
14.
AimsDecoy receptors bind with TNF related apoptosis inducing ligands (TRAIL) but do not contain the cytoplasmic domains necessary to transduce apoptotic signals. We hypothesized that decoy receptors may confer neuronal protection against lethal ischemia after ischemic preconditioning (IPC). Main methodMixed cortical neurons were exposed to IPC one day prior to TRAIL treatment or lethal ischemia. Key findingsIPC increased decoy receptor but reduced death receptor expression compared to lethal ischemia. IPC-induced increase in decoy receptor expression was reduced by prior treatment with CAPE, a nuclear factor-kappa B inhibitor (NFκB). SignificanceExpression of decoy molecules, dependent on NFκB, may mediate neuronal survival induced by IPC. 相似文献
15.
Abstract A comprehensive model of family influences on educational resemblance of siblings expands the traditional sibling pair model to a full sibship model in order to investigate how gender, gender composition of sibships, and a measure of ordinal position moderate the effect of social origins on educational attainments of siblings. One common family factor is sufficient to explain the variation of educational attainment among brothers and sisters. Although effects of social origin variables on brothers are larger than on sisters, the relative effects of measured social origins are virtually the same among sisters and brothers. The disparity between educational attainments of brothers and sisters persists across sex composition and family size. Ordinal position does not alter the effects of social origins on educational attainment nor does it directly affect educational attainment. Father's and mother's education are equally important for all siblings regardless of birth order, gender composition, and family size. 相似文献
16.
AbstractIn response to Hoebel's criticism (1980) of the use of a dialectical model to interpret Cheyenne history, this article examines Hoebel's own views on kinship, politics, and social change. It is argued that Hoebel confuses descent with residence, and is committed to a methodology which necessarily gives inconclusive results. Most importantly, it is argued that Hoebel's theoretical perspective, characterized as “historical reductionism,” imposes a rigidly normative structure onto a society that was undergoing radical social change in the nineteenth century. 相似文献
17.
AimThe objective of this investigation was to determine whether nitric oxide (NO) and peroxynitrite alter the gene expression of interleukin receptors (IL-R) in cardiomyocytes. Main methodsCardiomyocytes, from neonatal mouse heart, in culture were treated with the NO donor 3-morpholinosydnonimine hydrochloride (SIN-1), which releases NO and peroxynitrite. IL-R gene expression was assessed by microarray analysis. Key findingsGene expression data show that the IL-2 receptor family showed a highly significant and 1.7-fold increase in the gamma chain component which is common to all members of the IL-2 family receptors. There was a significant and 2-fold increase in IL-21 R and an increase of 1.8-fold in IL-7 Rα gene expression. In contrast there was a significant 0.7-fold decrease in IL-9 Rα. The IL-1 receptor family showed a significant and 1.4-fold increase in IL-1 R1 compared to control but no change in IL-18 R1 gene expression which was similar to control. The IL-6 family showed a significant increase in oncostatin M receptor gene expression of 1.3-fold but no change in IL-6 R alpha or IL-11 R alpha. SignificanceThese data suggest that NO/peroxynitrite by increasing gene expression of certain IL-Rs may magnify the effects of specific interleukins in conditions of excess interleukin production. 相似文献
18.
Abstract Two recurrent concepts in fertility literature permit prediction of an inverse relationship between social class and fertility. The commitment to familism refers to the degree that couples embrace a family‐centered style of life over a consumerist or careerist style of life. Commitment to individual children refers to the emotional and material involvement of parents in each child they have. Data show that commitment to individual children is negatively related to fertility, that social class is negatively related to commitment to familism, that social class is positively related to commitment to individual children, and that commitment to familism and commitment to individual children account for relationships between class and fertility. 相似文献
19.
BackgroundPrenylated flavin mononucleotide (prFMN) is a recently discovered, heavily modified flavin compound. It is the only known cofactor that enables enzymatic 1,3-dipolar cycloaddition reactions. It is produced by enzymes from the UbiX family, from flavin mononucleotide and either dimethylallyl mono- or diphosphate. prFMN biosynthesis is currently reported to be initiated by protonation of the substrate by Glu140. MethodsComputational chemistry methods are applied herein - Constant pH MD, classical MD simulations, and QM cluster optimizations. ResultsGlu140 competes for a single proton with Lys129 prior to prFMN biosynthesis, but it is the latter that adopted a protonated state. Once the prenyl-FMN adduct is formed, Glu140 occurs in a protonated state far more often, while the occupancy of protonated Lys129 does not change. Lys129, Glu140, and Arg122 seem to play a key role in either stabilizing or protonating DMAP phosphate group within the PaUbiX active site throughout initial steps of prFMN biosynthesis. ConclusionsThe role of Lys129 in the functioning of PaUbiX is reported for the first time. Glu140 is unlikely to act as a proton donor in prFMN biosynthesis. Instead, Lys129 and Arg122 fulfil this role. Glu140 still plays a role in contributing to hydrogen-bond network. This behavior is most likely conserved throughout the UbiX family due to the structural similarity of the active sites of those proteins. SignificanceMechanistic insights into a crucial biochemical process, the biosynthesis of prFMN, are provided. This study, although purely computational, extends and perfectly complements the knowledge obtained in classical laboratory experiments. 相似文献
20.
ObjectiveTo discuss the implications of a young age at diagnosis in a family member with hyperparathyroidismjaw tumor syndrome, the youngest published case to date, due to a mutation of the CDC73 gene (formerly known as HRPT2); to review this family with regard to modifications of guidelines for surveillance of hyperparathyroidism and other associated features in affected and at-risk relatives; and to discuss surgical recommendations in this syndrome. MethodsA review of English-language publications in PubMed and a review of GeneReviews were conducted pertaining to the subject of familial hyperparathyroidism. A case is described, and the family pedigree is discussed. ResultsReview of the literature revealed that CDC73-related disorder has not previously been reported in patients younger than 10 years. This finding has been the basis for the recommendation for initiation of surveillance for disease manifestations at that age. Review of the family history of our current patient revealed a 7-yearold nephew with hypercalcemia attributable to primary hyperparathyroidism. ConclusionSurveillance of hyperparathyroidism in affected persons and genetic testing of relatives at risk are currently recommended to start at 10 years of age. We recommend that these be conducted at a younger age, preferably 5 to 10 years before the earliest diagnosis of hyperparathyroidism within the family, and potentially at birth in families with a known mutation of the CDC73 gene, in light of the malignant potential of the disease. (Endocr Pract. 2011;17:602-609) 相似文献
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