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1.
Within a fungal species, a subset of individuals may have more than the minimal complement of chromosomes. If the extra chromosomes are composed primarily of DNA not found in all representatives of the species, they are most appropriately referred to as supernumerary chromosomes. The patterns of repeated DNA sequences on certain supernumerary chromosomes suggest that they have a different evolutionary history from the essential chromosomes in the same genome. Supernumerary chromosomes can carry functional genes and, in at least two fungal species, genes on such chromosomes play important roles in host-pathogen interactions. Supernumerary chromosomes that confer an adaptive advantage in certain habitats, such as the ability to cause disease on a specific host, may be referred to as "conditionally dispensable" chromosomes in order to reflect their importance in some, but not all, growth conditions. In addition to describing the structural and functional characteristics of known supernumerary chromosomes in fungi, this review discusses the relative merits of the terms that have been used to describe them, and establishes experimental criteria for their identification.  相似文献   

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This study explored the extent to which specific aspects of violent victimization are associated with cognitive schemata in the context of ongoing, often lifelong, trauma and negative life events. Specifically, we examined the relationships between cognitive schemata (safety, self- and other esteem, intimacy, and trust) and three dimensions of physical and sexual assault histories (recentness, frequency, and variety) among 91 predominantly African American, episodically homeless, seriously mentally ill women. Findings indicated that even in the context of pervasive violence, more frequent, recent, and varied abuse was associated with more negative cognitive schemata. We discuss these findings in the context of research and practice with disenfranchised populations at high risk for violent victimization.  相似文献   

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This article introduces the therapeutic contracting program as a comprehensive treatment system for persons with serious mental illness. Therapeutic contracting offers a promising framework for integrating medical, psychological, and social therapies in a manner that fosters clients' active involvement in treatment. This article outlines a multistage therapy program that mobilizes clients' adaptational resources through environmental interventions, structured goal-setting exercises, and skills-building experiences. Data illustrate the effectiveness of therapeutic contracting for (a) securing clients' treatment compliance, (b) promoting positive clinical outcomes, and (c) reducing overall treatment costs. The therapeutic contracting model is discussed as a potential vehicle for expanding the professional role of psychologists in psychiatric settings, particularly in areas of clinical and administrative decision making. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

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This chapter provides an overview of interventions for relatives of severely mentally ill individuals. The author discusses the design and use of these interventions in the context of the cultural characteristics of families and providers, as well as the culture of the interventions themselves.  相似文献   

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This study examined the efficacy of task analysis training for case managers helping seriously mentally ill patients find roommates and housing. Behavioral objectives and task analysis were used to develop the task-oriented behavioral training program. Case managers were trained to use a checklist for every session with patients, which included the goal of the session, tasks required to accomplish that goal and lists of all the sub-tasks. The results of this study suggest that this methodology: (1) reduced the time required for patients to find roommates and housing; (2) increased the percentage of patients finding housing; and (3) decreased hospitalization rates occurring during the process of looking for roommates and housing.  相似文献   

6.
OBJECTIVES: The study examined relationships between specific treatment elements and their costs and ten outcome measures using data from a longitudinal outcome study of a Veterans Affairs program for homeless mentally ill veterans. METHODS: Baseline and outcome data over an eight-month period were analyzed for 406 homeless veterans with psychiatric and substance use disorders who were treated in VA's Homeless Chronically Mentally Ill Veterans Program. Multivariate techniques were used to examine the relationship between ten measures of outcome and six treatment elements: program entry via community outreach, the number of contacts with program clinicians, the number of referrals for other services, duration of program involvement, number of days of residential treatment, and increased public support payments. RESULTS: Each of the six treatment elements was significantly related to improvement on at least one of the ten outcome measures. The number of clinical contacts with program staff and the number of days in residential treatment were associated with improvement in the greatest number of outcome domains. However, improvement associated with residential treatment was far more costly than improvement related to other treatment elements. CONCLUSION: This study provides evidence of the effectiveness of a multimodal approach to the treatment of homeless mentally ill persons. However, results indicate that special attention should be paid to to differences in the cost of improvement associated with various treatment elements.  相似文献   

7.
The authors review the research literature for estimates of the prevalence of HIV infection among the seriously mentally ill. Data from nine studies suggest that 4%–23% of the seriously mentally ill have been infected with the virus that causes AIDS. Men have been infected at a higher rate than have women, but this gender difference is less pronounced than that found in the general population. Because most of these blinded seroprevalence studies have been conducted in New York City, the representativeness of these results remains unknown. Nonetheless, the findings call attention to the need for enhanced HIV-related services for the seriously mentally ill. The authors provide screening and counseling guidelines for practitioners who work with seriously mentally ill clients. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

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The seriously ill or dying analyst and the limits of neutrality.   总被引:1,自引:0,他引:1  
Discusses a major dilemma that confronts the analyst who suffers from a prolonged or terminal illness. How much factual information should be revealed to patients concerning the illness and the prognosis? The impact of the illness on communications with the patient (e.g., how appointments are canceled) is explored. Discussion focuses on accounts by 4 analysts who suffered serious illnesses and wrote about their experiences. Transference and countertransference issues are considered, followed by relevant references to neutrality—its uses and abuses—when serious illness strikes. It is argued that the analyst cannot hide behind the concept of neutrality to avoid facing the demands of unusual situations in the analytic experience. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

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We tested a nurse clinician-mediated intervention to relieve pain in a group of seriously ill hospitalized adults using a randomized controlled trial at five tertiary care academic centers in the US. The study included 4804 patients admitted between January 1992 and January 1994 with one or more of nine high mortality diagnoses; 2652 were allocated to the intervention and 2152 to usual care. Specially-trained nurse clinicians assessed patients' pain, educated them and their families about pain control, empowered patients to expect pain relief, informed patients' nurses and physicians about level of pain and suggested or used other pain management resources. Patients' pain was determined from hospital interviews with patients and surrogates. Pain 2 and 6 months later or after death and satisfaction with its control at all time periods were also assessed. All analyses were adjusted for baseline risk of being in pain and propensity to be in the intervention group. Overall, 50.9% of patients reported some pain. After adjustment for other variables associated with pain, comparing the intervention to the control group, there was not a statistically significant difference in level of pain (OR for higher levels of pain 1.15; CI 1.00-1.32) or satisfaction with control of pain during the hospitalization (OR for higher levels of pain 1.12; CI 0.91-1.39), 2 or 6 months after discharge, or during the last 3 days of life. A multifaceted intervention using information, empowerment, advocacy, counseling and feedback was ineffective in ameliorating pain in seriously ill patients. Control of pain in these patients remains an important problem. More intensive pain treatment strategies addressing the needs of seriously ill hospitalized adults must be evaluated.  相似文献   

15.
Data from 900 community college students indicate that labeling, including both the labels themselves and the labelers, has no significant independent effect on the attributes imputed to a labeled individual, although it may produce some effects in interaction with other variables. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

16.
The present study compared the attitudes and feelings of law-enforcement, corrections, parole and probation personnel, and college students toward mental illness. Modified versions of the Criminally Insane Scale (Khanna, Pratt, & Gardiner, 1962) and Attitudes Toward Mental Illness Scale (Cohen & Struening, 1962) were used in assessing these attitudes. Law-enforcement and corrections personnel tended to believe many of the stereotypic causes of mental illness, while the college students based their views on more current thinking. In addition, law-enforcement and corrections personnel indicated greater fear of the criminally insane than the other two groups. Possible causes and ramifications of these differences are discussed.  相似文献   

17.
Are the unstable residential and personal lives of homeless mentally ill (HMI ) individuals so difficult as to preclude their inclusion in rigorous, longitudinal research protocols? The continued presence of HMI individuals in U.S. society has prompted the mental health research community to reconsider the question of whether clinical trial and demonstration research protocols are feasible with this population. This article briefly examines the existing research literature on recruitment and retention rates in recent studies of this population and, in more detail, the specific strategies used by researchers to recruit and retain HMI individuals as research participants. In general, with sufficient resources and the persistent use of existing strategies for recruitment and retention, HMI individuals can be successfully studied over time. Finally, to demonstrate this potential, the recruitment and retention strategies of the San Diego McKinney Homeless Mentally Ill Demonstration Research Program are described. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

18.
Describes problems faced by families of the mentally ill, particularly since the caregiving system in the US provides only incomplete solutions. Psychologists have provided important support to family members coping with seriously mentally ill relatives; however, psychology's response has been incomplete. Families have helped themselves in the initiation in 1979 of the National Alliance for the Mentally Ill (NAMI), an advocacy and education organization that originated as a network of mutual support groups. The history of communication between NAMI and the American Psychological Association (APA) is outlined. The need for "building bridges" between psychologists and families of the mentally ill resulted in 2 conferences between APA and NAMI. Other steps to enhance communication between psychologists and these families are listed, including communication with legislatures and the general public about public policy agendas on mental health services and research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

19.
Syrian hamsters, Mesocricetus auratus, were confined to novel running wheels for a 3-h period, starting at approximately circadian time (CT) 4.5 (i.e., approaching the middle of their subjective day). It can be reliably predicted from the amount of running in this situation whether or not there will be a subsequent phase-shift. Expression of the immediate early genes c-fos and fosB was examined by immunocytochemistry in the suprachiasmatic nucleus (SCN), the intergeniculate leaflet (IGL) of the thalamus, and the medial pretectal area of hamsters that ran vigorously in the novel wheel and would have phase-shifted. c-Fos was increased, compared to levels in a control group left in their home cages, in the IGL, and the pretectum (PT), but decreased in the SCN. No significant changes in FosB were detected in any region examined. An additional experiment argued against the possibility that the changes in c-Fos could be attributed to a rapid advance of the pacemaker to a different phase in the circadian cycle. Counts of c-Fos-positive cells in the IGL were similar in animals given pulses of running starting at CT 4.5 and starting at CT 12.5-16 (i.e., in the subjective night when they would have been active anyway). Altogether the results support the view that activation of the IGL is important in nonphotic clock resetting, and raise the possibility that the PT may also be involved in nonphotic resetting. However, the results also indicate that novelty-induced running does not alter c-Fos induction in a phase-specific manner in the IGL. The inhibition of c-Fos in the SCN by nonphotic phase-shifting events contrasts with the well-known inducing effects of light pulses. These different effects might underlie some of the interactions between nonphotic and photic zeitgebers when both act together on the circadian system.  相似文献   

20.
Most reports of polymedication among patients with chronic non-malignant pain have relied only on the patient's statements which have been proven to be unreliable regarding actual drug consumption. This study investigates the incidence of polymedication and medication compliance in these patients by applying objective methods. One-hundred-nine consecutive patients predominantly with facial, neuropathic or back pain were interviewed about present medication at first admission to the pain clinic. Reports were verified by toxicological urine screening, mainly with thin-layer chromatography (TLC) and gas chromatography-mass spectrometry (GC-MS) coupling. Follow-up investigations of 61 patients were conducted within 1 and 24 months after beginning therapy. Polymedication--here defined as daily intake of 3 or more preparations--was found in 41 patients (38%) in the initial investigation. In only 74 patients (68%) did the results of urine screening correspond with their reports: 23 patients (21%) concealed the consumption of drugs, and 2 patients (2%) did not take their medications. Ten cases were not interpretable. Fifty-four percent of the drugs concealed were psychotropic substances, mostly benzodiazepines, and 42% were analgesic combinations, partly with psychotropic additives. Drug intake was concealed significantly more often with polypharmacy which was occurring more frequently in patients with headache or facial pain, longer duration of pain, young age, psychiatric diagnosis and history of substance abuse. Patients with initial non-compliance were more likely to conceal drug consumption in follow-up investigations as well (P = 0.05). Therefore, screening for medication compliance in patients with chronic non-malignant pain is recommended, especially in those with the abovementioned risk factors.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

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