Kraepelin's Final Views on Dementia Praecox.
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ABSTRACT:
SUBMITTER: Kendler KS
PROVIDER: S-EPMC8673439 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:ImportanceThe behavioral and cognitive symptoms of severe psychotic disorders overlap with those seen in dementia. However, shared brain alterations remain disputed, and their relevance for patients in at-risk disease stages has not been explored so far.ObjectiveTo use machine learning to compare the expression of structural magnetic resonance imaging (MRI) patterns of behavioral-variant frontotemporal dementia (bvFTD), Alzheimer disease (AD), and schizophrenia; estimate predictability in patients with bvFTD and schizophrenia based on sociodemographic, clinical, and biological data; and examine prognostic value, genetic underpinnings, and progression in patients with clinical high-risk (CHR) states for psychosis or recent-onset depression (ROD).Design, setting, and participantsThis study included 1870 individuals from 5 cohorts, including (1) patients with bvFTD (n = 108), established AD (n = 44), mild cognitive impairment or early-stage AD (n = 96), schizophrenia (n = 157), or major depression (n = 102) to derive and compare diagnostic patterns and (2) patients with CHR (n = 160) or ROD (n = 161) to test patterns' prognostic relevance and progression. Healthy individuals (n = 1042) were used for age-related and cohort-related data calibration. Data were collected from January 1996 to July 2019 and analyzed between April 2020 and April 2022.Main outcomes and measuresCase assignments based on diagnostic patterns; sociodemographic, clinical, and biological data; 2-year functional outcomes and genetic separability of patients with CHR and ROD with high vs low pattern expression; and pattern progression from baseline to follow-up MRI scans in patients with nonrecovery vs preserved recovery.ResultsOf 1870 included patients, 902 (48.2%) were female, and the mean (SD) age was 38.0 (19.3) years. The bvFTD pattern comprising prefrontal, insular, and limbic volume reductions was more expressed in patients with schizophrenia (65 of 157 [41.2%]) and major depression (22 of 102 [21.6%]) than the temporo-limbic AD patterns (28 of 157 [17.8%] and 3 of 102 [2.9%], respectively). bvFTD expression was predicted by high body mass index, psychomotor slowing, affective disinhibition, and paranoid ideation (R2 = 0.11). The schizophrenia pattern was expressed in 92 of 108 patients (85.5%) with bvFTD and was linked to the C9orf72 variant, oligoclonal banding in the cerebrospinal fluid, cognitive impairment, and younger age (R2 = 0.29). bvFTD and schizophrenia pattern expressions forecasted 2-year psychosocial impairments in patients with CHR and were predicted by polygenic risk scores for frontotemporal dementia, AD, and schizophrenia. Findings were not associated with AD or accelerated brain aging. Finally, 1-year bvFTD/schizophrenia pattern progression distinguished patients with nonrecovery from those with preserved recovery.Conclusions and relevanceNeurobiological links may exist between bvFTD and psychosis focusing on prefrontal and salience system alterations. Further transdiagnostic investigations are needed to identify shared pathophysiological processes underlying the neuroanatomical interface between the 2 disease spectra.
| S-EPMC9350851 | biostudies-literature
Project description:In 1916, Ernst Rüdin published the first modern family study in the history of psychiatric genetics, the major goal of which was to test whether the pattern of risk in the siblings of dementia praecox (DP) probands followed Mendelian expectations. He utilized systematic ascertainment of probands and multisourced diagnostic assessments of probands and relatives, applying the narrow Kraepelinian concept of DP. In a novel step, he collaborated closely with a statistical geneticist-Wilhelm Weinberg-and applied his sibling, proband, and age correction methods. In his key sample-701 sibships when neither parent had DP-the morbid risk for DP in siblings was 4.48%, much lower than 25% expected for a recessive disorder. Risk for DP was increased by alcoholism or other mental disorders in parents. Other non-DP psychoses were common in both siblings and parents of DP probands. Rüdin discussed several alternative genetic models for DP including a 2-locus recessive, incomplete penetrance, and an oligogenic model. The high rates of other psychoses and psychopathic personalities in relatives might arise, he suggested, because these disorders shared genetic risks with DP. Rüdin established that DP, when carefully studied, ran in families, did not have a simple Mendelian genetic transmission pattern, and appeared likely to be genetically related to other non-DP psychotic disorders and perhaps some kinds of psychopathic personalities. This study, the most important in Rüdin's career, should be viewed in the context of his later extensive support of and collaboration with Nazi eugenic policies.
| S-EPMC9581072 | biostudies-literature
Project description:We can trace, with high congruence, the clinical syndromes of depression and mania as described over the 20th century in psychiatric textbooks back to 1880 and to the earliest writing of Kraepelin published in 1883. However, this is not the case for Kraepelin's 2 delusional syndromes central to his overall nosology: Dementia Paranoides (later paranoid schizophrenia) and Paranoia. A detailed examination of 28 textbook descriptions of delusional psychoses from 1880 to 1900 reveals a diverse and partially overlapping set of syndromes with an admixture of symptoms and signs that would later be considered indicative of Dementia Paranoides and Paranoia. A similar pattern in seen in Kraepelin's own description of "Primäre Verrücktheit" from the first edition of his textbook (1883). No clear prototypes emerged in these textbooks or in Kraepelin's early writings for the 2 distinct delusional syndromes that would later evolve in his mature writings. Rather, the nosologic approach taken in these writings was symptom based and assumed that a viable diagnostic category could be constituted by including all delusional patients once those suffering from organic or mood disorders were excluded. While Kraepelin used the historical syndromes of mania and depression, with no appreciable change, as building blocks for his category of manic-depressive insanity, his nosologic system for the psychotic disorders-the syndromes of Dementia Praecox and Paranoia-was more innovative and without clear precedent in the prior psychiatric literature.
| S-EPMC6403057 | biostudies-literature
Project description:Through a close reading of texts, this essay traces the development of catatonia from its origination in Kahlbaum's 1874 monograph to Kraepelin's catatonic subtype of his new category of Dementia Praecox (DP) in 1899. In addition to Kraepelin's second to sixth textbook editions, I examine the six articles referenced by Kraepelin: Kahlbaum 1874, Brosius 1877, Neisser 1887, Behr 1891, Schüle 1897, and Aschaffenburg 1897 (Behr and Aschaffenburg worked under Kraepelin). While Brosius and Neisser confirmed Kahlbaum's descriptions, Behr, Schüle, and Aschaffenburg concluded that his catatonic syndrome was nonspecific and only more narrowly defined forms, especially those with deteriorating course, might be diagnostically valid. Catatonia is first described by Kraepelin as a subform of Verrücktheit (chronic nonaffective delusional insanity) in his second to fourth editions. In his third edition, he adds a catatonic form of Wahnsinn (acute delusional-affective insanity). His fourth and fifth editions contain, respectively, catatonic forms of his two proto-DP concepts: Psychischen Entartungsprocesse and Die Verblödungsprocesse. Kahlbaum's catatonia required a sequential phasic course. Positive psychotic symptoms were rarely noted, and outcome was frequently good. While agreeing on the importance of key catatonic signs (stupor, muteness, posturing, verbigeration, and excitement), Kraepelin narrowed Kahlbaum's concept, dropping the phasic course, emphasizing positive psychotic symptoms and poor outcome. In his fourth to sixth editions, as he tried to integrate his three DP subtypes, he stressed, as suggested by Aschaffenburg and Schüle, the close clinical relationship between catatonia and hebephrenia and emphasized the bizarre and passivity delusions seen in catatonia, typical of paranoid DP.
| S-EPMC7147592 | biostudies-literature
Project description:Background: Behavioral and psychological symptoms of dementia (BPSD, also known as neuropsychiatric symptoms (NPS), changed behaviors and responsive behaviors), occur in up to 90 percent of people living with dementia (PLWD). These symptoms and behaviors strongly correlate with functional and cognitive impairment and contribute to ~30% of overall dementia costs. As decisions regarding care and strategies for BPSD are generally based on professional frames of reference, this study investigates whether the perspectives of PLWD and families/care partner on BPSD terminology can inform a more nuanced conceptualization of BPSD. Methods: PLWD and families/care partners participated in one-on-one semi-structured interviews. A thematic iterative approach was used to code the data and identify common themes until theoretical saturation was reached. Themes were compared between groups. Data were analyzed deductively in relation to pre-existing terminology regarding BPSD, and inductively to discover new ideas on use of such terminology as perceived by PLWD and others. Results: Forty-one volunteers were interviewed: 21 PLWD, mean age 71 yrs, mean Mini-Mental State Examination score 25, and 20 family members/care partners. Three main themes emerged from the data: (1) descriptions of BPSD from people with lived experience compared to clinical terms, (2) viewpoints on interpreting causes, and (3) experiences of concurrent BPSD. The experiences described and terms used by PLWD and families/care partners differed from terms used in existing professional frameworks (e.g., "disinhibition" described as 'loss of filter') and there were differences between PLWD and family members' interpretations of BPSD causes. Discussion/Conclusion: Reports from PLWD and families/carers describing their experiences of BPSD suggest a reconceptualization of BPSD terminology is needed to understand and de-stigmatize these symptoms and behaviors. For example, the term "agitated/hard to handle" would benefit by clearer, contextualized description, such as "frustrated with cognitive decline, discriminatory behavior and inadequate support systems." In better understanding individual expressions of BPSD, families, professionals and societies will be able to respond in ways that are helpful for PLWD. An informed, integrated understanding of BPSD and improved terminology use will have the potential to improve the quality of care and support for PLWD.
| S-EPMC8415310 | biostudies-literature
Project description:BackgroundMedical professionalism as a set of behaviours that transcends personal values, beliefs and attitudes to incorporate ethical and moral principles is considered a covenant between society and the practice of medicine. The Bachelor of Clinical Medical Practice (BCMP) a three year professional degree was launched at the University of the Witwatersrand in January 2009 in response to a documented shortage of doctors especially in the rural areas of South Africa. The BCMP programme is unique in its offering as it requires a teaching approach that meets the needs of an integrated curriculum, providing for an accelerated transition from the classroom to the patient's bedside.MethodsFollowing five week attachments in designated District Education Campuses, 25 final year BCMP students were required to reflect individually on the covenant that exists between society and the practice of medicine based on their daily interactions with health care workers and patients for three of the five rotations in a one page document. A retrospective, descriptive case study employed qualitative methods to group emerging themes from 71 portfolios. Ethical clearance was obtained from the Human Research Ethics Committee at the University of the Witwatersrand.ResultsAs an outcome of an ethical analysis, the majority of BCMP students reflected on the determinants of accountable and responsible practice (N=54). The commitment to the Oath became significant with a personalised reference to patients 'as my patients'. Students acknowledged professional health care workers (HCWs) who demonstrated commitment to core values of good practice as they recognised the value of constantly reflecting as a skill (n=51). As the students reflected on feeling like 'guinea pigs' (n=25) migrating through periods of uncertainity to become 'teachable learners', they made ethical judgements that demonstrated the development of their moral integrity. A few students felt vulnerable in instances where they were pressured into 'pushing the line'.ConclusionsThrough their portfolio narratives, BCMP students showed a willingness to shape their evolving journeys of moral growth and personal development. This study has highlighted as an ongoing challenge the need to identify a process by which professionalism is sustained by HCWs to benefit health sciences students.
| S-EPMC4107478 | biostudies-literature
Project description:The urgent need to expand enrollment in Alzheimer's disease and related dementia (ADRD) research has synergized calls for an empiric science of research recruitment, yet, progress in this area is hindered by challenges to measuring views toward ADRD research. This paper reports ethical and methodological considerations identified through a prospective qualitative study investigating ADRD patient and caregiver views on research recruitment and participation surrounding acute illness. Ethical and methodological considerations were identified through a combination of memoing, collaboration with a Community Advisory Board (CAB), and analysis of interview data from ADRD patients (N = 3) and/or caregivers (N = 28). These included risk for undue influence attributable to role ambiguity/motivational misconceptions, divergent decision-making preferences, bias contributing to low referrals of ADRD participants, and difficulty answering abstract/hypothetical questions. Many considerations were successfully addressed with multifaceted, proactive strategies, and CAB input. Findings have implications for recruitment science research and the validity of inferences regarding research preferences.
| S-EPMC8035267 | biostudies-literature
Project description:BackgroundProviding a timely and accurate diagnosis of dementia and delivering appropriate support following a diagnosis are essential to allow individuals and their families to plan for the future. Recent studies suggest that provision of diagnosis and post-diagnosis support is suboptimal. This study explored geriatricians' views about strategies to improve quality of care across these domains.MethodsAn anonymous online survey of geriatricians and advanced trainees in one Australian state was conducted. An Expert Advisory Group of geriatricians, behavioural scientists and consumers proposed strategies to improve quality of care in relation to diagnosis and post-diagnosis support for people with dementia, which formed the survey items. Potential strategies were guided by, but not limited to, dementia and chronic care guidelines. Participants were asked the extent to which they agreed that implementing each of the proposed strategies would improve the quality of dementia care.ResultsOf 59 participants (response rate 42%), all agreed that improving accessibility of geriatricians would improve the accuracy and timeliness of diagnosis. Over 90% were supportive of strategies to improve capacity of general practitioners to accurately diagnose dementia. Between 97-100% agreed that information provided following diagnosis should encompass symptom progression, treatments, psychological supports, and advance care planning. Just over two-thirds thought that life expectancy should be discussed at this time. There were high levels of support for strategies already included in existing dementia care guidelines, however geriatricians also agreed with a range of possible strategies not currently included in guidelines.ConclusionsGeriatricians perceive that timeliness and accuracy of dementia diagnosis may be improved by increasing access to geriatricians and training general practitioners in diagnosing dementia. They also believe it is appropriate to provide information at the time of diagnosis across a comprehensive range of areas, including potentially sensitive topics such as advance care planning. Future studies should explore the views of other groups of health care providers and consumers about these approaches. The strategies proposed should be considered for inclusion in future dementia care guidelines.
| S-EPMC8858511 | biostudies-literature
Project description:ObjectivesTo explore the views of commissioners, service development leads, service managers and senior staff in selected dementia services on increasing the role of primary care in postdiagnostic support for people with dementia.DesignQualitative semi-structured telephone interviews and a focus group.SettingParticipants were drawn from National Health Service (NHS) Clinical Commissioning Groups, social care commissioning and a range of dementia services across primary care, secondary mental healthcare, social care and the third sector. All participants were based in England or Wales.Participants61 professionals, comprising 25 commissioners or service development leads; 25 service managers; and 11 team leads or senior staff.ResultsParticipants had varied views on whether a primary care-based approach for postdiagnostic support for people with dementia and their families was appropriate, achievable and/or desirable. Potential benefits of a task-shifted approach were continuity and a more holistic approach to care; familiarity for both patients and staff; and reduction of stigma. Key challenges included the capacity, ability and inclination of primary care to deliver postdiagnostic support for people with dementia and their families. We discovered a number of conceptual challenges to implementing a task-shifted and task-shared approach, including uncertainties around the nature of postdiagnostic support, the definition of primary care and identification of tasks that could be shifted to primary care.ConclusionsOur data highlight the concerns of key professional staff around greater involvement of primary care in postdiagnostic support for dementia. Further research is needed to achieve a shared understanding and consensus over what postdiagnostic support means in the context of dementia. We will be undertaking such research in the next phase of our programme.
| S-EPMC7507844 | biostudies-literature
