Untreated

未经处理
  • 文章类型: Journal Article
    高血压患者多久可以达到正常血压(BP)的缓解(即,<140/90mmHg)在没有抗高血压药物的情况下,这对高血压的管理很重要,仍然很大程度上未知。这项观察性研究旨在调查未服用抗高血压药物的老年高血压患者的BP变化,并初步检查在这种情况下观察到的从高血压到正常BP的缓解是否与心血管疾病(CVD)的风险降低有关。
    2760名33-99岁的参与者(中位数60岁,四分位54-68年),来自健康与退休研究(2006年至2018年)和英国老龄化纵向研究(1998年至2016年),没有严重心血管疾病的人,是高血压,并且在基线血压测量时没有服用抗高血压药物,至少有一次随访血压测量,之前没有服用抗高血压药物,被纳入分析。主要结果是在最后一波测量时达到高血压缓解的患者比例。
    在6年的中位随访期间,52%的参与者显示收缩压降低≥6mmHg,舒张压降低≥3mmHg60%。1171名参与者(42%,95%CI:41-44%)在最后一次测量时达到缓解,到那时,67%的人,43%,29%的人保持正常血压状态约4年、8年和12年,分别。旨在检查机会和偏见的影响的各种补充分析产生了类似的结果。初步分析显示,基线时不吸烟,在随访期间达到正常的体重指数,在随访期间戒酒,其中,与高血压的缓解有关。与保持高血压的参与者相比,获得缓解的患者的CVD风险较低(校正风险比0.66,95%CI:0.47~0.92).
    在许多本研究人群中,在诊断后的最初几年,高血压可以在没有药物治疗干预的情况下逆转。这一发现可能对高血压的更个性化管理有影响。有必要进一步研究以确定预测此类高血压缓解的因素或算法。
    香港中文大学(7106452;7105959),深圳市科技计划项目(KQTD20190929172835662),中国科学院战略优先研究计划(XDB38040200),国家老龄研究所(R01AG017644;NIAU01AG009740)。
    UNASSIGNED: How often hypertensive patients could achieve remission to normal blood pressure (BP) (i.e., <140/90 mmHg) in the absence of antihypertensive drugs, which is important for the management of hypertension, remains largely unknown. This observational study aimed to investigate the change of BP in older adults with hypertension who did not take antihypertensive drugs and preliminarily examine whether the remission from hypertension to normal BP observed in this setting was associated with lower risk of cardiovascular disease (CVD).
    UNASSIGNED: 2760 participants aged 33-99 years (median 60 years, interquartile 54-68 years) from the Health and Retirement Study (wave 2006 to wave 2018) and the English Longitudinal Study of Ageing (wave 1998 to wave 2016), who had no major CVD, were hypertensive, and were not on antihypertensive drugs at the time of baseline BP measurement, and had at least one follow-up BP measurement before which no antihypertensive drugs were taken, were included for analysis. The main outcome was the proportion of patients who achieved remission of hypertension at the last wave of measurement.
    UNASSIGNED: During a median follow-up of six years, 52% of the participants showed a reduction of ≥6 mmHg in systolic BP and 60% a reduction of ≥3 mmHg in diastolic BP. 1171 participants (42%, 95% CI: 41-44%) achieved remission at the last measurement, and by that time 67%, 43%, and 29% of them had maintained the normotensive state for around 4, 8, and 12 years, respectively. Various supplementary analyses that aimed to examine the impact of chance and bias yielded similar results. Preliminary analyses showed that being non-smokers at baseline, achieving a normal body mass index during follow-up, and quitting alcohol drinking during follow-up, among others, were associated with the remission of hypertension. Compared with the participants who remained hypertensive, those who achieved remission had a lower CVD risk (adjusted hazard ratio 0.66, 95% CI: 0.47-0.92).
    UNASSIGNED: In many of this study population, hypertension could be reversed without the intervention of drug treatment in the first few years after diagnosis. This finding may have implications for more individualized management of hypertension. Further studies to identify the factors or algorithms predictive of such hypertension remission are warranted.
    UNASSIGNED: The Chinese University of Hong Kong (7106452; 7105959),Shenzhen Science and Technology Program (KQTD20190929172835662), Strategic Priority Research Program of Chinese Academy of Sciences (XDB 38040200), National Institute on Aging (R01AG017644; NIA U01AG009740).
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  • 文章类型: Journal Article
    我们的目标是确定以下内容:(1)高血压(HTN)的患病率和社会经济分布,未诊断为HTN,和未经治疗的HTN诊断个体;(2)SES与HTN患病率之间的关系,未诊断为HTN,并且未经HTN治疗;(3)性别是否缓和了这种关联。使用2017-18年孟加拉国人口健康调查的数据。18岁或以上的11,776名参与者对我们的分析做出了回应。年龄调整后的HTN患病率,未诊断为HTN,未经治疗的病例为25.1%,57.2%,和12.3%。与女性相比,男性不太可能患有HTN,但更有可能患有未诊断的HTN。与贫穷的SES组相比,富裕的SES组中的人具有较高的HTN奇数(调整后的优势比[aoR]1.25;95%置信区间[CI]1.08-3.45)。与贫困SES组的个人相比,富SES组的HTN未诊断(aoR0.57;95%CI0.44-0.74)和未治疗(aoR0.56;95%CI0.31-0.98)的几率较低.性别调节了SES和HTN患病率之间的关联,这表明,来自富裕SES的男性比来自贫穷SES的男性更容易患HTN。根据这项研究,政府和其他相关利益相关者应更加集中精力制定适当的政策措施,以降低HTN的风险,特别是对于富有的社会经济群体的男性。他们还应该专注于在社会经济弱势群体中筛查和诊断HTN,不管性别。
    Our objectives were to ascertain the following: (1) the prevalence and socioeconomic distribution of hypertension (HTN), undiagnosed for HTN, and untreated cases of HTN-diagnosed individuals; (2) the relationship between SES and the prevalence of HTN, undiagnosed for HTN, and untreated for HTN; and (3) whether sex moderate this association. Data from the 2017-18 Bangladesh Demographic Health Survey were used. 11,776 participants who were 18 years of age or older responded to our analysis. The age-adjusted prevalence of HTN, undiagnosed for HTN, and untreated cases was 25.1%, 57.2%, and 12.3%. Compared to females, males were less likely to have HTN but more likely to have undiagnosed HTN. People in the rich SES groups had a higher odd of (adjusted odds ratio [aoR] 1.25; 95% confidence interval [CI] 1.08-3.45) of having HTN compared to those in the poor SES group. When compared to individuals in the poor SES group, those in the rich SES group had lower odds of undiagnosed (aoR 0.57; 95% CI 0.44-0.74) and untreated (aoR 0.56; 95% CI 0.31-0.98) for HTN. Sex moderated the association between SES and HTN prevalence, which showed that men from rich SES were more likely to suffer from HTN than men from poor SES. According to this study, the government and other pertinent stakeholders should concentrate more on developing suitable policy measures to reduce the risk of HTN, particularly for men in rich socioeconomic groups. They should also concentrate on screening and diagnosing HTN in socioeconomically disadvantaged populations, regardless of sex.
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  • 文章类型: Journal Article
    本研究旨在阐明社区心理健康外展服务开始时的治疗状态(未经治疗或已治疗)与服务强度之间的关联。
    这项回顾性队列研究是使用Tokorozawa市心理健康外展服务用户的数据进行的。服务开始时的治疗状态(暴露变量)和服务强度(结果变量)取自临床记录。进行泊松回归和线性回归分析。还计算了服务开始后12个月的医疗或社会服务使用频率。这项研究得到了国家神经病学和精神病学中心研究伦理委员会的批准(编号:A2020-081)。
    89人中,37(42%)未处理。与治疗组相比,未治疗组的家庭成员更可能成为服务的目标或接受者(b=0.707,p<0.001,Bonferroni-adjustedp<0.001)。与治疗组相比,未经治疗的组自己接受的服务较少(b=-0.290,p=0.005),电话服务也较少(b=-0.252,p=0.012);相比之下,他们在健康中心接受了更多的服务(b=0.478,p=0.031)和家庭支持(b=0.720,p=0.024),但这些显著差异在Bonferroni调整后消失。未治疗组中至少有11%的人在开始服务后12个月住院,35%的人门诊病人。
    家庭参与可能是未经治疗的人的关键服务组成部分。使用和不使用治疗的服务强度可能因服务位置而异。
    UNASSIGNED: This study aimed to clarify the association between treatment status (untreated or treated) at the start of community mental health outreach services and service intensity.
    UNASSIGNED: This retrospective cohort study was conducted using the Tokorozawa City mental health outreach service users\' data. Treatment status at the start of service (exposure variable) and the service intensity (outcome variables) were taken from clinical records. Poisson regression and linear regression analyses were conducted. The frequency of medical or social service use 12 months after service initiation was also calculated. This study was approved by the Research Ethics Committee at the National Center of Neurology and Psychiatry (No. A2020-081).
    UNASSIGNED: Of 89 people, 37 (42%) were untreated. Family members in the untreated group were more likely to be targets or recipients of services than in the treated group (b = 0.707, p < 0.001, Bonferroni-adjusted p < 0.001). Compared to the treated group, the untreated group received fewer services themselves (b = -0.290, p = 0.005), and also fewer services by telephone (b = -0.252, p = 0.012); by contrast, they received more services at the health center (b = 0.478, p = 0.031) and for family support (b = 0.720, p = 0.024), but these significant differences disappeared after Bonferroni adjustment. At least 11% of people in the untreated group were hospitalized and 35% were outpatients 12 months after service initiation.
    UNASSIGNED: Family involvement may be a key service component for untreated people. The service intensity with and without treatment may vary by service location.
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  • 文章类型: Journal Article
    精神分裂症被认为是一种以不同脑区之间的功能整合异常为特征的连接障碍。发现不同的脑连接异常与各种临床表现相关,但从未接受过任何药物治疗的首发患者是否会出现与临床症状和认知障碍相关的功能连接(FC)共同缺陷,目前尚不清楚.
    在大脑连接体中发现与精神病理学和认知表现有关的核心缺陷。
    共有75名首发精神分裂症患者和51名健康对照参与者接受了脑部扫描和行为临床评分。对症状和认知的临床评分进行主成分分析。在精神分裂症患者中发现的主要精神病理成分与静息状态FC之间进行了偏相关分析。
    使用主成分分析,第一主成分(PC1)解释了7个临床特征总方差的37%.GAF和BACS的评级对PC1有负面影响,而PANSS的评级,HAMD,HAMA做出了积极贡献。与PC1呈正相关的FC主要包括与脑岛相关的连接,前回,和一些额叶大脑区域。与PC1呈负相关的FCs主要包括左中扣带皮质与上枕中区域之间的连接。
    总而言之,我们发现FC的关联模式与首次发作精神分裂症的精神病理学和认知表现相关,其特征是与额叶和视觉皮层有关的连接障碍。这可能代表精神分裂症患者脑FC的核心缺陷。
    UNASSIGNED: Schizophrenia is considered to be a disorder of dysconnectivity characterized by abnormal functional integration between distinct brain regions. Different brain connection abnormalities were found to be correlated with various clinical manifestations, but whether a common deficit in functional connectivity (FC) in relation to both clinical symptoms and cognitive impairments could present in first-episode patients who have never received any medication remains elusive.
    UNASSIGNED: To find a core deficit in the brain connectome that is related to both psychopathological and cognitive manifestations.
    UNASSIGNED: A total of 75 patients with first-episode schizophrenia and 51 healthy control participants underwent scanning of the brain and clinical ratings of behaviors. A principal component analysis was performed on the clinical ratings of symptom and cognition. Partial correlation analyses were conducted between the main psychopathological components and resting-state FC that were found abnormal in schizophrenia patients.
    UNASSIGNED: Using the principal component analysis, the first principal component (PC1) explained 37% of the total variance of seven clinical features. The ratings of GAF and BACS contributed negatively to PC1, while those of PANSS, HAMD, and HAMA contributed positively. The FCs positively correlated with PC1 mainly included connections related to the insula, precuneus gyrus, and some frontal brain regions. FCs negatively correlated with PC1 mainly included connections between the left middle cingulate cortex and superior and middle occipital regions.
    UNASSIGNED: In conclusion, we found a linked pattern of FC associated with both psychopathological and cognitive manifestations in drug-naïve first-episode schizophrenia characterized as the dysconnection related to the frontal and visual cortex, which may represent a core deficit of brain FC in patients with schizophrenia.
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  • 文章类型: Editorial
    暂无摘要。
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  • 文章类型: Journal Article
    目标:赌博障碍很常见,影响了0.5%-2%的人口,并且治疗不足。在其他精神障碍的背景下,未经治疗的疾病持续时间(DUI)已成为临床上重要的概念,但是赌博障碍的DUI,几乎没有受到研究审查。
    方法:数据来自以前从未接受过任何治疗的人的赌博障碍临床试验。DUI被量化,和临床特征作为DUI状态的函数进行比较。
    结果:共纳入298人,平均DUI(标准偏差)为8.9(8.4)年,DUI的中位数为6年。较长的DUI与男性显著相关,年龄较大,当这个人第一次开始赌博时,和酒精使用障碍的家族史。更长的DUI与种族身份没有显着相关,赌博症状严重程度,目前抑郁或焦虑的严重程度,合并症,或残疾/功能。两组在退出临床试验的倾向上没有差异,与参与这些试验相关的总体症状改善也是如此。
    结论:这些数据表明,赌博障碍具有相对较长的DUI,并强调需要提高认识并促进对受影响和风险个体的早期干预。因为任何形式的早期赌博都与较长的酒后驾车密切相关,这凸显了需要更严格的立法和教育,以减少年轻人赌博的风险。
    Gambling disorder is common, affects 0.5-2% of the population, and is under-treated. Duration of untreated illness (DUI) has emerged as a clinically important concept in the context of other mental disorders, but DUI in gambling disorder, has received little research scrutiny.
    Data were aggregated from previous clinical trials in gambling disorder with people who had never previously received any treatment. DUI was quantified, and clinical characteristics were compared as a function of DUI status.
    A total of 298 individuals were included, and the mean DUI (standard deviation) was 8.9 (8.4) years, and the median DUI was 6 years. Longer DUI was significantly associated with male gender, older age, earlier age when the person first started to gamble, and family history of alcohol use disorder. Longer DUI was not significantly associated with racial-ethnic status, gambling symptom severity, current depressive or anxiety severity, comorbidities, or disability/functioning. The two groups did not differ in their propensity to drop out of the clinical trials, nor in overall symptom improvement associated with participation in those trials.
    These data suggest that gambling disorder has a relatively long DUI and highlight the need to raise awareness and foster early intervention for affected and at-risk individuals. Because earlier age at first gambling in any form was strongly linked to longer DUI, this highlights the need for more rigorous legislation and education to reduce exposure of younger people to gambling.
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  • 文章类型: Journal Article
    未经治疗的精神病(DUP)的持续时间是影响精神分裂症结局的重要可改变因素。印度缺乏关于未经治疗的精神分裂症与治疗精神分裂症的研究,值得进一步研究。
    这是一项在三级医院进行的为期2年的纵向研究。住院患者诊断为精神分裂症(N=116),年龄18-45岁,分为未治疗组和治疗组。诊断确认,严重性评估,和临床结果使用ICD-10标准,阳性和阴性综合征量表(PANSS),和临床总体印象(CGI)量表。在12周和24周进行随访。DUP被测量,并评估其与结果的关联。
    最终分析包括100名患者,先前未处理和处理的各50个。未经治疗的患者年龄和病程(DOI)较低,但DUP更高(p<.001)。接受治疗的患者在12周时显示CGI-I有很大改善(p=0.029),在24周没有区别。PANSS严重程度比较显示无差异,这两个群体都有下降的趋势。在未经治疗的患者中,在所有随访中,发病年龄(AoO)与严重程度(基线时的一般症状除外)呈负相关(\'r\'范围=-0.32至-0.49,p<0.05),12周时DOI与阴性症状和一般症状呈正相关(r~0.3,p<0.05)。接受治疗的患者AoO和PANSS之间的负相关不一致且较低,严重程度和DOI之间没有相关性。平均样本DUP为17.9±31.6周;在所有随访中,它与教育程度呈负相关(r=-0.25,p=0.01),与PANSS严重程度呈正相关(\'r\'范围=0.22至0.30,p<.05),尤其是阴性症状。在24周时CGI无改善或改善最小的患者具有较高的DUP(Quade的ANOVAF[1,98]=6.24,p=.014)。
    未经治疗的精神分裂症的疾病变量会影响严重程度,比治疗精神分裂症延迟了改善。较高的DUP与精神分裂症的阴性症状有关。
    UNASSIGNED: Duration of untreated psychosis (DUP) is an important modifiable factor affecting schizophrenia outcomes. A dearth of research in India on untreated versus treated schizophrenia warrants further research.
    UNASSIGNED: This was a longitudinal study in a tertiary hospital over 2 years. Inpatients diagnosed with schizophrenia (N = 116), aged 18-45, were divided into untreated and treated groups. Diagnostic confirmation, severity assessment, and clinical outcome were done using ICD-10 criteria, Positive and Negative Syndrome Scale (PANSS), and Clinical Global Impression (CGI) scale. Follow-up was done at 12 and 24 weeks. DUP was measured, and its association with the outcome was assessed.
    UNASSIGNED: Final analysis included 100 patients, 50 each of previously untreated and treated. Untreated patients had lower age and duration of illness (DOI), but higher DUP (p < .001). Treated patients showed much improvement on CGI-I at 12 weeks (p = .029), with no difference at 24 weeks. PANSS severity comparison showed no difference, and both groups followed a declining trend. In untreated patients, age of onset (AoO) was negatively correlated with severity (except general symptoms at baseline) at all follow-ups (\'r\' range = -0.32 to -0.49, p < .05), while DOI showed a positive correlation with negative and general symptoms at 12 weeks (r ~ 0.3, p < .05). Treated patients showed inconsistent and lower negative correlation between AoO and PANSS, with no correlation between severity and DOI. The mean sample DUP was 17.9 ± 31.6 weeks; it negatively correlated with education (r = -0.25, p = .01) and positively with PANSS severity (\'r\' range = 0.22 to 0.30, p < .05) at all follow-ups, especially negative symptoms. Patients with no or minimal improvement on CGI at 24 weeks had higher DUP (Quade\'s ANOVA F[1,98] = 6.24, p = .014).
    UNASSIGNED: Illness variables in untreated schizophrenia affect severity, which has delayed improvement than treated schizophrenia. Higher DUP is associated with negative symptoms of schizophrenia.
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  • 文章类型: Journal Article
    从治疗的结肠直肠癌(CRC)收获的具有无细胞粘蛋白的淋巴结被分期为pN0。然而,病理学家之间存在差异,同时报告pN阶段时,未治疗的CRC节点内发现无细胞粘蛋白。虽然UICC指南建议将其分期为pN1,但AJCC和CAP未提供任何建议。为了表征其临床病理特征和结果,我们比较了16个未治疗的CRC(研究组;平均年龄:68岁),其中淋巴结有无细胞粘蛋白,与34pN0和25pN1未治疗的CRC对照.所有肿瘤均为单灶;12例(75%)为右侧病变。大多数病例(75%)显示一个无细胞粘蛋白结节(范围:1-3)。与pN0(33%;p=0.006)和pN1对照(8%;p<0.001)相比,MMR缺陷型肿瘤在研究组(83%)中明显更常见。与pN1对照组相比,研究组患者的总生存期更接近pN0;然而,这一差异无统计学意义.总之,未经治疗的CRC,在淋巴结内含有无细胞粘液蛋白,通常表现为右侧,MMR缺陷型肿瘤在老年妇女中表现出非粘液性表型。虽然案件数量有限,使我们无法就分期提出任何正式建议,我们建议,在淋巴结中发现无细胞粘蛋白应促使评估更深层次的水平(有或没有细胞角蛋白免疫组织化学),并提交所有结肠周围脂肪以进行额外的淋巴结收获.未经治疗的CRC节点中的无细胞粘蛋白是否与疾病的惰性生物学有关,强烈的局部免疫反应或MMR缺陷需要进一步研究.
    Lymph nodes with acellular mucin harvested from treated colorectal cancers (CRC) are staged as pN0. However, there is variability among pathologists while reporting the pN stage when acellular mucin is found within nodes of untreated CRCs. While the UICC guidelines suggest staging them as pN1, the AJCC and CAP do not offer any recommendations. In order to characterize their clinicopathologic features and outcome, we compared 16 untreated CRCs (study group; mean age: 68 years) harboring nodes with acellular mucin with 34 pN0 and 25 pN1 untreated CRC controls. All tumors were unifocal; 12 (75%) were right-sided lesions. Most cases (75%) showed one node with acellular mucin (range: 1-3). MMR-deficient tumors were significantly more common in the study group (83%) compared to pN0 (33%; p = 0.006) and pN1 controls (8%; p < 0.001). The overall survival of study group patients was closer to pN0 compared to pN1 controls; however, this difference was not statistically significant. In conclusion, untreated CRC that harbor acellular mucin within lymph nodes commonly present as right-sided, MMR-deficient tumors in older women that show a non-mucinous phenotype. While the limited number of cases precludes us from making any formal recommendations about staging, we suggest that the finding of acellular mucin in a node should prompt evaluation of deeper levels (with or without cytokeratin immunohistochemistry) and submission of all pericolonic fat for additional lymph node harvest. Whether acellular mucin in nodes of untreated CRCs is related to the indolent biology of the disease, a robust local immune response or MMR deficiency requires further investigation.
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  • 文章类型: Journal Article
    Phenylketonuria (PKU) is an inborn error of metabolism caused by variants in the phenylalanine hydroxylase (PAH) gene and it is characterized by excessively high levels of phenylalanine in body fluids. PKU is a paradigm for a genetic disease that can be treated and majority of developed countries have a population-based newborn screening. Thus, the combination of early diagnosis and immediate initiation of treatment has resulted in normal intelligence for treated PKU patients. Although PKU is a monogenic disease, decades of research and clinical practice have shown that the correlation between the genotype and corresponding phenotype is not simple at all. Attempts have been made to discover modifier genes for PKU cognitive phenotype but without any success so far. We conducted whole genome sequencing of 4 subjects from unrelated non-consanguineous families who presented with pathogenic mutations in the PAH gene, high blood phenylalanine concentrations and near-normal cognitive development despite no treatment. We used cross sample analysis to select genes common for more than one patient. Thus, the SHANK gene family emerged as the only relevant gene family with variants detected in 3 of 4 analyzed patients. We detected two novel variants, p.Pro1591Ala in SHANK1 and p.Asp18Asn in SHANK2, as well as SHANK2:p.Gly46Ser, SHANK2:p.Pro1388_Phe1389insLeuPro and SHANK3:p.Pro1716Thr variants that were previously described. Computational analysis indicated that the identified variants do not abolish the function of SHANK proteins. However, changes in posttranslational modifications of SHANK proteins could influence functioning of the glutamatergic synapses, cytoskeleton regulation and contribute to maintaining optimal synaptic density and number of dendritic spines. Our findings are linking SHANK gene family and brain plasticity in PKU for the first time. We hypothesize that variant SHANK proteins maintain optimal synaptic density and number of dendritic spines under high concentrations of phenylalanine and could have protective modifying effect on cognitive development of PKU patients.
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  • 文章类型: Journal Article
    在艾滋病的SIV/猕猴模型中,SIV群体在疾病进展期间的动态性质以及导致其行为的因素尚未被记录,主要是由于缺乏足够的空间和时间采样的病毒和宿主数据从SIV感染的动物。在这项研究中,我们详细介绍了贝叶斯合并推断,即在感染过程中,来自各种组织的总体宿主内病毒有效种群大小(Ne)的变化及其与我们所证明的血液中免疫细胞库不断变化的关系.尽管这些因素的相对贡献在宿主和时间点之间有所不同,适应性免疫反应最好地解释了有效病毒群体的整体周期性动态行为。揭示病毒和免疫细胞群体之间关系性质的数据揭示了生态进化数学模型的合理性,它能够通过相对较少的病毒逃逸来模拟Ne的大规模振荡,早期免疫显性反应,其次是缓慢逃离几个优势和减弱的免疫群体。这项研究的结果表明,未经处理的宿主内的SIV多样性受捕食者-猎物关系的支配,其中感染的不同阶段是对不同免疫应答的适应的结果。以前使用序列数据对病毒种群动态的研究集中在有效病毒种群大小(Ne)的单个估计或稀疏采样数据的点估计上,以深入了解免疫选择对病毒适应性行为的精确影响。在这里,我们描述了使用合并系统发育框架来估计Ne随时间的相对变化,以便量化与宿主动态免疫组成的经验数据的关系。这种关系使我们能够扩展早期的模拟,以建立一个捕食者-猎物模型,该模型解释了病毒在疾病进展过程中的确定性行为。我们表明,连续的病毒适应可以发生在不同的免疫压力阶段的反应,提供了在整个艾滋病发展过程中病毒反应的更广泛的图片。
    The dynamic nature of the SIV population during disease progression in the SIV/macaque model of AIDS and the factors responsible for its behavior have not been documented, largely owing to the lack of sufficient spatial and temporal sampling of both viral and host data from SIV-infected animals. In this study, we detail Bayesian coalescent inference of the changing collective intra-host viral effective population size (Ne ) from various tissues over the course of infection and its relationship with what we demonstrate is a continuously changing immune cell repertoire within the blood. Although the relative contribution of these factors varied among hosts and time points, the adaptive immune response best explained the overall periodic dynamic behavior of the effective virus population. Data exposing the nature of the relationship between the virus and immune cell populations revealed the plausibility of an eco-evolutionary mathematical model, which was able to mimic the large-scale oscillations in Ne through virus escape from relatively few, early immunodominant responses, followed by slower escape from several subdominant and weakened immune populations. The results of this study suggest that SIV diversity within the untreated host is governed by a predator-prey relationship, wherein differing phases of infection are the result of adaptation in response to varying immune responses. Previous investigations into viral population dynamics using sequence data have focused on single estimates of the effective viral population size (Ne ) or point estimates over sparse sampling data to provide insight into the precise impact of immune selection on virus adaptive behavior. Herein, we describe the use of the coalescent phylogenetic frame- work to estimate the relative changes in Ne over time in order to quantify the relationship with empirical data on the dynamic immune composition of the host. This relationship has allowed us to expand on earlier simulations to build a predator-prey model that explains the deterministic behavior of the virus over the course of disease progression. We show that sequential viral adaptation can occur in response to phases of varying immune pressure, providing a broader picture of the viral response throughout the entire course of progression to AIDS.
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