3,878 research outputs found
The pathogenesis of the anaerobic corynebacterium diphtheriae, anaerobic diphtheroid, and anaerobic leptothrix infections in relation to the psychoses, neuroses, and neurotoxic states, compared with 260 cases of symptomatic physical disorder (illustrated by 17 tables)
The subject of this thesis is the outcome of
what might be termed a 'hereditary interest' in the
complex problem of the relationship of chronic infections to the psychoses and allied mental disorders.
Circumstances enabled me, while still a student, to
undertake very humbly the continuation of my father's
researches in the Scottish Asylums' Laboratory at a
point where his illness and death mic:ht have proved
the closing of a long and arduous chapter. That this
would have been so is, as far as I know, borne out by
the fact that up to the present no work directly bearing
on his later bacteriological studies has been published.
The researches I have undertaken during the
past six rears have been an attempt to elucidate more
clearly what exactly are the bacteriological factors
at work, and, further, in what manner they attach the
economy generally, and with what result. In my endeavour to verify and extend Ford Robertson's views I
have been singularly fortunate.After nearly two years in the Laboratory of the
Scottish Asylums' I had the opportunity as honorary
Bacteriologist and Pathologist to the Southport Infirmary
and assistant to Dr E. Cronin Lowe, (consulting
pathologist and director of the Southport Infirmary laboratory) of studying a large number of private
and hospital patients during the course of two years
work. In addition to undertaking bacteriological research
by anaerobic methods, it fell to me to organise
a pathological clinique, the object of which was to
aid the physician in the diagnosis and treatment of
obscure physical disorders by the method of a "diagnostic
survey". The scheme evolved necessitated a
sz stematic study of each patient by haematological an
biochemical tests including functional efficiency
tests such as the glucose tolerance and fractional
test meal. Each case was also studied with a view to
discovering if possible some underlying bacteriological
infective condition which might have a bearing upon
the state of the patient. In the course of undertaking
a large number of patients by this method of approach
some fifteen mental and borderland cases came
under review. In many instances I was much struck by
their similarity to control patients in the underlying
physical disturbance found, and, while in this
respect there was something in common, it was striking
to note in some of the borderland, and certainly
in those who were definitely, mental, the absence of
clinical symptomatology, in spite of the fact that
they showed more gross functional physical disorder
on the average than did the non-mental cases. In
gastric disorders for example non-mental patients,
almost without exception, gave a clear clinical history
referrible to that organ. In two mental patient
however no such evidence past or present was ascertainable,
although both were found to be suffering
from severe gastritis and disordered secretory function.
Exceptional as these two cases may appear to b
this experience, which has been by no means confined
to the gastric mechanism, has been enormously
amplified by the work I have carried out since then.
In the study of the bacteriological flora, especially
of the intestine, there were bacterial elements common
to the majority of the fifteen cases which, on
the other hand, were relatively infrequently met with
in ordinary hospital patients. This fact further impressed
itself upon me when it had to be realised
that these additional infective factors were in every
respect similar to those so commonly seen in the course of routine bacteriological work at the Scottish
Asylums Laboratory. This evidence I believed at the
time formed a valuable link which, if opportunity
offered, might result in a chain of facts establishing
the importance of this group of bacteria.Early in November, 1927, the New Reception hospital, (Wantage House), of St Andrews, Northampton, was
opened, and I was offered the opportunity of organising
the very work which had been begun amongst cases
of mental disorder at the Southport Infirmary. It is
not often one is fortunate enough to start from the
foundation a scheme of research with a limited number
of patients whose whole care clinically and scientifically
comes within one's own province. Further,
the facilities afforded in each department are those
of the best equipped modern general hospital in miniature, a fact which has very materially contributed,
not only to the extension of research, but to the
correlation as far as my knowledge has permitted, of
the wide range of facts and observations that have
been collected in the course of nearly three years.By experience of the value both scientific and
therapeutic of the diagnostic survey method of research
led me to adopt it in an extended. form on all cases
admitted to ':Vantage House. The following is a brief
outline of t' :e scheme of research which up to the
present has been undertaken on 155 patients, 137 of
whom presented definite mental disorders.(1) Systematic physical examination including blood
pressure, central nervous system, teeth, etc.
(2) Examination of upper respirator- passages for
evidence of focal infection.
(3) Laboratory tests.
a. Cytology of the blood.
b. Biochemical examination of the blood. Non-protein nitrogen, CO₂, calcium, Van-den-Bergh,
and phosphates.
c. Gastric analysis by fractional method.
d. Glucose tolerance.
e. Urine, 24 hrs. sample. Biochemical qualitative
and quantitative: examinations and cytological.
f. Intestinal content. Chemical and microscopical.
g. Cerebro-spinal fluid. Cytological, biochemical
qualitative and quantitative in about 1/4 of the
cases.
(4) Bacteriological examinations of the foci
throughout the alimentary canal in all cases by
the anaerobic methods given in this thesis. Pelvic
organs and accessory sinuses in some.
(5) Radiography. Teeth and accessory sinuses in all
cases, and gastro-intestinal tract in some.
(6) The study of the psychological aspects past and
present of each case, especially in relation to
heredity, environment, and past physical disorder
The above tests have been repeated as circumstances
demanded and, with the exception of the gastric
analysis and glucose tolerance, are carried out again
case it has been possible,under ideal circumstances
of observation and control, to study and where possible
correlate the mental symptoms with the underlying physical disorders. The main outlines of this
scheme and the circumstances that led up to its inception have been mentioned so that those whose position
it is to criticise and judge should know that the
basis of this thesis has been a wide one and that the
views expressed therein have been given without conscious
bias and in the hope that others may be stimulated
to carry out similar researches
Researches upon the pathology of subdural membrane formation
Preliminary note |
Literature upon subdural membranes |
Review of literature upon subdural membranes |
Note on the structure and functions of the dura mater |
Description of the naked-eye and microscopic appearances presented by the dura mater in a
series of asylum and general hospital cases |
Author's conclusions |
I. The naked-eye anatomy of subdural membranes and allied conditions. |
II. The morbid appearances which may be observed in superficial horizontal sections of the
dura mater. |
1. Morbid changes in the endothelial elemerits'of the dura. |
2. Phenomena following effusion of blood upon the internal surface of the dura. |
3. Morbid changes in the superficial vessels of the dura. |
4. Hyaline changes. |
5. Concentric bodies. |
6. Mulberry bodies. |
7. Granular patches in the fibrous tissue, |
8. Granulations. |
III. The morbid processes concerned in subdural membrane formation. |
Illustrations. |
Description of the illustrations. |
Microscopic specimens
Top ten risk factors for morbidity and mortality in patients with chronic systolic heart failure and elevated heart rate: the SHIFT risk model
Aims
We identified easily obtained baseline characteristics associated with outcomes in patients with chronic heart failure (HF) and elevated heart rate (HR) receiving contemporary guideline-recommended therapy in the SHIFT trial, and used them to develop a prognostic model.
Methods
We selected the 10 best predictors for each of four outcomes (cardiovascular death or HF hospitalisation; all-cause mortality; cardiovascular mortality; and HF hospitalisation). All variables with p < 0.05 for association were entered into a forward stepwise Cox regression model. Our initial analysis excluded baseline therapies, though randomisation to ivabradine or placebo was forced into the model for the composite endpoint and HF hospitalisation.
Results
Increased resting HR, low ejection fraction, raised creatinine, New York Heart Association class III/IV, longer duration of HF, history of left bundle branch block, low systolic blood pressure and, for three models, age were strong predictors of all outcomes. Additional predictors were low body mass index, male gender, ischaemic HF, low total cholesterol, no history of hyperlipidaemia or dyslipidaemia and presence of atrial fibrillation/flutter. The c-statistics for the four outcomes ranged from 67.6% to 69.5%. There was no evidence for lack of fit of the models with the exception of all-cause mortality (p = 0.017). Similar results were found including baseline therapies.
Conclusion
The SHIFT Risk Model includes simple, readily obtainable clinical characteristics to produce important prognostic information in patients with chronic HF, systolic dysfunction, and elevated HR. This may help better calibrate management to individual patient risk.</p
Long-term impact on healthcare resource utilization of statin treatment, and its cost effectiveness in the primary prevention of cardiovascular disease: a record linkage study
Aims: To assess the impact on healthcare resource utilization, costs, and quality of life over 15 years from 5 years of statin use in men without a history of myocardial infarction in the West of Scotland Coronary Prevention Study (WOSCOPS).<p></p>
Methods: Six thousand five hundred and ninety-five participants aged 45–54 years were randomized to 5 years treatment with pravastatin (40 mg) or placebo. Linkage to routinely collected health records extended follow-up for secondary healthcare resource utilization to 15 years. The following new results are reported: cause-specific first and recurrent cardiovascular hospital admissions including myocardial infarction, heart failure, stroke, coronary revascularization and angiography; non-cardiovascular hospitalization; days in hospital; quality-adjusted life years (QALYs); costs of pravastatin treatment, treatment safety monitoring, and hospital admissions.<p></p>
Results: Five years treatment of 1000 patients with pravastatin (40 mg/day) saved the NHS £710 000 (P < 0.001), including the cost of pravastatin and lipid and safety monitoring, and gained 136 QALYs (P = 0.017) over the 15-year period. Benefits per 1000 subjects, attributable to prevention of cardiovascular events, included 163 fewer admissions and a saving of 1836 days in hospital, with fewer admissions for myocardial infarction, stroke, heart failure and coronary revascularization. There was no excess in non-cardiovascular admissions or costs (or in admissions associated with diabetes or its complications) and no evidence of heterogeneity of effect over sub-groups defined by baseline cardiovascular risk.<p></p>
Conclusion: Five years' primary prevention treatment of middle-aged men with a statin significantly reduces healthcare resource utilization, is cost saving, and increases QALYs. Treatment of even younger, lower risk individuals is likely to be cost-effective.<p></p>
The Center for Adventist Research at Andrews University
The Center for Adventist Research (CAR), an Andrews University and General Conference of Seventh-day Adventist organization, seeks to promote an understanding and appreciation of the heritage and mission of the Seventh-day Adventist Church (SDA). It combines the resources of the James White Library’s Adventist Heritage Center and the Ellen G. White Estate Branch Office to provide the most extensive collection of Adventist-related resources in the world, both physically and digitally. An introduction to the background, collections, and activities of CAR is presented. Of particular interest are the digitization projects
Effect of visit-to-visit variation of heart rate and systolic blood pressure on outcomes in chronic systolic heart failure: results from the Systolic Heart Failure Treatment With the If Inhibitor Ivabradine Trial (SHIFT) trial
Background:
Elevated resting heart rate (HR) and low systolic blood pressure (SBP) are related to poor outcomes in heart failure (HF). The association between visit-to-visit variation in SBP and HR and risk in HF is unknown.
Methods and Results:
In Systolic Heart Failure Treatment with the If inhibitor ivabradine Trial (SHIFT) patients, we evaluated relationships between mean HR, mean SBP, and visit-to-visit variations (coefficient of variation [CV]=SD/mean×100%) in SBP and HR (SBP-CV and HR-CV, respectively) and primary composite endpoint (cardiovascular mortality or HF hospitalization), its components, all-cause mortality, and all-cause hospitalization. High HR and low SBP were closely associated with risk for primary endpoint, all-cause mortality, and HF hospitalization. The highest number of primary endpoint events occurred in the highest HR tertile (38.8% vs 16.4% lowest tertile; P<0.001). For HR-CV, patients at highest risk were those in the lowest tertile. Patients in the lowest thirds of mean SBP and SBP-CV had the highest risk. The combination of high HR and low HR-CV had an additive deleterious effect on risk, as did that of low SBP and low SBP-CV. Ivabradine reduced mean HR and increased HR-CV, and increased SBP and SBP-CV slightly.
Conclusions:
Beyond high HR and low SBP, low HR-CV and low SBP-CV are predictors of cardiovascular outcomes with additive effects on risk in HF, but with an unknown effect size. Beyond HR reduction, ivabradine increases HR-CV. Low visit-to-visit variation of HR and SBP might signal risk of cardiovascular outcomes in systolic HF.
Clinical Trial Registration:
URL: http://www.isrctn.com/. Unique identifier: ISRCTN70429960
Most Americans are now opposed to laws against interracial marriage, but their behavior does not yet reflect these attitudes
Recent decades have seen a dramatic fall in the number of people that support laws which prohibit interracial marriages, and an increase in the number of these marriages. But why does the rate of interracial marriages remain so low, when compared to same-race marriages? Using national data from the past three decades, Ginny E. Garcia, Richard Lewis Jr., and Joanne Ford-Robertson show that while attitudes towards interracial marriages have changed, many groups still have negative attitudes towards Black-White unions. They find that those who perceive social and economic competition with Blacks, such as those with lower levels of education, were more likely to support laws that prohibit interracial marriages and engage in behaviors that prevent Black’s wider participation in society
Psychometric and Faciometric Support for Observable Facial Feminization in Gay Men
Though male homosexuality appears to be evolutionarily paradoxical, phenotypic feminization has been offered as a route for three current models positing a genetic basis for male homosexuality. We tested whether facial feminization is observable in gay men in two studies. In Study 1, using two composite images of gay and of heterosexual men, naive participants (N = 308) rated the ‘gay’ face more highly on stereotypically feminine traits and actual femininity and the ‘heterosexual’ face more highly on stereotypically masculine traits and actual masculinity. In Study 2, faciometrics of 428 internet images of gay (N = 219) and heterosexual men were analyzed along six, sexually dimorphic ratios. The faciometrics of gay men were more feminine, both in gestalt terms, and for five of the six individual traits. The studies offer objective support for a more feminized facial phenotype in gay males that is difficult to explain through cultural or behavioral cues
An Empirically Derived Three-Dimensional Laplace Resonance in the Gliese 876 Planetary System
We report constraints on the three-dimensional orbital architecture for all
four planets known to orbit the nearby M dwarf Gliese 876 based solely on
Doppler measurements and demanding long-term orbital stability. Our dataset
incorporates publicly available radial velocities taken with the ELODIE and
CORALIE spectrographs, HARPS, and Keck HIRES as well as previously unpublished
HIRES velocities. We first quantitatively assess the validity of the planets
thought to orbit GJ 876 by computing the Bayes factors for a variety of
different coplanar models using an importance sampling algorithm. We find that
a four-planet model is preferred over a three-planet model. Next, we apply a
Newtonian MCMC algorithm to perform a Bayesian analysis of the planet masses
and orbits using an n-body model in three-dimensional space. Based on the
radial velocities alone, we find that a 99% credible interval provides upper
limits on the mutual inclinations for the three resonant planets
( for the "c" and "b" pair and for
the "b" and "e" pair). Subsequent dynamical integrations of our posterior
sample find that the GJ 876 planets must be roughly coplanar
( and ), suggesting the amount of
planet-planet scattering in the system has been low. We investigate the
distribution of the respective resonant arguments of each planet pair and find
that at least one argument for each planet pair and the Laplace argument
librate. The libration amplitudes in our three-dimensional orbital model
supports the idea of the outer-three planets having undergone significant past
disk migration.Comment: 19 pages, 11 figures, 8 tables. Accepted to MNRAS. Posterior samples
available at https://github.com/benelson/GJ87
The Impact of Age, Gender, Race, and Socioeconomic Indicators of Perceptions of Accepting Racially Diverse Members in the Family
This article explores the level of support when a family member chooses to marry a person from a different racial group. It investigates the role that race of the spouse plays along with selected demographic variables with respect to influencing marriage support attitudes. The differential assimilation hypothesis is employed as the theoretical foundation for guiding the statistical analysis. Information from the General Social Survey conducted in 2012 is used in the analytical. The findings demonstrated that when individuals decide to marry outside of their racial group, the racial background of the spouse has a major impact on family member acceptance. It was found that potential spouses from darker-skinned racial groups received less support for the union from family members. This research effort clearly highlighted color-grading as a social phenomenon and demonstrated the importance American society continues to place race and its role in social stratification
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