Uudet artikkelit 16.9.2005 - ISI
Web of Knowledge Search Alert
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Memory and verbal learning functions in twins with bipolar-I
disorder, and the role of information-processing speed.
Kieseppä, T; Tuulio-Henriksson, A; Haukka, J; Van
Erp, T; Glahn, D; Cannon, TD; Partonen, T; Kaprio, J;
Lönnqvist, J.
PSYCHOLOGICAL MEDICINE 35 (2): 205-215.
Background - Euthymic bipolar-I disorder (BP 1) patients and their
siblings have shown impairments in verbal learning and memory
functions compared with controls, suggesting that these impairments
may be genetic in origin. Reduced information-processing speed has
been associated with impaired memory in the elderly, and recently
in schizophrenia. The authors compared verbal learning and memory
functioning in twins with BP I and co-twins to control twins, and
examined whether the observed deficits are related to
information-processing speed.
Methods - Finnish Medical and Population Registers and Twin Cohorts
were used to identify the BP I and control twins.
Neuropsychological tests assessing verbal learning and memory,
working memory, facial recognition, visual memory, and
information-processing speed were administered to 26 BP I twins, 19
non-bipolar co-twins, and 114 controls. Group differences were
analyzed by generalized estimation equation modeling.
Results - BP I patients, but not co-twins, showed impairments in
all memory tests compared with controls. Female co-twins showed
impairment in verbal learning and memory. Information-processing
speed had a significant effect on encoding and learning
efficiency.
Conclusion - This study showed for the first time that
information-processing speed is related to memory functioning and
verbal learning in BP I in a population-based, representative and
euthymic sample. Furthermore, the data support the view that
defects in verbal memory may be related to the genetic factors
predisposing to BP I in females.
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Depressive disorders in primary care: recurrent,
chronic, and co-morbid
Vuorilehto, M; Melartin, T; Isometsä, E.
PSYCHOLOGICAL MEDICINE 35 (5): 673-682.
Background - Preceding longitudinal course and current somatic and
psychiatric co-morbidity of depression have been little
investigated in primary care.
Methods - Consecutive patients (n = 1111) in primary care in the
city of Vantaa, Finland, were screened for depression with the
PRIME-MD, and positive cases interviewed by telephone. Cases with
current depressive symptoms were diagnosed face-to-face with the
Structured Clinical Interview for DSM-IV Axis I Disorders
(SCID-I/P). A cohort of 137 patients with unipolar depressive
disorders, comprising all patients with at least two depressive
symptoms and clinically significant distress or disability, was
recruited. The Structured Clinical Interview for DSM-IV Axis II
Disorders (SCID-II), medical records, rating scales, and a
retrospective life-chart were used to obtain comprehensive
cross-sectional and longitudinal information.
Results - Current major depressive disorder (MDD) was the most
prevalent depressive disorder (66 %); it was usually mild to
moderate but recurrent. A quarter of cases (23 %) had MDD in
partial remission or prodromal phase, and only 10 % had true minor
depression. Axis I co-morbidity was present in 59 %, Axis 11 in 52
%, and chronic Axis III disorders in 47 %; only 12 % had no
co-morbidity. One third of patients presented with a psychological
complaint, predicted by higher depression severity and younger
age.
Conclusion - From a lifetime perspective, the majority of
primary-care patients with depressive disorders suffer from
recurrent MDD, although they are currently often in prodromal or
residual phase. Psychiatric and somatic co-morbidity are highly
prevalent. Treatment of depression in primary care should not rely
on an assumption of short-lived, uncomplicated mild
disorders.
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Mortality among patients with schizophrenia and
reduced psychiatric hospital care.
Heila, H; Haukka, J; Suvisaari, J; Lönnqvist, J.
PSYCHOLOGICAL MEDICINE 35 (5): 725-732.
Background - There are suggestions that mortality, especially that
due to suicide, increases among schizophrenia patients during a
period of declining psychiatric beds. We investigated the mortality
of schizophrenia patients in the general population of Finland
during the reduction of psychiatric beds during 1980-1996.
Method - Patients hospitalized for schizophrenia before 31 December
1996, and alive on I January 1980 (n = 58 76 1) were identified via
the National Hospital Discharge Register. General population data
came from the National Population Register, and mortality data from
the National Causes of Death Register. We calculated relative risks
(RR) for total mortality, mortality due to natural causes (cancer,
ischaemic heart disease, respiratory disease), unnatural causes
(accident, homicide, suicide), and suicide.
Results. Patients with schizophrenia had an increased mortality
both from natural causes (RR 2-59, 95 % CI 2-55-2-63) and from
suicide (RR 9-9, 95 % CI 9-43-10-30). The RR for both natural and
unnatural deaths was highest among patients with < 5 years since
onset of schizophrenia. Among them all-cause mortality rose in the
1990s, but decreased among patients with > 10 years from onset.
Otherwise no major changes or linear trends were found in mortality
during deinstitutionalization.
Conclusions. Reduction of psychiatric beds did not generally
increase the mortality of patients with schizophrenia. However,
patients in their early years of illness experienced increased
mortality after the steepest bed reduction. Improved recognition
and treatment of somatic illness would benefit patients with
schizophrenia.
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Sample type is crucial to the diagnosis of
Mycoplasma pneumoniae pneumonia by PCR.
Räty, R; Rönkkö, E; Kleemola, M.
JOURNAL OF MEDICAL MICROBIOLOGY 54 (3): 287-291.
Sensitive and specific methods for rapid laboratory diagnosis of
Mycoplasma pneumoniae were not available until nucleic acid
amplification methods were developed. The choice of sample type and
method of sampling are crucial to optimal diagnostic efficacy.
Three types of respiratory samples from 32 young military
conscripts with pneumonia were collected during an outbreak of M.
pneumoniae infection. Sputum, nasopharyngeal aspirate and throat
swab specimens were tested by 16S rRNA gene-based PCR with
liquid-phase probe hybridization, and the results were compared
with serology. The PCR result was positive for 22 (69%) of the
sputa, 16 (50%) of the aspirates and 12 (37(.)5%) of the swabs.
Serology with increasing or high titres supported the positive
findings in all instances. Sputum, when available, is clearly the
best sample type for young adults with pneumonia.
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Prevalence of drug-resistant HIV-1 variants in
untreated individuals in Europe: Implications for clinical
management.
Wensing, AMJ; van de Vijver, DA; Angarano, G; Asjo, B; Balotta, C;
Boeri, E; Camacho, R; Chaix, ML; Costagliola, D; De Luca, A;
Derdelinckx, I; Grossman, Z; Hamouda, O; Hatzakis, A; Hemmer, R;
Hoepelman, A; Horban, A; Korn, K; Kucherer, C; Leitner, T; Loveday,
C; MacRae, E; Maljkovic, I; de Mendoza, C; Meyer, L; Nielsen, C; de
Coul, ELO; Ormaasen, V; Paraskevis, D; Perrin, L;
Puchhammer-Stockl, E; Ruiz, L; Salminen, M; Schmit, JC; Schneider,
F; Schuurman, R; Soriano, V; Stanczak, G; Stanojevic, M; Vandamme,
AM; Van Laethem, K; Violin, M; Wilbe, K; Yerly, S; Zazzi, M;
Boucher, CA. SPREAD Programme.
JOURNAL OF INFECTIOUS DISEASES 192 (6): 958-966.
Background. Infection with drug-resistant human immunodeficiency
virus type 1 (HIV-1) can impair the response to combination
therapy. Widespread transmission of drug-resistant variants has the
disturbing potential of limiting future therapy options and
affecting the efficacy of postexposure prophylaxis.
Methods. We determined the baseline rate of drug resistance in 2208
therapy-naive patients recently and chronically infected with HIV-1
from 19 European countries during 1996-2002.
Results. In Europe, 1 of 10 antiretroviral-naive patients carried
viruses with >= 1 drug-resistance mutation. Recently infected
patients harbored resistant variants more often than did
chronically infected patients (13.5% vs. 8.7%; P = .006). Non-B
viruses (30%) less frequently carried resistance mutations than did
subtype B viruses (4.8% vs. 12.9%;). Baseline resistance increased
over time in newly diagnosed cases of non-B infection: from P
<.01 2.0% (1/49) in 1996-1998 to 8.2% (16/194) in
2000-2001.
Conclusions. Drug-resistant variants are frequently present in both
recently and chronically infected therapy-naive patients.
Drug-resistant variants are most commonly seen in patients infected
with subtype B virus, probably because of longer exposure of these
viruses to drugs. However, an increase in baseline resistance in
non-B viruses is observed. These data argue for testing all
drug-naive patients and are of relevance when guidelines for
management of postexposure prophylaxis and first-line therapy are
updated.
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Searching for an assessment instrument to
determine temporomandibular disorder pain profiles for the purposes
of primary health care.
Forssell, H; Santalahti, P; Puukka, P; Talo, S.
INTERNATIONAL JOURNAL OF REHABILITATION RESEARCH, 28 (3): 203-209
SEP 2005
Mutations in the catalytic subunit of the mitochondrial DNA
polymerase g ( POLG) have been found to be an important cause of
neurological disease. Recently, we and collaborators reported a new
neurodegenerative disorder with autosomal recessive ataxia in four
patients homozygous for two amino acid changes in POLG: W748S in
cis with E1143G. Here, we studied the frequency of this allele and
found it to be among the most common genetic causes of inherited
ataxia in Finland. We identified 27 patients with mitochondrial
recessive ataxia syndrome ( MIRAS) from 15 Finnish families, with a
carrier frequency in the general population of 1:125. Since the
mutation pair W748S+E1143G has also been described in European
patients, we examined the haplotypes of 13 non-Finnish, European
patients with the W748S mutation. Haplotype analysis revealed that
all the chromosomes carrying these two changes, in patients from
Finland, Norway, the United Kingdom, and Belgium, originate from a
common ancient founder. In Finland and Norway, long, common,
northern haplotypes, outside the core haplotype, could be
identified. Despite having identical homozygous mutations, the
Finnish patients with this adult-or juvenile-onset disease had
surprisingly heterogeneous phenotypes, albeit with a characteristic
set of features, including ataxia, peripheral neuropathy,
dysarthria, mild cognitive impairment, involuntary movements,
psychiatric symptoms, and epileptic seizures. The high carrier
frequency in Finland, the high number of patients in Norway, and
the ancient European founder chromosome indicate that this newly
identified ataxia should be considered in the first-line
differential diagnosis of progressive ataxia syndromes.
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A review of the efficacy of rosuvastatin in patients with type 2
diabetes.
Tuomilehto, J; Leiter, LA; Kallend, D.
INTERNATIONAL JOURNAL OF CLINICAL PRACTICE 58: 30-40, Suppl.
143.
It has been estimated that 92% of individuals with type 2 diabetes,
without cardiovascular disease (CVD), have a dyslipidaemic profile.
Several guidelines on cardiovascular risk now recommend that
patients with diabetes should be considered at high risk of CVD and
should thus receive lipid-lowering therapy to reduce low-density
lipoprotein cholesterol (LDL-C) to below 2.5 mmol/L. Since their
introduction in 1987, statins have revolutionized the management of
CVD. The most recent statin to be introduced, rosuvastatin, has
been shown to be the most effective at lowering LDL-C, as well as
consistently raising HDL-C across the 10-40 mg dose range. This has
been confirmed by many studies, including the Measuring Effective
Reductions in Cholesterol Using Rosuvastatin Therapy (MERCURY I)
study in which rosuvastatin 10 mg was shown to be more effective
than commonly used doses of other statins, both for LDL-C reduction
and achieving treatment target goals. The effectiveness of
rosuvastatin has also been studied in type 2 diabetes patients in
three studies: the URANUS (Use of Rosuvastatin vs. Atorvastatin iN
type 2 diabetes melhtUS), ANDROMEDA (A raNdomized, Double-bhnd
study to compare Rosuvastatin [10 & 20 mg] and -atOrvastatin
[10 & 20 Mg] in patiEnts with type II DiAbetes) and CORALL
(COmpare rosuvastatin [10-40 mg] with Atorvastatin [20-80 mg] on
apo B/apo A-1 ratio in patients with type 2 diabetes meLLitus and
dyslipidaemia) studies. URANUS and ANDROMEDA showed rosuvastatin to
be more effective than atorvastatin at reducing LDL-C and achieving
treatment target goals. CORALL demonstrated rosuvastatin 10, 20 and
40 mg to be more effective at lowering LDL-C than 20, 40 and 80 mg
of atorvastatin, respectively. Ongoing studies will evaluate
whether these properties of rosuvastatin translate into beneficial
effects on atherosclerosis and significant reductions in
cardiovascular events.
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A new definition for myocardial infarction: what
difference does it make?
Salomaa, V; Koukkunen, H; Ketonen, M; Immonen-Raiha, P;
Karja-Koskenkari, P; Mustonen, J; Lehto, S; Torppa, J; Lehtonen, A;
Tuomilehto, J; Kesaniemi, YA; Pyorala, K. FINAMI Study Grp.
EUROPEAN HEART JOURNAL 26 (17): 1719-1725.
Open Access Article available 12 months after
publication
Aims - As a response to changing diagnostic tools of myocardial
infarction (MI), new case definitions for acute coronary events
were published in 2003 as the American Heart Association Scientific
Statement. We assessed the new definition in hospitalized patients
in a large population-based MI register study.
Methods and results - We identified all suspected acute coronary
syndromes with data either on troponin T or on troponin I and at
least one of the enzymatic markers of myocardial injury (n=6104).
The 2003 definition with the use of troponins identified 83% more
definite MIs than the WHO MONICA definition using cardiac enzymes.
The additional patients were older, had more often diabetes, and
received less often thrombolysis and revascularization than those
having MI by both definitions. Adjusting for age, sex, study area,
and study year, the additional patients with their first MI aged
25-74 had a higher risk of cardiovascular death within 1 year than
patients having definite MI by both definitions (hazard ratio 1.6,
95% CI 1.1-2.2).
Conclusion - The changing diagnostic criteria present a
considerable challenge for the assessment of long-term trends in MI
events in the community as well as for longitudinal studies of the
natural history of MI. The 2003 definition, when applied using
troponins, identified a sizable new group of MI patients, among
persons with suspected acute coronary syndrome, at high risk of a
recurrent event.
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The burden of mortality attributable to diabetes - Realistic
estimates for the year 2000.
Roglic, G; Unwin, N; Bennett, PH; Mathers, C; Tuomilehto, J;
Nag, S; Connolly, V; King, H.
DIABETES CARE, 28 (9): 2130-2135 SEP 2005
Open Access Article
OBJECTIVE- To estimate the global number of excess deaths due to
diabetes in the year 2000.
RESEARCH DESIGN AND METHODS- We used a computerized generic formal
disease model (DisMod 11), used by the World Health Organization to
assess disease burden through modeling the relationships between
incidence, prevalence, and disease-specific mortality. Baseline
input data included population structure, age- and sex-specific
estimates of diabetes prevalence, and available published estimates
of relative risk of death for people with diabetes compared with
people without diabetes. The results were validated with
population-based observations and independent estimates of relative
risk of death.
RESULTS- The excess global mortality attributable to diabetes in
the year 2000 was estimated to be 2.9 million deaths, equivalent to
5.2% of all deaths. Excess mortality attributable to diabetes
accounted for 2-3% of deaths in poorest countries and over 8% in
the U.S., Canada, and the Middle East. In people 35-64 years old,
6-27% of deaths were attributable to diabetes.
CONCLUSIONS- These are the first global estimates of mortality
attributable to diabetes. Globally, diabetes is likely to be the
fifth leading cause of death.
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The diagnosis, symptomatology, and epidemiology of
seasonal affective disorder.
Magnusson, A; Partonen, T.
CNS SPECTRUMS, 10 (8): 625-+ AUG 2005
KeyWords Plus: PATTERN-ASSESSMENT-QUESTIONNAIRE; DEFICIT
HYPERACTIVITY DISORDER; NONSEASONAL MOOD DISORDERS; DSM-III-R;
WINTER DEPRESSION; BULIMIA-NERVOSA; FOLLOW-UP; PRIMARY-CARE; MAJOR
DEPRESSION; COLLEGE-STUDENTS
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Overexpression of OSBP-related protein 2 (ORP2) induces changes in
cellular cholesterol metabolism and enhances endocytosis.
Hynynen, R; Laitinen, S; Kakela, R; Tanhuanpaa, K; Lusa, S;
Ehnholm, C; Somerharju, P; Ikonen, E; Olkkonen, VM.
BIOCHEMICAL JOURNAL, 390: 273-283 Part 1 AUG 15 2005
Open Access Article
ORP2 [OSBP (oxysterol-binding protein)-related protein 2]
belongs to the 12-member mammalian ORP gene/protein family. We
characterize in the present study the effects of inducible ORP2
overexpression on cellular cholesterol metabolism in HeLa cells and
compare the results with those obtained for CHO cells
(Chinese-hamster ovary cells) that express ORP2 constitutively. In
both cell systems, the prominent phenotype is enhancement of
[C-14]cholesterol efflux to all extracellular acceptors, which
results in a reduction of cellular free cholesterol. No change was
observed in the plasma membrane cholesterol content or distribution
between raft and non-raft domains upon ORP2 expression. However,
elevated HMG-CoA (3-hydroxy-3-methyl-glutaryl-CoA) reductase
activity and LDL (low-density lipoprotein) receptor expression, as
well as enhanced transport of newly synthesized cholesterol to a
cyclodextrin-accessible pool, suggest that the ORP2 expression
stimulates transport of cholesterol out of the endoplasmic
reticulum. In contrast with ORP2/CHO cells, the inducible ORP2/HeLa
cells do not show down-regulation of cholesterol esterification,
suggesting that this effect represents an adaptive response to
long-term cholesterol depletion in the CHO cell model. Finally, we
provide evidence that ORP2 binds PtdIns(3,4,5)P-3 and enhances
endocytosis, phenomena that are probably interconnected. Our
results suggest a function of ORP2 in both cholesterol trafficking
and control of endocytic membrane transport.
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Effects of diet and simvastatin on fatty acid composition in
hypercholesterolemic men - A randomized controlled trial.
Jula, A; Marniemi, J; Ronnemaa, T; Virtanen, A; Huupponen,
R.
ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY 25 (9):
1952-1959.
Objective - To explore the separate and combined effects of
simvastatin and a low-saturated diet rich in alpha-linolenic acid
on serum fatty acids.
Methods and Results - 120 hypercholesterolemic men were randomly
allocated to a habitual diet or dietary treatment group and to
receive, in random order, simvastatin 20 mg/d or placebo, each for
12 weeks, in a double-blind manner. Dietary treatment decreased
proportions from total fatty acids of palmitic acid (C16: 0) by
3.3% ( P < 0.05), stearic acid (C18: 0) by 3.7% ( P < 0.05)
and increased proportions of oleic acid (C18: 1n-9) by 4.2% ( P
< 0.01), and alpha-linolenic acid ( C18: 3n-3) by 29.8% ( P <
0.001). Simvastatin decreased proportions from total fatty acids of
palmitic acid by 2.0% ( P < 0.01), linoleic acid (C18: 2n-6) by
5.3% ( P < 0.001), and alpha-linolenic acid by 6.8% ( P <
0.05), and increased proportions of gamma-linolenic acid (C18: 3n-
6) by 11.1% ( P < 0.001), dihomo-gamma-linolenic acid (C20: 3n-
6) by 4.2% ( P < 0.01), arachidonic acid ( C20: 4n-6) by 14.2% (
P < 0.001), and the sum of long-chain polyunsaturated fatty
acids (C20-22) by 9.0% ( P < 0.001). Simvastatin increased
ratios of stearic to palmitic, gamma-linolenic to linoleic, and
arachidonic to dihomo- gamma-linolenic acid by 7.6%, 17.0%, and
10.0% ( P < 0.001 for all), respectively, suggesting increased
fatty acid elongase and Delta 6- and Delta 5-desaturase enzyme
activities.
Conclusions - Increased formation of long-chain polyunsaturated
fatty acids and their metabolites may contribute a substantial part
of the pleiotropic effects of simvastatin.
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Effect of simvastatin, an established lipid-lowering drug, on
pulmonary Chlamydia pneumoniae infection in mice.
Erkkilä, L; Jauhiainen, M; Laitinen, K; Haasio, K; Tiirola,
T; Saikku, P; Leinonen, M.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY 49 (9): 3959-3962.
Open Access Article
The effects of simvastatin treatment on Chlamydia pneumoniae
lung infection, inflammation, and serum lipids in mouse model were
studied. Simvastatin decreased viable chlamydial counts and
increased inflammatory cell infiltrates in the lung tissue,
suggesting that simvastatin treatment had both antichlamydial and
immunomodulatory effects during an acute C pneumoniae infection.
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