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Detection of SARS-CoV-2 RNA and antibodies in breast milk of infected mothers. J Med Virol 2022; 95:e28142. [PMID: 36098372 PMCID: PMC9538366 DOI: 10.1002/jmv.28142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/19/2022] [Accepted: 09/09/2022] [Indexed: 01/11/2023]
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Differential Effect of ADHD and Bipolar Disorder Symptoms on Working Memory Network Abnormalities in Comorbid Subjects. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)72087-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Abstract
BACKGROUND The effects of severe obesity on right ventricular function in the absence of associated cardiopulmonary disease are not well known. Right myocardial performance index (R-MPI) is an echocardiographic index to non-invasively assess the right ventricular function. The aim of our study was to assess R-MPI in individuals with severe but uncomplicated obesity before and after a significant weight loss induced by bariatric surgery. PATIENTS AND METHODS Fifteen obese females (OB) without cardiovascular and pulmonary diseases were examined. In all subjects, R-MPI was calculated by Doppler echocardiography as the sum of isovolumetric contraction time and isovolumetric relaxation time divided by ejection time. Furthermore, pulmonary function test (PFT) and 6-min walking test (6mWT) were performed. Ten healthy subjects with normal weight (HS) were also evaluated as controls. R-MPI, PFT and 6mWT were also re-evaluated one year later in 12 obese subjects treated with gastric banding after a consistent weight loss (> 20%). RESULTS A prolongation of R-MPI was found in OB before bariatric surgery in comparison to the HS (0.47 +/- 0.04 and 0.29 +/- 0.05, respectively; P < 0.001). R-MPI significantly improved in OB 12 months after surgery (0.32 +/- 0.03) and was no longer different from HS. R-MPI positively correlated to body mass index (BMI). A significant association was found between the reduction of BMI after bariatric surgery and the distance walked during the 6mWT. CONCLUSIONS These results show a right ventricular dysfunction in severe uncomplicated obesity, associated with an impaired functional capacity which recovers after consistent weight loss.
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Re-examining comorbidity of Obsessive Compulsive and Attention-Deficit Hyperactivity Disorder using an empirically derived taxonomy. Eur Child Adolesc Psychiatry 2004; 13:83-91. [PMID: 15103533 DOI: 10.1007/s00787-004-0379-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/19/2003] [Indexed: 11/24/2022]
Abstract
BACKGROUND Using an empirically derived instrument to reduce the assessor bias inherent in structured diagnostic interviews, we sought to re-examine and validate the putative comorbidity between Obsessive Compulsive Disorder (OCD) and Attention-Deficit/Hyperactivity Disorder (ADHD) in children and adolescents. METHOD We examined the correlation between Child Behavior Checklist (CBCL) syndrome, competence, and composite scores in children with: 1) OCD plus ADHD (OCD + ADHD), N = 47; 2) OCD without comorbid ADHD (OCD), N = 33; 3) ADHD without comorbid OCD (ADHD) N = 43; and 4) comparison controls recruited from general pediatric clinics,N = 32. RESULTS CBCL findings in our ADHD children were similar to previous findings reported in ADHD youth, irrespective of the presence or absence of comorbid OCD. Comorbid youth generally had additive scores on the CBCL scales, reflecting the independent contribution of symptomatic and functional impairment from each disorder. CONCLUSION These findings suggest that when ADHD-like symptoms are seen in OCD youth, they reflect a true comorbid state of OCD plus ADHD. The CBCL may provide a rapid assessment tool to identify comorbid ADHD in OCD youth.
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Tourette disorder and ADHD. ADVANCES IN NEUROLOGY 2001; 85:57-77. [PMID: 11530447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Abstract
Circulating and urinary levels of endothelin (ET), an endothelium-derived vasoconstrictive and mitogenic peptide have been reported to increase in patients with chronic obstructive pulmonary disease (COPD), but the mechanisms of these abnormalities are not fully understood. Our study objectives were to evaluate pulmonary and renal ET clearance in COPD patients during an acute exacerbation. Our participants included nine consecutive patients with moderate to severe COPD without signs of right heart failure admitted for acute exacerbation and ten healthy volunteers (HV) as controls. ET was detected by radioimmunoassay in venous and arterial blood as well as in a timed urine specimen. For each subject, arterial/venous immunoreactive ET ratio (ir-ETart/ir-ETven) was evaluated as an index of its pulmonary clearance. Creatinine clearance was employed in each case to obtain a corrected renal ir-ET clearance. Glomerular filtration rate (GFR) was also assessed by dynamic(99m)Tc-diethylenetriamine pentaacetic acid renal scintigraphy in six COPD patients during acute exacerbation and at recovery. The ratio ir-ETart/ir-ETven was comparable in COPD patients (0.75+/-0.12) and in HV (0.82+/-0.09). A significant difference was found with respect to 24 h ir-ET urinary excretion between COPD patients during exacerbation as well as at recovery (respectively 142.1+/-12.8 ng/24 h and 89.0+/-15.1 ng/24 h) and HV (65.1+/-10.1 ng/24 h). ET renal clearance was higher in COPD patients than in HV (29.2+/-5.2 ml min(-1)in COPD during exacerbation; 17.5+/-3.9 ml min(-1)at recovery and 13.6+/-2.4 ml min(-1)in HV, P<0.001). GFR was 69.4+/-10.0 ml min(-1)in COPD patients during exacerbation and it significantly increased at the recovery (95.5+/-20.9 ml min(-1)P<0.001). Corrected renal clearance of the peptide was significantly correlated to GFR values during the exacerbation (r=-0.81, P<0.05). Furthermore change in renal ET production resulted associated with changes in paCO(2)(r=0.83, P<0.001) and in paO(2)(r=-0.73, P<0.05). Acute exacerbation in COPD patients causes an increase in renal ET production which is partially reversible at the recovery, in the absence of significant changes in ET-1 circulating levels. ET might contribute to the renal response to hypoxaemia and hypercapnia in COPD.
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Efficacy of a mixed amphetamine salts compound in adults with attention-deficit/hyperactivity disorder. ARCHIVES OF GENERAL PSYCHIATRY 2001; 58:775-82. [PMID: 11483144 DOI: 10.1001/archpsyc.58.8.775] [Citation(s) in RCA: 172] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND We report on a controlled trial of a mixed amphetamine salts compound (Adderall, dextroamphetamine sulfate, dextro-, levoamphetamine sulfate, dextroamphetamine aspartate, levoamphetamine aspartate, and dextroamphetamine saccharate) in the treatment of adult attention-deficit/hyperactivity disorder (ADHD). METHODS This was a 7-week, randomized, double-blind, placebo-controlled, crossover study of Adderall in 27 well-characterized adults satisfying full DSM-IV criteria for ADHD of childhood onset and persistent symptoms into adulthood. Medication was titrated up to 30 mg twice a day. Outcome measures included the ADHD Rating Scale and the Clinical Global Impression Score. Comorbid psychiatric disorders were assessed to test for potential effects on treatment outcome. RESULTS Treatment with Adderall at an average oral dose of 54 mg (administered in 2 daily doses) was effective and well tolerated. Drug-specific improvement in ADHD symptoms was highly significant overall (42% decrease on the ADHD Rating Scale, P<.001), and sufficiently robust to be detectable in a parallel groups comparison restricted to the first 3 weeks of the protocol (P<.001). The percentage of subjects who improved (reduction in the ADHD rating scale of > or =30%) was significantly higher with Adderall treatment than with a placebo (70% vs 7%; P =.001). CONCLUSIONS Adderall was effective and well tolerated in the short-term treatment of adults with ADHD. More work is needed to evaluate the long-term effects of Adderall, or other amphetamine compounds, in the treatment of adults with ADHD.
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Abstract
Although juvenile obsessive compulsive disorder (OCD) is increasingly recognized as a putative developmental subtype of the disorder, comparisons among children, adolescents, and adults with OCD have been lacking. We aimed to evaluate clinical correlates of OCD in three developmentally distinct groups. Subjects comprised children, adolescents, and adults meeting DSM-III-R and DSM-IV criteria for OCD referred to separate specialized OCD clinics. All subjects were systematically evaluated with structured diagnostic interviews and clinical assessments by OCD experts. Specific clinical correlates and symptom profiles were associated with the disorder in different age groups. These findings support a hypothesis of developmental discontinuity between juvenile and adult OCD and identify age specific correlates of the disorder across the life cycle. Further work is needed to validate whether juvenile-onset OCD represents a true developmental subtype of the disorder.
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Impact of tic disorders on ADHD outcome across the life cycle: findings from a large group of adults with and without ADHD. Am J Psychiatry 2001; 158:611-7. [PMID: 11282697 DOI: 10.1176/appi.ajp.158.4.611] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The impact of tic disorders on the outcome of attention deficit hyperactivity disorder (ADHD) remains a subject of high scientific and clinical interest. To evaluate the impact of comorbid ADHD and tic disorders from a lifespan perspective, the authors systematically examined data from adults with and without ADHD. METHOD They comprehensively evaluated 312 consecutively referred adults with ADHD and 252 comparison subjects without ADHD. Tic disorders were characterized along with a wide range of neuropsychiatric correlates, including other comorbid disorders as well as indexes of function in the domains of school, cognition, and interpersonal functioning. RESULTS A significantly greater proportion of adults with ADHD (12%) than those without ADHD (4%) had tic disorders. Tic disorders followed a mostly remitting course and had little impact on functional capacities. In addition, tic disorders were not associated with stimulant use. CONCLUSIONS These findings in adults with ADHD confirm and extend previous findings in young subjects with ADHD, documenting that although individuals with ADHD are at greater risk for tic disorders, the presence of tic disorders has a limited impact on ADHD outcome.
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A clinical-pharmacological evaluation of percutaneous isolated hepatic infusion of doxorubicin in patients with unresectable liver tumors. Oncol Res 2000; 11:529-37. [PMID: 10905565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
A dose escalation study of hepatic arterial infusion of doxorubicin during hemodynamic isolation of the liver (the Delcath system) was conducted to: 1) study the pharmacokinetics of regional doxorubicin therapy, and 2) define therapeutic efficacy in the treatment of unresectable liver tumors. Eighteen patients with unresectable primary or metastatic tumor in the liver were treated with 57 procedures. Pharmacokinetic studies were performed on all treatments. Hepatic extraction ratio of doxorubicin remained constant at 60.3+/-12.1%. independent of the dose escalation. The calculated intrahepatic concentration of doxorubicin ranged from 30 to 88 microg/ml when the dosage of doxorubicin was escalated from 50 to 120 mg/m2. Dose-limiting systemic toxicity (grade 4 myelosuppression) was observed at 120 mg/m2. Twelve of 14 patients who received more than one treatment at 90 or 120 mg/m2 were evaluable for disease response: there were 4 partial responses, 3 minor responses, I stable disease, and 4 progressive disease. The median overall survival of responders was 23 months, and for nonresponders it was 8 months. We have demonstrated a dose-response effect of hepatic infusion of doxorubicin at 90 and 120 mg/m2 in advanced hepatic malignancies. The isolated hepatic perfusion system improves the therapeutic index of doxorubicin and provides pharmacologic justification for its use in the treatment of unresectable hepatic malignancies, especially metastatic melanoma and sarcoma.
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The effect of platelet-activating factor (PAF) on nasal airway resistance in healthy subjects is not mediated by nitric oxide. Allergy 2000; 55:757-61. [PMID: 10955702 DOI: 10.1034/j.1398-9995.2000.00603.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND The nose is an important source of nitric oxide (NO) in man, but the relevance of NO production to the response to inflammatory mediators is not clear. METHODS In this study, we evaluated the effect of NO inhibition on nasal airway resistance (NAR) at baseline, after an acute challenge with platelet-activating factor (PAF), a potent proinflammatory factor, and after an acute challenge with bradykinin (BK), both of which are mediators of allergic rhinitis in man. Eight healthy subjects were enrolled in the study. Nasal NO production was measured by the chemiluminescence method, and NAR was measured by active anterior rhinomanometry. RESULTS Basal nasal NO concentration was 500.6+/-115.6 ppb; it significantly decreased after topical administration of the NO-synthase inhibitor L-NAME, and the NO-synthase substrate L-arginine caused a recovery in NO production. The administration of L-NAME did not cause any change in basal NAR. In a double-blind fashion, we performed nasal challenge with PAF and BK after topical pretreatment with either placebo or L-NAME. After placebo pretreatment, both PAF and BK caused a significant increase in NAR (respectively, from 0.29+/-0.11 Pa s cm(-3) to 0.75+/-0.21 Pa s cm(-3), and from 0.36+/-0.18 Pa s cm(-3) to 0.71+/-0.25 Pa s cm(-3); P<0.001, n=8). Pretreatment with L-NAME did not prevent the PAF-induced increase in NAR (from 0.31+/-0.10 Pa s cm(-3) to 0.71+/-0.27 Pa s cm(-3)), whereas it prevented the BK-induced increase in NAR (from 0.33+/-0.15 Pa s cm(-3) to 0.43+/-0.16 Pa s cm(-3)). CONCLUSIONS Topical administration of the NO-synthase inhibitor L-NAME at doses sufficient to decrease NO nasal production does not prevent the PAF-induced increase in NAR, indicating that NO generation in vivo is not involved in the nasal response to PAF.
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Experiencias de reducción de daños relacionados con las drogas en Buenos Aires. Adicciones 1999. [DOI: 10.20882/adicciones.617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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The 4-year course of tic disorders in boys with attention-deficit/hyperactivity disorder. ARCHIVES OF GENERAL PSYCHIATRY 1999; 56:842-7. [PMID: 12884890 DOI: 10.1001/archpsyc.56.9.842] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Despite long-standing clinical concerns, relatively little is known about the comorbidity between attention-deficit/hyperactivity disorder (ADHD) and tic disorders. Therefore, we examined tic disorders in an ongoing prospective follow-up study of male subjects with ADHD, a sample unselected for any comorbid disorder. METHODS One hundred twenty-eight male children and adolescents with ADHD and 110 male controls were comprehensively evaluated at baseline and 4 years later. We characterized tic disorders along with a wide range of neuropsychiatric correlates, including other comorbid disorders and indices of psychosocial function in multiple domains (school, cognitive, social, and family). RESULTS Compared with controls, subjects with ADHD showed more tic disorders at baseline and more new onsets were reported at follow-up. Attention-deficit/hyperactivity disorder and tic disorders appeared to be independent in course: in contrast to low rates of ADHD remission, tic disorders mostly remitted. The age-adjusted rate of ADHD remission was 20% and that of tic remission, 65%. Tic disorders had little effect on the psychosocial functioning of subjects with ADHD. CONCLUSIONS These findings suggest that comorbidity with a tic disorder has a limited effect on ADHD outcome. However, because of the relatively small sample of subjects with tic disorders, our conclusions should be considered preliminary until confirmed in larger studies of medicated and unmedicated children with ADHD with and without tic disorders.
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Disentangling the overlap between Tourette's disorder and ADHD. J Child Psychol Psychiatry 1998; 39:1037-44. [PMID: 9804036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
OBJECTIVE To identify similarities and differences in neuropsychiatric correlates in children with Tourette's syndrome (TS) and those with ADHD. METHOD The sample consisted of children with Tourette's syndrome with ADHD (N = 79), children with Tourette's syndrome without ADHD (N = 18), children with ADHD (N = 563), psychiatrically referred children (N = 212), and healthy controls (N = 140). RESULTS Disorders specifically associated with Tourette's syndrome were obsessive compulsive disorder (OCD) and simple phobias. Rates of other disorders, including other disruptive behavioral, mood, and anxiety disorders, neuropsychologic correlates, and social and school functioning were indistinguishable in children with Tourette's and ADHD. However, children with Tourette's syndrome plus ADHD had more additional comorbid disorders overall and lower psychosocial function than children with ADHD. CONCLUSIONS These findings confirm previously noted associations between Tourette's syndrome and OCD but suggest that disruptive behavioral, mood, and anxiety disorders as well as cognitive dysfunctions may be accounted for by comorbidity with ADHD. However, Tourette's syndrome plus ADHD appears to be a more severe condition than ADHD alone.
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Detection of IgG and IgA against the mycobacterial antigen A60 in patients with extrapulmonary tuberculosis. Thorax 1998; 53:377-80. [PMID: 9708230 PMCID: PMC1745209 DOI: 10.1136/thx.53.5.377] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Diagnosis of extrapulmonary tuberculosis is often difficult to establish using standard methods. Serological techniques based on detection of antibodies against mycobacterial antigen A60 have shown good sensitivity and specificity in pulmonary tuberculosis. The present study was undertaken to define the diagnostic accuracy of testing for IgG and IgA against A60 in extrapulmonary tuberculosis. METHODS One hundred and ninety eight subjects were studied: 42 patients with extrapulmonary tuberculosis confirmed by microbiology and/or histology, 24 subjects with healed pulmonary or extrapulmonary tuberculosis, 44 patients with a defined non-tuberculous disease, and 88 healthy volunteers (44 PPD negative and 44 PPD positive). Detection of IgG and IgA against A60 antigen was carried out by enzyme-linked immunosorbent assay. Cut off values were determined by receiver operating characteristic curves. RESULTS Sensitivity of the IgG test was 73.8% in extrapulmonary tuberculosis, while the specificity was 96.1%. The IgA test showed a sensitivity of 69.0% with a specificity of 93.6%. Combination of the IgG and IgA tests showed a sensitivity of 80.9% and a specificity of 92.3%. Patients with extrapulmonary tuberculosis showed significantly higher titres of both IgG and IgA against A60 than other groups. CONCLUSIONS Anti-A60 IgG or IgA tests are characterised by good sensitivity and specificity. The combined use of both tests allows an increase in diagnostic accuracy of extrapulmonary tuberculosis.
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Characterization of platelet-activating factor acetylhydrolase in human bronchoalveolar lavage. Am J Respir Crit Care Med 1997; 156:94-100. [PMID: 9230731 DOI: 10.1164/ajrccm.156.1.9608084] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Platelet-activating factor (PAF) is a mediator produced in human airways during acute and chronic inflammatory lung diseases. The levels of PAF are regulated by acetylhydrolase (AH), the enzyme that converts PAF to lyso-PAF. To determine whether AH was present in human bronchoalveolar lavage (BAL) fluid, BAL was obtained from normal donors (n = 18) and from adult patients with mild bronchial asthma (n = 15) or with lung fibrosis (n = 15). AH activity was consistently found in the cell-free BAL fluid. BAL-AH is an enzyme different from secretory phospholipase A2 and from plasma AH and erythrocyte AH. Furthermore, BAL-AH is inhibited as much as 95% by exposure to an oxygen radical-generating system (xanthine/xanthine oxidase). BAL-AH is significantly correlated with the number of BAL macrophages (rs = 0.63; p < 0.02). In addition, BAL macrophages release AH both spontaneously and after stimulation with tumor necrosis factor-alpha (TNF-alpha) (100 ng/ml). BAL-AH activity in patients with bronchial asthma (1.32 +/- 0.18 pmol of PAF converted to lyso-PAF/min) is significantly lower than that in normal donors (2.25 +/- 0.26 pmol/min; p < 0.001). In contrast, BAL-AH activity in patients with lung fibrosis (6.13 +/- 0.81 pmol/min) is higher than that found in normal donors (p < 0.01). The variations in BAL-AH activity in patients with bronchial asthma or lung fibrosis are due to a reduction and to an increase, respectively, in the number of active molecules rather than to changes in enzyme affinity. These data demonstrate that human BAL fluid contains an extracellular AH activity that inactivates PAF released in the airways. BAL-AH is secreted by alveolar macrophages and is highly sensitive to oxygen radical-induced damage. The secretion and inactivation of BAL-AH may influence the levels of this enzyme in BAL fluid during acute and chronic inflammatory lung diseases and, ultimately, regulate the proinflammatory activities of PAF in these disorders.
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Abstract
The role of nitric oxide (NO) as a bronchodilator has been studied in humans with controversial results. The aim of the present study was to investigate the role of endogenous NO on bronchial tone by studying whether nitric oxide synthase (NOS) inhibition with NGnitro-L-arginine-methyl-ester (L-NAME) influences basal bronchial tone, or potentiates methacholine-induced bronchoconstriction. In a preliminary experiment in five subjects, a significant reduction in exhaled NO was found after delivering L-NAME (15 mg in saline) (from 3.9 +/- 1.2 to 2.4 +/- 1.1 nmol min-1, P < 0.05). In nine healthy non-smokers, specific airway conductance (SGAW), as a measure of airway calibre, was recorded after delivering, in a double-blind, controlled vs. placebo fashion, both nebulized L-NAME and saline, at baseline and after methacholine-induced bronchoconstriction. There was no significant difference between the baseline SGAW values before and after delivering L-NAME (0.264 +/- 0.04 and 0.267 +/- 0.05 cm H2O-1 s-1, respectively). After pre-treatment with L-NAME, SGAW values during methacholine-induced bronchoconstriction were not different in comparison to values obtained after saline inhalation. It is concluded that decreased endogenous NO does not influence bronchial tone in healthy people, nor does it modify methacholine-induced bronchoconstriction.
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Urinary endothelin excretion in patients with acute lung injury. Monaldi Arch Chest Dis 1997; 52:217-20. [PMID: 9270244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Increase in circulating levels of endothelin (ET), a potent vasoconstrictive and mitogenic endothelium-derived peptide, has been proposed as a marker of endothelium dysfunction in acute lung injury (ALI). In the present study, we have measured levels of immunoreactive ET (irET) by radioimmunoassay, in arterial (irETart), venous (irETven) and urine (irETur) samples obtained from 10 patients with ALI and 10 healthy volunteers. Arterovenous ratio, 24 h urine excretion and renal clearance of the peptide were calculated, to obtain indices of endogenous ET metabolism. The arterovenous ratio of irET was significantly higher in patients with ALI than in healthy volunteers (1.20 +/- 0.20 and 0.85 +/- 0.06, respectively; p < 0.05)). Twenty four hour urinary excretion of the peptide was increased in patients with ALI as compared to healthy volunteers (134.10 +/- 21.0 and 71.70 +/- 9.30 ng.24 h-1, respectively; p < 0.001). Renal clearance of irET was similar in patients with ALI and healthy volunteers, indicating that the increase in excretion as well as in arterovenous gradient observed in patients with ALI was related mainly to pulmonary abnormalities of peptide handling. Urinary excretion of endothelin might be a useful marker of endothelial dysfunction occurring in acute lung injury.
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Abstract
BACKGROUND Endothelin (ET) is an endothelium-derived multifunctional peptide involved in the local regulation of the vascular tone. STUDY OBJECTIVES To assess changes of endogenous ET production/excretion in the acute phase (36 h from the event) of pulmonary embolism (PE). PARTICIPANTS Ten patients with acute PE, nine patients with acute lung injury (ALI), and 12 healthy volunteers (HVs). MEASUREMENTS AND RESULTS ET was detected by radioimmunoassay in venous and arterial blood as well as in 24-h urine specimens. For each subject, arterial/venous immunoreactive ET (ir-ET) ratio was evaluated as an index of its pulmonary extraction/synthesis. Creatinine clearance was employed in each case to obtain a corrected renal ir-ET clearance. Renal ir-ET clearance was comparable in all three groups. Arterial/venous ir-ET ratio was comparable in PE and in ALI patients (1.31 +/- 0.25 vs 1.24 +/- 0.20; p = 0.7), while it was significantly higher in PE patients than in HV subjects (0.85 +/- 0.07; p = 0.0001). Accordingly, 24-h urine ir-ET excretion was higher in PE (120.50 +/- 27.36 ng/24 h) and ALI patients (135.80 +/- 21.60 ng/24 h) than in HV subjects (68.33 +/- 9.31 ng/24 h; p = 0.0001). CONCLUSIONS Abnormalities of ET metabolism-mainly related to increased synthesis and/or defective pulmonary handling-occur in the acute phase of PE. The relevance of this finding with respect to the pathogenesis and/or management of pulmonary thromboembolism remains to be elucidated.
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Evaluation of IgA-mediated humoral immune response against the mycobacterial antigen P-90 in diagnosis of pulmonary tuberculosis. Chest 1997; 111:601-5. [PMID: 9118694 DOI: 10.1378/chest.111.3.601] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Serologic methods for diagnosis of tuberculosis have been widely investigated owing to their low cost and rapid technical execution. Sensitivity and specificity of different tests have been reported to be largely variable. STUDY OBJECTIVES To evaluate the IgA-mediated humoral immune response against the mycobacterial antigen P-90 as a tool for diagnosis of pulmonary tuberculosis. PARTICIPANTS Eighty-eight patients with microbiologically confirmed diagnosis of pulmonary tuberculosis (32 with positive sputum smears and 56 with negative sputum smears), 28 patients with a definite nontuberculous lung disease, 12 subjects with healed tuberculosis, and 47 healthy volunteers (24 purified protein derivative negative and 23 positive). MEASUREMENTS AND RESULTS Detection of anti-P-90 IgA was performed by enzyme-immunoassay. At a cutoff of 0.221 optical density, determined by a receiver operating characteristic curve, the overall sensitivity and specificity of the test were 70.4% and 91.9%, respectively. Patients with active tuberculosis showed significantly higher titers of anti-P-90 IgA compared with other groups (p < 0.05). CONCLUSIONS The evaluation of IgA-mediated humoral immune response against the antigen P-90 might constitute a useful tool for presumptive diagnosis of pulmonary tuberculosis.
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Detection of IgA against the mycobacterial antigen A60 in serum and saliva in patients with active pulmonary tuberculosis: preliminary results. THE NEW MICROBIOLOGICA 1996; 19:363-7. [PMID: 8914139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Humoral immune response against the mycobacterial antigen A60 was evaluated in 38 subjects: 13 healthy volunteers (Group I), 10 patients with a defined acute or chronic non tuberculous lung disease (Group II), 15 patients suffering from pulmonary tuberculosis (Group III). Saliva IgA in samples diluted in various concentrations (1:10, 1:30, 1:50) and serum IgG and IgA levels were measured by ELISA. Positive values of IgG were found in sera of 0/13 subjects from Group I, 1/10 from Group II, 12/15 from Group III; searching for IgA in serum was positive in 1/13 subjects from Group I, 2/10 from Group II, 11/15 from Group III, 1:30 dilution of saliva led to positive results in 0/13 subjects from Group I, 0/10 from Group II and 10/15 from Group III. The measurement of anti-A60 IgA levels in both saliva and serum might be a useful complement to serology based on detection of anti-A60 IgG in blood samples.
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Abstract
OBJECTIVE To evaluate the psychiatric, cognitive, and functional correlates of attention-deficit hyperactivity disorder (ADHD) children with and without comorbid bipolar disorder (BPD). METHOD DSM-III-R structured diagnostic interviews and blind raters were used to examine psychiatric diagnoses at baseline and 4-year follow-up in ADHD and control children. In addition, subjects were evaluated for cognitive, academic, social, school, and family functioning. RESULTS BPD was diagnosed in 11% of ADHD children at baseline and in an additional 12% at 4-year follow-up. These rates were significantly higher than those of controls at each assessment. ADHD children with comorbid BPD at either baseline or follow-up assessment had significantly higher rates of additional psychopathology, psychiatric hospitalization, and severely impaired psychosocial functioning than other ADHD children. The clinical picture of bipolarity was mostly irritable and mixed. ADHD children with comorbid BPD also had a very severe symptomatic picture of ADHD as well as prototypical correlates of the disorder. Comorbidity between ADHD and BPD was not due to symptom overlap. ADHD children who developed BPD at the 4-year follow-up had higher initial rates of comorbidity, more symptoms of ADHD, worse scores on the CBCL, and a greater family history of mood disorder compared with non-BPD, ADHD children. CONCLUSIONS The results extend previous results documenting that children with ADHD are at increased risk of developing BPD with its associated severe morbidity, dysfunction, and incapacitation.
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Child Behavior Checklist findings further support comorbidity between ADHD and major depression in a referred sample. J Am Acad Child Adolesc Psychiatry 1996; 35:734-42. [PMID: 8682754 DOI: 10.1097/00004583-199606000-00013] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE To examine the convergence of categorical and empirical diagnostic systems to evaluate whether psychiatric comorbidity of juvenile major depression with attention-deficit hyperactivity disorder (ADHD) is due to assessment bias. METHOD Using total predictive value and the odds ratio, the authors evaluated the convergence of Child Behavior Checklist (CBCL) scales with structured interview-derived diagnoses in 94 children with major depression, 97 with ADHD, and 115 normal control children with neither diagnosis. RESULTS The CBCL Anxious/Depressed scale discriminated depressed from nondepressed children irrespective of comorbidity with ADHD, and the Attention Problems scale discriminated ADHD from non-ADHD children irrespective of comorbidity with major depression. Children with major depression comorbid with ADHD had CBCL correlates of both syndromes. CONCLUSIONS Since the CBCL is an empirically derived taxonomic system, the correspondence between the content-congruent CBCL scales and DSM-III-R categorical diagnoses of major depression and of ADHD indicates that previously reported findings of high overlap between these two disorders using structured diagnostic interview methodology and trained raters were not due to rater biases.
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A prospective 4-year follow-up study of attention-deficit hyperactivity and related disorders. ARCHIVES OF GENERAL PSYCHIATRY 1996; 53:437-46. [PMID: 8624187 DOI: 10.1001/archpsyc.1996.01830050073012] [Citation(s) in RCA: 448] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Previous cross-sectional data showed that children and adolescents with attention-deficit hyperactivity disorder (ADHD) are at increased risk of comorbid conduct, mood, and anxiety disorders as well as impairments in cognitive, social, family, and school functioning. However, longitudinal data were needed to confirm these initial impressions. METHODS Using DSM-III-R structured diagnostic interviews and raters blinded as to diagnosis, we reexamined psychiatric diagnoses at 1- and 4-year follow-ups in children with ADHD and controls. In addition, subjects were evaluated for cognitive, achievement, social, school and family functioning. RESULTS Analyses of follow-up findings revealed significant differences between children with ADHD and controls in rates of behavioral, mood, and anxiety disorders, with these disorders increasing markedly from baseline to follow-up assessments. In addition, children with ADHD had significantly more impaired cognitive, family, school, and psychosocial functioning than did controls. Baseline diagnosis of conduct disorder predicted major depression and bipolar disorder at follow-up, and anxiety disorders at baseline predicted anxiety disorders at follow-up. CONCLUSION These results confirm and extend previous retrospective results indicating that children with ADHD are at high risk of developing a wide range of impairments affecting multiple domains of psychopathology such as cognition, interpersonal, school, and family functioning. These findings provide further support for the value of considering psychiatric comorbidity in both clinical assessment and research protocols involving children with ADHD.
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Predictors of persistence and remission of ADHD into adolescence: results from a four-year prospective follow-up study. J Am Acad Child Adolesc Psychiatry 1996; 35:343-51. [PMID: 8714323 DOI: 10.1097/00004583-199603000-00016] [Citation(s) in RCA: 355] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE To evaluate the predictors of persistence and the timing of remission of attention-deficit hyperactivity disorder (ADHD). METHOD Subjects were 6- to 17-year old Caucasian, non-Hispanic boys with and without ADHD. DSM-III-R structured diagnostic interviews and blind raters were used to examine psychiatric diagnoses, cognitive achievement, social, school, and family functioning at a 4-year follow-up assessment. RESULTS At the 4-year follow-up assessment, 85% of children with ADHD continued to have the disorder and 15% remitted. Of those who remitted, half did so in childhood and the other half in adolescence. Predictors of persistence were familiality of ADHD, psychosocial adversity, and comorbidity with conduct, mood, and anxiety disorders. CONCLUSIONS The findings prospectively confirm that the majority of children with ADHD will continue to express the disorder 4 years later. For a minority of children, ADHD was a transient disorder that remits early in development. In addition, we have shown that persistence of ADHD is predictable. Familiality, adversity, and psychiatric comorbidity may be clinically useful predictors of which children with ADHD are at risk for a persistent disorder.
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Abstract
OBJECTIVE The relationship between Tourette's syndrome (TS) and chronic tic disorder is of great clinical and scientific importance because of uncertainties in both prognosis and pharmacotherapeutic strategies. One approach to evaluating the relationship between TS and chronic tics is to examine whether they share similar neuropsychological and psychiatric correlates. METHOD Children with TS (n = 32) and children with chronic tics (n = 39) were ascertained from an unselected sample of the children referred for psychopharmacological treatment and examined using standardized diagnostic assessments and testing procedures. RESULTS Children with TS and those with chronic tics were similar to each other and different from controls in clinical correlates that included psychiatric comorbidity, as well as school, neuropsychological, and psychosocial impairments. Patients with TS also had higher rates of obsessive-compulsive disorder, oppositional defiant disorder, and simple phobia than did patients with chronic tic disorder. CONCLUSIONS These findings indicate that TS and chronic tic disorder are part of the same disease entity, with TS being a more severe form of tic disorder.
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Endothelin-1 excretion in urine in active pulmonary sarcoidosis and in other interstitial lung diseases. SARCOIDOSIS 1995; 12:118-23. [PMID: 8532958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Endothelin-1 (ET-1) is a vasoactive, mitogenic peptide that is variably increased in Bronchoalveolar Lavage Fluid (BALF) and immunohistochemically found in lung tissue of patients with Interstitial Lung Disease (ILD). To assess if endogenous ET-1 production is increased in ILD we evaluated 24 hour (24h) urine excretion of ET-1 in 20 patients with ILD and 10 healthy age-matched controls (HC). Eight patients with active pulmonary sarcoidosis (S), 6 with idiopathic pulmonary fibrosis (IPF) and 6 with focal lung fibrosis due to inactive pulmonary tuberculosis (hTB) were studied. Plasma ET-1 levels (ET-1pl, pg/ml) and 24h ET-1 levels in urine (ET-1ur, ng/24h) were measured by a specific radio-immunoassay. Determinations of ET-1p1 and ET-1ur were repeated in S and IPF patients after 30 days of prednisone (0.75 mg/kg/day) treatment. ET-1p1 concentrations were not different between HC (5.34 +/- 0.48), S (5.95 +/- 0.96), IPF (4.75 +/- 1.37) and hTB (5.97 +/- 1.05) groups. ET-1ur was significantly higher in S (189.50 +/- 60.57) than in HC (69.00 +/- 10.76), IPF (62.17 +/- 19.07) and hTB (82.00 +/- 24.97). After prednisone, ET-1ur in the S group decreased significantly (189.50 +/- 60.57 to 94.00 +/- 13.60), and the decrease paralleled the improved clinical status. In S patients, ET-1ur was not significantly correlated to the degree of respiratory impairment, but it was significantly correlated to the intensity of lymphocytic alveolitis (r = 0.80).(ABSTRACT TRUNCATED AT 250 WORDS)
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Abstract
OBJECTIVE The high levels of psychiatric comorbidity reported in juveniles meeting operational definitions of depressive disorders raise both substantive and methodological concerns about whether depression with comorbid disorders should be classified as two disorders or as different manifestations of the same condition. Our purpose was to clarify issues of diagnostic heterogeneity and diagnostic overlap in juvenile depression. METHOD The sample consisted of consecutively referred children and adolescents (N = 424) comprehensively evaluated with structured diagnostic interviews and psychosocial assessments. RESULTS A clinical picture compatible with the diagnosis of major depression was identified in 40% of these referred youths. Children meeting criteria for major depression had prototypical symptoms of the disorder, a chronic course, and severe psychosocial dysfunction. In addition, they frequently met criteria for attention-deficit hyperactivity disorder, conduct disorder, and anxiety disorders. These comorbidity findings were not due to symptom overlap among major depression and the co-occurring disorders. For the most part, comorbid disorders preceded the onset of major depression by several years. CONCLUSIONS Juvenile depression has a chronic course, severe dysfunction, and high levels of psychiatric comorbidity. Despite symptom overlap, our work suggests that major depression and other conditions may represent different disorders.
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CBCL clinical scales discriminate prepubertal children with structured interview-derived diagnosis of mania from those with ADHD. J Am Acad Child Adolesc Psychiatry 1995; 34:464-71. [PMID: 7751260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To evaluate the discriminative ability of the Child Behavior Checklist (CBCL) to identify children with structured interview-derived diagnosis of bipolar disorder. METHOD We evaluated the convergence of CBCL scales with the diagnosis of mania in 31 children with mania, 120 children with attention-deficit hyperactivity disorder, and 77 prepubertal normal control children aged 12 years or younger. We evaluated the strength of association between each CBCL scale and structured interview-derived diagnoses with total predictive value and the odds ratio. RESULTS Excellent convergence was found between the CBCL scales of Delinquent Behavior, Aggressive Behavior, Somatic Complaints, Anxious/Depressed, and Thought Problems and the diagnosis of mania. CONCLUSIONS These findings indicate that the CBCL could serve as a rapid and useful screening instrument to identify manic children in clinical settings.
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Increased 24-hour endothelin-1 urinary excretion in patients with chronic obstructive pulmonary disease. Respiration 1994; 61:263-8. [PMID: 7800957 DOI: 10.1159/000196349] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Abnormalities in endothelin-1 (ET-1) pulmonary metabolism have been reported in patients with pulmonary hypertension, asthma and chronic obstructive pulmonary disease (COPD). In this study we have evaluated the 24-hour urinary excretion of ET-1 in COPD patients both during acute exacerbation and stable phase of the disease. ET-1 plasma and urinary levels were measured in 13 COPD patients on admission to the hospital for an acute exacerbation and at the recovery period. Ten healthy volunteers were also studied. Determination of plasma and 24-Hour urinary ET-1 levels were carried out with a radioimmunoassay test. Plasma ET-1 levels in COPD patients were similar during exacerbation and recovery and were not significantly different from those in the healthy subjects. 24-hour urinary excretion of ET-1 was increased in COPD patients during acute exacerbation; it decreased during recovery, but remained elevated when compared to normal subjects. A negative correlation was found between arterial oxygen pressure and ET-1 excretion; no correlation was found between plasma and urinary ET-1 values. In conclusion, COPD patients excrete higher amounts of ET-1 compared to healthy subjects. Urinary ET-1 values are further increased during acute exacerbation of the disease.
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ELISA method for evaluation of anti-A60 IgG in patients with pulmonary and extrapulmonary tuberculosis. THE NEW MICROBIOLOGICA 1994; 17:37-43. [PMID: 8127228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Several studies on the IgG mediated humoral immune response against the mycobacterial antigen A60 are available in the literature. However extensive variability in observed responses has been reported. In the present study we measured by ELISA the titers of IgG antibodies against A60 in 50 tuberculin negative healthy subjects, (Group I); 44 tuberculin positive healthy subjects, (Group II); 13 patients with healed Tuberculosis (Group III); 22 patients with a defined acute or chronic Non Tuberculous Pulmonary Pathology (Group IV); 42 patients suffering from sputum positive Active Pulmonary Tuberculosis, (Group V); 15 patients with sputum negative Active Pulmonary Tuberculosis (Group VI) and 16 patients with Active Extrapulmonary Tuberculosis (Group VII). The assay was performed at the time of recruitment into the study, corresponding for patients of Groups IV to VII to the day of hospital admission; in patients from Groups III to VII the assay was repeated two weeks later. The cut-off point was defined as mean +2SD of values found in Groups I-IV and was 0.372 (expressed in Optical Density). By using this cut-off, the test on first blood samples was positive in 1/50 subjects from Group I, 1/44 from Group II, 0/13 from Group III, 3/22 patients from Group IV, 35/42 from Group V, 9/15 from Group VI, 9/16 from Group VII. On second blood samples, kept 9-12 days after starting anti-TB chemotherapy in Groups V, VI and VII, the test resulted positive in 0/13 patients from Group III, 3/22 from Group IV, 39/42 from Group V, 13/15 from Group VI and 14/16 from Group VII.
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Increased endothelin-like immunoreactive material on bronchoalveolar lavage fluid from patients with bronchial asthma and patients with interstitial lung disease. Respiration 1993; 60:89-95. [PMID: 8341860 DOI: 10.1159/000196180] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Endothelin (ET) is an endothelial regulatory peptide present also in pulmonary tissue where it exerts several biological actions both on bronchial and vascular smooth muscle cells. It has been shown to increase in bronchoalveolar lavage fluid (BALF) from asthmatic patients; but changes in other chronic respiratory disease have not been well studied. We measured by a radioimmunoassay (RIA) ET-immunoreactive (IR) levels on BALF (BALF-ETIR, pg/ml) from 5 normal subjects (NS), 5 patients with chronic extrapulmonary disease (ED) without signs of lung involvement, 5 patients with allergic bronchial asthma (BA), 10 patients with idiopathic lung fibrosis (ILF) and 9 patients with miscellaneous interstitial lung disease (MILD). In 5/5 NS and 4/5 ED BALF-ETIR was lower than sensibility of RIA test used (0.8 pg/ml). BALF-ETIR was dosable in all patients with bronchopulmonary disease; means were 2.45 pg/ml in BA, 12.37 pg/ml in ILF, 2.90 pg/ml in MILD--Wilcoxon's rank test (two tailed) versus NS, p < 0.05. There was an inverse correlation between BALF-ETIR values and the degree of ventilatory impairment (forced vital capacity % of predicted value, r = -0.61 p < 0.01; forced expiratory volume in 1 s % of predicted value, r = -0.71 p < 0.01) and the level of arterial pressure of O2 (PaO2; r = -0.75 p < 0.01); a positive correlation was found with number of neutrophils/ml of BALF (r = 0.52 p < 0.01)--Spearman's rank correlation. Though rarely detected on BALF from normal lungs, ET increases on BALF in patients with bronchopulmonary disease, raising the question of its involvement in pathogenic mechanisms or evolution of bronchial asthma and interstitial lung disease.
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A double-blind placebo controlled study of desipramine in the treatment of ADD: III. Lack of impact of comorbidity and family history factors on clinical response. J Am Acad Child Adolesc Psychiatry 1993; 32:199-204. [PMID: 8428872 DOI: 10.1097/00004583-199301000-00028] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A 6-week randomized, double-blind, placebo controlled trial of desipramine (DMI) in daily doses averaging 4 to 5 mg/kg for the treatment of children and adolescents with attention deficit disorder with hyperactivity (ADDH) was further analyzed. Investigators examined whether comorbidity of ADDH with conduct disorder, major depression, an anxiety disorder, or a family history of ADDH predicted response to DMI treatment. There was a highly significant effect of treatment with DMI in outcome assessments, but responses to DMI were indistinguishable in ADDH patients with and without a comorbid disorder or familial ADDH. Cases of "pure" ADDH (lacking comorbidity with depression, anxiety, or conduct disorder and having a positive family history of ADDH) showed a trend toward lesser placebo responses and a corresponding greater DMI-placebo difference. These findings suggest that (1) DMI is effective in simple, noncomorbid cases, (2) DMI is not selective for comorbid cases, but (3) a response to DMI can be obtained even in complex cases of ADDH with associated comorbidity.
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Psychiatry and political repression in the Soviet Union. THE AMERICAN PSYCHOLOGIST 1982. [PMID: 7149424 DOI: 10.1037//0003-066x.37.10.1105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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