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1.
Epidemiol Psychiatr Sci ; 28(4): 389-396, 2019 Aug.
Article in English | MEDLINE | ID: mdl-30479242

ABSTRACT

AimsIn low- and middle-income countries (LMIC) in general and sub-Sahara African (SSA) countries in particular, there is both a large treatment gap for mental disorders and a relative paucity of empirical evidence about how to fill this gap. This is more so for severe mental disorders, such as psychosis, which impose an additional vulnerability for human rights abuse on its sufferers. A major factor for the lack of evidence is the few numbers of active mental health (MH) researchers on the continent and the distance between the little evidence generated and the policy-making process. METHODS: The Partnership for Mental Health Development in Africa (PaM-D) aimed to bring together diverse MH stakeholders in SSA, working collaboratively with colleagues from the global north, to create an infrastructure to develop MH research capacity in SSA, advance global MH science by conducting innovative public health-relevant MH research in the region and work to link research to policy development. Participating SSA countries were Ghana, Kenya, Liberia, Nigeria and South Africa. The research component of PaM-D focused on the development and assessment of a collaborative shared care (CSC) program between traditional and faith healers (T&FHs) and biomedical providers for the treatment of psychotic disorders, as a way of improving the outcome of persons suffering from these conditions. The capacity building component aimed to develop research capacity and appreciation of the value of research in a broad range of stakeholders through bespoke workshops and fellowships targeting specific skill-sets as well as mentoring for early career researchers. RESULTS: In the research component of PaM-D, a series of formative studies were implemented to inform the development of an intervention package consisting of the essential features of a CSC for psychosis implemented by primary care providers and T&FHs. A cluster randomised controlled trial was next designed to test the effectiveness of this package on the outcome of psychosis. In the capacity-building component, 35 early and mid-career researchers participated in the training workshops and several established mentor-mentee relationships with senior PaM-D members. At the end of the funding period, 60 papers have been published and 21 successful grant applications made. CONCLUSION: The success of PaM-D in energising young researchers and implementing a cutting-edge research program attests to the importance of partnership among researchers in the global south working with those from the north in developing MH research and service in LMIC.


Subject(s)
Capacity Building , Health Personnel , Health Services Research/organization & administration , Intersectoral Collaboration , Mental Disorders , Program Development/methods , Africa South of the Sahara , Cooperative Behavior , Delivery of Health Care , Health Policy , Humans , Mental Disorders/therapy , Mental Health , Research Personnel/organization & administration
2.
J Affect Disord ; 225: 413-421, 2018 01 01.
Article in English | MEDLINE | ID: mdl-28850856

ABSTRACT

BACKGROUND: Low-and-Middle-Income-Countries (LMICs) account for 75% of global suicides. While primary care populations in high-income countries (HIC) typically have higher prevalence of suicidal behavior relative to general populations, few studies have explored suicidal behavior among general medical outpatients in LMICs. This study addresses the research gap by characterizing potential risk factors for suicidal ideation in a large general medical outpatient setting in rural Kenya. METHODS: A cross-sectional study of adult general medical outpatients attending a rural sub-county hospital in Kaloleni, Kenya. Primary outcomes included major depressive disorder (MDD), posttraumatic stress disorder (PTSD) and suicidal behavior measured by the Mini International Neuropsychiatric Interview (MINI 5.0). We use binary logistic regression to model suicidality, mental disorders, intimate partner violence, and lifetime abuse. RESULTS: 394 outpatients completed the assessment. The prevalence of SI over the past month was 20%. 18% of those with suicidal ideation over the past month also attempted suicide in the past month. Participants who met criteria for MDD (suicidality item removed) were 19 times [CI: 4.56, 79.05] more likely to report suicidal ideation compared to those without MDD (adjusted odds ratio 12.15 [CI: 2.66, 55.49]). LIMITATIONS: This was a cross sectional study design with convenience sampling and hence vulnerable to selection and recall bias. CONCLUSION: The prevalence of SI and its strong association with actual suicide attempt in this population, make an urgent public health case for intervention. These data identify MDD as a highly significant correlate of SI.


Subject(s)
Outpatients/statistics & numerical data , Rural Population/statistics & numerical data , Suicidal Ideation , Suicide/statistics & numerical data , Adolescent , Adult , Cross-Sectional Studies , Depressive Disorder, Major/epidemiology , Depressive Disorder, Major/psychology , Female , Humans , Kenya/epidemiology , Male , Middle Aged , Odds Ratio , Outpatients/psychology , Prevalence , Risk Factors , Suicide/psychology , Suicide, Attempted/psychology , Suicide, Attempted/statistics & numerical data , Young Adult
3.
Article in English | MEDLINE | ID: mdl-28596862

ABSTRACT

BACKGROUND: There have been no household surveys of adult attention deficit and hyperactivity disorder (ADHD) in Kenya, and only one in sub-Saharan Africa. METHODS: Data on ADHD was used from a household survey of mental disorders and their associated risk factors conducted in Maseno area (population 70 805), near Lake Victoria in Kenya, using a demographic surveillance site as the sample frame, as part of a wider survey of mental health, malaria and immunity A total of 1190 households were selected, and 1158 adult participants consented to the study while 32 refused to participate in the study interviews, giving a response rate of 97.3%. ADHD symptoms were assessed with the WHO Adult ADHD Self-Report Scale (ASRS) Screener. RESULTS: This survey found that the overall prevalence of ADHD using the ASRS was 13.1%. This suggests a high level of ADHD in the Kenyan population which needs to be further investigated for its impact on adult mental health. In the adjusted analysis, increased odds ratios (ORs) were found in those with higher assets (OR 1.7, p = 0.023), those with life events (OR 2.4, p = 0.001 for those with 2-3 life events and OR 2.6, p < 0.001 for those with 4 or more life events), and those with common mental disorders (OR 2.3, p = 0.001). CONCLUSION: The study demonstrates the magnitude of ADHD symptoms as a public health issue, relevant for health worker training, and the importance of further research into its prevalence in adults and associated risk factors.

4.
J Psychiatr Ment Health Nurs ; 15(3): 246-52, 2008 Apr.
Article in English | MEDLINE | ID: mdl-18307654

ABSTRACT

To explore structure and process factors which influence patients' perception of quality inpatient psychiatric nursing care at Mathari hospital. This was a cross-sectional study of 236 inpatients selected by stratified random sampling. Competence to give consent was determined by a minimum score of 24 on Mini Mental State Examination. Patients were interviewed using a semi-structured questionnaire. Differences in proportions of variables were determined by calculating confidence interval and summary chi-squared statistics. P-values of < or =0.05 were considered significant. Majority of patients (87%) were aged 20-49 years with 43% having stayed in the ward for over a month. Structure factors related to patients' perception of care included physical environment, being happy with the way the ward looked was significantly related to satisfaction with care (chi(2) = 5.506, P = 0002). Process factors significantly related to patients' satisfaction with care included nurses providing patients with information on prescribed medicines (chi(2) = 10.50, P = 00012). Satisfaction with care was positively related to ability to recommend someone for admission in the same ward (chi(2) = 20.2, P = 00001). Structure and process factors identified as influencing patients' perception of care were physical environment and nurses' qualities that fit within the characteristics of Peplau's Interpersonal Relations Theory.


Subject(s)
Mental Disorders/nursing , Nurse-Patient Relations , Outcome and Process Assessment, Health Care , Patient Satisfaction , Adolescent , Adult , Child , Cross-Sectional Studies , Female , Humans , Inpatients , Kenya , Male , Middle Aged , Psychiatric Nursing
5.
East Afr Med J ; 84(9): 450-2, 2007 Sep.
Article in English | MEDLINE | ID: mdl-18074964

ABSTRACT

The desire for self-mutilation in the absence of any discernible psychopathology is relatively rare. Self-mutilation is most commonly a manifestation of an underlying psychopathology such as depression, schizophrenia, personality disorder, transexuality, body dysmorphic disorder and factitious disorder. In this article, a case in which a 29-year-old single Kenyan lady of African origin demanded a surgical operation to modify and reduce the size of her external genitalia is presented. Although female genital mutilation is still widespread in the country, this case is of interest in that the woman did not seek the usual circumcision but sought to specifically reduce the size of her labia minora so that she could feel like a normal woman. The unique challenges in her management are discussed. Possible aetiological factors in patients who demand surgical removal or modification of parts of their bodies without an obvious cause is discussed.


Subject(s)
Genitalia, Female/surgery , Self Concept , Self Mutilation , Somatoform Disorders , Surgery, Plastic , Adult , Female , Humans , Vulva/surgery
6.
East Afr Med J ; 84(4): 151-5, 2007 Apr.
Article in English | MEDLINE | ID: mdl-17894248

ABSTRACT

OBJECTIVES: To determine the prevalence and distribution of psychiatric morbidity among convicted male sex offenders and to establish factors associated with sexual offending. DESIGN: A Cross-sectional descriptive survey. SETTING: Kamiti Maximum Security Prison, Nairobi, Kenya. SUBJECTS: Seventy six male convicts. RESULTS: Forty seven (61.8%) had defilement-related convictions, 23 (30.3%) had rape-related, while six (7.9%) had other convictions. Twenty seven (35.5%) out of 76 had a DSM-IV Axis I disorder, majority of whom (71.1%) were dependent on or abused substances, and 26 (34.2%) had an Axis II disorder, most of whom had antisocial and impulsive personality disorders (46.2%). Of these 12 (15.8%) had an Axis I diagnosis alone, 11 (14.5%) had an Axis II diagnosis alone while 15 (19.7%) had both Axis I and II diagnoses, that is, co-morbidity. Exposure to erotica was statistically associated with both Axis I and II (p = 0.02 and p = 0.0003 respectively) and pre-occupation with thoughts about sex was associated with Axis II disorders (p = 0.01). CONCLUSIONS: Most of those with psychiatric morbidity targeted children and had antisocial or impulsive personality disorder. Awareness campaigns to enlighten the public of the fact that children are the most common victims and research to determine ways of treating and rehabilitating sexual offenders could reduce the vice.


Subject(s)
Mental Disorders/epidemiology , Prisoners/psychology , Sex Offenses/psychology , Adolescent , Adult , Aged , Comorbidity , Cross-Sectional Studies , Diagnosis, Dual (Psychiatry) , Diagnostic and Statistical Manual of Mental Disorders , Disruptive, Impulse Control, and Conduct Disorders/epidemiology , Erotica/psychology , Humans , Kenya/epidemiology , Male , Middle Aged , Paraphilic Disorders/epidemiology , Personality Disorders/epidemiology , Prisoners/statistics & numerical data , Psychiatric Status Rating Scales , Sex Offenses/statistics & numerical data , Substance-Related Disorders/epidemiology , Surveys and Questionnaires
7.
Article in English | AIM (Africa) | ID: biblio-1263443

ABSTRACT

Background: The prevalence and frequency of bullying in Nairobi public secondary schools in particular and in Kenyan schools in general is not known. Knowledge of the extent of the problem is essential in developing effective interventions. Aim: To study the prevalence and frequency of bullying in Nairobi public secondary schools; Kenya. Methods: A self-report sociodemographic questionnaire and the Olweus Bullying Questionnaire of 1991 were administered to 1 012 students from a stratified sample of public secondary schools in Nairobi. Results: Between 63.2(640) and 81.8(828) of students reported various types of bullying; both direct and indirect; with significant variations found for sex; age; class and year of study; whether in day or boarding school; and the place where bullied. Being bullied was significantly associated with becoming a bully; in turn. Discussion: Bullying is highly prevalent in Kenyan schools. Further studies are needed to characterise bullies and victims in terms of personality and environmental factors that may be associated with or conducive to bullying; as well as to determine the long-term prognosis for both bullies and victims. Further research is also required to determine the most appropriate intervention


Subject(s)
Bullying , Prevalence , Schools
8.
Article in English | AIM (Africa) | ID: biblio-1263445

ABSTRACT

Background: The prevalence and frequency of bullying in Nairobi public secondary schools in particular and in Kenyan schools in general is not known. Knowledge of the extent of the problem is essential in developing effective interventions. Aim: To study the prevalence and frequency of bullying in Nairobi public secondary schools; Kenya. Methods: A self-report sociodemographic questionnaire and the Olweus Bullying Questionnaire of 1991 were administered to 1 012 students from a stratified sample of public secondary schools in Nairobi. Results: Between 63.2(640) and 81.8(828) of students reported various types of bullying; both direct and indirect; with significant variations found for sex; age; class and year of study; whether in day or boarding school; and the place where bullied. Being bullied was significantly associated with becoming a bully; in turn. Discussion: Bullying is highly prevalent in Kenyan schools. Further studies are needed to characterise bullies and victims in terms of personality and environmental factors that may be associated with or conducive to bullying; as well as to determine the long-term prognosis for both bullies and victims. Further research is also required to determine the most appropriate intervention


Subject(s)
Bullying , Prevalence , Schools
9.
East Afr Med J ; 83(5): 280-7, 2006 May.
Article in English | MEDLINE | ID: mdl-16866223

ABSTRACT

OBJECTIVES: To profile and quantify the psychometric properties of the NOK (Ndetei-Othieno-Kathuku) scale against internationally used Gold-standards and benchmarks for mild psychiatric disorders and post-traumatic stress disorders and to provide a potential easy to administer culture sensitive instrument for screening and assessing those with possible psychiatric disorders for the Kenyan and similar social-cultural situations. DESIGN: Cross-Sectional quantitative study. SETTING: A psychiatric clinical consultation setting and Kyanguli Secondary School psychotrauma counselling clinical set-up. SUBJECTS: Survivors of the Nairobi USA Embassy bombing who were referred for psychiatric treatment and survivors of a fire disaster from a rural Kenyan school (Kyanguli School fire disaster) including students, parents of the diseased children and staff members. RESULTS: Positive correlation was found between the NOK and all the instruments. The highest correlations were between the NOK and the BDI and SCL-90 (r = 0.557 to 0.786). The differences between the NOK scores among the different groups were statistically significant (F ratio = 13.54 to 160.34, p < 0.01). The reliability coefficient (internal consistency) of the scale, alpha = 0.9733. Other item statistics and correlations of the scale are discussed. CONCLUSION: It is concluded that the NOK has high concurrent and discriminant validity as well as a high internal consistency and that it can be used for the rapid assessment of psychotrauma victims of all age groups; and stress in general in similar age groups in the local setting. It is culture appropriate and sensitive.


Subject(s)
Disasters , Mental Disorders/diagnosis , Psychometrics , Stress Disorders, Post-Traumatic/diagnosis , Survivors/psychology , Adolescent , Adult , Aged , Cross-Sectional Studies , Female , Humans , Kenya , Male , Middle Aged , Parents/psychology , Reproducibility of Results
10.
East Afr Med J ; 82(2): 79-84, 2005 Feb.
Article in English | MEDLINE | ID: mdl-16122096

ABSTRACT

OBJECTIVES: To describe the psychiatric services offered at Kenyatta National Hospital and the types of patients and cases seen at Kenyatta National Hospital. DESIGN: A retrospective study based on case notes and other hospital records. SETTING: Kenyatta National Hospital, Nairobi, Kenya. SUBJECTS: All patients seen in the various psychiatric clinics and those who attended the Patient Support Centre Unit in the hospital in the year 2002. RESULTS: In the year 2002, 598,119 patients were treated at KNH out of which 6,878 (1.15%) were seen in the psychiatric clinics: 1,709 adults and 1,412 children were referred to the various psychiatric clinics. At the hospital's Patient Support Centre (PSC) 3,454 patients were seen, mostly for pre and post-HIV test counselling. Consultations from the wards accounted for 332 (9.6%) of the cases referred to PSC. The main diagnoses among the latter in order of frequency were alcohol related psychiatric disorders, acute and transient psychoses, depressive disorders, dissociative and conversion disorders and dementia. CONCLUSION: In view of the high load of acute and transient psychotic states, as well as substance related disorders, it is recommended that the hospital should establish acute wards for the comprehensive management of such patients. An alcohol and drug detoxification and rehabilitation centre should also be developed at the hospital. Services to those with HIV related disorders should also be improved.


Subject(s)
Mental Disorders/epidemiology , Adult , Child , Humans , Kenya/epidemiology , Mental Health Services , Referral and Consultation , Retrospective Studies
11.
East Afr Med J ; 82(9): 452-6, 2005 Sep.
Article in English | MEDLINE | ID: mdl-16619718

ABSTRACT

OBJECTIVE: To establish the magnitude of psychiatric disorders among leprosy patients in western Kenya. DESIGN: A cross-sectional descriptive study. SETTING: Busia and Teso districts in western Kenya. SUBJECTS: A sample of 152 male and female, adult leprosy patients. RESULTS: The prevalence of psychiatric morbidity (PM) was 53.29%. The PM was positively correlated with physical disability and marital status but not with age, sex, education, type of leprosy, or duration of the illness. The prevalence of psychiatric morbidity was lower among Kenyan leprosy patients compared to studies carried out in India (56% to 78%). It was high compared to the rate of psychiatric morbidity in those seeking medical help in primary health care centres in Kenya, which was recently estimated to be 10%. CONCLUSION: The prevalence of PM in leprosy patients in western Kenya was lower than that in studies carried out in India. This could be attributed to de-institutionalisation and re-integration of leprosy sufferers back into their local communities. Since the rate was more than double that in the general Kenyan population and seemed to be related to presence of physical disability, an appraisal of psychiatric services offered to these patients is needed.


Subject(s)
Leprosy/psychology , Mental Disorders/epidemiology , Adolescent , Adult , Aged , Aged, 80 and over , Child , Cross-Sectional Studies , Disability Evaluation , Female , Humans , Kenya/epidemiology , Leprosy/physiopathology , Male , Marital Status , Mental Disorders/etiology , Middle Aged , Prevalence , Risk Assessment , Risk Factors , Surveys and Questionnaires
12.
East Afr Med J ; 81(7): 362-6, 2004 Jul.
Article in English | MEDLINE | ID: mdl-15490709

ABSTRACT

OBJECTIVES: To determine the prevalence rate of post traumatic stress disorder (PTSD) and associated risk factors among motor vehicle accident (MVA) survivors attending the orthopaedic and trauma clinic at Kenyatta National Hospital, Nairobi. DESIGN: A cross-sectional study. SETTING: Kenyatta National Hospital, Nairobi. SUBJECTS: One hundred and ninety seven adult males and sixty seven female patients. METHOD: The 264 patients were interviewed using a questionnaire to collect the socio-demographic data, the Self Rating Questionnaire (SRQ) and the Impact of Event Scale-Revised (IES-R). Diagnosis was made using the Diagnostic and Statistical Manual (DSM-IV). RESULTS: The mean age was 34.63+/-12.71 years (range 18-65). Overall, the prevalence rate of PTSD was 13.3%. None of the cases had been previously diagnosed as having PTSD. Females had a higher rate of 17.9% (n = 67), compared to the males 11.7% (n=197). The majority of those with PTSD (42.9%) were young, 20 - 29 years. Other risk factors were having post-primary education (62.9%), experiencing the first motor vehicle accident (14.1%), previous psychiatric illness, and other medical illnesses. The type of accident, role/status and immediate reactions to the accident were not significant. CONCLUSIONS: PTSD following motor vehicle accidents is common. Although the MVA survivors do develop significant rates of PTSD, it is not easy to identify those at risk but some of the parameters documented in this study may help. A multi disciplinary approach is therefore essential in the management of the RTA survivors at the orthopaedic and trauma clinics if their physical and psychological needs are to be adequately addressed


Subject(s)
Accidents, Traffic/psychology , Stress Disorders, Post-Traumatic/epidemiology , Stress Disorders, Post-Traumatic/etiology , Adolescent , Adult , Aged , Female , Humans , Kenya/epidemiology , Male , Middle Aged , Risk Factors , Socioeconomic Factors
14.
East Afr Med J ; 79(10): 547-9, 2002 Oct.
Article in English | MEDLINE | ID: mdl-12635762

ABSTRACT

OBJECTIVE: To determine the prevalence of tardive dyskinesia among psychiatric in-patients. DESIGN: A cross-sectional survey. SETTING: Mathari Hospital, Nairobi, the main psychiatric referral hospital in Kenya. SUBJECTS: Two hundred and two randomly selected in-patients seen in the hospital between January and April 2000. RESULTS: The prevalence of tardive dyskinesia was 11.9%. Neither the psychiatric diagnosis nor the sex was significantly associated with tardive dyskinesia. The antipsychotic dosage was also not associated with tardive dyskinesia but an increase in age was significantly associated with the abnormal movements. CONCLUSION: The prevalence rate of tardive dyskinesia among patients at Mathari Hospital is much lower than that found in western countries but similar to that from Asian studies. These findings indicate the possibility of racial differences in the aetiology of TD. Prospective cross-racial studies are necessary to confirm these findings.


Subject(s)
Antipsychotic Agents/adverse effects , Dyskinesia, Drug-Induced/epidemiology , Dyskinesia, Drug-Induced/etiology , Adolescent , Adult , Age Distribution , Aged , Cross-Sectional Studies , Dyskinesia, Drug-Induced/diagnosis , Female , Hospitals, Psychiatric , Humans , Kenya/epidemiology , Male , Mental Disorders/diagnosis , Mental Disorders/drug therapy , Middle Aged , Population Surveillance , Prevalence , Retrospective Studies , Risk Factors , Sex Distribution
15.
East Afr Med J ; 78(4): 204-7, 2001 Apr.
Article in English | MEDLINE | ID: mdl-12002072

ABSTRACT

OBJECTIVES: To determine the psychological problems the non-psychiatric doctors commonly encounter, the treatment offered and/or referrals made and to determine any obstacles met in providing psychiatric treatment or making referrals. DESIGN: Cross-sectional survey. SETTING: Kenyatta National Hospital, Nairobi, Kenya. SUBJECTS: Doctors working at Kenyatta National Hospital. RESULTS: One hundred and thirty (94 males and 36 females) doctors submitted usable questionnaires. Seventy eight per cent of the respondents were below 35 years and 57 had less than five years experience. The commonest psychiatric disorders seen by doctors were anxiety, depression, psychosomatic disorders and organic psychoses similar to findings in previous prevalence studies. Drugs therapy with anxiolytics antidepressants and antipsychotics were commonly utilised. Brief counselling was the verbal form of treatment most commonly used. Referral to mental health workers was less often done. Obstacles cited by the doctors were the patients' resistance to referral, lack of coordination and insufficient knowledge to treat the disorders. CONCLUSION: The doctors recognise that psychiatric disorders are common among their patients but they have major obstacles in managing them. These findings are discussed and remedial measures suggested.


Subject(s)
Family Practice , Mental Disorders/therapy , Practice Patterns, Physicians' , Referral and Consultation , Adult , Clinical Competence , Comorbidity , Cross-Sectional Studies , Family Practice/education , Family Practice/standards , Female , Health Services Accessibility , Humans , Kenya , Male , Mental Disorders/classification , Middle Aged , Psychotropic Drugs/therapeutic use , Treatment Refusal/psychology
16.
East Afr Med J ; 77(11): 592-5, 2000 Nov.
Article in English | MEDLINE | ID: mdl-12862104

ABSTRACT

OBJECTIVES: To estimate the prevalence and pattern of substance use among patients attending primary health centres in urban and rural areas of Kenya. DESIGN: A descriptive cross-sectional prevalence survey. SETTING: Urban health centres of Jericho and Kenyatta University (KU) and rural health centres in Muranga district. SUBJECTS: One hundred and fifty adult patients (seventy eight males and seventy two females) were included in the study. INTERVENTION: Semi-structured questionnaires and the DSM IV diagnostic criteria were used to record the socio-demographic data and to determine substance dependence or abuse. RESULTS: The substances commonly used in descending order of frequency were alcohol, tobacco, khat and cannabis. Only alcohol and tobacco were extensively used. Lifetime prevalence rates of alcohol use for the two urban health centres were 54% and 62% compared to 54% for the rural health centres. For tobacco the lifetime prevalence rates were 30% for Jericho, 28% for KU and 38% for Muranga. The differences between the rural and urban samples were not statistically significant. More males than females had used alcohol (average lifetime use 80.8% for males compared to 30.6% for females: p<0.05) and tobacco (average lifetime use 56.4% for males compared to 5.6% for females p<0.05). CONCLUSION: The rates of substance abuse were generally low with the exception of alcohol and tobacco. Socio-cultural factors might be responsible for the differences noted. It is suggested that preventive measures and education should be emphasised at the primary care level.


Subject(s)
Ambulatory Care Facilities/statistics & numerical data , Outpatients/statistics & numerical data , Rural Health Services/statistics & numerical data , Substance-Related Disorders/epidemiology , Urban Health Services/statistics & numerical data , Adult , Cross-Sectional Studies , Female , Humans , Kenya/epidemiology , Male , Prevalence
17.
J Infect Dis ; 180(6): 2069-73, 1999 Dec.
Article in English | MEDLINE | ID: mdl-10558973

ABSTRACT

Immunological and clinical profiles were evaluated in 2 groups: human immunodeficiency virus (HIV)-uninfected and HIV-infected patients, with newly diagnosed pulmonary tuberculosis (TB), and tuberculin-skin-test-reactive healthy control subjects. HIV-uninfected patients with TB were also followed up longitudinally during and after chemotherapy. At the time of diagnosis, purified protein derivative (PPD)-stimulated production of interferon (IFN)-gamma by peripheral blood mononuclear cells from TB patients was depressed, compared with that of healthy control subjects, whereas levels of transforming growth factor (TGF)-beta and interleukin (IL)-10 were increased. In longitudinal studies, PPD stimulated production of IL-10 and TGF-beta returned to baseline by 3 months, whereas IFN-gamma production remained depressed for at least 12 months. These data indicate that the immunosuppression of TB is not only immediate and apparently dependent (at least in part) on immunosuppressive cytokines early during the course of Mycobacterium TB infection but is also long lasting, presumably relating to a primary abnormality in T-cell function.


Subject(s)
Cytokines/biosynthesis , HIV Infections/complications , Interferon-gamma/biosynthesis , Mycobacterium tuberculosis/immunology , T-Lymphocytes/immunology , Tuberculosis, Pulmonary/immunology , Adolescent , Adult , Antibodies, Bacterial/blood , Antitubercular Agents/therapeutic use , Coculture Techniques , Cytokines/immunology , Humans , Interleukin-10/biosynthesis , Interleukin-10/immunology , Longitudinal Studies , Middle Aged , Transforming Growth Factor beta/biosynthesis , Transforming Growth Factor beta/immunology , Tuberculin/immunology , Tuberculin Test , Tuberculosis, Pulmonary/complications , Tuberculosis, Pulmonary/drug therapy
18.
Infect Immun ; 67(11): 5730-5, 1999 Nov.
Article in English | MEDLINE | ID: mdl-10531222

ABSTRACT

Mycobacterium tuberculosis is associated with the activation of cytokine circuits both at sites of active tuberculosis in vivo and in cultures of mononuclear cells stimulated by M. tuberculosis or its components in vitro. Interactive stimulatory and/or inhibitory pathways are established between cytokines, which may result in potentiation or attenuation of the effects of each molecule on T-cell responses. Here we examined the interaction of transforming growth factor beta1 (TGF-beta1) and interleukin-10 (IL-10) in purified protein derivative (PPD)-stimulated human mononuclear cell cultures in vitro. TGF-beta1 induced monocyte IL-10 (but not tumor necrosis factor alpha) production (by 70-fold, P < 0.02) and mRNA expression in the absence but not in the presence of PPD. Both exogenous recombinant (r) IL-10 and rTGF-beta1 independently suppressed the production of PPD-induced gamma interferon (IFN-gamma) in mononuclear cells from PPD skin test-positive individuals. Synergistic suppression of IFN-gamma in cultures containing both rTGF-beta1 and rIL-10 was only seen when the responder cell population were peripheral blood mononuclear cells (PBMC) and not monocyte-depleted mononuclear cells and when PBMC were pretreated with rTGF-beta1 but not with rIL-10. Suppression of PPD-induced IFN-gamma in PBMC containing both rTGF-beta1 (1 ng/ml) and rIL-10 (100 pg/ml) was 1.5-fold higher (P < 0.05) than cultures containing TGF-beta1 alone and 5.7-fold higher (P < 0.004) than cultures containing IL-10 alone. Also, neutralization of endogenous TGF-beta1 and IL-10 together enhanced PPD-induced IFN-gamma in PBMC in a synergistic manner. Thus, TGF-beta1 and IL-10 together potentiate the downmodulatory effect on M. tuberculosis-induced T-cell production of IFN-gamma, and TGF-beta1 alone enhances IL-10 production. At sites of active M. tuberculosis infection, these interactions may be conducive to the suppression of mononuclear cell functions.


Subject(s)
Interleukin-10/biosynthesis , Mycobacterium tuberculosis/immunology , Transforming Growth Factor beta/pharmacology , Animals , Humans , Interferon-gamma/biosynthesis , Interleukin-10/pharmacology , Rats , Receptors, Interleukin/analysis , Receptors, Interleukin-10 , Tuberculin/immunology , Tumor Necrosis Factor-alpha/biosynthesis
19.
Sex Transm Infect ; 74(4): 265-70, 1998 Aug.
Article in English | MEDLINE | ID: mdl-9924466

ABSTRACT

BACKGROUND: Interferon alfa (IFN-alpha) exhibits dose related in vitro activity against human immunodeficiency virus (HIV), with complete inhibition of HIV replication at IFN-alpha concentrations > or = 256 IU/ml. In mid-1990, Kenyan investigators reported that oral administration of an extremely low dose (150 IU/day) of natural human (nHu) IFN-alpha resulted in complete alleviation of AIDS related complex and AIDS symptoms and resolution of opportunistic infections without additional treatment. Moreover, loss of HIV antibody seropositivity was reported in approximately 10% of treated patients. Subsequent small studies failed to substantiate these spectacular claims, but controversy on the efficacy of this treatment persisted. METHODS: We studied 559 adult Ugandan patients with WHO stage 2-4 HIV infection and a Karnofsky performance score of more than 50, who had not received any drugs with antiretroviral activity in the previous 3 months. The patients were randomly assigned in a double blind fashion either to 150 IU oral nHuIFN-alpha/day or placebo. The duration of treatment was extended from 28 weeks to 60 weeks 9 months after enrollment had started. At that time 112 subjects had already received 28 weeks of treatment and been discontinued from the study. RESULTS: Both study groups were comparable with respect to all baseline characteristics studied, except that the nHuIFN-alpha group had slightly lower absolute CD4+ lymphocyte counts (median 60.7 x 10(6)/l) than the placebo group (median 85.3 x 10(6)/l) (p = 0.033). Therefore, all analyses were adjusted for CD4+ lymphocyte counts at entry. In both treatment groups there was relentless progression of HIV disease. Subjects treated with nHuIFN-alpha and placebo had similar mortality, disease progression rates, decline of CD4+ lymphocyte counts and Karnofsky performance scores, and prevalence of symptoms. No patient reverted to HIV-1 seronegative antibody status. Serious adverse events were not seen. Quality control of the study medication documented that the active drug indeed contained IFN-alpha activity. CONCLUSIONS: The current large, randomised, double blind, placebo controlled study did not show any benefit from oral treatment with 150 IU nHuIFN-alpha/day in a population of African patients with symptomatic HIV infection.


Subject(s)
Acquired Immunodeficiency Syndrome/drug therapy , Antiviral Agents/administration & dosage , Interferon-alpha/administration & dosage , Acquired Immunodeficiency Syndrome/immunology , Administration, Oral , Adolescent , Adult , Aged , Antiviral Agents/adverse effects , CD4 Lymphocyte Count , Disease Progression , Double-Blind Method , Female , Follow-Up Studies , Humans , Interferon-alpha/adverse effects , Male , Middle Aged , Survival Analysis , Treatment Failure
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