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1.
HIV AIDS (Auckl) ; 11: 61-67, 2019.
Article in English | MEDLINE | ID: mdl-31118824

ABSTRACT

Background: The burden of the people living with human immunodeficiency virus (HIV) infection and the acquired immunodeficiency syndrome (AIDS) is largely borne by communities in Sub-Saharan Africa. The rate of kidney disease is increasing amongst HIV patients and occurs more often in patients with advanced stage of the disease with lower CD4 counts and associated with a high rate of morbidity and mortality. The objective of this study is to determine the prevalence and predictors of chronic kidney disease (CKD) amongst HIV patients on highly active antiretroviral therapy (HAART) at the University of Calabar Teaching Hospital, Calabar. Materials and methods: This was a cross-sectional study that was carried out over a 4-month period from May to August 2018. In all, a total of 118 patients with HIV on HAART were recruited into the study in a consecutive manner and their serum creatinine measured with the calculation of estimated glomerular filtration rate (eGFR). Other data collected were sex, age, weight, height, body mass index (BMI), waist hip ratio (WHR), packed cell volume, CD4 count etcetera. Data collected were inputted and analyzed with SPSS version 18, and statistical significance was taken to be p<0.05. Results: There were more females (69.5%) amongst the HIV participants and the prevalence of CKD was 15.3%. The risk factors seen to be associated with CKD were lower levels of CD4 count below 200 cells/µl, lower PCV, weight, BMI, and eGFR. Also, higher levels of WHR and creatinine were associated with CKD. Factors directly correlated with CKD were weight, BMI and CD4 count levels, while creatinine level was inversely correlated with CKD. However, a logistic regression model showed only creatinine to be a predictor of CKD. Conclusion: HIV patients on antiretroviral therapy, mainly the highly active antiretroviral therapy (HAART) have a relatively high prevalence of CKD of 15.3% and high level of serum creatinine was predictive of CKD in the logistic regression model in our study.

2.
Open Access Maced J Med Sci ; 6(6): 1153-1158, 2018 Jun 20.
Article in English | MEDLINE | ID: mdl-29983819

ABSTRACT

BACKGROUND: Maternal mortality ratios (MMR) are still unacceptably high in many low-income countries especially in sub-Saharan Africa. MMR had been reported to have improved from an initial 3,026 per 100,000 live births in 1999 to 941 in 2009, at the University of Calabar Teaching Hospital (UCTH), Calabar, a tertiary health facility in Nigeria. Post-partum haemorrhage and hypertensive diseases of pregnancy have been the common causes of maternal deaths in the facility. AIM: This study was aimed at determining the trend in maternal mortality in the same facility, following institution of some facility-based intervention measures. METHODOLOGY: A retrospective study design was utilised with extraction and review of medical records of pregnancy-related deaths in UCTH, Calabar, from January 2010 to December 2014. The beginning of the review period coincided with the period the "Woman Intervention Trial" was set up to reduce maternal mortality in the facility. This trial consists of the use of Tranexamic acid for prevention of post-partum haemorrhage, as well as more proactive attendance to parturition. RESULTS: There were 13,605 live births and sixty-one (61) pregnancy-related deaths in UCTH during the study period. This yielded a facility Maternal Mortality Ratio of 448 per 100,000 live births. In the previous 11-year period of review, there was sustained the decline in MMR by 72.9% in the initial four years (from 793 in 2010 to 215 in 2013), with the onset of resurgence to 366 in the last year (2014). Mean age at maternal death was 27 ± 6.5 years, with most subjects (45, 73.8%) being within 20-34 years age group. Forty-eight (78.7%) were married, 26 (42.6%) were unemployed, and 33 (55.7%) had at least secondary level of education. Septic abortion (13, 21.3%) and hypertensive diseases of pregnancy (10, 16.4%) were the leading causes of death. Over three quarters (47, 77.0%) had not received care from any health facility. Most deaths (46, 75.5%) occurred between 24 and 97 hours of admission. CONCLUSION: Compared with previous trends, there has been a significant improvement in maternal mortality ratio in the study setting. There is also a significant change in the leading cause of maternal deaths, with septic abortion and hypertensive disease of pregnancy now replacing post-partum haemorrhage and puerperal sepsis that was previously reported. This success may be attributable to the institution of the Woman trial intervention which is still ongoing in other parts of the world. There is, however, need to sustain effort at a further reduction in MMR towards the attainment of set sustainable development goals (SDGs), through improvement in the provision of maternal health services in low-income countries.

3.
Open Access Maced J Med Sci ; 6(5): 901-907, 2018 May 20.
Article in English | MEDLINE | ID: mdl-29875869

ABSTRACT

BACKGROUND: Studies have shown that administration of anthelmintic drugs in pregnancy can reduce the incidence of maternal anaemia; however, data on other maternal and perinatal outcomes are limited. AIM: This study was therefore conducted to evaluate the direct impact of mass deworming on delivery and perinatal outcome. MATERIAL AND METHODS: A total of 560 healthy pregnant women in their second trimester were randomised to receive a single dose of oral mebendazole (500 mg) and placebo. Each participant received the standard dose of iron supplement and malaria prophylaxis. They were followed up to delivery and immediate postpartum period to document the possible impact on maternal and perinatal outcomes. RESULTS: The prevalence of anaemia at term, 37 weeks gestation and above, among the treatment arm was 12.6% compared with 29.9% in the placebo arm (p < 0.001). Caesarean section rates was higher in the treated group and the placebo (p = 0.047). There were no statistically significant differences in incidences of postpartum haemorrhage (p = 0.119), Puerperal, pyrexia (p = 0.943), low birth weight (p = 0.556) asphyxia (p = 0.706) and perinatal death (p = 0.621). CONCLUSION: Presumptive deworming during the antenatal period can significantly reduce the incidence of peripartum anaemia. However, more studies may be needed to prove any positive perinatal outcome.

4.
Open Access Maced J Med Sci ; 5(3): 370-382, 2017 Jun 15.
Article in English | MEDLINE | ID: mdl-28698759

ABSTRACT

BACKGROUND: Increasing the percentage of maternal health service utilization in health facilities, through cost-removal policy is important in reducing maternal deaths. The Cross River State Government of Nigeria introduced a cost-removal policy in 2009, under the umbrella of "PROJECT HOPE" where free maternal health services are provided. Since its inception, there has been no formal evaluation of its effectiveness. AIM: This study aims to evaluate the effect of the free maternal health care program on the health care-seeking behaviours of pregnant women in Cross River State, Nigeria. METHOD: A mixed method approach (quantitative and qualitative methods) was used to describe the effect of free maternal health care intervention. The quantitative component uses data on maternal health service utilisation obtained from PROJECT HOPE and Nigeria Demographic Health Survey. The qualitative part uses Focus Group Discussions to examine women's perception of the program. RESULTS: Results suggest weak evidence of change in maternal health care service utilization, as 95% Confidence Intervals overlap even though point estimate suggest increase in utilization. Results of quantitative data show increase in the percentage of women accessing maternal health services. This increase is greater than the population growth rate of Cross River State which is 2.9%, from 2010 to 2013. This increase is likely to be a genuine increase in maternal health care utilisation. Qualitative results showed that women perceived that there have been increases in the number of women who utilize Antenatal care, delivery and Post Partum Care at health facilities, following the removal of direct cost of maternal health services. There is urban and rural differences as well as between communities closer to health facility and those further off. Perceived barriers to utilization are indirect cost of service utilization, poor information dissemination especially in rural areas, perceived poor quality of care at facilities including drug and consumables stock-outs, geographical barriers, inadequate health work force, and poor attitude of skilled health workers and lack of trust in the health system. CONCLUSION: Reasons for Maternal health care utilisation even under a cost-removal policy is multi-factorial. Therefore, in addition to fee-removal, the government must be committed to addressing other deterrents so as to significantly increase maternal health care service utilisation.

5.
Open Access Maced J Med Sci ; 5(2): 250-255, 2017 Apr 15.
Article in English | MEDLINE | ID: mdl-28507637

ABSTRACT

BACKGROUND: Routine iron and folic acid supplementation in pregnancy have been proved to be effective in reducing the prevalence and morbidities of anaemia. However, there is limited data regarding the prescription habits of physician obstetric care givers. AIM: This study set to investigate the attitudes and factors which influence the practice among physicians in University of Calabar Teaching Hospital (UCTH). MATERIAL AND METHODS: A questionnaire based cross-sectional survey was conducted among randomly recruited physician offering antenatal services between August and September 2015. Systemic sampling was used to select 70 doctors in the departmental duty roster. Data were presented in percentages and proportion. Chi-square test was used to test the association between variables. Statistical significance was set at p < 0.05. RESULTS: The response rate was 100%. The mean age of the respondents was 30.26 ± 6.67 years. All the respondents routinely prescribed haematinics to pregnant women but 34.3% of them did not prescribe to apparently healthy clients in their first trimester. Only 30% and 11.4% of them prescribed it in the postnatal and preconception periods respectively. Brands that contained iron, folate and vitamins as a single capsule were mostly favoured, and information about brands of drugs was mostly provided by the pharmaceutical sales representatives. Younger doctors were more likely to offer haematinics with nutritional counselling compared to older respondents. However, there was no significant relationship between haematinics prescription and sex (p = 0.3560), Age (p = 0.839), current professional status (p = 0.783), and client complaint of side effect of medication (p = 0.23). Oral medication was mostly utilised. CONCLUSION: Effort to effectively control anaemia in pregnancy should involve re-orientation of physician obstetric care providers especially about prenatal and postnatal medication and counselling.

6.
HIV AIDS (Auckl) ; 9: 19-24, 2017.
Article in English | MEDLINE | ID: mdl-28243150

ABSTRACT

BACKGROUND: The introduction of highly active antiretroviral therapy (HAART) has remarkably improved the prognosis of human immunodeficiency virus (HIV)-infected patients, at the expense of the development of long-term complications such as cardiovascular and renal diseases. Hypertension (HTN) is a major risk factor for cardiovascular diseases and its associated mortality. In this study, we aimed to determine the prevalence of HTN and to identify possible predictors among HIV-infected patients attending the HIV Special Treatment Clinic at the University of Calabar Teaching Hospital, Calabar. MATERIALS AND METHODS: A cross-sectional study was carried out over a 5-month period from February to July 2016. A total of 112 HIV-infected persons were consecutively recruited and their blood pressures were measured in two consecutive clinic visits. They were compared with the HIV-negative control group (n=309). Data collected were analyzed with SPSS 18, and statistical significance was set at P<0.05. RESULTS: There was a female preponderance in both the HIV-infected individuals and HIV-negative control group (57.5% vs. 57.4%). The mean ages were 39.3 and 33.9 years in HIV-infected and HIV-negative subjects, respectively. The risk factors that were associated with HTN in both groups were older age (>40 years), increased weight and body mass index (BMI), and presence of obesity. Male sex and duration of exposure to HAART and CD4 count levels >200 cells/mm3 were associated with HTN in HIV-infected patients, whereas the absence of family history of HTN was significantly associated with HTN in both groups. However, in a multivariate logistic regression, the predictors of HTN in both groups are absence of family history of HTN and older age in HIV-infected patients and HIV-negative subjects, respectively. CONCLUSION: Traditional risk factors such as older age, increased BMI, and obesity were linked to HTN in both HIV-infected and HIV-negative subjects, but higher CD4 count level and cumulative HAART exposure were associated with HTN in HIV-positive individuals. In a multivariate logistic regression, the predictors of HTN in both groups are absence of family history of HTN and older age in HIV-infected patients and HIV-negative subjects, respectively.

8.
Open Access Maced J Med Sci ; 3(2): 356-62, 2015 Jun 15.
Article in English | MEDLINE | ID: mdl-27275250

ABSTRACT

BACKGROUND: The mental health status of medical students has been proven to be poor compared to their peers in other disciplines and has led to grave personal and professional consequences. This subject has however remained largely unexplored in our medical school. AIM: The study was therefore conducted to assess the prevalence of mental health of medical students in the University of Calabar, Cross river state, Nigeria. METHODOLOGY: A descriptive cross-sectional survey of 451 randomly selected medical students from the pre-clinical and clinical levels of study in the University of Calabar. A self administered questionnaire including the GHQ12 was used to elicit information from the respondents. A score of ≥ 3 suggested poor mental while a score < 3 represented good mental health. Data were summarized using proportions, and χ2 test was used to explore associations between categorical variables. Level of significance was set at p < 0.05. RESULTS: The mean age of the respondents was 23.4 ± 4.3 years, 63.8% were males, 34.8% were from the preclinical and 65.2% from clinical levels of study. Based on the GHQ categorisation, 39.2% had a poor mental health status, compared to 60.8% with good mental health status. The factors significantly associated with poor mental health, were recent experience of mistreatment by trainers or colleagues, perceived inadequate monthly allowance and perception that medical training is stressful (p < 0.05). CONCLUSION: With more than a third of undergraduate medical trainees with traits of poor mental health, provision of accessible mental health services/counselling is strongly recommended early in their training.

9.
Int J Womens Health ; 6: 873-80, 2014.
Article in English | MEDLINE | ID: mdl-25342920

ABSTRACT

BACKGROUND: Prolonged and obstructed labor is a significant cause of maternal morbidity and mortality in Nigeria, one of the six countries contributing significantly to the global maternal mortality crisis. The use of the partograph would engender a remarkable reduction in the number of these deaths since abnormal markers in the progress of labor would be identified early on. OBJECTIVE: This study aimed to evaluate the non-physician obstetric caregivers' (OCGs) knowledge of partograph use, assess the extent of its use, determine the factors that impede its usage, and unravel the relationship between years of experience and partograph use among the respondents (OCGs) in General Hospital, Calabar, Nigeria. METHODOLOGY: Using a self-administered semi-structured questionnaire, a cross-sectional descriptive study was conducted among 130 purposely selected and consenting OCGs working in the General Hospital, Calabar, Nigeria. RESULTS: The majority of the respondents (70.8%) had good general knowledge of the partograph but lacked detailed and in-depth knowledge of the component parts of the partograph. Knowledge of partograph (χ(2) =12.05, P=0.0001) and partograph availability (χ(2) =56.5, P=0.0001) had a significant relationship with its utilization. Previous training (χ(2) =9.43, P=0.002) was significantly related to knowledge of partograph. Factors affecting utilization were: little or no knowledge of the partograph (85.4%), nonavailability (70%), shortage of staff (61.5%), and the fact that it is time-consuming to use (30%). CONCLUSION: Lack of detailed knowledge of the partograph, nonavailability of the partograph, poor staff numbers, and inadequate training are factors that work against the effective utilization of the partograph in the study facility. Usage of this tool for labor monitoring can be enhanced by periodic training, making partographs available in labor wards, provision of reasonable staff numbers, and mandatory institutional policy.

10.
Int J Family Med ; 2014: 105853, 2014.
Article in English | MEDLINE | ID: mdl-25298892

ABSTRACT

The challenge to maternal well-being with associated maternal wastages especially in labor has remained unsurmountable across the three tiers of health care delivery in Nigeria. This study aimed to determine and compare the factors that influence utilization of the partograph in primary, secondary, and tertiary health care delivery levels in Calabar, Nigeria. This was a descriptive study, using a self-administered semistructured questionnaire on 290 consenting nonphysician obstetric care workers, purposively recruited. The mean age of the respondents was 40.25 ± 8.68 with a preponderance of females (92.4%). Knowledge of the partograph and previous partograph training had statistically significant relationship with its utilization among respondents from the tertiary and general hospitals. The level of knowledge was higher among workers in the general hospital than those working in the university teaching hospital. Nurses/midwives in the three levels of care were significantly more knowledgeable in partograph use than other nonphysician obstetric care workers. Lack of detailed knowledge of the partograph, its nonavailability and poor staff strength in the study centers were factors militating against its ease of utilization. The authors recommend periodic in-service training and provision of partograph in labor rooms in all maternity wards in our environment.

11.
Afr J Reprod Health ; 18(1): 133-43, 2014 Mar.
Article in English | MEDLINE | ID: mdl-24796178

ABSTRACT

Adherence to HAART is necessary to achieve the best virologic response and lower the risk of drug resistance amongst People living with HIV/AIDS (PLHIV). However, there is limited documentation of adherence amongst patients on HAART in the south-south region of Nigeria. This study aimed to determine the prevalence and determinants of adherence to HAART amongst PLHIV in a rural setting in Cross River State. A descriptive cross-sectional study was conducted among 393 patients on HAART attending the Heart to Heart centre Ugep using an interviewer-administered questionnaire. Adherence was measured via self report and patients were termed adherent if they took at least 95% of prescribed doses. The self reported adherence rate based on a one week recall was 50.4%. The main reason for skipping doses were being busy (50.6%), simply forgetting to take medications (43.8%) and religious constraints (16%). Perceived improved health status [OR 2.7; CI: 1.37-5.39], Non use of herbal remedies, [OR 1.8; 95% CI: 1.23- 2.64] and ARV regimens devoid of dietary instructions [OR 1.49; 95% CI: 1.07- 2.06] were significant predictors of adherence. The adherence rate reported in this study was low. Appropriate adherence enhancing intervention strategies targeted at use of simplified ARV regimens and discouraging herbal use is strongly recommended.


Subject(s)
Antiretroviral Therapy, Highly Active , HIV Infections/drug therapy , Medication Adherence , Adult , Female , HIV Infections/epidemiology , Humans , Male , Middle Aged , Nigeria/epidemiology , Prevalence , Surveys and Questionnaires
12.
AIDS Behav ; 17(3): 1159-75, 2013 Mar.
Article in English | MEDLINE | ID: mdl-22271332

ABSTRACT

This study examined the socio-demographic and selected behavioral characteristics associated with self-perceived and epidemiologic notions of risk for acquiring STIs/HIV infection using data from a cross-sectional survey involving 346 consenting female military personnel from two cantonments in Southwestern Nigeria. Findings revealed significant discordance in participants' risk status based on the two assessment methods, with Kappa coefficients ranging from -0.021 to 0.115. Using epidemiologic assessment as the "gold standard", 45.4% of the study population were able to accurately assess their risk levels through self-perception with significant (P < 0.01) socio-demographic variations. Multivariate logistic regression analyses indicate that STIs/HIV risk models using both self-perceived and epidemiologic notions of risk were significantly determined by different set of covariates. It is recommended that STIs/HIV prevention intervention should integrate the identified covariates and be targeted at changing individual risk behaviors and perceptions, as well as the social contexts in which risky behaviors occur in the military population.


Subject(s)
HIV Infections/epidemiology , HIV Infections/transmission , Military Personnel/psychology , Perception , Risk Factors , Sexual Behavior , Sexually Transmitted Diseases/epidemiology , Sexually Transmitted Diseases/transmission , Adolescent , Adult , Cross-Sectional Studies , Female , HIV Infections/prevention & control , Health Knowledge, Attitudes, Practice , Humans , Male , Nigeria/epidemiology , Sexual Partners , Sexually Transmitted Diseases/prevention & control , Young Adult
13.
Afr J Reprod Health ; 16(1): 125-32, 2012 Mar.
Article in English | MEDLINE | ID: mdl-22783676

ABSTRACT

This cross-sectional study assessed knowledge and utilization of the partograph among midwives in two tertiary health facilities in the Niger Delta Region of Nigeria. A descriptive survey design was utilized, using a structured questionnaire administered to 165 midwives purposively selected from the Federal Medical Center (FMC) (79) and Niger Delta University Teaching Hospital (NDUTH) (86). Results revealed that 84% of midwives knew what the partograph was and 92.7% indicated that the use of the partograph reduces maternal and child mortality. About 50.6% midwives in FMC and 98.8% in NDUTH indicated that it was routinely utilized in their centers. Assessment of utilized partograph charts revealed that only 18 (37.5%) out of 48 in FMC and 17 (32.6%) out of 52 in NDUTH were properly filled. Factors in the utilization of the partograph were:-non-availability of the partograph (30.3%), shortage of staff (19.4%), little or no knowledge in the use of the partograph (22.2%), and 8.6 percent indicated it was time consuming. A significant relationship existed between knowledge of the partograph and its utilization (chi2 = 32.298. Df = 1; P < 0.05) and between midwives years of experience and its utilization (chi2 = 4.818, Df = 4; P < 0.05). However, this study also showed that despite midwives good knowledge of the partograph, there was poor utilization in labor monitoring in both centers. Training of midwives on the use of the partograph with periodic workshops and seminars and a mandatory hospital policy are recommended and vital to the safety of women in labor in the Niger Delta region of Nigeria.


Subject(s)
Decision Support Techniques , Health Knowledge, Attitudes, Practice , Midwifery/methods , Clinical Competence , Female , Humans , Labor, Obstetric/physiology , Nigeria , Obstetric Labor Complications/diagnosis , Pregnancy
14.
Afr J Reprod Health ; 16(3): 94-101, 2012 Sep.
Article in English | MEDLINE | ID: mdl-23437503

ABSTRACT

Symphysiotomy is an operation in which the fibres of the pubic symphysis are partially divided to allow separation of the joint and thus enlargement of the pelvic dimensions thereby facilitating vaginal delivery of the foetus in the presence of mild to moderate cephalopelvic disproportion. It is performed with local anaesthesia, does not require an operating theatre or advanced surgical skills. It can be a lifesaving procedure for both mother and baby in obstructed labour, especially in rural areas and resource-poor settings of developing countries, where a 24 hours availability of a caesarean section cannot be guaranteed. It is a simple underused technology that can be performed by a graduate doctor or midwife in rural health facilities and hospitals where most of the times, in Nigeria, there are no practicing specialist obstetricians. In rural hospital and in communities where sympysiotomy is still being performed, it is evident that it is preferred to caesarean section because of the socio-cultural desire to achieve a vaginal delivery. This paper highlights our experiences with symphysiotomy in a rural Roman Catholic hospital providing evidence on the safety of symphysiotomy and the need for its revival and reinstatement in the obstetric arsenal in Nigeria and similar countries in sub-Saharan Africa where maternal mortality as a result of prolonged and neglected obstructed labour still occur.


Subject(s)
Obstetric Labor Complications/surgery , Symphysiotomy , Cephalopelvic Disproportion/surgery , Cesarean Section/statistics & numerical data , Female , Humans , Maternal Mortality , Nigeria , Pregnancy , Symphysiotomy/adverse effects
15.
Soc Sci Med ; 72(1): 63-71, 2011 Jan.
Article in English | MEDLINE | ID: mdl-21106284

ABSTRACT

Anecdotal evidence suggests that the HIV/AIDS prevalence rates in several African armed forces are high, with gender inequality rendering female military personnel more vulnerable to the disease. The objective of this study was to replicate a successful videotape-based HIV prevention intervention among Nigerian female military personnel in an effort to establish the cross-cultural stability, feasibility and cost-effectiveness of this approach in resource-limited countries. Enlisted women (N346) were recruited from two cantonments in Southwestern Nigeria and randomly assigned to either (a) a 5-session video-based, small group, cognitive-behavioral, HIV prevention intervention, or (b) a 5-session, video-based, contact-matched, HIV education control condition. Participants provided self-report of their HIV/AIDS-related knowledge and sexual behaviors at baseline, 3 and 6 months after completing the intervention. The results indicate that the motivational skills-building intervention did not improve participants' knowledge of HIV/AIDS any better than did the HIV education control condition at each assessment period, but it significantly increased condom use among women in this group by 53.6% at 3-month follow-up. HIV preventive behaviors among women in the motivational skills-building intervention group improved significantly, being 2 and 3 times more, compared to women in the HIV education control group at 3-month and 6-month follow-up assessments. The intervention also significantly improved behavioral intentions of participants as well as reduced alcohol use before sex by 25%, after 3 months; and number of sexual partners by 12% after 6 months. Women in the intervention group were five times more likely than women in HIV education control group to suggest that their new male partners use condom. These findings indicate that a videotape-based, HIV prevention intervention is a feasible and effective approach to HIV prevention among female military personnel from sub-Saharan Africa.


Subject(s)
HIV Infections/prevention & control , Health Education/methods , Health Knowledge, Attitudes, Practice , Military Personnel/education , Risk Reduction Behavior , Videotape Recording , Adolescent , Adult , Condoms/statistics & numerical data , Feasibility Studies , Female , Follow-Up Studies , Humans , Motivation , Nigeria , Program Evaluation , Sexual Behavior , Young Adult
16.
Curr Eye Res ; 35(5): 402-7, 2010 May.
Article in English | MEDLINE | ID: mdl-20450253

ABSTRACT

PURPOSE: To investigate the direct pharmacological actions of L-cysteine, a substrate for the production of H(2)S, on isolated porcine irides in the presence of tone induced by muscarinic receptor stimulation. Furthermore, we examined the underlying mechanism of action of L-cysteine in this smooth muscle. METHODS: Isolated porcine iris muscle strips were set up in organ baths containing oxygenated Krebs buffer solution at 37 degrees C. Longitudinal isometric tension was recorded via a grass FT03 Force-Displacement Transducer and analyzed using the PolyView computer software. The relaxant action of L-cysteine on carbachol-induced tone was studied in the absence and presence of inhibitors of enzymes of the biosynthetic pathways for H(2)S, and prostanoids. In addition, we also examined the effect of ATP-sensitive K(+) (K(ATP)) channel antagonist, glibenclamide on relaxations induced by L-cysteine. RESULTS: L-cysteine (30 nM-1 mM) evoked concentration-dependent relaxations of carbachol-induced tone in isolated porcine irides, reaching a maximum inhibition of 43% at 1 mM. This response was enhanced significantly (P < 0.001) in the presence of the COX inhibitor, flurbiprofen (3 microM). Additionally,in the presence of flurbiprofen, the H(2)S donors, NaHS and Na(2)S, mimicked the relaxations produced by L-cysteine, yielding IC(50) values of 5.8 microM and 180 microM, respectively. Both the inhibitor of cystathionine beta-synthase, AOA (30 microM) and the K(ATP) channel antagonist, glibenclamide (100 microM) caused significant (P < 0.001) rightward shifts in the concentration-response curves to L-cysteine and attenuated the maximum inhibitory response. Conversely, the inhibitor of cystathionine gamma-lyase, PAG (1 mM) blocked only relaxations caused by high concentrations of L-cysteine (> 100 microM). CONCLUSIONS: The inhibitory action of L-cysteine in isolated porcine irides is dependent on the endogenous production of H(2)S by cystathionine gamma-lyase and cystathionine beta-synthase. Furthermore, prostanoids and K(ATP) channels are involved in the inhibitory action of L-cysteine in this tissue.


Subject(s)
Cysteine/pharmacology , Hydrogen Sulfide/metabolism , Iris/drug effects , Muscle Relaxation/physiology , Muscle, Smooth/physiology , Animals , Carbachol/pharmacology , Cholinergic Agonists/pharmacology , Cystathionine beta-Synthase/metabolism , Cystathionine gamma-Lyase/metabolism , Dose-Response Relationship, Drug , Glyburide/pharmacology , Iris/metabolism , Isometric Contraction/physiology , KATP Channels/antagonists & inhibitors , KATP Channels/metabolism , Receptors, Muscarinic/metabolism , Swine
18.
AIDS Behav ; 14(6): 1401-14, 2010 Dec.
Article in English | MEDLINE | ID: mdl-20387111

ABSTRACT

Uniformed services personnel are at an increased risk of HIV infection. We examined the HIV/AIDS knowledge and sexual risk behaviors among female military personnel to determine the correlates of HIV risk behaviors in this population. The study used a cross-sectional design to examine HIV/AIDS knowledge and sexual risk behaviors in a sample of 346 females drawn from two military cantonments in Southwestern Nigeria. Data was collected between 2006 and 2008. Using bivariate analysis and multivariate logistic regression, HIV/AIDS knowledge and sexual behaviors were described in relation to socio-demographic characteristics of the participants. Multivariate logistic regression analysis revealed that level of education and knowing someone infected with HIV/AIDS were significant (P < 0.05) predictors of HIV knowledge in this sample. HIV prevention self-efficacy was significantly (P < 0.05) predicted by annual income and race/ethnicity. Condom use attitudes were also significantly (P < 0.05) associated with number of children, annual income, and number of sexual partners. Data indicates the importance of incorporating these predictor variables into intervention designs.


Subject(s)
HIV Infections/prevention & control , Health Knowledge, Attitudes, Practice , Military Personnel/psychology , Sexual Behavior/psychology , Adolescent , Adult , Condoms/statistics & numerical data , Cross-Sectional Studies , Female , HIV Infections/epidemiology , Humans , Logistic Models , Military Personnel/statistics & numerical data , Nigeria/epidemiology , Risk-Taking , Self Efficacy , Sexual Partners , Socioeconomic Factors , Surveys and Questionnaires , Young Adult
19.
Article in English | MEDLINE | ID: mdl-20071594

ABSTRACT

The sub-Saharan region of Africa is the most severely affected HIV/AIDS region in the world. The population of this region accounts for 67% of all people living with HIV/AIDS and 72% of all AIDS-related deaths. As international collaboration makes access to HIV treatment more widely available in this region the need to increase the population's awareness of its serostatus becomes greater. The incorporation of provider-initiated HIV testing and counseling (routine HIV testing model) as part of a routine medical care would not only increase the population's serostatus awareness but also lead to a better understanding of HIV prevention and treatment and ultimately, increased utilization of available HIV/AIDS prevention programs on a much larger scale. This mini-review summarizes some important regional, sociocultural, economic, legal, and ethical issues that may be deterrent factors to maximal implementation and integration of provider initiated HIV testing and counseling as part of routine medical care in the sub-Saharan African region.


Subject(s)
AIDS Serodiagnosis/economics , Acquired Immunodeficiency Syndrome/diagnosis , Counseling/economics , Delivery of Health Care/economics , AIDS Serodiagnosis/ethics , AIDS Serodiagnosis/legislation & jurisprudence , Acquired Immunodeficiency Syndrome/epidemiology , Acquired Immunodeficiency Syndrome/prevention & control , Acquired Immunodeficiency Syndrome/transmission , Africa South of the Sahara/epidemiology , Counseling/ethics , Counseling/legislation & jurisprudence , Delivery of Health Care/ethics , Delivery of Health Care/legislation & jurisprudence , Developing Countries , HIV , Humans , Socioeconomic Factors
20.
HIV AIDS (Auckl) ; 2: 69-76, 2010.
Article in English | MEDLINE | ID: mdl-22096386

ABSTRACT

Both Human Immunodeficiency Virus (HIV) infection and AIDS remain major public health crises in Nigeria, a country which harbors more people living with HIV/AIDS than any country in the world, with the exception of South Africa and India. In response to the HIV pandemic, global and international health initiatives have targeted several countries, including Nigeria, for the expansion of antiretroviral therapy (ART) programs for the increasing number of affected patients. The success of these expanded ART initiatives depends on the treated individual's continual adherence to antiretroviral (ARV) drugs. Thirteen peer-reviewed studies concerning adherence to ART in Nigeria were reviewed with very few pediatric and adolescent studies being found. Methodologies of adherence measurement were analyzed and reasons for nonadherence were identified in the geopolitical zones in the federal republic of Nigeria. The results of the literature review indicate that adherence to ART is mixed (both high and low adherence) with patient self-recall identified as the common method of assessment. The most common reasons identified for patient nonadherence include the cost of therapy (even when the drugs are heavily subsidized), medication side effects, nonavailability of ARV drugs, and the stigma of taking the drugs. This manuscript highlights the policy and practice implications from these studies and provides recommendations for future ART program management.

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