Efficacy and safety of cholecalciferol-augmented anti-tuberculosis therapy for treatment of naïve patients with pulmonary tuberculosis: A randomized, controlled, clinical study.

BACKGROUND/OBJECTIVE: Vitamin D deficiency may contribute to the therapeutic failure of antituberculosis therapy (ATT). The aim of this study is to explore the role of adding cholecalciferol to the standard ATT in improving the therapeutic outcome among the naïve patients with pulmonary tuberculosis (TB). METHODS: A randomized, controlled, clinical study, which included 496 naïve patients with pulmonary TB, was carried out. The patients were randomly allocated to two groups. Group-A included 247 patients who received ATT, while group-B included 249 patients who received ATT with cholecalciferol. RESULTS: The rate of therapeutic failure among the study population was 29.4%; it was significantly lower among patients of group-B compared to those of group-A (22.1% (95% CI 14.7-26.2) vs 38.1% (95% CI 31.5-46.1), p 0.036). In addition, the rate of early therapeutic response was significantly higher among patients of group-B compared to those of group-A (35.3% (95% CI 29.6-42.3) vs 19.4% (95% CI 15.1-24.6), p 0.041). Incidence rate of adverse effects was 19.3%; it was higher (although not statistically significant) among patients of group-A compared to those of group-B (21.9% vs 16.9%). CONCLUSIONS: In conclusion, cholecalciferol-augmented ATT can be more efficacious in treating naïve patients with pulmonary TB compared to the standard ATT. In addition, adding vitamin D3 to ATT provides extra protection against the hepatic and muscular adverse effects of ATT.

Predictors of therapeutic failure among patients with acute brucellosis treated by dual therapy with doxycycline-rifampin.

OBJECTIVE: To determine the frequency of therapeutic failure among patients with acute and subacute brucellosis and to explore the predictors of failure. METHODS: The study included 213 consecutive, naïve patients with acute and subacute brucellosis. All participants underwent clinical evaluation, chest radiography, stool microscopic examination and interferon-gamma release assay. Patients received the WHO-recommended therapy of doxycycline 200 mg/day and rifampin 900 mg/day, for 6 weeks. RESULTS: Mean age of the study population was 39.8 ± 12.2 years; 64.8% of them were males. The therapeutic failure rate was 16.4%. Adverse effects were reported by 13.1%. Multivariate analysis of factors associated with therapeutic failure revealed latent tuberculosis infection (LTBI) (OR 3.1, 95% CI, 1.9-24.6, P: 0.009), ascariasis (OR 2.6, 95% CI 1.5-17.9, P: 0.012), and the use of acid suppressive therapy (OR 2.1, 95% CI 1.2-19.5, P: 0.037) as the predictors of therapeutic failure. CONCLUSIONS: The prevalence of therapeutic failure among the Egyptian patients with acute/subacute brucellosis is increasing. Predictors of therapeutic failure are LTBI, ascariasis, and the use of acid suppressive therapy.

Cholecalciferol for prophylaxis against antituberculosis therapy-induced liver disorders among naïve patients with pulmonary tuberculosis: A randomized, comparative study.

BACKGROUND: Patients in countries endemic for chronic viral hepatitis are more vulnerable to antituberculosis therapy-induced liver disorders (ATT-LDs). The aim of this study was to explore the role of cholecalciferol in prophylaxis against ATT-LD among patients with pulmonary tuberculosis (TB) receiving ATT. MATERIAL AND METHODS: We conducted a hospital-based, prospective, randomized, comparative study which included 300 consecutive, naïve patients with pulmonary TB eligible for ATT. The patients were randomly allocated to Group A (150 patients who received ATT) and Group B (150 patients who received ATT with cholecalciferol) who had clinical evaluation, laboratory investigations, and imaging studies. Statistical analysis used student's t-test and Chi-square test were used as appropriate to compare the variables between the study groups. RESULTS: The study population mean age was 35.6 ± 15.3 years. The overall incidence rate of ATT-LD among the study population was 9.3%; the incidence rate was significantly higher among Group A patients compared to those of Group B (13.3 vs. 5.3%;P = 0.001). The onset of ATT-LD was significantly earlier among patients of Group A compared to those of Group B (31.4 vs. 58.7 days,P = 0.027), while the duration of ATT-LD was significantly longer among patients of Group A compared to those of Group B (34.8 vs. 16.9 days,P = 0.009). No adverse effects related to cholecalciferol use were observed. CONCLUSIONS: Adjuvant cholecalciferol supplementation may be protective against ATT-LD without extra adverse effects. Before recommending the routine use of cholecalciferol supplementation for prevention of ATT-LD, larger scale studies are recommended.

Hookworm infection among patients with pulmonary tuberculosis: Impact of co-infection on the therapeutic failure of pulmonary tuberculosis.

OBJECTIVE/BACKGROUND: The aim of this study is to determine the rate of hookworm infection among patients with pulmonary tuberculosis (TB) and to find out if there is a relation between hookworm infection and the therapeutic failure of pulmonary TB. METHODS: We carried out a prospective, hospital-based study. The study included 231 naïve patients with pulmonary TB, consecutively. Patients were evaluated at the 4th month of therapy for persistence of Mycobacterium tuberculosis infection. All patients had clinical evaluation, laboratory investigations (including sputum culture and stool microscopic examination), and imaging studies (abdominal ultrasonography and chest radiography). RESULTS: The study population mean age was 42.7±13.9 years old with 26.8% of them 40 years old or more. Out of 231 patients, 133 (57.6%) were men. Therapeutic failure rate of pulmonary TB was 29.4%. Hookworm infection was diagnosed among 16.5% of patients and 27.7% had diabetes mellitus (DM). Using multivariate analysis, it was found that age of 40 years or more (odds ratio [OR] 8.4; 95% confidence interval [CI] 1.7-41.3; p=.009), hookworm infection (OR 7.6; 95% CI 1.2-49.9; p=.034), and DM (OR 5.9; 1.2-28; p=.027) were independently associated with therapeutic failure of pulmonary TB among the study population with pulmonary TB. CONCLUSION: In conclusion, the rate of therapeutic failure of pulmonary TB is high. Besides older age and DM, hookworm infection can reduce the therapeutic response of pulmonary TB. Screening for and control of DM and hookworm infection among patients with pulmonary TB may improve their therapeutic response.