ABSTRACT
SETTING: Delays in the diagnosis of pulmonary tuberculosis (PTB) increase the risk of transmission and severity of the disease. Little information is available on PTB patients with diabetes mellitus (DM). OBJECTIVES: To examine the impact of DM on delays in diagnosing PTB and the effect of diagnostic delay on the clinical presentation of PTB among patients in Beijing, China. DESIGN: In a cross-sectional study conducted in two PTB dispensaries of Beijing, all confirmed PTB patients were screened for DM. Data relating to diagnostic delay and clinical presentation of PTB were collected and analysed. RESULTS: Of 1126 PTB patients selected, 182 (16.2%) were identified as having DM. The median delay for PTB patients with DM (25 days) was significantly higher than that of PTB patients without DM (6 days). In a subgroup analysis, diagnostic delay was associated with smear positivity among PTB patients with DM (OR 3.10, 95%CI 1.66-5.76) and associated with smear positivity (OR 4.38, 95%CI 3.19-6.04), pulmonary cavities (OR 2.62, 95%CI 1.85-3.71) and more symptoms (OR 1.81, 95%CI 1.20-2.73) among PTB patients without DM. CONCLUSIONS: DM was associated with longer diagnostic delays, which in turn was associated with more serious clinical presentations of PTB. It is thus necessary to examine risk factors associated with diagnostic delay among PTB patients with and without DM.
Subject(s)
Bacteriological Techniques , Delayed Diagnosis , Diabetes Mellitus/epidemiology , Tuberculosis, Pulmonary/diagnosis , Adult , Chi-Square Distribution , China/epidemiology , Cross-Sectional Studies , Diabetes Mellitus/diagnosis , Female , Humans , Logistic Models , Male , Middle Aged , Multivariate Analysis , Odds Ratio , Predictive Value of Tests , Prognosis , Risk Factors , Time Factors , Tuberculosis, Pulmonary/drug therapy , Tuberculosis, Pulmonary/epidemiology , Tuberculosis, Pulmonary/microbiology , Tuberculosis, Pulmonary/transmissionABSTRACT
This paper deals with a new cell line established from 5 carcinoma specimens of hysterectomy and designated as HCE1. This cell line has been passaged more than 80 times(more than 18 months). It has the characteristics: 1. The pathological features of the tumor transplanted in nude mice were similar to that of the original inoculated lesion; 2. Electromicroscopically, there were rich microvilli on the surface of the cells. Abundant ribosomes were also observed; 3. The growth curves of the 25th passage were determined, the population doubline time calculated in the log phase of growth was 45.8 h; 4. The cloning efficiency in soft agar averaged 14.8% after counting 6 plates; 5. Karyo-type analysis showed aneuploidy with the modal chromosomal number 64-97.
