Humans ; Occupational Diseases ; diagnosis

Adult ; Aged ; China ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Pneumoconiosis ; diagnosis ; epidemiology

OBJECTIVE: To evaluate the relationship between katG gene mutation and isoniazid (INH) resistance and to develop a rapid screening method of point mutation in the katG gene associated with MTB resistance. METHODS: Twenty-four clinical isolates of MTB with 8 INH resigtance isolates and 16 INH-sensitive isolates were analyzed by PCR-RFLP, with the H(37)Rv reference strain as the control. RESULTS: G-->C point mutations were detected in 7 of 8 isoniazid-resistant strains and no gene mutation was shown in 16 isoniazid-sensitive isolates. The sensitivity and specificity were 87.5 % and 100 % respectively. No katG gene sequence deletion was observed in any specimen. CONCLUSION: Our results suggest katG gene mutation is one of the most important mechanisms of INH-resistant TB. PCR-RFLP may be useful in detection of katG gene mutation.

?AIM:To evaluate the clinical outcomes of Nd:YAG laser capsulotomy in the treatment of early stage capsular block syndrome ( CBS) .?METHODS:Eighteen patients (21 eyes) with early stage capsular block syndrome were treated using Nd:YAG laser by anterior capsulotomy only or combined with posterior capsulotomy from January 2010 to July 2015 in Anyang Eye Hospital. Uncorrected distance visual acuity, intraocular pressure, spherical equivalent, depth of anterior chamber were observed preoperatively and 2wk postoperatively.?RESULTS:Seventeen eyes simply underwent peripheral anterior capsulotomy with Nd:YAG laser. Four eyes were combined with posterior capsulotomy. Compared with preoperative, uncorrected distance visual acuity improved, intraocular pressure returned to normal, degree of myopia reduced, depth of anterior chamber had deepened.? CONCLUSION: Nd: YAG laser capsulotomy is an effective treatment for early stage capsular block syndrome.

ObjectiveTo analyze the clinical characteristics and treatment of severe acute respiratory syndrome (SARS).MethodsDuring epidemic period of SARS,all suspected patients were isolated and treated at very early stage. Clinical symptoms, signs and changes of the chest film were observed carefully to make early diagnosis and begin early intervention. 14 SARS cases with definite diagnosis were treated by Western Medicine combined with Chinese Traditional Medicine.3 cases of them with severe type were treated by timely technical ventilation,which was nasotracheal intubition guided with fibronchoscope,with the principle of low tide volume and high PEEP to improve oxygen combination.ResultsAll patients were cured to discharge. Only two cases of mild pulmonary fibrosis were found after 2 months' follow-up. None of the medical workers taking part in rescuing and treating SARS patients and none of the family members of the patients were infected.ConclusionDuring SARS epidemic period,early isolation,early diagnosis,early combined treatment of Western Medicine and Chinese Traditional Medicine,and prompt technical ventilation intervention on severe cases are important factors to successfully rescue and treat SARS patients.

Humans ; Liver Cirrhosis ; diagnosis ; mortality ; physiopathology ; Logistic Models ; Prognosis

OBJECTIVETo evaluate the performance of computer-assisted imaging system in the detection of cervical squamous intraepithelial lesion and quality-assurance.

METHODSManual PAP screening (n = 140 580) and image-assisted screening (n = 32 885) were compared for the detection rates of squamous cell abnormalities, the atypical squamous cells (ASC) to squamous intraepithelial lesion (SIL) ratio, the positive rates of high risk human papillomavirus (HR-HPV) test in the case of atypical squamous cells of undetermined significance (ASC-US), and the correlation between cytopathology and histopathology.

RESULTSCompared with manual screening, computer-assisted imaging system showed increased overall positive detection by 0.32%, decreased detection of ASC by 0.21%, increased detection of low-grade squamous intraepithelial lesion (LSIL) by 0.22%, increased detection of high-grade squamous intraepithelial lesion or worse (HSIL) by 0.31%, and decreased ASC to SIL ratio from 2.59 to 1.60. Computer-assisted imaging system did not change the HR-HPV positive rate of the patients who were ASC-US, or the coincidence rate between cytopathology and histopathology. Moreover, the productivity of the laboratory operation increased 58.33%.

CONCLUSIONComputer-assisted imaging system significantly increases the overall positive detection rate of cervical SIL, improves accuracy and work efficiency of screening, decreases the ASC/SIL rate, and strengths the quality-assurance of laboratory testing.

Carcinoma, Squamous Cell ; pathology ; Cervical Intraepithelial Neoplasia ; pathology ; Female ; Humans ; Image Interpretation, Computer-Assisted ; Papillomaviridae ; isolation & purification ; Papillomavirus Infections ; pathology ; Uterine Cervical Dysplasia ; pathology ; Uterine Cervical Neoplasms ; pathology ; Vaginal Smears ; methods

Adolescent ; Adult ; Dust ; analysis ; Female ; Health Status ; Humans ; Industry ; Male ; Middle Aged ; Occupational Exposure ; analysis ; Quartz ; Young Adult

OBJECTIVETo investigate the incidence of JAK2V617F gene point mutation in patients with myeloproliferatives diseases (MPD) and its clinical significance.

METHODSGenomic DNA from bone marrow and peripheral blood cells were extracted from 68 patients with MPD. Allele specific polymerase chain reaction was used to amplify the exon 12 of JAK2 gene which harbours V617F mutation. The PCR products were identified by DNA sequencing. JAK2V617F gene point mutation and its impact on peripheral blood cells were analyzed.

RESULTSThe incidence of JAK2V617F mutation in 68 patients with MPD was 65.28 %. The positive rate of JAK2V617F point mutation was 77.77 % in patients with PV (36/59), 56.52 % in patients with ET (23/59) and 44.44 % in patients with IMF (4/9). In all groups, the incidence of JAK2V617F point mutation in bone marrow and peripheral blood were equal. Patients with JAK2V617F mutation in PV group had higher counts of white blood cell and hemoglobin in peripheral blood than patients without JAK2V617F point mutation (P <0.05). Patients with JAK2V617F mutation in ET group had higher counts of white blood cell than those without JAK2V617F mutation (P <0.05); there was no significant difference in platelet count.

CONCLUSIONJAK2V617F point mutation can affect the hematologic features, which may be of diagnostic value for MDP with negative BCR-ABL gene.

Adolescent ; Adult ; Aged ; Amino Acid Substitution ; Base Sequence ; Female ; Humans ; Janus Kinase 2 ; genetics ; Male ; Middle Aged ; Molecular Sequence Data ; Myeloproliferative Disorders ; enzymology ; genetics ; Point Mutation ; Young Adult

Adult ; Convergence, Ocular ; physiology ; Eyeglasses ; Female ; Humans ; Male ; Myopia ; physiopathology ; Vision, Binocular ; physiology