Analysis of tuberculosis epidemiological characteristics and drug resistance among the floating population in Beijing in 2019 / 中华流行病学杂志

Objective: To analyze the epidemic characteristics and drug resistance of pulmonary tuberculosis among the floating population in Beijing and to provide a scientific basis for formulating strategies for the prevention and control of tuberculosis among the floating population. Methods: Data of tuberculosis patients who were positive for Mycobacterium tuberculosis culture was collected from 16 districts and one municipal institution of tuberculosis control and prevention in Beijing in 2019. The strain samples were tested for drug sensitivity by the proportional method. According to household registration location, patients were divided into the floating population and Beijing registration. SPSS 19.0 software analyzed tuberculosis patients' epidemic characteristics and drug resistance in the floating population. Results: In 2019, there were 1 171 culture-positive tuberculosis patients in Beijing, among the floating population, 593 (50.64%) patients were identified, with a male-to-female sex ratio of 2.2∶1 (409∶184). Compared to patients under household registration as Beijing residents, a higher proportion of young adults aged 20-39 years (65.09%,386/593) were noticed, with 55.65% (330/593) reported from the urban areas and 96.80% (574/593) were reported the first time. The differences were statistically significant (all P<0.05). After completing the drug sensitivity test, 37 cases were with multiple drug-resistant tuberculosis, accounting for 6.24% (37/593). The rates of isoniazid resistance (42.11%,8/19) and multidrug resistance (21.05%,4/19) in floating population patients after retreatment were significantly higher than those in newly treated patients (11.67%, 67/574 and 5.75%, 33/574), and the differences were statistically significant (all P<0.05). Conclusions: Most patients with tuberculosis in the floating population in Beijing in 2019 were young males aged 20-39 years. The reporting areas were urban areas and the newly treated patients mainly. The patients with tuberculosis in the re-treated floating population were more likely to suffer from multidrug and drug resistance, which should be taken as the key population for prevention and control.

Immunohistochemically stained sections against different anti-Mam-A epitopes for in situ breast cancer diagnosis / 军事医学

Objective To investigate the difference between mammary gland tissues and breast cancer tissues.Methods Monoclonal antibodies against Mam-A immunized epitopes were screened for immunohistochemical staining of normal breast tissues and breast cancer tissues.The average optical density was used as an index to identify the quantitative data by computer-aided technology to screen epitope-specific antibodies with significant difference in staining characteristics between two types of tissues.Furthermore the feasibility and effectiveness of breast cancer diagnosis were evaluated.Results Four anti-Mam-A epitope-specific monoclonal antibodies,mAb1152,mAb11617,mAb995 and mAb656,were obtained.Immunohistochemical staining showed that the average density of mAb1152,mAb11617 and mAb995 was significantly different between the two types of tissues.The difference was significant between normal breast tissues and breast cancer tissues under the same conditions.The results showed that mAb11617 was better than mAb1152 and mAb995.At the best working point,mAb11617 was the best,the specificity was 90％ and the sensitivity was 59.62％.Further analysis showed that the sensitivity of mAb11617 combined with mAb995 in the diagnosis of in situ breast cancer was 81.48％ and the specificity was 90％,which was of great diagnostic significance.Conclusion There is significant difference between breast tissues and breast cancer tissues in Mam-A protein immunological activity or expression.This difference,which can be recognized by the specific antibody staining and computer aided technology,is of important diagnostic value.

Clinical features of systemic lupus erythematosus with pulmonary pleural lesion in children / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To investigate the clinical features of systemic lupus erythematosus (SLE) with pulmonary pleural lesion in children.</p><p><b>METHODS</b>One hundred and thirty three child patients with SLE admitted from 2001 to 2010 were enrolled in the study. The clinical data, chest X-ray findings and laboratory examination were retrospectively reviewed. Cases with infectious pulmonary pleural lesion were excluded.</p><p><b>RESULTS</b>According to chest X-ray findings pleural pulmonary lesions were involved in 45 out of 133 cases with SLE (33.83 %); however, only 30 cases (66.67 %) had positive respiratory manifestations. Respiratory features included cough and/or sputum (55.56 %), dyspnea and chest pain (15.56 % and 11.11 %), and only 28.89 % case with pleural pulmonary lesions had rales. Chest X-ray findings included pleural effusion/pleurisy (32 cases, 71.11%), bronchial pneumonia (21 cases, 46.67%) or interstitial pulmonary disease (13 cases, 28.89%). Compared to children without pulmonary pleural lesion, children with pulmonary pleural lesion had higher incidence of leukopenia, lower C₃ or antibody dsDNA (+) (all P<0.05). There was no difference in abnormality of erythrocyte sedimentation rate (ESR), CRP, IgG,IgA,IgM, thrombocytopenia, antibody ANA(+), anti-SSA(+), anti-SSB(+) or anti-Sm(+) between children with or without pulmonary pleural lesion (P>0.05).</p><p><b>CONCLUSION</b>High incidence of pulmonary pleura lesions are present in children with SLE, however, clinical manifestations are lack of specificity or even no respiratory manifestation. Chest X-ray or HRCT scan are necessary in all cases with SLE. Children with leukopenia, lower C₃ or antibody dsDNA (+) are more likely to have pulmonary pleural lesion.</p>

CT features of ovarian Brenner tumor and a report of 9 cases / 中华肿瘤杂志

<p><b>OBJECTIVE</b>In order to improve the preoperative diagnostic accuracy, the computed tomographic (CT) features of ovarian Brenner tumor were described and analyzed.</p><p><b>METHODS</b>CT image and clinical data of nine patients with pathologically confirmed Brenner tumor were collected and analyzed retrospectively. There were 8 benign lesions and 1 borderline lesion.</p><p><b>RESULTS</b>All lesions in the nine cases were unilateral, round, lobulated or irregular in shape and well defined, in a mean diameter of 7.8 cm. Among the nine cases, 5 were benign tumors with uniform structure, 3 were benign tumors accompanied with other pathological components, and 1 was borderline tumor. On the CT images, the 5 uniform benign lesions showed to be solid tumor of low density (lower than that of muscle) or with small cyst inside, two of the 5 lesions had calcification, and other 2 lesions showed slightly heterogeneous enhancement after enhanced scanning. The 3 benign Brenner tumors accompanied with other pathological structures were solid-cystic or cystic, with a clear demarcation of solid and cystic components. The density of solid parts was lower than that of muscle, and slight enhancement, and one of them had calcification. The one borderline tumor was a heterogeneous solid one and its density was higher than that of muscle, with a large proportion of low density and large calcification, and moderately enhanced after enhancing. None of the 9 cases had metastasis or effusion.</p><p><b>CONCLUSION</b>Ovarian Brenner tumors are usually unilateral and often accompanied with other type of tumor components. When a tumor is of uniform component, the CT imaging often shows a homogeneous solid tumor with homogeneous or heterogeneous density. When a tumor is accompanied with other tumor components, it may be solid-cystic or cystic and has partial calcification. After enhancing, a benign Brenner tumor is slightly enhanced, while the borderline one is moderately/highly enhanced.</p>

Treatment of enophthalmos after severe malar-maxillary complex fracture with titanium mesh and high density polyethylene (Medpor) / 中华整形外科杂志

<p><b>OBJECTIVE</b>To study the surgical management of enophthalmos after severe malar maxillary complex fracture.</p><p><b>METHODS</b>The X-ray and CT examination were performed before operation to diagnose the orbital fracture and intraorbital tissue displacement. The fractured orbital rim was repositioned intraoperatively, followed by implantation of shaped titanium mesh to rebuild the orbital floor. The Medpor was inserted above the titanium mesh to correct the enophthalmos.</p><p><b>RESULTS</b>From Sept. 2007 to Jan. 2009, 6 cases of enophthalmos after severe malar-maxillary complex fracture were treated. The enophthalmos was corrected or improved obviously in all the patients.</p><p><b>CONCLUSIONS</b>The enophthalmos after severe malar-maxillary complex fracture can be corrected or obviously improved. Shaped titanium mesh can be used to rebuild the orbital floor with the Medpor to reconstruct the intraorbital tissue volume.</p>

Computed tomography features of enlarged tonsils as a first symptom of non-Hodgkin's lymphoma / 癌症

<p><b>BACKGROUND AND OBJECTIVE</b>The tonsils are the most commonly involved primary part of non Hodgkin's lymphoma (NHL) of the head and neck, which usually happens in the Waldeyer's ring. Our study describes the features of computed tomography on enlarged tonsils as a first symptom of NHL and the characteristics of the involved cervical lymph nodes.</p><p><b>METHODS</b>A retrospective review was performed on 130 patients with primary extranodal lymphomas of the head and neck over 16 years. Of them 22 untreated patients showed tonsil lesions as a first symptom.</p><p><b>RESULTS</b>Bilateral enlarged tonsils were involved in 13 patients, and unilateral lesions were in 9 patients. The lesions in 20 patients appeared mass like, while 2 patients had diffuse thickening. There were 8 patients with simultaneous invasion of the nasopharynx, soft palate, and epiglottis. Of the 19 patients that underwent enhanced CT scans, 15 patients demonstrated slight homogeneous enhancement, 4 with crannied or a patch of low density, and 1 with ring like enhancement. All 22 patients appeared to have cervical lymph nodes involvement. The upper groups of cervical lymph nodes were involved bilaterally in 13 patients, unilaterally in 9 patients. The middle groups were involved bilaterally in 7 patients, unilaterally in 10 patients. The lower groups were involved bilaterally in 2 patients, and unilaterally in 5 patients. After contrast administration, lymph nodes showed homogeneous density and slight enhancement in 11 patients, heterogeneous enhancement with necrosis and cystic changes in 6 patients, and ring like enhancement in 2 patients.</p><p><b>CONCLUSIONS</b>Bilateral involvement, homogeneous density, and slight enhancement are characteristics of tonsil involvement of non Hodgkin's lymphoma. Bilateral upper groups of cervical lymph nodes are the most frequently involved lymph nodes, which are often shown with homogeneous density and slight enhancement.</p>

Clinical research of angle-splitting ostectomy based on three dimensional computed tomography true-up technique / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To illustrate the morphological changes of mandible after angle-splitting ostectomy.</p><p><b>METHODS</b>From January 2006 to April 2008, 10 cases had undergone mandibular angle-splitting ostectomy to reduce the width of the lower face. For each patient, CT datum of mandible at three stages (preoperative, immediate postoperative, 6 months postoperative) were collected. By the application software of reverse engineering (Surfacer V9) and true-up and dissection techniques based on three-dimensional spiral computed tomography (3D-CT), operative efficacy and bone regeneration at the operation area of angle-splitting ostectomy were evaluated 6 months postoperative.</p><p><b>RESULTS</b>1) Concavity could be seen at the angle-splitting ostectomy area 6 months postoperative, especially at the mandibular external oblique line region. Average cup depth was (3.64 +/- 1.67) mm by contrasted to preoperative. Diminution of bone volume was 55% +/- 9% for the local operative area 6 months postoperative. 2) Bone regeneration could be seen at the area that mandibular outer cortex had been removed. Compared with immediate postoperative, ratio of neoformative bone was 84.6% +/- 7.3% 6 months postoperative. The main region of bone regeneration was mandibular angle.</p><p><b>CONCLUSION</b>Mandibular angle-splitting ostectomy is an effective technique for reducing the width of the lower face. Masseter muscular movement should be restricted postoperative to prevent hyperostosis at the angle area.</p>

Experimental study of biomechanics after mandibular outer cortex osteotomy / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the local changes of biomechanics after osteotomy of mandibular outer cortex in body and angle areas.</p><p><b>METHODS</b>Six minitype pigs at the age of 8 to 12 months were selected. The mandibular outer cortex that involves angle and part of body was removed in one side. The animals were killed 24 weeks after operation. Bone strut was taken from mandibular angle region bilaterally and sent for biomechanical test</p><p><b>RESULTS</b>There was no biomechanical difference between the two angle areas of experimental and normal sides 24 weeks after mandibular outer cortex osteotomy (maximum load P > 0.05, rigidity P > 0.05).</p><p><b>CONCLUSIONS</b>Mandibular outer cortex osteotomy had no influence on local biomechanics.</p>

Comparative study of onlay bone graft absorption of outer cortex from mandible and cranium / 中华整形外科杂志

<p><b>OBJECTIVE</b>To investigate the value of application of mandibular outer cortex as bone graft by comparing its bone absorption with cranial outer cortex.</p><p><b>METHODS</b>8 minitype grown-up pigs at the age of 8 - 12 months underwent surgery of taking out the same size (2.5 cm x 1.0 cm) of outer cortex from mandible and craninium. The volume of the outer cortex was measured by volume-displacement method. Then the outer cortex of mandible and cranium were onlay grafted to the each side of the pig snout, respectively. 12 weeks later, 2 pigs were randomly selected for histological examination. The other 6 pigs were killed 24 weeks after surgery for measurement of the bone graft volume and histologic examination.</p><p><b>RESULTS</b>The bone graft absorption rate was (41 +/- 5)% for mandibular outer cortex and (46 +/- 12)% for cranial outer cortex, showing no significant difference between them (P = 0.51). The histologic examination results also had no marked difference in the bony healing and reforming between the two graft.</p><p><b>CONCLUSIONS</b>Mandibular outer cortex is a good donor site for onlay bone graft in craniofacial region.</p>

Experimental study about osteotomy of mandibular outer cortex / 中华整形外科杂志

<p><b>OBJECTIVE</b>To investigate the change of morphology, biomechanics and histology after osteotomy of mandibular outer cortex.</p><p><b>METHODS</b>The mandibular outer cortex that involves angle and part of body was removed at one side in 8 minitype pigs aged 8-12 months. 2 pigs were selected randomly for histologic examination 12 weeks after operation. The other 6 animals were killed 24 weeks after operation. The thickness of new-formed mandibular outer cortex was measured and compared with that of operated side. Biomechanical test was performed in bilateral angles. Histological observation was made in the operated side.</p><p><b>RESULTS</b>The thickness of outer cortex was (2.1 +/- 0.3) mm and (2.5 +/- 0.4) mm in the operated side and opposite side, respectively, showing a significant difference between them (P < 0.01). The maximum load was (401.76 +/- 204.91) N and (585.42 +/- 413.07) N in the operated side and opposite side, respectively (P > 0.05). The Rigidity was (2172.19 +/- 1174.73) N/mm and (2363.90 +/- 1547.48) N/mm (P > 0.05). There was no statistical difference in biomechanics between the two sides. The histologic study showed histologically complete regeneration of outer cortex 24 weeks after mandibular outer cortex osteotomy.</p><p><b>CONCLUSIONS</b>After resection of mandibular outer cortex, the histologic restoration is complete, but the new-formed outer cortex is thinner with local depression. Bone tubercle can be seen at the angle after bone regeneration. There is no obvious change in biomechanics after outer cortex osteotomy.</p>

Clinical research of craniofacial bone autograft using mandibular outer cortex / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To illustrate the volume changes of mandibular outer cortex after been grafted to different recipient sites of facies cranii.</p><p><b>METHODS</b>Six cases underwent onlay bone graft to the angle and body part of mandible and malar surface simultaneously by using mandibular outer cortex. Three dimensional computed tomography (3D-CT) datum of immediate postoperative and 6 months postoperative of each case were collected systematically. By true-up and dissection techniques based on 3D-CT, volume changes of bone graft at different recipient sites were observed and analyzed 6 months postoperative.</p><p><b>RESULTS</b>6 months after onlay bone grafted, bone resorption occurred. To different recipient sites, bone resorption rate was unequal. At the mandible area, bone resorption rate was 20.8% +/- 7.2%, the main site of resorption was at the lower and posterior border of mandible. At the anterior part of maxilla, bone resorption rate was 11.2% +/- 2.3%. Statistics showed significant difference of resorption rate between the two sites (P<0.05).</p><p><b>CONCLUSION</b>Bone resorption of mandibular outer cortex after onlay graft treatment is variant according to different craniofacial recipient sites. The difference of mechanical environment at variant recipient sites is considered to be an influencing factor. Quantization of bone resorption rate can guide a better clinical use.</p>

Effects of omapatrilat on endothelin-1-induced proliferation and synthesis of cardiac fibroblasts / 中国应用生理学杂志

<p><b>AIM</b>To investigate the effects of omapatrilat (OMA) on endothelin-1-induced proliferation of cardiac fibroblasts (CFs).</p><p><b>METHODS</b>Isolated and cultured CFs from neonatal Sprague-Dawley rats (SD) were randomly divided into 7 groups: (1) Control, (2) ET-1, (3) OMA, (4) ET-1 + OMA 10(-9) mol/L, (5) ET-1 + OMA 10(-8) mol/L, (6) ET-1 + OMA 10(-7) mol/L and (7) ET-1 + OMA 10(-6) mol/L. CFs were counted by MTT assay. Cell cycle distribution was determined with a flow cytometer (FCM). [3H]-Proline incorporation was evaluated by scintillation counting. Nitric oxide (NO) was measured by colorimetry.</p><p><b>RESULTS</b>10(-7) mol/L ET-1 significantly increased A490 value and [3H]-Pro incorporation and decreased NO secretion compared with the control group (P < 0.01). 10(-9)-10(-6) mol/L OMA inhibited the effects of ET-1 on CFs in a concentration-dependent manner (P < 0.01 vs. ET-1). In the ET-1 group, the percentage of cells in the S phase was higher than control, which was inhibited by l0(-6) mol/L OMA (P < 0.01 vs. ET-1 and control).</p><p><b>CONCLUSION</b>OMA can restrain the proliferation and collagen synthesis of cardiac fibroblasts induced by endothelin-1, and this effect may be partially mediated by NO.</p>

Over-expressed genes detected by suppression subtractive hybridization in carcinoma derived from transformed 16HBE cells induced by BPDE / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To screen the over differentially expressed genes in carcinoma induced by BPDE-transformed 16HBE cells (16HBE-C cells).</p><p><b>METHODS</b>The suppression subtractive hybridization (SSH) method was performed to profile differentially expressed genes between 16HBE-C cells and 16HBE cells. The cDNA fragments of differentially expressed genes were inserted into TA cloning vector and transformed competent E. coli strain. Positive clones were randomly picked up and identified by the colony PCR method. Dot blot was used to test the same source with the tester. The differentially expressed cDNA fragments were sequenced and compared with known genes and EST database in Genbank.</p><p><b>RESULTS</b>Eight known genes were over-expressed in 16HBE-C cells including eukaryotic translation elongation factor 1 alpha 1, HIF-1 responsive RTP801, ribosomal protein L10 (RPL10), ribosomal protein S29 (RPS29), mitochondrion related genes, and laminin receptor 1. Three differentially expressed cDNA fragments could not be matched to the known genes but to the EST database.</p><p><b>CONCLUSION</b>The SSH method can detect differentially expressed genes between 16HBE-C and 16HBE cells. BPDE-induced carcinogenesis may be related to alteration of at least eight known genes and three unknown genes. These expression data provide a clue to further cloning novel genes and studying functions in BPDE-induced carcinoma.</p>