1.The clinical and high-resolution CT characteristics of invasive pulmonary fungal infections in children
Wenxian HUANG ; Weibin ZENG ; Yuejie ZHENG ; Ranran CHEN ; Hongwu ZENG
Chinese Pediatric Emergency Medicine 2016;23(5):321-324
Objective To investigate and summarize the clinical and high-resolution computed tomography(HRCT) characteristics of invasive pulmonary fungal infections(IPFIs)in children.Methods Clinical and HRCT data of 35 cases with IPFIs admitted in our hospital between March 2007 and July 2015 were retrospectively analyzed.The clinical and HRCT characteristics were summarized.Results Thirty-five patients consisted of 23 boys and 12 girls with mean age of(3.2±1.9) years.Host factors included acute leukemia (n=12),primary immunodeficiency disease (n=4),congenital heart disease (n=2),cerebral palsy (n=2),severe influenza A infection (H1N1) (n=2),ichthyosis (n=1),acquired immunodeficiency syndrome(n=1),systemic lupus erythematous (n=1),tubercular meningitis(n=1),mechanical ventilation(n=2).All patients were treated with broad-spectrum antibiotic,ranking by descending order:third-generation cephalosporins (28 cases),carbapenems(19 cases)and vancomycin (18 cases).Seventeen cases were treated with corticosteroids systemically and 12 cases with acute leukemia took antineoplastic medicine.The symptoms of IPFIs were intermittent or persistent fever,cough and rales.HRCT results:nodules (n=25,71.4%),subpleural patchy opacities (n=24,68.6%),mass (>3cm) (n=4,11.4%),halo sign (n=27,77.1%),cavities (n=8,22.9%),air crescent sign (n=4,11.4%),miliary nodules (n=2,5.7%),pleural effusion (n=14,40%).Conclusion There are certain specific characteristics of IPFIs in children in clinical and HRCT aspects.The possible diagnosis of IPFIs can be made based on clinical and HRCT features.
2.Limited endoscopic sphincterotomy plus balloon dilation (ESBD)for large choledocholithiasis ac-companied with periampullary diverticula
Ranran ZENG ; Gang SUN ; Xiuli ZHANG ; Fengchun CAI ; Wen LI ; Qiyang HUANG ; Enqiang LINGHU ; Yunsheng YANG
Chinese Journal of Digestive Endoscopy 2015;(5):281-285
Objective To explore the effectiveness and safety of limited endoscopic sphincterotomy plus endoscopic papillary balloon dilation (ESBD)for patients with large common duct stones and periampul-lary diverticula (PAD).Methods Data of 40 patients with large common duct stones (diameter ≥10 mm) and PAD who underwent ESBD were retrospectively reviewed.The clinical feature,operation method,suc-cess rates of stone removal and early complications rates during hospitalization were evaluated according to PAD subtypes.Results The stone removal rate in first session was 90.0%(36 /40,with a median time of 29 minutes per procedure.Three patients underwent a second procedure to remove residual stones.The over-all stone removal rate was 97.5% (39 /40).The early complications rate was 15%(6 /40),including mild pancreatitis in two cases(5%),hyperamylasemia in two (5%),postoperative late bleeding in two (5%), which were cured with conservative treatment.No perforation,massive hemorrhage or death occurred.No significant differences in success stone removal rate and early complication rate were found between PAD sub-types.Conclusion ESBD is an effective and safe procedure for removing choledocholithiasis in patients with PAD,regardless of PAD subtypes.
3.Comparative Genome Analysis of Scutellaria baicalensis and Scutellaria barbata Reveals the Evolution of Active Flavonoid Biosynthesis.
Zhichao XU ; Ranran GAO ; Xiangdong PU ; Rong XU ; Jiyong WANG ; Sihao ZHENG ; Yan ZENG ; Jun CHEN ; Chunnian HE ; Jingyuan SONG
Genomics, Proteomics & Bioinformatics 2020;18(3):230-240
Scutellaria baicalensis (S. baicalensis) and Scutellaria barbata (S. barbata) are common medicinal plants of the Lamiaceae family. Both produce specific flavonoid compounds, including baicalein, scutellarein, norwogonin, and wogonin, as well as their glycosides, which exhibit antioxidant and antitumor activities. Here, we report chromosome-level genome assemblies of S. baicalensis and S. barbata with quantitative chromosomal variation (2n = 18 and 2n = 26, respectively). The divergence of S. baicalensis and S. barbata occurred far earlier than previously reported, and a whole-genome duplication (WGD) event was identified. The insertion of long terminal repeat elements after speciation might be responsible for the observed chromosomal expansion and rearrangement. Comparative genome analysis of the congeneric species revealed the species-specific evolution of chrysin and apigenin biosynthetic genes, such as the S. baicalensis-specific tandem duplication of genes encoding phenylalanine ammonia lyase and chalcone synthase, and the S. barbata-specific duplication of genes encoding 4-CoA ligase. In addition, the paralogous duplication, colinearity, and expression diversity of CYP82D subfamily members revealed the functional divergence of genes encoding flavone hydroxylase between S. baicalensis and S. barbata. Analyzing these Scutellaria genomes reveals the common and species-specific evolution of flavone biosynthetic genes. Thus, these findings would facilitate the development of molecular breeding and studies of biosynthesis and regulation of bioactive compounds.
Evolution, Molecular
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Flavonoids/biosynthesis*
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Genome, Plant
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Plant Extracts/genetics*
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Scutellaria/metabolism*
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Whole Genome Sequencing