Diagnosis and treatment of intraocular tuberculosis

Tuberculosis(TB)is a chronic infectious disease with high rate of morbidity and mortality world wide, and it is easy to relapse. TB can involve multiple organs, when it infects eye, it can cause lesions in anterior segment, posterior segment and the accessory organs of the eye. The purpose of this paper is to describe the clinical manifestation of intraocular TB, its diagnosis and treatment

Superconductivity and local-moment magnetism in Eu(Fe0.89_{0.89}Co0.11_{0.11})2_{2}As2_{2}

We report the measurements of resistivity and magnetization under magnetic fields parallel and perpendicular to the basal plane, respectively, on a cobalt-doped Eu(Fe$_{0.89}$Co$_{0.11}$)$_{2}$As$_{2}$ single crystal. We observed a resistivity drop at $T_c\sim$ 21 K, which shifts toward lower temperatures under external fields, suggesting a superconducting transition. The upper critical fields near $T_c$ show large anisotropy, in contrast with those of other '122' FeAs-based superconductors. Low-field magnetic susceptibility data also show evidence of superconductivity below 21 K. Instead of expected zero-resistance below $T_c$, however, a resistivity reentrance appears at 17 K under zero field, coincident with the magnetic ordering of Eu$^{2+}$ moments. Based on the temperature and field dependences of anisotropic magnetization, a helical magnetic structure for the Eu$^{2+}$ spins is proposed. External magnetic fields easily changes the helimagnetism into a ferromagnetism with fully polarized Eu$^{2+}$ spins, accompanying by disappearance of the resistivity reentrance. Therefore, superconductivity coexists with ferromagnetic state of Eu$^{2+}$ spins under relatively low magnetic field. The magnetic and superconducting phase diagrams are finally summarized for both $H\parallel ab$ and $H\parallel c$.Comment: 8 pages, 10 figure

A Case of Prune Belly Syndrome

Prune belly syndrome (PBS) is a rare congenital disorder characterized by deficient abdominal wall muscles, urinary tract malformation, and, in males, cryptorchidism. We present a case of PBS in China. The patient was a newborn baby boy who had wrinkled, “prune-like” abdominal skin, bilateral cryptorchidism, and urinary system malformation, complicated with hypoplasia of the lung and branch of the coronary artery–right ventricular fistula. His kidney function was inadequate. The patient subsequently died at age 28 days due to septicemia from a severe urinary tract infection

catena-Poly[[dinitratocopper(II)]-μ-4,4′′-bis­(1H-benzimidazol-1-yl)-1,1′:4′,1′′-terphen­yl]

In the title one-dimensional coordination polymer, [Cu(NO3)2(C32H22N4)]n, the Cu2+ ion (site symmetry 2) is coordinated by two nitrate O atoms and two N atoms from two 4,4′-bis­(benzoimidazol-1-yl)terphenyl (L) ligands in a distorted cis-CuN2O2 square-planar coordination geometry. An alternative description of the metal coordination geometry, if long Cu—O contacts to the bonded nitrate anions are considered, is an extremely distorted cis-CuN2O4 octa­hedron. The complete L ligand is generated by crystallographic twofold symmetry and connects the metal ions into infinite chains propagating in [10]. The dihedral angle between the benzimidazole ring system and the adjacent benzene (B) ring is 51.12 (11)° and the dihedral angle between the B ring and the central ring is 19.45 (13)°

Effects of matrine on collagen proliferation and TNF-α, TGF-β1 and CTGF in atrial tissues of dogs with persistent atrial fibrillation

目的 探讨苦参碱对犬心房颤动（房颤）心房肌组织中胶原合成以及肿瘤坏死因子（tumor necrosis factor alpha,TNF-α）、转化生长因子（transforming growth factor-β1，TGF-β1）和结缔组织生长因子（connective Tissue Growth Factor，CTGF）表达变化的影响。方法 健康比格犬10只采用快速右心室起搏造房颤模型，随机分成房颤组和房颤+苦参碱组各5只。采用天狼星红染色，计算胶原容积分数（collagen volume fraction，CVF）以测定纤维化程度；采用免疫组织化学法检测右心房TNF-α、TGF-β1和CTGF的蛋白表达情况；用逆转录-聚合酶链反应（RT-PCR）技术检测TNF-α、TGF-β1和CTGF的mRNA水平表达情况。结果 与房颤组相比，房颤+苦参碱组纤维化程度降低，CVF明显下降（P＜0.05），TNF-α、TGF-β1和CTGF蛋白表达水平下降，且TNF-α和TGF-β1的mRNA表达水平显著下降（P＜0.05，P＜0.01）。结论 苦参碱可能通过抑制TNF-α、TGF-β1和CTGF的表达，抑制房颤心房肌胶原合成，改善心房组织纤维化程度。Objective:To study the effects of matrine (mat) on collagen synthesis and expression of tumor necrosis factoralpha (TNF-α), and transforming growth factor-β1 (TGF-β1) and connective tissue growth factor (CTGF) in atrial tissues of dogs with persistent atrial fibrillation (AF). Methods : Ten healthy beagle dogs were randomly divided into two groups: AF group (n=5) and AF/Mat group (n=5), using right ventricular pacing to establish AF model. The collagen volume fraction (CVF) in atrial tissue were detected by sirius red staining to determine the level of fabrication. The level of TNF-α, TGF-β1 and CTGF were detected by immunohisto-chemistry. The mRNA expression level of TNF-α, TGF-β1 and CTGF were detected by reverse transcription-polymerase chain reaction (RT-PCR). Results:  Compared with the AF group, the fabriation level of AF/Mat was decreased obviously (P<0.05), the expression levels of TNF-α, TGF-β1 and CTGF were decreased, and the mRNA expression level were decreased significantly in atrial tissues (P<0.05 and P<0.01). Conclusion: Matrine may inhibits fabrosis in atrial tissues through inhibition collagen proliferation and expression of TNF-α, TGF-β1 and CTGF

Near Isometric Biomass Partitioning in Forest Ecosystems of China

Based on the isometric hypothesis, belowground plant biomass (MB) should scale isometrically with aboveground biomass (MA) and the scaling exponent should not vary with environmental factors. We tested this hypothesis using a large forest biomass database collected in China. Allometric scaling functions relating MB and MA were developed for the entire database and for different groups based on tree age, diameter at breast height, height, latitude, longitude or elevation. To investigate whether the scaling exponent is independent of these biotic and abiotic factors, we analyzed the relationship between the scaling exponent and these factors. Overall MB was significantly related to MA with a scaling exponent of 0.964. The scaling exponent of the allometric function did not vary with tree age, density, latitude, or longitude, but varied with diameter at breast height, height, and elevation. The mean of the scaling exponent over all groups was 0.986. Among 57 scaling relationships developed, 26 of the scaling exponents were not significantly different from 1. Our results generally support the isometric hypothesis. MB scaled near isometrically with MA and the scaling exponent did not vary with tree age, density, latitude, or longitude, but increased with tree size and elevation. While fitting a single allometric scaling relationship may be adequate, the estimation of MB from MA could be improved with size-specific scaling relationships

Toksičnost aromatskih ketona za stanice kvasca i ubrzanje njihove redukcije primjenom adsorpcijskih smola

Asymmetric reduction of the prochiral aromatic ketone catalyzed by yeast cells is one of the most promising routes to produce its corresponding enantiopure aromatic alcohol, but the space-time yield does not meet people’s expectations. Therefore, the toxicity of aromatic ketone and aromatic alcohol to the yeast cell is investigated in this work. It has been found that the aromatic compounds are poisonous to the yeast cell. The activity of yeast cell decreases steeply when the concentration of acetophenone (ACP) is higher than 30.0 mmol/L. Asymmetric reduction of acetophenone to chiral S-α-phenylethyl alcohol (PEA) catalyzed by the yeast cell was chosen as the model reaction to study in detail the promotion effect of the introduction of the resin adsorption on the asymmetric reduction reaction. The resin acts as the substrate reservoir and product extraction agent in situ. It has been shown that this reaction could be remarkably improved with this technique when the appropriate kind of resin is applied. The enantioselectivity and yield are acceptable even though the initial ACP concentration reaches 72.2 mmol/L.Asimetrična redukcija prokiralnih aromatskih ketona, katalizirana stanicama kvasca, obećavajuća je metoda proizvodnje enantiomerno čistih aromatskih alkohola, no iskorištenje reakcije ne zadovoljava današnje potrebe. U radu je utvrđena toksičnost aromatskih ketona i alkohola za stanice kvasca. Aktivnost stanica kvasca naglo se smanjila pri koncentracijama acetofenona većim od 30 mmol/L. Kao model reakcije za detaljno ispitivanje pozitivnog učinka uvođenja adsorpcijskih smola odabrana je asimetrična redukcija acetofenona u kiralni S-α-feniletilni alkohol, katalizirana stanicama kvasca. Utvrđeno je da smola djeluje kao rezervoar supstrata i agens za ekstrakciju proizvoda in situ. Tako se odvijanje reakcije može znatno poboljšati uvođenjem prikladne smole. Enantioselektivnost i prinos su zadovoljavajući iako je početna koncentracija acetofenona dosegla čak 72,2 mmol/L