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1.
BACKGROUND: Lymphatic filariasis is a major public health problem in tropical countries. Earlier reports have reported microfilariae as an incidental finding in body fluids and fine needle aspiration smears from various sites. CASES: The findings of body fluid cytology and fine needle aspiration smears from six patients with microfilariae in association with other conditions--tubercular pleural effusion/lymphadenitis, pregnancy and non-Hodgkin's lymphoma--are presented. Three patients demonstrated an associated eosinophilic cellular exudate. Adherence of inflammatory cells to microfilariae was seen in two patients. CONCLUSION: Although microfilariae in cytologic smears are considered incidental findings, the association of microfilariae with debilitating conditions suggests that it is an opportunistic infection and needs further study. 相似文献
2.
Seminal plasma zinc concentration and α-glucosidase activity with respect to semen quality 总被引:2,自引:0,他引:2
Mankad M Sathawara NG Doshi H Saiyed HN Kumar S 《Biological trace element research》2006,110(2):97-106
This study was conducted to examine the relationship between the concentration of zinc and neutral α-glucosidase (NAG) with
semen quality. Semen samples from 75 male partners of couples who were attending the Obstetrics and Gynecology Department
were analyzed for semen quality. Based on sperm count, the subjects were divided into three groups. Zinc and neutral α-glucosidase
activity were estimated in seminal plasma. Results showed that mean the α-glucosidase activity was lowest among the azoospermic
group with respect to oligozoospermic and normozoospermic groups. Mean zinc levels were also lower among azoospermics compared
to oligozoospermic and normospermic groups. The difference was statistically significant (p<0.05). A significant positive correlation was observed between zinc levels and sperm count (r=0.29, p<0.05) and zinc and α-glucosidase activity (r=0.31, p<0.05) in seminal plasma. These results suggest that zinc and neutral α-glucosidase seem to play an important role in human
reproduction. 相似文献
3.
Here we describe the biosynthesis and characterization of fluorinated protein block polymers comprised of the two self-assembling domains (SADs): elastin (E) and the coiled-coil region of cartilage oligomeric matrix proteins (C). Fluorination is achieved by residue-specific incorporation of p-fluorophenylalanine (pFF) to create pFF-EC, pFF-CE, and pFF-ECE. Global fluorination results in downstream effects on the temperature-dependent secondary structure, supramolecular assembly, and bulk mechanical properties. The impact of fluorination on material properties also differs depending on the orientation of the block configurations as well as the number of domains in the fusion. These studies suggest that integration of fluorinated amino acids within protein materials can be employed to tune the material properties, especially mechanical integrity. 相似文献
4.
Keharia Haresh Patel Hardik Madamwar Datta 《World journal of microbiology & biotechnology》2004,20(4):365-370
The nonspecific ability of anaerobic sludge bacteria obtained from cattle dung slurry was investigated for 17 different dyes
in a batch assay system using sealed serum vials. Experiments using Reactive Violet 5 (RV 5) showed that sludge bacteria could
effectively decolorize solutions having dye concentrations up to 1000 mg l−1 with a decolorization efficiency of above 75% during 48 h of incubation. Headspace gas composition of anaerobic batch systems
for varying dye concentration revealed that lower concentrations of RV 5 (upto 500 mg l−1) were found to be stimulatory to the methanogenic activity of sludge bacteria. However at higher dye concentrations, the
headspace gas composition was found to be similar to batch assay controls without dye, indicating that dye at higher concentrations
was inhibitory to methanogenic bacteria of sludge. The optimum inoculum and incubation temperature for maximum decolorization
of RV 5 was found to be 9.0 g l−1(in terms of total solids) and 37°C, respectively. Of sixteen other dyes tested, nine (Reactive Black 5, Reactive Blue 31,
Reactive Blue 28, Reactive Red HE8B, Reactive Yellow, Reactive Golden Yellow, Mordant Orange, Novatic Olive R S/D & Navilan
Yellow GL) were decolorized with more than 88% efficiency; three (Orange II, Navy Blue HER & Novatic Blue BC S/D) were decolorized
with about 50–65% efficiency, whereas other three dyes (Procion Orange H2R, Procion Brilliant Blue HGR & Novatic Blue BC S/D)
were decolorized with less than 40% efficiency. Though Ranocid Fast Blue was decolorized with about 92.5% efficiency, this
was merely due to sorption, whereas the other dyes were decolorized due to biotransformation. 相似文献
5.
Prospero JM Blades E Naidu R Mathison G Thani H Lavoie MC 《International journal of biometeorology》2008,52(8):823-832
Asthma is epidemic in developed and developing countries including those in the Caribbean where it is widely believed that
African dust, transported in high concentrations in the Trade Winds every year, is a major causative factor. The link between
asthma and dust in the Caribbean is based largely on anecdotal evidence that associates sharp increases in the occurrence
of asthma symptoms with hazy conditions often caused by dust. Here we report on a 2-year study of the relationship between
the daily concentrations of dust measured in on-shore Trade Winds at Barbados and pediatric asthma attendance rates at Queen
Elizabeth Hospital (QEH). We looked for large increases in QEH daily attendances in relation to daily dust concentrations
as previously suggested by anecdotal observations. We could not find any obvious relationship although there may be more subtle
linkages between dust and asthma. Our measurements show, however, that the concentration of dust in the size range under 2.5 μm
diameter is sufficiently high as to challenge United States Environmental Protection Agency air quality standards for respirable
particles. Thus, African dust may constitute a health threat of a different nature, producing symptoms less obvious than those
of asthma. 相似文献
6.
Khyati V. Pathak Anjali Bose Hareshkumar Keharia 《International journal of peptide research and therapeutics》2014,20(2):133-143
Microbes are known to interact and communicate with their neighbouring cells by releasing diverse types of low molecular weight diffusible metabolites. This paper describes the identification of iturins, fengycins and surfactins secreted by Bacillus tequilensis P15 isolated from sea coast of Jakhao, Kutch, India, using liquid chromatography coupled electron spray ionization tandem mass spectrometry. In methanol soluble fraction of acid precipitate harvested from cell free supernatant of B. tequilensis P15, 5 variants of iturins, 6 of fengycins and 39 surfactins could be identified. In particular, new surfactins with Ile/Leu at position 5 and Asp at position 6 in the peptide chain were discovered, which have not been previously reported. A novel class of novel surfactin consisting of Glu/methyl ester of Asp at position 5 in peptide chain was also identified. In addition, several linear forms of surfactins were also identified in the methanol soluble extracellular fraction of B. tequilensis P15. This is the first report on co-production of all the three classes of cyclic lipopeptides by a marine isolate B. tequilensis. 相似文献
7.
Chao Wang Weiping Zhang Deepal Haresh Ajmera Yun Zhang Yubo Fan Ping Ji 《Biomechanics and modeling in mechanobiology》2016,15(3):701-712
Dental implants have to be placed with the long axis in different angulations due to the change in bone morphology. The objective of this study was to investigate the different bone remodeling response induced by the tilted dental implants and to assess whether it could lead to bone loss and implant failure. In this study, bone remodeling due to palato-labially inclined dental implants placed in the anterior maxillary incisor region was simulated. CT-based finite element models of a maxillary bone with dental implants were created herein. Five dental implants were placed at \(+10^{\circ }\), \(+5^{\circ }\), \(0^{\circ }\), \(-5^{\circ }\) and \(-10^{\circ }\), respectively. The remodeling progression was recorded and compared. Model \(-10^{\circ }\) (palatal side) shows the highest bone density values, but the inclined implant at \(+10^{\circ }\) (labial side) leads to significant bone loss. From a biomechanical perspective, it is speculated that a palatally inclined implant is more likely to enhance the bone density in the maxillary anterior region, but labial inclination of implant could jeopardize its stability. 相似文献
8.
Uniform and monodispersed silica nanoparticles were synthesized with a mean diameter of 100 ± 20 nm as analyzed by Transmission Electron Microscopy (TEM). Glutaraldehyde was used as a coupling agent for efficient binding of the lipase onto the silica nanoparticles. For the hydrolysis of pNPP at pH 7.2, the activation energy within 25–40 °C for free and immobilized lipase was 7.8 and 1.25 KJ/mol, respectively. The Vmax and Km of immobilized lipase at 25 °C for pNPP hydrolysis were found to be 212 μmol/min/mg and 0.3 mM, whereas those for free lipase were 26.17 μmol/min and 1.427 mM, respectively. The lower activation energy of immobilized lipase in comparison to free lipase suggests a change in conformation of the enzyme leading to a requirement for lower energy on the surface of the nanoparticles. A better yield (7 fold higher) of ethyl isovalerate was observed using lipase immobilized onto silica nanoparticles in comparison to free lipase. 相似文献
9.
Synthetic dyes are extensively used in wide range of industries amongst which textile processing industries are the major consumers. Large amounts of dyes are lost in wastewaters of these industries during dyeing and subsequent washing steps of textiles. These dyes are resistant to de gradation by conventional wastewater treatment plants and are released into environment untreated thus causing pollution of surface and ground waters in the areas of the world harboring such industries. Presence of color in wastewaters has become major environmental concern and stringent discharge standards are being enforced on release of colored wastewaters in environment. The seriousness of the problem is apparent from the magnitude of the research done in this field in last decade. Increasing number of microorganisms are being described for their ability to decolorize and degrade artificial dyes and novel bioremediation approaches for treatment dye bearing wastewaters are being worked out. In this review we have investigated potential microbial processes for developing feasible remediation technology to combat environmental pollution due to dye bearing wastewaters. 相似文献
10.