Efficacy of azithromycin combined with intravenous immunoglobulin in the treatment of refractory mycoplasma pneumoniae pneumonia in children: a meta-analysis.

Background: The incidence of refractory Mycoplasma pneumoniae pneumonia (RMPP) in children is increasing, posing a serious threat to life safety. Intravenous immunoglobulin (IVIG) has demonstrated the ability to modulate the immune system and has shown the potential to treat RMPP. This study evaluated the clinical efficacy and safety of azithromycin combined with IVIG in the treatment of RMPP in children through a meta-analysis.

Comparative Analysis of the Metabolome and Transcriptome between the Green and Yellow-Green Regions of Variegated Leaves in a Mutant Variety of the Tree Species .

In nature, many different factors cause plants to develop variegated leaves. To explore the mechanism of variegated leaf formation in , a mutant variety ('Jinyuyuan'), which was induced by ethylmethylsulfone, was selected, and its morphological structure, physiology, biochemistry, transcription and metabolism were analysed. According to differences in colour values, the colours were divided into two regions: a green region and a yellow-green region.

Relativistic baryonic jets from an ultraluminous supersoft X-ray source.

The formation of relativistic jets by an accreting compact object is one of the fundamental mysteries of astrophysics. Although the theory is poorly understood, observations of relativistic jets from systems known as microquasars (compact binary stars) have led to a well established phenomenology. Relativistic jets are not expected to be produced by sources with soft or supersoft X-ray spectra, although two such systems are known to produce relatively low-velocity bipolar outflows.

[Relationships between H2O2 metabolism and Ca2+ transport in dormancy-breaking process of nectarine floral buds].

In order to explore regulatory function of H2O2 in bud dormancy release, main effects of three dormancy-breaking treatments (high temperature, hydrogen cyanamide and TDZ) on H2O2 metabolism were determined, and impacts of H2O2 on Ca2+ transport were tested using non-invasive micro-test technique. The results showed that both high temperature and hydrogen cyanamide induced H2O2 accumulation and CAT inhibition were efficient in breaking dormancy during deep dormancy period. However, TDZ showed little impacts on H2O2 metabolism and was much less effective in breaking dormancy.

Epidemiological and genetic diversity of Staphylococcus aureus causing bloodstream infection in Shanghai, 2009-2011.

Objectives: Staphylococcus aureus or methicillin-resistant Staphylococcus aureus (MRSA) has been an important pathogen causing bloodstream infections. Our study aimed to investigate the epidemiological and genetic diversity of clinical S. aureus isolates from patients with bloodstream infection in four hospitals of Shanghai from 2009 to 2011.

Inheritance of hetero-diploid pollen S-haplotype in self-compatible tetraploid Chinese cherry (Prunus pseudocerasus Lindl).

The breakdown of self-incompatibility, which could result from the accumulation of non-functional S-haplotypes or competitive interaction between two different functional S-haplotypes, has been studied extensively at the molecular level in tetraploid Rosaceae species. In this study, two tetraploid Chinese cherry (Prunus pseudocerasus) cultivars and one diploid sweet cherry (Prunus avium) cultivar were used to investigate the ploidy of pollen grains and inheritance of pollen-S alleles. Genetic analysis of the S-genotypes of two intercross-pollinated progenies showed that the pollen grains derived from Chinese cherry cultivars were hetero-diploid, and that the two S-haplotypes were made up of every combination of two of the four possible S-haplotypes.

First report of Klebsiella oxytoca strain coproducing KPC-2 and IMP-8 carbapenemases.

The study shows for the first time the presence of the Klebsiella oxytoca strain fp10 coproducing plasmid-mediated KPC-2 and IMP-8 carbapenemases. The strain was obtained from the fecal sample of an inpatient and showed high-level resistance to imipenem and ertapenem (MICs > 32 μg/ml). Conjugation experiments demonstrated the transferability of the carbapenem-resistant determinants.

[Effects of exogenous nitric oxide on highbush blueberry PSII photochemical activity and antioxidant system under high temperature stress].

Taking the test tube 'Duke' highbush blueberry (Vaccinium corymbosum) seedlings having been transplanted to the field for 6 months as test materials, this paper studied the effects of exogenous nitric oxide (NO) on their growth, PS II photochemical activity, and antioxidant system under high temperature stress. Applying 0.2, 0.

High prevalence of CTX-M β-lactamases in faecal Escherichia coli strains from healthy humans in Fuzhou, China.

Background: The community could be a reservoir of antibiotic resistance genes. The aim of this study was to investigate the prevalence and genetic environments of bla(CTX-M) among faecal Escherichia coli obtained from healthy persons in a region of China.

Methods: Bacteria in stool specimens were screened for extended-spectrum β-lactamase (ESBL) production on 2 MacConkey agars, one with cefotaxime and one with ceftazidime.

[Study on the genetic diversity of natural chestnut of Shandong by ISSR].

The genetic diversity of 279 indivdiuals from 10 populations in Shandong Province was investigated using inter-simple sequence repeat (ISSR) markers. As a result, 116 bands were amplified by 10 informative and reliable primers, of which 101 were polymorphic loci. A relatively high level of genetic diversity was revealed: PPL = 87.

[Protective immunity induced by recombinant signaling protein 14-3-3 vaccine of Schistosoma japonicum].

Objective: To evaluate the immunoprotective effect of Schistosoma japonicum (Chinese strain) recombinant signaling protein 14-3-3 (rSj14-3-3), and to observe the synergism of rSj14-3-3 and rSjGST proteins as candidate vaccine and the effect of gamma delta-T cells activated by Mtb against Schistosoma japonicum.

Methods: BALB/c mice immunized with rSj14-3-3 and rSjGST purified through SDS-PAGE, electroelution and dialysis were challenged by cercaria infection. Six weeks after challenging infection, the mice were killed and the worm and egg reduction rates were calculated.