Dihydrodipicolinate synthase (DHDPS) is the main enzyme of a specific branch of the aspartate pathway leading to lysine biosynthesis in higher plants. We have cloned and characterized the
DHDPS
gene ...from
Zizania latifolia
Griseb, which was named
ZlDHDPS
. Sequence analysis indicates that it contains an ORF of 954 bp interrupted by two exons and one intron encoding a polypeptide of 317 amino acids lacking a plastid transit peptide and a stop codon. The sequence of ZlDHDPS has high identity with known plant DHDPS in GenBank. Southern blotting analysis indicates that there are two copies of
Z
.
latifolia DHDPS
(
ZlDHDPS
) gene in the
Z
.
latifolia
nuclear genome. RT-PCR analysis shows the expression of
ZlDHDPS
is tissue specific and high level expression is present in fast-growing tissue and reproductive tissue. The 5′-regulatory sequence of
ZlDHDPS
contains a GT-1 box and a (CA)n element, which may play a role in regulating the expression of
ZlDHDPS
. The fusion construct of the
ZlDHDPS
sequence with the reporter gene GUS was transiently expressed in the onion epidermal cells by particle gun-mediated bombardment suggesting that ZlDHDPS was located in the cytoplasm, different from
DHDPS
gene of other species. Functional complementary analysis showed that
ZlDHDPS
can recover the
DHDPS
-deleted mutant of
Escherichia coli
.
Fluticasone furoate nasal spray (FFNS) is a novel, enhanced-affinity intranasal corticosteroid administered for the management of allergic rhinitis (AR). Several studies have shown that FFNS at a ...dose of 110 μg once daily (o.p.d.) is effective in relieving nasal as well as ocular symptoms in adolescents and adults with AR. The primary objective of this study was to compare the efficacy and safety of FFNS 110 micrograms o.p.d. with matching placebo nasal spray for 2 weeks in Chinese adult and adolescent subjects with intermittent AR (IAR) or persistent AR (PAR). In this multicenter, randomized, double-blind, placebo-controlled, parallel-group study, patients (adults and adolescents aged ≥12 years with AR) received either FFNS 110 micrograms (n = 181) or placebo (n = 182) o.p.d. for 2 weeks. AR was defined according to Allergic Rhinitis and Its Impact on Asthma classification. Efficacy measures included reflective total nasal symptom score (rTNSS), rhinoscopy score, overall interference in activities of daily living (ADL) score, and reflective total ocular symptom score (rTOSS). FFNS significantly improved the mean change from baseline in daily rTNSS compared with placebo (treatment difference of -1.498, 95% confidence interval -1.897, -1.099; p < 0.0001). FFNS was also significantly more effective than placebo in decreasing rhinoscopy score (treatment difference of -1.3; p < 0.0001) and ADL score (treatment difference of -0.4; p < 0.0001). In patients with severe ocular symptoms, FFNS showed numerically better treatment effect in reducing daily rTOSS than placebo (treatment difference of -0.646; p = 0.0853). FFNS 110 micrograms o.p.d. was significantly more effective than placebo in improving nasal symptoms in Chinese patients with IAR and PAR. ClinicalTrials.gov registration number: NCT01231464.
The aim of this study is to survey and compare the development of auditory skills in young children with Mondini dysplasia and profoundly-deaf young children with radiologically normal inner ears ...over a period of 3 years after cochlear implantation. A total of 545 young children (age 7 to 36 months) with prelingual, severe to profound hearing loss participated in this study. All children received cochlear implantation. Based on whether or not there was a Mondini dysplasia as diagnosed with CT scanning, the subjects were divided into 2 groups: (A) 514 young children with radiologically normal inner ears and (B) 31 young children with Mondini dysplasia. The Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) was used to assess the children's auditory skills that include vocalization changes, spontaneous alerting to sounds in everyday living environments, and the ability to derive meaning from sounds. The assessment was performed prior to surgery and at 1, 3, 6, 9, 12, 24, and 36 months after implant device switch-on. The mean scores for overall auditory skills were not significantly different between groups A and B at pre-surgery, 1, 12, 24, and 36 months post-surgery, but were significantly different at 3, 6, and 9 months post-surgery. The mean scores for all auditory skills in children with Mondini dysplasia showed significant improvement over time. The mean scores for the three subcategories of auditory skills in children with Mondini dysplasia also showed significant differences at pre-surgery, 1, 3, 6, and 9 months, however, there were no significant differences at 12, 24, and 36 months. Overall, the auditory skills of young children with Mondini dysplasia developed rapidly after cochlear implantation, in a similar manner to that of young children with radiologically normal inner ears. Cochlear implantation is an effective intervention for young children with Mondini dysplasia.
We substituted autologous lung for the artificial oxygenator to assess reduction of lung injury after conventional cardiopulmonary bypass (CPB). Twelve piglets were randomly divided into two groups. ...Experimental animals (n = 6) underwent bilateral CPB with autologous lungs perfusion, whereas control animals (n = 6) underwent conventional CPB with artificial oxygenator. Bypass and aortic cross clamping time were 135 and 60 minutes, respectively, for each animal. Lung static compliance (Cstat), alveolus-artery oxygen difference (PA-aO2), tumor necrosis factor (TNF)-alpha, interleukin-6, and wet to dry lung weight ratio (W/D) were measured. A single senior pathologist evaluated the lung specimens after experiments. Cstat of experimental group and control group decreased from 14.31 +/- 1.58 to 12.88 +/- 1.92 ml/cmH2O and from 14.80 +/- 2.32 to 10.48 +/- 1.66 ml/cmH2O, respectively; PA-aO2 increased from 15.71 +/- 1.35 to 62.30 +/- 24.29 mm Hg and from 15.23 +/- 2.87 to 77.85 +/- 11.45 mm Hg, respectively; serum concentration of TNF-alpha increased from 0.40 +/- 0.07 ng/ml to 0.56 +/- 0.15 and from 0.41 +/- 0.06 to 0.75 +/- 0.14 ng/ml, respectively; and the w/d were 6.18 +/- 0.55 vs 6.84 +/- 0.30. Pathological examination also confirmed that structural changes of lung specimens were less in experimental group than in control group. Autologous lung may tolerate nonpulsatile perfusion and be used clinically as a substitute for the artificial oxygenator to reduce lung injury after CPB.
This book provides a state-of-the-art account of voice research and issues in clinical voice practice. The contributors are all voice experts and bring a range of international perspectives to the ...volume.
To collect the daily speech materials and to discuss the speech development of normal-hearing pre-school children.
Based on the database of daily speech materials of children who are 3 to 5 years ...old, from separate monosyllabic word to syllable,analysis the frequency of words and compare them with adults.
In the spoken words of children who are 3 to 5 years old, we can find all Mandarin phonemes. With independent sample t test, it was shown that there is no significant difference in the distributing of phonemes between children and adults.
Children who are 3 years old have developed the phonetic system of the language basically.
The purpose of this study is to compare the characteristics of psychophysical tests between cochlear implant children with large vestibular aqueduct syndrome and normal inner ear and to analyse the ...characteristics of psychophysical and impedance tests for cochlear implant patients with large vestibular aqueduct syndrome.
One hundred and thirty-one cochlear implant pre-lingual deafness patients participated in this study. They received cochlear implant surgery at the age of 1.5 to 12 years old from Nov, 1998 to Aug, 2003. The patients were divided into two groups. Group A had 111 patients with normal inner ear. Group B had 20 patients with radiographically proven large vestibular aqueduct syndrome. All of the patients were inserted with Nucleus 24M. The time of the first programming session was approximately 4 weeks after surgery. The psychophysical tests included T and C-Level tests. The programming techniques used in the test were suitable for the age of the patients. The R116 and R126 software were used to
To provide an objective method to estimate T-levels and C-levels using neural response telemetry (NRT) thresholds for children, from whom we can not get accurate responses because they are very young ...or have other disabilities, by comparing NRT thresholds and T/C levels.
Seventy patients implanted with the nucleus CI24M multiple cochlear implant system participated in this study. 329 electrodes were tested. The software used in this study was NRT 2.04. Monopolar stimulation mode was used during NRT threshold measurement. No. 3, 5, 10, 15, 20 electrodes were tested for each patient. The T-levels and C-levels were obtained at the same visit.
92.7% of all the tested electrodes recorded NRT responses. There were variations in the amplitudes and thresholds of NRT responses across subjects and electrodes. NRT thresholds fell within the different points of the MAP dynamic range. The mean of NRT thresholds was shown to fall between the mean of T-levels and C-levels. The NRT thresholds and T/C levels reduced from basa
The aim of this research is to analyse and compare the psychophysical tests in different age of patients with a cochlear implant.
One hundred and seventy patients with Nucleus CI24M cochlear implant ...system participated in this study. The patients were divided into four groups according to their age. They were group A (<3 year), B(3-<6 year) C(6-12 year) and D(>12 year). The psychophysical tests included T and C-Level evaluation.
C-Levels of each electrode (except electrode No. 20) were significantly different between group A and D at the time of one month after switch-on (P<0.01, P<0.05 for the No. 2, 18, 19, 21, 22 electrode). The normalized differences between used C-Levels and C-Levels for group D were significantly higher than the other three groups at the switch-on session (P<0.01, P<0.05 between group D and C). The normalized differences between used C-Levels and C-Levels were significantly different for the group A and D at one week after first programming session (P<0.05).
T and C-Level for different
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