Evaluation of taste active peptides and amino acids from anchovy proteins in fish sauce by in silico approach.

Enzymatic activity and microbial fermentation play a prominent role in the bioconversion of complex muscle tissue into smaller units of peptides and amino acids, possibly contribute to sensory properties. Thus, this study screens and evaluate anchovy proteins with taste-active peptides and amino acids by the reaction of multiple enzymes using an in silico approach. Information about sensory components was provided based on an in silico analysis using tools available in the BIOPEP-UWM database. Proteins from anchovy, namely myosin heavy chain 6 alpha, myosin light chain 1, cytochrome B, and NADH ubiquinone oxidoreductase, were subjected to in silico digestion with the combination of 23 enzymes. This led to the release of taste-active peptides and amino acids, including umami, sweet, salty, sour, and bitter sensory properties. The combination of multiple enzymes released a more significant number of taste-active peptides and amino acids for both myosins compared to other proteins.

Millijoule few-cycle pulses from staged compression for strong and high field science.

Intense few-cycle laser pulses have a breadth of applications in high energy density science, including particle acceleration and x-ray generation. Multi-amplifier laser system pulses have durations of tens of femtoseconds or longer. To achieve high intensities at the single-cycle limit, a robust and efficient post-compression scheme is required. We demonstrate a staged compression technique using self-phase modulation in thin dielectric media, in which few-cycle pulses can be produced. The few-cycle pulse is then used to generate extreme ultravoilet light via high harmonic generation at strong field intensities and to generate MeV electron beams via laser solid interactions at relativistic intensities.

Polarization-Dependent Self-Injection by Above Threshold Ionization Heating in a Laser Wakefield Accelerator.

We report on the experimental observation of a decreased self-injection threshold by using laser pulses with circular polarization in laser wakefield acceleration experiments in a nonpreformed plasma, compared to the usually employed linear polarization. A significantly higher electron beam charge was also observed for circular polarization compared to linear polarization over a wide range of parameters. Theoretical analysis and quasi-3D particle-in-cell simulations reveal that the self-injection and hence the laser wakefield acceleration is polarization dependent and indicate a different injection mechanism for circularly polarized laser pulses, originating from larger momentum gain by electrons during above threshold ionization. This enables electrons to meet the trapping condition more easily, and the resulting higher plasma temperature was confirmed via spectroscopy of the XUV plasma emission.

Observation of acceleration and deceleration in gigaelectron-volt-per-metre gradient dielectric wakefield accelerators.

There is urgent need to develop new acceleration techniques capable of exceeding gigaelectron-volt-per-metre (GeV m(-1)) gradients in order to enable future generations of both light sources and high-energy physics experiments. To address this need, short wavelength accelerators based on wakefields, where an intense relativistic electron beam radiates the demanded fields directly into the accelerator structure or medium, are currently under intense investigation. One such wakefield based accelerator, the dielectric wakefield accelerator, uses a dielectric lined-waveguide to support a wakefield used for acceleration. Here we show gradients of 1.347±0.020 GeV m(-1) using a dielectric wakefield accelerator of 15 cm length, with sub-millimetre transverse aperture, by measuring changes of the kinetic state of relativistic electron beams. We follow this measurement by demonstrating accelerating gradients of 320±17 MeV m(-1). Both measurements improve on previous measurements by and order of magnitude and show promise for dielectric wakefield accelerators as sources of high-energy electrons.

The trend of caesarean delivery in the Islamic Republic of Iran.

The Islamic Republic of Iran has witnessed a sharp increase in the number of caesarean sections in the past two decades. This study shows the trend of caesarean sections in the country, focusing on the probable causes of the increase during the past 30 years. The caesarean section rate was 35% in 2000 and increased to 48% in 2009. The study shows that there is a very wide range of prevalence of caesarean section rates in the country. This would indicate that most caesarean sections in our country are not medically indicated, although perhaps in some areas there are not enough caesarean sections. There is a need for research on health outcomes for mothers and infants associated with caesarean delivery without a medical or obstetrical indication. A more detailed examination is needed of mother, insurer, hospital and provider attitudes toward elective caesareans.

Vasopressin modulates social recognition-related activity in the left temporoparietal junction in humans.

The neuropeptide vasopressin is a key molecular mediator of social behavior in animals and humans, implicated in anxiety and autism. Social recognition, the ability to assess the familiarity of others, is essential for appropriate social interactions and enhanced by vasopressin; however, the neural mechanisms mediating this effect in humans are unknown. Using functional magnetic resonance imaging (fMRI) and an implicit social recognition matching task, we employed a double-blinded procedure in which 20 healthy male volunteers self-administered 40 UI of vasopressin or placebo intranasally, 45 min before performing the matching task in the scanner. In a random-effects fMRI analysis, we show that vasopressin induces a regionally specific alteration in a key node of the theory of mind network, the left temporoparietal junction, identifying a neurobiological mechanism for prosocial neuropeptide effects in humans that suggests novel treatment strategies.

Monitoring and enforcement of the salt iodization programme in Tabriz, Islamic Republic of Iran: a successful experience.

After a successful programme to prevent iodine deficiency disorders in the Islamic Republic of Iran in the 1990s and early 2000s, evidence emerged that urine iodine levels in the population were falling. This paper reviews efforts to monitor and enforce the iodization of salt production and shows the resulting improvements in iodization levels of factory table Salt and in urine iodine concentrations of primary-school children in East Azerbaijan province. Reaching targets for elimination of iodine deficiency disorders requires efficient monitoring of the population's iodine levels combined with monitoring of the iodine content of table salt and enforcement of iodization regulations.

Comparative study of climacteric symptoms in perimenopausal and postmenopausal women in Tabriz, Islamic Republic of Iran.

The aim of this cross-sectional study was to describe menopausal symptoms in Iranian women in Tabriz, north-west Islamic Republic of Iran. A total of 200 women aged 45-55 years completed a Farsi version of the Greene climacteric scale. The mean total Greene scores for 20 items (1 item was excluded) were 29.34 (SD 9.84) for perimenopausal and 28.14 (SD 10.15)for postmenopausal women. Perimenopausal and postmenopausal women did not differ significantly in any of the subscales or individual items, except on 2 items: "difficulty in sleeping" and "parts of the body feeling numb or tingling". Comparisons with studies in other countries show that women in Tabriz suffer more menopausal symptoms than European woman.

Localized Cutaneous Leishmaniasis due to Leishmania infantum in a Patient Treated with Infliximab.

We report the first case of cutaneous leishmaniasis in a patient treated with infliximab. The species was Leishmania infantum, agent of both cutaneous leishmaniasis and visceral leishmaniasis. Cutaneous leishmaniasis occurred after the 9th infusion of infliximab in a patient who was suffering from ankylosing spondylitis.

Fungal pathogen protection in potato by expression of a plant defensin peptide.

Defensins are small cysteine-rich peptides with antimicrobial activity. We demonstrate that the alfalfa antifungal peptide (alfAFP) defensin isolated from seeds of Medicago sativa displays strong activity against the agronomically important fungal pathogen Verticillium dahliae. Expression of the alfAFP peptide in transgenic potato plants provides robust resistance in the greenhouse. Importantly, this resistance is maintained under field conditions. There have been no previous demonstrations of a single transgene imparting a disease resistance phenotype that is at least equivalent to those achieved through current practices using fumigants.

Characterization of acquired resistance in lesion-mimic transgenic potato expressing bacterio-opsin.

The lesion-mimic mutants of certain plants display necrotic lesions resembling those of the hypersensitive response and activate local and systemic defense responses in the absence of pathogens. We have engineered a lesion-mimic phenotype in transgenic Russet Burbank potato plants through constitutive expression of a bacterio-opsin (bO) proton pump derived from Halobacterium halobium. Transgenic potato plants exhibiting a lesion-mimic phenotype had increased levels of salicylic acid and overexpressed several pathogenesis-related messenger RNAs, all hallmarks of systemic acquired resistance (SAR). The lesion-mimic plants also displayed enhanced resistance to the US1 isolate (A1 mating type) of a fungal pathogen, Phytophthora infestans, a causal agent of late blight disease. In contrast, little resistance was observed against the US8 isolate (A2 mating type) of this pathogen. Furthermore, a majority of the transgenic plants displaying the lesion-mimic phenotype had increased susceptibility to potato virus X. The tubers of these plants were not resistant to the bacterial pathogen Erwinia carotovora. These results indicate that expression of bO can result in the activation of defense responses in transgenic potato plants and show for the first time that bO expression can confer resistance to a pathogenic fungus. However, our results also demonstrate that like SAR, this "engineered" resistance is likely to be limited to certain pathogens and particular cultivars.