248 research outputs found
Future directions for food security and diversity partnership and research strategy for sorghum
Future demand for sorghum is going to be different from the demand pattern observed at present
and in the past. The demand for sorghum grain as food is expected to decline in the future while its
demand as poultry feed, flour, ethanol (biofuel) and alcoholic beverages is going to increase. The
demand for sorghum – both green and dry plants – as livestock feed will also go up. It is also
expected that the demand for sorghum grain and stalk for industrial end use in nutrition and health
products would increase. Thus, sorghum will essentially enhance the performance of integrated
crop-livestock systems and improve options for commercialization in semi-arid agriculture.
Therefore, any strategy to promote sorghum must be designed from this perspective.
In addition to the shifts in demand for sorghum grain and stalk, the vast developments in
science and scientific tools can be used for germplasm evaluation, selection, screening and
development of new cultivars and their utilization. The progress in Information and
Communication Technology (ICT) can lead to the dissemination of knowledge and technology and
the management and coordination of networks and partnerships. Visible changes have occurred in
seed policies and seed delivery systems in countries where ICRISAT is operating. The new
millennium has led to a new vision and strategies of the donor community. At present, agricultural
research is viewed as a mechanism to alleviate poverty and hunger, ensure food security and sustain
the livelihoods of poor communities around the world rather than just a means of increasing
productivity. Considering these factors and the findings reported in previous chapters, there is a
need to devise future strategies for sorghum breeding and partnership, formulate technology
exchange policies and pave pathways for promoting diversity in sorghum cultivation
Introduction.Sorghum Genetic Enhancement: Research Process
Sorghum [Sorghum bicolor (L.) Moench] is the fifth most important cereal crop in the world, after
wheat, maize, rice and barley. It is cultivated in wide geographic areas in the Americas, Africa, Asia
and the Pacific. It is the second major crop (after maize) across all agroecologies in Africa. It is the
third important cereal (after rice and wheat ) in India. Sorghum was grown in 100 countries of the
world in the year 2003, covering an area of approximately 44 million ha with grain production of 59
million t and average productivity of 1.34 t ha-1 (FAO website: http://www.fao.org). Sorghum
occupies 24 m ha in Africa (mostly in Ethiopia, Mali, Nigeria and Sudan), 12 m ha in Asia (China,
India, Myanmar, Pakistan, Saudi Arabia, Thailand and Yemen), 3.5 m ha in Central and South
America (Argentina, Brazil, Colombia, Honduras, Mexico and Venezuela), 3.1 m ha in the USA
and 0.5 m ha in Australia. Asia and Africa together contributed about 59% (34.5 million t) of the
total world production in 2003. The crop is mainly grown in tropical and subtropical areas where
agroclimatic conditions such as rainfall, soil and temperature are variable. Much of the crop is
produced in the more marginal and stress-prone areas of the semi-arid tropics (SAT), mainly on
smallholdings
Enteral lactoferrin supplementation for very preterm infants: a randomised placebo-controlled trial
Background
Infections acquired in hospital are an important cause of morbidity and mortality in very preterm infants. Several small trials have suggested that supplementing the enteral diet of very preterm infants with lactoferrin, an antimicrobial protein processed from cow's milk, prevents infections and associated complications. The aim of this large randomised controlled trial was to collect data to enhance the validity and applicability of the evidence from previous trials to inform practice.
Methods
In this randomised placebo-controlled trial, we recruited very preterm infants born before 32 weeks' gestation in 37 UK hospitals and younger than 72 h at randomisation. Exclusion criteria were presence of a severe congenital anomaly, anticipated enteral fasting for longer than 14 days, or no realistic prospect of survival. Eligible infants were randomly assigned (1:1) to receive either enteral bovine lactoferrin (150 mg/kg per day; maximum 300 mg/day; lactoferrin group) or sucrose (same dose; control group) once daily until 34 weeks' postmenstrual age. Web-based randomisation minimised for recruitment site, gestation (completed weeks), sex, and single versus multifetal pregnancy. Parents, caregivers, and outcome assessors were unaware of group assignment. The primary outcome was microbiologically confirmed or clinically suspected late-onset infection (occurring >72 h after birth), which was assessed in all participants for whom primary outcome data was available by calculating the relative risk ratio with 95% CI between the two groups. The trial is registered with the International Standard Randomised Controlled Trial Number 88261002.
Findings
We recruited 2203 participants between May 7, 2014, and Sept 28, 2017, of whom 1099 were assigned to the lactoferrin group and 1104 to the control group. Four infants had consent withdrawn or unconfirmed, leaving 1098 infants in the lactoferrin group and 1101 in the sucrose group. Primary outcome data for 2182 infants (1093 [99·5%] of 1098 in the lactoferrin group and 1089 [99·0] of 1101 in the control group) were available for inclusion in the modified intention-to-treat analyses. 316 (29%) of 1093 infants in the intervention group acquired a late-onset infection versus 334 (31%) of 1089 in the control group. The risk ratio adjusted for minimisation factors was 0·95 (95% CI 0·86–1·04; p=0·233). During the trial there were 16 serious adverse events for infants in the lactoferrin group and 10 for infants in the control group. Two events in the lactoferrin group (one case of blood in stool and one death after intestinal perforation) were assessed as being possibly related to the trial intervention.
Interpretation
Enteral supplementation with bovine lactoferrin does not reduce the risk of late-onset infection in very preterm infants. These data do not support its routine use to prevent late-onset infection and associated morbidity or mortality in very preterm infants.
Funding
UK National Institute for Health Research Health Technology Assessment programme (10/57/49)
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Enteral lactoferrin supplementation for very preterm infants: a randomised placebo-controlled trial
Background
Infections acquired in hospital are an important cause of morbidity and mortality in very preterm infants. Several small trials have suggested that supplementing the enteral diet of very preterm infants with lactoferrin, an antimicrobial protein processed from cow's milk, prevents infections and associated complications. The aim of this large randomised controlled trial was to collect data to enhance the validity and applicability of the evidence from previous trials to inform practice.
Methods
In this randomised placebo-controlled trial, we recruited very preterm infants born before 32 weeks' gestation in 37 UK hospitals and younger than 72 h at randomisation. Exclusion criteria were presence of a severe congenital anomaly, anticipated enteral fasting for longer than 14 days, or no realistic prospect of survival. Eligible infants were randomly assigned (1:1) to receive either enteral bovine lactoferrin (150 mg/kg per day; maximum 300 mg/day; lactoferrin group) or sucrose (same dose; control group) once daily until 34 weeks' postmenstrual age. Web-based randomisation minimised for recruitment site, gestation (completed weeks), sex, and single versus multifetal pregnancy. Parents, caregivers, and outcome assessors were unaware of group assignment. The primary outcome was microbiologically confirmed or clinically suspected late-onset infection (occurring >72 h after birth), which was assessed in all participants for whom primary outcome data was available by calculating the relative risk ratio with 95% CI between the two groups. The trial is registered with the International Standard Randomised Controlled Trial Number 88261002.
Findings
We recruited 2203 participants between May 7, 2014, and Sept 28, 2017, of whom 1099 were assigned to the lactoferrin group and 1104 to the control group. Four infants had consent withdrawn or unconfirmed, leaving 1098 infants in the lactoferrin group and 1101 in the sucrose group. Primary outcome data for 2182 infants (1093 [99·5%] of 1098 in the lactoferrin group and 1089 [99·0] of 1101 in the control group) were available for inclusion in the modified intention-to-treat analyses. 316 (29%) of 1093 infants in the intervention group acquired a late-onset infection versus 334 (31%) of 1089 in the control group. The risk ratio adjusted for minimisation factors was 0·95 (95% CI 0·86–1·04; p=0·233). During the trial there were 16 serious adverse events for infants in the lactoferrin group and 10 for infants in the control group. Two events in the lactoferrin group (one case of blood in stool and one death after intestinal perforation) were assessed as being possibly related to the trial intervention.
Interpretation
Enteral supplementation with bovine lactoferrin does not reduce the risk of late-onset infection in very preterm infants. These data do not support its routine use to prevent late-onset infection and associated morbidity or mortality in very preterm infants.
Funding
UK National Institute for Health Research Health Technology Assessment programme (10/57/49)
Development of NILs from heterogeneous inbred families for validating the rust resistance QTL in peanut (Arachis hypogaea L.)
Heterogeneous inbred families segregating for rust resistance were identified from the two crosses involving susceptible (TAG 24 and TG 26) and resistant (GPBD 4) varieties of peanut. Rust-resistant (less than score 5) and rust-susceptible (more than score 5) plants were identified in each HIF and evaluated under rust epiphytotic conditions. The set of plants belonging to the same HIF, but differing significantly in rust resistance, not in other morphological and productivity traits, was regarded as near-isogenic lines (NILs). Largely, rust-resistant NILs had GPBD 4-type allele, and susceptible NILs carried either TAG 24 or TG 26-type allele at the three SSR loci (IPAHM103, GM1536 and GM2301) linked to a major genomic region governing rust resistance. Comparison of the remaining genomic regions between the NILs originating from each of the HIFs using transposon markers indicated a considerably high similarity of 86.4% and 83.1% in TAG 24 × GPPBD 4 and TG 26 × GPBD 4, respectively. These NILs are useful for fine mapping and expression analysis of rust resistance
More anxious than depressed: prevalence and correlates in a 15-nation study of anxiety disorders in people with type 2 diabetes mellitus
Background Anxiety disorder, one of the highly disabling, prevalent and common mental disorders, is known to be more prevalent in persons with type 2 diabetes mellitus (T2DM) than the general population, and the comorbid presence of anxiety disorders is known to have an impact on the diabetes outcome and the quality of life. However, the information on the type of anxiety disorder and its prevalence in persons with T2DM is limited. Aims To assess the prevalence and correlates of anxiety disorder in people with type 2 diabetes in different countries.
Methods People aged 18–65 years with diabetes and treated in outpatient settings were recruited in 15 countries and underwent a psychiatric interview with the Mini-International Neuropsychiatric Interview. Demographic and medical record data were collected. Results A total of 3170 people with type 2 diabetes (56.2% women; with mean (SD) duration of diabetes 10.01 (7.0) years) participated. The overall prevalence of anxiety disorders in type 2 diabetic persons was 18%; however, 2.8% of the study population had more than one type of anxiety disorder. The most prevalent anxiety disorders were generalised anxiety disorder (8.1%) and panic disorder (5.1%). Female gender, presence of diabetic complications, longer duration of diabetes and poorer glycaemic control (HbA1c levels) were significantly associated with comorbid anxiety disorder. A higher prevalence of anxiety disorders was observed in Ukraine, Saudi Arabia and Argentina with a lower prevalence in Bangladesh and India.
Conclusions Our international study shows that people with type 2 diabetes have a high prevalence of anxiety disorders, especially women, those with diabetic complications, those with a longer duration of diabetes and poorer glycaemic control. Early identification and appropriate timely care of psychiatric problems of people with type 2 diabetes is warranted
Endophytic fungi from the roots of horseradish (Armoracia rusticana) and their interactions with the defensive metabolites of the glucosinolate myrosinase – isothiocyanate system
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Balanced amino acid and higher micronutrients in millets complements legumes for improved human dietary nutrition
Background and objectives: More than 2 billion people suffer with malnutrition
arising from dietary protein and micronutrients deficiencies. To enhance the dietary
nutrient quality, the current study used two largely grown varieties of finger millet,
pearl millet, pigeonpea, and chickpea to evaluate the effect of millet–legume
blends for their enhanced protein digestibility, amino acid profiles, and essential
micronutrients.
Findings: Our study revealed the presence of significant levels of proteins (6.3%–
22.3%), essential amino acids, and micronutrients (Fe: 2.6–8.5 mg; Zn: 2–5.5 mg;
Ca: 22‐450 mg in 100 g) in these varieties. When specific millets combined with
legumes in 3:1 proportion, significantly enhanced nutritional value of food by providing
a balanced amino acid with good protein digestibility, and high levels of iron
(7.58 mg) and zinc (4.96 mg) with 100 g of pearl millet and calcium (400.57 mg)
with 100 g of finger millet.
Conclusions: Pigeonpea and chickpea have a good level of proteins with essential
amino acids except methionine and cysteine, whereas millet had balanced amino
acid including methionine and cysteine (50% higher) and much higher levels of micronutrients
(Fe, Zn and Ca). Therefore, specific millets and legumes combination
complemented higher levels of micronutrients in addition to complete proteins to
support comprehensive human nutrition.
Significance and novelty: This study opens prospects for selecting complementary
nutrient‐dense varieties for household consumption. Industries can explore these
product developments significantly to reduce malnutrition if consumed adequately,
which is not possible with polished rice, refined wheat flour or maize even if it is
combined with legumes
The Princeton Protein Orthology Database (P-POD): A Comparative Genomics Analysis Tool for Biologists
Many biological databases that provide comparative genomics information and tools are now available on the internet. While certainly quite useful, to our knowledge none of the existing databases combine results from multiple comparative genomics methods with manually curated information from the literature. Here we describe the Princeton Protein Orthology Database (P-POD, http://ortholog.princeton.edu), a user-friendly database system that allows users to find and visualize the phylogenetic relationships among predicted orthologs (based on the OrthoMCL method) to a query gene from any of eight eukaryotic organisms, and to see the orthologs in a wider evolutionary context (based on the Jaccard clustering method). In addition to the phylogenetic information, the database contains experimental results manually collected from the literature that can be compared to the computational analyses, as well as links to relevant human disease and gene information via the OMIM, model organism, and sequence databases. Our aim is for the P-POD resource to be extremely useful to typical experimental biologists wanting to learn more about the evolutionary context of their favorite genes. P-POD is based on the commonly used Generic Model Organism Database (GMOD) schema and can be downloaded in its entirety for installation on one's own system. Thus, bioinformaticians and software developers may also find P-POD useful because they can use the P-POD database infrastructure when developing their own comparative genomics resources and database tools
Immunological aspects in chronic lymphocytic leukemia (CLL) development
Chronic lymphocytic leukemia (CLL) is unique among B cell malignancies in that the malignant clones can be featured either somatically mutated or unmutated IGVH genes. CLL cells that express unmutated immunoglobulin variable domains likely underwent final development prior to their entry into the germinal center, whereas those that express mutated variable domains likely transited through the germinal center and then underwent final development. Regardless, the cellular origin of CLL remains unknown. The aim of this review is to summarize immunological aspects involved in this process and to provide insights about the complex biology and pathogenesis of this disease. We propose a mechanistic hypothesis to explain the origin of B-CLL clones into our current picture of normal B cell development. In particular, we suggest that unmutated CLL arises from normal B cells with self-reactivity for apoptotic bodies that have undergone receptor editing, CD5 expression, and anergic processes in the bone marrow. Similarly, mutated CLL would arise from cells that, while acquiring self-reactivity for autoantigens—including apoptotic bodies—in germinal centers, are also still subject to tolerization mechanisms, including receptor editing and anergy. We believe that CLL is a proliferation of B lymphocytes selected during clonal expansion through multiple encounters with (auto)antigens, despite the fact that they differ in their state of activation and maturation. Autoantigens and microbial pathogens activate BCR signaling and promote tolerogenic mechanisms such as receptor editing/revision, anergy, CD5+ expression, and somatic hypermutation in CLL B cells. The result of these tolerogenic mechanisms is the survival of CLL B cell clones with similar surface markers and homogeneous gene expression signatures. We suggest that both immunophenotypic surface markers and homogenous gene expression might represent the evidence of several attempts to re-educate self-reactive B cells
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