Phosphomevalonate kinase regulates the MVA/MEP pathway in mango during ripening.

Mango is a popular tropical fruit with a great diversity in taste and aroma, contributed primarily by terpenoids. Phosphomevalonate kinase (PMK) is a key enzyme for isoprenoid biosynthesis in the mevalonic acid (MVA) pathway responsible for terpenoids. In this study, two cultivars of mango, "Dashehari" and "Banganpalli", showing opposite spatio-temporal patterns of ripening polarity, were investigated for studying the role of MiPMK in aroma production. MiPMK transcription and enzyme activity increased during ripening in both varieties. Expression in the early-ripening inner zones preceded that in the later-ripening outer zones of "Dashehari" while it was higher in the early ripening outer zones in "Banganpalli". Polypeptide sequences of the two enzymes showed differences in a few amino acids that were also reflected in kinetic properties such as specific activity and pH optima. Silencing of MiPMK in "Dashehari" fruit by VIGS suppressed the kinase activity and led to changes in relative contributions of the mevalonic acid (MVA) and methylerythritol 4-phosphate (MEP) pathways. This also altered the fruit metabolite profile with a reduction/disappearance of sesquiterpenes such as geranyl geraniol, trans-farnesol, ß-caryophyllene, ß-pinene, bisabolene and guaiane but the appearance of menthol and d-limonene in silenced fruit. The study shows that MiPMK levels may control downstream metabolite flux of the MVA pathway in mango.

Comparative transcriptome analysis of unripe and mid-ripe fruit of Mangifera indica (var. "Dashehari") unravels ripening associated genes.

Ripening in mango is under a complex control of ethylene. In an effort to understand the complex spatio-temporal control of ripening we have made use of a popular N. Indian variety "Dashehari" This variety ripens from the stone inside towards the peel outside and forms jelly in the pulp in ripe fruits. Through a combination of 454 and Illumina sequencing, a transcriptomic analysis of gene expression from unripe and midripe stages have been performed in triplicates. Overall 74,312 unique transcripts with ≥1 FPKM were obtained. The transcripts related to 127 pathways were identified in "Dashehari" mango transcriptome by the KEGG analysis. These pathways ranged from detoxification, ethylene biosynthesis, carbon metabolism and aromatic amino acid degradation. The transcriptome study reveals differences not only in expression of softening associated genes but also those that govern ethylene biosynthesis and other nutritional characteristics. This study could help to develop ripening related markers for selective breeding to reduce the problems of excess jelly formation during softening in the "Dashehari" variety.

Assessment of essential newborn care services in secondary-level facilities from two districts of India.

India faces a formidable burden of neonatal deaths, and quality newborn care is essential for reducing the high neonatal mortality rate. We examined newborn care services, with a focus on essential newborn care (ENC) in two districts, one each from two states in India. Nagaur district in Rajasthan and Chhatarpur district in Madhya Pradesh were included. Six secondary-level facilities from the districts-two district hospitals (DHs) and four community health centres (CHCs) were evaluated, where maximum institutional births within districts were taking place. The assessment included record review, facility observation, and competency assessment of service providers, using structured checklists and sets of questionnaire. The domains assessed for competency were: resuscitation, provision of warmth, breastfeeding, kangaroo mother care, and infection prevention. Our assessments showed that no inpatient care was being rendered at the CHCs while, at DHs, neonates with sepsis, asphyxia, and prematurity/low birthweight were managed. Newborn care corners existed within or adjacent to the labour room in all the facilities and were largely unutilized spaces in most of the facilities. Resuscitation bags and masks were available in four out of six facilities, with a predominant lack of masks of both sizes. Two CHCs in Chhatarpur did not have suction device. The average knowledge score amongst service providers in resuscitation was 76% and, in the remaining ENC domains, was 78%. The corresponding average skill scores were 24% and 34%, highlighting a huge contrast in knowledge and skill scores. This disparity was observed for all levels of providers assessed. While knowledge domain scores were largely satisfactory (> 75%) for the majority of providers in domains of kangaroo mother care and breastfeeding, the scores were only moderately satisfactory (50-75%) for all other knowledge domains. The skill scores for all domains were predominantly non-satisfactory (< 50%). The findings underpin the need for improving the existing ENC services by making newborn care comers functional and enhancing skills of service providers to reduce neonatal mortality rate in India.

Phenobarbitone versus phenytoin for treatment of neonatal seizures: an open-label randomized controlled trial.

OBJECTIVE: To compare the efficacy of phenobarbitone and phenytoin for treatment of neonatal seizures in term and near-term neonates. DESIGN: Open labeled randomized controlled trial. SETTING: Neonatal intensive care unit of a level II unit from India, from November 2008 to September 2009. PARTICIPANTS: All term and late pre-term neonates admitted with clinically apparent seizures and not having any transient metabolic disorders (hypoglycemia or hypocalcemia) were randomly assigned. INTERVENTION: Phenobarbitone (n=54) or phenytoin (n=55) intravenously 20 mg/kg/dose over 20-30 min. Neonates whose seizures were not controlled by the assigned drug were then crossed over to be treated with other drug in same dose. PRIMARY OUTCOME VARIABLE: Clinical control of seizures (seizure free period of 24 hours after giving anticonvulsant). RESULTS: Baseline characteristics including mean birthweight, gestation age and sex were comparable in both groups. Seizures were controlled in 8 of the 55 (14.5%) neonates who received phenytoin, as compared to 39 of 54 (72.2%) neonates who received phenobarbitone (P <0.001). In babies not responding to assigned drugs, after cross-over to the other drug, seizure control was achieved in 44/55 (80%) of the neonates assigned to receive phenytoin first as compared to 49/54 (91%) of those assigned to receive phenobarbitone first (P=0.014). After maximum dose of phenobarbitone seizures were controlled in 49/55(89%) in phenytoin group and 52/54 (96%) in phenobarbitone group (P<0.05). CONCLUSIONS: Phenobarbitone is more efficacious than phenytoin in control of clinical seizures in term or near-term neonates, irrespective of etiology. To evaluate serum vascular endothelial growth factor (VEGF) levels in children with acute lymphoblastic leukemia (ALL) during the induction phase of chemotherapy.

Rabies control initiative in Tamil Nadu, India: A test case for the 'One Health' approach.

Although India accounts for nearly 50% of the global rabies mortality, there is no organised national rabies control programme. Rabies control is generally confined to small urban pockets, with minimal intersectoral co-ordination. Tamil Nadu is the first state in India to implement a state-wide, multisectoral rabies control initiative. The CDC Program Evaluation Framework guided the current assessment of this rabies prevention and control initiative in Tamil Nadu. Principle stakeholders were engaged through a series of interviews in order to document policy initiatives, to describe the programme and to understand their various roles. Surveillance data on dog bites were triangulated with vaccine consumption and dog population data to identify trends at the district level in the state. Findings and recommendations were shared at different levels. Rabies control activities in Tamil Nadu were conducted by separate departments linked by similar objectives. In addition to public health surveillance, animal census and implementation of dog licensing rules, other targeted interventions included waste management, animal birth control and anti-rabies vaccination, awareness campaigns, and widespread availability of anti-rabies vaccine at all public health facilities. In conclusion, this assessment suggests that it is possible to implement a successful 'One Health' programme in an environment of strong political will, evidence-based policy innovations, clearly defined roles and responsibilities of agencies, co-ordination mechanisms at all levels, and a culture of open information exchange.