Whole Genome Sequencing and Pan-Genomic Analysis of Multidrug-Resistant Vibrio cholerae VC01 Isolated from a Clinical Sample

Cholera, a disease caused by the Vibrio cholerae bacteria, threatens public health worldwide. The organism mentioned above has a significant historical record of being identified as a prominent aquatic environmental pollutant capable of adapting its phenotypic and genotypic traits to react to host patients effectively. This study aims to elucidate the heterogeneity of the sporadic clinical strain of V. cholerae VC01 among patients residing in Silvasa. The study involved conducting whole-genome sequencing of the isolate obtained from patients exhibiting symptoms, including those not commonly observed in clinical practice. The strain was initially identified through a combination of biochemical analysis, microscopy, and 16s rRNA-based identification, followed by type strain-based identification. The investigation demonstrated the existence of various genetic alterations and resistance profiles against multiple drugs, particularly chloramphenicol (catB9), florfenicol (floR), oxytetracycline (tet(34)), sulfonamide (sul2), and Trimethoprim (dfrA1). The pan-genomic analysis indicated that 1099 distinct clusters were detected within the genome sequences of recent isolates worldwide. The present study helps to establish a correlation between the mutation and the coexistence of antimicrobial resistance toward current treatment.

Comparative homology model building and docking evaluation for RNA III inhibiting peptide of Multi drug resistant Staphylococcus aureus strain MRSA252

Since last several years, infection caused by Staphylococcus aureus is challenging to cure using conventional antibiotics. The organism is a Gram-positive bacterial pathogen that can cause serious diseases not only in humans but also in animals, such as various skin infections, pneumonia, endocarditis and toxin shock syndrome. This bacterium causes such diseases by producing macromolecules such as hemolysins, enterotoxins, proteases and toxic shock syndrome toxin (TSST-1). This organism had developed the multidrug resistance by acquiring MEC-A gene. This account for made organism to come into the category of Superbug. Several studies showed that, the toxin production is induced by AIP and RAP via the phosphorylation of TRAP. TRAP is a 21 kDa protein and was believed to be associated with the membrane via SvrA Phosphoamino acid analysis revealed that TRAP is histidine phosphorylated in a signal transduction pathway that is activated by RAP. The inhibition of TRAP could be done by RIP (RNAIII-inhibiting peptide). The structure for RIP is still undiscovered to be used as inhibitor. Present work has been carried out to get the structural insight with various online and offline homology modeling techniques such as SWISS-MODEL, MODBASE, GENO3D, CPHmodels and I-TASSER for getting unknown structural information target of RNAIII-activating protein from Staphylococcus aureus strain MRSA252 origin for their future exploration as a target in drug discovery process against MRSA.

Bacterial tag encoded FLX titanium amplicon pyrosequencing (bTEFAP) based assessment of prokaryotic diversity in metagenome of Lonar soda lake, India

Bacterial diversity and archaeal diversity in metagenome of the Lonar soda lake sediment were assessed by bacterial tag-encoded FLX amplicon pyrosequencing (bTEFAP). Metagenome comprised 5093 sequences with 2,531,282 bp and 53 ± 2% G + C content. Metagenome sequence data are available at NCBI under the Bioproject database with accession no. PRJNA218849. Metagenome sequence represented the presence of 83.1% bacterial and 10.5% archaeal origin. A total of 14 different bacteria demonstrating 57 species were recorded with dominating species like Coxiella burnetii (17%), Fibrobacter intestinalis (12%) and Candidatus Cloacamonas acidaminovorans (11%). Occurrence of two archaeal phyla representing 24 species, among them Methanosaeta harundinacea (35%), Methanoculleus chikugoensis (12%) and Methanolinea tarda (11%) were dominating species. Significant presence of 11% sequences as an unclassified indicated the possibilities for unknown novel prokaryotes from the metagenome.

Gastric aspirate shake test for diagnosis of surfactant deficiency in neonates with respiratory distress

The gastric aspirate shake test (GST) was evaluated in 77 newborns with respiratory distress for predicting hyaline membrane disease (HMD) at KEM Hospital, Pune, India.

METHODS

Over 0.5 ml of gastric fluid was obtained within 30 min of birth and mixed with an equal volume of normal saline for 10 sec; 1 ml of 95% ethanol was then added and the mixture agitated for 10 sec. After standing for 15 min, the air-liquid interface was examined for bubbles.

RESULTS

All 21 infants with a negative GST developed HMD. However, 12 infants with an intermediate and nine with a positive test also developed HMD. None of the infants with other respiratory disorders, e.g. transient tachypnoea and pneumonia, had a negative GST. A negative GST had a specificity of 100%, sensitivity of 70% and positive predictive value of 100% for developing HMD.

CONCLUSION

GST is a useful test for predicting HMD and might be of particular value in developing countries.

Processing and intracellular localization of the herpes simplex virus type 1 proteinase

The herpes simplex virus type 1 (HSV-1) capsid protein VP24 (encoded by UL26) was expressed as a GST-fusion protein and used to prepare a group of monoclonal antibodies. These were used to characterize the protein in capsids and virus infected cells and demonstrated that it exists as two polypeptide species. The nature of the relationship between these two species was investigated and found to be associated with disulphide bonding. Under non-reducing conditions a species corresponding to dimers of VP24 was identified in preparations of B capsids, the site of action of the proteinase. Biochemical subcellular fractionation studies suggested that only cleaved forms of UL26 and UL26.5 gene products could be detected in the nucleus of the infected cell at early times post-infection.

A simplified and efficient synthesis of 5,10-dideaza-5,6,7,8-tetrahydrofolic acid (DDATHF)

A new and extremely efficient synthesis of DDATHF from 4-vinylbenzoic acid and bromomalondialdehyde as precursors has been developed which proceeds in 48% overall yield.

Unilateral renal hypoplasia as an incidental finding in a patient with a ruptured heel cord

A report of unilateral renal hypoplasia in an 11-year-old patient, admitted to the hospital for surgical repair of a ruptured Achilles tendon, is presented. The condition was incidentally discovered because of an elevated blood pressure level. The case demonstrates that screening for hypertension, even in the pediatric population, should be an essential part of the routine podiatric physical examination.

Methods of Analysis for Infant Formula: Food and Drug Administration and Infant Formula Council Collaborative Study, Phase III

Phase III of the collaborative study of methods of assay for nutrients in infant formulas was conducted. The study included assay of chloride, phosphorus, proxiraates (ash, fat, protein, total solids, and carbohydrates), thiamine, total pantothenates, and vitamins A, Bu, and E. Most of the methods were those in Official Methods of Analysis, 13th edition, with slight modifications, or methods of the Infant Formula Council. On the basis of the results obtained by the collaborators, the methods for chloride, phosphorus, proximates, thiamine, and vitamin Bu have been adopted official first action. Methods for total pantothenates, vitamin A, and vitamin E were not recommended for adoption at this time because of anticipated improvements in methodology in the foreseeable future.