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V Mittal

Publications and source records attributed to V Mittal.

45 records · Page 3Linked to original sources
PubMed1986

Effect of fatty acids on aflatoxin production by Aspergillus parasiticus.

The effect of saturated and unsaturated fatty acids on aflatoxin production was studied in a synthetic medium. The aflatoxin production decreased (10-75%) in the presence of lauric acid and palmitic acid but the addition of behenic and sebacic acid stimulated aflatoxin production by 125-541%. Linolenic and linoleic acids effected aflatoxin production and mycelium growth. An 34-fold increase in aflatoxin production was observed with 50 mM linoleic acid. An inverse relationship was observed between aflatoxin production and mycelium mass, irrespective of the nature of the fatty acid.

Aflatoxins↗
PubMed1986

Effect of metal ions on aflatoxin production by Aspergillus parasiticus.

The effect of iron, copper, cobalt, cadmium, zinc, molybdenum, magnesium and manganese salts was studied on aflatoxin production in relation to mycelial mass. Iron, copper and cadmium salts decreased the aflatoxin production to different levels but a mixed trend was observed depending on salt concentration, with molybdenum, magnesium and manganese. Cobalt and zinc salts stimulated aflatoxin production at all concentrations studied. The maximum increase in aflatoxin production, 655% and 519% was observed in the presence of zinc sulfate and sodium molybdate, respectively. A negative correlation was observed between aflatoxin production and vegetative growth of fungus.

Aflatoxins↗
PubMedDate not supplied

Pre-operative ultrasonography guiding minimal, selective surgical approach in primary hyperparathyroidism.

BACKGROUND: The traditional surgical approach for the treatment of primary hyperparathyroidism (HPT) has been routine bilateral surgical exploration. Our aim was to evaluate pre-operative ultrasonography (U/S) in altering our practice to selective unilateral neck exploration. PATIENTS AND METHODS: A retrospective study was conducted involving 53 patients who had parathyroidectomy over a 5-year period (1989-1994), 41 of whom with the diagnosis of HPT had pre-operative neck U/S. RESULTS: Thirty-eight patients had a single adenoma, one had parathyroid cancer, and two had multiple adenomas. Thirty-six of 41 (88%) patients were true positives, two (5%) false positives, two (5%) false negatives and one (2%) was true negative. Based on the surgeon's personal preference and U/S results, 21/41 (51%) of patients had bilateral and 20/41 (49%) had unilateral neck exploration. All the 41 patients had resolution of the hypercalcemia postoperatively. Eighteen of 38 (47%) patients with a single adenoma had bilateral neck exploration and only in two patients was this necessary. CONCLUSIONS: Patients undergoing parathyroid surgery for HPT should have preoperative U/S and, if a single enlarged parathyroid gland is found, unilateral U/S guided neck exploration is safe and economical. In all the other patients, bilateral exploration is the preferred approach.

Adenoma↗
PubMedDate not supplied

Dengue fever with acute liver failure.

A virus belonging to the Flaviviridae group causes dengue haemorrhagic fever. Dengue presenting as acute liver failure is rare. Dengue is endemic in India. The last epidemic of dengue occurred in Delhi in 2003. During this epidemic, 2185 confirmed cases of dengue were reported. Dengue virus serotypes 2 and 3 were responsible for this epidemic. A 19-yr-old male presented to our hospital with the complaints of fever for 12 days, during this epidemic. He was diagnosed as having dengue shock syndrome, stage IV with acute liver failure. He had primary dengue infection. He made complete recovery with supportive management.

Adult↗