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  1. Fulltext Metallic foreign body penetrating the carotid sheath: a case report
    Vamanshankar H, Nair AB, Rajan N
    Malays J Med Sci, 2011 Jan;18(1):72-5.
    PMID: 22135577
    Foreign bodies are a common problem seen in otolaryngological practice. Of the reported foreign bodies, metallic foreign bodies are a rare entity. One of the least common complications of foreign body ingestion is penetration and migration. We describe a case of a migrating metallic foreign body in a 50-year-old woman with a history of accidental ingestion causing odynophagia. In the present case, the foreign body migrated extraluminally into the carotid sheath. Our review of literature revealed that few such cases have been reported.
  2. Fulltext A case of isolated laryngeal candidiasis mimicking laryngeal carcinoma in an immunocompetent individual
    Nair AB, Chaturvedi J, Venkatasubbareddy MB, Correa M, Rajan N, Sawkar A
    Malays J Med Sci, 2011 Jul;18(3):75-8.
    PMID: 22135605
    Respiratory fungal infections are usually found in immunocompromised individuals who have received either long-term steroid therapy or broad-spectrum anti-microbial therapy or have a non-resolving underlying chronic disease. These infections are seen as a part of bronchopulmonary fungal infections, and their isolated and primary occurrence as laryngeal diseases is highly uncommon. Laryngeal fungal infections can also mimic various diseases, such as gastroesophageal reflux disease, granulomatous diseases, leukoplakia, and carcinoma, thereby misleading the treating team from correct diagnosis and management. It is therefore important to identify the lesion at the earliest point possible to avoid morbid or life-threatening consequences. We report a case of isolated laryngeal candidiasis in an immunocompetent Indian male with an unusual presentation mimicking laryngeal carcinoma. The clinical and histological features are highlighted with a review of relevant literature to demonstrate the possibility of such an isolated fungal lesion, even in an immunocompetent individual.
  3. Optimizing hybrid vigor: a comprehensive analysis of genetic distance and heterosis in eggplant landraces
    Rajan N, Debnath S, Perveen K, Khan F, Pandey B, Srivastava A, et al.
    Front Plant Sci, 2023;14:1238870.
    PMID: 37719210 DOI: 10.3389/fpls.2023.1238870
    INTRODUCTION: This study explored the molecular characterization of 14 eggplant (brinjal) genotypes to evaluate their genetic diversity and the impact of heterosis. As eggplant is a vital horticultural crop with substantial economic and nutritional value, a comprehensive understanding of its genetic makeup and heterosis effects is essential for effective breeding strategies. Our aim was not only to dissect the genetic diversity among these genotypes but also to determine how genetic distance impacts heterotic patterns, which could ultimately help improve hybrid breeding programs.

    METHODS: Genetic diversity was assessed using 20 SSR markers, and the parental lines were grouped into five clusters based on the Unweighted Pair Group Method of Arithmetic Means (UPGMA). Heterosis was examined through yield and yield-related traits among parents and hybrids.

    RESULTS: Polymorphisms were detected in eight out of the twenty SSR markers across the parental lines. Notably, a high genetic distance was observed between some parents. The analysis of yield and yield-related traits demonstrated significant heterosis over mid, superior, and standard parents, particularly in fruit yield per plant. Two crosses (RKML-26 X PPC and RKML1 X PPC) displayed substantial heterosis over mid and better parents, respectively. However, the positive correlation between genetic distance and heterosis was only up to a certain threshold; moderate genetic distance often resulted in higher heterosis compared to very high genetic distance.

    DISCUSSION: These findings emphasize the critical role of parental selection in hybrid breeding programs. The results contribute to the understanding of the relationship between genetic distance and heterosis, and it is suggested that future research should delve into the genetic mechanisms that drive heterosis and the effect of genetic distance variance on heterosis. The insights drawn from this study can be harnessed to enhance crop yield and economic value in breeding programs.

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