1.Emerging Treatment Options of Regenerative Medicine in Severe Corona Virus/COVID 19 Infections
Ashok KUMAR ; Sharda Brata GHOSH
International Journal of Stem Cells 2020;13(3):305-311
COVID-19 pandemic has brought the whole world stand still, locked down in their homes, infecting more than 8 million people, and many thousands (449,182) -have lost their lives across the globe. Due to lack of any definitive medicine or vaccine, treatment options are supportive of oxygenation, antiviral, antiretroviral drugs, antibiotics, fluid/electrolyte, mechanical ventilation with ICU (Intensive Care Unit) support, and hloroquine/hydroxychloroquine have been tried to fight this infection. However, mortality due to severe pneumonia, ARDS (Acute Respiratory Distress Syndrome), and multiorgan failure arising from the overactive immune response (storm) mediated by cytokines remains a treatment challenge in elderly and patients with severe medical comorbidities. Recently, anti-inflammatory, angiogenic, immune-modular, and healing properties of intravenous injections of culture derived stem cells have been proposed and shown to benefits in a small number of patients with severe COVID-19 infections. Based on previous experience with other viral infections, convalescent plasma, and serum transfusion are being used as a source of neutralizing antibody/factors to minimize the effects of inflammatory cytokines in this infection. Immunotherapy with purified monoclonal antibodies and conditioned serum with a mixture of unique cytokines are also being developed. Regenerative Medicine has emerged as a crucial adjuvant tool in promoting healing and early recovery in severe COVID-19 infections and other supportive treatments.
2.Chronic fistula in ano associated with adenocarcinoma: a case report with a review of the literature
Nalini Kanta GHOSH ; Ashok KUMAR
Annals of Coloproctology 2024;40(Suppl 1):S1-S5
The malignant transformation of chronic fistula in ano is rare, accounting for 3% to 11% of all anal canal malignancies. It results from long-standing inflammation and chronic irritation. No guidelines are available for the management of these cases. We herein present a case report of a 55-year-old man who presented with a history of constipation, perianal pain, and discharging fistula in ano of 4-year duration and underwent fistula surgery with recurrence. Biopsy of the fistulous tract revealed adenocarcinoma. He received neoadjuvant chemoradiotherapy, followed by abdominoperineal excision including excision of the fistulous tract. After 18 months of follow-up, he is free of recurrence. We present this case with a review of the literature, highlighting the management strategies.
3.Endosulfan induces reproductive & genotoxic effect in male and female Swiss albino mice
Priya ; Arun KUMAR ; Mohammad ALI ; Abhinav SRIVASTAVA ; Ranjit KUMAR ; Ashok Kumar GHOSH
Laboratory Animal Research 2024;40(2):223-232
Background:
Toxicity by pesticide has become a global health issue and leaves a harmful impact on human health via various ways. The people exposed to pesticides in the rural population get affected by the harmful effects of it as they enter the human body system through skin, inhalation, oral administration, food chain and many more ways. The present work is designed to study the toxic effect of endosulfan in male (n=30) and female (n=30) Swiss albino mice. Endosulfan was administered by oral gavage (oral administration) method, at the dose of 3.5 mg/Kg body weight daily for period of 3 weeks, 5 weeks and 7 weeks. After the completion of the treatment, the mice were sacrificed and their ovary and testis tissues were dissected out to check the degeneration. The blood was collected for karyotyping, biochemical and hormonal analysis of pesticide induced genotoxicity. After 7 weeks of administration with Endosulfan, various abnormalities were observed in male and female mice.
Results:
Treatment with endosulfan at the dose of 3.5 mg/Kg body weight caused a higher degree of degeneration in the reproductive organ of Swiss albino mice . Treatment by this pesticide generated degeneration in long duration of dosage for 3,5 and 7 weeks. Ovaries of endosulfan administered groups showed degenerated germinal epithelium, Graffian follicles and corpus luteum. In testis of endosulfan treated mice, microscopic examination showed that there is significant damage and reduction in the tissue of seminiferous tubules and primordial germ cells. High degree of degeneration caused the disarrangement and deformation of spermatogonia with the decrease in the number of Sertoli cells. Biochemical and hormonal properties was also affected by endosulfan treatment. There was significant 5 folds decrease in the testosterone value of endosulfan in 7 weeks treated mice in comparison to control (p < 0.0001) and similarly there was significant elevation in the estrogen levels found in 7th week endosulfan treated mice. It also influenced the level of free radicals as there was significant decrease (p < 0.0001) in the value in catalase levels in 7 weeks endosulfan treated male and female mice, while significant (p < 0.0001) increase in the values of lipid peroxidation levels as 8 folds and 10 folds in 7 weeks endosulfan treated male and female Swiss albino mice respectively. This study hence speculates that the endosulfan exposed population are at the risk of reproductive health hazards.
Conclusions
The present study thus concludes that, endosulfan after 7 weeks of exposure caused significant reproductive damage to both male and female Swiss albino mice groups. Moreover, the karyotyping study also correlated the genotoxic damage in the mice.