Browsing by Author "Ravi Ranjan"

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Bolstering Buck Fertility: The Impact of Asparagus racemosus Aqueous Extract on Semen Cryopreservation and Antioxidant Defense System
(Mary Ann Liebert Inc., 2025) Chetna Gangwar; Ashok Kumar; Kumaresan Gururaj; Anshuman Kumar; Salauddin D. Qureshi; Manish Kumar; Anil Kumar Mishra; Ravi Ranjan
Importance of Study: Semen cryopreservation results in sperm damage due to lipid peroxidation or oxidative stress, leading to a decrease in conception rate. The sperm damage during cryopreservation can be minimized with the use of suitable antioxidant supplements in semen diluent. Some herbs have potent antioxidant potential and can be used in semen diluent to protect the spermatozoa. Objective: Hence, the investigation was planned to evaluate the effect of Asparagus racemosus (A. racemosus) aqueous extract on buck semen quality during cryopreservation. Methodology: In the current study, semen was collected from eight Sirohi bucks, and from each buck, 8 ejaculates were collected. Good-quality semen samples were pooled during each collection. Pooled semen samples were then divided into four equal parts and diluted in TRIS buffer containing different concentrations of A. racemosus aqueous extract (different groups, i.e., G I −5 mg, G II −2.5 mg, G III −1.25 mg, and G IV −0 mg of A. racemosus aqueous extract in 1 mL TRIS buffer). All the diluted semen samples were kept at equilibration temperature (5°C) for 2 hours and then cryopreserved by the manual method. Semen samples were evaluated for various sperm characteristics and antioxidant status before and after cryopreservation. Results: Asparagus racemosus aqueous extract showed significant (p < 0.05) enhancement of sperm viability, sperm motility, acrosomal integrity, and plasma membrane integrity, whereas it reduced sperm abnormality. Furthermore, in the experimental groups, the antioxidant gene expression was found to be increased compared to that of the treatment group. G III (p < 0.05) showed significantly better results in terms of sperm viability, sperm motility, acrosomal integrity, and plasma membrane integrity. Conclusion: Asparagus racemosus aqueous extract has the antioxidant potential to protect buck spermatozoa during semen cryopreservation. © 2025, Mary Ann Liebert, Inc., publishers.
Growth and proliferation of caprine bone marrow mesenchymal stem cells on different culture media
(Elsevier Ltd, 2020) Dayanidhi Jena; Suresh Dinkar Kharche; Shiva Pratap Singh; Sonam Rani; Mahesh Shivanand Dige; Ravi Ranjan; Sanjay Kumar Singh; Harendra Kumar
The growth and proliferation of mesenchymal stem cells are very sensitive in in vitro and a number of factors like media play a significant role in that context. In this study we assessed effect of different media on growth and proliferation of bone marrow derived mesenchymal stem cells (BMMSCs). The BMMSCs were isolated from caprine bone marrow and were subjected to magnetic activated cell sorting against CD90+, CD105+, CD271+and CD34− along with FC blocker. After characterisation, 2 × 104 cells were seeded in 12 well culture plates in four different media viz. MesenCult, MesenPRO, StemPro and complete DMEM (15 % FBS) to study their growth kinetic for 6 days from passage 0 (P0) to passage 3 (P3). The population doubling time (PDT) was derived from growth curve using logarithmic formula. The results showed that the BMMSCs growth and proliferation was highest in MesenCult media in P0 which varied significantly (p < 0.05) from rest of media and from P1 to P3, it was MesenPRO which yielded maximum cells (p < 0.05). The PDT was also in line with growth curve findings. In conclusion, the MesenPRO media had higher growth and proliferation rate from P1 to P3 although MesenCult had higher cell numbers in P0. In conclusion, the use of MesenPRO media could be a better option than conventional media when mesenchymal stem cells are used in clinical applications and other therapeutic purposes taking consideration to its higher growth and proliferation rate. And MesenCult would be a great option to harvest MSCs from P0. © 2020 Elsevier Ltd
Spontaneous Lingual Bleeding and Intracerebral Hemorrhage in a Young Adult with Immune Thrombocytopenia (ITP): A Rare Case Report and Brief Recent Update on Treatment
(Bentham Science Publishers, 2025) Jitendra P. Singh; Anju Dinkar; Nilesh Kumar; Kailash Kumar; Ravi Ranjan; Isha Atam
Introduction: Immune thrombocytopenia (ITP) is an autoimmune condition characterized by reduced platelet counts due to increased peripheral destruction and impaired platelet generation. An estimated incidence of ITP is 2 to 5 cases per 100,000 individuals in the general population. While mucocutaneous bleeding is common, life-threatening complications, such as spontaneous lingual hematoma and intracerebral hemorrhage (ICH), are extremely rare. Rapid progression of lingual haematomas might compromise airway function and necessitate immediate medical intervention. It is well established that most patients with ITP respond to first-line therapy; however, severe bleeding events, such as intracerebral hemorrhage, occur in less than 1% of cases and are associated with significant morbidity and mortality. Case Presentation: A 21-year-old male with a 6-month history of chronic ITP and poor compliance with therapy presented with a 2-day history of progressive reddish discoloration and swelling of the tongue. The clinical examination revealed stable vital signs and a remarkable general and systemic evaluation. The relevant blood routine showed a critically low platelet count at 8×103/μL, with normal coagulation parameters. No other bleeding manifestations were noted. Four hours after admission, the patient developed generalized tonic-clonic seizures and altered sensorium. Computed tomography (CT) of the head revealed an ICH. He was managed with single-donor platelet transfusions, intravenous anti-epileptics, pulse corticosteroid therapy, eltrombopag, and supportive care. The patient demonstrated a favorable clinical response, characterized by a rising platelet count and resolution of symptoms. He was discharged in stable condition with counseling on therapy adherence. Conclusion: The present case emphasizes the rarely yet life-threatening complication of inadequately managed ITP, such as spontaneous lingual hematoma and intracranial haemorrhage. It highlights the vital significance of therapy adherence and timely interdisciplinary intervention to avert disastrous consequences. Timely detection and intervention are crucial for positive outcomes in these intricate cases. Bentham Science Publishers