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Author

  • Pratap Kumar Narayan
2011

Controlled cooling versus rapid freezing of teratozoospermic semen samples: Impact on sperm chromatin integrity

Kalludi, S. N., Kalthur, G., Benjamin, S., Kumar, P. & Adiga, S., 09-2011, In : Journal of Human Reproductive Sciences. 4, 3, p. 121-124 4 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Ejaculate fractions of asthenozoospermic and teratozoospermic patients have differences in the sperm DNA integrity

Kumar, D., Kalthur, G., Mascarenhas, C., Kumar, P. & Adiga, S. K., 12-2011, In : Andrologia. 43, 6, p. 416-421 6 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Luteinizing hormone and its dilemma in ovulation induction

Kumar, P. & Sait, S., 01-01-2011, In : Journal of Human Reproductive Sciences. 4, 1, p. 2-7 6 p.

Research output: Contribution to journalReview article

34 Citations (Scopus)

Ovarian hyperstimulation syndrome

Kumar, P., Sait, S. F., Sharma, A. & Kumar, M., 2011, In : Journal of Human Reproductive Sciences. 4, 2, p. 70-75 6 p.

Research output: Contribution to journalArticle

81 Citations (Scopus)

Vitamin E supplementation in semen-freezing medium improves the motility and protects sperm from freeze-thaw-induced DNA damage

Kalthur, G., Raj, S., Thiyagarajan, A., Kumar, S., Kumar, P. & Adiga, S. K., 01-03-2011, In : Fertility and Sterility. 95, 3, p. 1149-1151 3 p.

Research output: Contribution to journalArticle

62 Citations (Scopus)

yüzdürme ve dansite gradient ayi{dotless}rma metotlari{dotless}ni{dotless}n kombinasyonu DNA hasarli{dotless} spermleri etkili bir şekilde uzaklaşti{dotless}ri{dotless}r

Translated title of the contribution: Combination of swim-up and density gradient separation methods effectively eliminate DNA damaged spermGhumman, S., Adiga, S. K., Upadhya, D., Kalthur, G., Jayaraman, V., Rao, S. B. & Kumar, P., 2011, In : Journal of the Turkish German Gynecology Association. 12, 3, p. 148-152 5 p.

Research output: Contribution to journalArticle

2012

Addition of zinc to human ejaculate prior to cryopreservation prevents freeze-thaw-induced DNA damage and preserves sperm function

Kotdawala, A. P., Kumar, S., Salian, S. R., Thankachan, P., Govindraj, K., Kumar, P., Kalthur, G. & Adiga, S. K., 12-2012, In : Journal of Assisted Reproduction and Genetics. 29, 12, p. 1447-1453 7 p.

Research output: Contribution to journalArticle

29 Citations (Scopus)
1 Citation (Scopus)

Association of low maternal plasma glucose after oral glucose challenge test with small for gestational age neonate

Bhat, R. G., Bhagya, K. V. & Kumar, P., 01-01-2012, In : International Journal of Infertility and Fetal Medicine. 3, 1, p. 22-25 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Effects of metformin use in pregnant patients with polycystic ovary syndrome

Khan, K. & Kumar, P., 01-05-2012, In : Journal of Human Reproductive Sciences. 5, 2, p. 166-169 4 p.

Research output: Contribution to journalReview article

13 Citations (Scopus)

Endometrioma cyst: To remove or not?

Kumar, P. & Balasubramanian, A., 01-01-2012, In : International Journal of Infertility and Fetal Medicine. 3, 1, p. 26-29 4 p.

Research output: Contribution to journalReview article

1 Citation (Scopus)
8 Citations (Scopus)

Germ cell abnormalities in streptozotocin induced diabetic mice do not correlate with blood glucose level

Bose, R., Adiga, S. K., D'Souza, F., Salian, S. R., Uppangala, S., Kalthur, G., Jain, N., Radhakrishnan, R. A., Bhat, N., Krishnamurthy, H. & Kumar, P., 12-2012, In : Journal of Assisted Reproduction and Genetics. 29, 12, p. 1405-1413 9 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Poor sperm quality and advancing age are associated with increased sperm DNA damage in infertile men

Varshini, J., Srinag, B. S., Kalthur, G., Krishnamurthy, H., Kumar, P., Rao, S. B. S. & Adiga, S. K., 05-2012, In : Andrologia. 44, SUPPL.1, p. 642-649 8 p.

Research output: Contribution to journalArticle

43 Citations (Scopus)
55 Citations (Scopus)

Supplementation of biotin to sperm preparation medium increases the motility and longevity in cryopreserved human spermatozoa

Kalthur, G., Salian, S. R., Keyvanifard, F., Sreedharan, S., Thomas, J. S., Kumar, P. & Adiga, S. K., 07-2012, In : Journal of Assisted Reproduction and Genetics. 29, 7, p. 631-635 5 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)
9 Citations (Scopus)

Understanding implantation window, a crucial phenomenon

Sharma, A. & Kumar, P., 01-01-2012, In : Journal of Human Reproductive Sciences. 5, 1, p. 2-6 5 p.

Research output: Contribution to journalReview article

29 Citations (Scopus)
2014

Association between sperm DNA integrity and seminal plasma antioxidant levels in health workers occupationally exposed to ionizing radiation

Kumar, D., Salian, S. R., Kalthur, G., Uppangala, S., Kumari, S., Challapalli, S., Chandraguthi, S. G., Jain, N., Krishnamurthy, H., Kumar, P. & Adiga, S. K., 2014, In : Environmental Research. 132, p. 297-304 8 p.

Research output: Contribution to journalArticle

18 Citations (Scopus)
7 Citations (Scopus)

Identification of biochemical differences between different forms of male infertility by nuclear magnetic resonance (NMR) spectroscopy

Jayaraman, V., Ghosh, S., Sengupta, A., Srivastava, S., Sonawat, H. M. & Narayan, P. K., 01-01-2014, In : Journal of Assisted Reproduction and Genetics. 31, 9, p. 1195-1204 10 p.

Research output: Contribution to journalArticle

28 Citations (Scopus)
7 Citations (Scopus)

Laparoscopic cystectomy of endometrioma: Good surgical technique does not adversely affect ovarian reserve

Bhat, R. G., Dhulked, S., Ramachandran, A., Bhaktha, R., Vasudeva, A., Kumar, P. & Rao, A. C. K., 01-01-2014, In : Journal of Human Reproductive Sciences. 7, 2, p. 125-129 5 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Laser-assisted hatching of cleavage-stage embryos impairs developmental potential and increases DNA damage in blastocysts

Honguntikar, S. D., Uppangala, S., Salian, S. R., Kalthur, G., Kumar, P. & Adiga, S. K., 2014, In : Lasers in Medical Science. 30, 1, p. 95-101 7 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Orlistat in polycystic ovarian syndrome reduces weight with improvement in lipid profile and pregnancy rates

Kumar, P. & Arora, S., 01-01-2014, In : Journal of Human Reproductive Sciences. 7, 4, p. 255-261 7 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Quantifying Proteinuria in Hypertensive Disorders of Pregnancy

Amin, S. V., Illipilla, S., Hebbar, S., Rai, L., Kumar, P. & Pai, M. V., 01-01-2014, In : International Journal of Hypertension. 2014, 941408.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2015
2 Citations (Scopus)
20 Citations (Scopus)
2 Citations (Scopus)
5 Citations (Scopus)

Individualizing ovarian stimulation protocols in ART

Kumar, P., 22-09-2015, Principles and Practice of Controlled Ovarian Stimulation in ART. Springer India, p. 138-145 8 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Manipal cervical scoring system by transvaginal ultrasound in predicting successful labour induction

Bajpai, N., Bhakta, R., Kumar, P., Rai, L. & Hebbar, S., 01-05-2015, In : Journal of Clinical and Diagnostic Research. 9, 5, p. QC04-QC09

Research output: Contribution to journalArticle

7 Citations (Scopus)

New insights into infertility associated with polycystic ovarian syndrome

Pai, P. J., Sahoo, P. & Kumar, P., 01-08-2015, In : International Journal of Infertility and Fetal Medicine. 6, 2, p. 43-50 8 p.

Research output: Contribution to journalReview article

3 Citations (Scopus)

Prevalence of musculoskeletal dysfunctions among Indian pregnant women

Ramachandra, P., Maiya, A. G., Kumar, P. & Kamath, A., 06-01-2015, In : Journal of Pregnancy. 2015, 437105.

Research output: Contribution to journalArticle

18 Citations (Scopus)
2016

Congenital Mitral atresia: A rare anomaly diagnosed in fetal echocardiography: A case study

Krishnananda, N., Ranjan Shetty, K., Kumar, P., Shetty, K., Prabhu, S. & Jyothi, S., 01-09-2016, In : Research Journal of Pharmaceutical, Biological and Chemical Sciences. 7, 5, p. 1936-1939 4 p.

Research output: Contribution to journalArticle

Distress in infertile males in Manipal-India: A clinic based study

Patel, A., Sharma, P. S. V. N., Narayan, P., Nair, B. V. S., Narayanakurup, D. & Pai, P. J., 01-10-2016, In : Journal of Reproduction and Infertility. 17, 4, p. 213-220 8 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Endometrial osseous metaplasia

Shivamurthy, A., Jaiprakash, P., Nishith, N., Pai, P. J. & Kumar, P., 01-09-2016, In : Research Journal of Pharmaceutical, Biological and Chemical Sciences. 7, 5, p. 1237-1240 4 p.

Research output: Contribution to journalArticle

Evaluation of fetal echocardiography as a routine antenatal screening tool for detection of congenital heart disease

Nayak, K., Naveen Chandra, G. S., Shetty, R. & Narayan, P. K., 01-01-2016, In : Cardiovascular Diagnosis and Therapy. 6, 1, p. 44-49 6 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)
8 Citations (Scopus)

Influence of sperm DNA damage on human preimplantation embryo metabolism

Uppangala, S., Pudakalakatti, S., D'souza, F., Salian, S. R., Kalthur, G., Kumar, P., Atreya, H. & Adiga, S. K., 01-09-2016, In : Reproductive biology. 16, 3, p. 234-241 8 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)
21 Citations (Scopus)