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Tang B, Shang X, Qi H, Li J, Ma B, An G, Zhang Q. Metabonomic analysis of fatty acids in seminal plasma between healthy and asthenozoospermic men based on gas chromatography mass spectrometry. Andrologia 2017; 49. [PMID: 28124472 DOI: 10.1111/and.12744] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2016] [Indexed: 12/01/2022] Open
Affiliation(s)
- B. Tang
- School of Pharmaceutical Sciences; Nanjing Tech University; Nanjing China
- Department of Andrology; Jinling Hospital; Nanjing China
| | - X. Shang
- School of Pharmaceutical Sciences; Nanjing Tech University; Nanjing China
- Department of Andrology; Jinling Hospital; Nanjing China
| | - H. Qi
- School of Pharmaceutical Sciences; Nanjing Tech University; Nanjing China
- Department of Andrology; Jinling Hospital; Nanjing China
| | - J. Li
- School of Pharmaceutical Sciences; Nanjing Tech University; Nanjing China
- Department of Andrology; Jinling Hospital; Nanjing China
| | - B. Ma
- School of Pharmaceutical Sciences; Nanjing Tech University; Nanjing China
- Department of Andrology; Jinling Hospital; Nanjing China
| | - G. An
- College of Pharmacy; University of Iowa; Iowa City USA
| | - Q. Zhang
- School of Pharmaceutical Sciences; Nanjing Tech University; Nanjing China
- Department of Andrology; Jinling Hospital; Nanjing China
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Identification of biochemical differences between different forms of male infertility by nuclear magnetic resonance (NMR) spectroscopy. J Assist Reprod Genet 2014; 31:1195-204. [PMID: 24965760 DOI: 10.1007/s10815-014-0282-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 06/16/2014] [Indexed: 10/25/2022] Open
Abstract
PURPOSE The aim of this study was to analyze the seminal plasma of patients with idiopathic/male factor infertility and healthy controls with proven fertility by NMR spectroscopy, with a hope of establishing difference in biomarker profiles, if any, between the groups. METHODS A total of 103 subjects visiting the infertility clinic of Manipal University with normozoospermic parameters, oligozoospermia, asthenozoospermia, azoospermia and teratozoospermia were included. Semen characteristics were analysed by standard criteria. Seminal plasma was subjected to NMR spectroscopy at a 700 MHz (1)H frequency. The resultant data was analyzed by appropriate software. RESULTS The analysis revealed significant differences between the fertile control group and other forms of male infertility. Interestingly, seminal plasma profile of the idiopathic infertility group showed distinct segregation from the control population as well as other infertile groups. The difference in biomarker profiles between the idiopathic infertility and the rest of the groups combined could originate from either the up-regulation or down regulation of a several compounds, including lysine, arginine, tyrosine, citrate, proline and fructose. CONCLUSION Our data suggests the presence of a metabolic reason behind the origin of idiopathic infertility. (1)H NMR based metabonomic profiling based on concentration of biomarker lysine has the potential to aid in the detection and diagnosis of idiopathic infertility in an efficient manner.
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Thakur V, Choudhary M, Mehta V, Kumar D, Nitesh. RISUG: A new perspective in non–hormonal male contraception. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2013. [DOI: 10.1016/s2305-0500(13)60138-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Jha PK, Jha R, Gupta B, Guha SK. Effect of γ-dose rate and total dose interrelation on the polymeric hydrogel: A novel injectable male contraceptive. Radiat Phys Chem Oxf Engl 1993 2010. [DOI: 10.1016/j.radphyschem.2009.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jha RK, Jha PK, Guha SK. Smart RISUG: a potential new contraceptive and its magnetic field-mediated sperm interaction. Int J Nanomedicine 2009; 4:55-64. [PMID: 19421370 PMCID: PMC2720737 DOI: 10.2147/ijn.s4818] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The rationale and technique underlying a novel concept of noninvasive fertility control by a new Cuproferrogel contraceptive drug, iron oxide–copper–styrene maleic anhydride–dimethyl sulphoxide (Fe3O4–Cu–SMA–DMSO) composite named ‘Smart RISUG’ (smart reversible inhibition of sperm under guidance) in presence of pulsed magnetic field (PMF; 1 mT to 800 mT) is explained. It was synthesized by dispersing iron oxide particles and copper particles into SMA-DMSO (male contraceptive RISUG) and characterized for particle distribution, particle size measurement and transmittance peaks, etc. Interaction of the RISUG particles as well as Smart RISUG particles with Albino rat sperm cell was studied in presence as well as absence of PMF. To find an explanation to increased reaching of the Smart RISUG drug into sperm under influence of magnetic field, the transport properties were characterized by high resolution transmission electron microscopy and atomic force microscopy. Smart RISUG could be mobilized into sperm cell membrane at the PMF, 760 mT in about 50 seconds. Adoption of novel drug Smart RISUG involving new technique may open the pathway for non surgical control of drug distribution, detection and restoration of the normal fertility after removal of the contraceptive from the male/female reproductive tube in presence of electromagnetic field.
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Affiliation(s)
- Rakhi K Jha
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India
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Maher AD, Cloarec O, Patki P, Craggs M, Holmes E, Lindon JC, Nicholson JK. Dynamic biochemical information recovery in spontaneous human seminal fluid reactions via 1H NMR kinetic statistical total correlation spectroscopy. Anal Chem 2009; 81:288-95. [PMID: 19117456 DOI: 10.1021/ac801993m] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Human seminal fluid (HSF) is a complex mixture of reacting glandular metabolite and protein secretions that provides critical support functions in fertilization. We have employed 600-MHz (1)H NMR spectroscopy to compare and contrast the temporal biochemical and biophysical changes in HSF from infertile men with spinal cord injury compared to age-matched controls. We have developed new approaches to data analysis and visualization to facilitate the interpretation of the results, including the first application of the recently published K-STOCSY concept to a biofluid, enhancing the extraction of information on biochemically related metabolites and assignment of resonances from the major seminal protein, semenogelin. Principal components analysis was also applied to evaluate the extent to which macromolecules influence the overall variation in the metabolic data set. The K-STOCSY concept was utilized further to determine the relationships between reaction rates and metabolite levels, revealing that choline, N-acetylglucosamine, and uridine are associated with higher peptidase activity. The novel approach adopted here has the potential to capture dynamic information in any complex mixture of reacting chemicals including other biofluids or cell extracts.
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Affiliation(s)
- Anthony D Maher
- Department of Biomolecular Medicine, Division of Surgery, Oncology, Reproductive Biology and Anaesthetics (SORA), Faculty of Medicine, Imperial College London, South Kensington, SW7 2AZ, United Kingdom.
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Polyelectrolyte polymer properties in relation to male contraceptive RISUG® action. Colloids Surf B Biointerfaces 2009; 69:77-84. [DOI: 10.1016/j.colsurfb.2008.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Revised: 10/08/2008] [Accepted: 11/04/2008] [Indexed: 11/21/2022]
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Kumar S, Roy S, Chaudhury K, Sen P, Guha SK. Study of the micro-structural properties of RISUG--a newly developed male contraceptive. J Biomed Mater Res B Appl Biomater 2008; 86:154-61. [PMID: 18161821 DOI: 10.1002/jbm.b.31001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A new male contraceptive given the name RISUG (an acronym for reversible inhibition of sperm under guidance) and presently undergoing advanced clinical trials has been developed. When injected into the lumen of the vas deferens, its polyelectrolytic nature induces a surface charge imbalance on sperm membrane system leading to the leakage of enzymes essential for fertilization. Contact mode atomic force microscopy (AFM) has been used to analyze quantitatively the micro-structural properties of RISUG and its precipitate in various systems. Hydrolysis of the contraceptive gel resulted in the formation of pores of varying dimensions. RISUG being a highly charged molecule, as evident from zeta potential measurements, has a tendency to form a complex with ionic biomolecules present in the seminal plasma. This is supported by the experimental observations using AFM. This RISUG-biomolecule complex possibly acts as an ionic trap for spermatozoa passing through the vas deferens. Micro-structural properties of RISUG including amplitude (root mean square, peak-to-valley distance, skewness and kurtosis) and spatial roughness have been studied to understand its response to various physiological conditions. Significant alterations in the surface charge distribution of the sperm cell is observed on exposure to RISUG.
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Affiliation(s)
- Sunil Kumar
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, India
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Molecular approach of gossypol-induced reproductive toxicity in male rabbits. Changes in seminal plasma amino acids and fatty acids. Animal 2008; 2:1346-52. [PMID: 22443824 DOI: 10.1017/s1751731108002930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
This study was done to evaluate the effects of two sublethal doses of gossypol (4 and 20 mg/kg of BW, every other day) on some amino and fatty acid concentrations in male rabbit seminal plasma. Rabbits were chosen as an experimental animal owing to the fact that they are excellent model for reproductive toxicological effects. The experiment lasted 16 weeks and included two periods: a treatment period (first 8 weeks) where the animals were given the tested product, and a recovery period (second 8 weeks) where all drugs were withdrawn. Results showed that total amino acids (TAA), total essential amino acids (EAA), total non-essential amino acids (non-EAA) and EAA/non-EAA ratio were decreased in a dose-dependent manner during gossypol treatment. The deleterious effect on TAA concentrations was mainly due to the reduction in total EAA. However, these concentrations regained their normal values after gossypol cessation. Basic, acidic, neutral amino acids and basic/acidic amino acids ratio decreased in a dose-dependent manner by gossypol treatment. Additionally, gossypol administration caused decreases in total unsaturated fatty acids (USFA) and increases in total saturated fatty acids (SFA) and the SFA/USFA ratio in a dose-dependent manner. During the recovery period, total SFA and USFA showed significant reduction and significant increase, respectively, after gossypol withdrawal. In conclusion, gossypol administration affected rabbit seminal plasma concentrations of amino and fatty acids in a dose-dependant manner. Gossypol reduced TAA, total EAA and total non-EAA. Additionally, gossypol caused decreases in total USFA and increases in total SFA. These deleterious effects were associated with poor-quality semen observed in our previous studies.
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Kumar S, Roy S, Chaudhury K, Ghosh D, Guha SK. Biochemical and Ultrastructural Changes in Human Sperm Membrane System Associated with Polymeric Male Contraceptive-RISUG®. IFMBE PROCEEDINGS 2008:295-299. [DOI: 10.1007/978-3-540-69139-6_76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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Kumar S, Chaudhury K, Sen P, Guha SK. Quantitative analysis of surface micro-roughness alterations in human spermatozoa using atomic force microscopy. J Microsc 2007; 227:118-23. [PMID: 17845707 DOI: 10.1111/j.1365-2818.2007.01795.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new male contraceptive given the name RISUG (an acronym for Reversible Inhibition of Sperm Under Guidance) has been developed by our research group. RISUG is a bioactive polymer and is injected into the lumen of the vas deferens using a no-scalpel approach. The polyelectrolytic nature of this contraceptive induces a surface charge imbalance on sperm membrane system leading to its destabilization. Complete disintegration of the plasma membrane with subsequent rupture and dispersion of the acrosomal contents is observed on RISUG treatment. In the present study, micro-structural properties of human spermatozoa exposed to RISUG in vitro have been quantitatively analysed using atomic force microscopy. The parameters used to quantify these morphological changes include amplitude (peak-valley height difference, arithmetic roughness, root mean square roughness) and spatial roughness. Factor loadings (Varimax rotation) have been used to determine the parameters displaying maximum variation. Further, sperm cells have been classified in various principal-component planes using principal-component analysis. The periodic structural features of the atomic force microscopy images have also been obtained using power spectral analysis.
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Affiliation(s)
- Sunil Kumar
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721 302, India
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Kumar S, Chaudhury K, Sen P, Guha SK. Topological Analysis of a Polymer Based Contraceptive Using Atomic Force Microscopy. 3RD KUALA LUMPUR INTERNATIONAL CONFERENCE ON BIOMEDICAL ENGINEERING 2006 2007:156-159. [DOI: 10.1007/978-3-540-68017-8_40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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Kumar S, Chaudhury K, Sen P, Guha SK. Topological alterations in human spermatozoa associated with the polyelectrolytic effect of RISUG. Micron 2006; 37:526-32. [PMID: 16504524 DOI: 10.1016/j.micron.2006.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2005] [Revised: 01/11/2006] [Accepted: 01/12/2006] [Indexed: 10/25/2022]
Abstract
A new method of male contraception has been developed which results in long-term infertility and has the potential advantage of being reversible. The contraceptive, given the name RISUG (an acronym for Reversible Inhibition of Sperm Under Guidance) is a polyelectrolytic compound and when injected into the lumen of the vas deferens, induces a surface charge imbalance on the sperm membrane system leading to its destabilization. In the present study, morphological and topological alterations in human spermatozoa induced by RISUG have been investigated using atomic force microscopy (AFM). Complete disintegration of the plasma membrane with subsequent rupture and dispersion of the acrosomal contents is observed on treatment with RISUG in vitro. Considerable damage to the midpiece region with significant clustering of the mitochondria and its fusion with the head region is also observed. These observations are in agreement with the significant increase in the volume of RISUG-treated sperm-head region. Topological alterations in the flagellar and midpiece region of RISUG-treated spermatozoa have also been studied.
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Affiliation(s)
- Sunil Kumar
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
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Abstract
UNLABELLED Nonhormonal drugs for contraception in men may have advantages over hormonal methods. The nonhormonal methods can have more rapid onset and less interference with androgen-dependent functions. This systematic review summarizes the clinical studies evaluating nonhormonal drugs administered to men for contraception. Relevant clinical results were found for gossypol, which is derived from the cotton plant, and for extracts of Tripterygium, a plant used in Chinese traditional medicine. Randomized, controlled trials were available on the efficacy of gossypol and on the effect of gossypol on potassium levels. Gossypol had problems with low efficacy and toxicity. For Tripterygium, 2 observational studies described men who were treated for rheumatoid arthritis. Although sperm density was lower among those taking Tripterygium, later reports indicated some toxicity. Nonclinical research continues on isolates of Tripterygium. No clinical studies for contraception in men were found for nonhormonal vaccines or neem, which is also a plant used for medicinal purposes. Clinical trials studied injecting styrene maleic anhydride into the vas deferens, but no comparative data were provided. At this time, no safe and effective nonhormonal drug is available for contraception in men. TARGET AUDIENCE Obstetricians & Gynecologists, Family Physicians. LEARNING OBJECTIVES After completion of this article, the reader should be able to state that the number of studies concerning the use of nonhormonal drugs for male contraception are very limited, point out that the two nonhormonal drugs used to a small degree have varying results and serious side effects, and recall that there are limited clinical studies on use of vas deferens injections and vaccines in humans.
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Affiliation(s)
- Laureen M Lopez
- Family Health International, Research Triangle Park, North Carolina 27709, USA.
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Chaudhury K, Bhattacharyya AK, Guha SK. Studies on the membrane integrity of human sperm treated with a new injectable male contraceptive. Hum Reprod 2004; 19:1826-30. [PMID: 15192063 DOI: 10.1093/humrep/deh332] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate the integrity of sperm surface characteristics in the presence of a new male contraceptive, RISUG [1 mg styrene maleic anhydride (SMA)/100 microl dimethylsulphoxide (DMSO) in 1 ml sperm solution]. METHODS Progressively motile human sperm were treated in vitro with RISUG. The cells were analysed for the release of 5'-nucleotidase (5'-NT) (a plasma membrane marker) using 3 mmol/l 5'-AMP and 3 mmol/l beta-glycerophosphate as substrates. Hyaluronidase (an acrosomal membrane marker) was analysed using hyaluronic acid as a substrate. The contents of free and total acrosin, and % proacrosin (all acrosome markers) were assayed using 0.5 mmol/l alpha-N-benzoyl-L-arginine ethylester (BAEE). RESULTS RISUG caused almost complete disintegration of the plasma membrane leading to significant (P < 0.0001) release of 5'-NT into the surrounding media. Complete dissolution of the acrosome with concomitant vesiculation of the membrane system, as judged from the loss of hyaluronidase, was observed. Total acrosin content in the sperm was also reduced to almost 10%, and proacrosin dropped to 13.2% in the presence of RISUG in comparison to 90.2% in control (P < 0.0001), indicating dispersion of acrosomal contents. CONCLUSION Under in vitro conditions, RISUG, at a concentration of 1 mg SMA dissolved in 100 microl of DMSO, caused significant damage to the acrosome and its contents, indicating loss of functional ability of sperm.
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Affiliation(s)
- K Chaudhury
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, India
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