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Pandey AN, Yadav PK, Premkumar KV, Tiwari M, Pandey AK, Chaube SK. Reactive oxygen species signalling in the deterioration of quality of mammalian oocytes cultured in vitro: Protective effect of antioxidants. Cell Signal 2024; 117:111103. [PMID: 38367792 DOI: 10.1016/j.cellsig.2024.111103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 02/19/2024]
Abstract
The in vitro fertilization (IVF) is the first choice of infertile couples worldwide to plan for conception. Besides having a significant advancement in IVF procedure, the success rate is still poor. Although several approaches have been tested to improve IVF protocol, minor changes in culture conditions, physical factors and/or drug treatment generate reactive oxygen species (ROS) in oocytes. Due to large size and huge number of mitochondria, oocyte is more susceptible towards ROS-mediated signalling under in vitro culture conditions. Elevation of ROS levels destabilize maturation promoting factor (MPF) that results in meiotic exit from diplotene as well as metaphase-II (M-II) arrest in vitro. Once meiotic exit occurs, these oocytes get further arrested at metaphase-I (M-I) stage or metaphase-III (M-III)-like stage under in vitro culture conditions. The M-I as well as M-III arrested oocytes are not fit for fertilization and limits IVF outcome. Further, the generation of excess levels of ROS cause oxidative stress (OS) that initiate downstream signalling to initiate various death pathways such as apoptosis, autophagy, necroptosis and deteriorates oocyte quality under in vitro culture conditions. The increase of cellular enzymatic antioxidants and/or supplementation of exogenous antioxidants in culture medium protect ROS-induced deterioration of oocyte quality in vitro. Although a growing body of evidence suggests the ROS and OS-mediated deterioration of oocyte quality in vitro, their downstream signalling and related mechanisms remain poorly understood. Hence, this review article summarizes the existing evidences concerning ROS and OS-mediated downstream signalling during deterioration of oocyte quality in vitro. The use of various antioxidants against ROS and OS-mediated impairment of oocyte quality in vitro has also been explored in order to increase the success rate of IVF during assisted reproductive health management.
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Affiliation(s)
- Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Karuppanan V Premkumar
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ajai K Pandey
- Department of Kayachikitsa, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Gupta A, Pandey AN, Sharma A, Tiwari M, Yadav PK, Yadav AK, Pandey AK, Shrivastav TG, Chaube SK. Cyclic nucleotide phosphodiesterase inhibitors: possible therapeutic drugs for female fertility regulation. Eur J Pharmacol 2020; 883:173293. [PMID: 32663542 DOI: 10.1016/j.ejphar.2020.173293] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/21/2020] [Accepted: 06/17/2020] [Indexed: 12/12/2022]
Abstract
Cyclic nucleotide phosphodiesterases (PDEs) are group of enzymes responsible for the hydrolysis of cyclic adenosine 3', 5' monophosphate (cAMP) and cyclic guanosine 3', 5' monophosphate (cGMP) levels in wide variety of cell types. These PDEs are detected in encircling granulosa cells or in oocyte with in follicular microenvironment and responsible for the decrease of cAMP and cGMP levels in mammalian oocytes. A transient decrease of cAMP level initiates downstream pathways to cause spontaneous meiotic resumption from diplotene arrest and induces oocyte maturation. The nonspecific PDE inhibitors (caffeine, pentoxifylline, theophylline, IBMX etc.) as well as specific PDE inhibitors (cilostamide, milrinone, org 9935, cilostazol etc.) have been used to elevate cAMP level and inhibit meiotic resumption from diplotene arrest and oocyte maturation, ovulation, fertilization and pregnancy rates both in vivo as well as under in vitro culture conditions. The PDEs inhibitors are used as powerful experimental tools to demonstrate cyclic nucleotide mediated changes in ovarian functions and thereby fertility. Indeed, non-hormonal nature and reversible effects of nonspecific as well as specific PDE inhibitors hold promise for the development of novel therapeutic drugs for female fertility regulation.
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Affiliation(s)
- Anumegha Gupta
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Alka Sharma
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Anil K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Ajai K Pandey
- Department of Kayachikitsa, Faculty of Ayurveda, Banaras Hindu University, Varanasi, 221005, India
| | - Tulsidas G Shrivastav
- Department of Reproductive Biomedicine, National Institute of Health and Family Welfare, Baba Gang Nath Marg, Munirka, New Delhi, 110067, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India.
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Yadav AK, Yadav PK, Chaudhary GR, Tiwari M, Gupta A, Sharma A, Pandey AN, Pandey AK, Chaube SK. Autophagy in hypoxic ovary. Cell Mol Life Sci 2019; 76:3311-3322. [PMID: 31062072 DOI: 10.1007/s00018-019-03122-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 03/30/2019] [Accepted: 04/29/2019] [Indexed: 12/19/2022]
Abstract
Oxygen deprivation affects human health by modulating system as well as cellular physiology. Hypoxia generates reactive oxygen species (ROS), causes oxidative stress and affects female reproductive health by altering ovarian as well as oocyte physiology in mammals. Hypoxic conditions lead to several degenerative changes by inducing various cell death pathways like autophagy, apoptosis and necrosis in the follicle of mammalian ovary. The encircling somatic cell death interrupts supply of nutrients to the oocyte and nutrient deprivation may result in the generation of ROS. Increased level of ROS could induce granulosa cells as well as oocyte autophagy. Although autophagy removes damaged proteins and subcellular organelles to maintain the cell survival, irreparable damages could induce cell death within intra-follicular microenvironment. Hypoxia-induced autophagy is operated through 5' AMP activated protein kinase-mammalian target of rapamycin, endoplasmic reticulum stress/unfolded protein response and protein kinase C delta-c-junN terminal kinase 1 pathways in a wide variety of somatic cell types. Similar to somatic cells, we propose that hypoxia may induce granulosa cell as well as oocyte autophagy and it could be responsible at least in part for germ cell elimination from mammalian ovary. Hypoxia-mediated germ cell depletion may cause several reproductive impairments including early menopause in mammals.
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Affiliation(s)
- Anil Kumar Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Govind R Chaudhary
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Anumegha Gupta
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Alka Sharma
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Ajai K Pandey
- Department of Kayachikitsa, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Chaudhary GR, Yadav PK, Yadav AK, Tiwari M, Gupta A, Sharma A, Pandey AN, Pandey AK, Chaube SK. Necroptosis in stressed ovary. J Biomed Sci 2019; 26:11. [PMID: 30665407 PMCID: PMC6340166 DOI: 10.1186/s12929-019-0504-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 01/14/2019] [Indexed: 12/15/2022] Open
Abstract
Stress is deeply rooted in the modern society due to limited resources and large competition to achieve the desired goal. Women are more frequently exposed to several stressors during their reproductive age that trigger generation of reactive oxygen species (ROS). Accumulation of ROS in the body causes oxidative stress (OS) and adversely affects ovarian functions. The increased OS triggers various cell death pathways in the ovary. Beside apoptosis and autophagy, OS trigger necroptosis in granulosa cell as well as in follicular oocyte. The OS could activate receptor interacting protein kinase-1(RIPK1), receptor interacting protein kinase-3 (RIPK3) and mixed lineage kinase domain-like protein (MLKL) to trigger necroptosis in mammalian ovary. The granulosa cell necroptosis may deprive follicular oocyte from nutrients, growth factors and survival factors. Under these conditions, oocyte becomes more susceptible towards OS-mediated necroptosis in the follicular oocytes. Induction of necroptosis in encircling granulosa cell and oocyte may lead to follicular atresia. Indeed, follicular atresia is one of the major events responsible for the elimination of majority of germ cells from cohort of ovary. Thus, the inhibition of necroptosis could prevent precautious germ cell depletion from ovary that may cause reproductive senescence and early menopause in several mammalian species including human.
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Affiliation(s)
- Govind R Chaudhary
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Anil K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Anumegha Gupta
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Alka Sharma
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Ajai K Pandey
- Department of Kayachikitsa, Faculty of Ayurveda, Institute of Medical Science, Banaras Hindu University, 221005, Varanasi, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, 221005, Varanasi, India.
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Chaudhary GR, Yadav PK, Yadav AK, Tiwari M, Gupta A, Sharma A, Sahu K, Pandey AN, Pandey AK, Chaube SK. Necrosis and necroptosis in germ cell depletion from mammalian ovary. J Cell Physiol 2018; 234:8019-8027. [PMID: 30341907 DOI: 10.1002/jcp.27562] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 09/14/2018] [Indexed: 01/04/2023]
Abstract
The maximum number of germ cells is present during the fetal life in mammals. Follicular atresia results in rapid depletion of germ cells from the cohort of the ovary. At the time of puberty, only a few hundred (<1%) germ cells are either culminated into oocytes or further get eliminated during the reproductive life. Although apoptosis plays a major role, necrosis as well as necroptosis, might also be involved in germ cell elimination from the mammalian ovary. Both necrosis and necroptosis show similar morphological features and are characterized by an increase in cell volume, cell membrane permeabilization, and rupture that lead to cellular demise. Necroptosis is initiated by tumor necrosis factor and operated through receptor interacting protein kinase as well as mixed lineage kinase domain-like protein. The acetylcholinesterase, cytokines, starvation, and oxidative stress play important roles in necroptosis-mediated granulosa cell death. The granulosa cell necroptosis directly or indirectly induces susceptibility toward necroptotic or apoptotic cell death in oocytes. Indeed, prevention of necrosis and necroptosis pathways using their specific inhibitors could enhance growth/differentiation factor-9 expression, improve survivability as well as the meiotic competency of oocytes, and prevent decline of reproductive potential in several mammalian species and early onset of menopause in women. This study updates the information and focuses on the possible involvement of necrosis and necroptosis in germ cell depletion from the mammalian ovary.
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Affiliation(s)
- Govind R Chaudhary
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Anil K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Anumegha Gupta
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Alka Sharma
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Kankshi Sahu
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Ajai K Pandey
- Department of Kayachikitsa, Faculty of Ayurveda, Institute of Medical Science, Banaras Hindu University, Varanasi, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
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Sharma A, Tiwari M, Gupta A, Pandey AN, Yadav PK, Chaube SK. Journey of oocyte from metaphase-I to metaphase-II stage in mammals. J Cell Physiol 2018; 233:5530-5536. [PMID: 29331044 DOI: 10.1002/jcp.26467] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/05/2018] [Indexed: 12/13/2022]
Abstract
In mammals, journey from metaphase-I (M-I) to metaphase-II (M-II) is important since oocyte extrude first polar body (PB-I) and gets converted into haploid gamete. The molecular and cellular changes associated with meiotic cell cycle progression from M-I to M-II stage and extrusion of PB-I remain ill understood. Several factors drive oocyte meiosis from M-I to M-II stage. The mitogen-activated protein kinase3/1 (MAPK3/1), signal molecules and Rho family GTPases act through various pathways to drive cell cycle progression from M-I to M-II stage. The down regulation of MOS/MEK/MAPK3/1 pathway results in the activation of anaphase-promoting complex/cyclosome (APC/C). The active APC/C destabilizes maturation promoting factor (MPF) and induces meiotic resumption. Several signal molecules such as, c-Jun N-terminal kinase (JNK2), SENP3, mitotic kinesin-like protein 2 (MKlp2), regulator of G-protein signaling (RGS2), Epsin2, polo-like kinase 1 (Plk1) are directly or indirectly involved in chromosomal segregation. Rho family GTPase is another enzyme that along with cell division cycle (Cdc42) to form actomyosin contractile ring required for chromosomal segregation. In the presence of origin recognition complex (ORC4), eccentrically localized haploid set of chromosomes trigger cortex differentiation and determine the division site for polar body formation. The actomyosin contractile activity at the site of division plane helps to form cytokinetic furrow that results in the formation and extrusion of PB-I. Indeed, oocyte journey from M-I to M-II stage is coordinated by several factors and pathways that enable oocyte to extrude PB-I. Quality of oocyte directly impact fertilization rate, early embryonic development, and reproductive outcome in mammals.
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Affiliation(s)
- Alka Sharma
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Anumegha Gupta
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
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Pandey AK, Gupta A, Tiwari M, Prasad S, Pandey AN, Yadav PK, Sharma A, Sahu K, Asrafuzzaman S, Vengayil DT, Shrivastav TG, Chaube SK. Impact of stress on female reproductive health disorders: Possible beneficial effects of shatavari (Asparagus racemosus). Biomed Pharmacother 2018; 103:46-49. [DOI: 10.1016/j.biopha.2018.04.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/31/2018] [Accepted: 04/02/2018] [Indexed: 12/28/2022] Open
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Yadav PK, Tiwari M, Gupta A, Sharma A, Prasad S, Pandey AN, Chaube SK. Germ cell depletion from mammalian ovary: possible involvement of apoptosis and autophagy. J Biomed Sci 2018; 25:36. [PMID: 29681242 PMCID: PMC5911955 DOI: 10.1186/s12929-018-0438-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 04/17/2018] [Indexed: 12/19/2022] Open
Abstract
Mammalian ovary contains millions of germ cells during embryonic life but only few of them are culminated into oocytes that achieve meiotic competency just prior to ovulation. The majority of germ cells are depleted from ovary through several pathways. Follicular atresia is one of the major events that eliminate germ cells from ovary by engaging apoptotic as well as non-apoptotic pathways of programmed cell death. Apoptosis is characterized by several morphological changes that include cell shrinkage, nuclear condensation, membrane blebbing and cytoplasmic fragmentation by both mitochondria- as well as death receptor-mediated pathways in encircling granulosa cells and oocyte. Although necroapoptosis have been implicated in germ cell depletion, autophagy seems to play an active role in the life and death decisions of ovarian follicles. Autophagy is morphologically characterized by intracellular reorganization of membranes and increased number of autophagic vesicles that engulf bulk cytoplasm as well as organelles. Autophagy begins with the encapsulation of cytoplasmic constituents in a membrane sac known as autophagosomes. The autophagic vesicles are then destroyed by the lysosomal enzymes such as hydrolases that results in follicular atresia. It seems that apoptosis as well as autophagy could play active roles in germ cells depletion from ovary. Hence, it is important to prevent these two pathways in order to retain the germ cells in ovary of several mammalian species that are either threatened or at the verge of extinction. The involvement of apoptosis and autophagy in germ cell depletion from mammalian ovary is reviewed and possible pathways have been proposed.
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Affiliation(s)
- Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Anumegha Gupta
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Alka Sharma
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Shilpa Prasad
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India.
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Sahu K, Gupta A, Sharma A, Tiwari M, Pandey AN, Prasad S, Yadav PK, Pandey AK, Shrivastav TG, Chaube SK. Role of granulosa cell mitogen-activated protein kinase 3/1 in gonadotropin-mediated meiotic resumption from diplotene arrest of mammalian oocytes. Growth Factors 2018; 36:41-47. [PMID: 29842809 DOI: 10.1080/08977194.2018.1475372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In mammals, preovulatory oocytes are encircled by several layers of granulosa cells (GCs) in follicular microenvironment. These follicular oocytes are arrested at diplotene arrest due to high level of cyclic nucleotides from encircling GCs. Pituitary gonadotropin acts at the level of encircling GCs and increases adenosine 3',5'-cyclic monophosphate (cAMP) and guanosine 3',5'-cyclic monophosphate (cGMP) and activates mitogen-activated protein kinase 3/1 (MAPK3/1) signaling pathway. The MAPK3/1 disrupts the gap junctions between encircling GCs and oocyte. The disruption of gap junctions interrupts the transfer of cyclic nucleotides to the oocyte that results a drop in intraoocyte cAMP level. A transient decrease in oocyte cAMP level triggers maturation promoting factor (MPF) destabilization. The destabilized MPF finally triggers meiotic resumption from diplotene arrest in follicular oocyte. Thus, MAPK3/1 from GCs origin plays important role in gonadotropin-mediated meiotic resumption from diplotene arrest in follicular oocyte of mammals.
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Affiliation(s)
- Kankshi Sahu
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
| | - Anumegha Gupta
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
| | - Alka Sharma
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
| | - Meenakshi Tiwari
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
| | - Ashutosh N Pandey
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
| | - Shilpa Prasad
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
| | - Pramod K Yadav
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
| | - Ajai K Pandey
- b Department of Kayachikitsa, Faculty of Ayurveda , Banaras Hindu University , Varanasi , India
| | - Tulsidas G Shrivastav
- c Department of Reproductive Biomedicine , National Institute of Health and Family Welfare , New Delhi , India
| | - Shail K Chaube
- a Cell Physiology Laboratory, Department of Zoology , Institute of Science, Banaras Hindu University , Varanasi , India
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Tiwari M, Gupta A, Sharma A, Prasad S, Pandey AN, Yadav PK, Pandey AK, Shrivastav TG, Chaube SK. Role of Mitogen Activated Protein Kinase and Maturation Promoting Factor During the Achievement of Meiotic Competency in Mammalian Oocytes. J Cell Biochem 2017; 119:123-129. [DOI: 10.1002/jcb.26184] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 06/01/2017] [Indexed: 12/25/2022]
Affiliation(s)
- Meenakshi Tiwari
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Anumegha Gupta
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Alka Sharma
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Shilpa Prasad
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Ashutosh N. Pandey
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Pramod K. Yadav
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Ajai K. Pandey
- Faculty of AyurvedaDepartment of KayachikitsaBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Tulsidas G. Shrivastav
- Department of Reproductive BiomedicineNational Institute of Health and Family WelfareBaba Gang Nath MargMunirkaNew Delhi 110067India
| | - Shail K. Chaube
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
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Tiwari M, Prasad S, Pandey AN, Premkumar KV, Tripathi A, Gupta A, Chetan DR, Yadav PK, Shrivastav TG, Chaube SK. Nitric oxide signaling during meiotic cell cycle regulation in mammalian oocytes. Front Biosci (Schol Ed) 2017; 9:307-318. [PMID: 28410121 DOI: 10.2741/s489] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nitric oxide (NO) acts as a major signal molecules and modulate physiology of mammalian oocytes. Ovarian follicles generate large amount of NO through nitric oxide synthase (NOS) pathway to maintain diplotene arrest in preovulatory oocytes. Removal of oocytes from follicular microenvironment or follicular rupture during ovulation disrupt the flow of NO from granulosa cells to the oocyte that results a transient decrease of oocyte cytoplasmic NO level. Decreased NO level reduces cyclic nucleotides level by inactivating guanylyl cyclases directly or indirectly. The reduced cyclic nucleotides level modulate specific phosphorylation status of cyclin-dependent kinase 1 (Cdk1) and triggers cyclin B1 degradation. These changes result in maturation promoting factor (MPF) destabilization that finally triggers meiotic resumption from diplotene as well as metaphase-II (M-II) arrest in most of the mammalian species.
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Affiliation(s)
- Meenakshi Tiwari
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Shilpa Prasad
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Karuppanan V Premkumar
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Anima Tripathi
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Anumegha Gupta
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Doddalingaiah R Chetan
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Pramod K Yadav
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India
| | - Tulsidas G Shrivastav
- Department of Reproductive Biomedicine, National Institute of Health and Family Welfare, Baba Gang Nath Marg, Munirka, New Delhi 110067, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi-221005, U.P., India,
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Prasad S, Tiwari M, Pandey AN, Shrivastav TG, Chaube SK. Impact of stress on oocyte quality and reproductive outcome. J Biomed Sci 2016; 23:36. [PMID: 27026099 PMCID: PMC4812655 DOI: 10.1186/s12929-016-0253-4] [Citation(s) in RCA: 196] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 03/22/2016] [Indexed: 11/10/2022] Open
Abstract
Stress is an important factor that affects physical and mental status of a healthy person disturbing homeostasis of the body. Changes in the lifestyle are one of the major causes that lead to psychological stress. Psychological stress could impact the biology of female reproduction by targeting at the level of ovary, follicle and oocyte. The increased level of stress hormone such as cortisol reduces estradiol production possibly by affecting the granulosa cell functions within the follicle, which results deterioration in oocyte quality. Adaptation of lifestyle behaviours may generate reactive oxygen species (ROS) in the ovary, which further affects female reproduction. Balance between level of ROS and antioxidants within the ovary are important for maintenance of female reproductive health. Physiological level of ROS modulates oocyte functions, while its accumulation leads to oxidative stress (OS). OS triggers apoptosis in majority of germ cells within the ovary and even in ovulated oocytes. Although both mitochondria- as well as death-receptor pathways are involved in oocyte apoptosis, OS-induced mitochondria-mediated pathway plays a major role in the elimination of majority of germ cells from ovary. OS in the follicular fluid deteriorates oocyte quality and reduces reproductive outcome. On the other hand, antioxidants reduce ROS levels and protect against OS-mediated germ cell apoptosis and thereby depletion of germ cells from the ovary. Indeed, OS is one of the major factors that has a direct negative impact on oocyte quality and limits female reproductive outcome in several mammalian species including human.
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Affiliation(s)
- Shilpa Prasad
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India
| | - Tulsidas G Shrivastav
- Department of Reproductive Biomedicine, National Institute of Health and Family Welfare, Baba Gang Nath Marg, Munirka, New Delhi, 110067, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, UP, India.
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Prasad S, Tiwari M, Tripathi A, Pandey AN, Chaube SK. Changes in signal molecules and maturation promoting factor levels associate with spontaneous resumption of meiosis in rat oocytes. Cell Biol Int 2015; 39:759-69. [PMID: 25604742 DOI: 10.1002/cbin.10444] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 01/13/2015] [Indexed: 11/11/2022]
Abstract
The present study was aimed to find out changes in signal molecules and maturation promoting factor (MPF) levels during meiotic cell cycle progression from diplotene and metaphase-II (M-II) arrest, a period during which oocyte achieves meiotic competency. Data suggest that high levels of adenosine 3'-5'-cyclic monophosphate (cAMP), guanosine 3'-5'-cyclic monophosphate (cGMP), and nitric oxide (NO) are associated with diplotene arrest, while reduction in their levels correlates with reduced MPF level and meiotic resumption from diplotene arrest. On the other hand, increased intracellular NO, calcium (Ca(2+) ) as well as hydrogen peroxide (H2 O2 ) levels correlate with decreased cAMP, Thr-161 phosphorylated cyclin-dependent kinase-1 (Cdk1) as well as cyclin B1 levels. The decreased Thr-161 phosphorylated Cdk1 and cyclin B1 level reduce MPF level leading to exit from M-II arrest in oocytes cultured in vitro. These data suggest that the decrease of cAMP level and increase of cytosolic free Ca(2+) as well as H2 O2 levels associate with the reduced MPF level and meiotic resumption from diplotene arrest. On the other hand, increase of NO, cGMP, Ca(2+) as well as H2 O2 levels are associated with reduced MPF and spontaneous exit from M-II arrest in rat oocytes cultured in vitro.
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Affiliation(s)
- Shilpa Prasad
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India
| | - Meenakshi Tiwari
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India
| | - Anima Tripathi
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India
| | - Ashutosh N Pandey
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India
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Pandey AN, Chaube SK. A moderate increase of hydrogen peroxide level is beneficial for spontaneous resumption of meiosis from diplotene arrest in rat oocytes cultured in vitro. Biores Open Access 2014; 3:183-91. [PMID: 25126482 PMCID: PMC4120648 DOI: 10.1089/biores.2014.0013] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Hydrogen peroxide (H2O2) acts as a signaling molecule and modulates various aspects of cell functions in a wide variety of cells including mammalian germ cells. We examined whether a decreased level of intra-oocyte cyclic 3′,5′-adenosine monophosphate (cAMP) leads to accumulation of H2O2, and if so, whether a moderate increase of H2O2 inactivates maturation promoting factor (MPF) during spontaneous resumption of meiosis in rat oocytes cultured in vitro. Removal of cumulus cells and culture of denuded oocytes in vitro significantly decreased oocyte cAMP level and led to spontaneous meiotic resumption from diplotene arrest. The reduced oocyte cAMP level was associated with an increased oocyte H2O2 level and reduced catalase activity. Exogenous supplementation of H2O2 induced meiotic resumption from diplotene arrest in a concentration- and time-dependent manner in oocytes treated with 0.1 mM of 3-isobutyl-1-methylxanthine, while dibutyryl-cAMP and 3-t-butyl-4-hydroxyanisole inhibited the stimulatory effect of exogenous H2O2. The increased intra-oocyte H2O2 level induced Thr-14/Tyr-15 phosphorylation of CDK1, while Thr-161 phosphorylated CDK1 and cyclin B1 levels were reduced significantly. These results suggest that a decreased level of intra-oocyte cAMP is associated with an increased level of H2O2. The increased level of H2O2 was associated with high phosphorylation of Thr-14/Tyr-15 and dephosphorylation of the Thr-161 residue of CDK1 and reduced the cyclin B1 level, which eventually inactivated MPF. The MPF inactivation triggered spontaneous resumption of meiosis from diplotene arrest in rat oocytes cultured in vitro.
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Affiliation(s)
- Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University , Varanasi, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University , Varanasi, India
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Pandey AN, Chaube SK. Reduction of nitric oxide level leads to spontaneous resumption of meiosis in diplotene-arrested rat oocytes cultured in vitro. Exp Biol Med (Maywood) 2014; 240:15-25. [PMID: 25092827 DOI: 10.1177/1535370214545024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The present study was aimed to investigate whether a decrease of nitric oxide (NO) level is beneficial for sponateous resumptiom of meiosis in diplotene-arrested oocytes cultured in vitro. For this purpose, diplotene-arrested oocytes were collected from ovary of immature female rats after a single subcutaneous injection of 20 IU pregnant mare's serum gonadotropins (PMSG) for 48 h. In vitro effects of S-nitroso-l-acetyl penicillamine (SNAP; an NO donor) and aminoguanidine (AG; an inducible NOS [iNOS] inhibitor), intracellular NO, cyclic guanosine monophosphate (cGMP), Cdc25B, Thr-14/Tyr-15 and Thr-161 phosphorylated cyclin-dependent kinase-1 (CDK1), and cyclin B1 levels were analyzed. The SNAP inhibited spontaneous meiotic resumption form diplotene arrest in a concentration-dependent manner, while AG-induced meiotic resumption form diplotene in 0.1 mmol/L 3-isobutyl-1-methylxanthine (IBMX)-treated oocytes in a concentration-dependent manner. The intracellular NO as well as cGMP levels were decreased significantly during spontaneous meiotic resumption from diplotene arrest. The reduction of Cdc25B expression level was associated with the accumulation of Thr-14/Tyr-15 phosphorylated CDK1 level. However, Thr-161 phosphorylated CDK1 as well as cyclin B1 levels were reduced significantly during meiotic resumption from diplotene arrest. Taken together, these data suggest that the inhibition of iNOS expression leads to a decrease of NO and cGMP levels thereby decreasing Cdc25B level. The reduced CDC25 B level leads to accumulation of Thr-14/Tyr-15 phosphorylated CDK1 level. As a result, Thr-161 phosphorylated CDK1 as well as cyclin B1 levels are decreased leading to maturation-promoting factor (MPF) inactivation. The inactive MPF finally induced meiotic resumption from diplotene stage in rat oocytes cultured in vitro.
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Affiliation(s)
- Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
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Kumar N, Pandey AN, Kumari S, Kishore S. Breast Cancer Associated with Von Recklinghausen's Disease: Case Report and Review of Literature. Indian J Surg Oncol 2014; 5:205-7. [PMID: 25419067 DOI: 10.1007/s13193-014-0327-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 06/25/2014] [Indexed: 11/25/2022] Open
Abstract
Breast cancer in association with type- 1 neurofibromatosis (NF1) is a rare clinical entity. Here, we present the case of a 45-year-old woman with typical clinical manifestations of NF1, who presented with a right breast lump, which she had first noticed 8 months back but had disregarded, believing it to be another manifestation of her Von Recklinghausen's disease. Clinical examination and diagnostic workup were suggestive of a breast carcinoma. Subsequently, she underwent modified radical mastectomy, followed by postoperative chemotherapy. Histopathological examination revealed high grade invasive duct carcinoma and multiple neurofibromas. After 7.5 months, she developed recurrence at the drain site with pulmonary and bony metastasis and died 9 months after surgery. Delayed presentation of the patient was the result of her mistaken identification for the breast tumor as a manifestation of NF-1. Early onset, high grade tumor and early recurrence with metastasis place strong emphasis on clinical alertness and to opt for an aggressive treatment option.
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Affiliation(s)
- Nilkamal Kumar
- Department of Surgery, Endocrine Division SGRRIMHS, Patel Nagar, Deharadoon, Uttarakhand 248001 India
| | - A N Pandey
- Department of Medicine, Internal Medicine SGRRIMHS, Patel Nagar, Deharadoon, Uttarakhand 248001 India
| | - Swasty Kumari
- Department of Obstetrics and Gynaecology, Subharti Medical College, Meerut, UP India
| | - Sanjeev Kishore
- Department of Pathology, Endocrine Division SGRRIMHS, Patel Nagar, Deharadoon, Uttarakhand 248001 India
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Chaube SK, Shrivastav TG, Prasad S, Tiwari M, Tripathi A, Pandey AN, Premkumar KV. Clomiphene Citrate Induces ROS-Mediated Apoptosis in Mammalian Oocytes. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ojapo.2014.33006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pandey AN. Response 2. Int J Yoga 2012; 5:76-7. [PMID: 22346074 PMCID: PMC3276941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- AN Pandey
- Spiritual Awareness Program, Hyderabad, India,Address for correspondence: Prof. AN Pandey, Spiritual Awareness Program, Hyderabad, India. E-mail:
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Kumar N, Pandey AN, Kashyap R, Agarwal G. Extramedullary relapse in a case of multiple myeloma involving the thyroid cartilage: case report and review of literature. Indian J Surg Oncol 2011. [PMID: 23204788 DOI: 10.1007/s13193-011-0097-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Nilkamal Kumar
- Department of Surgery, SGRRIMHS and SMI Hospital, Deharadoon, Uttaranchal 248001 India ; SGRRIMS Prof. Campus, Block: E-3, Patel Nagar, Deharadoon, Uttarakhand 248001 India
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Tripathi A, PremKumar KV, Pandey AN, Khatun S, Mishra SK, Shrivastav TG, Chaube SK. Melatonin protects against clomiphene citrate-induced generation of hydrogen peroxide and morphological apoptotic changes in rat eggs. Eur J Pharmacol 2011; 667:419-24. [PMID: 21693115 DOI: 10.1016/j.ejphar.2011.06.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 05/24/2011] [Accepted: 06/06/2011] [Indexed: 02/02/2023]
Abstract
The present study was aimed to determine whether clomiphene citrate-induces generation of hydrogen peroxide in ovary, if so, whether melatonin could scavenge hydrogen peroxide and protect against clomiphene citrate-induced morphological apoptotic changes in rat eggs. For this purpose, forty five sexually immature female rats were given single intramuscular injection of 10 IU pregnant mare's serum gonadotropin for 48 h followed by single injections of 10 IU human chorionic gonadotropin and clomiphene citrate (10 mg/kg bw) with or without melatonin (20 mg/kg bw) for 16 h. The histology of ovary, ovulation rate, hydrogen peroxide concentration and catalase activity in ovary and morphological changes in ovulated eggs were analyzed. Co-administration of clomiphene citrate along with human chorionic gonadotropin significantly increased hydrogen peroxide concentration and inhibited catalase activity in ovary, inhibited ovulation rate and induced egg apoptosis. Supplementation of melatonin reduced hydrogen peroxide concentration and increased catalase activity in the ovary, delayed meiotic cell cycle progression in follicular oocytes as well as in ovulated eggs since extrusion of first polar body was still in progress even after ovulation and protected against clomiphene citrate-induced egg apoptosis. These results clearly suggest that the melatonin reduces oxidative stress by scavenging hydrogen peroxide produced in the ovary after clomiphene citrate treatment, slows down meiotic cell cycle progression in eggs and protects against clomiphene citrate-induced apoptosis in rat eggs.
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Affiliation(s)
- Anima Tripathi
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
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Pandey AN, Tripathi A, Premkumar KV, Shrivastav TG, Chaube SK. Reactive oxygen and nitrogen species during meiotic resumption from diplotene arrest in mammalian oocytes. J Cell Biochem 2011; 111:521-8. [PMID: 20568115 DOI: 10.1002/jcb.22736] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Mammalian ovary is metabolically active organ and generates by-products such as reactive oxygen species (ROS) and reactive nitrogen species (RNS) on an extraordinary scale. Both follicular somatic cells as well as oocyte generate ROS and RNS synchronously and their effects are neutralized by intricate array of antioxidants. ROS such as hydrogen peroxide (H(2)O(2)) and RNS such as nitric oxide (NO) act as signaling molecules and modulate various aspects of oocyte physiology including meiotic cell cycle arrest and resumption. Generation of intraoocyte H(2)O(2) can induce meiotic resumption from diplotene arrest probably by the activation of adenosine monophosphate (AMP)-activated protein kinase A (PRKA)-or Ca(2+)-mediated pathway. However, reduced intraoocyte NO level may inactivate guanylyl cyclase-mediated pathway that results in the reduced production of cyclic 3',5'-guanosine monophosphate (cGMP). The reduced level of cGMP results in the activation of cyclic 3',5'-adenosine monophosphate (cAMP)-phosphodiesterase 3A (PDE3A), which hydrolyses cAMP. The reduced intraoocyte cAMP results in the activation of maturation promoting factor (MPF) that finally induces meiotic resumption. Thus, a transient increase of intraoocyte H(2)O(2) level and decrease of NO level may signal meiotic resumption from diplotene arrest in mammalian oocytes.
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Affiliation(s)
- Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, 221005 Uttar Pradesh, India
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Mehrotra R, Singh M, Kumar D, Pandey AN, Gupta RK, Sinha US. Age specific incidence rate and pathological spectrum of oral cancer in Allahabad. Indian J Med Sci 2003; 57:400-4. [PMID: 14515030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
BACKGROUND Cancer of the oral cavity is one of the commonest cancers in India. Use of smokeless tobacco (Pan masala, Zarda etc ) is on the increase in North India and specially in Uttar Pradesh. AIMS To assess the patients characteristics and histopathological subtypes of the oral cancer in our region. SETTINGS AND DESIGN A single institutional retrospective study of 11 years from 1990 to 2000 was designed. Data was collected year wise using the tumour registry data. MATERIAL AND METHODS A total of 40,559 biopsies were examined in the department during 1990-2000, out of which the oral cavity constituted 759 biopsies. The data was analysed with emphasis on age, sex, risk factors, site and histology. STATISTICAL ANALYSIS The data was analysed utilizing the Kolomogroo-Smirnov two sample test. RESULTS A comparison of the age specific incidence rates of oral cancer during 1990-2000 in Allahabad showed that the incidence was maximum in the 50-59 years age group and squamous cell carcinoma grade I was the most prevalent type. Of the total of 759 biopsies from oral cavity, 303 malignant cases. 232 (76.57%) were males and 71 (23.43% were females with a male to female ratio of 3.27:1. The tongue was the most frequently involved site--found in 42.57% cases. On an average, 63 new cases of oral cavity per annum were detected during this period. CONCLUSIONS Properly structured site specific data like this can augment National Cancer Registry Programme (NCRP) and is an essential indicator for the magnitude and the pattern of the cancer problem in India Urgent public health measures like public education and oral cancer awareness are required to curb this avoidable epidemic.
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Affiliation(s)
- R Mehrotra
- Department of Pathology, Moti Lal Nehru Medical College, Allahabad.
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Ram RS, Prakash O, Varma SP, Pandey AN. Photoacoustic determination of the color of inks. Appl Opt 1989; 28:1965-1967. [PMID: 20555443 DOI: 10.1364/ao.28.001965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Photoacoustic spectroscopy, using a PZT transducer, is a quick, direct, and accurate technique to measure ink colors from the absorption region and maximum absorption position.
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Pandey AN, Rama Rao B, Raghunathan K. Gadadhara. Bull Indian Inst Hist Med Hyderabad 1975; 5:193-7. [PMID: 11613613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
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Sastry VV, Pandey AN. Jajjata. Bull Indian Inst Hist Med Hyderabad 1975; 5:115-22. [PMID: 11616379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
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Pandey AN, Sastry VV. Swami Kumara. Bull Indian Inst Hist Med Hyderabad 1975; 5:65-7. [PMID: 11609900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Sastry VV, Pandey AN. Bhaţţāra Haricandra. Bull Indian Inst Hist Med Hyderabad 1975; 5:1-7. [PMID: 11609885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Abstract
The orbital valence force
field has been used to calculate the force constants of some oxides and
oxyanions of transition metals, e.g. MnO42-,
MnO43-, RuO4, RuO4-,
Ru042-, and OsO4. The force constants are compared with the Urey-Bradley force constants and have been discussed
briefly in relation to relative stabilities of the corresponding ions. The
applicability of the Lennard-Jones potential, to approximate the interaction
between non-bonded atoms, has been examined.
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