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Peek V, Harden LM, Damm J, Aslani F, Leisengang S, Roth J, Gerstberger R, Meurer M, von Köckritz-Blickwede M, Schulz S, Spengler B, Rummel C. LPS Primes Brain Responsiveness to High Mobility Group Box-1 Protein. Pharmaceuticals (Basel) 2021; 14:ph14060558. [PMID: 34208101 PMCID: PMC8230749 DOI: 10.3390/ph14060558] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 04/30/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 12/30/2022] Open
Abstract
High mobility group box (HMGB)1 action contributes to late phases of sepsis, but the effects of increased endogenous plasma HMGB1 levels on brain cells during inflammation are unclear. Here, we aimed to further investigate the role of HMGB1 in the brain during septic-like lipopolysaccharide-induced inflammation in rats (LPS, 10 mg/kg, i.p.). HMGB-1 mRNA expression and release were measured in the periphery/brain by RT-PCR, immunohistochemistry and ELISA. In vitro experiments with disulfide-HMGB1 in primary neuro-glial cell cultures of the area postrema (AP), a circumventricular organ with a leaky blood–brain barrier and direct access to circulating mediators like HMGB1 and LPS, were performed to determine the direct influence of HMGB1 on this pivotal brain structure for immune-to-brain communication. Indeed, HMGB1 plasma levels stayed elevated after LPS injection. Immunohistochemistry of brains and AP cultures confirmed LPS-stimulated cytoplasmatic translocation of HMGB1 indicative of local HMGB1 release. Moreover, disulfide-HMGB1 stimulation induced nuclear factor (NF)-κB activation and a significant release of interleukin-6, but not tumor necrosis factor α, into AP culture supernatants. However, only a few AP cells directly responded to HMGB1 with increased intracellular calcium concentration. Interestingly, priming with LPS induced a seven-fold higher percentage of responsive cells to HMGB1. We conclude that, as a humoral and local mediator, HMGB1 enhances brain inflammatory responses, after LPS priming, linked to sustained sepsis symptoms.
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Affiliation(s)
- Verena Peek
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (V.P.); (J.D.); (S.L.); (J.R.); (R.G.)
| | - Lois M. Harden
- Brain Function Research Group, School of Physiology, Faculty of Health Sciences, University of Witwatersrand, Johannesburg 2193, South Africa;
| | - Jelena Damm
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (V.P.); (J.D.); (S.L.); (J.R.); (R.G.)
| | - Ferial Aslani
- Institute of Anatomy and Cell Biology of the Medical Faculty, Justus Liebig University, 35392 Giessen, Germany;
| | - Stephan Leisengang
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (V.P.); (J.D.); (S.L.); (J.R.); (R.G.)
| | - Joachim Roth
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (V.P.); (J.D.); (S.L.); (J.R.); (R.G.)
| | - Rüdiger Gerstberger
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (V.P.); (J.D.); (S.L.); (J.R.); (R.G.)
| | - Marita Meurer
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany and Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (M.M.); (M.v.K.-B.)
| | - Maren von Köckritz-Blickwede
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany and Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (M.M.); (M.v.K.-B.)
| | - Sabine Schulz
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (S.S.); (B.S.)
| | - Bernhard Spengler
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (S.S.); (B.S.)
| | - Christoph Rummel
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (V.P.); (J.D.); (S.L.); (J.R.); (R.G.)
- Correspondence:
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Meyer F, Hekmat N, Mansourzadeh S, Fobbe F, Aslani F, Hoffmann M, Saraceno CJ. Optical rectification of a 100 W average power mode-locked thin-disk oscillator. Opt Lett 2018; 43:5909-5912. [PMID: 30547967 DOI: 10.1364/ol.43.005909] [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] [Received: 10/04/2018] [Accepted: 10/25/2018] [Indexed: 06/09/2023]
Abstract
We demonstrate terahertz (THz) generation at megahertz repetition rate by optical rectification in GaP crystals, using excitation average power levels exceeding 100 W. The laser source is a state-of-the-art diode-pumped Yb:YAG SESAM-mode-locked thin-disk laser, capable of generating 580 fs pulses at an average power up to 120 W and a repetition rate of 13.4 MHz directly from a one-box oscillator, without the need for any extra amplification stages. In this first demonstration, we measure a maximum THz average power of 78 μW at a central frequency of 0.8 THz. Our results show that optical rectification of state-of-the-art high average power ultrafast sources in nonlinear crystals is within reach and paves the way toward high average power, ultrafast laser pumped THz sources.
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Aslani F, Sebastian T, Keidel M, Fröhlich S, Elsässer HP, Schuppe HC, Klug J, Mahavadi P, Fijak M, Bergmann M, Meinhardt A, Bhushan S. Resistance to apoptosis and autophagy leads to enhanced survival in Sertoli cells. Mol Hum Reprod 2018; 23:370-380. [PMID: 28379541 DOI: 10.1093/molehr/gax022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 07/08/2016] [Accepted: 03/31/2017] [Indexed: 12/13/2022] Open
Abstract
STUDY QUESTION What is the underlying mechanism of Sertoli cell (SC) resistance to cell death? SUMMARY ANSWER High expression of prosurvival B-cell lymphoma-2 (BCL2) proteins and inhibition of apoptosis and autophagy prolongs SC survival upon exposure to stress stimuli. WHAT IS KNOWN ALREADY In human and in experimental models of orchitis, tolerogenic SC survive stress conditions, while germ cells undergo massive apoptosis. In general, non-dividing highly differentiated cells tend to resist stress conditions for a longer time by favoring activation of prosurvival mechanisms and inhibition of cell death pathways. STUDY DESIGN, SIZE, DURATION In this cross sectional study, conditions stimulating apoptosis and autophagy were used to induce cell death in primary rat SC. Primary rat peritubular cells (PTC) and immortalized rat 93RS2 SC were used as controls. Each cell isolation was counted as one experiment (n = 1), and each experiment was repeated three to six times. PARTICIPANTS/MATERIALS, SETTING, METHODS Testis biopsy samples from infertile or subfertile patients and testis samples from rats with experimental autoimmune orchitis were used for immunohistological analysis. Primary SC were isolated from 19-day-old male Wistar rats. To maintain cell purity, cells were cultured in serum-free medium for apoptosis experiments and in medium supplemented with 1% serum for autophagy analyses. To induce apoptosis, cells were stimulated with staurosporine, borrelidin, cisplatin and etoposide for 4 or 24 h. Caspase three activation was examined by immunoblotting and enzymatic activity assay. Mitochondrial membrane potential was measured using tetramethylrhodamine methyl ester followed by flow cytometric analysis. Cytochrome c release was monitored by immunofluorescence. Cell viability was determined using the methylthiazole tetrazolium assay. To monitor autophagy flux, cells were deprived of nutrients using Hank's balanced salt solution for 1, 2 and 3 h. Formation of autophagosomes was analyzed by using immunoblotting, immunofluorescence labeling and ultrastructural analyses. Relative mRNA levels of genes involved in the regulation of apoptosis and autophagy were evaluated. Extracellular high mobility group box protein one was measured as a marker of necrosis using ELISA. MAIN RESULTS AND THE ROLE OF CHANCE SC survive the inflammatory conditions in vivo in human testis and in experimental autoimmune orchitis. Treatment with apoptosis inducing chemotherapeutics did not cause caspase three activation in isolated rat SC. Moreover, mitochondrial membrane potential and mitochondrial localization of cytochrome c were not changed by treatment with staurosporine, suggesting a premitochondrial blockade of apoptosis in SC. Expression levels of prosurvival BCL2 family members were significantly higher in SC compared to PTC at both mRNA and protein levels. Furthermore, after nutrient starvation, autophagy signaling was initiated in SC as observed by decreased levels of phosphorylated UNC- 51-like kinase -1 (ULK1). However, levels of light chain 3 II (LC3 II) and sequestosome1 (SQSTM1) remained unchanged, indicating blockade of the autophagy flux. Lysosomal activity was intact in SC as shown by accumulation of LC3 II following administration of lysosomal protease inhibitors, indicating that inhibition of autophagy flux occurs at a preceding stage. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION In this study, we have used primary SC from prepubertal rats. Caution should be taken when translating our results to adult animals, where crosstalk with other testicular cells and hormonal factors may also play a role in regulating survival of SC. WIDER IMPLICATIONS OF THE FINDINGS Our results suggest that inhibition of autophagy and apoptosis following exposure to extrinsic stress stimuli promotes SC survival, and is a possible mechanism to explain the robustness of SC in response to stress. Cell death resistance in SC is crucial for the recovery of spermatogenesis after chemotherapy treatment in cancer patients. Additionally, understanding the molecular mechanisms of SC survival unravels valuable target proteins, such as BCL2, that may be manipulated therapeutically to control cell viability depending on the context of the disease. STUDY FUNDING AND COMPETING INTEREST(S) This study was funded by the Deutsche Forschungsgemeinschaft (DFG) Grant BH93/1-1, and by the International Research Training Group between Justus Liebig University of Giessen and Monash University, Melbourne (GRK 1871/1) funded by the DFG and Monash University. The support of the Medical Faculty of Justus-Liebig University of Giessen is gratefully acknowledged. The authors declare no conflict of interest.
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Affiliation(s)
- Ferial Aslani
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
| | - Tim Sebastian
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
| | - Miguel Keidel
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
| | - Suada Fröhlich
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
| | - Hans-Peter Elsässer
- Department of Cell Biology and Cytopathology, Philipps University of Marburg, Germany
| | - Hans-Christian Schuppe
- Department of Urology, Pediatric Urology and Andrology, Justus-Liebig University, Giessen, Germany
| | - Jörg Klug
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
| | - Poornima Mahavadi
- Department of Internal Medicine, Justus-Liebig University, Universities of Giessen and Marburg Lung Center, Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Monika Fijak
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
| | - Martin Bergmann
- Institute of Veterinary Anatomy, Histology, and Embryology, Justus-Liebig-University, Giessen, Germany
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
| | - Sudhanshu Bhushan
- Department of Anatomy and Cell Biology, Justus-Liebig University, Aulweg 123, Giessen 35392, Germany
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Lu Y, Rafiq A, Zhang Z, Aslani F, Fijak M, Lei T, Wang M, Kumar S, Klug J, Bergmann M, Chakraborty T, Meinhardt A, Bhushan S. Uropathogenic Escherichia coli virulence factor hemolysin A causes programmed cell necrosis by altering mitochondrial dynamics. FASEB J 2018; 32:4107-4120. [PMID: 29490169 DOI: 10.1096/fj.201700768r] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Uropathogenic Escherichia coli (UPEC) is the most common cause of urinary tract infections. In this study, UPEC strains harboring hemolysin A (HlyA) did not induce programmed cell death pathways by the activation of caspases. Instead, the UPEC pore-forming toxin HlyA triggered an increase in mitochondrial Ca2+ levels and manipulated mitochondrial dynamics by causing fragmentation of the mitochondrial network. Alterations in mitochondrial dynamics resulted in severe impairment of mitochondrial functions by loss of membrane potential, increase in reactive oxygen species production, and ATP depletion. Moreover, HlyA caused disruption of plasma membrane integrity that was accompanied by extracellular release of the danger-associated molecules high-mobility group box 1 (HMGB1) and histone 3 (H3). Our results indicate that UPEC induced programmed cell necrosis by irreversibly impairing mitochondrial function. This finding suggests a strategy devised by UPEC at the onset of infection to escape early innate immune response and silently propagate inside host cells.-Lu, Y., Rafiq, A., Zhang, Z., Aslani, F., Fijak, M., Lei, T., Wang, M., Kumar, S., Klug, J., Bergmann, M., Chakraborty, T., Meinhardt, A., Bhushan, S. Uropathogenic Escherichia coli virulence factor hemolysin A causes programmed cell necrosis by altering mitochondrial dynamics.
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Affiliation(s)
- Yongning Lu
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Amir Rafiq
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Zhengguo Zhang
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Ferial Aslani
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Monika Fijak
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Tao Lei
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Ming Wang
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Sanjeev Kumar
- Department of Medical Microbiology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Jörg Klug
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Martin Bergmann
- Institute of Veterinary Anatomy, Histology, and Embryology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Trinad Chakraborty
- Department of Medical Microbiology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Sudhanshu Bhushan
- Department of Anatomy and Cell Biology, Unit of Reproductive Biology, Justus-Liebig-University Giessen, Giessen, Germany
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Lei T, Moos S, Klug J, Aslani F, Bhushan S, Wahle E, Fröhlich S, Meinhardt A, Fijak M. Galectin-1 enhances TNFα-induced inflammatory responses in Sertoli cells through activation of MAPK signalling. Sci Rep 2018; 8:3741. [PMID: 29487346 PMCID: PMC5829165 DOI: 10.1038/s41598-018-22135-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 02/19/2018] [Indexed: 01/21/2023] Open
Abstract
Galectin-1 (Gal-1) is a pleiotropic lectin involved in the modulation of immune responses. Using a model of rat experimental autoimmune orchitis (EAO), we investigated the role of Gal-1 in testicular inflammation. EAO is characterized by leukocytic infiltrates in the interstitium, damage of spermatogenesis and production of inflammatory mediators like TNFα and MCP1 causing infertility. In normal rat testis Gal-1 was mainly expressed in Sertoli cells and germ cells. In the inflamed testis, Gal-1 expression was significantly downregulated most likely due to germ cell loss. Analyses of lectin binding and expression of glucosaminyl- and sialyltransferases indicated that the glycan composition on the cell surface of Sertoli and peritubular cells becomes less favourable for Gal-1 binding under inflammatory conditions. In primary Sertoli cells Gal-1 expression was found to be upregulated after TNFα challenge. Pretreatment with Gal-1 synergistically and specifically enhanced TNFα-induced expression of MCP1, IL-1α, IL-6 and TNFα in Sertoli cells. Combined stimulation of Sertoli cells with Gal-1 and TNFα enhanced the phosphorylation of MAP kinases as compared to TNFα or Gal-1 alone. Taken together, our data show that Gal-1 modulates inflammatory responses in Sertoli cells by enhancing the pro-inflammatory activity of TNFα via stimulation of MAPK signalling.
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Affiliation(s)
- Tao Lei
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Sven Moos
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Jörg Klug
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Ferial Aslani
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Sudhanshu Bhushan
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Eva Wahle
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Suada Fröhlich
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany
| | - Monika Fijak
- Department of Anatomy and Cell Biology, Justus-Liebig University, Giessen, Germany.
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Affiliation(s)
- Ferial Aslani
- Justus Liebig University Giessen, Institut für Anatomie und Zellbiologie, Aulweg 123, 35385 Giessen, Germany
| | - Jörg Klug
- Justus Liebig University Giessen, Institut für Anatomie und Zellbiologie, Aulweg 123, 35385 Giessen, Germany.
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Bhushan S, Aslani F, Zhang Z, Sebastian T, Elsässer HP, Klug J. Isolation of Sertoli Cells and Peritubular Cells from Rat Testes. J Vis Exp 2016:e53389. [PMID: 26890157 DOI: 10.3791/53389] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The testis, and in particular the male gamete, challenges the immune system in a unique way because differentiated sperm first appear at the time of puberty - more than ten years after the establishment of systemic immune tolerance. Spermatogenic cells express a number of proteins that may be seen as non-self by the immune system. The testis must then be able to establish tolerance to these neo-antigens on the one hand but still be able to protect itself from infections and tumor development on the other hand. Therefore the testis is one of a few immune privileged sites in the body that tolerate foreign antigens without evoking a detrimental inflammatory immune response. Sertoli cells play a key role for the maintenance of this immune privileged environment of the testis and also prolong survival of cotransplanted cells in a foreign environment. Therefore primary Sertoli cells are an important tool for studying the immune privilege of the testis that cannot be easily replaced by established cell lines or other cellular models. Here we present a detailed and comprehensive protocol for the isolation of Sertoli cells - and peritubular cells if desired - from rat testes within a single day.
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Affiliation(s)
- Sudhanshu Bhushan
- Institut für Anatomie und Zellbiologie, Justus-Liebig-Universität Gießen
| | - Ferial Aslani
- Institut für Anatomie und Zellbiologie, Justus-Liebig-Universität Gießen
| | - Zhengguo Zhang
- Institut für Anatomie und Zellbiologie, Justus-Liebig-Universität Gießen
| | - Tim Sebastian
- Institut für Anatomie und Zellbiologie, Justus-Liebig-Universität Gießen
| | | | - Jörg Klug
- Institut für Anatomie und Zellbiologie, Justus-Liebig-Universität Gießen;
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Golestan Hashemi FS, Rafii MY, Razi Ismail M, Mohamed MTM, Rahim HA, Latif MA, Aslani F. Opportunities of marker-assisted selection for rice fragrance through marker-trait association analysis of microsatellites and gene-based markers. Plant Biol (Stuttg) 2015; 17:953-61. [PMID: 25865409 DOI: 10.1111/plb.12335] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 04/03/2015] [Indexed: 05/27/2023]
Abstract
Developing fragrant rice through marker-assisted/aided selection (MAS) is an economical and profitable approach worldwide for the enrichment of an elite genetic background with a pleasant aroma. The PCR-based DNA markers that distinguish the alleles of major fragrance genes in rice have been synthesised to develop rice scent biofortification through MAS. Thus, the present study examined the aroma biofortification potential of these co-dominant markers in a germplasm panel of 189 F2 progeny developed from crosses between a non-aromatic variety (MR84) and a highly aromatic but low-yielding variety (MRQ74) to determine the most influential diagnostic markers for fragrance biofortification. The SSRs and functional DNA markers RM5633 (on chromosome 4), RM515, RM223, L06, NKSbad2, FMbadh2-E7, BADEX7-5, Aro7 and SCU015RM (on chromosome 8) were highly associated with the 2AP (2-acetyl-1-pyrroline) content across the population. The alleles traced via these markers were also in high linkage disequilibrium (R(2) > 0.70) and explained approximately 12.1, 27.05, 27.05, 27.05, 25.42, 25.42, 20.53, 20.43 and 20.18% of the total phenotypic variation observed for these biomarkers, respectively. F2 plants harbouring the favourable alleles of these effective markers produced higher levels of fragrance. Hence, these rice plants can be used as donor parents to increase the development of fragrance-biofortified tropical rice varieties adapted to growing conditions and consumer preferences, thus contributing to the global rice market.
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Affiliation(s)
- F S Golestan Hashemi
- Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - M Y Rafii
- Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - M Razi Ismail
- Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - M T M Mohamed
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - H A Rahim
- Bioscience and Agrotechnology Division, Malaysian Nuclear Agency, Bangi, Kajang, Selangor, Malaysia
| | - M A Latif
- Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
| | - F Aslani
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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Amirul Alam M, Juraimi A, Rafii M, Hamid A, Aslani F, Alam M. Effects of salinity and salinity-induced augmented bioactive compounds in purslane (Portulaca oleracea L.) for possible economical use. Food Chem 2015; 169:439-47. [DOI: 10.1016/j.foodchem.2014.08.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 10/24/2022]
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Fijak M, Damm LJ, Wenzel JP, Aslani F, Walecki M, Wahle E, Eisel F, Bhushan S, Hackstein H, Baal N, Schuler G, Konrad L, Rafiq A, O'Hara L, Smith LB, Meinhardt A. Influence of Testosterone on Inflammatory Response in Testicular Cells and Expression of Transcription Factor Foxp3 in T Cells. Am J Reprod Immunol 2015; 74:12-25. [DOI: 10.1111/aji.12363] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 01/02/2015] [Indexed: 01/31/2023] Open
Affiliation(s)
- Monika Fijak
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Lara-Jil Damm
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Jan-Per Wenzel
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Ferial Aslani
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Magdalena Walecki
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Eva Wahle
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Florian Eisel
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Sudhanshu Bhushan
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Holger Hackstein
- Institute for Clinical Immunology and Transfusion Medicine; Justus-Liebig-University; Giessen Germany
| | - Nelli Baal
- Institute for Clinical Immunology and Transfusion Medicine; Justus-Liebig-University; Giessen Germany
| | - Gerhard Schuler
- Clinic for Obstetrics; Gynecology and Andrology of Large and Small Animals; Faculty of Veterinary Medicine; Justus-Liebig-University; Giessen Germany
| | - Lutz Konrad
- Department of Obstetrics and Gynaecology; Faculty of Medicine; Justus-Liebig-University; Giessen Germany
| | - Amir Rafiq
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
| | - Laura O'Hara
- MRC Centre for Reproductive Health; University of Edinburgh; Edinburgh UK
| | - Lee B. Smith
- MRC Centre for Reproductive Health; University of Edinburgh; Edinburgh UK
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology; Justus-Liebig-University; Giessen Germany
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Aslani F, Schuppe HC, Guazzone VA, Bhushan S, Wahle E, Lochnit G, Lustig L, Meinhardt A, Fijak M. Targeting high mobility group box protein 1 ameliorates testicular inflammation in experimental autoimmune orchitis. Hum Reprod 2014; 30:417-31. [PMID: 25452436 DOI: 10.1093/humrep/deu320] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
STUDY QUESTION Does high mobility group box protein 1 (HMGB1) regulate inflammatory reactions in a rat model of experimental autoimmune orchitis (EAO)? SUMMARY ANSWER HMGB1 appears to be involved in regulating inflammatory reactions in testes, as HMGB1 is translocated from testicular cells during the course of EAO and blocking its action by ethyl pyruvate (EP) reduces disease progression and spermatogenic damage. WHAT IS KNOWN ALREADY Despite its immune privileged status, the human testis is prone to inflammatory lesions associated with male factor infertility. Accumulating evidence shows that HMGB1 plays an important role in onset and progression of autoimmune diseases. STUDY DESIGN, SIZE, DURATION This is a cross sectional and longitudinal study involving Wistar male rats immunized with testicular homogenates to induce EAO 50 (EAO50; n = 10) and 80 (EAO80; n = 10) days after first immunization. Control adjuvant animals received saline instead of testicular homogenate (n = 16). Untreated animals (n = 10) were also studied. An interventional study was performed to block the action of HMGB1 starting 20 days after first immunization in EAO animals and respective controls (n = 17). Rats were treated i.p. with EP and the effect of EP treatment on testicular pathogenesis was evaluated 30 days later. Moreover, human testicular biopsies from infertile men with focal lymphocytic infiltrates (n = 7) and sections with intact spermatogenesis (n = 6) were probed with antibodies against HMGB1. PARTICIPANTS/MATERIALS, SETTING, METHODS Testicular RNA and protein extracts from EAO animals, EAO animals treated with EP and relevant controls were used for analysis of cytokine expression by real-time RT-PCR and enzyme-linked immunosorbent assay. HMGB1 was co-localized on rat testicular cross sections with antibodies against testicular macrophages (TM), peritubular cells (PTC) and Sertoli cells (SC). Interaction of HMGB1 and its receptors (RAGE, TLR4) as well signaling pathways after HMGB1 stimulation were studied in isolated TM, PTC and SC by proximity ligation assay and western blot, respectively. Furthermore, HMGB1 immunofluorescence on human testicular biopsies was performed. MAIN RESULTS AND THE ROLE OF CHANCE HMGB1 was translocated from the nuclei in EAO testes and testes of infertile men with impaired spermatogenesis and lymphocytic infiltrates. Elevated HMGB1 levels were observed during late phase of EAO. In testicular somatic cells HMGB1 receptors Toll-like receptor 4 (TLR4) and receptor for advanced glycation end products (RAGE) were differentially expressed: HMGB1-TLR4 binding was predominant in TM, while HMGB1-RAGE interaction was prevalent in SC and PTC. In support, HMGB1 triggered extracellular signal regulated kinase (ERK)1/2 and cyclic adenosine monophosphate (cAMP) response element-binding protein (CREB) activation in SC and PTC, while TM responded to HMGB1 stimulation with p38 mitogen-activated protein kinase (MAPK) and p65 nuclear factor Kappa B (NF-ĸB) phosphorylation followed by increased tumor necrosis factor α (TNF-α) and interleukin 6 (IL-6) mRNA levels. In vivo treatment of EAO animals with EP 20 days after induction of disease revealed beneficial effects, as documented by reduced disease progression and spermatogenic damage, lower macrophage numbers, as well as decreased concentrations of HMGB1 and IL-6 in the testis compared with EAO controls. LIMITATIONS, REASONS FOR CAUTION The ability of HMGB1 to bind to a wide range of receptors makes it difficult to prevent its action by blockade of a specific receptor; therefore we applied EP, a drug preventing HMGB1 release from cells. Due to its mode of action EP decreases also the secretion of some other pro-inflammatory cytokines. Using isolated primary cells imposes limitations for cell transfection studies. As a compromise between purity and yield primary cells need to be isolated from animals of different age, which has to be considered when comparing their responses. WIDER IMPLICATIONS OF THE FINDINGS HMGB1 could be a promising target in attenuating testicular damage caused by inflammatory reactions.
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Affiliation(s)
- Ferial Aslani
- Department of Anatomy and Cell Biology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany
| | - Hans-Christian Schuppe
- Department of Urology, Pediatric Urology and Andrology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany
| | - Vanesa A Guazzone
- Instituto de Investigaciones Biomédicas UBA-CONICET, Facultad de Medicina, Universidad de Buenos Aires, C1121 ABG, Buenos Aires, Argentina
| | - Sudhanshu Bhushan
- Department of Anatomy and Cell Biology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany
| | - Eva Wahle
- Department of Anatomy and Cell Biology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany
| | - Günter Lochnit
- Institute of Biochemistry, Faculty of Medicine, Justus-Liebig University of Giessen, 35392 Giessen, Germany
| | - Livia Lustig
- Instituto de Investigaciones Biomédicas UBA-CONICET, Facultad de Medicina, Universidad de Buenos Aires, C1121 ABG, Buenos Aires, Argentina
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany
| | - Monika Fijak
- Department of Anatomy and Cell Biology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany
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Aslani F, Meinhardt A, Bhushan S, Schuppe HC, Fijak M. 7. Cytokine 2013. [DOI: 10.1016/j.cyto.2013.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Aslani F, Modarresi MH, Soltanghoraee H, Akhondi MM, Shabani A, Lakpour N, Sadeghi MR. Seminal molecular markers as a non-invasive diagnostic tool for the evaluation of spermatogenesis in non-obstructive azoospermia. Syst Biol Reprod Med 2011; 57:190-6. [DOI: 10.3109/19396368.2011.569906] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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