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Letteratura scientifica selezionata sul tema "Spermatozoa Immunology"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 1 febbraio 2022

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Articoli di riviste sul tema "Spermatozoa Immunology"

1

Schumacher, G. F. B. "Immunology of spermatozoa and cervical mucus*". Human Reproduction 3, n. 3 (aprile 1988): 289–300. http://dx.doi.org/10.1093/oxfordjournals.humrep.a136698.

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2

Ceballos, Ana, Federico Remes Lenicov, Juan Sabatté, Christian Rodríguez Rodrígues, Mercedes Cabrini, Carolina Jancic, Silvina Raiden et al. "Spermatozoa capture HIV-1 through heparan sulfate and efficiently transmit the virus to dendritic cells". Journal of Experimental Medicine 206, n. 12 (26 ottobre 2009): 2717–33. http://dx.doi.org/10.1084/jem.20091579.

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Abstract (sommario):
Semen is the main vector for HIV-1 dissemination worldwide. It contains three major sources of infectious virus: free virions, infected leukocytes, and spermatozoa-associated virions. We focused on the interaction of HIV-1 with human spermatozoa and dendritic cells (DCs). We report that heparan sulfate is expressed in spermatozoa and plays an important role in the capture of HIV-1. Spermatozoa-attached virus is efficiently transmitted to DCs, macrophages, and T cells. Interaction of spermatozoa with DCs not only leads to the transmission of HIV-1 and the internalization of the spermatozoa but also results in the phenotypic maturation of DCs and the production of IL-10 but not IL-12p70. At low values of extracellular pH (∼6.5 pH units), similar to those found in the vaginal mucosa after sexual intercourse, the binding of HIV-1 to the spermatozoa and the consequent transmission of HIV-1 to DCs were strongly enhanced. Our observations support the notion that far from being a passive carrier, spermatozoa acting in concert with DCs might affect the early course of sexual transmission of HIV-1 infection.
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3

Shan, Dan, Samuel Kofi Arhin, Junzhao Zhao, Haitao Xi, Fan Zhang, Chufang Zhu e Yangyang Hu. "Effects of SLIRP on Sperm Motility and Oxidative Stress". BioMed Research International 2020 (13 ottobre 2020): 1–5. http://dx.doi.org/10.1155/2020/9060356.

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Abstract (sommario):
Background. Deficient spermatozoon motility is one of the main causes of male infertility. However, there are still no accurate and effective treatments in a clinical setting for male asthenospermia. Exploring the genes and mechanism of asthenospermia has become one of the hot topics in reproductive medicine. Our aim is to study the effect of SLRIP on human spermatozoon motility and oxidative stress. Methods. Sperm samples were collected including a normospermia group (60 cases) and an asthenospermia group (50 cases). SLIRP protein expression in spermatozoa was examined by western blotting, and relative mRNA expression of SLIRP in spermatozoa was quantified by reverse transcription polymerase chain reaction. Levels of reactive oxygen species (ROS), adenosine triphosphate (ATP) content, and the activity of manganese superoxide dismutase (MnSOD) in spermatozoa were also measured. Results. The mRNA level and protein expression of SLIRP in the asthenospermia group were significantly reduced compared with those in the normospermia group. The ROS active oxygen level in the asthenospermia group significantly increased; however, the ATP content decreased significantly as well as the activity of MnSOD. Conclusion. SLIRP regulates human male fertility, and SLIRP and sperm progressive motility are positively correlated. The expression of SLIRP is declined, oxidative damage is increased, and energy metabolism is decreased in spermatozoa of asthenospermia patients compared to normospermia participants.
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Malm, Johan, Ole Sørensen, Terese Persson, Margareta Frohm-Nilsson, Bengt Johansson, Anders Bjartell, Hans Lilja, Mona Ståhle-Bäckdahl, Niels Borregaard e Arne Egesten. "The Human Cationic Antimicrobial Protein (hCAP-18) Is Expressed in the Epithelium of Human Epididymis, Is Present in Seminal Plasma at High Concentrations, and Is Attached to Spermatozoa". Infection and Immunity 68, n. 7 (1 luglio 2000): 4297–302. http://dx.doi.org/10.1128/iai.68.7.4297-4302.2000.

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Abstract (sommario):
ABSTRACT Innate immunity is important for the integrity of the host against potentially invasive pathogenic microorganisms in the environment. Antibiotic peptides with broad antimicrobial activity are part of the innate immune system. We investigated the presence of the cathelicidin, human cationic antimicrobial protein (hCAP-18), in the male reproductive system. We found strong expression of the hCAP-18 gene by in situ hybridization and hCAP-18 protein, as detected by immunohistochemistry, in the epithelium of the epididymis, but not in the testis. The highest expression in the epididymis was in the caudal part. Western blotting showed a doublet band, the upper part corresponding to the size of hCAP-18 in plasma and neutrophils. Using a specific enzyme-linked immunosorbent assay (ELISA), levels of 86.5 ± 37.8 μg/ml (mean ± standard deviation; range, 41.8 to 142.8 μg/ml; n = 10) were detected in seminal plasma from healthy donors, which is 70-fold higher than the level in blood plasma. Flow cytometry and immunocytochemistry revealed the presence of hCAP-18 on spermatozoa. ELISA measurement showed levels of 196 ng/106 spermatozoa, corresponding to 6.6 × 106 molecules of hCAP-18 per spermatozoon. Our results suggest a key role for hCAP-18 in the antibacterial integrity of the male reproductive system. The attachment of hCAP-18 to spermatozoa may implicate a role for hCAP-18 in conception.
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5

Friberg, J., N. Gleicher, M. Suarez e E. Confino. "Chlamydia Attached to Spermatozoa". Journal of Infectious Diseases 152, n. 4 (1 ottobre 1985): 854. http://dx.doi.org/10.1093/infdis/152.4.854.

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6

Dussaix, E., D. Guetard, C. Dauguet, M. D'Almeida, J. Auer, A. Ellrodt, L. Montagnier e M. Auroux. "Spermatozoa as potential carriers of HIV". Research in Virology 144 (gennaio 1993): 487–95. http://dx.doi.org/10.1016/s0923-2516(06)80064-6.

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7

MEINERTZ, HELLE, LARS LINNET, HANS WOLF e TAGE HJORT. "Antisperm Antibodies on Epididymal Spermatozoa". American Journal of Reproductive Immunology 25, n. 4 (maggio 1991): 158–62. http://dx.doi.org/10.1111/j.1600-0897.1991.tb01087.x.

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8

Witkin, Steven S. "Immunoregulatory properties of human spermatozoa". Journal of Reproductive Immunology 15 (luglio 1989): 164. http://dx.doi.org/10.1016/0165-0378(89)90330-6.

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9

Gorga, Fernanda, Marilena Galdiero, Elisabetta Buommino e Emilia Galdiero. "Porins and Lipopolysaccharide Induce Apoptosis in Human Spermatozoa". Clinical Diagnostic Laboratory Immunology 8, n. 1 (1 gennaio 2001): 206–8. http://dx.doi.org/10.1128/cdli.8.1.206-208.2001.

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Abstract (sommario):
ABSTRACT Treatment of human spermatozoa with porins or lipopolysaccharide (LPS) increases spontaneous apoptosis in these cells. Porins and LPS were extracted from Salmonella enterica serovar Typhimurium and Pasteurella multocida and were mixed with human spermatozoa for detection of levels of apoptosis.
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10

Baldi, Elisabetta, Michaela Luconi, Lorella Bonaccorsi e Gianni Forti. "Signal transduction pathways in human spermatozoa". Journal of Reproductive Immunology 53, n. 1-2 (gennaio 2002): 121–31. http://dx.doi.org/10.1016/s0165-0378(01)00089-4.

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Più fonti

Libri sul tema "Spermatozoa Immunology"

1

Immune infertility: The impact of immune reactions on human infertility. Dordrecht: Springer Verlag, 2009.

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2

Immunology of Gametes And Embryo Implantation (Chemical Immunology). S. Karger Publishers (USA), 2005.

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Capitoli di libri sul tema "Spermatozoa Immunology"

1

"Autoimmunity of Testis, Ovary, and Spermatozoa". In Manual of Molecular and Clinical Laboratory Immunology, 7th Edition, 1116–24. American Society of Microbiology, 2006. http://dx.doi.org/10.1128/9781555815905.ch126.

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