Afane M, Dubost JJ, Sauvezie B, Issoual D, Dosgilbert A, Grizard G, Boucher D (1998) Modulation of Leydig cell testosterone production by secretory products of macrophages. Andrologia 30:71–78
Di Fiore MM, Lamanna C, Assissi L, Botte V (2008) Opposing effects of d-aspartic acid and nitric oxide on tuning of testosterone production in mallard testis during the reproductive cycle. Reprod Biol Endocrinol 6:28–37
Dixit VD, Parvizi N (2001) Nitric oxide and the control of reproduction. Anim Reprod Sci 65:1–16
Dubey nee Pathak N, Lal B (2008) Nitric oxide: an autocrine regulator of Leydig cell steroidogenesis in the Asian catfish, Clarias batrachus. Gen Comp Endocrinol 158:161–167
Dubey nee Pathak N, Lal B (2009) Paracrine role of macrophage produced-nitric oxide (NO) in Leydig cell steroidogenesis in a teleost, Clarias batrachus: impact of gonadotropin, growth hormone and insulin on NO production by testicular macrophages. Gen Comp Endocrinol 160:12–18
Dubey nee Pathak N, Lal B (2010) Seasonality in expression and distribution of nitric oxide synthase isoforms in the testis of the catfish, Clarias batrachus: role of nitric oxide in testosterone production. Comp Biochem Physiol 151(3):286–293
El-Gohary M, Awara WM, Nassar S, Hawas S (1999) Deltamethrin-induced testicular apoptosis in rats: the protective effect of nitric oxide synthase inhibitor. Toxicol 132:1–8
Hales DB (2002) Testicular macrophage modulation of Leydig cell steroidogenesis. J Reprod Immunol 57:3–18
Huston JC (1990) Changes in the concentration and size of testicular macrophages during development. Biol Reprod 43:885–890
Huston JC (2006) Physiological interaction between macrophages and Leydig cells. Exp Biol Med 231:1–7
Khan UW, Rai U (2008) Paracrine role of testicular macrophages in control of Leydig cell activities in the wall lizard, Hemidactylus flaviviridis. Gen Comp Endocrinol 156:44–50
Kostic T, Andric S, Kovacevic R, Maric D (1998) The involvement of nitric oxide in stress-impaired testicular steroidogenesis. Eur J Pharmacol 346:267–273
Lee NPY, Cheng CY (2004) Nitric oxide/nitric oxide synthase, spermatogenesis, and tight junction dynamics. Biol Reprod 70:267–276
Lister A, Van der Kraak G (2002) Modulation of goldfish testicular testosterone production in vitro by tumor necrosis factor α, interleukin-1β, and macrophage conditioned media. J Exp Zool 292:477–486
Roselli M, Keller PJ, Dubey RK (1998) Role of nitric oxide in the biology, physiology and pathophysiology of reproduction. Hum Reprod Update 4:3–24
Sastry KVH, Moudgal RP, Mohan J, Tyagi JS, Rao GS (2002) Spectrophotometric determination of serum nitrite and nitrate by copper-cadmium alloy. Anal Biochem 306:79–82
Valenti S, Cuttica CM, Fazzuoli L, Giordano G, Giusti M (1999) Biphasic effect of nitric oxide on testosterone and cyclic GMP production by purified rat Leydig cells cultured in vitro. Int J Androl 22:336–341
Weisman DA, Niu E, Sottas GR, Holmes CM, Huston JC, Hardy MP (2005) Paracrine modulation of androgen synthesis in rat Leydig cell by nitric oxide. Int J Androl 26:369–378
Welch C, Watson ME, Poth M, Hong T, Francis GL (1995) Evidence to suggest nitric oxide is an interstitial regulator of Leydig cell steroidogenesis. Metabolism 44:234–238
Wink DA, Osawa Y, Darbyshire JF, Jones CR, Eshenaur SC, Nims RW (1993) Inhibition of cytochromes P450 by nitric oxide and a nitric oxide-releasing agent. Arch Biochem Biophys 300:115–123
Zini A, O’Bryan MK, Magid MS, Schlegel PN (1996) Immunohistochemical localization of endothelial nitric oxide synthase in human testis, epididymis, and vas deferens suggests a possible role for nitric oxide in spermatogenesis, sperm maturation, and programmed cell death. Biol Reprod 55:935–941
Zini A, Abitbol J, Girardi SK, Schulsinger D, Goldstein M, Schlegel PN (1998) Germ cell apoptosis and endothelial nitric oxide synthase (eNOS) expression following ischemia- reperfusion injury to testis. Arch Androl 41:57–65