Location of Sympathetic Postganglionic and Sensory Neurons Innervating the Testis in the Male Chicken

Wakita, Tsuyoshi; Ohmori, Yasushige; Watanabe, Takatomo; Fukuta, Kohta

doi:10.1046/j.1439-0264.1999.00209.x

Cited by 3 publications

(3 citation statements)

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“…In available literature, there is no data on the involvement of SCG in the innervation of the testis except one paper dealing with the innervation of the chicken testis (Wakita et al. , 1999).…”

Section: Discussionmentioning

confidence: 99%

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Sources of the porcine testis innervation

Sienkiewicz

2010

Andrologia

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This study was carried out on three adult male pigs of the large White Polish breed weighing 110-130 kg each. The animals were anaesthetised and injected with retrograde tracer Fast Blue (FB) into right testis. Three weeks later, the pigs were deeply anaesthetised and perfused transcardially with fixative (4% paraformaldehyde in 0.1 M phosphate buffer pH 7.4). Collected ganglia were cut with freezing microtome into 12-μm-thick sections. The sections were examined under a fluorescent microscope (Zeiss). FB-positive neurones were found in pelvic ganglia (anterior pelvic ganglion) (15.4% of all FB(+) neurones), prevertebral ganglia (caudal mesenteric, testicular, aortico-renal and renal ganglia) (59% of all FB(+) neurones), sympathetic chain ganglia (last four lumbar and first three sacral ganglia) (18.1% of all FB(+) neurones) and dorsal root ganglia (DRG) (first three lumbar and first three sacral ganglia) (7.4% of all FB(+) neurones). The majority of FB-positive nerve cell bodies were observed in ipsilateral ganglia, but they were also found in contralateral ganglia (approximately 85% and 15% respectively). Thus, FB-positive neurones were located in the left prevertebral, sympathetic chain and DRG, but surprisingly, they were absent in left anterior pelvic ganglia.

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Section: Discussionmentioning

confidence: 99%

“…, 2000), dog (Tamura et al. , 1996b) and rooster (Wakita et al. , 1999), but there is no data regarding sources of the testis innervation in the pig; therefore, it was decided to study this topic.…”

Section: Introductionmentioning

confidence: 99%

Sources of the porcine testis innervation

Sienkiewicz

2010

Andrologia

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“…This pathway and its inhibitory influence on T secretion during stress have been defined in mammals [26,28]. Avian testes receive sympathetic innervation [65] but the function of this innervation in birds has not been investigated.…”

Section: Inhibitory Effect Of Acute Stress On Plasma Testosterone: Chmentioning

confidence: 99%

Rapid stress-induced inhibition of plasma testosterone in free-ranging male rufous-winged sparrows, Peucaea carpalis: Characterization, time course, and recovery

Deviche

Gao

Davies

et al. 2012

General and Comparative Endocrinology

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Article (refereed) -postprintDeviche, Pierre; Gao, Sisi; Davies, Scott; Sharp, Peter J.; Dawson, Alistair. 2012Rapid stress-induced inhibition of plasma testosterone in free-ranging male rufouswinged sparrows, Peucaea carpalis: characterization, time course, and recovery. Endocrinology, 177 (1). 1-8. 10.1016/j.ygcen.2012.02.022 Contact CEH NORA team at noraceh@ceh.ac.uk General and ComparativeThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. 1Rapid stress-induced inhibition of plasma testosterone in free- 25Chronic stress generally inhibits the activity of the reproductive system. Acute stress also is 26 often inhibitory, but the mechanism involved and its persistence of action once animals are no 27 longer exposed to the stressor are poorly understood. We investigated the effect of capture and 28 restraint stress on plasma testosterone (T), luteinizing hormone (LH), and corticosterone 29(CORT) in free-ranging male rufous-winged sparrows, Peucaea carpalis. Stress decreased 30 plasma T between 10 and 30 min after capture and restraint but did not influence plasma LH, 31the main hormone that controls T secretion, suggesting that stress did not decrease plasma T 32 by inhibiting LH secretion. The stress-induced decrease in plasma T was associated with 33 elevated plasma CORT, but there was no evidence that these effects were functionally related. 34Plasma stress-induced T was positively related to plasma initial T measured within 2 min of 35 capture. This relationship was, however, complex as plasma T decreased proportionally more in 36 response to stress in sparrows with high than low plasma initial T. The relative sensitivity to a 37 same stressor was, therefore, individually variable and this variation was related to initial plasma 38 T. Birds caught and restrained for 30 min, and then released on their breeding territory before 39 recapture up to 6 hours later, maintained depressed plasma T, indicating that the effect of acute 40 stress on this hormone persists after the stressor removal. These studies provide new 41 information on the effects of acute stress on plasma T in free-ranging birds. In particular, they decrease plasma T by impairing LH secretion or attenuating the testicular sensitivity to this 77 hormone [13]. Acute stress in birds typically increases plasma CORT in 5-10 min [44,33,69,13] 78 and in the rufous-winged sparrow, plasma T decreases by 30% -50% after capture and 89No study has, to our knowledge, investigated the time course of endocrine recovery from 90 mild acute stress in wild, free-ranging birds. The second objective of the present work was to 106during the study period were in breeding condition [36,12,57]. 108 Capture and blood sample collection 110Sparrows were captured in response to simulated territorial intrusion (STI: conspecific 111 song playback), while they were on their breeding territory and using a Japanese mist ...

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