Measurement of intrascrotal temperature in normal and subfertile men

Zorgniotti, Adrian W.; Sealfon, Andrew I.

doi:10.1530/jrf.0.0820563

Cited by 50 publications

(30 citation statements)

References 4 publications

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“…We believe that the reduced ADC values observed in patients with varicocele may be related to these histopathological alterations. Unilateral varicocele has been known to cause an increase in both testicular temperature secondary to autoimmune and hormonal effects, according to the literature [19][20][21]. The reduced contralateral ADC values observed in our study may possibly be appearing as a result of these effects.…”

Section: Discussionsupporting

confidence: 51%

Comparison of diffusion-weighed MRI findings of the testis in patients with the advanced stage unilateral testicular varicocele

Burulday¹,

Şahan²,

Erdem³

et al. 2017

Med-Science

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The aim of this study was to compare the testicular apparent diffusion coefficient (ADC) values of the patients with unilateral advanced stage varicocele and healthy volunteers. Twenty-seven patients with unilateral advanced stage varicocele and twenty-seven healthy volunteers were included in the study. Those with a diagnosis of clinical varicocele and the healthy volunteers were examined clinical and color Doppler ultrasonography. Patients with a unilateral (left) varicocele clinically grade III, color Doppler ultrasound grade IV-V were included in the study. All the patients and healthy volunteers were obtained ADC values. Mean values were calculated and statistical comparison was performed. ADC values were analysed by using an independent t test for each participant. Pearson's correlation test was used for the comparison of left pampiniform venous diameter and both testicular parenchymal ADC values. Left testicular ADC values were observed to be significantly lower when a comparison of the testicular parenchymal with left advanced stage varicocele and healthy volunteers revealed significantly low left testicular ADC values in patients (p<0.05) Furthermore, a negative correlation was detected between the increase in the left testicular venous diameter and parenchymal ADC values of the bilateral testis in patients with left advanced stage varicocele (left p= -624, right p= -0.382). Diffusion weighted magnetic resonance imaging may be beneficial in defining the testicular damage in patients with varicocele.

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Section: Discussionsupporting

confidence: 51%

Comparison of diffusion-weighed MRI findings of the testis in patients with the advanced stage unilateral testicular varicocele

Burulday¹,

Şahan²,

Erdem³

et al. 2017

Med-Science

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“…Des neuf 6tudes dans lesquelles les temp6ratures scrotales ont 6t6 mesur6es des deux c6t6s [48,50,28,49,8,2,31,24,45], il appara~t une augmentation des temp6ra-tures scrotales moyennes droite et gauche par rapport h la population t6moin. Pour quatre de ces 6tudes [28,2,31,24], l'augmentation est par ailleurs significativement plus importante du c6t6 de la varicocble que du c6t6 oppos6 (Tableau 2).…”

Section: Temperatures Scrotales Et Varicoc~le Gaucheunclassified

“…L'intensit6 de cette augmentation n'est toutefois pas diff6rente de celle observ6e en cas de varicocble gauche [49,45]. …”

Section: Temperatures Scrotales Et Varicoc~le Bilat~raleunclassified

“…Par rapport aux populations t6moins, ces 6tudes rapportent une augmentation des temp6ratures scrotales moyennes droite et gauche dans les populations inf6condes, que les patients soient porteurs ou non d'une varicoc~le [28,49]. L'une des trois 6tudes [2] ne retrouve aucune modification des temp6ratures scrotales moyennes dans la population inf6conde sans varicoc~le ; des facteurs peuvent, toutefois, ~tre source de biais dans …”

Section: Temperatures Scrotales Varicoc~les Et Absence De Varicoc~leunclassified

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Températures et varicocèles

Mieusset

2002

Androl.

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Bien que retrouv(~e chez des hommes f(~conds, la varicoc~le est considdr(~e comme responsable de I'infeconditd par de nombreux auteurs. L"hyperthermie' est I'un des mecanismes physiopathologiques ~voqu(~s pour expliquer les alt(~rations de la spermatogen~se dues a la varicoc~le. A partir des rdsultats rapportds dans la littdrature concernant b la fois des situations cliniques chez I'homme et des donndes exp(~rimentales chez I'animal, les constatations suivantes peuvent 6tre faites : dans les populations d'hommes porteurs de varicoc~le unilat(~rale, les tempdratures moyennes testiculaires et scrotales sont augmentdes de fa(~on bilaterale dans la plupart des dtudes. La bilatdralit(~ de la varicocele n'est pas associde a une augmentation plus importante de la tempdrature. L'effet de la cure chirurgicale sur la temp(~rature testiculaire ou scrotale reste discut(L Enfin, le module animal de varicocele exp(~rimentale n'a pas jusqu'alors apport(~ des donndes suppldmentaires concernant les mecanismes par lesquels la temperature testiculaire est augment(~e en cas de varicoc~le. En conclusion, s'il existe bien une association entre varicocele et tempdrature testiculaire, cette derni~re n'est pas systdmatiquement augment(~e.Mots cl~s. Infecondite, varicocele, temperature, debit sanguin, homme, animalL'inf6condit6 masculine peut r6sulter de causes tr~s diff6-rentes ; pour certaines pathologies, comme par exemple << la vaficoc~le >>, la certitude de causalit6 n'est pas encore clairement 6tablie. La varicoc~le est une varice localis6e, au niveau du cordon spermatique, sur le trajet des veines drainant le sang de retour du testicule. Cette varice est retrouv6e lors de l'examen clinique chez environ 12% des hommes dans la population g6n6rale et chez environ 25% chez les hommes consultant pour une inf6condit6. Les raisons de l'existence d'une varicoc~le, qui survient naturellement dans d' autres esp~ces a scrotum pendulaire comme le b61ier [6], ne sont pas connues chez l'homme. Lorsqu'elle est pr6sente chez un homme inf6cond, la varicockle est consid6r6e, h partir de crit~res vari6s et non toujours pr6cis6ment d6finis, comme la cause de cette inf6-condit6. En vertu de quoi, le traitement 6tiologique de cette inf6condit6 repose sur l'ex6r~se chirurgicale de la varicocble ou son occlusion [47]. La pathog6nicit6 de la varicocble sur la fertilit6, c'est ~t dire les m6canismes par lesquels la varice va r6duire la capacit6 de l'homme ~ faire un enfant, est expliqu6e actuellement par plusieurs hypoth6ses [39] parmi lesquelles << l'hyperthermie >> ou augmentation anormale de la temp6rature locale.Nous allons faire l'6tat de la question sur cette hypothbse thermique des effets de la varicoc~le sur la fertilit6 masculine, en prenant en compte les donn6es cliniques chez l'homme et les donn6es exp6rimentales chez l'animal.

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“…High ambient air temperatures may inhibit thermal loss through the scrotum, leading to a rise in testicular temperature [Procope, 19651. Infertile men without varicocele have been noted to have significantly higher intrascrotal temperatures than men without fertility problems, although the reasons for this temperature difference are not fully understood [Zorgniotti and Sealfon, 1988;Mieusset et al, 1987b1. Both animal and human studies have confirmed the sensitivity of sperm production to extrinsic heat [Henderson et al, 19861. Studies of male animals in elevated environmental temperatures have indicated that levels of reproductive hormones can be altered significantly, a factor that may be related to observed decreases in sperm production [Bedrak et al.…”

Section: Decreasedmentioning

confidence: 99%

Reproductive hazards of fire fighting I. Non‐chemical hazards

Agnew

McDiarmid

Lees

et al. 1991

American J Industrial Med

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Fire fighters are regularly exposed to chemical and non-chemical agents that have known or suspected adverse effects on reproductive health. Although chemical agents have received some attention, non-chemical hazards such as heat, noise, and physical exertion have only recently been examined for their reproductive effects. There is evidence that heat, noise, and physical exertion may affect various endpoints of reproductive health, including fertility, fetal loss, and growth parameters of the offspring. In particular, hyperthermia, a major fire fighting hazard, has been shown to impair male fertility and may also be teratogenic. Further study of the potential reproductive effects of this and other common non-chemical agents in the fire environment is needed to ensure the reproductive health of male and female fire fighters.

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Measurement of intrascrotal temperature in normal and subfertile men

Cited by 50 publications

References 4 publications

Comparison of diffusion-weighed MRI findings of the testis in patients with the advanced stage unilateral testicular varicocele

Comparison of diffusion-weighed MRI findings of the testis in patients with the advanced stage unilateral testicular varicocele

Températures et varicocèles

Reproductive hazards of fire fighting I. Non‐chemical hazards

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