An update on male infertility and intratesticular testosterone—insight into novel serum biomarkers

Author(s):  
Karim Sidhom ◽  
Kapilan Panchendrabose ◽  
Uday Mann ◽  
Premal Patel
2020 ◽  
Vol 21 (5) ◽  
pp. 1728 ◽  
Author(s):  
Rossella Cannarella ◽  
Rosita A. Condorelli ◽  
Laura M. Mongioì ◽  
Sandro La Vignera ◽  
Aldo E. Calogero

Male infertility affects half of infertile couples and, currently, a relevant percentage of cases of male infertility is considered as idiopathic. Although the male contribution to human fertilization has traditionally been restricted to sperm DNA, current evidence suggest that a relevant number of sperm transcripts and proteins are involved in acrosome reactions, sperm‒oocyte fusion and, once released into the oocyte, embryo growth and development. The aim of this review is to provide updated and comprehensive insight into the molecular biology of spermatogenesis, including evidence on spermatogenetic failure and underlining the role of the sperm-carried molecular factors involved in oocyte fertilization and embryo growth. This represents the first step in the identification of new possible diagnostic and, possibly, therapeutic markers in the field of apparently idiopathic male infertility.


2019 ◽  
Vol 8 (9) ◽  
pp. 1463 ◽  
Author(s):  
Ahmed Ismaeel ◽  
Marco E. Franco ◽  
Ramon Lavado ◽  
Evlampia Papoutsi ◽  
George P. Casale ◽  
...  

Peripheral artery disease (PAD) is a common atherosclerotic disease characterized by narrowed or blocked arteries in the lower extremities. Circulating serum biomarkers can provide significant insight regarding the disease progression. Here, we explore the metabolomics signatures associated with different stages of PAD and investigate potential mechanisms of the disease. We compared the serum metabolites of a cohort of 26 PAD patients presenting with claudication and 26 PAD patients presenting with critical limb ischemia (CLI) to those of 26 non-PAD controls. A difference between the metabolite profiles of PAD patients from non-PAD controls was observed for several amino acids, acylcarnitines, ceramides, and cholesteryl esters. Furthermore, our data demonstrate that patients with CLI possess an altered metabolomic signature different from that of both claudicants and non-PAD controls. These findings provide new insight into the pathophysiology of PAD and may help develop future diagnostic procedures and therapies for PAD patients.


2012 ◽  
Vol 10 (1) ◽  
pp. 26-37 ◽  
Author(s):  
Alaa Hamada ◽  
Sandro C. Esteves ◽  
Ashok Agarwal

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Michael J. McGill ◽  
Qiuting Wen ◽  
Ho-Ching Yang ◽  
Salman Shahid ◽  
Yu-Chien Wu

Background:  Traumatic brain injury (TBI) is a leading cause of death and disability throughout the world, estimated to carry an annual global incidence of over 27 million cases. Mild TBI (mTBI), commonly known as concussion, is the mildest form of TBI and accounts for roughly 90% of all head injuries. Sports-related concussion (SRC) contributes significantly to this statistic with millions of athletes sustaining high-impact injuries in contact sports such as football, soccer, and lacrosse. By examining the white-matter microstructure, diffusion tensor imaging (DTI) has shown excellent capabilities for detecting pathophysiologic changes after SRC and monitoring symptom progression. Biomarkers including neurofilament light (NfL) and tau have been implicated in SRC and may provide insight into the duration of post-concussive symptoms. At this time, very few studies have been published evaluating the relationship between these serum biomarkers and alterations to DTI metrics.     Methods:  In the present study, we examined the association between serum biomarkers NfL and tau to further understand the relationship between these biomarkers and neuroimaging findings seen with diffusion tensor imaging (DTI) after exposure to a sports-related concussive event.     Results:  Serum tau levels decreased significantly at the 24-48h post-injury time point compared to 6h post-injury. Serum tau levels then elevated significantly at the asymptomatic time point in comparison to the 24-48h post-injury time point. The serum tau level was significantly associated with higher mean diffusivity (MD) in the white-matter tracts. Serum NfL had minimal associations with white matter diffusion metrics.     Conclusion and Potential Impact:  This research serves to better inform future investigations into the relationship between DTI metrics and serum biomarkers in the context of mTBI and SRC. This information may contribute to the development of a simple bedside serum analysis with potential to offer tremendous insight into the comprehensive brain health of patients who are being evaluated for SRC, thereby streamlining the therapeutic process and providing more accessible healthcare to patients in locations where advanced imaging techniques are not readily accessible.  


2009 ◽  
Vol 123 (5) ◽  
pp. 477-481 ◽  
Author(s):  
A K Arya ◽  
H L Beer ◽  
J Benton ◽  
I Lewis-Jones ◽  
A C Swift

AbstractBackground and methods:Young's syndrome describes a combination of male infertility, azoospermia, bronchiectasis and sinusitis. Although Young's syndrome is a well accepted disorder within the realms of infertility medicine, it is also accepted as being a potential cause of sino-nasal disease which is rarely seen by otolaryngologists. However, the significance of the sinus component within this triad is not fully understood. To gain further insight into the relationship of sinusitis with Young's syndrome, we reviewed all of the currently available published literature.Results:Within the reviewed literature, the diagnosis of sinusitis in Young's syndrome was crude and poorly defined; there was little emphasis on sinus disease in most publications.Conclusions:The prevalence of Young's syndrome is reported to be declining, and the level of evidence regarding sinus disease within this syndrome is limited to case series only. There is, in fact, little evidence to support Young's syndrome being a significant aetiological factor for sinus disease, nor indeed to support the existence of Young's syndrome as an entity in its own right. The only documented aetiological factor is mercury exposure in childhood, an event that is seldom currently encountered; this would support our theory of the extinction of the condition. As an incidental finding, we found that the term Young's syndrome refers to two different medical conditions.


2012 ◽  
Vol 9 (12) ◽  
pp. 678-690 ◽  
Author(s):  
Ashok Agarwal ◽  
Alaa Hamada ◽  
Sandro C. Esteves

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