scholarly journals Seminal reactive oxygen species, a novel biochemical assay for testing male fertility?

2018 ◽  
Vol 40 (3) ◽  
pp. 12-13
Author(s):  
Anastasia Dimakopoulou ◽  
Channa N. Jayasena
Keyword(s):  
Male Fertility ◽  
Management Strategies ◽  
Male Partner ◽  
Unprotected Sex ◽  
Diagnostic Tools ◽  
Sperm Function ◽  
Oxygen Species ◽  
Effective Management ◽  
Management Options ◽  
Positive Pregnancy Test

Infertility is defined as a failure to achieve a positive pregnancy test over 12 months of regular unprotected sex. It is a devastating condition affecting 15% of couples and is socially marginalizing. Despite significant focus on the female, nearly half of cases are in fact due to poor sperm function in the male partner. It is therefore surprising that despite the existence of numerous diagnostic tools and management options currently available for female infertility, very few exist for their male counterparts. So, what can we do to diagnose men with impaired fertility promptly and direct couples to effective management strategies?

scholarly journals Clinical Guidelines and Practice

2010 ◽  
Vol 34 (4) ◽  
pp. 413-420 ◽  
Author(s):  
Derek J. Hoare ◽  
Deborah A. Hall
Keyword(s):  
Clinical Guidelines ◽  
Chronic Condition ◽  
Good Practice ◽  
Management Strategies ◽  
Evidence Based ◽  
Effective Management ◽  
Management Options ◽  
Policy Makers ◽  
Subjective Tinnitus ◽  
High Level

Subjective tinnitus is an enigmatic and chronic condition that is predominantly managed as symptomatic. Little high-level evidence exists for the efficacy and specificity of the various tinnitus management strategies currently used, and this is reflected in documents that aim to guide clinicians. As a consequence, there are clear gaps in evidence-based practice linking diagnosis to the most effective management strategies as well as a general lack of consensus about which are appropriate strategies for assessment and management. Several guidelines have been produced from research efforts and from expert opinion. All recommend standardization of assessment and a range of management options but do not yet provide a means to link the two. The authors call for clinicians, scientists, and policy makers to work together to address this barrier to good practice.

scholarly journals Survival and Inoculum Production of Gibberella zeae in Wheat Residue

Plant Disease ◽  
2004 ◽  
Vol 88 (7) ◽  
pp. 724-730 ◽  
Author(s):  
S. A. Pereyra ◽  
R. Dill-Macky ◽  
A. L. Sims
Keyword(s):  
Management Strategies ◽  
Soil Surface ◽  
Triticum Aestivum L ◽  
Gibberella Zeae ◽  
Effective Management ◽  
Head Blight ◽  
Fusarium Spp ◽  
Residue Decomposition ◽  
Inoculum Production ◽  
Mesh Bags

Survival and inoculum production of Gibberella zeae (Schwein.) Petch (anamorph Fusarium graminearum (Schwabe)), the causal agent of Fusarium head blight of wheat and barley, was related to the rate of wheat (Triticum aestivum L.) residue decomposition. Infested wheat residue, comprising intact nodes, internodes, and leaf sheaths, was placed in fiberglass mesh bags on the soil surface and at 7.5- to 10-cm and 15- to 20-cm depths in chisel-plowed plots and 15 to 20 cm deep in moldboard-plowed plots in October 1997. Residue was sampled monthly from April through November during 1998 and every 2 months through April to October 1999. Buried residue decomposed faster than residue placed on the soil surface. Less than 2% of the dry-matter residue remained in buried treatments after 24 months in the field, while 25% of the residue remained in the soil-surface treatment. Survival of G. zeae on node tissues was inversely related to the residue decomposition rate. Surface residue provided a substrate for G. zeae for a longer period of time than buried residue. Twenty-four months after the initiation of the trial, the level of colonization of nodes in buried residue was half the level of colonization of residue on the soil surface. Colonization of node tissues by G. zeae decreased over time, but increased for other Fusarium spp. Ascospores of G. zeae were still produced on residue pieces after 23 months, and these spores were capable of inducing disease. Data from this research may assist in developing effective management strategies for residues infested with G. zeae.

Modeling Habitat Suitability and Management Options for Maintaining Round Whitefish (Prosopium cylindraceum) in Adirondack Ponds

2021 ◽  
Author(s):  
Amy Kathleen Conley ◽  
Matthew D. Schlesinger ◽  
James G. Daley ◽  
Lisa K. Holst ◽  
Timothy G. Howard
Keyword(s):  
Species Distribution Model ◽  
Management Strategies ◽  
Distribution Model ◽  
Nonnative Species ◽  
Simulated Population ◽  
Management Options ◽  
The Past ◽  
Almost All ◽  
Reintroduction Success ◽  
Maximum Air Temperature

Habitat loss, acid precipitation, and nonnative species have drastically reduced the number of Adirondack waterbodies occupied by round whitefish (Prosopium cylindraceum). The goal of this study was to 1) increase the probability of reintroduction success by modeling the suitability of ponds for reintroduction and 2) better understand the effects of different rates of pond reclamation. We created a species distribution model that identified 70 waterbodies that were physically similar to occupied ponds. The most influential variables for describing round whitefish habitat included trophic, temperature, and alkalinity classes; waterbody maximum depth; maximum air temperature; and surrounding soil texture and impervious surface. Next, we simulated population dynamics under a variety of treatment scenarios and compared the probability of complete extirpation using a modified Markov model. Under almost all management strategies, and under pressure from nonnative competitors like that observed in the past 30 years, the number of occupied ponds will decline over the next 100 years. However, restoring one pond every 3 years would result in a 99% chance of round whitefish persistence after 100 years.

scholarly journals Analysis of the Relationship Between Defective Sperm Function and the Generation of Reactive Oxygen Species in Cases of Oligozoospermia

1989 ◽  
Vol 10 (3) ◽  
pp. 214-220 ◽  
Author(s):  
R. JOHN AITKEN ◽  
JANE S. CLARKSON ◽  
TIMOTHY B. HARGREAVE ◽  
D. STEWART IRVINE ◽  
FREDERICK C. W. WU
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Sperm Function ◽  
Oxygen Species ◽  
The Relationship
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