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- Darelius, A, et al.
(author)
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Efficacy of salpingectomy at hysterectomy to reduce the risk of epithelial ovarian cancer: a systematic review.
- 2017
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In: BJOG : an international journal of obstetrics and gynaecology. - 1471-0528 .- 1471-0528. ; 124:6, s. 880-889
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Research review (peer-reviewed)abstract
- It has been argued that salpingectomy would reduce the risk of epithelial ovarian cancer (EOC), based on the theory of the tube being the site of origin.To conduct a systematic review of 'salpingectomy' associated with ovarian cancer risk and 'salpingectomy with concomitant hysterectomy' on outcomes of complications including endocrine function.A comprehensive search was conducted in PubMed, Embase, and the Cochrane library.Original studies and systematic reviews were eligible.Each article was quality assessed. Data were extracted and, when possible, pooled in meta-analyses. The certainty of evidence across studies was evaluated using GRADE.Of 844 articles found, 11 were included. No study evaluated risk reduction for EOC after salpingectomy in conjunction with hysterectomy. Two retrospective studies reported a reduced ovarian cancer risk after indicated salpingectomy, compared with no surgery: adjusted hazard ratio 0.65 (95% confidence interval, 95% CI 0.52-0.81) and adjusted odds ratio 0.58 (95% CI 0.36-0.95). Complications did not differ between groups with or without salpingectomy, but were non-systematically reported. Ovarian endocrine function, measured with surrogate outcomes, did not differ at short-term follow-up in randomised or observational studies. The certainty of evidence was very low or low for all outcomes.There is currently insufficient evidence to state that opportunistic salpingectomy reduces the risk of EOC. The impact on long-term endocrine function is unknown. The heterogeneity in results and identified knowledge gaps stress the need for a prospective trial.Insufficient evidence for prophylactic removal of the fallopian tubes for risk reduction of ovarian cancer.
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| 2. |
- Silvano, Alessandro, et al.
(author)
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Observing Antarctic Bottom Water in the Southern Ocean
- 2023
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In: Frontiers in Marine Science. - 2296-7745. ; 10
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Research review (peer-reviewed)abstract
- Dense, cold waters formed on Antarctic continental shelves descend along the Antarctic continental margin, where they mix with other Southern Ocean waters to form Antarctic Bottom Water (AABW). AABW then spreads into the deepest parts of all major ocean basins, isolating heat and carbon from the atmosphere for centuries. Despite AABW's key role in regulating Earth's climate on long time scales and in recording Southern Ocean conditions, AABW remains poorly observed. This lack of observational data is mostly due to two factors. First, AABW originates on the Antarctic continental shelf and slope where in situ measurements are limited and ocean observations by satellites are hampered by persistent sea ice cover and long periods of darkness in winter. Second, north of the Antarctic continental slope, AABW is found below approximately 2 km depth, where in situ observations are also scarce and satellites cannot provide direct measurements. Here, we review progress made during the past decades in observing AABW. We describe 1) long-term monitoring obtained by moorings, by ship-based surveys, and beneath ice shelves through bore holes; 2) the recent development of autonomous observing tools in coastal Antarctic and deep ocean systems; and 3) alternative approaches including data assimilation models and satellite-derived proxies. The variety of approaches is beginning to transform our understanding of AABW, including its formation processes, temporal variability, and contribution to the lower limb of the global ocean meridional overturning circulation. In particular, these observations highlight the key role played by winds, sea ice, and the Antarctic Ice Sheet in AABW-related processes. We conclude by discussing future avenues for observing and understanding AABW, impressing the need for a sustained and coordinated observing system.
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