7 research outputs found
Complications After Laparoscopic and Conventional Cholecystectomy: A Comparative Study
The growing popularity of laparoscopic cholecystectomy (LC) has made extensive series
comparing laparoscopic and conventional cholecystectomy in a prospective, randomized way
nearly impossible. To evaluate LC we compared retrospectively 800 laparoscopic with 748
conventional cholecystectomies (CC). Of the 800 LC, 10 (1.2%) were converted to laparotomy.
6 conversions were related to aberrant anatomical features or features making dissection very
difficult, 4 conversions were due to complications. There were 5 (0, 6%) intraoperative complications
during LC and 4 (0.5%) during CC. Postoperative morbidity was 2.1% (n = 17) after LC
and 3.7% (n = 28) after CC. Particularly the incidence of wound problems was only 0.5% (n = 4)
after LC while it was 1.3% (n = 10) after CC. Overall morbidity was 2.7% (n = 22) for LC and
4.2% (n = 32) for CC. Mortality rate after CC was 0.4% (n = 3), there were no deaths after LC.
Common bile duct-injury rate was 0.2% (n = 2) for both groups. Complication rates after LC
have been rapidly decreasing with growing experience. Laparoscopic cholecystectomy can safely
be performed by appropriately trained surgeons in more than 90% of patients suffering from
gallbladder disease. The low morbidity and mortality together with the significant advantages to
patient recovery makes laparoscopic cholecystectomy the treatment of choice for symptomatic
cholecystolithiasis
Genomes of Stigonematalean Cyanobacteria (Subsection V) and the Evolution of Oxygenic Photosynthesis from Prokaryotes to Plastids
Dagan T, Roettger M, Stucken K, et al. Genomes of Stigonematalean Cyanobacteria (Subsection V) and the Evolution of Oxygenic Photosynthesis from Prokaryotes to Plastids. Genome Biology And Evolution. 2013;5(1):31-44.Cyanobacteria forged two major evolutionary transitions with the invention of oxygenic photosynthesis and the bestowal of photosynthetic lifestyle upon eukaryotes through endosymbiosis. Information germane to understanding those transitions is imprinted in cyanobacterial genomes, but deciphering it is complicated by lateral gene transfer (LGT). Here, we report genome sequences for the morphologically most complex true-branching cyanobacteria, and for Scytonema hofmanni PCC 7110, which with 12,356 proteins is the most gene-rich prokaryote currently known. We investigated components of cyanobacterial evolution that have been vertically inherited, horizontally transferred, and donated to eukaryotes at plastid origin. The vertical component indicates a freshwater origin for water-splitting photosynthesis. Networks of the horizontal component reveal that 60% of cyanobacterial gene families have been affected by LGT. Plant nuclear genes acquired from cyanobacteria define a lower bound frequency of 611 multigene families that, in turn, specify diazotrophic cyanobacterial lineages as having a gene collection most similar to that possessed by the plastid ancestor
Genomes of Stigonematalean Cyanobacteria (Subsection V) and the Evolution of Oxygenic Photosynthesis from Prokaryotes to Plastids
Dagan T, Roettger M, Stucken K, et al. Genomes of Stigonematalean Cyanobacteria (Subsection V) and the Evolution of Oxygenic Photosynthesis from Prokaryotes to Plastids. Genome Biology And Evolution. 2013;5(1):31-44.Cyanobacteria forged two major evolutionary transitions with the invention of oxygenic photosynthesis and the bestowal of photosynthetic lifestyle upon eukaryotes through endosymbiosis. Information germane to understanding those transitions is imprinted in cyanobacterial genomes, but deciphering it is complicated by lateral gene transfer (LGT). Here, we report genome sequences for the morphologically most complex true-branching cyanobacteria, and for Scytonema hofmanni PCC 7110, which with 12,356 proteins is the most gene-rich prokaryote currently known. We investigated components of cyanobacterial evolution that have been vertically inherited, horizontally transferred, and donated to eukaryotes at plastid origin. The vertical component indicates a freshwater origin for water-splitting photosynthesis. Networks of the horizontal component reveal that 60% of cyanobacterial gene families have been affected by LGT. Plant nuclear genes acquired from cyanobacteria define a lower bound frequency of 611 multigene families that, in turn, specify diazotrophic cyanobacterial lineages as having a gene collection most similar to that possessed by the plastid ancestor