Letter from R. B. N. Walker, F. R. G. S., on a Journey up the Ogowe River, West Africa

Walker, Renee B.

doi:10.2307/1799577

Cited by 4 publications

(6 citation statements)

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“…indicate that the forms differ significantly in allele frequencies at several loci, most notably in malate dehydrogenase. Secondly, there is good circumstantial evidence that the benthic and pelagic forms are reproductively isolated by having different spawning seasons and sites (Walker et al, 1988).…”

Section: Discussionmentioning

confidence: 99%

“…If there is any spatial morphological variation along the loch, these functions may not be as successful in samples from other localities. While the full range of morphological measurements were not made during the early years of the ecological study, when samples were obtained from other locations around the loch (Walker et al, 1988), sufficient measurements were m a d e t o indicate close resemblance between individuals of the separate types regardless of sampling site. For example, regression of head length and eye diameter against body length were not found to be significantly different between sites.…”

Section: Discussionmentioning

confidence: 99%

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Morphometric analysis of two ecologically distinct forms of Arctic charr, Salvelinus alpinus (L.), in Loch Rannoch, Scotland

Gardner

Walker

Greer

1988

Journal of Fish Biology

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Gill-netted samples of Arctic cham from Loch Rannoch, Scotland were bimodal when tested by univariate and multivariate morphometric analyses. The separation into two morphs corresponded very closely (95-98%) with fish classified subjectively in the field as benthic or pelagic, based largely on colour differences and ecological observations. The benthic charr had relatively longer heads, larger eyes and more powerful jaws than the pelagic charr. Unlike sympatric niorphotypes described from Scandinavia and Greenland, neither Rannoch morph is dwarfed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Morphometric analysis of two ecologically distinct forms of Arctic charr, Salvelinus alpinus (L.), in Loch Rannoch, Scotland

Gardner

Walker

Greer

1988

Journal of Fish Biology

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“…T h e main weight of dry Bantu feces passed daily is about double that of whites, and the mean time of traversal of digesta is two to three times faster in Bantu than in whites. 31 Experimental evidence suggests that the development of polyps and cancer in the large bowel is dependnet on the fecal stream. Spjut28 has shown that 3, 2-dimethyl-4-aminodiphenyl will produce cancer in rat colons, but not in colons bypassed by colostomy.ls Furthermore, this carcinogen will not pro-(lace cancer in germ-free rats.8 There is also circumstantial evidence showing that the fecal stream influences polyp and carcinoma growth.…”

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confidence: 99%

Polyps and carcinoma of the large bowel in the South African Bantu

Bremner

Ackerman

1970

Cancer

113

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The South African Bantu has an unusual pattern of disease of the large bowel. for all practical purposes he does not have Crohn's diseaseulcerative colitisor diverticulosis. Cancer of the large bowel is of extremely low frequencyand this series of 96 cases was never associated with adenomatous polyps. in 14,000 autopsiesno adenomatous polyps were found. During a 12‐year period at the Baragwanath Hospital (2,000 beds)only 6 adenomatous polyps were submitted to Surgical Pathology. Low incidence of carcinoma of the large bowel is undoubtedly environmental rather than genetic. in direct contrast to the United Statesthe Bantu has an extremely bulky diet and increased frequency of defecation. Bacterial flora may also be important. Because of these factorswe should be concerned with prevention as well as detection of large bowel cancer.

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“…More than half of patients who present with peptic ulcer haemorrhage or perforation report the recent use of these drugs. One quarter to more than half of PPU are taking NSAIDs (14,15) . Appear to be responsible most of these perforations (16) .…”

Section: Discussionmentioning

confidence: 99%

Effect of Ramadan Fasting Upon Perforated Peptic Ulcer Patients: A Descriptive Analysis

Shakor

2018

Kufa Jour. Nurs. Sci.

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Background: Perforated peptic ulcer (PPU) is relatively rare, but life threatening with the mortality varying from 10% to 40%. While common causes of peptic ulcer disease are H. Pylori, increased inadvertent use of NSAIDS, smoking and stress of modern life, the specific etiologic agent cannot be incriminated in the causation of its perforation.Objective: The aim of this study is to evaluate the effect of perforated peptic ulcer in fasting Muslims.Methods: This prospective analysis was conducted for the risk factors associated with perforated peptic ulcer (PPU) in patients attending Surgical Emergency hospital & Sulaimaniyah Teaching Hospital on 312 cases (246 male & 66 females) during the period of one month before Ramadan (Shaban), holy Ramadan and one month after Ramadan (Shawal) for ten successive years from 2006 to 2015. Descriptive analysis and Chi square test was used to find an association between studying variables.Result: The number of PPU per month was higher in Ramadan, 16.6 patients per month vs. 7.3 patients per each other month and also high among group 1 fasting patients. Predisposing factors played a major role in these differences.Conclusion: This study found that the incidence of PPU is relatively high among people who have predisposing factors, including young adults age, but earlier in non-fasting people , male gender, but no difference between the two groups in those using non -steroidal anti-inflammatory drugs, history of dyspepsia. Those patients have previous peptic ulcer disease diagnosed on esophagogastroduodenoscopy more prone to perforation. Long period day after day fasting, but not daytime length duration may increase PPU.Recommendations: This study recommends that the people with these risk factors must be well informed and need special care to avoid such complications. This study also suggests further studies regarding this subject.

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Letter from R. B. N. Walker, F. R. G. S., on a Journey up the Ogowe River, West Africa

Cited by 4 publications

References 0 publications

Morphometric analysis of two ecologically distinct forms of Arctic charr, Salvelinus alpinus (L.), in Loch Rannoch, Scotland

Morphometric analysis of two ecologically distinct forms of Arctic charr, Salvelinus alpinus (L.), in Loch Rannoch, Scotland

Polyps and carcinoma of the large bowel in the South African Bantu

Effect of Ramadan Fasting Upon Perforated Peptic Ulcer Patients: A Descriptive Analysis

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