1
122 fortune, the Apothecaries Hall, and a great deal more of old London were swept away by fire during a September weekend in 1666. But the Society which he helped to found has endured. ULCERATIVE COLITIS AND CHRONIC LIVER DISEASE THE association of ulcerative colitis with hepatic cirrhosis poses some intriguing questions. Are they causally related, and, if so, does cirrhosis lead to colitis, or colitis to cirrhosis ? It is always difficult with problems of this kind for any one group of investigators to assemble enough data. Even a unit as highly specialised in the study of cirrhosis as that of Prof. Sheila Sherlock at the Royal Free Hospital, London, could muster only 22 cases of colitis with chronic hepatic disease in the five years from 1959 to 1963,1 but their studies have led to some interesting conclusions. The incidence of ulcerative colitis in the general population is only about 0-1%, but in their series of over 500 cases of liver-disease it was about 4%, strongly sug- gesting that the two conditions were related. Which came first is less obvious, but since the colitis was recognised first in 15 of the 22 cases, involvement of the liver may well have been secondary to disease of the colon. Histological studies of the affected livers were revealing. Of the 22 patients, 20 had hepatic cirrhosis-in 19 of them apparently postnecrotic. This points to the nutritional impairment associated with ulcerative colitis as a causative factor. Although there is little evidence that in man nutritional deficiency alone can cause hepatic necrosis with consequent cirrhosis, nutrition is an important factor in the pathogenesis of hepatic disorders. The resistance of the liver to a variety of toxic agents, biological as well as chemical, is largely determined by the general state of nutrition and especially the intake of protein. Some at least of the cases of postnecrotic cirrhosis might therefore be attributed to attacks of viral hepatitis in patients nutritionally depleted by their ulcerated colons. In more than half of a control group, cirrhosis did not start until after the age of forty-five years; but among the 22 patients with cirrhosis and colitis, the cirrhosis started in 12 under the age of twenty-six, and in no less than 19 under forty-six. Willocx and Isselbacher 3 found 7 cases of colitis amongst 33 patients with cirrhosis under the age of forty, but not a single case amongst 143 over that age. The reasons are not yet known, but the higher incidence of autoantibodies in juvenile than in adult colitis 4 5 may be one. On the other hand, colitis and postnecrotic cirrhosis might have a common cause. Both conditions could arise from autoantibodies directed against the colon and the liver. Some people appear to form such autoamibodies more readily than others, and in greater variety. The cirrhosis associated with colitis seems to be usually of the postnecrotic type-in which evidence of autoimmunity is especially common.’ The lymphocytes and plasma-cells 1. Holdsworth, C. D., Hall, E. W., Dawson, A. M., Sherlock, S. Q. Jl Med. 1965, 34, 211. 2. Himsworth, H. P. The Liver and its Diseases. Oxford, 1947. 3. Willocx, R. G., Isselbacher, K. J. Am. J. med. 1961, 30, 185. 4. Broberger, O., Perlmann, P. J. exp. Med. 1959, 110, 657. 5. Asherson, G. L., Broberger, O. Br. med. J. 1961, i, 1429. 6. Glynn, L. E., Holborow, E. J. Autoimmunity and Disease. Oxford, 1965. 7. MacKay, I. M., Wood, I. J. in Progress in Liver Diseases (edited by H. Popper and F. Schaffner); p. 39. New York, 1961. often described in these cases also suggest some kind of immune reaction; but their presence does not, of course, indicate the origin of the antigen to which they are pre- sumably reacting, which could as well be exogenous-e.g., a virus-as autogenous. Lastly, a diseased liver might harm the colon, although the extreme rarity of colitis in alcoholic cirrhosis excludes any simple relationship such as a predisposition to ulcera- tion because of the vascular stasis of portal hypertension. Lesions in the colon have, however, been described in fatal cases of viral hepatitis,8 and while their pathogenesis is still unexplained colitis may sometimes be secondary to hepatic disease. ADRENALINE AND ISOPRENALINE IN MYOCARDIAL FAILURE ISOPRENALINE has complex effects on the myocardium. In the normal heart it produces a decrease in left ventricu- lar volume, an increased stroke volume, and an increased rate of ejection. Myocardial oxygen consumption is increased.9 Dynamic obstruction of the left ventricle may be produced in the anatomically normal heart.10 11 In this issue Prof. Mary Lockett discusses the effects of isoprenaline in experimentally induced myocardial failure. This work was stimulated by an account 12 of three patients with status asthmaticus who died suddenly after injec- tions of adrenaline given soon after they had taken isoprenaline. Unfortunately no details of the doses of adrenaline or routes of administration of isoprenaline were given. Professor Lockett has compared the effects of isoprenaline hydrochloride and orciprenaline in heart- lung preparations in which she varied the load on the heart. She found that a fifteenth of a dose of isoprenaline without deleterious effect on healthy hearts was sufficient to produce cardiac arrest in the failing hearts. It was about six times as potent as orciprenaline in all prepara- tions. She suggests that adrenaline increases the load on the heart by increasing venous return and so provoking a situation in which isoprenaline may produce cardiac arrest. She does not, however, comment on the cardiac anoxia associated with status asthmaticus, which may be an important contributing factor. The possible incompatability between adrenaline and isoprenaline in patients with limited cardiac reserve has been known and taught for many years, but it is evidently not yet as widely recognised as it should be. McManis 11 rightly insists that they should not be given together, and that patients should be asked whether they have recently used preparations of isoprenaline and orciprenaline before an injection of adrenaline is given. Although Professor Lockett does not describe the effects of blocking &bgr;-adren- efgic receptors with an agent such as propranolol, it would seem reasonable to give one intravenously if this catastrophe occurs. Lord BROCK has been re-elected president of the Royal College of Surgeons of England. He has chosen as his title Baron Brock of Wimbledon in the London borough of Merton. Prof. VTIILSON SMITH, who held the chair of bacteriology at University College Hospital Medical School, London, from 1946 to 1960, died on July 10. 8. Lucke, B. Am. J. Path. 1944, 20, 471. 9. Krasnow, N., Rolett, E. L., Yurchak, P. M., Hood, W. B., Gorlin, R. Am. J. Med. 1964, 37, 514. 10. de Bono, A. H., Proctor, E., Brock, R. Guy’s Hosp. Rep. 1965, 114, 4. 11. See Lancet, 1965, i, 1261. 12. McManis, A. G. Med. J. Aust. 1964, ii, 76.

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Page 1: ADRENALINE AND ISOPRENALINE IN MYOCARDIAL FAILURE

122

fortune, the Apothecaries Hall, and a great deal more ofold London were swept away by fire during a Septemberweekend in 1666. But the Society which he helped tofound has endured.

ULCERATIVE COLITISAND CHRONIC LIVER DISEASE

THE association of ulcerative colitis with hepaticcirrhosis poses some intriguing questions. Are theycausally related, and, if so, does cirrhosis lead to colitis, orcolitis to cirrhosis ? It is always difficult with problems ofthis kind for any one group of investigators to assembleenough data. Even a unit as highly specialised in the studyof cirrhosis as that of Prof. Sheila Sherlock at the RoyalFree Hospital, London, could muster only 22 cases ofcolitis with chronic hepatic disease in the five years from1959 to 1963,1 but their studies have led to some interestingconclusions.

The incidence of ulcerative colitis in the generalpopulation is only about 0-1%, but in their series of over500 cases of liver-disease it was about 4%, strongly sug-gesting that the two conditions were related. Which camefirst is less obvious, but since the colitis was recognisedfirst in 15 of the 22 cases, involvement of the liver may wellhave been secondary to disease of the colon.

Histological studies of the affected livers were revealing.Of the 22 patients, 20 had hepatic cirrhosis-in 19 of themapparently postnecrotic. This points to the nutritionalimpairment associated with ulcerative colitis as a causativefactor. Although there is little evidence that in mannutritional deficiency alone can cause hepatic necrosiswith consequent cirrhosis, nutrition is an important factorin the pathogenesis of hepatic disorders. The resistance ofthe liver to a variety of toxic agents, biological as well aschemical, is largely determined by the general state ofnutrition and especially the intake of protein. Some atleast of the cases of postnecrotic cirrhosis might thereforebe attributed to attacks of viral hepatitis in patientsnutritionally depleted by their ulcerated colons.

In more than half of a control group, cirrhosis did notstart until after the age of forty-five years; but among the22 patients with cirrhosis and colitis, the cirrhosis startedin 12 under the age of twenty-six, and in no less than 19under forty-six. Willocx and Isselbacher 3 found 7 casesof colitis amongst 33 patients with cirrhosis under the ageof forty, but not a single case amongst 143 over that age.The reasons are not yet known, but the higher incidenceof autoantibodies in juvenile than in adult colitis 4 5 maybe one.

On the other hand, colitis and postnecrotic cirrhosismight have a common cause. Both conditions could arisefrom autoantibodies directed against the colon and theliver. Some people appear to form such autoamibodiesmore readily than others, and in greater variety. Thecirrhosis associated with colitis seems to be usually of thepostnecrotic type-in which evidence of autoimmunity isespecially common.’ The lymphocytes and plasma-cells

1. Holdsworth, C. D., Hall, E. W., Dawson, A. M., Sherlock, S. Q. JlMed. 1965, 34, 211.

2. Himsworth, H. P. The Liver and its Diseases. Oxford, 1947.3. Willocx, R. G., Isselbacher, K. J. Am. J. med. 1961, 30, 185.4. Broberger, O., Perlmann, P. J. exp. Med. 1959, 110, 657.5. Asherson, G. L., Broberger, O. Br. med. J. 1961, i, 1429.6. Glynn, L. E., Holborow, E. J. Autoimmunity and Disease. Oxford,

1965.7. MacKay, I. M., Wood, I. J. in Progress in Liver Diseases (edited by

H. Popper and F. Schaffner); p. 39. New York, 1961.

often described in these cases also suggest some kind ofimmune reaction; but their presence does not, of course,indicate the origin of the antigen to which they are pre-sumably reacting, which could as well be exogenous-e.g.,a virus-as autogenous.

Lastly, a diseased liver might harm the colon, althoughthe extreme rarity of colitis in alcoholic cirrhosis excludesany simple relationship such as a predisposition to ulcera-tion because of the vascular stasis of portal hypertension.Lesions in the colon have, however, been described infatal cases of viral hepatitis,8 and while their pathogenesisis still unexplained colitis may sometimes be secondaryto hepatic disease.

ADRENALINE AND ISOPRENALINE

IN MYOCARDIAL FAILURE

ISOPRENALINE has complex effects on the myocardium.In the normal heart it produces a decrease in left ventricu-lar volume, an increased stroke volume, and an increasedrate of ejection. Myocardial oxygen consumption isincreased.9 Dynamic obstruction of the left ventricle maybe produced in the anatomically normal heart.10 11

In this issue Prof. Mary Lockett discusses the effects ofisoprenaline in experimentally induced myocardial failure.This work was stimulated by an account 12 of three patientswith status asthmaticus who died suddenly after injec-tions of adrenaline given soon after they had taken

isoprenaline. Unfortunately no details of the doses ofadrenaline or routes of administration of isoprenalinewere given. Professor Lockett has compared the effects ofisoprenaline hydrochloride and orciprenaline in heart-

lung preparations in which she varied the load on theheart. She found that a fifteenth of a dose of isoprenalinewithout deleterious effect on healthy hearts was sufficientto produce cardiac arrest in the failing hearts. It wasabout six times as potent as orciprenaline in all prepara-tions. She suggests that adrenaline increases the load onthe heart by increasing venous return and so provokinga situation in which isoprenaline may produce cardiacarrest. She does not, however, comment on the cardiacanoxia associated with status asthmaticus, which may bean important contributing factor.The possible incompatability between adrenaline and

isoprenaline in patients with limited cardiac reserve hasbeen known and taught for many years, but it is evidentlynot yet as widely recognised as it should be. McManis 11rightly insists that they should not be given together, andthat patients should be asked whether they have recentlyused preparations of isoprenaline and orciprenaline beforean injection of adrenaline is given. Although ProfessorLockett does not describe the effects of blocking &bgr;-adren-efgic receptors with an agent such as propranolol, itwould seem reasonable to give one intravenously if thiscatastrophe occurs.

Lord BROCK has been re-elected president of the RoyalCollege of Surgeons of England. He has chosen as his titleBaron Brock of Wimbledon in the London borough ofMerton.

Prof. VTIILSON SMITH, who held the chair of bacteriology atUniversity College Hospital Medical School, London, from1946 to 1960, died on July 10.8. Lucke, B. Am. J. Path. 1944, 20, 471.9. Krasnow, N., Rolett, E. L., Yurchak, P. M., Hood, W. B., Gorlin, R.

Am. J. Med. 1964, 37, 514.10. de Bono, A. H., Proctor, E., Brock, R. Guy’s Hosp. Rep. 1965, 114, 4.11. See Lancet, 1965, i, 1261.12. McManis, A. G. Med. J. Aust. 1964, ii, 76.