36 Essai sur les Albuminuries produites par l'Elimination des Substances toxiques, Paris, 1863.
Much difference of opinion exists as to the part played by alcohol in the causation of the various forms of Bright's disease. It was at one time thought that a large proportion of the cases were due to the abuse of this substance. Bright held this view, and Christison attributed from three-fourths to four-fifths of all cases of granular degeneration of the kidneys to the abuse of spirits. The latter considered that not alone in notorious drunkards was this result likely to occur, but even in those accustomed to the moderate daily consumption of spirits with only occasional excesses. This opinion for a long time largely prevailed among English writers. Of late years, however, in consequence partly of the teachings of Anstie and Dickinson, partly of more precise methods of reasoning, the direct causative relation between chronic alcoholism and disease of the kidneys has come to be questioned. Nevertheless, many teachers of authority adhere to the former view. It is, however, more than probable that the action of alcohol is not of itself capable of producing these effects in the absence of other causes, among which are insufficient or improper diet, irregular living, damp dwelling-places, occupations necessitating great or prolonged exposure to cold and wet or such exposure from accidental causes—circumstances to which those who, especially among the poorer classes, are addicted to drink are peculiarly liable. Nor must we overlook the influence of exposure to paludal poison, of lead, and of heredity in the causation of diseases of the kidneys. While alcohol cannot be regarded as the direct exciting cause of acute or chronic nephritis, chronic alcoholism acts as an influence predisposing to the development of these affections in persons otherwise liable to them.
Congestion of the Kidneys.—The general action of alcohol in inducing visceral hyperæmia is aided by its special diuretic action in causing chronic congestion (cyanotic kidney). The kidney is of a dark violet-red hue, slightly enlarged, especially in its transverse diameter, of a consistence firmer than normal, and bleeds freely upon section.
Acute parenchymatous nephritis is of rare occurrence in chronic alcoholism. Of chronic parenchymatous nephritis Bartels37 writes: “I may say that alcoholic excesses, to which the disease is by many attributed, cannot be charged with being the cause of it. None of the cases treated by me occurred in drunkards, and in no instance have I encountered the large white kidney at the autopsies of notorious drinkers, of which I have made a not inconsiderable number during my many years' active hospital service.” The same author in discussing the etiology of chronic interstitial nephritis (contracted kidney) enters a protest against the view which is widespread in England that the abuse of spirituous liquors favors the development of the genuine contracted kidney. He says: “In the first place, among all the patients whom I have treated, three only were brandy-drinkers to any notorious excess, while by far the greater number who were affected with this complaint had lived remarkably abstemious lives. In the second place, throughout my twenty-five years of active service as a hospital physician I have had the most abundant opportunity of watching the consequences of intemperance, both at the bedside and upon the post-mortem table; yet these three cases have hitherto been the only ones in which I have found atrophied kidneys in the bodies of habitual drunkards.” Baer also testifies to the infrequency of contracted kidneys among drunkards.
37 Ziemssen's Cyclopædia of Medicine.
Fürstner detected by very exact testing a trace of albumen in the urine of almost all cases of delirium tremens examined. Its presence was, however, transient, and appeared to be not associated with structural changes in the kidneys.38
38 Berliner klin. Wochenschrift, 1876, No. 28.
Fatty infiltration and fatty degeneration of the kidneys occur in chronic alcoholism, the former as part of the general fat accumulation, the latter as a result of the general nutritive disturbances.
Amyloid degeneration is rare, and can in no case be ascribed to the direct action of alcohol.