Effect of kerosene and its soot on the chrysotile-mediated toxicity to the rat alveolar macrophages.

In order to examine the pulmonary toxicity of kerosene oil and its combustion product (soot) in asbestos-exposed rats, various biochemical and chemical parameters were assayed. Treatment of rats with a single intratracheal dose of chrysotile asbestos (5 mg) and kerosene (50 microliters) or its soot (5 mg) in combination led to an increased number of pulmonary alveolar macrophages (PAM), elevated levels of hydrogen peroxide, and thiobarbituric acid-reacting substances, alterations in the activities of primary (glutathione peroxidase and catalase) and secondary (glutathione reductase and glucose-6-phosphate dehydrogenase) endogenous antioxidant enzymes, and depletion in the levels of glutathione in PAM compared to the chrysotile, kerosene, or soot alone. These changes may indicate the generation of oxidative stress in the macrophages. The resulting oxidative stress may be subsequently critical in collapsing the cellular membrane, which may change the cell membrane permeability and may also damage the phagolysosomal membrane, thereby releasing the membrane bound enzymes as indicated by an increased leakage of intracellular acid phosphatase and lactate dehydrogenase. The injury to macrophages may trigger events that lead to lung fibrosis and/or malignancies in the exposed animals. This study may be helpful in understanding the etiology of certain clinical and pathological disorders in the population exposed simultaneously to both asbestos and kerosene or its combustion products.

Serum adenosine deaminase in pulmonary tuberculosis, malignancy and non-tubercular respiratory diseases.

The study has been conducted to find out the serum ADA levels in 120 patients with various pulmonary diseases which included patients with tubercular pleural effusion (n = 86), lung cancer (n = 10) and patients with non-tubercular pulmonary diseases like pneumonia, etc (n = 24). Twenty healthy individuals served as control subjects. The mean (+/- SD) of ADA activity was 23.38 (4.47), 7.29 (1.08), 12.71 (1.95) and 2.23 (1.00) units/litre in tuberculosis, malignancy, non-tubercular pulmonary diseases and healthy controls respectively with significant difference between each other (P less than 0.001). Patients with tuberculosis (100%) fall in 97% sensitivity range with a lower cut off limit at 17 units/litre ADA activity, while for malignancy and non-tubercular respiratory diseases, the sensitivity was 90% and 83% respectively. Within the sensitivity limits, the serum ADA activity can be used for the differential diagnosis of pulmonary diseases.

Effect of feeding black gram (Phaseolus mungo) on serum lipids of normal & diabetic guineapigs.

When normal and alloxan-induced diabetic guineapigs were given whole seed diet of Phaseolus mungo (black gram) for 4 wk, the blood glucose, serum total lipids, triglycerides and esterified fraction of cholesterol were significantly lowered, while serum phospholipid was unaltered. Total cholesterol/phospholipid ratio also decreased in normal as well as diabetic animals indicating the antiatherogenic nature of P. mungo.

Hypoglycaemic and hypolipaemic effects of Cyamopsis tetragonoloba (guar) in normal and diabetic guinea pigs.

Information available in literature is contradictory regarding the glycaemic and cholesterolaemic activities of various legume proteins. Present work deals with the study of the effect of 'Guar' feeding on serum total lipids, free and esterified cholesterol, triglycerides and phospholipids. Normal and alloxan induced diabetic guinea pigs were kept on the whole seed diet of 'Guar' for four weeks. Blood sugar and total lipid levels were found to be decreased significantly in normal and as well as diabetic animals; free and esterified cholesterol levels were also observed to be lowered significantly in normals, whereas esterified fraction alone was found to be lowered in diabetics. Significant fall in the levels of other lipids i.e., triglycerides, phospholipids and total lipids was also noticed.

Circadian variations of the absolute eosinophil count and serum histaminase activity in tropical pulmonary eosinophilia.

Nine healthy volunteers and 25 tropical pulmonary eosinophilia (TPE) patients were used to study circadian variations of absolute eosinophil count (AEC) and serum histaminase activity (SHA). A marked circadian variation was found in AEC for healthy volunteers and TPE patients with the worst symptoms in the late evening and morning hours only; no rhythm could be detected in SHA for healthy subjects. However, TPE patients with worst symptoms in the late evening hours did exhibit a significant rhythm in SHA. Increased SHA in all TPE patients at all time-points of the 24 hour day-night cycle, irrespective of the worsening hours of symptoms in comparison to healthy controls, could be due to increased histamine production in such situations.

Cholestasis in amoebic liver abscess.

Two hundred and thirty six patients with amoebic liver abscess were investigated for cholestasis, its mechanism and the natural course of the disease. Cholestasis was seen in 29% of cases and it presented with some unusual features: it was frequently seen in young men (mean age 38.6 +/- 6.3 years) (87%) with acute onset (69%) and was associated with signs of peritonism, or peritonitis (28%), splenomegaly (12%) and hepatic encephalopathy (coma 13%). Raised diaphragm was seen only in 37% of cases. Alcoholism may have contributed to the cholestasis in 37% of cases. Multiple (43%) and single (32%) large liver abscesses, especially on the inferior surface of the liver (25%), were common in jaundiced patients with amoebic liver abscess, while size and number of abscesses were directly related to the raised serum bilirubin concentrations. Bromsulphalein excretion (BSP) was found to be significantly reduced (p less than 0.01) in patients with jaundice (60%). Retrograde injection of contrast media into the common bile duct during six necropsies showed compression by amoebic liver abscess on the hepatic ducts. The mortality (43%) and the complications were significantly higher (p less than 0.001) in patients with jaundice. The aspiration/surgical drainage of amoebic liver abscess together with a combination of metronidazole and di-iodohydroxyquinoline was more effective than either metronidazole alone, or dehydroemetine with chloroquine.

Hepato-protective role of indigenous drug Liv-52 in lepromatous leprosy.

The present study incorporates a study of 42 cases of lepromatous leprosy for hepatic involvement and role of indigenous herbal preparation in protecting the liver in leprosy. Liver was enlarged in 32 cases which was tender in 8 patients. Alteration in liver function irrespective of extent and duration of the illness (3 months to 10 years with mean duration of illness = 2 years 5 months) was mainly seen as uniform elevation of serum proteins (6.2-9.2 gms%, mean = 7.5 gms%) with hypoalbuminaemia (2.0-4.4 gms%, mean = 2.9 gms%). Highest level of serum bilirubin of 1.6 mg% was detected in 6 cases, emphasising the presence of leprous hepatitis. Raised level of serum transaminases (SGOT = 65.2 IU, SGPT = 78.7 IU) were proportionate to the liver and muscle involvement. Presence of characteristic granulomata in the liver around the central vein, periportal area and even distribution at various locations in the liver lobules were the most significant changes in 12 out of 15 liver tissues. Acid fast M. leprae were demonstrated in 12 patients. The present work emphasises the detection of hepatic involvement in the early stage of the disease and hepato-protective role of indigenous drug Liv-52 in lepromatous leprosy which usually lead to dreaded mutilated complications in the body.

Diabetic status in leprosy.

The diabetic status of the local Jhansi patients (120 cases) was established before and after antileprosy treatment. Control studies were performed in normal healthy subjects (50 persons) without family history of diabetes mellitus. Random normals showed an incidence of diabetes only 2%, while leprosy patients (94 males and 26 females) had incidence of diabetic status of 14.2%. The highest incidence (19.3%) of diabetes was in lepromatous leprosy and lowest incidence (6.4%) in tuberculoid leprosy patients. Repeated studies in leprosy after treatment showed not only clinical improvement for leprosy but also disappearance of the chemical and latent diabetes mellitus and lowering of blood sugar levels in manifest diabetes mellitus. Incidentally it was noted that 'diabetic status' was worse among males (82.3%) and with advancing age. Association and improvement of diabetic status with specific treatment would tentatively suggest that Mycobacterium leprae lesions are not confined to skin alone but somehow also related to carbohydrate metabolism. A careful management of the chemical and latent diabetes may help in clinical management of leprosy too.

Serum calcium and magnesium in leprosy.

Serum calcium and magnesium were studied in 70 leprosy patients and 25 normal healthy individuals. An attempt has been made in this study to find out if there is any correlation between the clinical and pathological status of the disease and serum calcium and magnesium levels in the blood. Serum calcium was found to be significantly decreased in lepromatous leprosy (Ca=8.42+/-0.7 mg%, P less than 0.001) and dimorphous leprosy (Ca=8.68+/-0.94 mg%, P less than 0.05) while it was normal in tuberculoid leprosy (Ca=9.14+/-2.12, P less than 0.05). The decrease in serum magnesium level was highly significant in all clinical types of leprosy (Mg=1.08+/-0.29, P less than 0.001).

Diabetic status in leprosy

The diabetic status of the local jhansi patients (120 cases) was established before and after antileprosy treatment control studies were performed in normal healthy subjects (50 person) without family history of diabetes mellitus. Random normals showed an incidence of diabetes only 2% while leprosy patients (94 males and 26 females) had incidence of diabetic status of 14.2%. The highest incidence (19.3%) of diabetes was in lepromatous leprosy and lowest incidence (6,4%) in tuberculoid leprosy patients. Repeated studies in leprosy after treatment showed not only clinical improvement for leprosy but also disappearance of the chemical and latent diabetes mellitus and lowering of blood sugar levels in manifest diabetes mellitus

Diabetic Status in Psoriasis.

Sixty five uncomplicated cases of psoriasis were subjected to standard and cortisone primed glucose tolerance test to study the association of of the disease with diabetes mellitus. The peak incidence of psoriasis was in early adulthood (26.1%). The c lesions were mainly as with micaceous, loosely adherent scales covering them (53.9%). Im-paired glucose tolerance test was detected in 19 (27.7%) cases, of whom )-5%, m4. 12.3% latent and 13.8% latentcfwmicaf Les. Elevep out of 18 cases with glucose tolerance had extensive cutaneous lesions ( B). Ten out of 18 cases had glucose tolerance curve with sharp rise followed first by lag phase and then decline phase with blood sugar remaining above fasting level. The incidence of diabetes in psoriasis was more in, persons above 40 years of age (35.7%).