Prognostic value of muscle mass assessed by DEXA in elderly hospitalized patients.

OBJECTIVES: To analyze the prognostic value of lean mass measured by DEXA and to compare it with lean muscle mass assessed by anthropometrics, calf circumference, subjective assessment and with physical muscle function tests in elderly hospitalized patients. METHODS: We study 187 hospitalized patients aged ≥65 years. We assessed nutrition by anthropometrics, mid arm muscle area, triceps skinfold and calf circumference, by subjective nutritional assessment and by DEXA, lean and fat mass and bone mineral density (BMD); muscle function by handgrip strength, gait speed, standing balance and stand-up test; disability and activities of daily living and the clinical frailty score; and comorbidity by Charlson index. Outcomes were assessed by mortality at 100 days and long-term follow up. RESULTS: Male sex showed higher comorbidity and mortality although females were older, with decreased muscle mass and function, disabled and frailer. Long term mortality was also related to decreased lean mass evaluated by subjective assessment, midarm anthropometry, calf circumference and DEXA (appendicular lean and fat mass and BMD); muscle function impairment assessed by gait speed, standing balance and stand-up test; frailty; disability and comorbidity. Variables with long term independent predictive value were comorbidity, inability to perform any of the muscle function tests: gait speed, standing balance and stand-up; subjective nutritional score, appendicular lean mass under the 10th percentile and male sex. CONCLUSIONS: Females are older and frailer but with lower comorbidity; they showed a better survival. The best predictive mortality factor was comorbidity, but DEXA appendicular lean mass under the 10th percentile showed an independent and high predictive value on mortality.

Prognostic value of physical function tests and muscle mass in elderly hospitalized patients. A prospective observational study.

AIM: To determine the prognostic value for mortality of physical function tests, muscle mass loss, disability and frailty in elderly hospitalized patients. METHODS: We prospectively included 298 hospitalized patients aged >60 years (152 men and 146 women). We assessed comorbidity using the Charlson Comorbidity Index; nutrition by body mass index, midarm muscle area and subjective nutritional score; physical muscle function by handgrip strength, gait speed, standing balance and stand up test; disability using the Barthel test and activities of daily living; frailty by the clinical frailty scale and Fried frailty index; and cognitive impairment by the Pfeiffer test. We assessed 100-day and long-term mortality. RESULTS: We found a high prevalence of malnutrition, comorbidity, cognitive impairment, physical function impairment, disability and frailty. Mortality at 100 days was 15.1%, with a long-term median survival of 989 days. Mortality was significantly related to age, comorbidity, nutritional status, physical function, disability and frailty. Serum vitamin D3 levels were not related to mortality. Independent prognostic value for long-term mortality was shown by: (i) incapacity to carry out any of the walking, stand up and standing balance tests; (ii) male sex; (iii) aged >80 years; (iv) impaired handgrip strength or gait speed; (v) Charlson Comorbidity Index ≥1; and (6) impaired muscle mass of subjective nutritional score. CONCLUSIONS: In elderly hospitalized patients, there is an important role of muscle regarding prognosis, mainly related to physical function, but also and independently regarding muscle mass. Geriatr Gerontol Int 2018; 18: 57-64.

Prognostic value of acute delirium recovery in older adults.

AIM: To analyze the prognostic impact of short-term changes in the intensity of delirium in association or not with sepsis. We also aimed to analyze if s100B, a serum protein derived from astrocytes related to cerebral damage, could be a marker of delirium or sepsis. METHODS: We included 47 patients with acute delirium and sepsis, 36 with delirium and no evidence of infection, and 36 patients with sepsis without delirium. The diagnosis of delirium was established by the Confusion Assessment Method. To evaluate delirium, we recorded the following characteristics on the first and third day after admission: level of consciousness, orientation, attention, hallucinations, psychomotor activity, language and disorganized thinking. RESULTS: In 53 patients, delirium improved during hospitalization with 3.8% of mortality, whereas in the 30 patients in which delirium did not improve or worsened, 50% died during hospitalization. The improvement on the third day of consciousness, orientation, attention and disorganized thinking was related to a better long-term survival. s100B and inflammatory markers tumor necrosis factor-α, interleukin-6, interleukin-10 and interferon-γ were increased in patients with sepsis and confusion when compared with control participants; furthermore, s100B, interleukin-6 and interferon-γ were increased in septic patients without confusion, but also in delirious patients without sepsis. CONCLUSIONS: The main factor related to mortality was the recovery from delirium during hospitalization. We found increased s100B serum levels in patients with delirium, but also in septic patients without delirium. This increase was not related to mortality. Geriatr Gerontol Int 2017; 17: 1161-1167.

[Prognostic value of serum homocysteine levels in elderly hospitalized patients]. / VALOR PRONÓSTICO DE LA HOMOCISTEÍNA SÉRICA EN ENFERMOS ANCIANOS HOSPITALIZADOS EN UN SERVICIO DE MEDICINA INTERNA.

BACKGROUND AND OBJECTIVES: Increased serum homocysteine levels are related to vascular disease and increased mortality. The decrease of homocysteine is also associated with a worse prognosis in patients on hemodialysis; however, this relationship has not been well studied in other patients. Our goal is to study the prognosis of increased and decreased serum homocysteine levels in elderly patients admitted to a general internal medicine unit. PATIENTS AND METHODS: We included 239 patients (121 women and 118 men; mean age, 78 years) in which we determined serum homocysteine levels and study its relationship with vascular risk factors, vascular disease: ischemic heart disease, ischemic stroke and peripheral arterial disease, nutritional status, creatinine, albumin, folate and B12 vitamin. RESULTS: Mortality during hospitalization of patients with homocysteine levels below 9 µmol/l was 33%, 9% for those with levels between 9 and 20 µmol/l and 17% for those with levels above 20 µmol/l. Low homocysteine values were related to increased comorbidity, higher degree of weight loss and decreased serum albumin levels. In a survival analysis using Kaplan-Meier curves, increased homocysteine was associated with increased mortality especially in patients with vascular disease. CONCLUSION: In elderly patients with multiple comorbidities, both decreased and increased serum homocysteine levels are associated with increased mortality.

Antecedentes y objetivos: el aumento de la homocisteína se relaciona con la enfermedad vascular y un incremento de la mortalidad. La disminución de la homocisteína se asocia también con un peor pronóstico en enfermos en hemodiálisis; sin embargo, esta relación no ha sido bien estudiada en otro tipo de pacientes. El objetivo del estudio fue analizar el valor pronóstico de los niveles de homocisteína en enfermos ancianos pluripatológicos ingresados en un servicio general de medicina interna Pacientes y métodos: estudiamos a 239 pacientes (121 mujeres y 118 varones; edad media: 78 años) en los que determinamos la homocisteína sérica y la relacionamos con los factores de riesgo vascular, enfermedad vascular: cardiopatía isquémica, ACV isquémico y arteriopatía periférica, estado de nutrición, creatinina, albúmina, ácido fólico y vitamina B12. Resultados: la mortalidad durante el ingreso de los enfermos con homocisteína menor de 9 mol/l fue del 33%, del 9% cuando estaba entre 9 y 20 mol/l y del 17% si era superior a 20 mol/l. La disminución de la homocisteína se relacionó con mayor comorbilidad, pérdida de peso y disminución de la albúmina. A largo plazo, el aumento de la homocisteína se relacionó con mayor mortalidad, especialmente en los pacientes con enfermedad vascular. Conclusión: en los pacientes ancianos pluripatológicos tanto la disminución como el aumento de la homocisteína se asocian con una mayor mortalidad.

Valor pronóstico de la homocisteína sérica en enfermos ancianos hospitalizados en un servicio de medicina interna / Prognostic value of serum homocysteine levels in elderly hospitalized patients

Antecedentes y objetivos: el aumento de la homocisteína se relaciona con la enfermedad vascular y un incremento de la mortalidad. La disminución de la homocisteína se asocia también con un peor pronóstico en enfermos en hemodiálisis; sin embargo, esta relación no ha sido bien estudiada en otro tipo de pacientes. El objetivo del estudio fue analizar el valor pronóstico de los niveles de homocisteína en enfermos ancianos pluripatológicos ingresados en un servicio general de medicina interna Pacientes y métodos: estudiamos a 239 pacientes (121 mujeres y 118 varones; edad media: 78 años) en los que determinamos la homocisteína sérica y la relacionamos con los factores de riesgo vascular, enfermedad vascular: cardiopatía isquémica, ACV isquémico y arteriopatía periférica, estado de nutrición, creatinina, albúmina, ácido fólico y vitamina B12. Resultados: la mortalidad durante el ingreso de los enfermos con homocisteína menor de 9 μmol/l fue del 33%, del 9% cuando estaba entre 9 y 20 μmol/l y del 17% si era superior a 20 μmol/l. La disminución de la homocisteína se relacionó con mayor comorbilidad, pérdida de peso y disminución de la albúmina. A largo plazo, el aumento de la homocisteína se relacionó con mayor mortalidad, especialmente en los pacientes con enfermedad vascular. Conclusión: en los pacientes ancianos pluripatológicos tanto la disminución como el aumento de la homocisteína se asocian con una mayor mortalidad (AU)

Background and objectives: increased serum homocysteine levels are related to vascular disease and increased mortality. The decrease of homocysteine is also associated with a worse prognosis in patients on hemodialysis; however, this relationship has not been well studied in other patients. Our goal is to study the prognosis of increased and decreased serum homocysteine levels in elderly patients admitted to a general internal medicine unit. Patients and methods: we included 239 patients (121 women and 118 men; mean age, 78 years) in which we determined serum homocysteine levels and study its relationship with vascular risk factors, vascular disease: ischemic heart disease, ischemic stroke and peripheral arterial disease, nutritional status, creatinine, albumin, folate and B12 vitamin. Results: mortality during hospitalization of patients with homocysteine levels below 9 µmol/l was 33%, 9% for those with levels between 9 and 20 µmol/l and 17% for those with levels above 20 µmol/l. Low homocysteine values were related to increased comorbidity, higher degree of weight loss and decreased serum albumin levels. In a survival analysis using Kaplan-Meier curves, increased homocysteine was associated with increased mortality especially in patients with vascular disease. Conclusion: in elderly patients with multiple comorbidities, both decreased and increased serum homocysteine levels are associated with increased mortality (AU)

Prognostic value of physical function tests: hand grip strength and six-minute walking test in elderly hospitalized patients.

To discern if physical function test are better mortality predictors than muscle mass in elderly hospitalized patients, we analyzed the prognostic value of muscle mass malnutrition and compared it with physical muscle function tests, including the six-minute walking test (6 MWT) and hand grip strength. We included the ankle brachial index (ABI) to assess arterial disease, related to muscle atrophy due to hypoperfusion. We also analyzed the relationship of ABI with malnutrition, physical function tests and survival. We studied 310 hospitalized patients older than 60 years. To assess nutritional status, we determined BMI, triceps skinfold and mid-arm muscle area; we performed a subjective nutritional assessment; and evaluated the degree of inflammatory stress. We assessed physical function by hand grip strength and 6 MWT. We evaluated arterial disease by ABI. Forty-one patients died during hospitalization; 269 were discharged and followed for a mean 808 days, reaching a mortality of 49%. Muscle malnutrition was frequent and was related to mortality, but the best predictors were physical function tests: inability to perform the 6 MWT and low handgrip strength. Function tests were closely related to each other and correlated with nutritional data. Reduced ABI was related to impaired nutritional status, physical function tests and mortality.

Síndrome serotoninérgico por linezolid y metoclopramida / Serotoninergic syndrome due to linezolid and metoclopramide

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The obesity paradox in elderly patients with heart failure: analysis of nutritional status.

OBJECTIVE: The obesity paradox refers to the improved survival of obese compared with non-obese elderly or diseased patients for reasons that are not clear. To assess the relative roles of fat and other factors in this improved survival, we analyzed the prognostic value of overweight and obesity elderly patients with heart failure (HF), controlling for other nutritional data such as midarm anthropometrics, serum proteins, and muscle strength. METHODS: Two hundred forty-four patients (83.2 ± 0.5 y old) hospitalized for HF were included. A nutritional survey was performed in all patients. After discharge, the patients were followed up by telephone. RESULTS: Fourteen patients (5.7%) died during hospitalization. The median survival was 984 d. Patients with better nutritional status as assessed by the body mass index (BMI), subjective score, midarm muscle area, triceps skinfold thickness, handgrip, lymphocyte count, and serum albumin, prealbumin, and cholesterol levels showed better short- and long-term prognoses. Obese patients with a BMI above 30 kg/m(2) showed a better long-term prognosis than those with a BMI from 25 to 30 kg/m(2), those with a BMI from 20 to 25 kg/m(2), and those with a BMI lower than 20 kg/m(2). However, survival was not significantly related to a triceps skinfold thickness above the 95th percentile. Obese and overweight patients were younger and had better a nutritional status than those with a normal or decreased BMI as shown by the anthropometrics, subjective score, handgrip, lymphocyte count, hemoglobin, and serum albumin, prealbumin, and cholesterol levels. All the nutritional data correlated closely with each other. New York Heart Association class also correlated with nutrition-derived data: as the HF class increased, the nutritional status deteriorated. On multivariate analysis, to predict long-term survival, neither BMI nor triceps skinfold thickness showed an independent predictive value, whereas a larger midarm muscle area did. CONCLUSION: The obesity paradox was confirmed in this series of elderly patients with HF. Those with a high BMI and improved survival had a better nutritional status and New York Heart Association functional class than those with a lower BMI, which may explain the differences in survival.

Similar inflammatory response in alcoholic and non-alcoholic sepsis patients.

UNLABELLED: It is well known that alcoholics are prone to severe infections and that the immune system is impaired by chronic ethanol abuse. The aim of this study is to compare serum inflammatory mediators in response to sepsis in chronic alcoholic with sepsis, non-alcoholics with sepsis and non-infected alcoholics. METHOD: We included 25 alcoholics with sepsis, 34 non-alcoholics with sepsis, 34 non-infected alcoholics admitted for programmed withdrawal, and 27 healthy control subjects. After initial evaluation, blood samples were taken for determination of serum cytokine levels. RESULTS: We found similar responses for the inflammatory mediators analyzed among our sepsis patients, regardless of alcohol abuse. The only difference was that alcoholics with sepsis showed lower CRP and G-CSF than non-alcoholic sepsis patients. There were no differences regarding leukocyte count. Alcoholics admitted for programmed withdrawal showed higher IL-6, IFN-γ, IL-10, Il-4 and ICAM-1 serum levels than healthy controls. Serum IL-5 levels were decreased in both alcoholic groups. CONCLUSION: The inflammatory response of alcoholics with sepsis is similar to that of non-alcoholic sepsis patients. However, the low G-CSF levels in alcoholic sepsis patients might suggest a predisposition to infections in alcohol abusers.

Factors involved in the paradox of reverse epidemiology.

BACKGROUND & AIMS: The hypothesis of reverse epidemiology holds that some cardiovascular risk factors, such as obesity, hypercholesterolemia and hypertension, in the elderly or in some chronic diseases are not harmful but permit better survival. However, this phenomenon is controversial and the underlying reasons are poorly understood. OBJECTIVE: To search for factors simultaneously linked to reverse epidemiology and to short or long term survival. METHODS: We included 400 patients, older than 60 years, hospitalized in a general internal medicine unit; 61 died in hospital and 338 were followed up by telephone. RESULTS: Obesity, higher blood pressure and serum cholesterol, besides being related to lower mortality both in hospital and after discharge, were associated with better nutrition and functional capacity, less intense acute phase reaction and organ dysfunction, and lower incidence of high-mortality diseases such as dementia, pneumonia, sepsis or cancer. These associations may explain why obesity and other reverse epidemiology data are inversely related to mortality. Weight loss was related to mortality independently of BMI. Patients with BMI under 30 kg/m(2) who died in hospital showed more weight loss than those who survived; the lower the BMI, the greater the weight loss. In contrast, patients with BMI over 30 kg/m(2) who died in hospital gained more weight than those who survived; the higher the BMI, the greater the weight gain. CONCLUSION: In patients over 60 years of age admitted to an internal medicine ward, obesity did not show independent survival value, being displaced by other nutritional parameters, functional capacity, acute phase reaction, organ dysfunction and diseases with poor prognosis.

Prognostic value of inflammatory markers (notably cytokines and procalcitonin), nutritional assessment, and organ function in patients with sepsis.

OBJECTIVE: Procalcitonin is useful for the diagnosis of sepsis, but its prognostic value regarding mortality is unclear. Our objective was to determine the prognostic value of procalcitonin determined at the onset of sepsis, and to compare it with other markers of inflammatory response, malnutrition and organ dysfunction data. METHODS: We studied 253 hospitalized patients (146 men, 107 women) with a median age of 65 years. Sepsis was defined as infection, and at least two SIRS criteria. We assessed co-morbidities, nutritional status, bacteremia, procalcitonin and other inflammatory markers (PCR, TNF-alpha, IL6, TREM-1, IL-10, IL-1ra, CD14 and LBP), and organ function using the SOFA score. Mortality was assessed at 28 days after onset of sepsis. RESULTS: At day 28, 49 (19%) patients had died. Inflammatory markers showed only moderate predictive value for mortality, with IL-10 and IL-6 being the best predictors. Mortality was mainly related to organ dysfunction indicators (SOFA and Glasgow scores), serum lactate, ferritin and LDH levels, and to nutritional data such as subjective assessment, handgrip strength and serum transferrin levels. The most frequent location of sepsis was the lung, with 140 cases (55%), which showed more comorbidity, worse nutritional status, less frequent bacteremia and lower inflammatory response. When the analysis was limited to patients with non-pulmonary sepsis, organ dysfunction, nutritional status and inflammatory markers showed the best prognostic value. Of the inflammatory markers, procalcitonin showed only moderate predictive value; however it showed the highest correlation with bacteremia and the ability to discriminate non-complicated sepsis from severe forms. CONCLUSION: Procalcitonin only showed moderate predictive value for sepsis-related mortality, being surpassed by organ dysfunction, nutritional status, IL-10 and IL-6. However, it proved useful to discriminate between non-complicated and severe forms of sepsis.

Serum leptin levels in community acquired pneumonia (CAP) are related to nutritional status and not to acute phase reaction.

To determine whether leptin in patients with CAP acts as a nutritional or as an inflammatory marker and whether leptin plays any role regarding survival, we included 222 patients diagnosed of CAP, 142 men and 80 women, median age 74 years. We did not find significant differences in serum leptin levels between CAP patients and healthy controls, even after adjusting by BMI. Serum leptin levels were directly related with BMI, body fat and muscle mass and inversely related with inflammatory markers, including pro- and anti-inflammatory cytokines. Patients with positive blood cultures showed lower serum leptin and raised inflammatory markers. Although patients who died showed lower values of serum leptin, multivariate analysis showed that the prognostic value of low serum leptin levels depends on impaired nutritional status. In conclusion, we suggest that in CAP patients, leptin does not act as an inflammatory reactant but as a nutritional marker.

Prognosis of community acquired pneumonia (CAP): value of triggering receptor expressed on myeloid cells-1 (TREM-1) and other mediators of the inflammatory response.

UNLABELLED: TREM-1 is an activating receptor expressed on the surface of neutrophils and mature monocytes when stimulated by bacteria or fungi, leading to amplification of the inflammatory response. Our objective is to analyze the prognostic value of serum sTREM-1 levels and other mediators of the inflammatory response, in patients hospitalized for CAP, and to compare its prognostic value with those of advanced age, pneumonia severity scores, Charlson index, nutritional status and severity of sepsis. METHODS: We included 226 patients with CAP, 145 males and 81 females, median age of 74 years. The following tests were performed: arterial blood gases and chest radiography, nutritional assessment, assessment of the severity of the sepsis, Pneumonia Severity Index (PSI) and CURB-65, and mediators of inflammation: TNF alfa, IL-6, IL-10, IL-1ra, LBP, sCD14, CRP, and sTREM-1. Mortality during admittance was defined as the sole end point. RESULTS: Twenty-eight of the two-hundred and twenty-six patients died (12.4%). On univariate analysis advanced age, dehydration, increased Na, low BMI, handgrip strength, serum albumin, prealbumin, IGF-1, lymphocyte count, conscious drowsiness, tachypnea, decreased PaO2, hypotension, creatinine, ASAT, LDH, severity of sepsis, a high PSI or CURB65, TNFalpha, IL-6, IL-10, IL-1ra, and sTREM-1 were related to mortality. Variables with an independent value were IGF-1, CURB-65, TREM-1, advanced age and IL-6. CONCLUSIONS: This study confirms the usefulness of TREM-1 in the diagnosis and prognosis of patients with CAP, which is independent of advanced age, other inflammation markers such as IL-6, severity index for CAP such as CURB-65 or PSI, severity of sepsis and nutritional status including IGF-1.

Clinical significance of homocysteine in elderly hospitalized patients.

Serum homocysteine levels, which increase with age, are now recognized as a vascular risk factor and are related to the development of heart failure and dementia in the elderly. However, relatively low serum homocysteine levels have also been reported to be an adverse prognostic factor in dialysis patients. The objective of the study was to analyze the prevalence, clinical significance, and prognostic value of serum homocysteine levels in patients older than 65 years, admitted to a general internal medicine hospitalization unit. We studied 337 hospitalized patients, 184 males and 153 females, aged 77.2+/-0.4 years, whose admission was not determined by an acute vascular event. We recorded past vascular events and vascular risk factors. We determined the body mass index (weight in kilograms divided by the square of height in meters), and cholesterol, triglyceride, folate, vitamin B12, and homocysteine levels. We also studied 36 control subjects (18 males and 18 females) of similar age. After discharge, we assessed the survival status of 301 patients by telephone recall. Survival curves were plotted by the method of Kaplan and Meier. Median survival was 1186 days. The 15th (9.6 micromol/L) and 50th (14.4 micromol/L) percentiles, as the lowest and highest cut-off points, were empirically defined as those related to a shorter survival. Serum homocysteine concentration was significantly positively correlated with age and serum creatinine and albumin concentrations, and negatively correlated with serum cobalamin and folate concentrations. The average serum homocysteine concentration for the patients group, as a whole, was 16.5+/-0.5 micromol/L, not significantly different from the control group, but with a much greater dispersion, as patients with congestive heart failure or cognitive impairment had higher serum homocysteine concentrations, and patients with sepsis, leukocytosis, and hypoalbuminemia had lower concentrations. Malnutrition was associated both with abnormally high and low homocysteine concentrations, and abnormally low and abnormally high homocysteine concentrations were both associated with higher mortality. In conclusion, low homocysteine levels in elderly non-vitamin-supplemented hospitalized patients should not be interpreted as a protective factor in some individuals. Instead, it may be considered as an effect of an inflammatory-malnutrition process associated with a poor prognosis.

Low serum leptin levels and malnutrition in chronic alcohol misusers hospitalized by somatic complications.

AIMS: Leptin is a peptide produced by fat cells which regulates fat mass by decreasing food intake and increasing resting energy expenditure, so an increase of serum leptin could be an indicator of malnutrition. Our objective was to determine serum leptin levels (at admission and on the 15th day) in 79 male alcohol misusers, hospitalized by somatic complications, who drink more than 80 g ethanol/day, and to analyse its relationships with nutritional status assessed by anthropometry and dual-energy X-ray absortiometry (DEXA), insulin-like growth factor (IGF-1) and its binding protein (IGF1BP-3); acute phase reaction assessed by C-reactive protein (CRP), interleukin-6 (IL-6) and type II soluble receptor of tumour necrosis factor (TNF) (sTNFRII); serum oestradiol and testosterone; and the amount and duration of ethanol intake, the smoking habit and the presence of liver cirrhosis. METHODS: Patients were admitted through the emergency room, and blood for the above-mentioned determinations was taken at 08.00 on the following day, so none of the patients was acutely intoxicated at this time. The control group was composed of 32 healthy male (age-matched) subjects. RESULTS: Malnutrition was frequent among alcoholics. Serum leptin levels were closely related to total fat both in controls and in alcoholics. Serum leptin levels were decreased in alcoholics, even after adjusting for the amount of fat. Those alcoholics who reported anorexia and weight loss showed decreased leptin levels. After 15 days of hospitalization, serum leptin did not increase, in contrast with LDL cholesterol, serum albumin, prealbumin, IGF-1, IGF1BP-3 and testosterone which increased, whereas oestradiol and acute phase reactants, such as CRP, IL-6 and sTNFRII, were decreased. Serum leptin was not related to gonadal hormones at admission, but on day 15 we found a negative correlation between leptin and testosterone, and a positive one with oestradiol. CONCLUSIONS: Serum leptin levels are related to many factors, e.g. fat mass, age, smoking, serum testosterone and oestradiol levels, growth factors such as IGF-1 and CRP, and cytokines, such as IL-6 and sTNFRII. The most important of these is fat mass, as shown by multivariate analysis. Since serum leptin levels are decreased in alcohol misusers, we consider this decrease to be a consequence of a low fat mass.

Leptin role in advanced lung cancer. A mediator of the acute phase response or a marker of the status of nutrition?

Leptin is an anorexia inductor peptide produced by adipocytes and related to fat mass. Leptin is also produced by fat under proinflammatory cytokine action. Our objective is to study serum leptin levels in relation to nutritional status and acute phase response in advanced-stage non-small cell lung cancer.Seventy-six patients newly diagnosed of non surgical non-small cell lung cancer before chemotherapy treatment and 30 healthy controls were included. BMI, serum leptin and cholesterol levels and lymphocyte count were decreased in lung cancer patients. Cytokine IL-6, TNF-alpha, sTNF-RII, sIL-2R, IL-12, IL-10 and IFN-gamma, and other acute phase reactants as alpha1 antitrypsin, ferritin, CRP and platelets were all raised in patients, whereas the IL-2 was decreased. We found a direct relationship between leptin and other indicators of the status of nutrition, especially total fat mass. We also found a close relationship between the status of nutrition and the performance status (Karnofsky index). However, serum leptin and nutritional status were inversely correlated with acute phase proteins and proinflammatory cytokines, suggesting a stress-type malnutrition. Although serum leptin levels, nutritional status and Karnofsky index are related to survival, at multivariate analysis they all were displaced by the acute phase reaction markers. These results suggest that cancer anorexia and cachexia are not due to a dysregulation of leptin production. Circulating leptin concentrations are not elevated in weight-losing cancer patients and are inversely related to the intensity of the inflammatory response. In advanced lung cancer patients serum leptin concentrations only depend on the total amount of fat.

Endocarditis por Gemella morbillorum / Endocarditis due to Gemella morbillorum

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