Abstract:
BACKGROUND:Plasma levels of leptin, the recently discovered satiety hormone, are associated with adiposity in humans. OBJECTIVE:To determine whether genetic factors or body fat distribution affect the association between leptin levels and obesity. PARTICIPANTS:23 healthy identical twin pairs (9 male pairs and 14 female pairs, 33 to 59 years of age) who were discordant for obesity (average weight difference, 18 kg). MEASUREMENTS:Fasting plasma leptin levels were measured by radioimmunoassay. Distribution of abdominal fat into visceral and subcutaneous compartments was estimated by use of magnetic resonance imaging. RESULTS:Plasma leptin levels were threefold higher in obese twins than in lean twins (mean +/- SD, 18.7 +/- 12.5 micrograms/L compared with 6.4 +/- 4.8 micrograms/L; P < 0.001); a similar difference was seen when the entire study group was divided according to sex. Compared with lean twins, plasma leptin levels were 3.7-fold higher in the obese twins who had visceral fat accumulation greater than the median and 2.1-fold higher in the obese twins who had visceral fat accumulation less than the median. The intrapair differences in leptin levels correlated with the corresponding differences in percentage of body fat in women (r = 0.73; P = 0.003) but not in men and correlated with differences in visceral fat area in men (r = 0.79; P = 0.019) and women (r = 0.73; P = 0.007). In multiple regression analyses that included intrapair differences in visceral fat area and total body fat, the association between differences in visceral fat area and leptin levels was significant in men (P = 0.029) but not in women. CONCLUSIONS:Plasma leptin levels are increased in obese persons, independent of genetic background. Visceral fat may be of special importance in the regulation of leptin levels, but it is probably less important in women than in men.
journal_name
Ann Intern Medjournal_title
Annals of internal medicineauthors
Rönnemaa T,Karonen SL,Rissanen A,Koskenvuo M,Koivisto VAdoi
10.7326/0003-4819-126-1-199701010-00004subject
Has Abstractpub_date
1997-01-01 00:00:00pages
26-31issue
1eissn
0003-4819issn
1539-3704journal_volume
126pub_type
杂志文章abstract::Diabetes mellitus is classified into two major categories: type I, which is insulin dependent, and type II, which is not. Insulin resistance in type II diabetes may be related to impaired receptor binding in some forms of the disorder. In the past, diabetes in pregnant women resulted in high rates of maternal and infa...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-96-5-635
更新日期:1982-05-01 00:00:00
abstract::Important historical changes have occurred both in the content of the periodic health examination and in the legitimacy with which this examination has been viewed. These changes reflect fundamental shifts in the objectives of the examination and in the concerns of its advocates, the most prominent of whom have been p...
journal_title:Annals of internal medicine
pub_type: 历史文章,杂志文章
doi:10.7326/0003-4819-127-10-199711150-00010
更新日期:1997-11-15 00:00:00
abstract:Background:High-sensitivity assays for cardiac troponin T (hs-cTnT) are sometimes used to rapidly rule out acute myocardial infarction (AMI). Purpose:To estimate the ability of a single hs-cTnT concentration below the limit of detection (<0.005 µg/L) and a nonischemic electrocardiogram (ECG) to rule out AMI in adults ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/M16-2562
更新日期:2017-05-16 00:00:00
abstract::Endocarditis is a relatively frequent infection in intravenous drug users. We compared features in the cases of 102 patients with those in intravenous drug users with other causes of fever to identify risk factors predictive of endocarditis. Logistic regression analysis showed cocaine use to be strongly associated wit...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-106-6-833
更新日期:1987-06-01 00:00:00
abstract:Background:As cardiovascular risk increases in China, interest in strategies to mitigate it is growing. However, national information about the prevalence and treatment of high cardiovascular disease (CVD) risk is limited. Objective:To assess the prevalence and treatment of high CVD risk as well as variations in risk ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/M18-1932
更新日期:2019-03-05 00:00:00
abstract:BACKGROUND:Introduction of a universal varicella vaccine program for U.S. children in 1996 sparked concern that less-frequent exposure to varicella would decrease external boosting of immunity to varicella zoster virus and thereby increase incidence of herpes zoster (HZ). OBJECTIVE:To determine whether the varicella v...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-159-11-201312030-00006
更新日期:2013-12-03 00:00:00
abstract:Background:Patients desire information about health care costs because they are increasingly responsible for these costs. Public Web sites that offer cost information could inform provider-patient discussions of costs at the point of care. Objective:To evaluate tools to facilitate the use of publicly available cost in...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/M18-2223
更新日期:2019-05-07 00:00:00
abstract:BACKGROUND:Vaccines are one of the greatest achievements in public health. Prevalence and clinical significance of emerging postapproval, vaccine-related safety issues have not been systematically studied. OBJECTIVE:To explore postmarketing safety modifications in U.S. Food and Drug Administration (FDA)-approved vacci...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M20-2726
更新日期:2020-09-15 00:00:00
abstract:BACKGROUND:Advice and exercise are widely recommended for subacute low back pain, but the effectiveness of these interventions is unclear. OBJECTIVE:To investigate the effectiveness of physiotherapist-prescribed exercise, advice, or both for subacute low back pain. DESIGN:Factorial randomized, placebo-controlled tria...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-146-11-200706050-00007
更新日期:2007-06-05 00:00:00
abstract:Background:Probiotics, prebiotics, and synbiotics are used increasingly, although the safety and potential harms of these interventions are poorly understood. Purpose:To examine how harms-related information is reported in publications of randomized controlled trials (RCTs) of probiotics, prebiotics, and synbiotics. ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M18-0343
更新日期:2018-08-21 00:00:00
abstract:BACKGROUND:Tobacco dependence is a chronic, relapsing condition that may require extended treatment. OBJECTIVE:To assess whether extended-duration transdermal nicotine therapy increases abstinence from tobacco more than standard-duration therapy in adult smokers. DESIGN:Parallel randomized, placebo-controlled trial f...
journal_title:Annals of internal medicine
pub_type: 杂志文章,随机对照试验
doi:10.7326/0003-4819-152-3-201002020-00005
更新日期:2010-02-02 00:00:00
abstract:BACKGROUND:Residual renal function is an important determinant of mortality and morbidity in patients receiving peritoneal dialysis. However, few studies have evaluated therapeutic approaches for preserving residual renal function after the initiation of dialysis. OBJECTIVE:To test the hypothesis that the angiotensin-...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.7326/0003-4819-139-2-200307150-00010
更新日期:2003-07-15 00:00:00
abstract::Two patients with profound decrease of alpha1-antitrypsin (PiZZ) presented with severe pannicultis (Weber-Christian disease); one had systemic panniculitis including pancreatitis. Another possible case is quoted from the literature. Although milder forms of panniculitis can have normal Pi phenotypes and alpha1-antitry...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-86-6-742
更新日期:1977-06-01 00:00:00
abstract::We studied D-penicillamine toxicity in 259 patients with systemic sclerosis treated since 1972. The average daily dose of 635 mg was given for a mean of 1.8 years. Of patients with systemic sclerosis, 47% has side effects from D-penicillamine treatment, similar to the 56% of 807 patients with rheumatoid arthritis in s...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-104-5-699
更新日期:1986-05-01 00:00:00
abstract:BACKGROUND:The standard diagnostic approach in patients suspected of having pulmonary embolism starts with perfusion-ventilation lung scanning. If the resulting scan is not diagnostic, pulmonary angiography should be done. The use of tests for deep venous thrombosis has been advocated as an adjunct to establishing the ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-126-10-199705150-00005
更新日期:1997-05-15 00:00:00
abstract::Individual differences in metabolism of the sulfonamides may predispose patients to idiosyncratic reactions. Sulfonamides are metabolized by N-acetylation (mediated by a genetically polymorphic enzyme) and oxidation to potentially toxic metabolites. We examined 6 patients who had severe reactions to sulfonamides and c...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-105-2-179
更新日期:1986-08-01 00:00:00
abstract:BACKGROUND:Although clinicians avoid giving meropenem to patients with penicillin allergy because of potential cross-reactivity, the rate of cross-reactivity between penicillins and meropenem has not been prospectively determined. OBJECTIVE:To assess the tolerability of meropenem in patients with documented penicillin...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,多中心研究
doi:10.7326/0003-4819-146-4-200702200-00005
更新日期:2007-02-20 00:00:00
abstract:BACKGROUND:Each year, millions of patients worldwide have a perioperative myocardial infarction (MI) after noncardiac surgery. OBJECTIVE:To examine the characteristics and short-term outcome of perioperative MI. DESIGN:Cohort study. (ClinicalTrials.gov registration number: NCT00182039) SETTING:190 centers in 23 coun...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/0003-4819-154-8-201104190-00003
更新日期:2011-04-19 00:00:00
abstract:OBJECTIVE:To determine the causes of persistent dizziness in outpatients. DESIGN:Consecutive adult outpatients presenting with a chief complaint of dizziness. SETTING:Four clinics (internal medicine, walk-in, emergency room, and neurology) in a teaching hospital. PATIENTS:Of 185 patients presenting during the 10-mon...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-117-11-898
更新日期:1992-12-01 00:00:00
abstract::9-(1,3-dihydroxy-2-propoxymethyl) guanine (ganciclovir) was used to treat 41 patients (median age, 37 years) with the acquired immunodeficiency syndrome and cytomegalovirus gastrointestinal infection. Sites of infection were the colon in 31, the esophagus in 5, the rectum in 4, and the small bowel in 1. Patients recei...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-107-2-133
更新日期:1987-08-01 00:00:00
abstract:SOURCE CITATION:Cao B, Wang Y, Wen D, et al. A trial of lopinavir-ritonavir in adults hospitalized with severe Covid-19. N Engl J Med. 2020;382:1787-99. 32187464. ...
journal_title:Annals of internal medicine
pub_type: 评论,杂志文章
doi:10.7326/ACPJ202006160-063
更新日期:2020-06-16 00:00:00
abstract::During the National Cooperative Gallstone Study, therapy with chenodiol, 750 or 375 mg/d, for 2 years resulted in confirmed, complete gallstone dissolution in 14% and 5% of patients, respectively, and partial dissolution (greater than 50%) in 27% and 18%. The present study was done to determine the frequency with whic...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章
doi:10.7326/0003-4819-100-3-382
更新日期:1984-03-01 00:00:00
abstract::Implantable cardioverter defibrillators are life-saving devices for many patients with cardiac disease. Recipients of these devices, nevertheless, often suffer from progressive comorbid and cardiac conditions. Therefore, physicians should anticipate situations in which the defibrillator is no longer desired by the pat...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-142-8-200504190-00012
更新日期:2005-04-19 00:00:00
abstract::We retrospectively reviewed the therapeutic efficacy of antithyroid drugs for Graves disease. Sixty-nine patients were divided into three categories according to their response: 28 (40.6%) were unable to achieve a remission; 6 (8.7%) achieved a remission and subsequently had a relapse; and 35 (50.7%) were able to sust...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-107-4-510
更新日期:1987-10-01 00:00:00
abstract::Ten patients with lupus nephritis and marked proteinuria (3.9 g or more/d) that did not respond adequately to treatment with prednisone alone or prednisone in combination with azathioprine were treated with total lymphoid irradiation in an uncontrolled feasibility study. Within 6 weeks after the start of total lymphoi...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-102-4-450
更新日期:1985-04-01 00:00:00
abstract:STUDY OBJECTIVE:To assess the long-term benefit and side effects of danazol therapy, and to delineate factors influencing the responses in patients with autoimmune thrombocytopenia. DESIGN:Before and after trial. SETTING:Referral-based hematology clinics and the University of Miami teaching hospitals. PATIENTS:Data ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-111-9-723
更新日期:1989-11-01 00:00:00
abstract:BACKGROUND:Variants in genes involved in warfarin metabolism and sensitivity affect individual warfarin requirements and the risk for bleeding. Testing for these variant alleles might allow more personalized dosing of warfarin during the induction phase. In 2007, the U.S. Food and Drug Administration changed the labeli...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-150-2-200901200-00005
更新日期:2009-01-20 00:00:00
abstract:Background:The benefits of pay-for-performance (P4P) programs are uncertain. Purpose:To update and expand a prior review examining the effects of P4P programs targeted at the physician, group, managerial, or institutional level on process-of-care and patient outcomes in ambulatory and inpatient settings. Data Sources...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/M16-1881
更新日期:2017-03-07 00:00:00
abstract::Multiple myeloma raises a number of puzzling questions about the production of immunoglobulins and the malignant transformation of lymphoid cells. Some of these questions can be approached by studying mouse plasmacytomas and by genetic and biochemical studies of mouse myeloma cells in culture. The synthesis, assembly,...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-85-1-110
更新日期:1976-07-01 00:00:00
abstract:BACKGROUND:Bhutan implemented a national program for human papillomavirus (HPV) vaccination in 2010 involving girls aged 12 to 18 years and achieving nearly 90% coverage. OBJECTIVE:To estimate HPV vaccine effectiveness in a city in Bhutan. DESIGN:2 cross-sectional surveys, 2011-2012 and 2018. SETTING:2 hospitals in ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M20-2849
更新日期:2020-12-01 00:00:00