human
***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Our most striking finding was that of the 16 patients monitored by the technique , those with no spontaneous lower oesophageal contractility at any time , but with provoked activity intact , were invariably subsequently diagnosed as brain dead clinical ly after the action ofpancuronium had worn off or been reversed . In this institution brain death is diagnosed using the criteria set out by the royal colleges and faculties of the United Kingdom.3 In addition , carotid arteriography is performed to show cessation ofcerebral circulation . The loss of spontaneous contractility in the presence of continuing provoked activity is explained by the normal physiology of the human oesophagus . The principal nerve supply is derived from the vagus nerve . The lower oesophageal muscle is supplied from intramural and paraoesophageal nerve plexuses . Vagal afferent and efferent fibres connect the oesophageal plexuses with the brain stem nuclei of the vagus nerve , which in turn are connected with higher cortical centres . The mechanisms governing production of non-propulsive activity are unknown , though acoustic stimuli as well as other forms of external stimuli can provoke this response.45 Thus it appears that an intact pathway between the brain and oesophagus is required for non-propulsive activity to occur . By contrast , secondary activity ( peristaltic ) has been recorded in the isolated opossum oesophagus ex vivo and so does not require control by higher centres.2 Hence in brain dead patients spontaneous lower oesophageal contractility would not be expected , whereas provokedcontractility should be intact , as we have found . We conclude that monitoring lower oesphageal contractility may be very useful in the early identification of brain death and may help to predict outcome in patients with head injury Objectives : To investigate the cognitive effects of high-dose oral estrogen alone or in combination with oral methyltestosterone in postmenopausal women . Methods : Participants were tested with a r and omized , double-blind design on the Identical Pictures , Cube Comparisons , Building Memory and Shape Memory tasks before and after 4 months of hormone treatment . Results : Women receiving estrogen and methyltestosterone maintained a steady level of performance on the Building Memory task , whereas those receiving estrogen alone showed a decrease in performance . Conclusions : These results indicate that the addition of testosterone to high-dose estrogen replacement exerts a protective effect on memory performance in postmenopausal women CONTEXT Hypoactive sexual desire disorder ( HSDD ) is one of the most common sexual problems reported by women , but few studies have been conducted to evaluate treatments for this condition . OBJECTIVE The objective of this study was to evaluate the efficacy and safety of a testosterone patch in surgically menopausal women with HSDD . DESIGN The design was a r and omized , double-blind , parallel-group , placebo-controlled , 24-wk study ( the Intimate SM 1 study ) . SETTING The study was performed at private or institutional practice s. PATIENTS The subjects studied were women , aged 26 - 70 yr , with HSDD after bilateral salpingo-oophorectomy who were receiving concomitant estrogen therapy . Placebo ( n = 279 ) or testosterone 300 microg/d ( n = 283 ) was administered . There were 19 patients who withdrew due to adverse events in the placebo group and 24 in the 300 mug/d testosterone group . INTERVENTION Testosterone ( 300 microg/d ) or placebo patches were applied twice weekly . MAIN OUTCOME MEASURE(S ) The primary end point was the change in the frequency of total satisfying sexual activity at 24 wk . Secondary end points included other sexual functioning end points and safety assessment s. RESULTS At 24 wk , there was an increase from baseline in the frequency of total satisfying sexual activity of 2.10 episodes/4 wk in the testosterone group , which was significantly greater than the change of 0.98 episodes/4 wk in the placebo group ( P = 0.0003 ) . The testosterone group also experienced statistically significant improvements in sexual desire and a decrease in distress . The overall safety profile was similar in both treatment groups . CONCLUSION In the Intimate SM 1 study , the testosterone patch improved sexual function and decreased distress in surgically menopausal women with HSDD and was well tolerated in this trial Objective To compare an oral estrogen- and rogen combination with estrogens alone on bone , menopausal symptoms , and lipoprotein profiles in postmenopausal women . Methods Surgically menopausal women received oral esterified estrogens ( 1.25 mg ) , or esterified estrogens ( 1.25 mg ) and methyltestosterone ( 2.5 mg ) daily , for 2 years . Bone mineral density of the lumbar spine and hip , menopausal symptoms , lipoprotein profiles , and biochemical and hematologic indices were evaluated . Results Sixty-six patients were enrolled in the study . Both treatment regimens prevented bone loss at the spine and hip ; combined estrogen- and rogen therapy was associated with a significant increase in spinal bone mineral density compared with baseline ( n = 24 ; mean score ± st and ard error 3.4 ± 1.2 % , P < .01 ) . In the estrogen group , high-density lipoprotein ( HDL ) cholesterol increased significantly and low-density lipoprotein cholesterol decreased significantly . Cholesterol , HDL cholesterol , and triglycerides decreased significantly in the estrogen- and rogen  group . Menopausal symptoms of somatic origin ( hot flashes , vaginal dryness , and insomnia ) were improved significantly by both treatments . Neither adverse hepatic effects nor significant safety or tolerance problems were reported in either group . Conclusion Oral estrogen- and rogen  increased vertebral bone mineral density compared with pre-treatment values and relieved somatic symptoms . Safety indices , including lipoprotein levels , indicated that the combination was well tolerated over the 2 years of treatment CONTEXT Changes in and rogen levels across the adult female life span and the effects of natural menopause and oophorectomy have not been clearly established . OBJECTIVE The objective of this study was to document the effects of age on and rogen levels in healthy women and to explore the effects of natural and surgical menopause . DESIGN , SETTING , AND PARTICIPANTS A cross-sectional study was conducted of 1423 non-healthcare-seeking women , aged 18 - 75 yr , r and omly recruited from the community over 15 months . MAIN OUTCOME MEASURES Serum levels by age of total testosterone ( T ) , calculated free T , dehydroepi and rosterone sulfate , and and rostenedione in a reference group of women free of confounding factors . Women in the reference group had no usage of exogenous steroid therapy ; no history of tubal ligation , hysterectomy , or bilateral oophorectomy ; and no hyperprolactinemia or polycystic ovarian syndrome . The effects of natural and surgical menopause on sex steroid levels were also examined . RESULTS In the reference population ( n = 595 ) , total T , calculated free T , dehydroepi and rosterone sulfate , and and rostenedione declined steeply with age ( P < 0.001 ) , with the decline of each being greater in the earlier than the later decades . Examination of serum and rogen levels by year in women aged 45 - 54 yr showed no independent effect of menopausal status on and rogen levels . In women aged 55 yr or older , those who reported bilateral oophorectomy and were not on exogenous steroids had significantly lower total T and free T levels than women 55 yr or older in the reference group . CONCLUSIONS We report that serum and rogen levels decline steeply in the early reproductive years and do not vary because a consequence of natural menopause and that the postmenopausal ovary appears to be an ongoing site of testosterone production . These significant variations in and rogens with age must be taken into account when normal ranges are reported and in studies of the role of and rogens in women OBJECTIVE In some women , a decline in sexual interest accompanies a relative and rogen insufficiency after menopause . We sought to characterize the hormonal effects of the combination of oral esterified estrogens and methyltestosterone and to investigate whether this regimen improves hypoactive sexual desire . DESIGN Double-blind r and omized trial . SETTING Healthy volunteers in a multicenter research environment . PATIENT(S ) Postmenopausal women taking estrogen therapy who were experiencing hypoactive sexual desire . INTERVENTION(S ) 4 months of treatment with 0.625 mg of esterified estrogens ( n = 111 ) or the combination of 0.625 mg of esterified estrogens and 1.25 mg of methyltestosterone ( n = 107 ) . MAIN OUTCOME MEASURES Baseline and end-of- study measurements of total and bioavailable testosterone and sex hormone-binding globulin ( SHBG ) , and mean change in level of sexual interest or desire as rated on the Sexual Interest Question naire . RESULT ( S ) Treatment with the combination of esterified estrogens and methyltestosterone significantly increased the concentration of bioavailable testosterone and suppressed SHBG . Scores measuring sexual interest or desire and frequency of desire increased from baseline with combination treatment and were significantly greater than those achieved with esterified estrogens alone . Treatment with the combination was well tolerated . CONCLUSION ( S ) Increased circulating levels of unbound testosterone and suppression of SHBG provide a plausible hormonal explanation for the significantly improved sexual functioning in women receiving the combination of esterified estrogen and methyltestosterone OBJECTIVE To investigate the efficacy of esterified estrogens alone and combined with oral and rogen on sexual function and menopausal symptoms in postmenopausal women . STUDY DESIGN Twenty postmenopausal women dissatisfied with their estrogen or estrogen-progestin therapy volunteered to enter a double-blind , r and omized trial in which they received either oral esterified estrogens or esterified estrogens + and rogen for eight weeks after a single-blind , placebo , lead-in period . Sexual function was assessed with a question naire used in the Yale midlife survey , and plasma levels of estradiol , estrone , sex hormone binding globulin ( SHBG ) and beta-endorphin were measured at two- to four-week intervals . RESULTS Estrogen- and rogen therapy significantly improved sexual sensation and desire after four and eight weeks of double-blind treatment in comparison to previous estrogen therapy and postplacebo baseline assessment s. Plasma levels of estradiol and estrone increased significantly in all patients as compared to the postplacebo baseline and decreased in comparison to circulating estrogen concentrations on previous therapy . Relative proportions of free and bound steroid hormone exhibited contrasting shifts during estrogen and estrogen- and rogen therapy .  SHBG increased in the estrogen group and decreased in the estrogen- and rogen group , leading to lower amounts of free and rogens during estrogen therapy and increased free and rogen levels during estrogen- and rogen therapy . Since proportions of free ( bioavailable ) ovarian steroids would correlate inversely with plasma protein binding capacity , the beneficial effects of oral estrogen- and rogen therapy on sexual sensation and desire may be due either to the administered and rogen or to the increased availability of endogenous and exogenous and rogens , particularly in the central nervous system . CONCLUSION Sexual desire , satisfaction and frequency in postmenopausal women taking hormonal therapy were improved significantly by combined estrogen- and rogen therapy but not by estrogen or estrogen-progestin therapy .  Sexual function improved with estrogen- and rogen therapy even though circulating estrogen levels were lower than those measured during previous estrogen therapy . This leads to the conclusion that and rogens play a pivotal role in sexual function but that estrogens are not a significant factor determining levels of sexual drive and enjoyment METHODS In a r and omized , double-blind , placebo-controlled clinical trial , we evaluated the effect of a 2-year treatment with n and rolone decanoate ( ND ) on bone mineral density ( BMD ) of lumbar spine , femoral neck , and trochanter and on vertebral fracture rate , muscle mass , and hemoglobin levels .  Sixty-five osteoporotic women older than 70 years were studied . Thirty-two patients received injections of 50 mg ND , and 33 received placebos every 3 weeks . All patients received 500 mg calcium tablets daily . RESULTS Compared to baseline , ND increased the BMD of the lumbar spine ( 3.4 % + /- 6.0 and 3.7 % + /- 7.4 ; p < .05 ) and femoral neck ( 4.1 % + /- 7.3 and 4.7 % + /- 8.0 ; p < .05 ) after 1 and 2 years , respectively . The BMD of trochanter increased significantly only after the first year ( 4.8 % + /- 9.3 , p < .05 ) . Compared to the placebo group , the ND group presented with significantly increased BMD of the trochanter and neck . ND significantly reduced incidence of new vertebral fractures ( 21 % vs 43 % in the placebo group ; p < .05 ) . ND showed a significant statistical increase in lean body mass after the first ( 6.2 % + /- 5.8 ; p < .01 ) and second years ( 11.9 % + /- 
    Output:
    
agent
The pooled estimate from the studies suggested that the addition of testosterone to HT regimens improved sexual function scores for postmenopausal women .
A significant adverse effect was a decrease in high-density lipoprotein ( HDL ) cholesterol levels .
However , there is evidence that adding testosterone to HT has a beneficial effect on sexual function in postmenopausal women .
There was a reduction in HDL cholesterol associated with the addition of testosterone to the HT regimens .
It is , therefore , difficult to estimate the effect of testosterone on sexual function in association with any individual hormone treatment regimen
***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Our most striking finding was that of the 16 patients monitored by the technique , those with no spontaneous lower oesophageal contractility at any time , but with provoked activity intact , were invariably subsequently diagnosed as brain dead clinical ly after the action ofpancuronium had worn off or been reversed . In this institution brain death is diagnosed using the criteria set out by the royal colleges and faculties of the United Kingdom.3 In addition , carotid arteriography is performed to show cessation ofcerebral circulation . The loss of spontaneous contractility in the presence of continuing provoked activity is explained by the normal physiology of the human oesophagus . The principal nerve supply is derived from the vagus nerve . The lower oesophageal muscle is supplied from intramural and paraoesophageal nerve plexuses . Vagal afferent and efferent fibres connect the oesophageal plexuses with the brain stem nuclei of the vagus nerve , which in turn are connected with higher cortical centres . The mechanisms governing production of non-propulsive activity are unknown , though acoustic stimuli as well as other forms of external stimuli can provoke this response.45 Thus it appears that an intact pathway between the brain and oesophagus is required for non-propulsive activity to occur . By contrast , secondary activity ( peristaltic ) has been recorded in the isolated opossum oesophagus ex vivo and so does not require control by higher centres.2 Hence in brain dead patients spontaneous lower oesophageal contractility would not be expected , whereas provokedcontractility should be intact , as we have found . We conclude that monitoring lower oesphageal contractility may be very useful in the early identification of brain death and may help to predict outcome in patients with head injury Objectives : To investigate the cognitive effects of high-dose oral estrogen alone or in combination with oral methyltestosterone in postmenopausal women . Methods : Participants were tested with a r and omized , double-blind design on the Identical Pictures , Cube Comparisons , Building Memory and Shape Memory tasks before and after 4 months of hormone treatment . Results : Women receiving estrogen and methyltestosterone maintained a steady level of performance on the Building Memory task , whereas those receiving estrogen alone showed a decrease in performance . Conclusions : These results indicate that the addition of testosterone to high-dose estrogen replacement exerts a protective effect on memory performance in postmenopausal women CONTEXT Hypoactive sexual desire disorder ( HSDD ) is one of the most common sexual problems reported by women , but few studies have been conducted to evaluate treatments for this condition . OBJECTIVE The objective of this study was to evaluate the efficacy and safety of a testosterone patch in surgically menopausal women with HSDD . DESIGN The design was a r and omized , double-blind , parallel-group , placebo-controlled , 24-wk study ( the Intimate SM 1 study ) . SETTING The study was performed at private or institutional practice s. PATIENTS The subjects studied were women , aged 26 - 70 yr , with HSDD after bilateral salpingo-oophorectomy who were receiving concomitant estrogen therapy . Placebo ( n = 279 ) or testosterone 300 microg/d ( n = 283 ) was administered . There were 19 patients who withdrew due to adverse events in the placebo group and 24 in the 300 mug/d testosterone group . INTERVENTION Testosterone ( 300 microg/d ) or placebo patches were applied twice weekly . MAIN OUTCOME MEASURE(S ) The primary end point was the change in the frequency of total satisfying sexual activity at 24 wk . Secondary end points included other sexual functioning end points and safety assessment s. RESULTS At 24 wk , there was an increase from baseline in the frequency of total satisfying sexual activity of 2.10 episodes/4 wk in the testosterone group , which was significantly greater than the change of 0.98 episodes/4 wk in the placebo group ( P = 0.0003 ) . The testosterone group also experienced statistically significant improvements in sexual desire and a decrease in distress . The overall safety profile was similar in both treatment groups . CONCLUSION In the Intimate SM 1 study , the testosterone patch improved sexual function and decreased distress in surgically menopausal women with HSDD and was well tolerated in this trial Objective To compare an oral estrogen- and rogen combination with estrogens alone on bone , menopausal symptoms , and lipoprotein profiles in postmenopausal women . Methods Surgically menopausal women received oral esterified estrogens ( 1.25 mg ) , or esterified estrogens ( 1.25 mg ) and methyltestosterone ( 2.5 mg ) daily , for 2 years . Bone mineral density of the lumbar spine and hip , menopausal symptoms , lipoprotein profiles , and biochemical and hematologic indices were evaluated . Results Sixty-six patients were enrolled in the study . Both treatment regimens prevented bone loss at the spine and hip ; combined estrogen- and rogen therapy was associated with a significant increase in spinal bone mineral density compared with baseline ( n = 24 ; mean score ± st and ard error 3.4 ± 1.2 % , P < .01 ) . In the estrogen group , high-density lipoprotein ( HDL ) cholesterol increased significantly and low-density lipoprotein cholesterol decreased significantly . Cholesterol , HDL cholesterol , and triglycerides decreased significantly in the estrogen- and rogen  group . Menopausal symptoms of somatic origin ( hot flashes , vaginal dryness , and insomnia ) were improved significantly by both treatments . Neither adverse hepatic effects nor significant safety or tolerance problems were reported in either group . Conclusion Oral estrogen- and rogen  increased vertebral bone mineral density compared with pre-treatment values and relieved somatic symptoms . Safety indices , including lipoprotein levels , indicated that the combination was well tolerated over the 2 years of treatment CONTEXT Changes in and rogen levels across the adult female life span and the effects of natural menopause and oophorectomy have not been clearly established . OBJECTIVE The objective of this study was to document the effects of age on and rogen levels in healthy women and to explore the effects of natural and surgical menopause . DESIGN , SETTING , AND PARTICIPANTS A cross-sectional study was conducted of 1423 non-healthcare-seeking women , aged 18 - 75 yr , r and omly recruited from the community over 15 months . MAIN OUTCOME MEASURES Serum levels by age of total testosterone ( T ) , calculated free T , dehydroepi and rosterone sulfate , and and rostenedione in a reference group of women free of confounding factors . Women in the reference group had no usage of exogenous steroid therapy ; no history of tubal ligation , hysterectomy , or bilateral oophorectomy ; and no hyperprolactinemia or polycystic ovarian syndrome . The effects of natural and surgical menopause on sex steroid levels were also examined . RESULTS In the reference population ( n = 595 ) , total T , calculated free T , dehydroepi and rosterone sulfate , and and rostenedione declined steeply with age ( P < 0.001 ) , with the decline of each being greater in the earlier than the later decades . Examination of serum and rogen levels by year in women aged 45 - 54 yr showed no independent effect of menopausal status on and rogen levels . In women aged 55 yr or older , those who reported bilateral oophorectomy and were not on exogenous steroids had significantly lower total T and free T levels than women 55 yr or older in the reference group . CONCLUSIONS We report that serum and rogen levels decline steeply in the early reproductive years and do not vary because a consequence of natural menopause and that the postmenopausal ovary appears to be an ongoing site of testosterone production . These significant variations in and rogens with age must be taken into account when normal ranges are reported and in studies of the role of and rogens in women OBJECTIVE In some women , a decline in sexual interest accompanies a relative and rogen insufficiency after menopause . We sought to characterize the hormonal effects of the combination of oral esterified estrogens and methyltestosterone and to investigate whether this regimen improves hypoactive sexual desire . DESIGN Double-blind r and omized trial . SETTING Healthy volunteers in a multicenter research environment . PATIENT(S ) Postmenopausal women taking estrogen therapy who were experiencing hypoactive sexual desire . INTERVENTION(S ) 4 months of treatment with 0.625 mg of esterified estrogens ( n = 111 ) or the combination of 0.625 mg of esterified estrogens and 1.25 mg of methyltestosterone ( n = 107 ) . MAIN OUTCOME MEASURES Baseline and end-of- study measurements of total and bioavailable testosterone and sex hormone-binding globulin ( SHBG ) , and mean change in level of sexual interest or desire as rated on the Sexual Interest Question naire . RESULT ( S ) Treatment with the combination of esterified estrogens and methyltestosterone significantly increased the concentration of bioavailable testosterone and suppressed SHBG . Scores measuring sexual interest or desire and frequency of desire increased from baseline with combination treatment and were significantly greater than those achieved with esterified estrogens alone . Treatment with the combination was well tolerated . CONCLUSION ( S ) Increased circulating levels of unbound testosterone and suppression of SHBG provide a plausible hormonal explanation for the significantly improved sexual functioning in women receiving the combination of esterified estrogen and methyltestosterone OBJECTIVE To investigate the efficacy of esterified estrogens alone and combined with oral and rogen on sexual function and menopausal symptoms in postmenopausal women . STUDY DESIGN Twenty postmenopausal women dissatisfied with their estrogen or estrogen-progestin therapy volunteered to enter a double-blind , r and omized trial in which they received either oral esterified estrogens or esterified estrogens + and rogen for eight weeks after a single-blind , placebo , lead-in period . Sexual function was assessed with a question naire used in the Yale midlife survey , and plasma levels of estradiol , estrone , sex hormone binding globulin ( SHBG ) and beta-endorphin were measured at two- to four-week intervals . RESULTS Estrogen- and rogen therapy significantly improved sexual sensation and desire after four and eight weeks of double-blind treatment in comparison to previous estrogen therapy and postplacebo baseline assessment s. Plasma levels of estradiol and estrone increased significantly in all patients as compared to the postplacebo baseline and decreased in comparison to circulating estrogen concentrations on previous therapy . Relative proportions of free and bound steroid hormone exhibited contrasting shifts during estrogen and estrogen- and rogen therapy .  SHBG increased in the estrogen group and decreased in the estrogen- and rogen group , leading to lower amounts of free and rogens during estrogen therapy and increased free and rogen levels during estrogen- and rogen therapy . Since proportions of free ( bioavailable ) ovarian steroids would correlate inversely with plasma protein binding capacity , the beneficial effects of oral estrogen- and rogen therapy on sexual sensation and desire may be due either to the administered and rogen or to the increased availability of endogenous and exogenous and rogens , particularly in the central nervous system . CONCLUSION Sexual desire , satisfaction and frequency in postmenopausal women taking hormonal therapy were improved significantly by combined estrogen- and rogen therapy but not by estrogen or estrogen-progestin therapy .  Sexual function improved with estrogen- and rogen therapy even though circulating estrogen levels were lower than those measured during previous estrogen therapy . This leads to the conclusion that and rogens play a pivotal role in sexual function but that estrogens are not a significant factor determining levels of sexual drive and enjoyment METHODS In a r and omized , double-blind , placebo-controlled clinical trial , we evaluated the effect of a 2-year treatment with n and rolone decanoate ( ND ) on bone mineral density ( BMD ) of lumbar spine , femoral neck , and trochanter and on vertebral fracture rate , muscle mass , and hemoglobin levels .  Sixty-five osteoporotic women older than 70 years were studied . Thirty-two patients received injections of 50 mg ND , and 33 received placebos every 3 weeks . All patients received 500 mg calcium tablets daily . RESULTS Compared to baseline , ND increased the BMD of the lumbar spine ( 3.4 % + /- 6.0 and 3.7 % + /- 7.4 ; p < .05 ) and femoral neck ( 4.1 % + /- 7.3 and 4.7 % + /- 8.0 ; p < .05 ) after 1 and 2 years , respectively . The BMD of trochanter increased significantly only after the first year ( 4.8 % + /- 9.3 , p < .05 ) . Compared to the placebo group , the ND group presented with significantly increased BMD of the trochanter and neck . ND significantly reduced incidence of new vertebral fractures ( 21 % vs 43 % in the placebo group ; p < .05 ) . ND showed a significant statistical increase in lean body mass after the first ( 6.2 % + /- 5.8 ; p < .01 ) and second years ( 11.9 % + /- 
    Output:
    