Effects of recombinant human growth hormone on intestinal translocation of bacteria and endotoxin in rats with obstructive jaundice

Extrahepatic biliary obstruction promotes intestinal translocation of bacteria and endotoxin and this process is an important cause of morbidity and mortality in patients with jaundice. This study was undertaken to investigate the effect and mechanism of recombinant human growth hormone (rhGH) and to alleviate intestinal translocation of bacteria and endotoxin in murine obstructive jaundice. METHODS:A group of 42 Wistar rats were divided into 3 groups:sham operation (SO), bile duct ligation (BDL), and BDL and rhGH treatment (rhGH). By the end of the experiment,on day 7, the animals were killed, and their liver function and serum endotoxin were measured, bacterial cultures of the liver, kidney and mesenchymal lymph were made. Terminal ileum mucosa was observed under an electron microscope. RESULTS:Liver function was improved more significantly in the rhGH group than in the BDL group. The value of endotoxin in the rhGH group was 0.38±0.03 EU/ml, significantly lower than that in the BDL group (0.65±0.04 EU/ml, P【0.01), and similar to that in the SO group (0.30±0.02 EU/ml, P】0.05). The rate of bacteria translocation in the liver, kidney and mesenteric lymph was much higher in the BDL group than in other two groups. The rate of bacteria translocation in mesenteric lymph was 64.29%,significantly higher than that in the SO group and the rhGH group (P【0.05). There was no significant difference in bacteria translocation rate between the SO group and the rhGH group (P】0.05). Under an electron microscope , ileum mucosa epithelial cells in the BDL group were necrotic, and organelle were markedly metamorphic. In the rhGH group, ultrastructural changes were less evident or similar to those in the SO group. CONCLUSION:rhGH has significant protective effects on intestinal mucosa barrier in obstructive jaundice, and reduces intestinal translocation of bacteria and endotoxin.

Altered Nutrition State in the Severe Multiple Trauma Patients Undergoing Adjuvant Recombinant Human Growth Hormone Nutritional Support Therapy

In order to observe the nutrition state in the severe multiple trauma patients undergoing adjuvant recombinant human growth hormone (rhGH) nutritional support therapy, 45 patients with severe multiple traumas (ISS>25) were randomly divided into 3 groups. All the 3 groups had been supplied with nitrogen and caloricity according to the need of patients for 16 days. The rhGH therapy started 48 h after surgery and lasted for 14 days in two rhGH-treated groups in which rhGH was 0.2 and 0.4 U/(kg·d) respectively, and the resting group served as control one. The levels of nitrogen balance, prealbumin and safety variables (blood sugar, Na+, TT3 and TT4) were observed and com- pared among the three groups. The levels of nitrogen balance on the postoperative day (POD) 3 and 5 in the rhGH-treated groups were -1.28±3.19, 5.45±2.00 and -0.18±2.55, 6.11±1.60, respectively, which were significantly higher than those in the control group (-5.17±1.68 and -1.08±3.31, P<0.01). The values of prealbumin on the POD 3 and 5 in the rhGH-treated groups were 180.19±27.15, 194.44±50.82 and 194.94±29.65, 194.11±16.17, respectively, which were significantly higher than those in the control group (117.42±19.10 and 135.63±28.31, P<0.01). There was no sig- nificant difference between the rhGH 0.2 U/(kg·d) group and rhGH 0.4 U/(kg·d) group in both of the levels of nitrogen balance and prealbumin. It is concluded that the nutritional support therapy with adjuvant rhGH which starts 48 h after surgery improves the nutrition state of the patients with severe multiple trauma. It is safe for severe multiple trauma patients who accept rhGH at the dose of 0.2 and 0.4 U/(kg·d).

Effects of recombinant human growth hormone on enterocutaneous fistula patients

AIM： To explore the effects of recombinant human growth hormone （rhGH） on intestinal mucosal epithelial cell proliferation and nutritional status in patients with enterocutaneous fistula. METHODS： Eight patients with enterocutaneous fistulas received recombinant human growth hormone （10 ug/d） for 7 d. Image analysis and immunohistochemical techniques were used to analyse the expression of proliferating cell nuclear antigen （PCNA） in intestinal mucosal epithelial cells in biopsy samples from the patients who had undergone an endoscopic biopsy through the fistula at day 0, 4 and 7. Body weights, nitrogen excretion, serum levels of total proteins, albumin, prealbumin, transferrin and fibronectin were measured at day 0, 4 and 7. RESULTS： Significant improvements occurred in the expression of PCNA in the intestinal mucosal epithelial cells at day 4 and 7 compared to day 0 （24.93 ± 3.41%, 30.46 ± 5.24% vs 12.92 ± 4.20%, p 〈 0.01）. These changes were accompanied by the significant improvement of villus height （500.54 ± 53.79 um, 459.03 ± 88.98um vs 210.94 ± 49.16 um, P 〈 0.01）, serum levels of total proteins （70.52 ± 5.13 g/L, 74.89 ± 5.16 g/L vs 63.51 ± 2.47 g/L, P 〈 0.01）, albumin （39.44 ± 1.18 g/L, 42.39 ± 1.68 g/L vs 35.74 ± 1.75 g/L, P 〈 0.01） and fibronectin （236.3 4- 16.5 mg/L, 275.8± 16.9 mg/L vs 172.5 ± 21.4 mg/L, P 〈 0.01） at day 4 and 7, and prealbumin （286.38 ± 65.61 mg/L vs 180.88 ± 48.28 mg/L, P 〈 0.05）, transferrin （2.61 ± 0.12 g/L vs 2.41 ±0.14 g/L, P 〈 0.05） at day 7. Nitrogen excretion was significantly decreased at day 7 （3.40 ± 1.65 g/d vs 7.25 ± 3.92 g/d, P 〈 0.05）. No change was observed in the body weight. CONCLUSION： Recombinant human growth hormone could promote intestinal mucosal epithelial cell proliferation and protein synthesis in patients with enterocutaneous fistula.

Experimental study on effect of recombinant human growth hormone combined with chemotherapy on stomach neoplasms implanted in nude mice

Objective: To investigate the effect of different doses of recombined growth hormone (rhGH) on stomach neo- plasms implanted in nude mice, and its efficacy in combining with chemotherapy (flurouracil, 5-FU). Methods: Human stom- ach neoplasms model was established in nude mice. The nude mice were divided into control group, moderate-dose of rhGH group, low-dose rhGH group, 5-FU group, moderate-dose rhGH/5-FU group, and low-dose rhGH/5-FU group. The results of each group were observed after ten days. Results: After therapy, the body mass of rhGH groups was significantly increased compared with control group (P<0.05), the body mass of rhGH/5-FU groups was significantly increased compared with 5-FU group (P<0.05), but it was no significant difference between rhGH/5-FU groups and control group (P>0.05). The average tumor mass and volume of rhGH groups were not significantly increased compared with control group (P>0.05), but they were significantly reduced in 5-FU group and rhGH/5-FU groups (P<0.05). They were no significant difference between rhGH/5- FU groups and 5-FU group (P>0.05). After treatment, the percentages of S, G0/G1 and G2/M phases and proliferation index (PI) were not significantly changed in rhGH groups compared with control group (P>0.05), and the same with rhGH/5-FU groups compared with 5-FU group (P>0.05). The difference caused by dose of rhGH was not significant. Conclusion: rhGH enhances body mass, does not stimulate tumor growth, and has no adverse effects on tumor bearing nude mice. Combined with flurouracil, rhGH does not influence the efficacy of chemotherapy, and has no effect on tumor cell cycle kinetics.

Protective effect of perioperative recombinant human growth hormone application on intestinal mucosal barrier function in patients with intestinal obstruction and the assessment of immune inflammatory response

Objective:To study the protective effect of perioperative recombinant human growth hormone (r-hGH) application on intestinal mucosal barrier function in patients with intestinal obstruction and the influence on the immune inflammatory response.Methods:60 patients with intestinal obstruction who underwent surgical treatment in our hospital between February 2013 and July 2016 were selected as the research subjects and divided into the control group (n=34) who received conventional surgical treatment and the observation group (n=26) who received surgery combined with perioperative r-hGH treatment. The serum levels of intestinal mucosal barrier indexes, immunoglobulin and inflammatory response indicators were compared between two groups of patients before and after treatment.Results: Before treatment, differences in serum levels of intestinal mucosal barrier indexes, immunoglobulin and inflammatory response indicators were not statistically significant between the two groups of patients. After treatment, serum intestinal mucosal barrier indexes Endotoxin, D-Lactate and DAO levels in observation group were lower than those in control group, immunoglobulin IgA, IgM and IgG levels were higher than those in control group, and inflammatory response indicators IL-1, IL-6, PCT and TNF-α levels were lower than those in control group patients. Conclusion:Perioperative r-hGH application in patients with intestinal obstruction can protect the intestinal mucosal barrier, also optimize the humoral immunity and suppress the systemic inflammatory response.

Improved Cardiac Contractility of Human Recombinant Growth Hormone on the Congestive Heart Failure of Pig

The enhanced cardiac contractility effect of human recombinant growth hormone (hr-GH) on the congestive heart failure (CHF) was studied on the pig. To build a pig model of congestive heart failure, a temporary artificial cardiac pacemaker was implanted in the pig’s body and paced at 220 beats to 240 beats per minute for 1 week. After the model of congestive heart failure was successfully set up, the frequency of the pacemaker was changed to 150 beats to 180 beats per minute to maintain the CHF model stable. Pigs were divided into three groups: The hr-GH group in which 0.5 mg/kg per day of hr-GH was administrated intramuscularly for 15 days, the injection control group in which an equal amount of physiological saline was injected intramuscularly, and a normal control group. The left ventricular diastolic end pressure was (10.60±2.41) mmHg in the hr-GH group, but (19.00±3.81) mmHg in the saline control group (P<0.01); Cardiac output was (1.86±0.13) L/min in the hr-GH group, but (1.56±0.18) L/min in the saline control group (P<0.05); Peripheral vascular resistance was (56.88±7.51) mmHg·(L/min) -1 in the hr-GH group, whereas (70.30±11.59) mmHg·(L/min) -1 in the saline control group (P<0.05); +dp/dt max was (2900±316.23) and (2280±286.36) in the hr-HG group and the saline control group respectively (P<0.05). The results show that hr-GH enhances myocardial contractility of CHF, and the CHF model built by a temporary artificial cardiac pacemaker at a high rate of stimulation is reasonable and applicable.

Growth-Promoting Effect of Recombinant Human Growth Hormone and Stanozolol in Girls with Turner Syndrome

Summary: Ten girls with Turner syndrome were treated with a combination therapy of recombinant human growth hormone (R hGH) and low dose stanozolol for a period of 8 to 36 months. The results showed that when compared with the growth rate before the treatment, the growth rates after treatment with R hGH and stanozolol showed a sustained increase, reaching 9.0±1.9 cm/year during the first year of treatment; the height age increase by 2.5±0.8 years while the bone age increase were 1.0±0.7 years; and the predicted final adult height at the end of the first year of the treatment increased to 149.4±6.1 cm compared to their original mean of 142.8±4.2 cm. We are led to conclude that therapy with R hGH in combination with stanozolol can increase the growth velocity and significantly increase the predicted adult height of children with Turner syndrome.

Effects of different doses of long-acting growth hormone in treating children with growth hormone deficiency

BACKGROUND With the improvement of economy and living standards,the attention paid to short stature in children has been increasingly highlighted.Numerous causes can lead to short stature in children,among which growth hormone deficiency(GHD)is a significant factor.AIM To investigate the long-term efficacy and safety of different doses of long-acting polyethylene glycol recombinant human growth hormone(PEG-rhGH)in the treatment of GHD in children.METHODS We selected 44 pediatric patients diagnosed with GHD who were treated at Wuhu First People's Hospital from 2014 to 2018.Total 23 patients were administered a high dose of long-acting PEG-rhGH at 0.2 mg/kg subcutaneously each week,forming the high-dose group.Meanwhile,21 patients were given a lower dose of long-acting PEG-rhGH at 0.14 mg/kg subcutaneously each week,establishing the low-dose Group.The total treatment period was 2 years,during which we monitored the patients’height,annual growth velocity(GV),height standard deviation score(HtSDS),chronological age(CA),bone age(BA),and serum levels of insulin-like growth factor-1(IGF-1)and insulin-like growth factor-binding protein-3(IGFBP-3)before treatment and at 6 mo,1 year,and 2 years after treatment initiation.We also monitored thyroid function,fasting plasma glucose,fasting insulin,and other side effects.Furthermore,we calculated the homeostatic model assessment for insulin resistance.RESULTS After 1 year of treatment,the GV,HtSDS,IGF-1,BA,and IGFBP-3 in both groups significantly improved compared to the pre-treatment levels(P<0.05).Moreover,when comparing GV,HtSDS,IGF-1,BA,and IGFBP-3 between the two groups,there were no statistically significant differences either before or after the treatment(P>0.05).During the treatment intervals of 0-1.0 years and 1.0-2.0 years,both patient groups experienced a slowdown in GV and a decline in HtSDS improvement(P<0.05).CONCLUSION The use of PEG-rhGH in treating GHD patients was confirmed to be effective,with similar outcomes observed in both the high-dose group and low-dose groups,and no significant differences in the main side effects.

Changes in Serum Leptin Levels during r-hGH Treatment in Growth Hormone-Deficient Children

To observe the effect of growth hormone on serum leptin levels, serum leptin concentrations were measured by enzyme immunoassay in 12 prebutal children with growth hormone deficiency 1, 3 and 6 months before and after the treatment with recombinant human growth hormone (r hGH). For comparison, 34 normal prepubertal children were also investigated. Relationship between leptin levels and body mass index (BMI) was observed at the same time. Our results showed that serum leptin level in normal prepubertal children was 1.22±0.34 ng/ml; the pretreatment serun leptin levels in GHD children was 3.08±2.41 ng/ml, which was significantly different from those 1, 3 and 6 months after GH treatment (i.e. 1.64±1.37 ng/ml,1.57±1.40 ng/ml and 1.35±0.89 ng/ml respectively) (all P <0.001). Our results suggested that r hGH has a suppressive effect on leptin expression.

戈舍瑞林联合rhGH对中枢性性早熟患儿生长速度、子宫与卵巢容积及骨代谢的影响

目的探讨戈舍瑞林联合重组人生长激素(rhGH)对中枢性性早熟患儿生长速度、子宫与卵巢容积及骨代谢的影响。方法选取遵化市人民医院于2020年5月至2022年4月收治的84例诊断为中枢性性早熟的女童作为研究对象,采用随机数字表法分为观察组(n=42)和对照组(n=42)。对照组采用皮下注射戈舍瑞林治疗,观察组在对照组基础上加用rhGH治疗。计算两组患儿治疗前后生长速度、测定骨龄及预测成年身高;B超下观察并计算两组患儿子宫和卵巢容积;采用电化学发光免疫分析法检测Ⅰ型原胶原氨基N端前肽(PINP)、Ⅰ型胶原羧基端肽交联(β-CTX)、骨钙素N端中分子片段(N-MID)水平;采用放射免疫法检测卵泡刺激素(FSH)、雌二醇(E_(2))和黄体生成素(LH)水平。结果治疗前两组患儿身高、预测成年身高、生长速度、骨龄、子宫和卵巢容积、PINP、β-CTX、N-MID、E_(2)、FSH和LH水平比较,差异无统计学意义(P>0.05)。治疗后两组患儿身高、预测成年身高及生长速度较治疗前增加,且观察组治疗后身高、预测成年身高、生长速度高于对照组(t=2.812、2.159、2.049,P<0.05);治疗后两组患儿子宫和卵巢容积较治疗前缩小,且观察组小于对照组(t=5.014、3.492,P<0.05);治疗后两组患儿PINP、N-MID、E_(2)、FSH和LH水平较治疗前下降,且观察组低于对照组(t=3.503、2.230、3.694、3.158、2.458,P<0.05)。观察组和对照组不良反应发生率比较,差异无统计学意义(P>0.05)。结论戈舍瑞林联合rhGH能够减缓中枢性性早熟患儿第二性征发育,调节骨代谢和性激素水平。

自制生长贴联合rhGH治疗儿童特发性矮身材的临床疗效观察

目的探讨自制生长贴联合重组人生长激素(rhGH)对儿童特发性矮身材(ISS)的临床疗效。方法选取2022年1月至12月在襄阳市中医医院就诊的90例ISS患儿,随机分为对照组1、对照组2和实验组,每组30例。对照组1予以rhGH治疗,对照组2予以自制生长贴治疗,实验组予以生长贴联合rhGH治疗,疗程均为12个月,比较三组治疗前、后身高和骨龄的变化情况。结果与治疗前相比,三组治疗后的身高值和骨龄均有明显增长(P<0.05);组间比较,三组的治疗效果相当(P>0.05)。治疗后实验组的生长速率明显快于两组对照组(P<0.05)。结论自制生长贴联合rhGH治疗儿童ISS能显著增高患儿身高,值得临床推广应用。

Optimizing growth in pediatric renal transplant recipients: An update

Growth retardation is a significant complication observed in pediatric renal transplant recipients,originating from a multifactorial etiology.Factors contributing to growth impairment encompass pre-transplant conditions such as primary kidney disease,malnutrition,quality of care,growth deficits at the time of transplantation,dialysis adequacy,and the use of recombinant human growth hormone.Additionally,elements related to the renal transplant itself,such as living donors,corticosteroid usage,and graft functioning,further compound the challenge.Although renal transplantation is the preferred renal replacement therapy,its impact on achieving final height and normal growth in children remains uncertain.The consequences of growth delay extend beyond the physi-ological realm,negatively influencing the quality of life and social conditions of pediatric renal transplant recipients,and ultimately affecting their educational and employment outcomes.Despite advancements in graft survival rates,growth retardation remains a formidable clinical concern among children undergoing renal transplantation.Major risk factors for delayed final adult height include young age at transplantation,pre-existing short stature,and the use of specific immunosuppressive drugs,particularly steroids.Effective management of growth retardation necessitates early intervention,commencing even before transplantation.Strategies involving the administration of recombinant growth hormone both pre-and post-transplant,along with protocols aimed at minimizing steroid usage,are important for achieving catch-up growth.This review provides a comprehensive outline of the multifaceted nature of growth retardation in pediatric renal transplant recipients,emphasizing the importance of early and targeted interventions to mitigate its impact on the long-term well-being of these children from birth to adolescence.INTRODUCTION Children with chronic kidney disease(CKD)endure frequent hospitalizations and ongoing treatment,which significantly affect their quality of life.One of the most noticeable effects of CKD in children is poor growth,with stunted height being a common sign of chronic malnutrition.Growth assessment involves regularly measuring weight and height/length and comparing these against z-score charts,along with other anthropometric indicators like head circumference and mid-upper arm circumference.Data from the North American Pediatric Renal Trials and Collaborative Studies(NAPRTCS)registry shows that over 35%of children enrolled had stunted growth at the time of admission,with growth impairment being more severe in younger children(58%in those aged under 1 year,compared to 22%in those aged over 12 years).Additionally,the same data revealed that growth impairment worsens as the severity of the disease increases.Although recent advances in science have enabled better outcomes for children with CKD,in resource-limited settings,numerous children are still deprived of achieving optimal growth owing to the disease and its related factors.Stunting is a key indicator of chronic growth impairment in children.A study by Wong et al[1]in the United States Renal Data System found that each SD decrease in height among children with stage V CKD is linked to a 14%increase in the risk of death[1].Similarly,research by Furth et al[2]using data from the NAPRTCS indicated that children with a height standard deviation score(SDS)of-2.5 face a relative hazard of death of 2.07.Stunting also correlates with increased hospitalizations.A study in the United States followed 1112 pediatric patients with end-stage renal disease from 1990 to 1995.It showed that children with severe or moderate growth failure had higher hospitalization rates compared to those with normal growth.Specifically,the relative risk for hospitalization was 1.14(95%CI:1.1-1.2)for those with moderate growth failure and 1.24(95%CI:1.2-1.3)for those with severe growth failure,even after adjusting for age,sex,race,cause,and duration of end-stage renal disease,and treatment type[2](dialysis or transplant).The growth of a child significantly affects his/her psychological and overall well-being as an adult.Short children are often embarrassed by peers,and it has been observed that height influences employment status,with unemployment being more prevalent among stunted individuals.Further,marital opportunities can be fewer among stunted individuals[3].Hence,all measures to achieve adequate growth should be attempted in children with CKD,regardless of whether they undergo transplantation.

维生素D钙咀嚼片联合rhGH治疗儿童生长激素缺乏症的临床效果

目的:探析维生素D钙咀嚼片联合重组人生长激素(rhGH)治疗儿童生长激素缺乏症(GHD)的临床效果。方法:采用目的抽样法纳入2022年1月—2023年12月石狮市医院收治的72例GHD患儿作为研究对象。采用随机数表法将纳入患者分为对照组和观察组,各36例。对照组给予rhGH治疗,观察组给予维生素D钙咀嚼片联合rhGH治疗,比较两组维生素D相关指标{25羟维生素D_(3)[25-(OH)D_(3)]、1,25-二羟维生素D_(3)[1,25-(OH)_(2)D_(3)]}、体格相关指标[身高标准差分值(HtSDS)、身高增长速度、骨龄]、骨代谢指标[碱性磷酸酶(BAP)、Ⅰ型骨胶原C终端端肽(ⅠCTP)、骨钙素]、甲状腺功能[游离三碘甲状腺原氨酸(FT_(3))、游离四碘甲状腺原氨酸(FT_(4))、促甲状腺激素(TSH)]、生长因子[胰岛素样生长因子-1(IGF-1)、胰岛素样生长因子结合蛋白-3(IGFBP-3)]、临床效果。结果:治疗前,两组维生素D相关指标、体格相关指标、骨代谢指标、甲状腺功能及生长因子水平比较,差异无统计学意义(P>0.05);治疗后,两组25-(OH)D_(3)、1,25-(OH)_(2)D_(3)、BAP、ⅠCTP、骨钙素、FT_(3)、FT_(4)、IGF-1、IGFBP-3水平、HtSDS、身高增长速度、骨龄高于治疗前,TSH水平低于治疗前,且观察组优于对照组,差异有统计学意义(P<0.05)。观察组临床总有效率为94.44%,高于对照组的77.78%,差异有统计学意义(P<0.05)。结论:维生素D钙咀嚼片联合rhGH治疗儿童GHD临床效果确切,与单用rhGH相比,可以更好改善患儿维生素D相关指标、体格相关指标、骨代谢指标、甲状腺功能及生长因子,同时也能有效提升治疗效果。

国产rhGH的免疫原性及其对临床疗效的影响

目的 通过测定生长激素缺乏症 (GHD)患儿用国产重组人生长激素 (recom bined hum angrowth horm one,rh GH)治疗时血清生长激素抗体 (GH- Ab)水平及其结合特性 ,探讨 rh GH的免疫原性及其对疗效的影响。方法 对 6 1例 (男 49例 ,女 12例 ) GHD患儿用国产 rh GH治疗 ,每晚睡前皮下注射 rh GH 0 .1IU /kg共6个月 ;用放射免疫法测定治疗期间患儿血清 GH- Ab水平和滴度 ,并计算抗体结合容量、亲和常数 (Ka)。结果 48%患儿 (2 9/6 1)用药后 3个月血清 GH - Ab呈阳性至试验结束时仍未消失 ,其中 2 0例抗体为弱阳性 (结合率 <10 % ) ,9例呈强阳性 (结合率 >15 % ) ;5 2 %患儿 (32 /6 1)治疗期间抗体为阴性 ;血清 GH- Ab的结合容量、Ka及滴度均为低水平 ,分别为 (0 .1～ 4.8) pmol/L、(1.7× 10 7～ 6 .5× 10 8) L /mol和 1∶ 4～ 1∶ 8。GH- Ab阳性患儿治疗后的身高、身高增长速率及身高落后于正常 SD值的变化与同期阴性者比较无统计学差异 (P>0 .0 5 )。结论 本试验所用国产 rh GH对 GHD患儿身高增长具有确切的促进作用 ,其免疫原性所导致产生的 GH -

rhGH对肠道缺血再灌注损伤大鼠促炎介质介导性肺损伤的影响

目的:观察重组人生长激素(rhGH)对肠道缺血再灌注(GIR)损伤大鼠促炎介质介导性肺损伤的影响。方法:42只Wister大鼠随机分为GIR损伤组和治疗组,每组分为缺血前30min,再灌注后48h和72h3个时相点(n=6)。治疗组分别于再灌注后3h和12h使用rhGH向大鼠腹壁皮下注射1U/kg,每间隔12h追加一次。采用夹闭肠系膜前动脉(60min)技术复制GIR损伤大鼠模型。观察各时相点:(1)血浆内毒素(LPS)和肿瘤坏死因子(TNF-α)水平的变化;(2)肺组织中髓过氧化酶(MPO)、弹性蛋白酶(NE)、磷脂酶A2(PLA2)活性的变化;(3)肺组织湿干重比值(W/D)的变化。结果:成功复制了大鼠GIR损伤模型,rhGH用药后可引起:(1)血浆LPS和TNF-α水平与GIR组比较明显降低(P<0.01或P<0.05);(2)再灌注3h和12h用药组肺组织PLA2含量与GIR组比较在再灌注后48h显著下降(P<0.05,P<0.01),其余时象点MPO、PLA2、NE活性与GIR组比较有不同程度变化,但均无统计学意义;(3)再灌注后3h用药组肺组织的W/D与GIR组比较有显著差异(P<0.05)。结论:rhGH能减轻促炎介质介导性肺损伤,可能与降低GIR损伤大鼠血液中LPS和TNF-α的水平和肺组织中PLA2活性有关。

rhGH联合双刺激治疗对卵巢功能低下患者血清激素及免疫学指标的影响分析

目的分析探讨rh GH联合双刺激治疗对卵巢功能低下患者血清激素及免疫学指标影响分析。方法收集卵巢功能低下患者176例,随机分为研究组与对照组,每组88例。研究组患者采用重组人生长激素(rh GH)辅助双刺激治疗,对照组则单纯采用双刺激治疗。观察对比2组患者的疗效、并发症情况,比较雌二醇(E2)、促卵泡激素(FSH)、黄体生成激素(LH)等血清激素水平的变化,以及血清中抗卵巢抗体(AOAb)、抗心磷脂抗体(ACA)、甲状腺球蛋白抗体(TG-Ab)、抗子宫内膜抗体(Em Ab)、抗精予抗体(ASA)等免疫学指标水平变化情况。结果研究组rh GH联合双刺激治疗卵巢功能低下者总有效率(90.14%)显著高于对照组(68.18%),差异有统计学意义(P<0.05);治疗后,研究组患者的FSH、LH、E2等血清激素水平,均较治疗前有显著改善(P<0.05),而研究组患者的改善更明显(P<0.05);治疗后,2组患者免疫学指标AOAb、ACA、TG-Ab、Em Ab和ASA的阳性率均有所降低(P<0.05),但研究组患者的降低更为显著(P<0.05);研究组患者发生不良反应率(5.68%)显著低于对照组(12.50%),差异有统计学意义(P<0.05)。结论 rh GH辅助双刺激治疗疗效显著,可有效减少并发症的发生,改善血清激素水平及相关免疫学指标水平,具有良好的临床应用价值,值得进一步推广应用。

rhGH在大肠杆菌周质中的分泌表达

在大肠杆菌周质中分泌表达rhGH既有利于消除其在临床应用上的抗原性又有利于提取纯化,在rhGH的发酵生产中越来越受到青睐。就rhGH在大肠杆菌中的分泌表达机制以及启动子、引导序列、宿主菌、培养基和培养条件对分泌表达效率的影响等方面进行了综述。

rhGH联合左卡尼汀治疗透析患者营养不良疗效

目的:探讨小剂量重组人生长激素(rhGH)联合左卡尼汀治疗透析营养不良的疗效。方法:选择住院透析营养不良患者91例,分小剂量组47例,透析后rhGH 3U/次,3次/1周,皮下注射,左卡尼汀,1g/次,静脉注射, 3次/1周;常规剂量组28例,rhGH 5U/次,其他同小剂量组;对照组16例不用rhGH和左卡尼汀;疗程3个月。观察3组治疗前后血浆总蛋白、白蛋白、血清转铁蛋白及前白蛋白浓度变化。结果:小剂量和常规剂量组治疗前后各项指标均有显著差异(p<0.05),两组与对照组治疗后比较,各项指标也均有显著差异(P<0.05),而小剂量与常规剂量组治疗后比较差异无统计学意义(P>0.05)。结论:左卡尼汀联合小剂量rhGH可有效改善透析并发营养不良患者的营养状况,且可节约医疗资源,减轻患者负担。

rhGH在大鼠肝脏缺血再灌注损伤中保护和修复的作用

目的探讨重组人生长激素(rhGH)在肝脏缺血再灌注损伤中的保护和修复作用及其机理。方法Pringles法建立180只肝脏缺血再灌注损伤模型,随机分为:A、B、C、D四组。A组:rhGH预处理组(n=50),B组:作为A组的对照组(n=50);A组:建模前连续7 d给予重组人生长激素(rhGH)针剂皮下注射0.2IU/100 g(体重)/d,B组分别给予等量的生理盐水。观察ALT、TNF-α、IL-1浕、丙二醛(MDA)肝脏能荷(Energy charge,EC)的变化,电镜观察肝脏超微结构变化。C组:rhGH治疗组(n=40),D组:作为C组的对照组(n=40)实验组建立模型后7d每天给予rhGH针剂皮下注射(0.2 IU/100 g),对照组分别给予等量的生理盐水;检测ALT、TNF-α、IL-1浕、EC、电镜观察肝脏超微结构的变化。结果A、B两组:A组ALT、TNF-a、、IL-1浕、和MDA在各个时间点的水平明显低于B组(P<0.05)。A组EC水平明显高于B组(P<0.05);B组电镜下可见肝窦内皮细胞破坏,肝细胞线粒体结构改变,A组肝细胞超微结构明显改善。C、D两组:ALT、TNF-α、明显降低,在7 d(和)或14d C组与D组有显著性差异;C组EC 7 d、14 d明显高于D组(P<0.05);C组肝细胞超微结构较D组亦有明显改善。结论rhGH可能通过抑制了细胞因子(TNF-α、IL-1浕),进一步减少MDA的生成,从而减轻了这些因子对肝脏损伤,rhGH对肝脏缺血再灌注损伤具有保护和修复作用;可以在肝脏缺血再灌注损伤后促进线粒体功能恢复,改善肝细胞能量代谢状态;rhGH在肝脏缺血再灌注损伤过程中,具有促进肝脏再生的作用。

AI联合rhGH对男性特发性矮小症患儿生长速率、骨密度及骨代谢的影响

目的分析芳香化酶抑制剂(AI)联合重组人生长激素(rhGH)对男性特发性矮小症患儿生长速率、骨密度及骨代谢的影响。方法选取2015年1月至2017年11月上海交通大学医学院附属第九人民医院儿科收治的48例男性特发性矮小症患儿为研究对象,按照随机数字表法分为对照组和研究组,每组24例。对照组采用rhGH治疗,研究组采用AI联合rhGH治疗,比较两组治疗前后身高、体质指数、生长速率、骨龄、骨密度及骨代谢指标[骨钙素(OC)、胰岛素样生长因子1(IGF-1)、骨碱性磷酸酶(BALP)、血清β-胶原降解产物(β-CTX)及Ⅰ型前胶原N端前肽(PINP)]水平。结果不考虑测量时间,两组间身高、生长速率、骨龄的主效应差异有统计学意义(P<0.05);身高、生长速率、骨龄的时点间与组间存在交互作用(P<0.05),而体质指数、骨密度的时点间与组间不存在交互作用(P>0.05),两组治疗前后身高、生长速率、骨龄的变化幅度不同,观察组变化更明显。不考虑测量时间,两组间OC、IGF-1、BALP、β-CTX、PINP的主效应差异无统计学意义(P>0.05),OC、IGF-1、BALP、β-CTX、PINP的时点间与组间不存在交互作用(P>0.05)。结论与单纯rhGH相比,AI联合rhGH更有利于男性特发性矮小症患儿的身高增长,并可明显改善骨龄提前,且未明显影响患儿骨代谢、骨密度。