药学文献检索论文范文英语

药物药理学文献：Abstract: detoxification Vitamin Tablets (approval of the text: State Yao Zhunzi Z20026566) is a composition of compound ingredients Shisan Wei, head of its function as "Qingrejiedu, replenishing liver and kidney. Heat for leukemia drug Yung-sheng, liver and kidney Card and a lack of radiotherapy and chemotherapy-induced blood cells to reduce Dengzheng "In order to better guide clinical treatment, according to the symptoms of such disease and the characteristics of the drug, focusing on 27 and retrieval of leukemia related to pharmacology literature, and all experiments And the use of oral compound related to administration, including oral mice, gavage and in vitro experiments, the compound used in medicines and Shi Sanwei the experimental leukemia treatment. The results showed that: Liuwei with killing leukemia cells, with 10 flavor increase immune function, improve the shamisen with hematopoietic system, Bawei can inhibit the growth of pathogenic microorganisms and the taste of the two anti-fatigue effect. This is the "antidote Viacom film" The clinical application provided further evidence. Key words: "detoxification Vitamin Tablets", pharmacology, leukemia, immune function, blood system, pathogenic microorganisms, anti-fatigue, Summary Leukemia is a malignant hematopoietic system diseases. Characterized by bone marrow or other blood organizations, the WBC and a series of naive cells unrestricted dysplasia (known as leukemia cells). Invasion of the body organs and blood into the liquid, caused clinical manifestations and the surrounding blood leukocyte change. In order for patients suffering from the early, according to "Quxie, centralizer, to improve efficiency, and detoxification" Pharmacodynamic study of requirements, we antidote to Viacom-prescription medicines Shi Sanwei in the composition of the 627 study of literature, summed up the specific Are as follows: • anti-tumor effect (A), the Northeast "Guanzhong": the extract on a variety of transplanted animals inhibited the tumor, research shows that the Guanzhong B is part of an effective anti-tumor. Films detect oxygen electrode, Guanzhong B P 388 significantly reduced oxygen consumption rate of leukemia cells, mitochondria may be its anti-tumor effect of a target cell [1]. Northeast Guanzhong extract of the Northeast Guanzhong suppression of DNA synthesis, Lewis lung cancer in mice and P 388 leukemia effective. The compound used in the "Mian Ma Guanzhong" to the same family belong to the substitutes, and has since been contained in the 2000 Pharmacopoeia. (2), Qingdai: its active ingredient indirubin has anti-tumor activity, is on the clinical treatment of chronic myeloid leukemia (CML) of effective drugs. Use of radionuclide tag (3 H-TdR, 3 H-uR, 3 H-leucine), respectively incorporation of the tumor DNA, RNA and protein research shows that the method, indirubin can inhibit the slow tablets and tablets of urgency Patients with leukemia cells, W 256 solid tumors in rats, mice liver and ascites EAC cancer cell synthesis of DNA metabolism, a slight suppression of RNA synthesis, protein synthesis no significant impact [3-5]. (3), Hedyotis diffusa: its crude preparation, in vitro only in high concentration under the EAC cancer, leukemia Yoshida sarcoma and a variety of cancer cells inhibited [6-8]. (4), Scutellaria barbata: Blue Screening test-tube experiments show that the tablets cell acute leukemia (AML) have mild blood cells inhibited use of respirators screening experiments show that the blood cells of AML inhibitory rate of more than 75 % [9]. (5), Wumei: The main ingredients of this compound for chronic, such as cervical cancer tumors have a certain effect, to further confirm the anti-tumor activity on its composition and role of an effective mechanism, it was the people of the original giant leukocyte (HIM eg ) And human promyelocytic leukemia cells (HL 60) for the study, conducted in vitro. Counting from living cells and cloning experiments can be seen its rate of water and alcohol extracts of the HIMeg and HL 60 cells have a direct role in inhibiting the growth [10]. (6), artesunate: The row with law and in vitro cloning research artemisinic acid and derivatives of the four artesunate B - compounds A, B, C, D on a variety of cell lines cytotoxicity. When the four kinds of compounds concentration of 5 μ g / ml, its P 388 mouse leukemia cells inhibited the rate of more than 85% [11]. Artemisinic acid (Ⅰ) of hydroxyl in the derivatives after a ene-a-lactone of a pair of six Central to the poor vary purchase of (Ⅱ, Ⅲ), Ⅱ after a reduction in a heterogeneous in Ester (Ⅳ, Ⅴ), Ⅱ further oxidation in a post-hydroxy-lactone (Ⅵ). Compounds Ⅱ, Ⅲ and Ⅵ in vitro small P 388 leukemia cells have anti-tumor activity, and Ⅰ, Ⅳ, Ⅴ no. The concentration of 10 μ g / ml and 1 μ g / ml when, Ⅱ P 388 to inhibit cell growth rate of 100% and 42%; Ⅵ inhibition rate was 100 per cent and 47 per cent [14]. • immune function of (A), Qingdai: its active ingredient indirubin 200 mg / kg sc, for 6 d, to enhance tumor-bearing rats were swallowed up by macrophages in the role of chicken red blood cells [12]. (2), Hedyotis diffusa: mice fed with aqueous extract of its crude 0, 6g (Pharmacognosy) / only to enhance the peritoneal fluid swallowed up by white Staphylococcus leukemia in the ability of [13]. Rabbit in the ability of interleukin engulfed in bacteria, fed with water decoction group than the control group increased more than three times [14, 15]. In vitro tests can enhance people in the blood of the WBC, Staphylococcus aureus phagocytosis [16]. (C), Scutellaria barbata: The goods were obtained from the polysaccharides in vitro can promote the concanavalin A (ConA) spleen cells in mice induced lymphocyte transformation, the optimal concentration of 400 r / ml [17]. (4), Astragalus: decoction of 50%, 0.5ml / only ig, can accelerate the mice injected into the blood plasma protein marker 131 I dissection of the role that their organizations giant嗜the liver and spleen cells could enhance the role of phagocytosis [18 ]; Decoction of the goods 100% 0.6 ml / only ig, can promote mice嗜phagocytic giant chicken RBC role [19]; decoction of the goods 25 g / kg ig, giant嗜will enhance the role of phagocytosis [20] ; Decoction of the goods 10 μ g / ml concentration of cell culture cancer patients, rats injected into the skin, significantly enhancing its local graft-versus-host reaction, that the goods on the T-cell immune function is to promote the role [21]. (5), Chinese wolfberry son: an ultra-dose sheep red blood cells (SRBC) immunoassay (SOI) show that the appropriate dose of old mice LBP inhibit T cells (Ts) significantly regulation, enhance the activity of Ts cells [22 ]. Through the Yc Rose and EA rosette forming the rate of confirmed LBP10mg/kg gavage to mice, for 7 d, can significantly increase the macrophage C 3b and the Fc receptor number and vitality, and can weaken into acetic acid Hydrocortisone on macrophage C 3b Fc receptor and the inhibition [23]. (6), artemisinin: its suspension 450 mg / kg ip, for 6 d, the sheep red blood cells in mice sensitized enhance the role of delayed-type hypersensitivity; 300 ~ 600mg/kg ip, Rose specific immune suppression in mice Flower forming, inhibit hemolytic plaque formation for the suspension of the 0.56, 2.8, 5.6mg/ml in vitro and promote transformation of lymphocytes, immune cells that promote the humoral immunity and are inhibited [24]. (7), the LDC Fuling; the humoral immune response without inhibition, but the option of inhibiting cell immune response. Its water extract of the antigen sensitization after the attack and after treatment were significantly curbed Picryl chloride (pc) mice contact dermatitis and sheep red blood cells (SRBC) by the reaction of the foot, when the role of administration after the attacks more Strong. In addition, the goods on the formation of antibodies in mice SRBC cells had no significant impact, but its hemolytic plaque clearly than the control group, at the same time, the level of serum hemolysin not decreased, and was an upward trend in [25]. Fuling compound soil water, alcohol extract of gavage can inhibit the rat egg white and Carrageenan foot swelling [26]. (8), Cistanche: decoction of oral prednisolone to enhance the low Yang mice humoral and cellular immune function [27]; enhanced single-core - macrophage phagocytosis [28]; their water extract of 50 mg / kg, 100mg/kg gavage to mice, can significantly increase the weight of the spleen and thymus, enhanced macrophage phagocytosis, increase hemolysin and hemolytic plaque value, increase lymphocyte transformation rate, 3 H-TdR incorporation The increase in lymphocytes, enhanced mice delayed hypersensitivity, but also increased peritoneal macrophages in the CAMP level, lower level of CGMP, CAMP / CGMP ratio increased, this may be its enhanced peritoneal macrophages Phagocytosis one of the reasons [29]. (9), Dodder: its extract 1.6 / kg ig, for 6 d, burn mice can be enhanced macrophage phagocytosis, an increase of serum antibody hemolysin spleen cells and enhance the proliferation of ConA [30]. (10), Bajitian: Wen Jinji 64 g / kg / day orally, can minors thymus atrophy, 10g/kg / day intraperitoneal injection, the thymus atrophy is also very significant, Bajitian 50 percent ethanol extract Of 60 g / kg / day of oral also make a minor thymus atrophy [31]. Its decoction, for delivery 10 days, but can inhibit the thymus atrophy and increase the number of leukocytes in the blood of the function [32]. . Microbial resistance of the role of (1), Mian Ma Guanzhong: decoction with test-tube dilution, 1: 800 to 1: 160 pairs of various types of influenza viruses have different degrees of inhibition [33]; decoction of its chicken test in 1: 104-105 Concentration of PR8 strain of influenza A virus, A virus in Asia have a strong effect [34]. (2), Qingdai: ethanol extract 0.5 g / ml concentration in vitro test for Bacillus anthracis, pneumonia bacteria, Shigella dysentery bacteria, Vibrio cholerae, Staphylococcus aureus and Staphylococcus aureus are white inhibition [35]; effective Effects of one element of wool-like Microsporum, breaking the Xuanjun, red Xuanjun, floc inhibit epidermal Xuanjun, the minimum inhibitory concentration for 5 μ g / ml [36]. (C), Hedyotis diffusa: In vitro antibacterial activity is not significant, only Staphylococcus aureus and Shigella are weak role [37]. High concentrations can inhibit the water decoction of Pseudomonas aeruginosa, Salmonella typhi and Proteus the growth of many other common pathogenic role of the weak [38]. The rabbit test appendicitis a better effect [39]. (4), Scutellaria barbata: 50% decoction with flat-ditch, Staphylococcus aureus, Shigella's blessing, typhoid bacteria, pus antibacterial Green, E. coli inhibit [40]. (5), Wumei: Screening of in vitro found that inhibit a variety of pathogens such as E. coli-dysentery, typhoid bacteria, Bacillus paratyphoid, whooping cough bacteria, such as meningococcus [41-45]. (6), Astragalus: decoction of 50% 0.4ml / only ig, for 2 d, with parainfluenza virus type Ⅰ (Sendai) BB 1株attacks continue to take 5 d, a protective role in mice, the mice can significantly reduce Mortality [46]. Decoction of 0.3 percent of their concentration. The Sindbis virus, Newcastle disease virus, follicular stomatitis virus and influenza viruses have antiviral activity [47]. (7), artemisinin: water suspension 1.8, 3.6, 5.4mg / embryo, the embryo infected with influenza virus A 3-Beijing Section 79 - two inhibit [48]. Agar plate method to test for Staphylococcus aureus, E. coli, streptococcus B, pneumococcal the LC 50 (mg / ml) of its decoction were 17.6, 131.9, 263.9,> 200: ethanol extract of their respective To 41.7, 263.9, 141.4, 93.3 ethanol extract of goods were 32.1, 93.3, 70.7, 107.1 The drug acid on Staphylococcus aureus, Staphylococcus white, enterococci, Bacillus subtilis the minimum inhibitory concentration, respectively 1.0, 1.0,> 2.0, 0.5mg/ml [49]. The flooding of soft artesunate 1: 3 concentrations in vitro on XU Lan Huang's Xuanjun, Aodu Ang's small Bacillus Xuanjun, the star's card slaves Jundeng skin fungus, have different degrees of inhibition [50 ]. (8), Bajitian: ethanol extract, in vitro to inhibit Bacillus subtilis [51]. Bajitian ethanol extract of in vitro to inhibit the hepatitis B virus [52]. . The impact of the hematopoietic system (A), Astragalus: decoction of 20 g / kg, a total of 10 d, anemia and bleeding on acetylcholine PHENYLHYDRAZINE hemolytic anemia are caused by blood can increase the red blood cells and haemoglobin, cyclophosphamide caused by the WBC and platelet reduce Promote their recovery, would increase the number of reticulocyte and the number of bone marrow cells [53]. (2), Chinese wolfberry: normal mice monthly ig10% decoction of 0.5 ml for 10 d, WBC will increase. Healthy people and cancer patients taking po wolfberry nuts 50 g / d, even serving 10 d, can significantly increase the WBC [54, 55]. LBP 10 mg / (kg.d) ip, for 3 d, can promote mouse bone marrow hematopoietic stem cell proliferation, increased significantly tablets single progenitor cells, promote their differentiation to the tablets [56]. (C), Dodder: the suppression of cyclophosphamide tablets progenitor cells (CFU-D) to promote the growth of [57]. . Anti-Fatigue Effect (A), Wumei: dry goods can eliminate fatigue, citric acid in the body the energy conversion process is indispensable to the material, physical fatigue in the blood lactate divided into CO 2 and H 2 O and from in vitro, thereby preventing lactic acid and muscle Protein binding, to avoid cell and vascular sclerosis [58]. (2), Cistanche: water decoction of the pharmacological experiments conducted in vitro studies showed that the inhibition of rat liver homogenate LPO and the formation of strong anti-fatigue and anti-anoxia role [59]. Decoction of gavage Cistanche mice, mice can extend the time for swimming, sports load serum creatine kinase reduce the rate of increase, indicating the increase in physical goods is on the basis of its role in the anti-fatigue [60]. Conclusion: After the "antidote Vitamin Tablets," Shi Sanwei prescription medicines in the analysis, summarized the following five aspects of the effect: 1. Shiwei drugs on immune function, namely: Qingdai, Hedyotis diffusa, Scutellaria barbata, astragalus, Chinese wolfberry son, artesunate, soil Fuling, Cistanche, Dodder, Bajitian. 2. Bawei Chinese medicine against pathogenic microbes inhibit, namely: Mian Ma Guanzhong, Qingdai, Hedyotis diffusa, Scutellaria barbata, Wumei, astragalus, artesunate, Bajitian. 3. Liuwei drugs to kill leukemia cells, namely: Mian Ma Guanzhong, Qingdai, Hedyotis diffusa, Scutellaria barbata, Wumei, artesunate. 4. Shamisen Chinese medicine on hematopoietic function, namely: Astragalus, Chinese wolfberry son, Cuscuta. 5. The fight against drug taste of the role of fatigue are: Wu Mei, Cistanche. According to this analysis, for detoxification vitamin tablets provide further clinical application of the reference. 我给你一个英文药理文献网，里面有你说需的！：

细胞死亡是指人体中众多细胞组织的的消亡并且会造成对组织中其他细胞的潜在伤害。 这是由于身体内的蛋白酶中的一种叫胱门蛋白酶的物质所引起的，胱门蛋白酶以类似计算机程序中的循序渐进的方式存在于体内，并且涉及到一种叫PCD的物质。细胞死亡现象是由于活跃的半胱天冬酶所引起的典型的生态变化所造成的，比如细胞的萎缩，染色体的不断缩减，直至染色体消亡。细胞组织死亡后，被其他组织所吞噬，（其他组织包括肝脏中的K细胞，以及星状肝细胞），这不会造成生理上的不良反映和炎症。（3）病理学中肝细胞的死亡会伴随一些身体炎症的出现，例如中性白细胞的浸入会加速肝脏中星状细胞的活动。（4）A Canbay,S Friedan and G J Gores,细胞的死亡会引起肝脏的损伤以及纤维症 （ 出自 肝脏病学）。。。。。下面的估计就是原文的出处了，虽然我不是学医学的，但是感觉我给你翻译的这段话你应该能看明白了，反正我是明白了。

Oral Administration 口服给药 For oral administration, the most common route, absorption refers to the transport of drugs across membranes of the epithelial cells in the GI tract. Absorption after oral administration is confounded by differences in luminal pH along the GI tract, surface area per luminal volume, blood perfusion, the presence of bile and mucus, and the nature of epithelial membranes. Acids are absorbed faster in the intestine than in the stomach, apparently contradicting the hypothesis that un-ionized drug more readily crosses membranes. However, the apparent contradiction is explained by the larger surface area and greater permeability of the membranes in the small intestine. 口服是最常用的给药途径，其吸收涉及药物通过胃肠道上皮细胞膜的转运。由于给药时相关环境条件的不同，如胃肠道管腔内pH及单位腔道容积的表面积，组织血流灌注情况，胆汁和粘液的存在以及上皮细胞膜的性质等，口服给药的吸收也有差异。酸性药物在肠中的吸收较胃中快，这显然与非解离药物更易透过细胞膜这一假设相矛盾。然而，这种明显的矛盾却可以从小肠具有很大的表面积和小肠细胞膜具有较大的通透性中得到答案。 The oral mucosa has a thin epithelium and a rich vascularity that favors absorption, but contact is usually too brief, even for drugs in solution, for appreciable absorption to occur. A drug placed between the gums and cheek （buccal administration） or under the tongue （sublingual administration） is retained longer so that absorption is more complete. 口腔粘膜上皮很薄，血管丰富，有利于药物吸收。但是，接触的时间太短暂，即使是溶液剂也来不及等到明显的吸收发生。把一种药物置于齿龈和面颊之间（颊部给药）或置于舌下（舌下给药）则可保留较长时间，使吸收更加完全。 The stomach has a relatively large epithelial surface, but because it has a thick mucous layer and the time that the drug remains there is usually relatively short, absorption is limited. Absorption of virtually all drugs is faster from the small intestine than from the stomach. Therefore, gastric emptying is the rate-limiting step. Food, especially fatty foods, slows gastric emptying （and the rate of drug absorption）, explaining why some drugs should be taken on an empty stomach when a rapid onset of action is desired. Food may enhance the extent of absorption for poorly soluble drugs （eg, griseofulvin）, reduce it for drugs degraded in the stomach （eg, penicillin G）, or have little or no effect. Drugs that affect gastric emptying （eg, parasympatholytic drugs） affect the absorption rate of other drugs. 胃具有相对大的上皮表面，但由于它有较厚的粘液层，而且药物在胃内停留的时间相对较短，吸收也较少。事实上，所有药物在小肠中的吸收速度都要比胃中快。因此，胃排空即是一限速性步骤。食物，特别是脂类食物，延缓胃排空速度（从而也延缓药物吸收速度），这也就是为何某些希望迅速奏效的药物宜空腹服用的原因。食物可增强某些溶解性差的药物（如灰黄霉素）的吸收，减少胃内降解药物（如青霉素G）的吸收，食物以裁缝折吸收或无影响，或影响甚少。影响胃排空的药物（如副交感神经阻断剂）可影响其他药物的吸收速度。 The small intestine has the largest surface area for drug absorption in the GI tract. The intraluminal pH is 4 to 5 in the duodenum but becomes progressively more alkaline, approaching 8 in the lower ileum. GI microflora may inactivate certain drugs, reducing their absorption. Decreased blood flow （eg, in shock） may lower the concentration gradient across the intestinal mucosa and decrease absorption by passive diffusion. （Decreased peripheral blood flow also alters drug distribution and metabolism.） 小肠在胃肠道中具有最大的药物吸收表面积。十二脂肠腔内pH值为4~5，管腔内pH值趋碱性逐渐增强，至回肠下部时pH接近8。胃肠道内的菌丛可使某些药物失活，降低药物的吸收。血流量的减少（如休克病人）可以降低跨肠粘膜的浓度梯度，从而减少被动扩散吸收。（外周血流减少也会改变药物的分布和代谢。 Intestinal transit time can influence drug absorption, particularly for drugs that are absorbed by active transport （eg, B vitamins）, that dissolve slowly （eg, griseofulvin）, or that are too polar （ie, poorly lipid-soluble） to cross membranes readily （eg, many antibiotics）. For such drugs, transit may be too rapid for absorption to be complete. 肠道通过时间肠道通过时间能影响药物吸收，特别是经主动转运吸收的药物（如维生素B）、溶解缓慢的药物（如灰黄霉素），或极性太高（即脂溶性差）难以透过细胞膜的药物（如许多抗生素）。这类药物通过太快，致使吸收不全。 For controlled-release dosage forms, absorption may occur primarily in the large intestine, particularly when drug release continues for > 6 h, the time for transit to the large intestine. 对控释剂型来说，吸收主要在大肠内进行，特别是药物释放时间超过6小时，也就是药物运达大肠的时间。 Absorption from solution: A drug given orally in solution is subjected to numerous GI secretions and, to be absorbed, must survive encounters with low pH and potentially degrading enzymes. Usually, even if a drug is stable in the enteral environment, little of it remains to pass into the large intestine. Drugs with low lipophilicity （ie, low membrane permeability）, such as aminoglycosides, are absorbed slowly from solution in the stomach and small intestine; for such drugs, absorption in the large intestine is expected to be even slower because the surface area is smaller. Consequently, these drugs are not candidates for controlled release. 溶液剂型的吸收药物吸收受到大量胃肠道内分泌液的影响。药物要想被吸收，就必须要在与低pH环境及潜在的降解酶的接触中生存下来。通常，即使某种药物在肠环境中很稳定，但进入大肠的仍然是极少数。低亲脂性（即膜通透性低）药物，如氨基糖苷类，经胃和小肠溶液被缓慢吸收。而在大肠中，因表面积更小，预期吸收更慢。因此，这些药物不宜制成控释剂型。 Absorption from solid forms: Most drugs are given orally as tablets or capsules primarily for convenience, economy, stability, and patient acceptance. These products must disintegrate and dissolve before absorption can occur. Disintegration greatly increases the drug's surface area in contact with GI fluids, thereby promoting drug dissolution and absorption. Disintegrants and other excipients （eg, diluents, lubricants, surfactants, binders, dispersants） are often added during manufacture to facilitate these processes. Surfactants increase the dissolution rate by increasing the wetability, solubility, and dispersibility of the drug. Disintegration of solid forms may be retarded by excessive pressure applied during the tableting procedure or by special coatings applied to protect the tablet from the digestive processes of the gut. Hydrophobic lubricants （eg, magnesium stearate） may bind to the active drug and reduce its bioavailability. 固体剂型的吸收主要是出于方便、经济、药物稳定性、及病人接受性的考虑，大多数药物都以片剂或胶囊剂口服给药。这些制剂必须经过崩解和溶解才能被吸收。崩解大大增加了药物与胃肠液的接触表面积，从而促进药物的溶解和吸收。在制药过程中,为了促进崩解和溶解作用，往往添加一些崩解剂和其他赋形剂（如稀释剂、润滑剂、表面活性剂、粘合剂、分散剂）。表面活性剂通过增加药物的吸湿性、溶解度和分散性来增加其溶解速率。在制片过程中压片压力过大，或为了使药片免受肠道消化作用的影响而使用特殊的包衣，可延缓固体剂型的崩解。忌水性润滑剂（如硬脂酸镁）可与活性药物结合而降低其生物利用度。 Dissolution rate determines the availability of the drug for absorption. When slower than absorption, dissolution becomes the rate-limiting step. Overall absorption can be controlled by manipulating the formulation. For example, reducing the particle size increases the drug's surface area, thus increasing the rate and extent of GI absorption of a drug whose absorption is normally limited by slow dissolution. Dissolution rate is affected by whether the drug is in salt, crystal, or hydrate form. The Na salts of weak acids （eg, barbiturates, salicylates） dissolve faster than their corresponding free acids regardless of the pH of the medium. Certain drugs are polymorphic, existing in amorphous or various crystalline forms. Chloramphenicol palmitate has two forms, but only one sufficiently dissolves and is absorbed to be clinically useful. A hydrate is formed when one or more water molecules combine with a drug molecule in crystal form. The solubility of such a solvate may markedly differ from the nonsolvated form; eg, anhydrous ampicillin has a greater rate of dissolution and absorption than its corresponding trihydrate. 溶解速率溶解速率决定药物吸收时的可用度。当溶解速率低于吸收速率时，溶解就会制约吸收。药物的总体吸收可通过改变配方来加以调控，例如，减小颗粒体积可增加药物的表面积，从而增加那些溶解缓慢吸收受限的药物的胃肠道吸收速率和分量。药物的不同形式，如盐、晶体或水合物等，都可影响溶解速率。不管介质的pH是多少，弱酸的钠盐（如巴比妥酸盐，水杨酸盐）比其相应的游离酸溶解得快。某些药物有多种形态，可以非晶体形或不同晶体形存在。棕榈酸氯霉素有两种存在形态，但只有一种形态能充分溶解吸收，也因而被临床使用。当一个或多个水分子和一个晶体形药物分子相结合时，就构成一种水合物。这种的溶解度可能与非水合物的溶解度有明显的不同。例如，无水氨苄西林的溶解速率和吸收比其它相应水合物的溶解吸收速率都要快得多。